| //======================================================================== |
| // |
| // GfxState.cc |
| // |
| // Copyright 1996-2003 Glyph & Cog, LLC |
| // |
| //======================================================================== |
| |
| //======================================================================== |
| // |
| // Modified under the Poppler project - http://poppler.freedesktop.org |
| // |
| // All changes made under the Poppler project to this file are licensed |
| // under GPL version 2 or later |
| // |
| // Copyright (C) 2005 Kristian Høgsberg <krh@redhat.com> |
| // Copyright (C) 2006, 2007 Jeff Muizelaar <jeff@infidigm.net> |
| // Copyright (C) 2006 Carlos Garcia Campos <carlosgc@gnome.org> |
| // Copyright (C) 2006-2010 Albert Astals Cid <aacid@kde.org> |
| // Copyright (C) 2009 Koji Otani <sho@bbr.jp> |
| // Copyright (C) 2009 Thomas Freitag <Thomas.Freitag@alfa.de> |
| // Copyright (C) 2009 Christian Persch <chpe@gnome.org> |
| // |
| // To see a description of the changes please see the Changelog file that |
| // came with your tarball or type make ChangeLog if you are building from git |
| // |
| //======================================================================== |
| |
| #include <config.h> |
| |
| #ifdef USE_GCC_PRAGMAS |
| #pragma implementation |
| #endif |
| |
| #include <stddef.h> |
| #include <math.h> |
| #include <string.h> |
| #include "goo/gmem.h" |
| #include "Error.h" |
| #include "Object.h" |
| #include "Array.h" |
| #include "Page.h" |
| #include "Gfx.h" |
| #include "GfxState.h" |
| #include "GfxState_helpers.h" |
| #include "GfxFont.h" |
| #include "GlobalParams.h" |
| #include "PopplerCache.h" |
| |
| //------------------------------------------------------------------------ |
| |
| GBool Matrix::invertTo(Matrix *other) |
| { |
| double det; |
| |
| det = 1 / (m[0] * m[3] - m[1] * m[2]); |
| other->m[0] = m[3] * det; |
| other->m[1] = -m[1] * det; |
| other->m[2] = -m[2] * det; |
| other->m[3] = m[0] * det; |
| other->m[4] = (m[2] * m[5] - m[3] * m[4]) * det; |
| other->m[5] = (m[1] * m[4] - m[0] * m[5]) * det; |
| |
| return gTrue; |
| } |
| |
| void Matrix::transform(double x, double y, double *tx, double *ty) |
| { |
| double temp_x, temp_y; |
| |
| temp_x = m[0] * x + m[2] * y + m[4]; |
| temp_y = m[1] * x + m[3] * y + m[5]; |
| |
| *tx = temp_x; |
| *ty = temp_y; |
| } |
| |
| //------------------------------------------------------------------------ |
| |
| struct GfxBlendModeInfo { |
| char *name; |
| GfxBlendMode mode; |
| }; |
| |
| static const GfxBlendModeInfo gfxBlendModeNames[] = { |
| { "Normal", gfxBlendNormal }, |
| { "Compatible", gfxBlendNormal }, |
| { "Multiply", gfxBlendMultiply }, |
| { "Screen", gfxBlendScreen }, |
| { "Overlay", gfxBlendOverlay }, |
| { "Darken", gfxBlendDarken }, |
| { "Lighten", gfxBlendLighten }, |
| { "ColorDodge", gfxBlendColorDodge }, |
| { "ColorBurn", gfxBlendColorBurn }, |
| { "HardLight", gfxBlendHardLight }, |
| { "SoftLight", gfxBlendSoftLight }, |
| { "Difference", gfxBlendDifference }, |
| { "Exclusion", gfxBlendExclusion }, |
| { "Hue", gfxBlendHue }, |
| { "Saturation", gfxBlendSaturation }, |
| { "Color", gfxBlendColor }, |
| { "Luminosity", gfxBlendLuminosity } |
| }; |
| |
| #define nGfxBlendModeNames \ |
| ((int)((sizeof(gfxBlendModeNames) / sizeof(GfxBlendModeInfo)))) |
| |
| //------------------------------------------------------------------------ |
| // |
| // NB: This must match the GfxColorSpaceMode enum defined in |
| // GfxState.h |
| static char *gfxColorSpaceModeNames[] = { |
| "DeviceGray", |
| "CalGray", |
| "DeviceRGB", |
| "CalRGB", |
| "DeviceCMYK", |
| "Lab", |
| "ICCBased", |
| "Indexed", |
| "Separation", |
| "DeviceN", |
| "Pattern" |
| }; |
| |
| #define nGfxColorSpaceModes ((sizeof(gfxColorSpaceModeNames) / sizeof(char *))) |
| |
| #ifdef USE_CMS |
| |
| #include <lcms.h> |
| |
| #define COLOR_PROFILE_DIR "/ColorProfiles/" |
| #define GLOBAL_COLOR_PROFILE_DIR POPPLER_DATADIR COLOR_PROFILE_DIR |
| |
| void GfxColorTransform::doTransform(void *in, void *out, unsigned int size) { |
| cmsDoTransform(transform, in, out, size); |
| } |
| |
| // transformA should be a cmsHTRANSFORM |
| GfxColorTransform::GfxColorTransform(void *transformA) { |
| transform = transformA; |
| refCount = 1; |
| } |
| |
| GfxColorTransform::~GfxColorTransform() { |
| cmsDeleteTransform(transform); |
| } |
| |
| void GfxColorTransform::ref() { |
| refCount++; |
| } |
| |
| unsigned int GfxColorTransform::unref() { |
| return --refCount; |
| } |
| |
| static cmsHPROFILE RGBProfile = NULL; |
| static GooString *displayProfileName = NULL; // display profile file Name |
| static cmsHPROFILE displayProfile = NULL; // display profile |
| static unsigned int displayPixelType = 0; |
| static GfxColorTransform *XYZ2DisplayTransform = NULL; |
| |
| // convert color space signature to cmsColor type |
| static unsigned int getCMSColorSpaceType(icColorSpaceSignature cs); |
| static unsigned int getCMSNChannels(icColorSpaceSignature cs); |
| static cmsHPROFILE loadColorProfile(const char *fileName); |
| |
| void GfxColorSpace::setDisplayProfile(void *displayProfileA) { |
| displayProfile = displayProfileA; |
| } |
| |
| void GfxColorSpace::setDisplayProfileName(GooString *name) { |
| displayProfileName = name->copy(); |
| } |
| |
| cmsHPROFILE GfxColorSpace::getRGBProfile() { |
| return RGBProfile; |
| } |
| |
| cmsHPROFILE GfxColorSpace::getDisplayProfile() { |
| return displayProfile; |
| } |
| |
| #endif |
| |
| //------------------------------------------------------------------------ |
| // GfxColorSpace |
| //------------------------------------------------------------------------ |
| |
| GfxColorSpace::GfxColorSpace() { |
| } |
| |
| GfxColorSpace::~GfxColorSpace() { |
| } |
| |
| GfxColorSpace *GfxColorSpace::parse(Object *csObj, Gfx *gfx) { |
| GfxColorSpace *cs; |
| Object obj1; |
| |
| cs = NULL; |
| if (csObj->isName()) { |
| if (csObj->isName("DeviceGray") || csObj->isName("G")) { |
| cs = new GfxDeviceGrayColorSpace(); |
| } else if (csObj->isName("DeviceRGB") || csObj->isName("RGB")) { |
| cs = new GfxDeviceRGBColorSpace(); |
| } else if (csObj->isName("DeviceCMYK") || csObj->isName("CMYK")) { |
| cs = new GfxDeviceCMYKColorSpace(); |
| } else if (csObj->isName("Pattern")) { |
| cs = new GfxPatternColorSpace(NULL); |
| } else { |
| error(-1, "Bad color space '%s'", csObj->getName()); |
| } |
| } else if (csObj->isArray()) { |
| csObj->arrayGet(0, &obj1); |
| if (obj1.isName("DeviceGray") || obj1.isName("G")) { |
| cs = new GfxDeviceGrayColorSpace(); |
| } else if (obj1.isName("DeviceRGB") || obj1.isName("RGB")) { |
| cs = new GfxDeviceRGBColorSpace(); |
| } else if (obj1.isName("DeviceCMYK") || obj1.isName("CMYK")) { |
| cs = new GfxDeviceCMYKColorSpace(); |
| } else if (obj1.isName("CalGray")) { |
| cs = GfxCalGrayColorSpace::parse(csObj->getArray()); |
| } else if (obj1.isName("CalRGB")) { |
| cs = GfxCalRGBColorSpace::parse(csObj->getArray()); |
| } else if (obj1.isName("Lab")) { |
| cs = GfxLabColorSpace::parse(csObj->getArray()); |
| } else if (obj1.isName("ICCBased")) { |
| cs = GfxICCBasedColorSpace::parse(csObj->getArray(), gfx); |
| } else if (obj1.isName("Indexed") || obj1.isName("I")) { |
| cs = GfxIndexedColorSpace::parse(csObj->getArray(), gfx); |
| } else if (obj1.isName("Separation")) { |
| cs = GfxSeparationColorSpace::parse(csObj->getArray(), gfx); |
| } else if (obj1.isName("DeviceN")) { |
| cs = GfxDeviceNColorSpace::parse(csObj->getArray(), gfx); |
| } else if (obj1.isName("Pattern")) { |
| cs = GfxPatternColorSpace::parse(csObj->getArray(), gfx); |
| } else { |
| error(-1, "Bad color space"); |
| } |
| obj1.free(); |
| } else { |
| error(-1, "Bad color space - expected name or array"); |
| } |
| return cs; |
| } |
| |
| void GfxColorSpace::getDefaultRanges(double *decodeLow, double *decodeRange, |
| int maxImgPixel) { |
| int i; |
| |
| for (i = 0; i < getNComps(); ++i) { |
| decodeLow[i] = 0; |
| decodeRange[i] = 1; |
| } |
| } |
| |
| int GfxColorSpace::getNumColorSpaceModes() { |
| return nGfxColorSpaceModes; |
| } |
| |
| char *GfxColorSpace::getColorSpaceModeName(int idx) { |
| return gfxColorSpaceModeNames[idx]; |
| } |
| |
| #ifdef USE_CMS |
| cmsHPROFILE loadColorProfile(const char *fileName) |
| { |
| cmsHPROFILE hp = NULL; |
| FILE *fp; |
| |
| if (fileName[0] == '/') { |
| // full path |
| // check if open the file |
| if ((fp = fopen(fileName,"r")) != NULL) { |
| fclose(fp); |
| hp = cmsOpenProfileFromFile(fileName,"r"); |
| } |
| return hp; |
| } |
| // try to load from user directory |
| GooString *path = globalParams->getBaseDir(); |
| path->append(COLOR_PROFILE_DIR); |
| path->append(fileName); |
| // check if open the file |
| if ((fp = fopen(path->getCString(),"r")) != NULL) { |
| fclose(fp); |
| hp = cmsOpenProfileFromFile(path->getCString(),"r"); |
| } |
| delete path; |
| if (hp == NULL) { |
| // load from global directory |
| path = new GooString(GLOBAL_COLOR_PROFILE_DIR); |
| path->append(fileName); |
| // check if open the file |
| if ((fp = fopen(path->getCString(),"r")) != NULL) { |
| fclose(fp); |
| hp = cmsOpenProfileFromFile(path->getCString(),"r"); |
| } |
| delete path; |
| } |
| return hp; |
| } |
| |
| static int CMSError(int ecode, const char *msg) |
| { |
| error(-1, "%s", msg); |
| return 1; |
| } |
| |
| int GfxColorSpace::setupColorProfiles() |
| { |
| static GBool initialized = gFalse; |
| cmsHTRANSFORM transform; |
| unsigned int nChannels; |
| |
| // do only once |
| if (initialized) return 0; |
| initialized = gTrue; |
| |
| // set error handlor |
| cmsSetErrorHandler(CMSError); |
| |
| if (displayProfile == NULL) { |
| // load display profile if it was not already loaded. |
| if (displayProfileName == NULL) { |
| displayProfile = loadColorProfile("display.icc"); |
| } else if (displayProfileName->getLength() > 0) { |
| displayProfile = loadColorProfile(displayProfileName->getCString()); |
| } |
| } |
| // load RGB profile |
| RGBProfile = loadColorProfile("RGB.icc"); |
| if (RGBProfile == NULL) { |
| /* use built in sRGB profile */ |
| RGBProfile = cmsCreate_sRGBProfile(); |
| } |
| // create transforms |
| if (displayProfile != NULL) { |
| displayPixelType = getCMSColorSpaceType(cmsGetColorSpace(displayProfile)); |
| nChannels = getCMSNChannels(cmsGetColorSpace(displayProfile)); |
| // create transform from XYZ |
| cmsHPROFILE XYZProfile = cmsCreateXYZProfile(); |
| if ((transform = cmsCreateTransform(XYZProfile, TYPE_XYZ_DBL, |
| displayProfile, |
| COLORSPACE_SH(displayPixelType) | |
| CHANNELS_SH(nChannels) | BYTES_SH(1), |
| INTENT_RELATIVE_COLORIMETRIC,0)) == 0) { |
| error(-1, "Can't create Lab transform"); |
| } else { |
| XYZ2DisplayTransform = new GfxColorTransform(transform); |
| } |
| cmsCloseProfile(XYZProfile); |
| } |
| return 0; |
| } |
| |
| unsigned int getCMSColorSpaceType(icColorSpaceSignature cs) |
| { |
| switch (cs) { |
| case icSigXYZData: |
| return PT_XYZ; |
| break; |
| case icSigLabData: |
| return PT_Lab; |
| break; |
| case icSigLuvData: |
| return PT_YUV; |
| break; |
| case icSigYCbCrData: |
| return PT_YCbCr; |
| break; |
| case icSigYxyData: |
| return PT_Yxy; |
| break; |
| case icSigRgbData: |
| return PT_RGB; |
| break; |
| case icSigGrayData: |
| return PT_GRAY; |
| break; |
| case icSigHsvData: |
| return PT_HSV; |
| break; |
| case icSigHlsData: |
| return PT_HLS; |
| break; |
| case icSigCmykData: |
| return PT_CMYK; |
| break; |
| case icSigCmyData: |
| return PT_CMY; |
| break; |
| case icSig2colorData: |
| case icSig3colorData: |
| case icSig4colorData: |
| case icSig5colorData: |
| case icSig6colorData: |
| case icSig7colorData: |
| case icSig8colorData: |
| case icSig9colorData: |
| case icSig10colorData: |
| case icSig11colorData: |
| case icSig12colorData: |
| case icSig13colorData: |
| case icSig14colorData: |
| case icSig15colorData: |
| default: |
| break; |
| } |
| return PT_RGB; |
| } |
| |
| unsigned int getCMSNChannels(icColorSpaceSignature cs) |
| { |
| switch (cs) { |
| case icSigXYZData: |
| case icSigLuvData: |
| case icSigLabData: |
| case icSigYCbCrData: |
| case icSigYxyData: |
| case icSigRgbData: |
| case icSigHsvData: |
| case icSigHlsData: |
| case icSigCmyData: |
| case icSig3colorData: |
| return 3; |
| break; |
| case icSigGrayData: |
| return 1; |
| break; |
| case icSigCmykData: |
| case icSig4colorData: |
| return 4; |
| break; |
| case icSig2colorData: |
| return 2; |
| break; |
| case icSig5colorData: |
| return 5; |
| break; |
| case icSig6colorData: |
| return 6; |
| break; |
| case icSig7colorData: |
| return 7; |
| break; |
| case icSig8colorData: |
| return 8; |
| break; |
| case icSig9colorData: |
| return 9; |
| break; |
| case icSig10colorData: |
| return 10; |
| break; |
| case icSig11colorData: |
| return 11; |
| break; |
| case icSig12colorData: |
| return 12; |
| break; |
| case icSig13colorData: |
| return 13; |
| break; |
| case icSig14colorData: |
| return 14; |
| break; |
| case icSig15colorData: |
| return 15; |
| default: |
| break; |
| } |
| return 3; |
| } |
| |
| #endif |
| |
| //------------------------------------------------------------------------ |
| // GfxDeviceGrayColorSpace |
| //------------------------------------------------------------------------ |
| |
| GfxDeviceGrayColorSpace::GfxDeviceGrayColorSpace() { |
| } |
| |
| GfxDeviceGrayColorSpace::~GfxDeviceGrayColorSpace() { |
| } |
| |
| GfxColorSpace *GfxDeviceGrayColorSpace::copy() { |
| return new GfxDeviceGrayColorSpace(); |
| } |
| |
| void GfxDeviceGrayColorSpace::getGray(GfxColor *color, GfxGray *gray) { |
| *gray = clip01(color->c[0]); |
| } |
| |
| void GfxDeviceGrayColorSpace::getGrayLine(Guchar *in, Guchar *out, int length) { |
| memcpy (out, in, length); |
| } |
| |
| void GfxDeviceGrayColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { |
| rgb->r = rgb->g = rgb->b = clip01(color->c[0]); |
| } |
| |
| void GfxDeviceGrayColorSpace::getRGBLine(Guchar *in, unsigned int *out, |
| int length) { |
| int i; |
| |
| for (i = 0; i < length; i++) |
| out[i] = (in[i] << 16) | (in[i] << 8) | (in[i] << 0); |
| } |
| |
| void GfxDeviceGrayColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { |
| cmyk->c = cmyk->m = cmyk->y = 0; |
| cmyk->k = clip01(gfxColorComp1 - color->c[0]); |
| } |
| |
| void GfxDeviceGrayColorSpace::getDefaultColor(GfxColor *color) { |
| color->c[0] = 0; |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxCalGrayColorSpace |
| //------------------------------------------------------------------------ |
| |
| GfxCalGrayColorSpace::GfxCalGrayColorSpace() { |
| whiteX = whiteY = whiteZ = 1; |
| blackX = blackY = blackZ = 0; |
| gamma = 1; |
| } |
| |
| GfxCalGrayColorSpace::~GfxCalGrayColorSpace() { |
| } |
| |
| GfxColorSpace *GfxCalGrayColorSpace::copy() { |
| GfxCalGrayColorSpace *cs; |
| |
| cs = new GfxCalGrayColorSpace(); |
| cs->whiteX = whiteX; |
| cs->whiteY = whiteY; |
| cs->whiteZ = whiteZ; |
| cs->blackX = blackX; |
| cs->blackY = blackY; |
| cs->blackZ = blackZ; |
| cs->gamma = gamma; |
| return cs; |
| } |
| |
| // This is the inverse of MatrixLMN in Example 4.10 from the PostScript |
| // Language Reference, Third Edition. |
| static const double xyzrgb[3][3] = { |
| { 3.240449, -1.537136, -0.498531 }, |
| { -0.969265, 1.876011, 0.041556 }, |
| { 0.055643, -0.204026, 1.057229 } |
| }; |
| |
| GfxColorSpace *GfxCalGrayColorSpace::parse(Array *arr) { |
| GfxCalGrayColorSpace *cs; |
| Object obj1, obj2, obj3; |
| |
| arr->get(1, &obj1); |
| if (!obj1.isDict()) { |
| error(-1, "Bad CalGray color space"); |
| obj1.free(); |
| return NULL; |
| } |
| cs = new GfxCalGrayColorSpace(); |
| if (obj1.dictLookup("WhitePoint", &obj2)->isArray() && |
| obj2.arrayGetLength() == 3) { |
| obj2.arrayGet(0, &obj3); |
| cs->whiteX = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(1, &obj3); |
| cs->whiteY = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(2, &obj3); |
| cs->whiteZ = obj3.getNum(); |
| obj3.free(); |
| } |
| obj2.free(); |
| if (obj1.dictLookup("BlackPoint", &obj2)->isArray() && |
| obj2.arrayGetLength() == 3) { |
| obj2.arrayGet(0, &obj3); |
| cs->blackX = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(1, &obj3); |
| cs->blackY = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(2, &obj3); |
| cs->blackZ = obj3.getNum(); |
| obj3.free(); |
| } |
| obj2.free(); |
| if (obj1.dictLookup("Gamma", &obj2)->isNum()) { |
| cs->gamma = obj2.getNum(); |
| } |
| obj2.free(); |
| obj1.free(); |
| |
| cs->kr = 1 / (xyzrgb[0][0] * cs->whiteX + |
