| //======================================================================== |
| // |
| // OutputDev.h |
| // |
| // 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 Jonathan Blandford <jrb@redhat.com> |
| // Copyright (C) 2006 Thorkild Stray <thorkild@ifi.uio.no> |
| // Copyright (C) 2007 Jeff Muizelaar <jeff@infidigm.net> |
| // Copyright (C) 2007, 2011, 2017, 2021, 2023 Adrian Johnson <ajohnson@redneon.com> |
| // Copyright (C) 2009-2013, 2015 Thomas Freitag <Thomas.Freitag@alfa.de> |
| // Copyright (C) 2009, 2011 Carlos Garcia Campos <carlosgc@gnome.org> |
| // Copyright (C) 2009, 2012, 2013, 2018, 2019, 2021 Albert Astals Cid <aacid@kde.org> |
| // Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com> |
| // Copyright (C) 2012 Fabio D'Urso <fabiodurso@hotmail.it> |
| // Copyright (C) 2012 William Bader <williambader@hotmail.com> |
| // Copyright (C) 2017, 2018, 2020 Oliver Sander <oliver.sander@tu-dresden.de> |
| // Copyright (C) 2018 Klarälvdalens Datakonsult AB, a KDAB Group company, <info@kdab.com>. Work sponsored by the LiMux project of the city of Munich |
| // Copyright (C) 2018 Adam Reichold <adam.reichold@t-online.de> |
| // Copyright (C) 2020 Philipp Knechtges <philipp-dev@knechtges.com> |
| // |
| // 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 |
| // |
| //======================================================================== |
| |
| #ifndef OUTPUTDEV_H |
| #define OUTPUTDEV_H |
| |
| #include "poppler-config.h" |
| #include "poppler_private_export.h" |
| #include "CharTypes.h" |
| #include "Object.h" |
| #include "PopplerCache.h" |
| #include "ProfileData.h" |
| #include "GfxState.h" |
| #include <memory> |
| #include <unordered_map> |
| #include <string> |
| |
| class Annot; |
| class Dict; |
| class GooString; |
| class Gfx; |
| class Stream; |
| class Links; |
| class AnnotLink; |
| class Catalog; |
| class Page; |
| class Function; |
| |
| //------------------------------------------------------------------------ |
| // OutputDev |
| //------------------------------------------------------------------------ |
| |
| class POPPLER_PRIVATE_EXPORT OutputDev |
| { |
| public: |
| // Constructor. |
| OutputDev(); |
| |
| // Destructor. |
| virtual ~OutputDev(); |
| |
| //----- get info about output device |
| |
| // Does this device use upside-down coordinates? |
| // (Upside-down means (0,0) is the top left corner of the page.) |
| virtual bool upsideDown() = 0; |
| |
| // Does this device use drawChar() or drawString()? |
| virtual bool useDrawChar() = 0; |
| |
| // Does this device use tilingPatternFill()? If this returns false, |
| // tiling pattern fills will be reduced to a series of other drawing |
| // operations. |
| virtual bool useTilingPatternFill() { return false; } |
| |
| // Does this device support specific shading types? |
| // see gouraudTriangleShadedFill() and patchMeshShadedFill() |
| virtual bool useShadedFills(int type) { return false; } |
| |
| // Does this device use FillColorStop()? |
| virtual bool useFillColorStop() { return false; } |
| |
| // Does this device use drawForm()? If this returns false, |
| // form-type XObjects will be interpreted (i.e., unrolled). |
| virtual bool useDrawForm() { return false; } |
| |
| // Does this device use beginType3Char/endType3Char? Otherwise, |
| // text in Type 3 fonts will be drawn with drawChar/drawString. |
| virtual bool interpretType3Chars() = 0; |
| |
| // Does this device need non-text content? |
| virtual bool needNonText() { return true; } |
| |
| // Does this device require incCharCount to be called for text on |
| // non-shown layers? |
| virtual bool needCharCount() { return false; } |
