| /* |
| ******************************************************************************* |
| * |
| * Copyright (C) 1999-2001, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| * |
| ******************************************************************************* |
| * file name: GDIFontInstance.cpp |
| * |
| * created on: 08/09/2000 |
| * created by: Eric R. Mader |
| */ |
| |
| #include <windows.h> |
| |
| #include "layout/LETypes.h" |
| #include "layout/LESwaps.h" |
| |
| #include "RenderingFontInstance.h" |
| #include "GDIFontInstance.h" |
| #include "sfnt.h" |
| #include "cmaps.h" |
| |
| GDIFontInstance::GDIFontInstance(HDC hdc, TCHAR *faceName, le_int16 pointSize, RFIErrorCode &status) |
| : fHdc(hdc), fFont(NULL), RenderingFontInstance(hdc, pointSize) |
| { |
| LOGFONT lf; |
| FLOAT dpiX, dpiY; |
| POINT pt; |
| OUTLINETEXTMETRIC otm; |
| |
| if (LE_FAILURE(status)) { |
| return; |
| } |
| |
| SaveDC(hdc); |
| |
| SetGraphicsMode(hdc, GM_ADVANCED); |
| ModifyWorldTransform(hdc, NULL, MWT_IDENTITY); |
| SetViewportOrgEx(hdc, 0, 0, NULL); |
| SetWindowOrgEx(hdc, 0, 0, NULL); |
| |
| dpiX = (FLOAT) GetDeviceCaps(hdc, LOGPIXELSX); |
| dpiY = (FLOAT) GetDeviceCaps(hdc, LOGPIXELSY); |
| |
| #if 1 |
| pt.x = (int) (pointSize * dpiX / 72); |
| pt.y = (int) (pointSize * dpiY / 72); |
| |
| DPtoLP(hdc, &pt, 1); |
| #else |
| pt.x = pt.y = pointSize; |
| #endif |
| |
| lf.lfHeight = - pt.y; |
| lf.lfWidth = 0; |
| lf.lfEscapement = 0; |
| lf.lfOrientation = 0; |
| lf.lfWeight = 0; |
| lf.lfItalic = 0; |
| lf.lfUnderline = 0; |
| lf.lfStrikeOut = 0; |
| lf.lfCharSet = DEFAULT_CHARSET; |
| lf.lfOutPrecision = 0; |
| lf.lfClipPrecision = 0; |
| lf.lfQuality = 0; |
| lf.lfPitchAndFamily = 0; |
| |
| lstrcpy(lf.lfFaceName, faceName); |
| |
| fFont = CreateFontIndirect(&lf); |
| |
| if (fFont == NULL) { |
| status = RFI_FONT_FILE_NOT_FOUND_ERROR; |
| return; |
| } |
| |
| SelectObject(hdc, fFont); |
| |
| UINT ret = GetOutlineTextMetrics(hdc, sizeof otm, &otm); |
| |
| if (ret == 0) { |
| status = RFI_MISSING_FONT_TABLE_ERROR; |
| goto restore; |
| } |
| |
| fUnitsPerEM = otm.otmEMSquare; |
| fAscent = otm.otmTextMetrics.tmAscent; |
| fDescent = otm.otmTextMetrics.tmDescent; |
| fLeading = otm.otmTextMetrics.tmExternalLeading; |
| |
| status = initMapper(); |
| |
| if (LE_FAILURE(status)) { |
| goto restore; |
| } |
| |
| status = initFontTableCache(); |
| |
| restore: |
| RestoreDC(hdc, -1); |
| } |
| |
| GDIFontInstance::GDIFontInstance(HDC hdc, const char *faceName, le_int16 pointSize, RFIErrorCode &status) |
| : fHdc(hdc), fFont(NULL), RenderingFontInstance(hdc, pointSize) |
| { |
| LOGFONTA lf; |
| FLOAT dpiX, dpiY; |
| POINT pt; |
| OUTLINETEXTMETRIC otm; |
| |
| if (LE_FAILURE(status)) { |
| return; |
| } |
| |
| SaveDC(hdc); |
| |
| SetGraphicsMode(hdc, GM_ADVANCED); |
| ModifyWorldTransform(hdc, NULL, MWT_IDENTITY); |
| SetViewportOrgEx(hdc, 0, 0, NULL); |
| SetWindowOrgEx(hdc, 0, 0, NULL); |
| |
| dpiX = (FLOAT) GetDeviceCaps(hdc, LOGPIXELSX); |
| dpiY = (FLOAT) GetDeviceCaps(hdc, LOGPIXELSY); |
| |
| fDeviceScaleX = dpiX / 72; |
| fDeviceScaleY = dpiY / 72; |
| |
| #if 1 |