| xyzrgb[0][1] * cs->whiteY + |
| xyzrgb[0][2] * cs->whiteZ); |
| cs->kg = 1 / (xyzrgb[1][0] * cs->whiteX + |
| xyzrgb[1][1] * cs->whiteY + |
| xyzrgb[1][2] * cs->whiteZ); |
| cs->kb = 1 / (xyzrgb[2][0] * cs->whiteX + |
| xyzrgb[2][1] * cs->whiteY + |
| xyzrgb[2][2] * cs->whiteZ); |
| |
| return cs; |
| } |
| |
| // convert CalGray to media XYZ color space |
| // (not multiply by the white point) |
| void GfxCalGrayColorSpace::getXYZ(GfxColor *color, |
| double *pX, double *pY, double *pZ) { |
| double A; |
| |
| A = colToDbl(color->c[0]); |
| *pX = pow(A,gamma); |
| *pY = pow(A,gamma); |
| *pZ = pow(A,gamma); |
| } |
| |
| void GfxCalGrayColorSpace::getGray(GfxColor *color, GfxGray *gray) { |
| GfxRGB rgb; |
| |
| #ifdef USE_CMS |
| if (XYZ2DisplayTransform != NULL && displayPixelType == PT_GRAY) { |
| Guchar out[gfxColorMaxComps]; |
| double in[gfxColorMaxComps]; |
| double X, Y, Z; |
| |
| getXYZ(color,&X,&Y,&Z); |
| in[0] = clip01(X); |
| in[1] = clip01(Y); |
| in[2] = clip01(Z); |
| XYZ2DisplayTransform->doTransform(in,out,1); |
| *gray = byteToCol(out[0]); |
| return; |
| } |
| #endif |
| getRGB(color, &rgb); |
| *gray = clip01((GfxColorComp)(0.299 * rgb.r + |
| 0.587 * rgb.g + |
| 0.114 * rgb.b + 0.5)); |
| } |
| |
| void GfxCalGrayColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { |
| double X, Y, Z; |
| double r, g, b; |
| |
| getXYZ(color,&X,&Y,&Z); |
| #ifdef USE_CMS |
| if (XYZ2DisplayTransform != NULL && displayPixelType == PT_RGB) { |
| Guchar out[gfxColorMaxComps]; |
| double in[gfxColorMaxComps]; |
| |
| in[0] = clip01(X); |
| in[1] = clip01(Y); |
| in[2] = clip01(Z); |
| XYZ2DisplayTransform->doTransform(in,out,1); |
| rgb->r = byteToCol(out[0]); |
| rgb->g = byteToCol(out[1]); |
| rgb->b = byteToCol(out[2]); |
| return; |
| } |
| #endif |
| X *= whiteX; |
| Y *= whiteY; |
| Z *= whiteZ; |
| // convert XYZ to RGB, including gamut mapping and gamma correction |
| r = xyzrgb[0][0] * X + xyzrgb[0][1] * Y + xyzrgb[0][2] * Z; |
| g = xyzrgb[1][0] * X + xyzrgb[1][1] * Y + xyzrgb[1][2] * Z; |
| b = xyzrgb[2][0] * X + xyzrgb[2][1] * Y + xyzrgb[2][2] * Z; |
| rgb->r = dblToCol(sqrt(clip01(r * kr))); |
| rgb->g = dblToCol(sqrt(clip01(g * kg))); |
| rgb->b = dblToCol(sqrt(clip01(b * kb))); |
| } |
| |
| void GfxCalGrayColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { |
| GfxRGB rgb; |
| GfxColorComp c, m, y, k; |
| |
| #ifdef USE_CMS |
| if (XYZ2DisplayTransform != NULL && displayPixelType == PT_CMYK) { |
| double in[gfxColorMaxComps]; |
| Guchar out[gfxColorMaxComps]; |
| double X, Y, Z; |
| |
| getXYZ(color,&X,&Y,&Z); |
| in[0] = clip01(X); |
| in[1] = clip01(Y); |
| in[2] = clip01(Z); |
| |
| XYZ2DisplayTransform->doTransform(in,out,1); |
| cmyk->c = byteToCol(out[0]); |
| cmyk->m = byteToCol(out[1]); |
| cmyk->y = byteToCol(out[2]); |
| cmyk->k = byteToCol(out[3]); |
| return; |
| } |
| #endif |
| getRGB(color, &rgb); |
| c = clip01(gfxColorComp1 - rgb.r); |
| m = clip01(gfxColorComp1 - rgb.g); |
| y = clip01(gfxColorComp1 - rgb.b); |
| k = c; |
| if (m < k) { |
| k = m; |
| } |
| if (y < k) { |
| k = y; |
| } |
| cmyk->c = c - k; |
| cmyk->m = m - k; |
| cmyk->y = y - k; |
| cmyk->k = k; |
| } |
| |
| void GfxCalGrayColorSpace::getDefaultColor(GfxColor *color) { |
| color->c[0] = 0; |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxDeviceRGBColorSpace |
| //------------------------------------------------------------------------ |
| |
| GfxDeviceRGBColorSpace::GfxDeviceRGBColorSpace() { |
| } |
| |
| GfxDeviceRGBColorSpace::~GfxDeviceRGBColorSpace() { |
| } |
| |
| GfxColorSpace *GfxDeviceRGBColorSpace::copy() { |
| return new GfxDeviceRGBColorSpace(); |
| } |
| |
| void GfxDeviceRGBColorSpace::getGray(GfxColor *color, GfxGray *gray) { |
| *gray = clip01((GfxColorComp)(0.3 * color->c[0] + |
| 0.59 * color->c[1] + |
| 0.11 * color->c[2] + 0.5)); |
| } |
| |
| void GfxDeviceRGBColorSpace::getGrayLine(Guchar *in, Guchar *out, int length) { |
| int i; |
| |
| for (i = 0; i < length; i++) { |
| out[i] = |
| (in[i * 3 + 0] * 19595 + |
| in[i * 3 + 1] * 38469 + |
| in[i * 3 + 2] * 7472) / 65536; |
| } |
| } |
| |
| void GfxDeviceRGBColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { |
| rgb->r = clip01(color->c[0]); |
| rgb->g = clip01(color->c[1]); |
| rgb->b = clip01(color->c[2]); |
| } |
| |
| void GfxDeviceRGBColorSpace::getRGBLine(Guchar *in, unsigned int *out, |
| int length) { |
| Guchar *p; |
| int i; |
| |
| for (i = 0, p = in; i < length; i++, p += 3) |
| out[i] = (p[0] << 16) | (p[1] << 8) | (p[2] << 0); |
| } |
| |
| void GfxDeviceRGBColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { |
| GfxColorComp c, m, y, k; |
| |
| c = clip01(gfxColorComp1 - color->c[0]); |
| m = clip01(gfxColorComp1 - color->c[1]); |
| y = clip01(gfxColorComp1 - color->c[2]); |
| k = c; |
| if (m < k) { |
| k = m; |
| } |
| if (y < k) { |
| k = y; |
| } |
| cmyk->c = c - k; |
| cmyk->m = m - k; |
| cmyk->y = y - k; |
| cmyk->k = k; |
| } |
| |
| void GfxDeviceRGBColorSpace::getDefaultColor(GfxColor *color) { |
| color->c[0] = 0; |
| color->c[1] = 0; |
| color->c[2] = 0; |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxCalRGBColorSpace |
| //------------------------------------------------------------------------ |
| |
| GfxCalRGBColorSpace::GfxCalRGBColorSpace() { |
| whiteX = whiteY = whiteZ = 1; |
| blackX = blackY = blackZ = 0; |
| gammaR = gammaG = gammaB = 1; |
| mat[0] = 1; mat[1] = 0; mat[2] = 0; |
| mat[3] = 0; mat[4] = 1; mat[5] = 0; |
| mat[6] = 0; mat[7] = 0; mat[8] = 1; |
| } |
| |
| GfxCalRGBColorSpace::~GfxCalRGBColorSpace() { |
| } |
| |
| GfxColorSpace *GfxCalRGBColorSpace::copy() { |
| GfxCalRGBColorSpace *cs; |
| int i; |
| |
| cs = new GfxCalRGBColorSpace(); |
| cs->whiteX = whiteX; |
| cs->whiteY = whiteY; |
| cs->whiteZ = whiteZ; |
| cs->blackX = blackX; |
| cs->blackY = blackY; |
| cs->blackZ = blackZ; |
| cs->gammaR = gammaR; |
| cs->gammaG = gammaG; |
| cs->gammaB = gammaB; |
| for (i = 0; i < 9; ++i) { |
| cs->mat[i] = mat[i]; |
| } |
| return cs; |
| } |
| |
| GfxColorSpace *GfxCalRGBColorSpace::parse(Array *arr) { |
| GfxCalRGBColorSpace *cs; |
| Object obj1, obj2, obj3; |
| int i; |
| |
| arr->get(1, &obj1); |
| if (!obj1.isDict()) { |
| error(-1, "Bad CalRGB color space"); |
| obj1.free(); |
| return NULL; |
| } |
| cs = new GfxCalRGBColorSpace(); |
| if (obj1.dictLookup("WhitePoint", &obj2)->isArray() && |
| obj2.arrayGetLength() == 3) { |
| obj2.arrayGet(0, &obj3); |
| cs->whiteX = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(1, &obj3); |
| cs->whiteY = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(2, &obj3); |
| cs->whiteZ = obj3.getNum(); |
| obj3.free(); |
| } |
| obj2.free(); |
| if (obj1.dictLookup("BlackPoint", &obj2)->isArray() && |
| obj2.arrayGetLength() == 3) { |
| obj2.arrayGet(0, &obj3); |
| cs->blackX = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(1, &obj3); |
| cs->blackY = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(2, &obj3); |
| cs->blackZ = obj3.getNum(); |
| obj3.free(); |
| } |
| obj2.free(); |
| if (obj1.dictLookup("Gamma", &obj2)->isArray() && |
| obj2.arrayGetLength() == 3) { |
| obj2.arrayGet(0, &obj3); |
| cs->gammaR = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(1, &obj3); |
| cs->gammaG = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(2, &obj3); |
| cs->gammaB = obj3.getNum(); |
| obj3.free(); |
| } |
| obj2.free(); |
| if (obj1.dictLookup("Matrix", &obj2)->isArray() && |
| obj2.arrayGetLength() == 9) { |
| for (i = 0; i < 9; ++i) { |
| obj2.arrayGet(i, &obj3); |
| cs->mat[i] = obj3.getNum(); |
| obj3.free(); |
| } |
| } |
| obj2.free(); |
| obj1.free(); |
| |
| cs->kr = 1 / (xyzrgb[0][0] * cs->whiteX + |
| xyzrgb[0][1] * cs->whiteY + |
| xyzrgb[0][2] * cs->whiteZ); |
| cs->kg = 1 / (xyzrgb[1][0] * cs->whiteX + |
| xyzrgb[1][1] * cs->whiteY + |
| xyzrgb[1][2] * cs->whiteZ); |
| cs->kb = 1 / (xyzrgb[2][0] * cs->whiteX + |
| xyzrgb[2][1] * cs->whiteY + |
| xyzrgb[2][2] * cs->whiteZ); |
| |
| return cs; |
| } |
| |
| // convert CalRGB to XYZ color space |
| void GfxCalRGBColorSpace::getXYZ(GfxColor *color, |
| double *pX, double *pY, double *pZ) { |
| double A, B, C; |
| |
| A = pow(colToDbl(color->c[0]), gammaR); |
| B = pow(colToDbl(color->c[1]), gammaG); |
| C = pow(colToDbl(color->c[2]), gammaB); |
| *pX = mat[0] * A + mat[3] * B + mat[6] * C; |
| *pY = mat[1] * A + mat[4] * B + mat[7] * C; |
| *pZ = mat[2] * A + mat[5] * B + mat[8] * C; |
| } |
| |
| void GfxCalRGBColorSpace::getGray(GfxColor *color, GfxGray *gray) { |
| GfxRGB rgb; |
| |
| #ifdef USE_CMS |
| if (XYZ2DisplayTransform != NULL && displayPixelType == PT_GRAY) { |
| Guchar out[gfxColorMaxComps]; |
| double in[gfxColorMaxComps]; |
| double X, Y, Z; |
| |
| getXYZ(color,&X,&Y,&Z); |
| in[0] = clip01(X); |
| in[1] = clip01(Y); |
| in[2] = clip01(Z); |
| XYZ2DisplayTransform->doTransform(in,out,1); |
| *gray = byteToCol(out[0]); |
| return; |
| } |
| #endif |
| getRGB(color, &rgb); |
| *gray = clip01((GfxColorComp)(0.299 * rgb.r + |
| 0.587 * rgb.g + |
| 0.114 * rgb.b + 0.5)); |
| } |
| |
| void GfxCalRGBColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { |
| double X, Y, Z; |
| double r, g, b; |
| |
| getXYZ(color,&X,&Y,&Z); |
| #ifdef USE_CMS |
| if (XYZ2DisplayTransform != NULL && displayPixelType == PT_RGB) { |
| Guchar out[gfxColorMaxComps]; |
| double in[gfxColorMaxComps]; |
| |
| in[0] = clip01(X/whiteX); |
| in[1] = clip01(Y/whiteY); |
| in[2] = clip01(Z/whiteZ); |
| XYZ2DisplayTransform->doTransform(in,out,1); |
| rgb->r = byteToCol(out[0]); |
| rgb->g = byteToCol(out[1]); |
| rgb->b = byteToCol(out[2]); |
| return; |
| } |
| #endif |
| // convert XYZ to RGB, including gamut mapping and gamma correction |
| r = xyzrgb[0][0] * X + xyzrgb[0][1] * Y + xyzrgb[0][2] * Z; |
| g = xyzrgb[1][0] * X + xyzrgb[1][1] * Y + xyzrgb[1][2] * Z; |
| b = xyzrgb[2][0] * X + xyzrgb[2][1] * Y + xyzrgb[2][2] * Z; |
| rgb->r = dblToCol(sqrt(clip01(r))); |
| rgb->g = dblToCol(sqrt(clip01(g))); |
| rgb->b = dblToCol(sqrt(clip01(b))); |
| } |
| |
| void GfxCalRGBColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { |
| GfxRGB rgb; |
| GfxColorComp c, m, y, k; |
| |
| #ifdef USE_CMS |
| if (XYZ2DisplayTransform != NULL && displayPixelType == PT_CMYK) { |
| double in[gfxColorMaxComps]; |
| Guchar out[gfxColorMaxComps]; |
| double X, Y, Z; |
| |
| getXYZ(color,&X,&Y,&Z); |
| in[0] = clip01(X); |
| in[1] = clip01(Y); |
| in[2] = clip01(Z); |
| XYZ2DisplayTransform->doTransform(in,out,1); |
| cmyk->c = byteToCol(out[0]); |
| cmyk->m = byteToCol(out[1]); |
| cmyk->y = byteToCol(out[2]); |
| cmyk->k = byteToCol(out[3]); |
| return; |
| } |
| #endif |
| getRGB(color, &rgb); |
| c = clip01(gfxColorComp1 - rgb.r); |
| m = clip01(gfxColorComp1 - rgb.g); |
| y = clip01(gfxColorComp1 - rgb.b); |
| k = c; |
| if (m < k) { |
| k = m; |
| } |
| if (y < k) { |
| k = y; |
| } |
| cmyk->c = c - k; |
| cmyk->m = m - k; |
| cmyk->y = y - k; |
| cmyk->k = k; |
| } |
| |
| void GfxCalRGBColorSpace::getDefaultColor(GfxColor *color) { |
| color->c[0] = 0; |
| color->c[1] = 0; |
| color->c[2] = 0; |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxDeviceCMYKColorSpace |
| //------------------------------------------------------------------------ |
| |
| GfxDeviceCMYKColorSpace::GfxDeviceCMYKColorSpace() { |
| } |
| |
| GfxDeviceCMYKColorSpace::~GfxDeviceCMYKColorSpace() { |
| } |
| |
| GfxColorSpace *GfxDeviceCMYKColorSpace::copy() { |
| return new GfxDeviceCMYKColorSpace(); |
| } |
| |
| void GfxDeviceCMYKColorSpace::getGray(GfxColor *color, GfxGray *gray) { |
| *gray = clip01((GfxColorComp)(gfxColorComp1 - color->c[3] |
| - 0.3 * color->c[0] |
| - 0.59 * color->c[1] |
| - 0.11 * color->c[2] + 0.5)); |
| } |
| |
| void GfxDeviceCMYKColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { |
| double c, m, y, k, c1, m1, y1, k1, r, g, b; |
| |
| c = colToDbl(color->c[0]); |
| m = colToDbl(color->c[1]); |
| y = colToDbl(color->c[2]); |
| k = colToDbl(color->c[3]); |
| c1 = 1 - c; |
| m1 = 1 - m; |
| y1 = 1 - y; |
| k1 = 1 - k; |
| cmykToRGBMatrixMultiplication(c, m, y, k, c1, m1, y1, k1, r, g, b); |
| rgb->r = clip01(dblToCol(r)); |
| rgb->g = clip01(dblToCol(g)); |
| rgb->b = clip01(dblToCol(b)); |
| } |
| |
| void GfxDeviceCMYKColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { |
| cmyk->c = clip01(color->c[0]); |
| cmyk->m = clip01(color->c[1]); |
| cmyk->y = clip01(color->c[2]); |
| cmyk->k = clip01(color->c[3]); |
| } |
| |
| void GfxDeviceCMYKColorSpace::getDefaultColor(GfxColor *color) { |
| color->c[0] = 0; |
| color->c[1] = 0; |
| color->c[2] = 0; |
| color->c[3] = gfxColorComp1; |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxLabColorSpace |
| //------------------------------------------------------------------------ |
| |
| GfxLabColorSpace::GfxLabColorSpace() { |
| whiteX = whiteY = whiteZ = 1; |
| blackX = blackY = blackZ = 0; |
| aMin = bMin = -100; |
| aMax = bMax = 100; |
| } |
| |
| GfxLabColorSpace::~GfxLabColorSpace() { |
| } |
| |
| GfxColorSpace *GfxLabColorSpace::copy() { |
| GfxLabColorSpace *cs; |
| |
| cs = new GfxLabColorSpace(); |
| cs->whiteX = whiteX; |
| cs->whiteY = whiteY; |
| cs->whiteZ = whiteZ; |
| cs->blackX = blackX; |
| cs->blackY = blackY; |
| cs->blackZ = blackZ; |
| cs->aMin = aMin; |
| cs->aMax = aMax; |
| cs->bMin = bMin; |
| cs->bMax = bMax; |
| cs->kr = kr; |
| cs->kg = kg; |
| cs->kb = kb; |
| return cs; |
| } |
| |
| GfxColorSpace *GfxLabColorSpace::parse(Array *arr) { |
| GfxLabColorSpace *cs; |
| Object obj1, obj2, obj3; |
| |
| arr->get(1, &obj1); |
| if (!obj1.isDict()) { |
| error(-1, "Bad Lab color space"); |
| obj1.free(); |
| return NULL; |
| } |
| cs = new GfxLabColorSpace(); |
| if (obj1.dictLookup("WhitePoint", &obj2)->isArray() && |
| obj2.arrayGetLength() == 3) { |
| obj2.arrayGet(0, &obj3); |
| cs->whiteX = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(1, &obj3); |
| cs->whiteY = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(2, &obj3); |
| cs->whiteZ = obj3.getNum(); |
| obj3.free(); |
| } |
| obj2.free(); |
| if (obj1.dictLookup("BlackPoint", &obj2)->isArray() && |
| obj2.arrayGetLength() == 3) { |
| obj2.arrayGet(0, &obj3); |
| cs->blackX = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(1, &obj3); |
| cs->blackY = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(2, &obj3); |
| cs->blackZ = obj3.getNum(); |
| obj3.free(); |
| } |
| obj2.free(); |
| if (obj1.dictLookup("Range", &obj2)->isArray() && |
| obj2.arrayGetLength() == 4) { |
| obj2.arrayGet(0, &obj3); |
| cs->aMin = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(1, &obj3); |
| cs->aMax = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(2, &obj3); |
| cs->bMin = obj3.getNum(); |
| obj3.free(); |
| obj2.arrayGet(3, &obj3); |
| cs->bMax = obj3.getNum(); |
| obj3.free(); |
| } |
| obj2.free(); |
| obj1.free(); |
| |
| cs->kr = 1 / (xyzrgb[0][0] * cs->whiteX + |
| xyzrgb[0][1] * cs->whiteY + |
| xyzrgb[0][2] * cs->whiteZ); |
| cs->kg = 1 / (xyzrgb[1][0] * cs->whiteX + |
| xyzrgb[1][1] * cs->whiteY + |
| xyzrgb[1][2] * cs->whiteZ); |
| cs->kb = 1 / (xyzrgb[2][0] * cs->whiteX + |
| xyzrgb[2][1] * cs->whiteY + |
| xyzrgb[2][2] * cs->whiteZ); |
| |
| return cs; |
| } |
| |
| void GfxLabColorSpace::getGray(GfxColor *color, GfxGray *gray) { |
| GfxRGB rgb; |
| |
| #ifdef USE_CMS |
| if (XYZ2DisplayTransform != NULL && displayPixelType == PT_GRAY) { |
| Guchar out[gfxColorMaxComps]; |
| double in[gfxColorMaxComps]; |
| |
| getXYZ(color, &in[0], &in[1], &in[2]); |
| XYZ2DisplayTransform->doTransform(in,out,1); |
| *gray = byteToCol(out[0]); |
| return; |
| } |
| #endif |
| getRGB(color, &rgb); |
| *gray = clip01((GfxColorComp)(0.299 * rgb.r + |
| 0.587 * rgb.g + |
| 0.114 * rgb.b + 0.5)); |
| } |
| |
| // convert L*a*b* to media XYZ color space |
| // (not multiply by the white point) |
| void GfxLabColorSpace::getXYZ(GfxColor *color, |
| double *pX, double *pY, double *pZ) { |
| double X, Y, Z; |
| double t1, t2; |
| |
| t1 = (colToDbl(color->c[0]) + 16) / 116; |
| t2 = t1 + colToDbl(color->c[1]) / 500; |
| if (t2 >= (6.0 / 29.0)) { |
| X = t2 * t2 * t2; |
| } else { |
| X = (108.0 / 841.0) * (t2 - (4.0 / 29.0)); |
| } |
| if (t1 >= (6.0 / 29.0)) { |
| Y = t1 * t1 * t1; |
| } else { |
| Y = (108.0 / 841.0) * (t1 - (4.0 / 29.0)); |
| } |
| t2 = t1 - colToDbl(color->c[2]) / 200; |
| if (t2 >= (6.0 / 29.0)) { |
| Z = t2 * t2 * t2; |
| } else { |
| Z = (108.0 / 841.0) * (t2 - (4.0 / 29.0)); |
| } |
| *pX = X; |
| *pY = Y; |
| *pZ = Z; |
| } |
| |
| void GfxLabColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { |
| double X, Y, Z; |
| double r, g, b; |
| |
| getXYZ(color, &X, &Y, &Z); |
| #ifdef USE_CMS |
| if (XYZ2DisplayTransform != NULL && displayPixelType == PT_RGB) { |
| Guchar out[gfxColorMaxComps]; |
| double in[gfxColorMaxComps]; |
| |
| in[0] = clip01(X); |
| in[1] = clip01(Y); |
| in[2] = clip01(Z); |
| XYZ2DisplayTransform->doTransform(in,out,1); |
| rgb->r = byteToCol(out[0]); |
| rgb->g = byteToCol(out[1]); |
| rgb->b = byteToCol(out[2]); |
| return; |
| } |
| #endif |
| X *= whiteX; |
| Y *= whiteY; |
| Z *= whiteZ; |
| // convert XYZ to RGB, including gamut mapping and gamma correction |
| r = xyzrgb[0][0] * X + xyzrgb[0][1] * Y + xyzrgb[0][2] * Z; |
| g = xyzrgb[1][0] * X + xyzrgb[1][1] * Y + xyzrgb[1][2] * Z; |
| b = xyzrgb[2][0] * X + xyzrgb[2][1] * Y + xyzrgb[2][2] * Z; |
| rgb->r = dblToCol(sqrt(clip01(r * kr))); |
| rgb->g = dblToCol(sqrt(clip01(g * kg))); |
| rgb->b = dblToCol(sqrt(clip01(b * kb))); |
| } |
| |
| void GfxLabColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { |
| GfxRGB rgb; |
| GfxColorComp c, m, y, k; |
| |
| #ifdef USE_CMS |
| if (XYZ2DisplayTransform != NULL && displayPixelType == PT_CMYK) { |
| double in[gfxColorMaxComps]; |
| Guchar out[gfxColorMaxComps]; |
| |
| getXYZ(color, &in[0], &in[1], &in[2]); |
| XYZ2DisplayTransform->doTransform(in,out,1); |
| cmyk->c = byteToCol(out[0]); |
| cmyk->m = byteToCol(out[1]); |
| cmyk->y = byteToCol(out[2]); |
| cmyk->k = byteToCol(out[3]); |
| return; |
| } |
| #endif |
| getRGB(color, &rgb); |
| c = clip01(gfxColorComp1 - rgb.r); |
| m = clip01(gfxColorComp1 - rgb.g); |
| y = clip01(gfxColorComp1 - rgb.b); |
| k = c; |
| if (m < k) { |
| k = m; |
| } |
| if (y < k) { |
| k = y; |
| } |
| cmyk->c = c - k; |
| cmyk->m = m - k; |
| cmyk->y = y - k; |
| cmyk->k = k; |
| } |
| |
| void GfxLabColorSpace::getDefaultColor(GfxColor *color) { |
| color->c[0] = 0; |
| if (aMin > 0) { |
| color->c[1] = dblToCol(aMin); |
| } else if (aMax < 0) { |
| color->c[1] = dblToCol(aMax); |
| } else { |
| color->c[1] = 0; |
| } |
| if (bMin > 0) { |
| color->c[2] = dblToCol(bMin); |
| } else if (bMax < 0) { |
| color->c[2] = dblToCol(bMax); |
| } else { |
| color->c[2] = 0; |
| } |
| } |
| |
| void GfxLabColorSpace::getDefaultRanges(double *decodeLow, double *decodeRange, |
| int maxImgPixel) { |
| decodeLow[0] = 0; |
| decodeRange[0] = 100; |
| decodeLow[1] = aMin; |
| decodeRange[1] = aMax - aMin; |
| decodeLow[2] = bMin; |
| decodeRange[2] = bMax - bMin; |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxICCBasedColorSpace |
| //------------------------------------------------------------------------ |
| |
| class GfxICCBasedColorSpaceKey : public PopplerCacheKey |
| { |
| public: |
| GfxICCBasedColorSpaceKey(int numA, int genA) : num(numA), gen(genA) |
| { |
| } |
| |
| bool operator==(const PopplerCacheKey &key) const |
| { |
| const GfxICCBasedColorSpaceKey *k = static_cast<const GfxICCBasedColorSpaceKey*>(&key); |
| return k->num == num && k->gen == gen; |
| } |
| |
| int num, gen; |
| }; |
| |
| class GfxICCBasedColorSpaceItem : public PopplerCacheItem |
| { |
| public: |
| GfxICCBasedColorSpaceItem(GfxICCBasedColorSpace *csA) |
| { |
| cs = static_cast<GfxICCBasedColorSpace*>(csA->copy()); |
| } |
| |
| ~GfxICCBasedColorSpaceItem() |
| { |
| delete cs; |
| } |
| |
| GfxICCBasedColorSpace *cs; |
| }; |
| |
| GfxICCBasedColorSpace::GfxICCBasedColorSpace(int nCompsA, GfxColorSpace *altA, |
| Ref *iccProfileStreamA) { |
| nComps = nCompsA; |
| alt = altA; |
| iccProfileStream = *iccProfileStreamA; |
| rangeMin[0] = rangeMin[1] = rangeMin[2] = rangeMin[3] = 0; |
| rangeMax[0] = rangeMax[1] = rangeMax[2] = rangeMax[3] = 1; |
| #ifdef USE_CMS |
| transform = NULL; |
| lineTransform = NULL; |
| #endif |
| } |
| |
| GfxICCBasedColorSpace::~GfxICCBasedColorSpace() { |
| delete alt; |
| #ifdef USE_CMS |
| if (transform != NULL) { |
| if (transform->unref() == 0) delete transform; |
| } |
| if (lineTransform != NULL) { |
| if (lineTransform->unref() == 0) delete lineTransform; |
| } |
| #endif |
| } |
| |
| GfxColorSpace *GfxICCBasedColorSpace::copy() { |
| GfxICCBasedColorSpace *cs; |
| int i; |
| |
| cs = new GfxICCBasedColorSpace(nComps, alt->copy(), &iccProfileStream); |
| for (i = 0; i < 4; ++i) { |
| cs->rangeMin[i] = rangeMin[i]; |
| cs->rangeMax[i] = rangeMax[i]; |
| } |
| #ifdef USE_CMS |
| cs->transform = transform; |
| if (transform != NULL) transform->ref(); |
| cs->lineTransform = lineTransform; |
| if (lineTransform != NULL) lineTransform->ref(); |
| #endif |
| return cs; |
| } |
| |
| GfxColorSpace *GfxICCBasedColorSpace::parse(Array *arr, Gfx *gfx) { |
| GfxICCBasedColorSpace *cs; |
| Ref iccProfileStreamA; |
| int nCompsA; |
| GfxColorSpace *altA; |
| Dict *dict; |
| Object obj1, obj2, obj3; |
| int i; |
| |
| arr->getNF(1, &obj1); |
| if (obj1.isRef()) { |
| iccProfileStreamA = obj1.getRef(); |
| } else { |
| iccProfileStreamA.num = 0; |
| iccProfileStreamA.gen = 0; |
| } |
| obj1.free(); |
| #ifdef USE_CMS |
| // check cache |
| if (gfx && iccProfileStreamA.num > 0) { |
| GfxICCBasedColorSpaceKey k(iccProfileStreamA.num, iccProfileStreamA.gen); |
| GfxICCBasedColorSpaceItem *item = static_cast<GfxICCBasedColorSpaceItem *>(gfx->getIccColorSpaceCache()->lookup(k)); |
| if (item != NULL) |
| { |
| cs = static_cast<GfxICCBasedColorSpace*>(item->cs->copy()); |
| return cs; |
| } |
| } |
| #endif |
| arr->get(1, &obj1); |
| if (!obj1.isStream()) { |
| error(-1, "Bad ICCBased color space (stream)"); |
| obj1.free(); |
| return NULL; |
| } |
| dict = obj1.streamGetDict(); |
| if (!dict->lookup("N", &obj2)->isInt()) { |
| error(-1, "Bad ICCBased color space (N)"); |
| obj2.free(); |
| obj1.free(); |
| return NULL; |
| } |
| nCompsA = obj2.getInt(); |
| obj2.free(); |
| if (nCompsA > gfxColorMaxComps) { |
| error(-1, "ICCBased color space with too many (%d > %d) components", |
| nCompsA, gfxColorMaxComps); |
| nCompsA = gfxColorMaxComps; |
| } |
| if (dict->lookup("Alternate", &obj2)->isNull() || |
| !(altA = GfxColorSpace::parse(&obj2, gfx))) { |
| switch (nCompsA) { |
| case 1: |
| altA = new GfxDeviceGrayColorSpace(); |
| break; |
| case 3: |
| altA = new GfxDeviceRGBColorSpace(); |
| break; |
| case 4: |
| altA = new GfxDeviceCMYKColorSpace(); |
| break; |
| default: |
| error(-1, "Bad ICCBased color space - invalid N"); |
| obj2.free(); |
| obj1.free(); |
| return NULL; |
| } |
| } |
| obj2.free(); |
| cs = new GfxICCBasedColorSpace(nCompsA, altA, &iccProfileStreamA); |
| if (dict->lookup("Range", &obj2)->isArray() && |
| obj2.arrayGetLength() == 2 * nCompsA) { |
| Object obj4; |
| for (i = 0; i < nCompsA; ++i) { |
| obj2.arrayGet(2*i, &obj3); |
| obj2.arrayGet(2*i+1, &obj4); |
| if (obj3.isNum() && obj4.isNum()) { |
| cs->rangeMin[i] = obj3.getNum(); |
| cs->rangeMax[i] = obj4.getNum(); |
| } |
| obj3.free(); |
| obj4.free(); |
| } |
| } |
| obj2.free(); |
| obj1.free(); |
| |
| #ifdef USE_CMS |
| arr->get(1, &obj1); |
| dict = obj1.streamGetDict(); |
| Guchar *profBuf; |
| unsigned int bufSize; |
| Stream *iccStream = obj1.getStream(); |
| int c; |
| unsigned int size = 0; |
| |
| bufSize = 65536; |
| profBuf = (Guchar *)gmallocn(bufSize,1); |
| iccStream->reset(); |
| while ((c = iccStream->getChar()) != EOF) { |
| if (bufSize <= size) { |
| bufSize += 65536; |
| profBuf = (Guchar *)greallocn(profBuf,bufSize,1); |
| } |
| profBuf[size++] = c; |
| } |
| cmsHPROFILE hp = cmsOpenProfileFromMem(profBuf,size); |
| gfree(profBuf); |
| if (hp == 0) { |
| error(-1, "read ICCBased color space profile error"); |
| } else { |
| cmsHPROFILE dhp = displayProfile; |
| if (dhp == NULL) dhp = RGBProfile; |
| unsigned int cst = getCMSColorSpaceType(cmsGetColorSpace(hp)); |
| unsigned int dNChannels = getCMSNChannels(cmsGetColorSpace(dhp)); |
| unsigned int dcst = getCMSColorSpaceType(cmsGetColorSpace(dhp)); |
| cmsHTRANSFORM transform; |
| if ((transform = cmsCreateTransform(hp, |
| COLORSPACE_SH(cst) |CHANNELS_SH(nCompsA) | BYTES_SH(1), |
| dhp, |
| COLORSPACE_SH(dcst) | |
| CHANNELS_SH(dNChannels) | BYTES_SH(1), |
| INTENT_RELATIVE_COLORIMETRIC,0)) == 0) { |
| error(-1, "Can't create transform"); |
| cs->transform = NULL; |
| } else { |
| cs->transform = new GfxColorTransform(transform); |
| } |
| if (dcst == PT_RGB) { |
| // create line transform only when the display is RGB type color space |
| if ((transform = cmsCreateTransform(hp, |
| CHANNELS_SH(nCompsA) | BYTES_SH(1),dhp, |
| TYPE_RGB_8,INTENT_RELATIVE_COLORIMETRIC,0)) == 0) { |
| error(-1, "Can't create transform"); |
| cs->lineTransform = NULL; |
| } else { |
| cs->lineTransform = new GfxColorTransform(transform); |
| } |
| } |
| cmsCloseProfile(hp); |
| } |
| obj1.free(); |
| // put this colorSpace into cache |
| if (gfx && iccProfileStreamA.num > 0) { |
| GfxICCBasedColorSpaceKey *k = new GfxICCBasedColorSpaceKey(iccProfileStreamA.num, iccProfileStreamA.gen); |
| GfxICCBasedColorSpaceItem *item = new GfxICCBasedColorSpaceItem(cs); |
| gfx->getIccColorSpaceCache()->put(k, item); |
| } |
| #endif |
| return cs; |
| } |
| |
| void GfxICCBasedColorSpace::getGray(GfxColor *color, GfxGray *gray) { |
| #ifdef USE_CMS |
| if (transform != 0 && displayPixelType == PT_GRAY) { |
| Guchar in[gfxColorMaxComps]; |
| Guchar out[gfxColorMaxComps]; |
| |
| for (int i = 0;i < nComps;i++) { |
| in[i] = colToByte(color->c[i]); |
| } |
| transform->doTransform(in,out,1); |
| *gray = byteToCol(out[0]); |
| } else { |
| GfxRGB rgb; |
| getRGB(color,&rgb); |
| *gray = clip01((GfxColorComp)(0.3 * rgb.r + |
| 0.59 * rgb.g + |
| 0.11 * rgb.b + 0.5)); |
| } |
| #else |
| alt->getGray(color, gray); |
| #endif |
| } |
| |
| void GfxICCBasedColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { |
| #ifdef USE_CMS |
| if (transform != 0 |
| && (displayProfile == NULL || displayPixelType == PT_RGB)) { |
| Guchar in[gfxColorMaxComps]; |
| Guchar out[gfxColorMaxComps]; |
| |
| for (int i = 0;i < nComps;i++) { |
| in[i] = colToByte(color->c[i]); |
| } |
| transform->doTransform(in,out,1); |
| rgb->r = byteToCol(out[0]); |
| rgb->g = byteToCol(out[1]); |
| rgb->b = byteToCol(out[2]); |
| } else { |
| alt->getRGB(color, rgb); |
| } |
| #else |
| alt->getRGB(color, rgb); |
| #endif |
| } |
| |
| void GfxICCBasedColorSpace::getRGBLine(Guchar *in, unsigned int *out, |
| int length) { |
| #ifdef USE_CMS |
| if (lineTransform != 0) { |
| for (int i = 0;i < length;i++) { |
| Guchar tmp[gfxColorMaxComps]; |
| |
| lineTransform->doTransform(in,tmp,1); |
| in += nComps; |
| out[i] = (tmp[0] << 16) | (tmp[1] << 8) | tmp[2]; |
| } |
| } else { |
| alt->getRGBLine(in, out, length); |
| } |
| #else |
| alt->getRGBLine(in, out, length); |
| #endif |
| } |
| |
| void GfxICCBasedColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { |
| #ifdef USE_CMS |
| if (transform != NULL && displayPixelType == PT_CMYK) { |
| Guchar in[gfxColorMaxComps]; |
| Guchar out[gfxColorMaxComps]; |
| |
| for (int i = 0;i < nComps;i++) { |
| in[i] = colToByte(color->c[i]); |
| } |
| transform->doTransform(in,out,1); |
| cmyk->c = byteToCol(out[0]); |
| cmyk->m = byteToCol(out[1]); |
| cmyk->y = byteToCol(out[2]); |
| cmyk->k = byteToCol(out[3]); |
| } else { |
| GfxRGB rgb; |
| GfxColorComp c, m, y, k; |
| |
| getRGB(color,&rgb); |
| c = clip01(gfxColorComp1 - rgb.r); |
| m = clip01(gfxColorComp1 - rgb.g); |
| y = clip01(gfxColorComp1 - rgb.b); |
| k = c; |
| if (m < k) { |
| k = m; |
| } |
| if (y < k) { |
| k = y; |
| } |
| cmyk->c = c - k; |
| cmyk->m = m - k; |
| cmyk->y = y - k; |
| cmyk->k = k; |
| } |
| #else |
| alt->getCMYK(color, cmyk); |
| #endif |
| } |
| |
| GBool GfxICCBasedColorSpace::useGetRGBLine() { |
| #ifdef USE_CMS |
| return lineTransform != NULL || alt->useGetRGBLine(); |
| #else |
| return alt->useGetRGBLine(); |
| #endif |
| } |
| |
| void GfxICCBasedColorSpace::getDefaultColor(GfxColor *color) { |
| int i; |
| |
| for (i = 0; i < nComps; ++i) { |
| if (rangeMin[i] > 0) { |
| color->c[i] = dblToCol(rangeMin[i]); |
| } else if (rangeMax[i] < 0) { |
| color->c[i] = dblToCol(rangeMax[i]); |
| } else { |
| color->c[i] = 0; |
| } |
| } |
| } |
| |
| void GfxICCBasedColorSpace::getDefaultRanges(double *decodeLow, |
| double *decodeRange, |
| int maxImgPixel) { |
| alt->getDefaultRanges(decodeLow, decodeRange, maxImgPixel); |
| |
| #if 0 |
| // this is nominally correct, but some PDF files don't set the |
| // correct ranges in the ICCBased dict |
| int i; |
| |
| for (i = 0; i < nComps; ++i) { |
| decodeLow[i] = rangeMin[i]; |
| decodeRange[i] = rangeMax[i] - rangeMin[i]; |
| } |
| #endif |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxIndexedColorSpace |
| //------------------------------------------------------------------------ |
| |
| GfxIndexedColorSpace::GfxIndexedColorSpace(GfxColorSpace *baseA, |
| int indexHighA) { |
| base = baseA; |
| indexHigh = indexHighA; |
| lookup = (Guchar *)gmallocn((indexHigh + 1) * base->getNComps(), |
| sizeof(Guchar)); |
| } |
| |
| GfxIndexedColorSpace::~GfxIndexedColorSpace() { |
| delete base; |
| gfree(lookup); |
| } |
| |
| GfxColorSpace *GfxIndexedColorSpace::copy() { |
| GfxIndexedColorSpace *cs; |
| |
| cs = new GfxIndexedColorSpace(base->copy(), indexHigh); |
| memcpy(cs->lookup, lookup, |
| (indexHigh + 1) * base->getNComps() * sizeof(Guchar)); |
| return cs; |
| } |
| |
| GfxColorSpace *GfxIndexedColorSpace::parse(Array *arr, Gfx *gfx) { |
| GfxIndexedColorSpace *cs; |
| GfxColorSpace *baseA; |
| int indexHighA; |
| Object obj1; |
| int x; |
| char *s; |
| int n, i, j; |
| |
| if (arr->getLength() != 4) { |
| error(-1, "Bad Indexed color space"); |
| goto err1; |
| } |
| arr->get(1, &obj1); |
| if (!(baseA = GfxColorSpace::parse(&obj1, gfx))) { |
| error(-1, "Bad Indexed color space (base color space)"); |
| goto err2; |
| } |
| obj1.free(); |
| if (!arr->get(2, &obj1)->isInt()) { |
| error(-1, "Bad Indexed color space (hival)"); |
| delete baseA; |
| goto err2; |
| } |
| indexHighA = obj1.getInt(); |
| if (indexHighA < 0 || indexHighA > 255) { |
| // the PDF spec requires indexHigh to be in [0,255] -- allowing |
| // values larger than 255 creates a security hole: if nComps * |
| // indexHigh is greater than 2^31, the loop below may overwrite |
| // past the end of the array |
| int previousValue = indexHighA; |
| if (indexHighA < 0) indexHighA = 0; |
| else indexHighA = 255; |
| error(-1, "Bad Indexed color space (invalid indexHigh value, was %d using %d to try to recover)", previousValue, indexHighA); |
| } |
| obj1.free(); |
| cs = new GfxIndexedColorSpace(baseA, indexHighA); |
| arr->get(3, &obj1); |
| n = baseA->getNComps(); |
| if (obj1.isStream()) { |
| obj1.streamReset(); |
| for (i = 0; i <= indexHighA; ++i) { |
| for (j = 0; j < n; ++j) { |
| if ((x = obj1.streamGetChar()) == EOF) { |
| error(-1, "Bad Indexed color space (lookup table stream too short) padding with zeroes"); |
| x = 0; |
| } |
| cs->lookup[i*n + j] = (Guchar)x; |
| } |
| } |
| obj1.streamClose(); |
| } else if (obj1.isString()) { |
| if (obj1.getString()->getLength() < (indexHighA + 1) * n) { |
| error(-1, "Bad Indexed color space (lookup table string too short)"); |
| goto err3; |
| } |
| s = obj1.getString()->getCString(); |
| for (i = 0; i <= indexHighA; ++i) { |
| for (j = 0; j < n; ++j) { |
| cs->lookup[i*n + j] = (Guchar)*s++; |
| } |
| } |
| } else { |
| error(-1, "Bad Indexed color space (lookup table)"); |
| goto err3; |
| } |
| obj1.free(); |
| return cs; |
| |
| err3: |
| delete cs; |
| err2: |
| obj1.free(); |
| err1: |
| return NULL; |
| } |
| |
| GfxColor *GfxIndexedColorSpace::mapColorToBase(GfxColor *color, |
| GfxColor *baseColor) { |
| Guchar *p; |
| double low[gfxColorMaxComps], range[gfxColorMaxComps]; |
| int n, i; |
| |
| n = base->getNComps(); |
| base->getDefaultRanges(low, range, indexHigh); |
| p = &lookup[(int)(colToDbl(color->c[0]) + 0.5) * n]; |
| for (i = 0; i < n; ++i) { |
| baseColor->c[i] = dblToCol(low[i] + (p[i] / 255.0) * range[i]); |
| } |
| return baseColor; |
| } |
| |
| void GfxIndexedColorSpace::getGray(GfxColor *color, GfxGray *gray) { |
| GfxColor color2; |
| |
| base->getGray(mapColorToBase(color, &color2), gray); |
| } |
| |
| void GfxIndexedColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { |
| GfxColor color2; |
| |
| base->getRGB(mapColorToBase(color, &color2), rgb); |
| } |
| |
| void GfxIndexedColorSpace::getRGBLine(Guchar *in, unsigned int *out, int length) { |
| Guchar *line; |
| int i, j, n; |
| |
| n = base->getNComps(); |
| line = (Guchar *) gmallocn (length, n); |
| for (i = 0; i < length; i++) |
| for (j = 0; j < n; j++) |