| |
| // Does this device need to clip pages to the crop box even when the |
| // box is the crop box? |
| virtual bool needClipToCropBox() { return false; } |
| |
| //----- initialization and control |
| |
| // Set default transform matrix. |
| virtual void setDefaultCTM(const double *ctm); |
| |
| // Check to see if a page slice should be displayed. If this |
| // returns false, the page display is aborted. Typically, an |
| // OutputDev will use some alternate means to display the page |
| // before returning false. |
| virtual bool checkPageSlice(Page *page, double hDPI, double vDPI, int rotate, bool useMediaBox, bool crop, int sliceX, int sliceY, int sliceW, int sliceH, bool printing, bool (*abortCheckCbk)(void *data) = nullptr, |
| void *abortCheckCbkData = nullptr, bool (*annotDisplayDecideCbk)(Annot *annot, void *user_data) = nullptr, void *annotDisplayDecideCbkData = nullptr) |
| { |
| return true; |
| } |
| |
| // Start a page. |
| virtual void startPage(int pageNum, GfxState *state, XRef *xref) { } |
| |
| // End a page. |
| virtual void endPage() { } |
| |
| // Dump page contents to display. |
| virtual void dump() { } |
| |
| virtual void initGfxState(GfxState *state) |
| { |
| #ifdef USE_CMS |
| state->setDisplayProfile(displayprofile); |
| |
| auto invalidref = Ref::INVALID(); |
| if (defaultGrayProfile) { |
| auto cs = new GfxICCBasedColorSpace(1, new GfxDeviceGrayColorSpace(), &invalidref); |
| |
| cs->setProfile(defaultGrayProfile); |
| cs->buildTransforms(state); // needs to happen after state->setDisplayProfile has been called |
| state->setDefaultGrayColorSpace(cs); |
| } |
| |
| if (defaultRGBProfile) { |
| auto cs = new GfxICCBasedColorSpace(3, new GfxDeviceRGBColorSpace(), &invalidref); |
| |
| cs->setProfile(defaultRGBProfile); |
| cs->buildTransforms(state); // needs to happen after state->setDisplayProfile has been called |
| state->setDefaultRGBColorSpace(cs); |
| } |
| |
| if (defaultCMYKProfile) { |
| auto cs = new GfxICCBasedColorSpace(4, new GfxDeviceCMYKColorSpace(), &invalidref); |
| |
| cs->setProfile(defaultCMYKProfile); |
| cs->buildTransforms(state); // needs to happen after state->setDisplayProfile has been called |
| state->setDefaultCMYKColorSpace(cs); |
| } |
| #endif |
| } |
| |
| //----- coordinate conversion |
| |
| // Convert between device and user coordinates. |
| virtual void cvtDevToUser(double dx, double dy, double *ux, double *uy); |
| virtual void cvtUserToDev(double ux, double uy, int *dx, int *dy); |
| |
| const double *getDefCTM() const { return defCTM; } |
| const double *getDefICTM() const { return defICTM; } |
| |
| //----- save/restore graphics state |
| virtual void saveState(GfxState * /*state*/) { } |
| virtual void restoreState(GfxState * /*state*/) { } |
| |
| //----- update graphics state |
| virtual void updateAll(GfxState *state); |
| |
| // Update the Current Transformation Matrix (CTM), i.e., the new matrix |
| // given in m11, ..., m32 is combined with the current value of the CTM. |
| // At the same time, when this method is called, state->getCTM() already |
| // contains the correct new CTM, so one may as well replace the |
| // CTM of the renderer with that. |
| virtual void updateCTM(GfxState * /*state*/, double /*m11*/, double /*m12*/, double /*m21*/, double /*m22*/, double /*m31*/, double /*m32*/) { } |
| virtual void updateLineDash(GfxState * /*state*/) { } |
| virtual void updateFlatness(GfxState * /*state*/) { } |
| virtual void updateLineJoin(GfxState * /*state*/) { } |
| virtual void updateLineCap(GfxState * /*state*/) { } |
| virtual void updateMiterLimit(GfxState * /*state*/) { } |