| pt.x = (int) (pointSize * fDeviceScaleX); |
| pt.y = (int) (pointSize * fDeviceScaleY); |
| |
| DPtoLP(hdc, &pt, 1); |
| #else |
| pt.x = pt.y = pointSize; |
| #endif |
| |
| lf.lfHeight = - pt.y; |
| lf.lfWidth = 0; |
| lf.lfEscapement = 0; |
| lf.lfOrientation = 0; |
| lf.lfWeight = 0; |
| lf.lfItalic = 0; |
| lf.lfUnderline = 0; |
| lf.lfStrikeOut = 0; |
| lf.lfCharSet = DEFAULT_CHARSET; |
| lf.lfOutPrecision = 0; |
| lf.lfClipPrecision = 0; |
| lf.lfQuality = 0; |
| lf.lfPitchAndFamily = 0; |
| |
| strcpy(lf.lfFaceName, faceName); |
| |
| fFont = CreateFontIndirectA(&lf); |
| |
| if (fFont == NULL) { |
| status = RFI_FONT_FILE_NOT_FOUND_ERROR; |
| return; |
| } |
| |
| SelectObject(hdc, fFont); |
| |
| UINT ret = GetOutlineTextMetrics(hdc, sizeof otm, &otm); |
| |
| if (ret == 0) { |
| status = RFI_MISSING_FONT_TABLE_ERROR; |
| goto restore; |
| } |
| |
| fUnitsPerEM = otm.otmEMSquare; |
| fAscent = otm.otmTextMetrics.tmAscent; |
| fDescent = otm.otmTextMetrics.tmDescent; |
| fLeading = otm.otmTextMetrics.tmExternalLeading; |
| |
| status = initMapper(); |
| |
| if (LE_FAILURE(status)) { |
| goto restore; |
| } |
| |
| status = initFontTableCache(); |
| |
| restore: |
| RestoreDC(hdc, -1); |
| } |
| |
| GDIFontInstance::~GDIFontInstance() |
| { |
| #if 0 |
| flushFontTableCache(); |
| delete[] fTableCache; |
| #endif |
| |
| if (fFont != NULL) { |
| // FIXME: call RemoveObject first? |
| DeleteObject(fFont); |
| } |
| } |
| |
| const void *GDIFontInstance::readFontTable(LETag tableTag) const |
| { |
| DWORD stag = SWAPL(tableTag); |
| DWORD len = GetFontData(fHdc, stag, 0, NULL, 0); |
| void *result = NULL; |
| |
| if (len != GDI_ERROR) { |
| result = new char[len]; |
| GetFontData(fHdc, stag, 0, result, len); |
| } |
| |
| return result; |
| } |
| |
| void GDIFontInstance::getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const |
| { |
| advance.fX = 0; |
| advance.fY = 0; |
| |
| if (glyph == 0xFFFE || glyph == 0xFFFF) { |
| return; |
| } |
| |
| GLYPHMETRICS metrics; |
| DWORD result; |
| MAT2 identity = {{0, 1}, {0, 0}, {0, 0}, {0, 1}}; |
| |
| result = GetGlyphOutline(fHdc, glyph, GGO_GLYPH_INDEX | GGO_METRICS, &metrics, 0, NULL, &identity); |
| |
| if (result == GDI_ERROR) { |
| return; |
| } |
| |
| advance.fX = metrics.gmCellIncX; |
| return; |
| } |
| |
| le_bool GDIFontInstance::getGlyphPoint(LEGlyphID glyph, le_int32 pointNumber, LEPoint &point) const |
| { |
| #if 0 |
| hsFixedPoint2 pt; |
| le_bool result; |
| |
| result = fFontInstance->getGlyphPoint(glyph, pointNumber, pt); |
| |
| if (result) { |
| point.fX = xUnitsToPoints(pt.fX); |
| point.fY = yUnitsToPoints(pt.fY); |
| } |
| |
| return result; |
| #else |
| return false; |
| #endif |
| } |
| |
| void GDIFontInstance::drawGlyphs(void *surface, LEGlyphID *glyphs, le_uint32 count, le_int32 *dx, |
| le_int32 x, le_int32 y, le_int32 width, le_int32 height) const |
| { |
| HDC hdc = (HDC) surface; |
| RECT clip; |
| |
| clip.top = 0; |
| clip.left = 0; |
| clip.bottom = height; |
| clip.right = width; |
| |
| ExtTextOut(hdc, x, y - fAscent, ETO_CLIPPED | ETO_GLYPH_INDEX, &clip, glyphs, count, (INT *) dx); |
| }; |