| line[i * n + j] = lookup[in[i] * n + j]; |
| |
| base->getRGBLine(line, out, length); |
| |
| gfree (line); |
| } |
| |
| void GfxIndexedColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { |
| GfxColor color2; |
| |
| base->getCMYK(mapColorToBase(color, &color2), cmyk); |
| } |
| |
| void GfxIndexedColorSpace::getDefaultColor(GfxColor *color) { |
| color->c[0] = 0; |
| } |
| |
| void GfxIndexedColorSpace::getDefaultRanges(double *decodeLow, |
| double *decodeRange, |
| int maxImgPixel) { |
| decodeLow[0] = 0; |
| decodeRange[0] = maxImgPixel; |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxSeparationColorSpace |
| //------------------------------------------------------------------------ |
| |
| GfxSeparationColorSpace::GfxSeparationColorSpace(GooString *nameA, |
| GfxColorSpace *altA, |
| Function *funcA) { |
| name = nameA; |
| alt = altA; |
| func = funcA; |
| nonMarking = !name->cmp("None"); |
| } |
| |
| GfxSeparationColorSpace::~GfxSeparationColorSpace() { |
| delete name; |
| delete alt; |
| delete func; |
| } |
| |
| GfxColorSpace *GfxSeparationColorSpace::copy() { |
| return new GfxSeparationColorSpace(name->copy(), alt->copy(), func->copy()); |
| } |
| |
| //~ handle the 'All' and 'None' colorants |
| GfxColorSpace *GfxSeparationColorSpace::parse(Array *arr, Gfx *gfx) { |
| GfxSeparationColorSpace *cs; |
| GooString *nameA; |
| GfxColorSpace *altA; |
| Function *funcA; |
| Object obj1; |
| |
| if (arr->getLength() != 4) { |
| error(-1, "Bad Separation color space"); |
| goto err1; |
| } |
| if (!arr->get(1, &obj1)->isName()) { |
| error(-1, "Bad Separation color space (name)"); |
| goto err2; |
| } |
| nameA = new GooString(obj1.getName()); |
| obj1.free(); |
| arr->get(2, &obj1); |
| if (!(altA = GfxColorSpace::parse(&obj1, gfx))) { |
| error(-1, "Bad Separation color space (alternate color space)"); |
| goto err3; |
| } |
| obj1.free(); |
| arr->get(3, &obj1); |
| if (!(funcA = Function::parse(&obj1))) { |
| goto err4; |
| } |
| obj1.free(); |
| cs = new GfxSeparationColorSpace(nameA, altA, funcA); |
| return cs; |
| |
| err4: |
| delete altA; |
| err3: |
| delete nameA; |
| err2: |
| obj1.free(); |
| err1: |
| return NULL; |
| } |
| |
| void GfxSeparationColorSpace::getGray(GfxColor *color, GfxGray *gray) { |
| double x; |
| double c[gfxColorMaxComps]; |
| GfxColor color2; |
| int i; |
| |
| x = colToDbl(color->c[0]); |
| func->transform(&x, c); |
| for (i = 0; i < alt->getNComps(); ++i) { |
| color2.c[i] = dblToCol(c[i]); |
| } |
| alt->getGray(&color2, gray); |
| } |
| |
| void GfxSeparationColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { |
| double x; |
| double c[gfxColorMaxComps]; |
| GfxColor color2; |
| int i; |
| |
| x = colToDbl(color->c[0]); |
| func->transform(&x, c); |
| for (i = 0; i < alt->getNComps(); ++i) { |
| color2.c[i] = dblToCol(c[i]); |
| } |
| alt->getRGB(&color2, rgb); |
| } |
| |
| void GfxSeparationColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { |
| double x; |
| double c[gfxColorMaxComps]; |
| GfxColor color2; |
| int i; |
| |
| x = colToDbl(color->c[0]); |
| func->transform(&x, c); |
| for (i = 0; i < alt->getNComps(); ++i) { |
| color2.c[i] = dblToCol(c[i]); |
| } |
| alt->getCMYK(&color2, cmyk); |
| } |
| |
| void GfxSeparationColorSpace::getDefaultColor(GfxColor *color) { |
| color->c[0] = gfxColorComp1; |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxDeviceNColorSpace |
| //------------------------------------------------------------------------ |
| |
| GfxDeviceNColorSpace::GfxDeviceNColorSpace(int nCompsA, |
| GfxColorSpace *altA, |
| Function *funcA) { |
| nComps = nCompsA; |
| alt = altA; |
| func = funcA; |
| nonMarking = gFalse; |
| } |
| |
| GfxDeviceNColorSpace::~GfxDeviceNColorSpace() { |
| int i; |
| |
| for (i = 0; i < nComps; ++i) { |
| delete names[i]; |
| } |
| delete alt; |
| delete func; |
| } |
| |
| GfxColorSpace *GfxDeviceNColorSpace::copy() { |
| GfxDeviceNColorSpace *cs; |
| int i; |
| |
| cs = new GfxDeviceNColorSpace(nComps, alt->copy(), func->copy()); |
| for (i = 0; i < nComps; ++i) { |
| cs->names[i] = names[i]->copy(); |
| } |
| cs->nonMarking = nonMarking; |
| return cs; |
| } |
| |
| //~ handle the 'None' colorant |
| GfxColorSpace *GfxDeviceNColorSpace::parse(Array *arr, Gfx *gfx) { |
| GfxDeviceNColorSpace *cs; |
| int nCompsA; |
| GooString *namesA[gfxColorMaxComps]; |
| GfxColorSpace *altA; |
| Function *funcA; |
| Object obj1, obj2; |
| int i; |
| |
| if (arr->getLength() != 4 && arr->getLength() != 5) { |
| error(-1, "Bad DeviceN color space"); |
| goto err1; |
| } |
| if (!arr->get(1, &obj1)->isArray()) { |
| error(-1, "Bad DeviceN color space (names)"); |
| goto err2; |
| } |
| nCompsA = obj1.arrayGetLength(); |
| if (nCompsA > gfxColorMaxComps) { |
| error(-1, "DeviceN color space with too many (%d > %d) components", |
| nCompsA, gfxColorMaxComps); |
| nCompsA = gfxColorMaxComps; |
| } |
| for (i = 0; i < nCompsA; ++i) { |
| if (!obj1.arrayGet(i, &obj2)->isName()) { |
| error(-1, "Bad DeviceN color space (names)"); |
| obj2.free(); |
| goto err2; |
| } |
| namesA[i] = new GooString(obj2.getName()); |
| obj2.free(); |
| } |
| obj1.free(); |
| arr->get(2, &obj1); |
| if (!(altA = GfxColorSpace::parse(&obj1, gfx))) { |
| error(-1, "Bad DeviceN color space (alternate color space)"); |
| goto err3; |
| } |
| obj1.free(); |
| arr->get(3, &obj1); |
| if (!(funcA = Function::parse(&obj1))) { |
| goto err4; |
| } |
| obj1.free(); |
| cs = new GfxDeviceNColorSpace(nCompsA, altA, funcA); |
| cs->nonMarking = gTrue; |
| for (i = 0; i < nCompsA; ++i) { |
| cs->names[i] = namesA[i]; |
| if (namesA[i]->cmp("None")) { |
| cs->nonMarking = gFalse; |
| } |
| } |
| return cs; |
| |
| err4: |
| delete altA; |
| err3: |
| for (i = 0; i < nCompsA; ++i) { |
| delete namesA[i]; |
| } |
| err2: |
| obj1.free(); |
| err1: |
| return NULL; |
| } |
| |
| void GfxDeviceNColorSpace::getGray(GfxColor *color, GfxGray *gray) { |
| double x[gfxColorMaxComps], c[gfxColorMaxComps]; |
| GfxColor color2; |
| int i; |
| |
| for (i = 0; i < nComps; ++i) { |
| x[i] = colToDbl(color->c[i]); |
| } |
| func->transform(x, c); |
| for (i = 0; i < alt->getNComps(); ++i) { |
| color2.c[i] = dblToCol(c[i]); |
| } |
| alt->getGray(&color2, gray); |
| } |
| |
| void GfxDeviceNColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { |
| double x[gfxColorMaxComps], c[gfxColorMaxComps]; |
| GfxColor color2; |
| int i; |
| |
| for (i = 0; i < nComps; ++i) { |
| x[i] = colToDbl(color->c[i]); |
| } |
| func->transform(x, c); |
| for (i = 0; i < alt->getNComps(); ++i) { |
| color2.c[i] = dblToCol(c[i]); |
| } |
| alt->getRGB(&color2, rgb); |
| } |
| |
| void GfxDeviceNColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { |
| double x[gfxColorMaxComps], c[gfxColorMaxComps]; |
| GfxColor color2; |
| int i; |
| |
| for (i = 0; i < nComps; ++i) { |
| x[i] = colToDbl(color->c[i]); |
| } |
| func->transform(x, c); |
| for (i = 0; i < alt->getNComps(); ++i) { |
| color2.c[i] = dblToCol(c[i]); |
| } |
| alt->getCMYK(&color2, cmyk); |
| } |
| |
| void GfxDeviceNColorSpace::getDefaultColor(GfxColor *color) { |
| int i; |
| |
| for (i = 0; i < nComps; ++i) { |
| color->c[i] = gfxColorComp1; |
| } |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxPatternColorSpace |
| //------------------------------------------------------------------------ |
| |
| GfxPatternColorSpace::GfxPatternColorSpace(GfxColorSpace *underA) { |
| under = underA; |
| } |
| |
| GfxPatternColorSpace::~GfxPatternColorSpace() { |
| if (under) { |
| delete under; |
| } |
| } |
| |
| GfxColorSpace *GfxPatternColorSpace::copy() { |
| return new GfxPatternColorSpace(under ? under->copy() : |
| (GfxColorSpace *)NULL); |
| } |
| |
| GfxColorSpace *GfxPatternColorSpace::parse(Array *arr, Gfx *gfx) { |
| GfxPatternColorSpace *cs; |
| GfxColorSpace *underA; |
| Object obj1; |
| |
| if (arr->getLength() != 1 && arr->getLength() != 2) { |
| error(-1, "Bad Pattern color space"); |
| return NULL; |
| } |
| underA = NULL; |
| if (arr->getLength() == 2) { |
| arr->get(1, &obj1); |
| if (!(underA = GfxColorSpace::parse(&obj1, gfx))) { |
| error(-1, "Bad Pattern color space (underlying color space)"); |
| obj1.free(); |
| return NULL; |
| } |
| obj1.free(); |
| } |
| cs = new GfxPatternColorSpace(underA); |
| return cs; |
| } |
| |
| void GfxPatternColorSpace::getGray(GfxColor *color, GfxGray *gray) { |
| *gray = 0; |
| } |
| |
| void GfxPatternColorSpace::getRGB(GfxColor *color, GfxRGB *rgb) { |
| rgb->r = rgb->g = rgb->b = 0; |
| } |
| |
| void GfxPatternColorSpace::getCMYK(GfxColor *color, GfxCMYK *cmyk) { |
| cmyk->c = cmyk->m = cmyk->y = 0; |
| cmyk->k = 1; |
| } |
| |
| void GfxPatternColorSpace::getDefaultColor(GfxColor *color) { |
| color->c[0]=0; |
| } |
| |
| //------------------------------------------------------------------------ |
| // Pattern |
| //------------------------------------------------------------------------ |
| |
| GfxPattern::GfxPattern(int typeA) { |
| type = typeA; |
| } |
| |
| GfxPattern::~GfxPattern() { |
| } |
| |
| GfxPattern *GfxPattern::parse(Object *obj, Gfx *gfx) { |
| GfxPattern *pattern; |
| Object obj1; |
| |
| if (obj->isDict()) { |
| obj->dictLookup("PatternType", &obj1); |
| } else if (obj->isStream()) { |
| obj->streamGetDict()->lookup("PatternType", &obj1); |
| } else { |
| return NULL; |
| } |
| pattern = NULL; |
| if (obj1.isInt() && obj1.getInt() == 1) { |
| pattern = GfxTilingPattern::parse(obj); |
| } else if (obj1.isInt() && obj1.getInt() == 2) { |
| pattern = GfxShadingPattern::parse(obj, gfx); |
| } |
| obj1.free(); |
| return pattern; |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxTilingPattern |
| //------------------------------------------------------------------------ |
| |
| GfxTilingPattern *GfxTilingPattern::parse(Object *patObj) { |
| GfxTilingPattern *pat; |
| Dict *dict; |
| int paintTypeA, tilingTypeA; |
| double bboxA[4], matrixA[6]; |
| double xStepA, yStepA; |
| Object resDictA; |
| Object obj1, obj2; |
| int i; |
| |
| if (!patObj->isStream()) { |
| return NULL; |
| } |
| dict = patObj->streamGetDict(); |
| |
| if (dict->lookup("PaintType", &obj1)->isInt()) { |
| paintTypeA = obj1.getInt(); |
| } else { |
| paintTypeA = 1; |
| error(-1, "Invalid or missing PaintType in pattern"); |
| } |
| obj1.free(); |
| if (dict->lookup("TilingType", &obj1)->isInt()) { |
| tilingTypeA = obj1.getInt(); |
| } else { |
| tilingTypeA = 1; |
| error(-1, "Invalid or missing TilingType in pattern"); |
| } |
| obj1.free(); |
| bboxA[0] = bboxA[1] = 0; |
| bboxA[2] = bboxA[3] = 1; |
| if (dict->lookup("BBox", &obj1)->isArray() && |
| obj1.arrayGetLength() == 4) { |
| for (i = 0; i < 4; ++i) { |
| if (obj1.arrayGet(i, &obj2)->isNum()) { |
| bboxA[i] = obj2.getNum(); |
| } |
| obj2.free(); |
| } |
| } else { |
| error(-1, "Invalid or missing BBox in pattern"); |
| } |
| obj1.free(); |
| if (dict->lookup("XStep", &obj1)->isNum()) { |
| xStepA = obj1.getNum(); |
| } else { |
| xStepA = 1; |
| error(-1, "Invalid or missing XStep in pattern"); |
| } |
| obj1.free(); |
| if (dict->lookup("YStep", &obj1)->isNum()) { |
| yStepA = obj1.getNum(); |
| } else { |
| yStepA = 1; |
| error(-1, "Invalid or missing YStep in pattern"); |
| } |
| obj1.free(); |
| if (!dict->lookup("Resources", &resDictA)->isDict()) { |
| resDictA.free(); |
| resDictA.initNull(); |
| error(-1, "Invalid or missing Resources in pattern"); |
| } |
| matrixA[0] = 1; matrixA[1] = 0; |
| matrixA[2] = 0; matrixA[3] = 1; |
| matrixA[4] = 0; matrixA[5] = 0; |
| if (dict->lookup("Matrix", &obj1)->isArray() && |
| obj1.arrayGetLength() == 6) { |
| for (i = 0; i < 6; ++i) { |
| if (obj1.arrayGet(i, &obj2)->isNum()) { |
| matrixA[i] = obj2.getNum(); |
| } |
| obj2.free(); |
| } |
| } |
| obj1.free(); |
| |
| pat = new GfxTilingPattern(paintTypeA, tilingTypeA, bboxA, xStepA, yStepA, |
| &resDictA, matrixA, patObj); |
| resDictA.free(); |
| return pat; |
| } |
| |
| GfxTilingPattern::GfxTilingPattern(int paintTypeA, int tilingTypeA, |
| double *bboxA, double xStepA, double yStepA, |
| Object *resDictA, double *matrixA, |
| Object *contentStreamA): |
| GfxPattern(1) |
| { |
| int i; |
| |
| paintType = paintTypeA; |
| tilingType = tilingTypeA; |
| for (i = 0; i < 4; ++i) { |
| bbox[i] = bboxA[i]; |
| } |
| xStep = xStepA; |
| yStep = yStepA; |
| resDictA->copy(&resDict); |
| for (i = 0; i < 6; ++i) { |
| matrix[i] = matrixA[i]; |
| } |
| contentStreamA->copy(&contentStream); |
| } |
| |
| GfxTilingPattern::~GfxTilingPattern() { |
| resDict.free(); |
| contentStream.free(); |
| } |
| |
| GfxPattern *GfxTilingPattern::copy() { |
| return new GfxTilingPattern(paintType, tilingType, bbox, xStep, yStep, |
| &resDict, matrix, &contentStream); |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxShadingPattern |
| //------------------------------------------------------------------------ |
| |
| GfxShadingPattern *GfxShadingPattern::parse(Object *patObj, Gfx *gfx) { |
| Dict *dict; |
| GfxShading *shadingA; |
| double matrixA[6]; |
| Object obj1, obj2; |
| int i; |
| |
| if (!patObj->isDict()) { |
| return NULL; |
| } |
| dict = patObj->getDict(); |
| |
| dict->lookup("Shading", &obj1); |
| shadingA = GfxShading::parse(&obj1, gfx); |
| obj1.free(); |
| if (!shadingA) { |
| return NULL; |
| } |
| |
| matrixA[0] = 1; matrixA[1] = 0; |
| matrixA[2] = 0; matrixA[3] = 1; |
| matrixA[4] = 0; matrixA[5] = 0; |
| if (dict->lookup("Matrix", &obj1)->isArray() && |
| obj1.arrayGetLength() == 6) { |
| for (i = 0; i < 6; ++i) { |
| if (obj1.arrayGet(i, &obj2)->isNum()) { |
| matrixA[i] = obj2.getNum(); |
| } |
| obj2.free(); |
| } |
| } |
| obj1.free(); |
| |
| return new GfxShadingPattern(shadingA, matrixA); |
| } |
| |
| GfxShadingPattern::GfxShadingPattern(GfxShading *shadingA, double *matrixA): |
| GfxPattern(2) |
| { |
| int i; |
| |
| shading = shadingA; |
| for (i = 0; i < 6; ++i) { |
| matrix[i] = matrixA[i]; |
| } |
| } |
| |
| GfxShadingPattern::~GfxShadingPattern() { |
| delete shading; |
| } |
| |
| GfxPattern *GfxShadingPattern::copy() { |
| return new GfxShadingPattern(shading->copy(), matrix); |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxShading |
| //------------------------------------------------------------------------ |
| |
| GfxShading::GfxShading(int typeA) { |
| type = typeA; |
| colorSpace = NULL; |
| } |
| |
| GfxShading::GfxShading(GfxShading *shading) { |
| int i; |
| |
| type = shading->type; |
| colorSpace = shading->colorSpace->copy(); |
| for (i = 0; i < gfxColorMaxComps; ++i) { |
| background.c[i] = shading->background.c[i]; |
| } |
| hasBackground = shading->hasBackground; |
| xMin = shading->xMin; |
| yMin = shading->yMin; |
| xMax = shading->xMax; |
| yMax = shading->yMax; |
| hasBBox = shading->hasBBox; |
| } |
| |
| GfxShading::~GfxShading() { |
| if (colorSpace) { |
| delete colorSpace; |
| } |
| } |
| |
| GfxShading *GfxShading::parse(Object *obj, Gfx *gfx) { |
| GfxShading *shading; |
| Dict *dict; |
| int typeA; |
| Object obj1; |
| |
| if (obj->isDict()) { |
| dict = obj->getDict(); |
| } else if (obj->isStream()) { |
| dict = obj->streamGetDict(); |
| } else { |
| return NULL; |
| } |
| |
| if (!dict->lookup("ShadingType", &obj1)->isInt()) { |
| error(-1, "Invalid ShadingType in shading dictionary"); |
| obj1.free(); |
| return NULL; |
| } |
| typeA = obj1.getInt(); |
| obj1.free(); |
| |
| switch (typeA) { |
| case 1: |
| shading = GfxFunctionShading::parse(dict, gfx); |
| break; |
| case 2: |
| shading = GfxAxialShading::parse(dict, gfx); |
| break; |
| case 3: |
| shading = GfxRadialShading::parse(dict, gfx); |
| break; |
| case 4: |
| if (obj->isStream()) { |
| shading = GfxGouraudTriangleShading::parse(4, dict, obj->getStream(), gfx); |
| } else { |
| error(-1, "Invalid Type 4 shading object"); |
| goto err1; |
| } |
| break; |
| case 5: |
| if (obj->isStream()) { |
| shading = GfxGouraudTriangleShading::parse(5, dict, obj->getStream(), gfx); |
| } else { |
| error(-1, "Invalid Type 5 shading object"); |
| goto err1; |
| } |
| break; |
| case 6: |
| if (obj->isStream()) { |
| shading = GfxPatchMeshShading::parse(6, dict, obj->getStream(), gfx); |
| } else { |
| error(-1, "Invalid Type 6 shading object"); |
| goto err1; |
| } |
| break; |
| case 7: |
| if (obj->isStream()) { |
| shading = GfxPatchMeshShading::parse(7, dict, obj->getStream(), gfx); |
| } else { |
| error(-1, "Invalid Type 7 shading object"); |
| goto err1; |
| } |
| break; |
| default: |
| error(-1, "Unimplemented shading type %d", typeA); |
| goto err1; |
| } |
| |
| return shading; |