| virtual void updateLineWidth(GfxState * /*state*/) { } |
| virtual void updateStrokeAdjust(GfxState * /*state*/) { } |
| virtual void updateAlphaIsShape(GfxState * /*state*/) { } |
| virtual void updateTextKnockout(GfxState * /*state*/) { } |
| virtual void updateFillColorSpace(GfxState * /*state*/) { } |
| virtual void updateStrokeColorSpace(GfxState * /*state*/) { } |
| virtual void updateFillColor(GfxState * /*state*/) { } |
| virtual void updateStrokeColor(GfxState * /*state*/) { } |
| virtual void updateBlendMode(GfxState * /*state*/) { } |
| virtual void updateFillOpacity(GfxState * /*state*/) { } |
| virtual void updateStrokeOpacity(GfxState * /*state*/) { } |
| virtual void updatePatternOpacity(GfxState * /*state*/) { } |
| virtual void clearPatternOpacity(GfxState * /*state*/) { } |
| virtual void updateFillOverprint(GfxState * /*state*/) { } |
| virtual void updateStrokeOverprint(GfxState * /*state*/) { } |
| virtual void updateOverprintMode(GfxState * /*state*/) { } |
| virtual void updateTransfer(GfxState * /*state*/) { } |
| virtual void updateFillColorStop(GfxState * /*state*/, double /*offset*/) { } |
| |
| //----- update text state |
| virtual void updateFont(GfxState * /*state*/) { } |
| virtual void updateTextMat(GfxState * /*state*/) { } |
| virtual void updateCharSpace(GfxState * /*state*/) { } |
| virtual void updateRender(GfxState * /*state*/) { } |
| virtual void updateRise(GfxState * /*state*/) { } |
| virtual void updateWordSpace(GfxState * /*state*/) { } |
| virtual void updateHorizScaling(GfxState * /*state*/) { } |
| virtual void updateTextPos(GfxState * /*state*/) { } |
| virtual void updateTextShift(GfxState * /*state*/, double /*shift*/) { } |
| virtual void saveTextPos(GfxState * /*state*/) { } |
| virtual void restoreTextPos(GfxState * /*state*/) { } |
| |
| //----- path painting |
| virtual void stroke(GfxState * /*state*/) { } |
| virtual void fill(GfxState * /*state*/) { } |
| virtual void eoFill(GfxState * /*state*/) { } |
| virtual bool tilingPatternFill(GfxState * /*state*/, Gfx * /*gfx*/, Catalog * /*cat*/, GfxTilingPattern * /*tPat*/, const double * /*mat*/, int /*x0*/, int /*y0*/, int /*x1*/, int /*y1*/, double /*xStep*/, double /*yStep*/) |
| { |
| return false; |
| } |
| virtual bool functionShadedFill(GfxState * /*state*/, GfxFunctionShading * /*shading*/) { return false; } |
| virtual bool axialShadedFill(GfxState * /*state*/, GfxAxialShading * /*shading*/, double /*tMin*/, double /*tMax*/) { return false; } |
| virtual bool axialShadedSupportExtend(GfxState * /*state*/, GfxAxialShading * /*shading*/) { return false; } |
| virtual bool radialShadedFill(GfxState * /*state*/, GfxRadialShading * /*shading*/, double /*sMin*/, double /*sMax*/) { return false; } |
| virtual bool radialShadedSupportExtend(GfxState * /*state*/, GfxRadialShading * /*shading*/) { return false; } |
| virtual bool gouraudTriangleShadedFill(GfxState *state, GfxGouraudTriangleShading *shading) { return false; } |
| virtual bool patchMeshShadedFill(GfxState *state, GfxPatchMeshShading *shading) { return false; } |
| |
| //----- path clipping |
| |
| // Update the clipping path. The new path is the intersection of the old path |
| // with the path given in 'state'. |
| // Additionally, set the clipping mode to the 'nonzero winding number rule'. |
| // That is, a point is inside the clipping region if its winding number |
| // with respect to the clipping path is nonzero. |
| virtual void clip(GfxState * /*state*/) { } |
| |
| // Update the clipping path. The new path is the intersection of the old path |
| // with the path given in 'state'. |