| |
| err1: |
| return NULL; |
| } |
| |
| GBool GfxShading::init(Dict *dict, Gfx *gfx) { |
| Object obj1, obj2; |
| int i; |
| |
| dict->lookup("ColorSpace", &obj1); |
| if (!(colorSpace = GfxColorSpace::parse(&obj1, gfx))) { |
| error(-1, "Bad color space in shading dictionary"); |
| obj1.free(); |
| return gFalse; |
| } |
| obj1.free(); |
| |
| for (i = 0; i < gfxColorMaxComps; ++i) { |
| background.c[i] = 0; |
| } |
| hasBackground = gFalse; |
| if (dict->lookup("Background", &obj1)->isArray()) { |
| if (obj1.arrayGetLength() == colorSpace->getNComps()) { |
| hasBackground = gTrue; |
| for (i = 0; i < colorSpace->getNComps(); ++i) { |
| background.c[i] = dblToCol(obj1.arrayGet(i, &obj2)->getNum()); |
| obj2.free(); |
| } |
| } else { |
| error(-1, "Bad Background in shading dictionary"); |
| } |
| } |
| obj1.free(); |
| |
| xMin = yMin = xMax = yMax = 0; |
| hasBBox = gFalse; |
| if (dict->lookup("BBox", &obj1)->isArray()) { |
| if (obj1.arrayGetLength() == 4) { |
| hasBBox = gTrue; |
| xMin = obj1.arrayGet(0, &obj2)->getNum(); |
| obj2.free(); |
| yMin = obj1.arrayGet(1, &obj2)->getNum(); |
| obj2.free(); |
| xMax = obj1.arrayGet(2, &obj2)->getNum(); |
| obj2.free(); |
| yMax = obj1.arrayGet(3, &obj2)->getNum(); |
| obj2.free(); |
| } else { |
| error(-1, "Bad BBox in shading dictionary"); |
| } |
| } |
| obj1.free(); |
| |
| return gTrue; |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxFunctionShading |
| //------------------------------------------------------------------------ |
| |
| GfxFunctionShading::GfxFunctionShading(double x0A, double y0A, |
| double x1A, double y1A, |
| double *matrixA, |
| Function **funcsA, int nFuncsA): |
| GfxShading(1) |
| { |
| int i; |
| |
| x0 = x0A; |
| y0 = y0A; |
| x1 = x1A; |
| y1 = y1A; |
| for (i = 0; i < 6; ++i) { |
| matrix[i] = matrixA[i]; |
| } |
| nFuncs = nFuncsA; |
| for (i = 0; i < nFuncs; ++i) { |
| funcs[i] = funcsA[i]; |
| } |
| } |
| |
| GfxFunctionShading::GfxFunctionShading(GfxFunctionShading *shading): |
| GfxShading(shading) |
| { |
| int i; |
| |
| x0 = shading->x0; |
| y0 = shading->y0; |
| x1 = shading->x1; |
| y1 = shading->y1; |
| for (i = 0; i < 6; ++i) { |
| matrix[i] = shading->matrix[i]; |
| } |
| nFuncs = shading->nFuncs; |
| for (i = 0; i < nFuncs; ++i) { |
| funcs[i] = shading->funcs[i]->copy(); |
| } |
| } |
| |
| GfxFunctionShading::~GfxFunctionShading() { |
| int i; |
| |
| for (i = 0; i < nFuncs; ++i) { |
| delete funcs[i]; |
| } |
| } |
| |
| GfxFunctionShading *GfxFunctionShading::parse(Dict *dict, Gfx *gfx) { |
| GfxFunctionShading *shading; |
| double x0A, y0A, x1A, y1A; |
| double matrixA[6]; |
| Function *funcsA[gfxColorMaxComps]; |
| int nFuncsA; |
| Object obj1, obj2; |
| int i; |
| |
| x0A = y0A = 0; |
| x1A = y1A = 1; |
| if (dict->lookup("Domain", &obj1)->isArray() && |
| obj1.arrayGetLength() == 4) { |
| x0A = obj1.arrayGet(0, &obj2)->getNum(); |
| obj2.free(); |
| x1A = obj1.arrayGet(1, &obj2)->getNum(); |
| obj2.free(); |
| y0A = obj1.arrayGet(2, &obj2)->getNum(); |
| obj2.free(); |
| y1A = obj1.arrayGet(3, &obj2)->getNum(); |
| obj2.free(); |
| } |
| obj1.free(); |
| |
| matrixA[0] = 1; matrixA[1] = 0; |
| matrixA[2] = 0; matrixA[3] = 1; |
| matrixA[4] = 0; matrixA[5] = 0; |
| if (dict->lookup("Matrix", &obj1)->isArray() && |
| obj1.arrayGetLength() == 6) { |
| matrixA[0] = obj1.arrayGet(0, &obj2)->getNum(); |
| obj2.free(); |
| matrixA[1] = obj1.arrayGet(1, &obj2)->getNum(); |
| obj2.free(); |
| matrixA[2] = obj1.arrayGet(2, &obj2)->getNum(); |
| obj2.free(); |
| matrixA[3] = obj1.arrayGet(3, &obj2)->getNum(); |
| obj2.free(); |
| matrixA[4] = obj1.arrayGet(4, &obj2)->getNum(); |
| obj2.free(); |
| matrixA[5] = obj1.arrayGet(5, &obj2)->getNum(); |
| obj2.free(); |
| } |
| obj1.free(); |
| |
| dict->lookup("Function", &obj1); |
| if (obj1.isArray()) { |
| nFuncsA = obj1.arrayGetLength(); |
| if (nFuncsA > gfxColorMaxComps) { |
| error(-1, "Invalid Function array in shading dictionary"); |
| goto err1; |
| } |
| for (i = 0; i < nFuncsA; ++i) { |
| obj1.arrayGet(i, &obj2); |
| if (!(funcsA[i] = Function::parse(&obj2))) { |
| goto err2; |
| } |
| obj2.free(); |
| } |
| } else { |
| nFuncsA = 1; |
| if (!(funcsA[0] = Function::parse(&obj1))) { |
| goto err1; |
| } |
| } |
| obj1.free(); |
| |
| shading = new GfxFunctionShading(x0A, y0A, x1A, y1A, matrixA, |
| funcsA, nFuncsA); |
| if (!shading->init(dict, gfx)) { |
| delete shading; |
| return NULL; |
| } |
| return shading; |
| |
| err2: |
| obj2.free(); |
| err1: |
| obj1.free(); |
| return NULL; |
| } |
| |
| GfxShading *GfxFunctionShading::copy() { |
| return new GfxFunctionShading(this); |
| } |
| |
| void GfxFunctionShading::getColor(double x, double y, GfxColor *color) { |
| double in[2], out[gfxColorMaxComps]; |
| int i; |
| |
| // NB: there can be one function with n outputs or n functions with |
| // one output each (where n = number of color components) |
| for (i = 0; i < gfxColorMaxComps; ++i) { |
| out[i] = 0; |
| } |
| in[0] = x; |
| in[1] = y; |
| for (i = 0; i < nFuncs; ++i) { |
| funcs[i]->transform(in, &out[i]); |
| } |
| for (i = 0; i < gfxColorMaxComps; ++i) { |
| color->c[i] = dblToCol(out[i]); |
| } |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxAxialShading |
| //------------------------------------------------------------------------ |
| |
| GfxAxialShading::GfxAxialShading(double x0A, double y0A, |
| double x1A, double y1A, |
| double t0A, double t1A, |
| Function **funcsA, int nFuncsA, |
| GBool extend0A, GBool extend1A): |
| GfxShading(2) |
| { |
| int i; |
| |
| x0 = x0A; |
| y0 = y0A; |
| x1 = x1A; |
| y1 = y1A; |
| t0 = t0A; |
| t1 = t1A; |
| nFuncs = nFuncsA; |
| for (i = 0; i < nFuncs; ++i) { |
| funcs[i] = funcsA[i]; |
| } |
| extend0 = extend0A; |
| extend1 = extend1A; |
| } |
| |
| GfxAxialShading::GfxAxialShading(GfxAxialShading *shading): |
| GfxShading(shading) |
| { |
| int i; |
| |
| x0 = shading->x0; |
| y0 = shading->y0; |
| x1 = shading->x1; |
| y1 = shading->y1; |
| t0 = shading->t0; |
| t1 = shading->t1; |
| nFuncs = shading->nFuncs; |
| for (i = 0; i < nFuncs; ++i) { |
| funcs[i] = shading->funcs[i]->copy(); |
| } |
| extend0 = shading->extend0; |
| extend1 = shading->extend1; |
| } |
| |
| GfxAxialShading::~GfxAxialShading() { |
| int i; |
| |
| for (i = 0; i < nFuncs; ++i) { |
| delete funcs[i]; |
| } |
| } |
| |
| GfxAxialShading *GfxAxialShading::parse(Dict *dict, Gfx *gfx) { |
| GfxAxialShading *shading; |
| double x0A, y0A, x1A, y1A; |
| double t0A, t1A; |
| Function *funcsA[gfxColorMaxComps]; |
| int nFuncsA; |
| GBool extend0A, extend1A; |
| Object obj1, obj2; |
| int i; |
| |
| x0A = y0A = x1A = y1A = 0; |
| if (dict->lookup("Coords", &obj1)->isArray() && |
| obj1.arrayGetLength() == 4) { |
| x0A = obj1.arrayGet(0, &obj2)->getNum(); |
| obj2.free(); |
| y0A = obj1.arrayGet(1, &obj2)->getNum(); |
| obj2.free(); |
| x1A = obj1.arrayGet(2, &obj2)->getNum(); |
| obj2.free(); |
| y1A = obj1.arrayGet(3, &obj2)->getNum(); |
| obj2.free(); |
| } else { |
| error(-1, "Missing or invalid Coords in shading dictionary"); |
| goto err1; |
| } |
| obj1.free(); |
| |
| t0A = 0; |
| t1A = 1; |
| if (dict->lookup("Domain", &obj1)->isArray() && |
| obj1.arrayGetLength() == 2) { |
| t0A = obj1.arrayGet(0, &obj2)->getNum(); |
| obj2.free(); |
| t1A = obj1.arrayGet(1, &obj2)->getNum(); |
| obj2.free(); |
| } |
| obj1.free(); |
| |
| dict->lookup("Function", &obj1); |
| if (obj1.isArray()) { |
| nFuncsA = obj1.arrayGetLength(); |
| if (nFuncsA > gfxColorMaxComps) { |
| error(-1, "Invalid Function array in shading dictionary"); |
| goto err1; |
| } |
| for (i = 0; i < nFuncsA; ++i) { |
| obj1.arrayGet(i, &obj2); |
| if (!(funcsA[i] = Function::parse(&obj2))) { |
| obj1.free(); |
| obj2.free(); |
| goto err1; |
| } |
| obj2.free(); |
| } |
| } else { |
| nFuncsA = 1; |
| if (!(funcsA[0] = Function::parse(&obj1))) { |
| obj1.free(); |
| goto err1; |
| } |
| } |
| obj1.free(); |
| |
| extend0A = extend1A = gFalse; |
| if (dict->lookup("Extend", &obj1)->isArray() && |
| obj1.arrayGetLength() == 2) { |
| extend0A = obj1.arrayGet(0, &obj2)->getBool(); |
| obj2.free(); |
| extend1A = obj1.arrayGet(1, &obj2)->getBool(); |
| obj2.free(); |
| } |
| obj1.free(); |
| |
| shading = new GfxAxialShading(x0A, y0A, x1A, y1A, t0A, t1A, |
| funcsA, nFuncsA, extend0A, extend1A); |
| if (!shading->init(dict, gfx)) { |
| delete shading; |
| return NULL; |
| } |
| return shading; |
| |
| err1: |
| return NULL; |
| } |
| |
| GfxShading *GfxAxialShading::copy() { |
| return new GfxAxialShading(this); |
| } |
| |
| void GfxAxialShading::getColor(double t, GfxColor *color) { |
| double out[gfxColorMaxComps]; |
| int i; |
| |
| // NB: there can be one function with n outputs or n functions with |
| // one output each (where n = number of color components) |
| for (i = 0; i < gfxColorMaxComps; ++i) { |
| out[i] = 0; |
| } |
| for (i = 0; i < nFuncs; ++i) { |
| funcs[i]->transform(&t, &out[i]); |
| } |
| for (i = 0; i < gfxColorMaxComps; ++i) { |
| color->c[i] = dblToCol(out[i]); |
| } |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxRadialShading |
| //------------------------------------------------------------------------ |
| |
| GfxRadialShading::GfxRadialShading(double x0A, double y0A, double r0A, |
| double x1A, double y1A, double r1A, |
| double t0A, double t1A, |
| Function **funcsA, int nFuncsA, |
| GBool extend0A, GBool extend1A): |
| GfxShading(3) |
| { |
| int i; |
| |
| x0 = x0A; |
| y0 = y0A; |
| r0 = r0A; |
| x1 = x1A; |
| y1 = y1A; |
| r1 = r1A; |
| t0 = t0A; |
| t1 = t1A; |
| nFuncs = nFuncsA; |
| for (i = 0; i < nFuncs; ++i) { |
| funcs[i] = funcsA[i]; |
| } |
| extend0 = extend0A; |
| extend1 = extend1A; |
| } |
| |
| GfxRadialShading::GfxRadialShading(GfxRadialShading *shading): |
| GfxShading(shading) |
| { |
| int i; |
| |
| x0 = shading->x0; |
| y0 = shading->y0; |
| r0 = shading->r0; |
| x1 = shading->x1; |
| y1 = shading->y1; |
| r1 = shading->r1; |
| t0 = shading->t0; |
| t1 = shading->t1; |
| nFuncs = shading->nFuncs; |
| for (i = 0; i < nFuncs; ++i) { |
| funcs[i] = shading->funcs[i]->copy(); |
| } |
| extend0 = shading->extend0; |
| extend1 = shading->extend1; |
| } |
| |
| GfxRadialShading::~GfxRadialShading() { |
| int i; |
| |
| for (i = 0; i < nFuncs; ++i) { |
| delete funcs[i]; |
| } |
| } |
| |
| GfxRadialShading *GfxRadialShading::parse(Dict *dict, Gfx *gfx) { |
| GfxRadialShading *shading; |
| double x0A, y0A, r0A, x1A, y1A, r1A; |
| double t0A, t1A; |
| Function *funcsA[gfxColorMaxComps]; |
| int nFuncsA; |
| GBool extend0A, extend1A; |
| Object obj1, obj2; |
| int i; |
| |
| x0A = y0A = r0A = x1A = y1A = r1A = 0; |
| if (dict->lookup("Coords", &obj1)->isArray() && |
| obj1.arrayGetLength() == 6) { |
| x0A = obj1.arrayGet(0, &obj2)->getNum(); |
| obj2.free(); |
| y0A = obj1.arrayGet(1, &obj2)->getNum(); |
| obj2.free(); |
| r0A = obj1.arrayGet(2, &obj2)->getNum(); |
| obj2.free(); |
| x1A = obj1.arrayGet(3, &obj2)->getNum(); |
| obj2.free(); |
| y1A = obj1.arrayGet(4, &obj2)->getNum(); |
| obj2.free(); |
| r1A = obj1.arrayGet(5, &obj2)->getNum(); |
| obj2.free(); |
| } else { |
| error(-1, "Missing or invalid Coords in shading dictionary"); |
| goto err1; |
| } |
| obj1.free(); |
| |
| t0A = 0; |
| t1A = 1; |
| if (dict->lookup("Domain", &obj1)->isArray() && |
| obj1.arrayGetLength() == 2) { |
| t0A = obj1.arrayGet(0, &obj2)->getNum(); |
| obj2.free(); |
| t1A = obj1.arrayGet(1, &obj2)->getNum(); |
| obj2.free(); |
| } |
| obj1.free(); |
| |
| dict->lookup("Function", &obj1); |
| if (obj1.isArray()) { |
| nFuncsA = obj1.arrayGetLength(); |
| if (nFuncsA > gfxColorMaxComps) { |
| error(-1, "Invalid Function array in shading dictionary"); |
| goto err1; |
| } |
| for (i = 0; i < nFuncsA; ++i) { |
| obj1.arrayGet(i, &obj2); |
| if (!(funcsA[i] = Function::parse(&obj2))) { |
| obj1.free(); |
| obj2.free(); |
| goto err1; |
| } |
| obj2.free(); |
| } |
| } else { |
| nFuncsA = 1; |
| if (!(funcsA[0] = Function::parse(&obj1))) { |
| obj1.free(); |
| goto err1; |
| } |
| } |
| obj1.free(); |
| |
| extend0A = extend1A = gFalse; |
| if (dict->lookup("Extend", &obj1)->isArray() && |
| obj1.arrayGetLength() == 2) { |
| extend0A = obj1.arrayGet(0, &obj2)->getBool(); |
| obj2.free(); |
| extend1A = obj1.arrayGet(1, &obj2)->getBool(); |
| obj2.free(); |
| } |
| obj1.free(); |
| |
| shading = new GfxRadialShading(x0A, y0A, r0A, x1A, y1A, r1A, t0A, t1A, |
| funcsA, nFuncsA, extend0A, extend1A); |
| if (!shading->init(dict, gfx)) { |
| delete shading; |
| return NULL; |
| } |
| return shading; |
| |
| err1: |
| return NULL; |
| } |
| |
| GfxShading *GfxRadialShading::copy() { |
| return new GfxRadialShading(this); |
| } |
| |
| void GfxRadialShading::getColor(double t, GfxColor *color) { |
| double out[gfxColorMaxComps]; |
| int i; |
| |
| // NB: there can be one function with n outputs or n functions with |
| // one output each (where n = number of color components) |
| for (i = 0; i < gfxColorMaxComps; ++i) { |
| out[i] = 0; |
| } |
| for (i = 0; i < nFuncs; ++i) { |
| funcs[i]->transform(&t, &out[i]); |
| } |
| for (i = 0; i < gfxColorMaxComps; ++i) { |
| color->c[i] = dblToCol(out[i]); |
| } |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxShadingBitBuf |
| //------------------------------------------------------------------------ |
| |
| class GfxShadingBitBuf { |
| public: |
| |
| GfxShadingBitBuf(Stream *strA); |
| ~GfxShadingBitBuf(); |
| GBool getBits(int n, Guint *val); |
| void flushBits(); |
| |
| private: |
| |
| Stream *str; |
| int bitBuf; |
| int nBits; |
| }; |
| |
| GfxShadingBitBuf::GfxShadingBitBuf(Stream *strA) { |
| str = strA; |
| str->reset(); |
| bitBuf = 0; |
| nBits = 0; |
| } |
| |
| GfxShadingBitBuf::~GfxShadingBitBuf() { |
| str->close(); |
| } |
| |
| GBool GfxShadingBitBuf::getBits(int n, Guint *val) { |
| int x; |
| |
| if (nBits >= n) { |
| x = (bitBuf >> (nBits - n)) & ((1 << n) - 1); |
| nBits -= n; |
| } else { |
| x = 0; |
| if (nBits > 0) { |
| x = bitBuf & ((1 << nBits) - 1); |
| n -= nBits; |
| nBits = 0; |
| } |
| while (n > 0) { |
| if ((bitBuf = str->getChar()) == EOF) { |
| nBits = 0; |
| return gFalse; |
| } |
| if (n >= 8) { |
| x = (x << 8) | bitBuf; |
| n -= 8; |
| } else { |
| x = (x << n) | (bitBuf >> (8 - n)); |
| nBits = 8 - n; |
| n = 0; |
| } |
| } |
| } |
| *val = x; |
| return gTrue; |
| } |
| |
| void GfxShadingBitBuf::flushBits() { |
| bitBuf = 0; |
| nBits = 0; |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxGouraudTriangleShading |
| //------------------------------------------------------------------------ |
| |
| GfxGouraudTriangleShading::GfxGouraudTriangleShading( |
| int typeA, |
| GfxGouraudVertex *verticesA, int nVerticesA, |
| int (*trianglesA)[3], int nTrianglesA, |
| Function **funcsA, int nFuncsA): |
| GfxShading(typeA) |
| { |
| int i; |
| |
| vertices = verticesA; |
| nVertices = nVerticesA; |
| triangles = trianglesA; |
| nTriangles = nTrianglesA; |
| nFuncs = nFuncsA; |
| for (i = 0; i < nFuncs; ++i) { |
| funcs[i] = funcsA[i]; |
| } |
| } |
| |
| GfxGouraudTriangleShading::GfxGouraudTriangleShading( |
| GfxGouraudTriangleShading *shading): |
| GfxShading(shading) |
| { |
| int i; |
| |
| nVertices = shading->nVertices; |
| vertices = (GfxGouraudVertex *)gmallocn(nVertices, sizeof(GfxGouraudVertex)); |
| memcpy(vertices, shading->vertices, nVertices * sizeof(GfxGouraudVertex)); |
| nTriangles = shading->nTriangles; |
| triangles = (int (*)[3])gmallocn(nTriangles * 3, sizeof(int)); |
| memcpy(triangles, shading->triangles, nTriangles * 3 * sizeof(int)); |
| nFuncs = shading->nFuncs; |
| for (i = 0; i < nFuncs; ++i) { |
| funcs[i] = shading->funcs[i]->copy(); |
| } |
| } |
| |
| GfxGouraudTriangleShading::~GfxGouraudTriangleShading() { |
| int i; |
| |
| gfree(vertices); |
| gfree(triangles); |
| for (i = 0; i < nFuncs; ++i) { |
| delete funcs[i]; |
| } |
| } |
| |
| GfxGouraudTriangleShading *GfxGouraudTriangleShading::parse(int typeA, |
| Dict *dict, |
| Stream *str, |
| Gfx *gfx) { |
| GfxGouraudTriangleShading *shading; |
| Function *funcsA[gfxColorMaxComps]; |
| int nFuncsA; |
| int coordBits, compBits, flagBits, vertsPerRow, nRows; |
| double xMin, xMax, yMin, yMax; |
| double cMin[gfxColorMaxComps], cMax[gfxColorMaxComps]; |
| double xMul, yMul; |
| double cMul[gfxColorMaxComps]; |
| GfxGouraudVertex *verticesA; |
| int (*trianglesA)[3]; |
| int nComps, nVerticesA, nTrianglesA, vertSize, triSize; |
| Guint x, y, flag; |
| Guint c[gfxColorMaxComps]; |
| GfxShadingBitBuf *bitBuf; |
| Object obj1, obj2; |
| int i, j, k, state; |
| |
| if (dict->lookup("BitsPerCoordinate", &obj1)->isInt()) { |
| coordBits = obj1.getInt(); |
| } else { |
| error(-1, "Missing or invalid BitsPerCoordinate in shading dictionary"); |
| goto err2; |
| } |
| obj1.free(); |
| if (dict->lookup("BitsPerComponent", &obj1)->isInt()) { |
| compBits = obj1.getInt(); |
| } else { |
| error(-1, "Missing or invalid BitsPerComponent in shading dictionary"); |
| goto err2; |
| } |
| obj1.free(); |
| flagBits = vertsPerRow = 0; // make gcc happy |
| if (typeA == 4) { |
| if (dict->lookup("BitsPerFlag", &obj1)->isInt()) { |
| flagBits = obj1.getInt(); |
| } else { |
| error(-1, "Missing or invalid BitsPerFlag in shading dictionary"); |
| goto err2; |
| } |
| obj1.free(); |
| } else { |
| if (dict->lookup("VerticesPerRow", &obj1)->isInt()) { |
| vertsPerRow = obj1.getInt(); |
| } else { |
| error(-1, "Missing or invalid VerticesPerRow in shading dictionary"); |
| goto err2; |
| } |
| obj1.free(); |
| } |
| if (dict->lookup("Decode", &obj1)->isArray() && |
| obj1.arrayGetLength() >= 6) { |
| xMin = obj1.arrayGet(0, &obj2)->getNum(); |
| obj2.free(); |
| xMax = obj1.arrayGet(1, &obj2)->getNum(); |
| obj2.free(); |
| xMul = (xMax - xMin) / (pow(2.0, coordBits) - 1); |
| yMin = obj1.arrayGet(2, &obj2)->getNum(); |
| obj2.free(); |
| yMax = obj1.arrayGet(3, &obj2)->getNum(); |
| obj2.free(); |
| yMul = (yMax - yMin) / (pow(2.0, coordBits) - 1); |
| for (i = 0; 5 + 2*i < obj1.arrayGetLength() && i < gfxColorMaxComps; ++i) { |
| cMin[i] = obj1.arrayGet(4 + 2*i, &obj2)->getNum(); |
| obj2.free(); |
| cMax[i] = obj1.arrayGet(5 + 2*i, &obj2)->getNum(); |
| obj2.free(); |
| cMul[i] = (cMax[i] - cMin[i]) / (double)((1 << compBits) - 1); |
| } |
| nComps = i; |
| } else { |
| error(-1, "Missing or invalid Decode array in shading dictionary"); |
| goto err2; |
| } |
| obj1.free(); |
| |
| if (!dict->lookup("Function", &obj1)->isNull()) { |
| if (obj1.isArray()) { |
| nFuncsA = obj1.arrayGetLength(); |
| if (nFuncsA > gfxColorMaxComps) { |
| error(-1, "Invalid Function array in shading dictionary"); |
| goto err1; |
| } |
| for (i = 0; i < nFuncsA; ++i) { |
| obj1.arrayGet(i, &obj2); |
| if (!(funcsA[i] = Function::parse(&obj2))) { |
| obj1.free(); |
| obj2.free(); |
| goto err1; |
| } |
| obj2.free(); |
| } |
| } else { |
| nFuncsA = 1; |
| if (!(funcsA[0] = Function::parse(&obj1))) { |
| obj1.free(); |
| goto err1; |
| } |
| } |
| } else { |
| nFuncsA = 0; |
| } |
| obj1.free(); |
| |
| nVerticesA = nTrianglesA = 0; |
| verticesA = NULL; |
| trianglesA = NULL; |
| vertSize = triSize = 0; |
| state = 0; |
| flag = 0; // make gcc happy |
| bitBuf = new GfxShadingBitBuf(str); |
| while (1) { |
| if (typeA == 4) { |
| if (!bitBuf->getBits(flagBits, &flag)) { |
| break; |
| } |
| } |
| if (!bitBuf->getBits(coordBits, &x) || |
| !bitBuf->getBits(coordBits, &y)) { |
| break; |
| } |
| for (i = 0; i < nComps; ++i) { |
| if (!bitBuf->getBits(compBits, &c[i])) { |
| break; |
| } |
| } |
| if (i < nComps) { |
| break; |
| } |
| if (nVerticesA == vertSize) { |
| int oldVertSize = vertSize; |
| vertSize = (vertSize == 0) ? 16 : 2 * vertSize; |
| verticesA = (GfxGouraudVertex *) |
| greallocn(verticesA, vertSize, sizeof(GfxGouraudVertex)); |
| memset(verticesA + oldVertSize, 0, (vertSize - oldVertSize) * sizeof(GfxGouraudVertex)); |
| } |
| verticesA[nVerticesA].x = xMin + xMul * (double)x; |
| verticesA[nVerticesA].y = yMin + yMul * (double)y; |
| for (i = 0; i < nComps; ++i) { |
| verticesA[nVerticesA].color.c[i] = |
| dblToCol(cMin[i] + cMul[i] * (double)c[i]); |
| } |
| ++nVerticesA; |
| bitBuf->flushBits(); |
| if (typeA == 4) { |
| if (state == 0 || state == 1) { |
| ++state; |
| } else if (state == 2 || flag > 0) { |
| if (nTrianglesA == triSize) { |
| triSize = (triSize == 0) ? 16 : 2 * triSize; |
| trianglesA = (int (*)[3]) |
| greallocn(trianglesA, triSize * 3, sizeof(int)); |
| } |
| if (state == 2) { |
| trianglesA[nTrianglesA][0] = nVerticesA - 3; |
| trianglesA[nTrianglesA][1] = nVerticesA - 2; |
| trianglesA[nTrianglesA][2] = nVerticesA - 1; |
| ++state; |
| } else if (flag == 1) { |
| trianglesA[nTrianglesA][0] = trianglesA[nTrianglesA - 1][1]; |
| trianglesA[nTrianglesA][1] = trianglesA[nTrianglesA - 1][2]; |
| trianglesA[nTrianglesA][2] = nVerticesA - 1; |
| } else { // flag == 2 |
| trianglesA[nTrianglesA][0] = trianglesA[nTrianglesA - 1][0]; |
| trianglesA[nTrianglesA][1] = trianglesA[nTrianglesA - 1][2]; |
| trianglesA[nTrianglesA][2] = nVerticesA - 1; |
| } |
| ++nTrianglesA; |
| } else { // state == 3 && flag == 0 |
| state = 1; |
| } |
| } |
| } |
| delete bitBuf; |
| if (typeA == 5) { |
| nRows = nVerticesA / vertsPerRow; |
| nTrianglesA = (nRows - 1) * 2 * (vertsPerRow - 1); |
| trianglesA = (int (*)[3])gmallocn(nTrianglesA * 3, sizeof(int)); |
| k = 0; |
| for (i = 0; i < nRows - 1; ++i) { |
| for (j = 0; j < vertsPerRow - 1; ++j) { |
| trianglesA[k][0] = i * vertsPerRow + j; |
| trianglesA[k][1] = i * vertsPerRow + j+1; |
| trianglesA[k][2] = (i+1) * vertsPerRow + j; |
| ++k; |
| trianglesA[k][0] = i * vertsPerRow + j+1; |
| trianglesA[k][1] = (i+1) * vertsPerRow + j; |
| trianglesA[k][2] = (i+1) * vertsPerRow + j+1; |
| ++k; |
| } |
| } |
| } |
| |
| shading = new GfxGouraudTriangleShading(typeA, verticesA, nVerticesA, |
| trianglesA, nTrianglesA, |
| funcsA, nFuncsA); |
| if (!shading->init(dict, gfx)) { |
| delete shading; |
| return NULL; |
| } |
| return shading; |
| |
| err2: |
| obj1.free(); |
| err1: |
| return NULL; |
| } |
| |
| GfxShading *GfxGouraudTriangleShading::copy() { |
| return new GfxGouraudTriangleShading(this); |
| } |
| |
| void GfxGouraudTriangleShading::getTriangle( |
| int i, |
| double *x0, double *y0, GfxColor *color0, |
| double *x1, double *y1, GfxColor *color1, |
| double *x2, double *y2, GfxColor *color2) { |
| double in; |
| double out[gfxColorMaxComps]; |
| int v, j; |
| |
| v = triangles[i][0]; |
| *x0 = vertices[v].x; |
| *y0 = vertices[v].y; |
| if (nFuncs > 0) { |
| in = colToDbl(vertices[v].color.c[0]); |
| for (j = 0; j < nFuncs; ++j) { |
| funcs[j]->transform(&in, &out[j]); |
| } |
| for (j = 0; j < gfxColorMaxComps; ++j) { |
| color0->c[j] = dblToCol(out[j]); |
| } |
| } else { |
| *color0 = vertices[v].color; |
| } |
| v = triangles[i][1]; |
| *x1 = vertices[v].x; |
| *y1 = vertices[v].y; |
| if (nFuncs > 0) { |
| in = colToDbl(vertices[v].color.c[0]); |
| for (j = 0; j < nFuncs; ++j) { |
| funcs[j]->transform(&in, &out[j]); |
| } |
| for (j = 0; j < gfxColorMaxComps; ++j) { |
| color1->c[j] = dblToCol(out[j]); |
| } |
| } else { |
| *color1 = vertices[v].color; |
| } |
| v = triangles[i][2]; |
| *x2 = vertices[v].x; |
| *y2 = vertices[v].y; |
| if (nFuncs > 0) { |
| in = colToDbl(vertices[v].color.c[0]); |
| for (j = 0; j < nFuncs; ++j) { |
| funcs[j]->transform(&in, &out[j]); |
| } |
| for (j = 0; j < gfxColorMaxComps; ++j) { |
| color2->c[j] = dblToCol(out[j]); |
| } |
| } else { |
| *color2 = vertices[v].color; |
| } |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxPatchMeshShading |
| //------------------------------------------------------------------------ |
| |
| GfxPatchMeshShading::GfxPatchMeshShading(int typeA, |
| GfxPatch *patchesA, int nPatchesA, |
| Function **funcsA, int nFuncsA): |
| GfxShading(typeA) |
| { |
| int i; |
| |
| patches = patchesA; |
| nPatches = nPatchesA; |
| nFuncs = nFuncsA; |
| for (i = 0; i < nFuncs; ++i) { |
| funcs[i] = funcsA[i]; |
| } |
| } |
| |
| GfxPatchMeshShading::GfxPatchMeshShading(GfxPatchMeshShading *shading): |
| GfxShading(shading) |
| { |
| int i; |
| |
| nPatches = shading->nPatches; |
| patches = (GfxPatch *)gmallocn(nPatches, sizeof(GfxPatch)); |
| memcpy(patches, shading->patches, nPatches * sizeof(GfxPatch)); |
| nFuncs = shading->nFuncs; |
| for (i = 0; i < nFuncs; ++i) { |
| funcs[i] = shading->funcs[i]->copy(); |
| } |
| } |
| |
| GfxPatchMeshShading::~GfxPatchMeshShading() { |
| int i; |
| |
| gfree(patches); |
| for (i = 0; i < nFuncs; ++i) { |
| delete funcs[i]; |
| } |
| } |
| |
| GfxPatchMeshShading *GfxPatchMeshShading::parse(int typeA, Dict *dict, |
| Stream *str, Gfx *gfx) { |
| GfxPatchMeshShading *shading; |
| Function *funcsA[gfxColorMaxComps]; |
| int nFuncsA; |
| int coordBits, compBits, flagBits; |
| double xMin, xMax, yMin, yMax; |
| double cMin[gfxColorMaxComps], cMax[gfxColorMaxComps]; |
| double xMul, yMul; |
| double cMul[gfxColorMaxComps]; |
| GfxPatch *patchesA, *p; |
| int nComps, nPatchesA, patchesSize, nPts, nColors; |
| Guint flag; |
| double x[16], y[16]; |
| Guint xi, yi; |
| GfxColorComp c[4][gfxColorMaxComps]; |
| Guint ci[4]; |
| GfxShadingBitBuf *bitBuf; |
| Object obj1, obj2; |
| int i, j; |
| |
| if (dict->lookup("BitsPerCoordinate", &obj1)->isInt()) { |
| coordBits = obj1.getInt(); |
| } else { |
| error(-1, "Missing or invalid BitsPerCoordinate in shading dictionary"); |
| goto err2; |
| } |
| obj1.free(); |
| if (dict->lookup("BitsPerComponent", &obj1)->isInt()) { |
| compBits = obj1.getInt(); |
| } else { |
| error(-1, "Missing or invalid BitsPerComponent in shading dictionary"); |
| goto err2; |
| } |
| obj1.free(); |
| if (dict->lookup("BitsPerFlag", &obj1)->isInt()) { |
| flagBits = obj1.getInt(); |
| } else { |
| error(-1, "Missing or invalid BitsPerFlag in shading dictionary"); |
| goto err2; |
| } |
| obj1.free(); |
| if (dict->lookup("Decode", &obj1)->isArray() && |
| obj1.arrayGetLength() >= 6) { |
| xMin = obj1.arrayGet(0, &obj2)->getNum(); |
| obj2.free(); |
| xMax = obj1.arrayGet(1, &obj2)->getNum(); |
| obj2.free(); |
| xMul = (xMax - xMin) / (pow(2.0, coordBits) - 1); |
| yMin = obj1.arrayGet(2, &obj2)->getNum(); |
| obj2.free(); |
| yMax = obj1.arrayGet(3, &obj2)->getNum(); |
| obj2.free(); |
| yMul = (yMax - yMin) / (pow(2.0, coordBits) - 1); |
| for (i = 0; 5 + 2*i < obj1.arrayGetLength() && i < gfxColorMaxComps; ++i) { |
| cMin[i] = obj1.arrayGet(4 + 2*i, &obj2)->getNum(); |
| obj2.free(); |
| cMax[i] = obj1.arrayGet(5 + 2*i, &obj2)->getNum(); |
| obj2.free(); |
| cMul[i] = (cMax[i] - cMin[i]) / (double)((1 << compBits) - 1); |
| } |
| nComps = i; |
| } else { |
| error(-1, "Missing or invalid Decode array in shading dictionary"); |
| goto err2; |
| } |
| obj1.free(); |
| |
| if (!dict->lookup("Function", &obj1)->isNull()) { |
| if (obj1.isArray()) { |
| nFuncsA = obj1.arrayGetLength(); |
| if (nFuncsA > gfxColorMaxComps) { |
| error(-1, "Invalid Function array in shading dictionary"); |
| goto err1; |
| } |
| for (i = 0; i < nFuncsA; ++i) { |
| obj1.arrayGet(i, &obj2); |
| if (!(funcsA[i] = Function::parse(&obj2))) { |
| obj1.free(); |
| obj2.free(); |
| goto err1; |
| } |
| obj2.free(); |
| } |
| } else { |
| nFuncsA = 1; |
| if (!(funcsA[0] = Function::parse(&obj1))) { |
| obj1.free(); |
| goto err1; |
| } |
| } |
| } else { |
| nFuncsA = 0; |
| } |
| obj1.free(); |
| |
| nPatchesA = 0; |
| patchesA = NULL; |
| patchesSize = 0; |
| bitBuf = new GfxShadingBitBuf(str); |
| while (1) { |
| if (!bitBuf->getBits(flagBits, &flag)) { |
| break; |
| } |
| if (typeA == 6) { |
| switch (flag) { |
| case 0: nPts = 12; nColors = 4; break; |
| case 1: |
| case 2: |
| case 3: |
| default: nPts = 8; nColors = 2; break; |
| } |
| } else { |
| switch (flag) { |
| case 0: nPts = 16; nColors = 4; break; |
| case 1: |
| case 2: |
| case 3: |
| default: nPts = 12; nColors = 2; break; |
| } |
| } |
| for (i = 0; i < nPts; ++i) { |
| if (!bitBuf->getBits(coordBits, &xi) || |
| !bitBuf->getBits(coordBits, &yi)) { |
| break; |
| } |
| x[i] = xMin + xMul * (double)xi; |
| y[i] = yMin + yMul * (double)yi; |
| } |
| if (i < nPts) { |
| break; |
| } |
| for (i = 0; i < nColors; ++i) { |
| for (j = 0; j < nComps; ++j) { |
| if (!bitBuf->getBits(compBits, &ci[j])) { |
| break; |
| } |
| c[i][j] = dblToCol(cMin[j] + cMul[j] * (double)ci[j]); |
| } |
| if (j < nComps) { |
| break; |
| } |
| } |
| if (i < nColors) { |
| break; |
| } |
| if (nPatchesA == patchesSize) { |
| int oldPatchesSize = patchesSize; |
| patchesSize = (patchesSize == 0) ? 16 : 2 * patchesSize; |
| patchesA = (GfxPatch *)greallocn(patchesA, |
| patchesSize, sizeof(GfxPatch)); |
| memset(patchesA + oldPatchesSize, 0, (patchesSize - oldPatchesSize) * sizeof(GfxPatch)); |
| } |
| p = &patchesA[nPatchesA]; |
| if (typeA == 6) { |
| switch (flag) { |
| case 0: |
| p->x[0][0] = x[0]; |
| p->y[0][0] = y[0]; |
| p->x[0][1] = x[1]; |
| p->y[0][1] = y[1]; |
| p->x[0][2] = x[2]; |
| p->y[0][2] = y[2]; |
| p->x[0][3] = x[3]; |
| p->y[0][3] = y[3]; |
| p->x[1][3] = x[4]; |
| p->y[1][3] = y[4]; |
| p->x[2][3] = x[5]; |
| p->y[2][3] = y[5]; |
| p->x[3][3] = x[6]; |
| p->y[3][3] = y[6]; |
| p->x[3][2] = x[7]; |
| p->y[3][2] = y[7]; |
| p->x[3][1] = x[8]; |
| p->y[3][1] = y[8]; |
| p->x[3][0] = x[9]; |
| p->y[3][0] = y[9]; |
| p->x[2][0] = x[10]; |
| p->y[2][0] = y[10]; |
| p->x[1][0] = x[11]; |
| p->y[1][0] = y[11]; |
| for (j = 0; j < nComps; ++j) { |
| p->color[0][0].c[j] = c[0][j]; |
| p->color[0][1].c[j] = c[1][j]; |
| p->color[1][1].c[j] = c[2][j]; |
| p->color[1][0].c[j] = c[3][j]; |
| } |
| break; |
| case 1: |
| p->x[0][0] = patchesA[nPatchesA-1].x[0][3]; |
| p->y[0][0] = patchesA[nPatchesA-1].y[0][3]; |
| p->x[0][1] = patchesA[nPatchesA-1].x[1][3]; |
| p->y[0][1] = patchesA[nPatchesA-1].y[1][3]; |
| p->x[0][2] = patchesA[nPatchesA-1].x[2][3]; |
| p->y[0][2] = patchesA[nPatchesA-1].y[2][3]; |
| p->x[0][3] = patchesA[nPatchesA-1].x[3][3]; |
| p->y[0][3] = patchesA[nPatchesA-1].y[3][3]; |
| p->x[1][3] = x[0]; |
| p->y[1][3] = y[0]; |
| p->x[2][3] = x[1]; |
| p->y[2][3] = y[1]; |
| p->x[3][3] = x[2]; |
| p->y[3][3] = y[2]; |
| p->x[3][2] = x[3]; |
| p->y[3][2] = y[3]; |
| p->x[3][1] = x[4]; |
| p->y[3][1] = y[4]; |
| p->x[3][0] = x[5]; |
| p->y[3][0] = y[5]; |
| p->x[2][0] = x[6]; |
| p->y[2][0] = y[6]; |
| p->x[1][0] = x[7]; |
| p->y[1][0] = y[7]; |
| for (j = 0; j < nComps; ++j) { |
| p->color[0][0].c[j] = patchesA[nPatchesA-1].color[0][1].c[j]; |
| p->color[0][1].c[j] = patchesA[nPatchesA-1].color[1][1].c[j]; |
| p->color[1][1].c[j] = c[0][j]; |
| p->color[1][0].c[j] = c[1][j]; |
| } |
| break; |
| case 2: |
| p->x[0][0] = patchesA[nPatchesA-1].x[3][3]; |
| p->y[0][0] = patchesA[nPatchesA-1].y[3][3]; |
| p->x[0][1] = patchesA[nPatchesA-1].x[3][2]; |
| p->y[0][1] = patchesA[nPatchesA-1].y[3][2]; |
| p->x[0][2] = patchesA[nPatchesA-1].x[3][1]; |
| p->y[0][2] = patchesA[nPatchesA-1].y[3][1]; |
| p->x[0][3] = patchesA[nPatchesA-1].x[3][0]; |
| p->y[0][3] = patchesA[nPatchesA-1].y[3][0]; |
| p->x[1][3] = x[0]; |
| p->y[1][3] = y[0]; |
| p->x[2][3] = x[1]; |
| p->y[2][3] = y[1]; |
| p->x[3][3] = x[2]; |
| p->y[3][3] = y[2]; |
| p->x[3][2] = x[3]; |
| p->y[3][2] = y[3]; |
| p->x[3][1] = x[4]; |
| p->y[3][1] = y[4]; |
| p->x[3][0] = x[5]; |
| p->y[3][0] = y[5]; |
| p->x[2][0] = x[6]; |
| p->y[2][0] = y[6]; |
| p->x[1][0] = x[7]; |
| p->y[1][0] = y[7]; |
| for (j = 0; j < nComps; ++j) { |
| p->color[0][0].c[j] = patchesA[nPatchesA-1].color[1][1].c[j]; |
| p->color[0][1].c[j] = patchesA[nPatchesA-1].color[1][0].c[j]; |
| p->color[1][1].c[j] = c[0][j]; |
| p->color[1][0].c[j] = c[1][j]; |
| } |
| break; |
| case 3: |
| p->x[0][0] = patchesA[nPatchesA-1].x[3][0]; |
| p->y[0][0] = patchesA[nPatchesA-1].y[3][0]; |
| p->x[0][1] = patchesA[nPatchesA-1].x[2][0]; |
| p->y[0][1] = patchesA[nPatchesA-1].y[2][0]; |
| p->x[0][2] = patchesA[nPatchesA-1].x[1][0]; |
| p->y[0][2] = patchesA[nPatchesA-1].y[1][0]; |
| p->x[0][3] = patchesA[nPatchesA-1].x[0][0]; |
| p->y[0][3] = patchesA[nPatchesA-1].y[0][0]; |
| p->x[1][3] = x[0]; |
| p->y[1][3] = y[0]; |
| p->x[2][3] = x[1]; |
| p->y[2][3] = y[1]; |
| p->x[3][3] = x[2]; |
| p->y[3][3] = y[2]; |
| p->x[3][2] = x[3]; |
| p->y[3][2] = y[3]; |
| p->x[3][1] = x[4]; |
| p->y[3][1] = y[4]; |
| p->x[3][0] = x[5]; |
| p->y[3][0] = y[5]; |
| p->x[2][0] = x[6]; |
| p->y[2][0] = y[6]; |
| p->x[1][0] = x[7]; |
| p->y[1][0] = y[7]; |
| for (j = 0; j < nComps; ++j) { |
| p->color[0][1].c[j] = patchesA[nPatchesA-1].color[1][0].c[j]; |
| p->color[0][1].c[j] = patchesA[nPatchesA-1].color[0][0].c[j]; |
| p->color[1][1].c[j] = c[0][j]; |
| p->color[1][0].c[j] = c[1][j]; |
| } |
| break; |
| } |
| } else { |
| switch (flag) { |
| case 0: |
| p->x[0][0] = x[0]; |
| p->y[0][0] = y[0]; |
| p->x[0][1] = x[1]; |
| p->y[0][1] = y[1]; |
| p->x[0][2] = x[2]; |
| p->y[0][2] = y[2]; |
| p->x[0][3] = x[3]; |
| p->y[0][3] = y[3]; |
| p->x[1][3] = x[4]; |
| p->y[1][3] = y[4]; |
| p->x[2][3] = x[5]; |
| p->y[2][3] = y[5]; |
| p->x[3][3] = x[6]; |
| p->y[3][3] = y[6]; |
| p->x[3][2] = x[7]; |
| p->y[3][2] = y[7]; |
| p->x[3][1] = x[8]; |
| p->y[3][1] = y[8]; |
| p->x[3][0] = x[9]; |