| // Additionally, set the clipping mode to the 'even-odd rule'. That is, a point is |
| // inside the clipping region if a ray from it to infinity will cross the clipping |
| // path an odd number of times (disregarding the path orientation). |
| virtual void eoClip(GfxState * /*state*/) { } |
| |
| // Update the clipping path. Unlike for the previous two methods, the clipping region |
| // is not the region surrounded by the path in 'state', but rather the path itself, |
| // rendered with the current pen settings. |
| virtual void clipToStrokePath(GfxState * /*state*/) { } |
| |
| //----- text drawing |
| virtual void beginStringOp(GfxState * /*state*/) { } |
| virtual void endStringOp(GfxState * /*state*/) { } |
| virtual void beginString(GfxState * /*state*/, const GooString * /*s*/) { } |
| virtual void endString(GfxState * /*state*/) { } |
| |
| // Draw one glyph at a specified position |
| // |
| // Arguments are: |
| // CharCode code: This is the character code in the content stream. It needs to be mapped back to a glyph index. |
| // int nBytes: The text strings in the content stream can consists of either 8-bit or 16-bit |
| // character codes depending on the font. nBytes is the number of bytes in the character code. |
| // Unicode *u: The UCS-4 mapping used for text extraction (TextOutputDev). |
| // int uLen: The number of unicode entries in u. Usually '1', for a single character, |
| // but it may also have larger values, for example for ligatures. |
| virtual void drawChar(GfxState * /*state*/, double /*x*/, double /*y*/, double /*dx*/, double /*dy*/, double /*originX*/, double /*originY*/, CharCode /*code*/, int /*nBytes*/, const Unicode * /*u*/, int /*uLen*/) { } |
| virtual void drawString(GfxState * /*state*/, const GooString * /*s*/) { } |
| virtual bool beginType3Char(GfxState * /*state*/, double /*x*/, double /*y*/, double /*dx*/, double /*dy*/, CharCode /*code*/, const Unicode * /*u*/, int /*uLen*/); |
| virtual void endType3Char(GfxState * /*state*/) { } |
| virtual void beginTextObject(GfxState * /*state*/) { } |
| virtual void endTextObject(GfxState * /*state*/) { } |
| virtual void incCharCount(int /*nChars*/) { } |
| virtual void beginActualText(GfxState * /*state*/, const GooString * /*text*/) { } |
| virtual void endActualText(GfxState * /*state*/) { } |
| |
| //----- image drawing |
| // Draw an image mask. An image mask is a one-bit-per-pixel image, where each pixel |
| // can only be 'fill color' or 'transparent'. |
| // |
| // If 'invert' is false, a sample value of 0 marks the page with the current color, |
| // and a 1 leaves the previous contents unchanged. If 'invert' is true, these meanings are reversed. |
| virtual void drawImageMask(GfxState *state, Object *ref, Stream *str, int width, int height, bool invert, bool interpolate, bool inlineImg); |
| virtual void setSoftMaskFromImageMask(GfxState *state, Object *ref, Stream *str, int width, int height, bool invert, bool inlineImg, double *baseMatrix); |
| virtual void unsetSoftMaskFromImageMask(GfxState *state, double *baseMatrix); |
| virtual void drawImage(GfxState *state, Object *ref, Stream *str, int width, int height, GfxImageColorMap *colorMap, bool interpolate, const int *maskColors, bool inlineImg); |
| virtual void drawMaskedImage(GfxState *state, Object *ref, Stream *str, int width, int height, GfxImageColorMap *colorMap, bool interpolate, Stream *maskStr, int maskWidth, int maskHeight, bool maskInvert, bool maskInterpolate); |
| virtual void drawSoftMaskedImage(GfxState *state, Object *ref, Stream *str, int width, int height, GfxImageColorMap *colorMap, bool interpolate, Stream *maskStr, int maskWidth, int maskHeight, GfxImageColorMap *maskColorMap, |