| p->y[3][0] = y[9]; |
| p->x[2][0] = x[10]; |
| p->y[2][0] = y[10]; |
| p->x[1][0] = x[11]; |
| p->y[1][0] = y[11]; |
| p->x[1][1] = x[12]; |
| p->y[1][1] = y[12]; |
| p->x[1][2] = x[13]; |
| p->y[1][2] = y[13]; |
| p->x[2][2] = x[14]; |
| p->y[2][2] = y[14]; |
| p->x[2][1] = x[15]; |
| p->y[2][1] = y[15]; |
| for (j = 0; j < nComps; ++j) { |
| p->color[0][0].c[j] = c[0][j]; |
| p->color[0][1].c[j] = c[1][j]; |
| p->color[1][1].c[j] = c[2][j]; |
| p->color[1][0].c[j] = c[3][j]; |
| } |
| break; |
| case 1: |
| p->x[0][0] = patchesA[nPatchesA-1].x[0][3]; |
| p->y[0][0] = patchesA[nPatchesA-1].y[0][3]; |
| p->x[0][1] = patchesA[nPatchesA-1].x[1][3]; |
| p->y[0][1] = patchesA[nPatchesA-1].y[1][3]; |
| p->x[0][2] = patchesA[nPatchesA-1].x[2][3]; |
| p->y[0][2] = patchesA[nPatchesA-1].y[2][3]; |
| p->x[0][3] = patchesA[nPatchesA-1].x[3][3]; |
| p->y[0][3] = patchesA[nPatchesA-1].y[3][3]; |
| p->x[1][3] = x[0]; |
| p->y[1][3] = y[0]; |
| p->x[2][3] = x[1]; |
| p->y[2][3] = y[1]; |
| p->x[3][3] = x[2]; |
| p->y[3][3] = y[2]; |
| p->x[3][2] = x[3]; |
| p->y[3][2] = y[3]; |
| p->x[3][1] = x[4]; |
| p->y[3][1] = y[4]; |
| p->x[3][0] = x[5]; |
| p->y[3][0] = y[5]; |
| p->x[2][0] = x[6]; |
| p->y[2][0] = y[6]; |
| p->x[1][0] = x[7]; |
| p->y[1][0] = y[7]; |
| p->x[1][1] = x[8]; |
| p->y[1][1] = y[8]; |
| p->x[1][2] = x[9]; |
| p->y[1][2] = y[9]; |
| p->x[2][2] = x[10]; |
| p->y[2][2] = y[10]; |
| p->x[2][1] = x[11]; |
| p->y[2][1] = y[11]; |
| for (j = 0; j < nComps; ++j) { |
| p->color[0][0].c[j] = patchesA[nPatchesA-1].color[0][1].c[j]; |
| p->color[0][1].c[j] = patchesA[nPatchesA-1].color[1][1].c[j]; |
| p->color[1][1].c[j] = c[0][j]; |
| p->color[1][0].c[j] = c[1][j]; |
| } |
| break; |
| case 2: |
| p->x[0][0] = patchesA[nPatchesA-1].x[3][3]; |
| p->y[0][0] = patchesA[nPatchesA-1].y[3][3]; |
| p->x[0][1] = patchesA[nPatchesA-1].x[3][2]; |
| p->y[0][1] = patchesA[nPatchesA-1].y[3][2]; |
| p->x[0][2] = patchesA[nPatchesA-1].x[3][1]; |
| p->y[0][2] = patchesA[nPatchesA-1].y[3][1]; |
| p->x[0][3] = patchesA[nPatchesA-1].x[3][0]; |
| p->y[0][3] = patchesA[nPatchesA-1].y[3][0]; |
| p->x[1][3] = x[0]; |
| p->y[1][3] = y[0]; |
| p->x[2][3] = x[1]; |
| p->y[2][3] = y[1]; |
| p->x[3][3] = x[2]; |
| p->y[3][3] = y[2]; |
| p->x[3][2] = x[3]; |
| p->y[3][2] = y[3]; |
| p->x[3][1] = x[4]; |
| p->y[3][1] = y[4]; |
| p->x[3][0] = x[5]; |
| p->y[3][0] = y[5]; |
| p->x[2][0] = x[6]; |
| p->y[2][0] = y[6]; |
| p->x[1][0] = x[7]; |
| p->y[1][0] = y[7]; |
| p->x[1][1] = x[8]; |
| p->y[1][1] = y[8]; |
| p->x[1][2] = x[9]; |
| p->y[1][2] = y[9]; |
| p->x[2][2] = x[10]; |
| p->y[2][2] = y[10]; |
| p->x[2][1] = x[11]; |
| p->y[2][1] = y[11]; |
| for (j = 0; j < nComps; ++j) { |
| p->color[0][0].c[j] = patchesA[nPatchesA-1].color[1][1].c[j]; |
| p->color[0][1].c[j] = patchesA[nPatchesA-1].color[1][0].c[j]; |
| p->color[1][1].c[j] = c[0][j]; |
| p->color[1][0].c[j] = c[1][j]; |
| } |
| break; |
| case 3: |
| p->x[0][0] = patchesA[nPatchesA-1].x[3][0]; |
| p->y[0][0] = patchesA[nPatchesA-1].y[3][0]; |
| p->x[0][1] = patchesA[nPatchesA-1].x[2][0]; |
| p->y[0][1] = patchesA[nPatchesA-1].y[2][0]; |
| p->x[0][2] = patchesA[nPatchesA-1].x[1][0]; |
| p->y[0][2] = patchesA[nPatchesA-1].y[1][0]; |
| p->x[0][3] = patchesA[nPatchesA-1].x[0][0]; |
| p->y[0][3] = patchesA[nPatchesA-1].y[0][0]; |
| p->x[1][3] = x[0]; |
| p->y[1][3] = y[0]; |
| p->x[2][3] = x[1]; |
| p->y[2][3] = y[1]; |
| p->x[3][3] = x[2]; |
| p->y[3][3] = y[2]; |
| p->x[3][2] = x[3]; |
| p->y[3][2] = y[3]; |
| p->x[3][1] = x[4]; |
| p->y[3][1] = y[4]; |
| p->x[3][0] = x[5]; |
| p->y[3][0] = y[5]; |
| p->x[2][0] = x[6]; |
| p->y[2][0] = y[6]; |
| p->x[1][0] = x[7]; |
| p->y[1][0] = y[7]; |
| p->x[1][1] = x[8]; |
| p->y[1][1] = y[8]; |
| p->x[1][2] = x[9]; |
| p->y[1][2] = y[9]; |
| p->x[2][2] = x[10]; |
| p->y[2][2] = y[10]; |
| p->x[2][1] = x[11]; |
| p->y[2][1] = y[11]; |
| for (j = 0; j < nComps; ++j) { |
| p->color[0][0].c[j] = patchesA[nPatchesA-1].color[1][0].c[j]; |
| p->color[0][1].c[j] = patchesA[nPatchesA-1].color[0][0].c[j]; |
| p->color[1][1].c[j] = c[0][j]; |
| p->color[1][0].c[j] = c[1][j]; |
| } |
| break; |
| } |
| } |
| ++nPatchesA; |
| bitBuf->flushBits(); |
| } |
| delete bitBuf; |
| |
| if (typeA == 6) { |
| for (i = 0; i < nPatchesA; ++i) { |
| p = &patchesA[i]; |
| p->x[1][1] = (-4 * p->x[0][0] |
| +6 * (p->x[0][1] + p->x[1][0]) |
| -2 * (p->x[0][3] + p->x[3][0]) |
| +3 * (p->x[3][1] + p->x[1][3]) |
| - p->x[3][3]) / 9; |
| p->y[1][1] = (-4 * p->y[0][0] |
| +6 * (p->y[0][1] + p->y[1][0]) |
| -2 * (p->y[0][3] + p->y[3][0]) |
| +3 * (p->y[3][1] + p->y[1][3]) |
| - p->y[3][3]) / 9; |
| p->x[1][2] = (-4 * p->x[0][3] |
| +6 * (p->x[0][2] + p->x[1][3]) |
| -2 * (p->x[0][0] + p->x[3][3]) |
| +3 * (p->x[3][2] + p->x[1][0]) |
| - p->x[3][0]) / 9; |
| p->y[1][2] = (-4 * p->y[0][3] |
| +6 * (p->y[0][2] + p->y[1][3]) |
| -2 * (p->y[0][0] + p->y[3][3]) |
| +3 * (p->y[3][2] + p->y[1][0]) |
| - p->y[3][0]) / 9; |
| p->x[2][1] = (-4 * p->x[3][0] |
| +6 * (p->x[3][1] + p->x[2][0]) |
| -2 * (p->x[3][3] + p->x[0][0]) |
| +3 * (p->x[0][1] + p->x[2][3]) |
| - p->x[0][3]) / 9; |
| p->y[2][1] = (-4 * p->y[3][0] |
| +6 * (p->y[3][1] + p->y[2][0]) |
| -2 * (p->y[3][3] + p->y[0][0]) |
| +3 * (p->y[0][1] + p->y[2][3]) |
| - p->y[0][3]) / 9; |
| p->x[2][2] = (-4 * p->x[3][3] |
| +6 * (p->x[3][2] + p->x[2][3]) |
| -2 * (p->x[3][0] + p->x[0][3]) |
| +3 * (p->x[0][2] + p->x[2][0]) |
| - p->x[0][0]) / 9; |
| p->y[2][2] = (-4 * p->y[3][3] |
| +6 * (p->y[3][2] + p->y[2][3]) |
| -2 * (p->y[3][0] + p->y[0][3]) |
| +3 * (p->y[0][2] + p->y[2][0]) |
| - p->y[0][0]) / 9; |
| } |
| } |
| |
| shading = new GfxPatchMeshShading(typeA, patchesA, nPatchesA, |
| funcsA, nFuncsA); |
| if (!shading->init(dict, gfx)) { |
| delete shading; |
| return NULL; |
| } |
| return shading; |
| |
| err2: |
| obj1.free(); |
| err1: |
| return NULL; |
| } |
| |
| GfxShading *GfxPatchMeshShading::copy() { |
| return new GfxPatchMeshShading(this); |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxImageColorMap |
| //------------------------------------------------------------------------ |
| |
| GfxImageColorMap::GfxImageColorMap(int bitsA, Object *decode, |
| GfxColorSpace *colorSpaceA) { |
| GfxIndexedColorSpace *indexedCS; |
| GfxSeparationColorSpace *sepCS; |
| int maxPixel, indexHigh; |
| Guchar *lookup2; |
| Function *sepFunc; |
| Object obj; |
| double x[gfxColorMaxComps]; |
| double y[gfxColorMaxComps]; |
| int i, j, k; |
| double mapped; |
| GBool useByteLookup; |
| |
| ok = gTrue; |
| |
| // bits per component and color space |
| bits = bitsA; |
| maxPixel = (1 << bits) - 1; |
| colorSpace = colorSpaceA; |
| |
| // this is a hack to support 16 bits images, everywhere |
| // we assume a component fits in 8 bits, with this hack |
| // we treat 16 bit images as 8 bit ones until it's fixed correctly. |
| // The hack has another part on ImageStream::getLine |
| if (maxPixel > 255) maxPixel = 255; |
| |
| // initialize |
| for (k = 0; k < gfxColorMaxComps; ++k) { |
| lookup[k] = NULL; |
| } |
| byte_lookup = NULL; |
| |
| // get decode map |
| if (decode->isNull()) { |
| nComps = colorSpace->getNComps(); |
| colorSpace->getDefaultRanges(decodeLow, decodeRange, maxPixel); |
| } else if (decode->isArray()) { |
| nComps = decode->arrayGetLength() / 2; |
| if (nComps != colorSpace->getNComps()) { |
| goto err1; |
| } |
| for (i = 0; i < nComps; ++i) { |
| decode->arrayGet(2*i, &obj); |
| if (!obj.isNum()) { |
| goto err2; |
| } |
| decodeLow[i] = obj.getNum(); |
| obj.free(); |
| decode->arrayGet(2*i+1, &obj); |
| if (!obj.isNum()) { |
| goto err2; |
| } |
| decodeRange[i] = obj.getNum() - decodeLow[i]; |
| obj.free(); |
| } |
| } else { |
| goto err1; |
| } |
| |
| // Construct a lookup table -- this stores pre-computed decoded |
| // values for each component, i.e., the result of applying the |
| // decode mapping to each possible image pixel component value. |
| // |
| // Optimization: for Indexed and Separation color spaces (which have |
| // only one component), we store color values in the lookup table |
| // rather than component values. |
| colorSpace2 = NULL; |
| nComps2 = 0; |
| useByteLookup = gFalse; |
| switch (colorSpace->getMode()) { |
| case csIndexed: |
| // Note that indexHigh may not be the same as maxPixel -- |
| // Distiller will remove unused palette entries, resulting in |
| // indexHigh < maxPixel. |
| indexedCS = (GfxIndexedColorSpace *)colorSpace; |
| colorSpace2 = indexedCS->getBase(); |
| indexHigh = indexedCS->getIndexHigh(); |
| nComps2 = colorSpace2->getNComps(); |
| lookup2 = indexedCS->getLookup(); |
| colorSpace2->getDefaultRanges(x, y, indexHigh); |
| if (colorSpace2->useGetGrayLine() || colorSpace2->useGetRGBLine()) { |
| byte_lookup = (Guchar *)gmallocn ((maxPixel + 1), nComps2); |
| useByteLookup = gTrue; |
| } |
| for (k = 0; k < nComps2; ++k) { |
| lookup[k] = (GfxColorComp *)gmallocn(maxPixel + 1, |
| sizeof(GfxColorComp)); |
| for (i = 0; i <= maxPixel; ++i) { |
| j = (int)(decodeLow[0] + (i * decodeRange[0]) / maxPixel + 0.5); |
| if (j < 0) { |
| j = 0; |
| } else if (j > indexHigh) { |
| j = indexHigh; |
| } |
| |
| mapped = x[k] + (lookup2[j*nComps2 + k] / 255.0) * y[k]; |
| lookup[k][i] = dblToCol(mapped); |
| if (useByteLookup) |
| byte_lookup[i * nComps2 + k] = (Guchar) (mapped * 255); |
| } |
| } |
| break; |
| case csSeparation: |
| sepCS = (GfxSeparationColorSpace *)colorSpace; |
| colorSpace2 = sepCS->getAlt(); |
| nComps2 = colorSpace2->getNComps(); |
| sepFunc = sepCS->getFunc(); |
| if (colorSpace2->useGetGrayLine() || colorSpace2->useGetRGBLine()) { |
| byte_lookup = (Guchar *)gmallocn ((maxPixel + 1), nComps2); |
| useByteLookup = gTrue; |
| } |
| for (k = 0; k < nComps2; ++k) { |
| lookup[k] = (GfxColorComp *)gmallocn(maxPixel + 1, |
| sizeof(GfxColorComp)); |
| for (i = 0; i <= maxPixel; ++i) { |
| x[0] = decodeLow[0] + (i * decodeRange[0]) / maxPixel; |
| sepFunc->transform(x, y); |
| lookup[k][i] = dblToCol(y[k]); |
| if (useByteLookup) |
| byte_lookup[i*nComps2 + k] = (Guchar) (y[k] * 255); |
| } |
| } |
| break; |
| default: |
| if (colorSpace->useGetGrayLine() || colorSpace->useGetRGBLine()) { |
| byte_lookup = (Guchar *)gmallocn ((maxPixel + 1), nComps); |
| useByteLookup = gTrue; |
| } |
| for (k = 0; k < nComps; ++k) { |
| lookup[k] = (GfxColorComp *)gmallocn(maxPixel + 1, |
| sizeof(GfxColorComp)); |
| for (i = 0; i <= maxPixel; ++i) { |
| mapped = decodeLow[k] + (i * decodeRange[k]) / maxPixel; |
| lookup[k][i] = dblToCol(mapped); |
| if (useByteLookup) { |
| int byte; |
| |
| byte = (int) (mapped * 255.0 + 0.5); |
| if (byte < 0) |
| byte = 0; |
| else if (byte > 255) |
| byte = 255; |
| byte_lookup[i * nComps + k] = byte; |
| } |
| } |
| } |
| } |
| |
| return; |
| |
| err2: |
| obj.free(); |
| err1: |
| ok = gFalse; |
| } |
| |
| GfxImageColorMap::GfxImageColorMap(GfxImageColorMap *colorMap) { |
| int n, i, k; |
| |
| colorSpace = colorMap->colorSpace->copy(); |
| bits = colorMap->bits; |
| nComps = colorMap->nComps; |
| nComps2 = colorMap->nComps2; |
| colorSpace2 = NULL; |
| for (k = 0; k < gfxColorMaxComps; ++k) { |
| lookup[k] = NULL; |
| } |
| n = 1 << bits; |
| if (colorSpace->getMode() == csIndexed) { |
| colorSpace2 = ((GfxIndexedColorSpace *)colorSpace)->getBase(); |
| for (k = 0; k < nComps2; ++k) { |
| lookup[k] = (GfxColorComp *)gmallocn(n, sizeof(GfxColorComp)); |
| memcpy(lookup[k], colorMap->lookup[k], n * sizeof(GfxColorComp)); |
| } |
| } else if (colorSpace->getMode() == csSeparation) { |
| colorSpace2 = ((GfxSeparationColorSpace *)colorSpace)->getAlt(); |
| for (k = 0; k < nComps2; ++k) { |
| lookup[k] = (GfxColorComp *)gmallocn(n, sizeof(GfxColorComp)); |
| memcpy(lookup[k], colorMap->lookup[k], n * sizeof(GfxColorComp)); |
| } |
| } else { |
| for (k = 0; k < nComps; ++k) { |
| lookup[k] = (GfxColorComp *)gmallocn(n, sizeof(GfxColorComp)); |
| memcpy(lookup[k], colorMap->lookup[k], n * sizeof(GfxColorComp)); |
| } |
| } |
| if (colorMap->byte_lookup) { |
| int nc = colorSpace2 ? nComps2 : nComps; |
| |
| byte_lookup = (Guchar *)gmallocn (n, nc); |
| memcpy(byte_lookup, colorMap->byte_lookup, n * nc); |
| } |
| for (i = 0; i < nComps; ++i) { |
| decodeLow[i] = colorMap->decodeLow[i]; |
| decodeRange[i] = colorMap->decodeRange[i]; |
| } |
| ok = gTrue; |
| } |
| |
| GfxImageColorMap::~GfxImageColorMap() { |
| int i; |
| |
| delete colorSpace; |
| for (i = 0; i < gfxColorMaxComps; ++i) { |
| gfree(lookup[i]); |
| } |
| gfree(byte_lookup); |
| } |
| |
| void GfxImageColorMap::getGray(Guchar *x, GfxGray *gray) { |
| GfxColor color; |
| int i; |
| |
| if (colorSpace2) { |
| for (i = 0; i < nComps2; ++i) { |
| color.c[i] = lookup[i][x[0]]; |
| } |
| colorSpace2->getGray(&color, gray); |
| } else { |
| for (i = 0; i < nComps; ++i) { |
| color.c[i] = lookup[i][x[i]]; |
| } |
| colorSpace->getGray(&color, gray); |
| } |
| } |
| |
| void GfxImageColorMap::getRGB(Guchar *x, GfxRGB *rgb) { |
| GfxColor color; |
| int i; |
| |
| if (colorSpace2) { |
| for (i = 0; i < nComps2; ++i) { |
| color.c[i] = lookup[i][x[0]]; |
| } |
| colorSpace2->getRGB(&color, rgb); |
| } else { |
| for (i = 0; i < nComps; ++i) { |
| color.c[i] = lookup[i][x[i]]; |
| } |
| colorSpace->getRGB(&color, rgb); |
| } |
| } |
| |
| void GfxImageColorMap::getGrayLine(Guchar *in, Guchar *out, int length) { |
| int i, j; |
| Guchar *inp, *tmp_line; |
| |
| if ((colorSpace2 && !colorSpace2->useGetGrayLine ()) || |
| (!colorSpace2 && !colorSpace->useGetGrayLine ())) { |
| GfxGray gray; |
| |
| inp = in; |
| for (i = 0; i < length; i++) { |
| getGray (inp, &gray); |
| out[i] = colToByte(gray); |
| inp += nComps; |
| } |
| return; |
| } |
| |
| switch (colorSpace->getMode()) { |
| case csIndexed: |
| case csSeparation: |
| tmp_line = (Guchar *) gmallocn (length, nComps2); |
| for (i = 0; i < length; i++) { |
| for (j = 0; j < nComps2; j++) { |
| tmp_line[i * nComps2 + j] = byte_lookup[in[i] * nComps2 + j]; |
| } |
| } |
| colorSpace2->getGrayLine(tmp_line, out, length); |
| gfree (tmp_line); |
| break; |
| |
| default: |
| inp = in; |
| for (j = 0; j < length; j++) |
| for (i = 0; i < nComps; i++) { |
| *inp = byte_lookup[*inp * nComps + i]; |
| inp++; |
| } |
| colorSpace->getGrayLine(in, out, length); |
| break; |
| } |
| |
| } |
| |
| void GfxImageColorMap::getRGBLine(Guchar *in, unsigned int *out, int length) { |
| int i, j; |
| Guchar *inp, *tmp_line; |
| |
| if ((colorSpace2 && !colorSpace2->useGetRGBLine ()) || |
| (!colorSpace2 && !colorSpace->useGetRGBLine ())) { |
| GfxRGB rgb; |
| |
| inp = in; |
| for (i = 0; i < length; i++) { |
| getRGB (inp, &rgb); |
| out[i] = |
| ((int) colToByte(rgb.r) << 16) | |
| ((int) colToByte(rgb.g) << 8) | |
| ((int) colToByte(rgb.b) << 0); |
| inp += nComps; |
| } |
| return; |
| } |
| |
| switch (colorSpace->getMode()) { |
| case csIndexed: |
| case csSeparation: |
| tmp_line = (Guchar *) gmallocn (length, nComps2); |
| for (i = 0; i < length; i++) { |
| for (j = 0; j < nComps2; j++) { |
| tmp_line[i * nComps2 + j] = byte_lookup[in[i] * nComps2 + j]; |
| } |
| } |
| colorSpace2->getRGBLine(tmp_line, out, length); |
| gfree (tmp_line); |
| break; |
| |
| default: |
| inp = in; |
| for (j = 0; j < length; j++) |
| for (i = 0; i < nComps; i++) { |
| *inp = byte_lookup[*inp * nComps + i]; |
| inp++; |
| } |
| colorSpace->getRGBLine(in, out, length); |
| break; |
| } |
| |
| } |
| |
| void GfxImageColorMap::getCMYK(Guchar *x, GfxCMYK *cmyk) { |
| GfxColor color; |
| int i; |
| |
| if (colorSpace2) { |
| for (i = 0; i < nComps2; ++i) { |
| color.c[i] = lookup[i][x[0]]; |
| } |
| colorSpace2->getCMYK(&color, cmyk); |
| } else { |
| for (i = 0; i < nComps; ++i) { |
| color.c[i] = lookup[i][x[i]]; |
| } |
| colorSpace->getCMYK(&color, cmyk); |
| } |
| } |
| |
| void GfxImageColorMap::getColor(Guchar *x, GfxColor *color) { |
| int maxPixel, i; |
| |
| maxPixel = (1 << bits) - 1; |
| for (i = 0; i < nComps; ++i) { |
| color->c[i] = dblToCol(decodeLow[i] + (x[i] * decodeRange[i]) / maxPixel); |
| } |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxSubpath and GfxPath |
| //------------------------------------------------------------------------ |
| |
| GfxSubpath::GfxSubpath(double x1, double y1) { |
| size = 16; |
| x = (double *)gmallocn(size, sizeof(double)); |
| y = (double *)gmallocn(size, sizeof(double)); |
| curve = (GBool *)gmallocn(size, sizeof(GBool)); |
| n = 1; |
| x[0] = x1; |
| y[0] = y1; |
| curve[0] = gFalse; |
| closed = gFalse; |
| } |
| |
| GfxSubpath::~GfxSubpath() { |
| gfree(x); |
| gfree(y); |
| gfree(curve); |
| } |
| |