| bool maskInterpolate); |
| |
| //----- grouping operators |
| |
| virtual void endMarkedContent(GfxState *state); |
| virtual void beginMarkedContent(const char *name, Dict *properties); |
| virtual void markPoint(const char *name); |
| virtual void markPoint(const char *name, Dict *properties); |
| |
| #ifdef OPI_SUPPORT |
| //----- OPI functions |
| virtual void opiBegin(GfxState *state, Dict *opiDict); |
| virtual void opiEnd(GfxState *state, Dict *opiDict); |
| #endif |
| |
| //----- Type 3 font operators |
| virtual void type3D0(GfxState * /*state*/, double /*wx*/, double /*wy*/) { } |
| virtual void type3D1(GfxState * /*state*/, double /*wx*/, double /*wy*/, double /*llx*/, double /*lly*/, double /*urx*/, double /*ury*/) { } |
| |
| //----- form XObjects |
| virtual void beginForm(Object * /* obj */, Ref /*id*/) { } |
| virtual void drawForm(Ref /*id*/) { } |
| virtual void endForm(Object * /* obj */, Ref /*id*/) { } |
| |
| //----- PostScript XObjects |
| virtual void psXObject(Stream * /*psStream*/, Stream * /*level1Stream*/) { } |
| |
| //----- Profiling |
| void startProfile(); |
| std::unordered_map<std::string, ProfileData> *getProfileHash() const { return profileHash.get(); } |
| std::unique_ptr<std::unordered_map<std::string, ProfileData>> endProfile(); |
| |
| //----- transparency groups and soft masks |
| virtual bool checkTransparencyGroup(GfxState * /*state*/, bool /*knockout*/) { return true; } |
| virtual void beginTransparencyGroup(GfxState * /*state*/, const double * /*bbox*/, GfxColorSpace * /*blendingColorSpace*/, bool /*isolated*/, bool /*knockout*/, bool /*forSoftMask*/) { } |
| virtual void endTransparencyGroup(GfxState * /*state*/) { } |
| virtual void paintTransparencyGroup(GfxState * /*state*/, const double * /*bbox*/) { } |
| virtual void setSoftMask(GfxState * /*state*/, const double * /*bbox*/, bool /*alpha*/, Function * /*transferFunc*/, GfxColor * /*backdropColor*/) { } |
| virtual void clearSoftMask(GfxState * /*state*/) { } |
| |
| //----- links |
| virtual void processLink(AnnotLink * /*link*/) { } |
| |
| #if 1 //~tmp: turn off anti-aliasing temporarily |
| virtual bool getVectorAntialias() { return false; } |
| virtual void setVectorAntialias(bool /*vaa*/) { } |
| #endif |
| |
| #ifdef USE_CMS |
| void setDisplayProfile(const GfxLCMSProfilePtr &profile) { displayprofile = profile; } |
| GfxLCMSProfilePtr getDisplayProfile() const { return displayprofile; } |
| void setDefaultGrayProfile(const GfxLCMSProfilePtr &profile) { defaultGrayProfile = profile; } |
| GfxLCMSProfilePtr getDefaultGrayProfile() const { return defaultGrayProfile; } |
| void setDefaultRGBProfile(const GfxLCMSProfilePtr &profile) { defaultRGBProfile = profile; } |
| GfxLCMSProfilePtr getDefaultRGBProfile() const { return defaultRGBProfile; } |
| void setDefaultCMYKProfile(const GfxLCMSProfilePtr &profile) { defaultCMYKProfile = profile; } |
| GfxLCMSProfilePtr getDefaultCMYKProfile() const { return defaultCMYKProfile; } |
| |
| PopplerCache<Ref, GfxICCBasedColorSpace> *getIccColorSpaceCache() { return &iccColorSpaceCache; } |
| #endif |
| |
| private: |
| double defCTM[6]; // default coordinate transform matrix |
| double defICTM[6]; // inverse of default CTM |
| std::unique_ptr<std::unordered_map<std::string, ProfileData>> profileHash; |
| |
| #ifdef USE_CMS |
| GfxLCMSProfilePtr displayprofile; |
| GfxLCMSProfilePtr defaultGrayProfile; |
| GfxLCMSProfilePtr defaultRGBProfile; |
| GfxLCMSProfilePtr defaultCMYKProfile; |
| |
| PopplerCache<Ref, GfxICCBasedColorSpace> iccColorSpaceCache; |
| #endif |
| }; |
| |
| #endif |