| // Used for copy(). |
| GfxSubpath::GfxSubpath(GfxSubpath *subpath) { |
| size = subpath->size; |
| n = subpath->n; |
| x = (double *)gmallocn(size, sizeof(double)); |
| y = (double *)gmallocn(size, sizeof(double)); |
| curve = (GBool *)gmallocn(size, sizeof(GBool)); |
| memcpy(x, subpath->x, n * sizeof(double)); |
| memcpy(y, subpath->y, n * sizeof(double)); |
| memcpy(curve, subpath->curve, n * sizeof(GBool)); |
| closed = subpath->closed; |
| } |
| |
| void GfxSubpath::lineTo(double x1, double y1) { |
| if (n >= size) { |
| size += 16; |
| x = (double *)greallocn(x, size, sizeof(double)); |
| y = (double *)greallocn(y, size, sizeof(double)); |
| curve = (GBool *)greallocn(curve, size, sizeof(GBool)); |
| } |
| x[n] = x1; |
| y[n] = y1; |
| curve[n] = gFalse; |
| ++n; |
| } |
| |
| void GfxSubpath::curveTo(double x1, double y1, double x2, double y2, |
| double x3, double y3) { |
| if (n+3 > size) { |
| size += 16; |
| x = (double *)greallocn(x, size, sizeof(double)); |
| y = (double *)greallocn(y, size, sizeof(double)); |
| curve = (GBool *)greallocn(curve, size, sizeof(GBool)); |
| } |
| x[n] = x1; |
| y[n] = y1; |
| x[n+1] = x2; |
| y[n+1] = y2; |
| x[n+2] = x3; |
| y[n+2] = y3; |
| curve[n] = curve[n+1] = gTrue; |
| curve[n+2] = gFalse; |
| n += 3; |
| } |
| |
| void GfxSubpath::close() { |
| if (x[n-1] != x[0] || y[n-1] != y[0]) { |
| lineTo(x[0], y[0]); |
| } |
| closed = gTrue; |
| } |
| |
| void GfxSubpath::offset(double dx, double dy) { |
| int i; |
| |
| for (i = 0; i < n; ++i) { |
| x[i] += dx; |
| y[i] += dy; |
| } |
| } |
| |
| GfxPath::GfxPath() { |
| justMoved = gFalse; |
| size = 16; |
| n = 0; |
| firstX = firstY = 0; |
| subpaths = (GfxSubpath **)gmallocn(size, sizeof(GfxSubpath *)); |
| } |
| |
| GfxPath::~GfxPath() { |
| int i; |
| |
| for (i = 0; i < n; ++i) |
| delete subpaths[i]; |
| gfree(subpaths); |
| } |
| |
| // Used for copy(). |
| GfxPath::GfxPath(GBool justMoved1, double firstX1, double firstY1, |
| GfxSubpath **subpaths1, int n1, int size1) { |
| int i; |
| |
| justMoved = justMoved1; |
| firstX = firstX1; |
| firstY = firstY1; |
| size = size1; |
| n = n1; |
| subpaths = (GfxSubpath **)gmallocn(size, sizeof(GfxSubpath *)); |
| for (i = 0; i < n; ++i) |
| subpaths[i] = subpaths1[i]->copy(); |
| } |
| |
| void GfxPath::moveTo(double x, double y) { |
| justMoved = gTrue; |
| firstX = x; |
| firstY = y; |
| } |
| |
| void GfxPath::lineTo(double x, double y) { |
| if (justMoved) { |
| if (n >= size) { |
| size += 16; |
| subpaths = (GfxSubpath **) |
| greallocn(subpaths, size, sizeof(GfxSubpath *)); |
| } |
| subpaths[n] = new GfxSubpath(firstX, firstY); |
| ++n; |
| justMoved = gFalse; |
| } |
| subpaths[n-1]->lineTo(x, y); |
| } |
| |
| void GfxPath::curveTo(double x1, double y1, double x2, double y2, |
| double x3, double y3) { |
| if (justMoved) { |
| if (n >= size) { |
| size += 16; |
| subpaths = (GfxSubpath **) |
| greallocn(subpaths, size, sizeof(GfxSubpath *)); |
| } |
| subpaths[n] = new GfxSubpath(firstX, firstY); |
| ++n; |
| justMoved = gFalse; |
| } |
| subpaths[n-1]->curveTo(x1, y1, x2, y2, x3, y3); |
| } |
| |
| void GfxPath::close() { |
| // this is necessary to handle the pathological case of |
| // moveto/closepath/clip, which defines an empty clipping region |
| if (justMoved) { |
| if (n >= size) { |
| size += 16; |
| subpaths = (GfxSubpath **) |
| greallocn(subpaths, size, sizeof(GfxSubpath *)); |
| } |
| subpaths[n] = new GfxSubpath(firstX, firstY); |
| ++n; |
| justMoved = gFalse; |
| } |
| subpaths[n-1]->close(); |
| } |
| |
| void GfxPath::append(GfxPath *path) { |
| int i; |
| |
| if (n + path->n > size) { |
| size = n + path->n; |
| subpaths = (GfxSubpath **) |
| greallocn(subpaths, size, sizeof(GfxSubpath *)); |
| } |
| for (i = 0; i < path->n; ++i) { |
| subpaths[n++] = path->subpaths[i]->copy(); |
| } |
| justMoved = gFalse; |
| } |
| |
| void GfxPath::offset(double dx, double dy) { |
| int i; |
| |
| for (i = 0; i < n; ++i) { |
| subpaths[i]->offset(dx, dy); |
| } |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxState |
| //------------------------------------------------------------------------ |
| |
| GfxState::GfxState(double hDPIA, double vDPIA, PDFRectangle *pageBox, |
| int rotateA, GBool upsideDown) { |
| double kx, ky; |
| |
| hDPI = hDPIA; |
| vDPI = vDPIA; |
| rotate = rotateA; |
| px1 = pageBox->x1; |
| py1 = pageBox->y1; |
| px2 = pageBox->x2; |
| py2 = pageBox->y2; |
| kx = hDPI / 72.0; |
| ky = vDPI / 72.0; |
| if (rotate == 90) { |
| ctm[0] = 0; |
| ctm[1] = upsideDown ? ky : -ky; |
| ctm[2] = kx; |
| ctm[3] = 0; |
| ctm[4] = -kx * py1; |
| ctm[5] = ky * (upsideDown ? -px1 : px2); |
| pageWidth = kx * (py2 - py1); |
| pageHeight = ky * (px2 - px1); |
| } else if (rotate == 180) { |
| ctm[0] = -kx; |
| ctm[1] = 0; |
| ctm[2] = 0; |
| ctm[3] = upsideDown ? ky : -ky; |
| ctm[4] = kx * px2; |
| ctm[5] = ky * (upsideDown ? -py1 : py2); |
| pageWidth = kx * (px2 - px1); |
| pageHeight = ky * (py2 - py1); |
| } else if (rotate == 270) { |
| ctm[0] = 0; |
| ctm[1] = upsideDown ? -ky : ky; |
| ctm[2] = -kx; |
| ctm[3] = 0; |
| ctm[4] = kx * py2; |
| ctm[5] = ky * (upsideDown ? px2 : -px1); |
| pageWidth = kx * (py2 - py1); |
| pageHeight = ky * (px2 - px1); |
| } else { |
| ctm[0] = kx; |
| ctm[1] = 0; |
| ctm[2] = 0; |
| ctm[3] = upsideDown ? -ky : ky; |
| ctm[4] = -kx * px1; |
| ctm[5] = ky * (upsideDown ? py2 : -py1); |
| pageWidth = kx * (px2 - px1); |
| pageHeight = ky * (py2 - py1); |
| } |
| |
| fillColorSpace = new GfxDeviceGrayColorSpace(); |
| strokeColorSpace = new GfxDeviceGrayColorSpace(); |
| fillColor.c[0] = 0; |
| strokeColor.c[0] = 0; |
| fillPattern = NULL; |
| strokePattern = NULL; |
| blendMode = gfxBlendNormal; |
| fillOpacity = 1; |
| strokeOpacity = 1; |
| fillOverprint = gFalse; |
| strokeOverprint = gFalse; |
| transfer[0] = transfer[1] = transfer[2] = transfer[3] = NULL; |
| |
| lineWidth = 1; |
| lineDash = NULL; |
| lineDashLength = 0; |
| lineDashStart = 0; |
| flatness = 1; |
| lineJoin = 0; |
| lineCap = 0; |
| miterLimit = 10; |
| strokeAdjust = gFalse; |
| |
| font = NULL; |
| fontSize = 0; |
| textMat[0] = 1; textMat[1] = 0; |
| textMat[2] = 0; textMat[3] = 1; |
| textMat[4] = 0; textMat[5] = 0; |
| charSpace = 0; |
| wordSpace = 0; |
| horizScaling = 1; |
| leading = 0; |
| rise = 0; |
| render = 0; |
| |
| path = new GfxPath(); |
| curX = curY = 0; |
| lineX = lineY = 0; |
| |
| clipXMin = 0; |
| clipYMin = 0; |
| clipXMax = pageWidth; |
| clipYMax = pageHeight; |
| |
| saved = NULL; |
| #ifdef USE_CMS |
| GfxColorSpace::setupColorProfiles(); |
| #endif |
| } |
| |
| GfxState::~GfxState() { |
| int i; |
| |
| if (fillColorSpace) { |
| delete fillColorSpace; |
| } |
| if (strokeColorSpace) { |
| delete strokeColorSpace; |
| } |
| if (fillPattern) { |
| delete fillPattern; |
| } |
| if (strokePattern) { |
| delete strokePattern; |
| } |
| for (i = 0; i < 4; ++i) { |
| if (transfer[i]) { |
| delete transfer[i]; |
| } |
| } |
| gfree(lineDash); |
| if (path) { |
| // this gets set to NULL by restore() |
| delete path; |
| } |
| if (saved) { |
| delete saved; |
| } |
| if (font) { |
| font->decRefCnt(); |
| } |
| } |
| |
| // Used for copy(); |
| GfxState::GfxState(GfxState *state) { |
| int i; |
| |
| memcpy(this, state, sizeof(GfxState)); |
| if (fillColorSpace) { |
| fillColorSpace = state->fillColorSpace->copy(); |
| } |
| if (strokeColorSpace) { |
| strokeColorSpace = state->strokeColorSpace->copy(); |
| } |
| if (fillPattern) { |
| fillPattern = state->fillPattern->copy(); |
| } |
| if (strokePattern) { |
| strokePattern = state->strokePattern->copy(); |
| } |
| for (i = 0; i < 4; ++i) { |
| if (transfer[i]) { |
| transfer[i] = state->transfer[i]->copy(); |
| } |
| } |
| if (lineDashLength > 0) { |
| lineDash = (double *)gmallocn(lineDashLength, sizeof(double)); |
| memcpy(lineDash, state->lineDash, lineDashLength * sizeof(double)); |
| } |
| if (font) |
| font->incRefCnt(); |
| |
| saved = NULL; |
| } |
| |
| void GfxState::setPath(GfxPath *pathA) { |
| delete path; |
| path = pathA; |
| } |
| |
| void GfxState::getUserClipBBox(double *xMin, double *yMin, |
| double *xMax, double *yMax) { |
| double ictm[6]; |
| double xMin1, yMin1, xMax1, yMax1, det, tx, ty; |
| |
| // invert the CTM |
| det = 1 / (ctm[0] * ctm[3] - ctm[1] * ctm[2]); |
| ictm[0] = ctm[3] * det; |
| ictm[1] = -ctm[1] * det; |
| ictm[2] = -ctm[2] * det; |
| ictm[3] = ctm[0] * det; |
| ictm[4] = (ctm[2] * ctm[5] - ctm[3] * ctm[4]) * det; |
| ictm[5] = (ctm[1] * ctm[4] - ctm[0] * ctm[5]) * det; |
| |
| // transform all four corners of the clip bbox; find the min and max |
| // x and y values |
| xMin1 = xMax1 = clipXMin * ictm[0] + clipYMin * ictm[2] + ictm[4]; |
| yMin1 = yMax1 = clipXMin * ictm[1] + clipYMin * ictm[3] + ictm[5]; |
| tx = clipXMin * ictm[0] + clipYMax * ictm[2] + ictm[4]; |
| ty = clipXMin * ictm[1] + clipYMax * ictm[3] + ictm[5]; |
| if (tx < xMin1) { |
| xMin1 = tx; |
| } else if (tx > xMax1) { |
| xMax1 = tx; |
| } |
| if (ty < yMin1) { |
| yMin1 = ty; |
| } else if (ty > yMax1) { |
| yMax1 = ty; |
| } |
| tx = clipXMax * ictm[0] + clipYMin * ictm[2] + ictm[4]; |
| ty = clipXMax * ictm[1] + clipYMin * ictm[3] + ictm[5]; |
| if (tx < xMin1) { |
| xMin1 = tx; |
| } else if (tx > xMax1) { |
| xMax1 = tx; |
| } |
| if (ty < yMin1) { |
| yMin1 = ty; |
| } else if (ty > yMax1) { |
| yMax1 = ty; |
| } |
| tx = clipXMax * ictm[0] + clipYMax * ictm[2] + ictm[4]; |
| ty = clipXMax * ictm[1] + clipYMax * ictm[3] + ictm[5]; |
| if (tx < xMin1) { |
| xMin1 = tx; |
| } else if (tx > xMax1) { |
| xMax1 = tx; |
| } |
| if (ty < yMin1) { |
| yMin1 = ty; |
| } else if (ty > yMax1) { |
| yMax1 = ty; |
| } |
| |
| *xMin = xMin1; |
| *yMin = yMin1; |
| *xMax = xMax1; |
| *yMax = yMax1; |
| } |
| |
| double GfxState::transformWidth(double w) { |
| double x, y; |
| |
| x = ctm[0] + ctm[2]; |
| y = ctm[1] + ctm[3]; |
| return w * sqrt(0.5 * (x * x + y * y)); |
| } |
| |
| double GfxState::getTransformedFontSize() { |
| double x1, y1, x2, y2; |
| |
| x1 = textMat[2] * fontSize; |
| y1 = textMat[3] * fontSize; |
| x2 = ctm[0] * x1 + ctm[2] * y1; |
| y2 = ctm[1] * x1 + ctm[3] * y1; |
| return sqrt(x2 * x2 + y2 * y2); |
| } |
| |
| void GfxState::getFontTransMat(double *m11, double *m12, |
| double *m21, double *m22) { |
| *m11 = (textMat[0] * ctm[0] + textMat[1] * ctm[2]) * fontSize; |
| *m12 = (textMat[0] * ctm[1] + textMat[1] * ctm[3]) * fontSize; |
| *m21 = (textMat[2] * ctm[0] + textMat[3] * ctm[2]) * fontSize; |
| *m22 = (textMat[2] * ctm[1] + textMat[3] * ctm[3]) * fontSize; |
| } |
| |
| void GfxState::setCTM(double a, double b, double c, |
| double d, double e, double f) { |
| ctm[0] = a; |
| ctm[1] = b; |
| ctm[2] = c; |
| ctm[3] = d; |
| ctm[4] = e; |
| ctm[5] = f; |
| } |
| |
| void GfxState::concatCTM(double a, double b, double c, |
| double d, double e, double f) { |
| double a1 = ctm[0]; |
| double b1 = ctm[1]; |
| double c1 = ctm[2]; |
| double d1 = ctm[3]; |
| |
| ctm[0] = a * a1 + b * c1; |
| ctm[1] = a * b1 + b * d1; |
| ctm[2] = c * a1 + d * c1; |
| ctm[3] = c * b1 + d * d1; |
| ctm[4] = e * a1 + f * c1 + ctm[4]; |
| ctm[5] = e * b1 + f * d1 + ctm[5]; |
| } |
| |
| void GfxState::shiftCTM(double tx, double ty) { |
| ctm[4] += tx; |
| ctm[5] += ty; |
| clipXMin += tx; |
| clipYMin += ty; |
| clipXMax += tx; |
| clipYMax += ty; |
| } |
| |
| void GfxState::setFillColorSpace(GfxColorSpace *colorSpace) { |
| if (fillColorSpace) { |
| delete fillColorSpace; |
| } |
| fillColorSpace = colorSpace; |
| } |
| |
| void GfxState::setStrokeColorSpace(GfxColorSpace *colorSpace) { |
| if (strokeColorSpace) { |
| delete strokeColorSpace; |
| } |
| strokeColorSpace = colorSpace; |
| } |
| |
| void GfxState::setFillPattern(GfxPattern *pattern) { |
| if (fillPattern) { |
| delete fillPattern; |
| } |
| fillPattern = pattern; |
| } |
| |
| void GfxState::setStrokePattern(GfxPattern *pattern) { |
| if (strokePattern) { |
| delete strokePattern; |
| } |
| strokePattern = pattern; |
| } |
| |
| void GfxState::setFont(GfxFont *fontA, double fontSizeA) { |
| if (font) |
| font->decRefCnt(); |
| |
| font = fontA; |
| fontSize = fontSizeA; |
| } |
| |
| void GfxState::setTransfer(Function **funcs) { |
| int i; |
| |
| for (i = 0; i < 4; ++i) { |
| if (transfer[i]) { |
| delete transfer[i]; |
| } |
| transfer[i] = funcs[i]; |
| } |
| } |
| |
| void GfxState::setLineDash(double *dash, int length, double start) { |
| if (lineDash) |
| gfree(lineDash); |
| lineDash = dash; |
| lineDashLength = length; |
| lineDashStart = start; |
| } |
| |
| void GfxState::clearPath() { |
| delete path; |
| path = new GfxPath(); |
| } |
| |
| void GfxState::clip() { |
| double xMin, yMin, xMax, yMax, x, y; |
| GfxSubpath *subpath; |
| int i, j; |
| |
| xMin = xMax = yMin = yMax = 0; // make gcc happy |
| for (i = 0; i < path->getNumSubpaths(); ++i) { |
| subpath = path->getSubpath(i); |
| for (j = 0; j < subpath->getNumPoints(); ++j) { |
| transform(subpath->getX(j), subpath->getY(j), &x, &y); |
| if (i == 0 && j == 0) { |
| xMin = xMax = x; |
| yMin = yMax = y; |
| } else { |
| if (x < xMin) { |
| xMin = x; |
| } else if (x > xMax) { |
| xMax = x; |
| } |
| if (y < yMin) { |
| yMin = y; |
| } else if (y > yMax) { |
| yMax = y; |
| } |
| } |
| } |
| } |
| if (xMin > clipXMin) { |
| clipXMin = xMin; |
| } |
| if (yMin > clipYMin) { |
| clipYMin = yMin; |
| } |
| if (xMax < clipXMax) { |
| clipXMax = xMax; |
| } |
| if (yMax < clipYMax) { |
| clipYMax = yMax; |
| } |
| } |
| |
| void GfxState::clipToStrokePath() { |
| double xMin, yMin, xMax, yMax, x, y, t0, t1; |
| GfxSubpath *subpath; |
| int i, j; |
| |
| xMin = xMax = yMin = yMax = 0; // make gcc happy |
| for (i = 0; i < path->getNumSubpaths(); ++i) { |
| subpath = path->getSubpath(i); |
| for (j = 0; j < subpath->getNumPoints(); ++j) { |
| transform(subpath->getX(j), subpath->getY(j), &x, &y); |
| if (i == 0 && j == 0) { |
| xMin = xMax = x; |
| yMin = yMax = y; |
| } else { |
| if (x < xMin) { |
| xMin = x; |
| } else if (x > xMax) { |
| xMax = x; |
| } |
| if (y < yMin) { |
| yMin = y; |
| } else if (y > yMax) { |
| yMax = y; |
| } |
| } |
| } |
| } |
| |
| // allow for the line width |
| //~ miter joins can extend farther than this |
| t0 = fabs(ctm[0]); |
| t1 = fabs(ctm[2]); |
| if (t0 > t1) { |
| xMin -= 0.5 * lineWidth * t0; |
| xMax += 0.5 * lineWidth * t0; |
| } else { |
| xMin -= 0.5 * lineWidth * t1; |
| xMax += 0.5 * lineWidth * t1; |
| } |
| t0 = fabs(ctm[0]); |
| t1 = fabs(ctm[3]); |
| if (t0 > t1) { |
| yMin -= 0.5 * lineWidth * t0; |
| yMax += 0.5 * lineWidth * t0; |
| } else { |
| yMin -= 0.5 * lineWidth * t1; |
| yMax += 0.5 * lineWidth * t1; |
| } |
| |
| if (xMin > clipXMin) { |
| clipXMin = xMin; |
| } |
| if (yMin > clipYMin) { |
| clipYMin = yMin; |
| } |
| if (xMax < clipXMax) { |
| clipXMax = xMax; |
| } |
| if (yMax < clipYMax) { |
| clipYMax = yMax; |
| } |
| } |
| |
| void GfxState::textShift(double tx, double ty) { |
| double dx, dy; |
| |
| textTransformDelta(tx, ty, &dx, &dy); |
| curX += dx; |
| curY += dy; |
| } |
| |
| void GfxState::shift(double dx, double dy) { |
| curX += dx; |
| curY += dy; |
| } |
| |
| GfxState *GfxState::save() { |
| GfxState *newState; |
| |
| newState = copy(); |
| newState->saved = this; |
| return newState; |
| } |
| |
| GfxState *GfxState::restore() { |
| GfxState *oldState; |
| |
| if (saved) { |
| oldState = saved; |
| |
| // these attributes aren't saved/restored by the q/Q operators |
| oldState->path = path; |
| oldState->curX = curX; |
| oldState->curY = curY; |
| oldState->lineX = lineX; |
| oldState->lineY = lineY; |
| |
| path = NULL; |
| saved = NULL; |
| delete this; |
| |
| } else { |
| oldState = this; |
| } |
| |
| return oldState; |
| } |
| |
| GBool GfxState::parseBlendMode(Object *obj, GfxBlendMode *mode) { |
| Object obj2; |
| int i, j; |
| |
| if (obj->isName()) { |
| for (i = 0; i < nGfxBlendModeNames; ++i) { |
| if (!strcmp(obj->getName(), gfxBlendModeNames[i].name)) { |
| *mode = gfxBlendModeNames[i].mode; |
| return gTrue; |
| } |
| } |
| return gFalse; |
| } else if (obj->isArray()) { |
| for (i = 0; i < obj->arrayGetLength(); ++i) { |
| obj->arrayGet(i, &obj2); |
| if (!obj2.isName()) { |
| obj2.free(); |
| return gFalse; |
| } |
| for (j = 0; j < nGfxBlendModeNames; ++j) { |
| if (!strcmp(obj2.getName(), gfxBlendModeNames[j].name)) { |
| obj2.free(); |
| *mode = gfxBlendModeNames[j].mode; |
| return gTrue; |
| } |
| } |
| obj2.free(); |
| } |
| *mode = gfxBlendNormal; |
| return gTrue; |
| } else { |
| return gFalse; |
| } |
| } |
