зеркало из https://github.com/mozilla/gecko-dev.git
Bug 711063 - Part 3: Adjust font code to be compatible with Azure wrapper. r=joedrew
This commit is contained in:
Bas Schouten
Родитель
274789adbe
Коммит
f517d38aa8
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@ -76,7 +76,10 @@
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#include "nsCRT.h"
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#include <algorithm>
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using namespace mozilla;
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using namespace mozilla::gfx;
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gfxFontCache *gfxFontCache::gGlobalCache = nsnull;
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@ -1149,6 +1152,45 @@ struct GlyphBuffer {
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#undef GLYPH_BUFFER_SIZE
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};
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struct GlyphBufferAzure {
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#define GLYPH_BUFFER_SIZE (2048/sizeof(Glyph))
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Glyph mGlyphBuffer[GLYPH_BUFFER_SIZE];
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unsigned int mNumGlyphs;
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GlyphBufferAzure()
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: mNumGlyphs(0) { }
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Glyph *AppendGlyph() {
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return &mGlyphBuffer[mNumGlyphs++];
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}
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void Flush(DrawTarget *aDT, Pattern &aPattern, ScaledFont *aFont,
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bool aDrawToPath, bool aReverse, bool aFinish = false)
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{
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// Ensure there's enough room for a glyph to be added to the buffer
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if (!aFinish && mNumGlyphs < GLYPH_BUFFER_SIZE || !mNumGlyphs) {
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return;
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}
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if (aReverse) {
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Glyph *begin = &mGlyphBuffer[0];
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Glyph *end = &mGlyphBuffer[mNumGlyphs];
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std::reverse(begin, end);
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}
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NS_ASSERTION(!aDrawToPath, "Not supported yet.");
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gfx::GlyphBuffer buf;
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buf.mGlyphs = mGlyphBuffer;
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buf.mNumGlyphs = mNumGlyphs;
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aDT->FillGlyphs(aFont, buf, aPattern);
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mNumGlyphs = 0;
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}
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#undef GLYPH_BUFFER_SIZE
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};
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// Bug 674909. When synthetic bolding text by drawing twice, need to
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// render using a pixel offset in device pixels, otherwise text
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// doesn't appear bolded, it appears as if a bad text shadow exists
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@ -1206,137 +1248,308 @@ gfxFont::Draw(gfxTextRun *aTextRun, PRUint32 aStart, PRUint32 aEnd,
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double x = aPt->x;
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double y = aPt->y;
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bool success = SetupCairoFont(aContext);
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if (NS_UNLIKELY(!success))
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return;
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GlyphBuffer glyphs;
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cairo_glyph_t *glyph;
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cairo_t *cr = aContext->GetCairo();
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RefPtr<DrawTarget> dt = aContext->GetDrawTarget();
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if (aSpacing) {
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x += direction*aSpacing[0].mBefore;
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}
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for (i = aStart; i < aEnd; ++i) {
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const gfxTextRun::CompressedGlyph *glyphData = &charGlyphs[i];
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if (glyphData->IsSimpleGlyph()) {
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glyph = glyphs.AppendGlyph();
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glyph->index = glyphData->GetSimpleGlyph();
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double advance = glyphData->GetSimpleAdvance();
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// Perhaps we should put a scale in the cairo context instead of
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// doing this scaling here...
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// Multiplying by the reciprocal may introduce tiny error here,
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// but we assume cairo is going to round coordinates at some stage
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// and this is faster
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double glyphX;
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if (isRTL) {
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x -= advance;
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glyphX = x;
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} else {
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glyphX = x;
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x += advance;
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}
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glyph->x = ToDeviceUnits(glyphX, devUnitsPerAppUnit);
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glyph->y = ToDeviceUnits(y, devUnitsPerAppUnit);
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glyphs.Flush(cr, aDrawToPath, isRTL);
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RefPtr<ScaledFont> scaledFont;
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gfxRGBA color;
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ColorPattern colPat(Color(0, 0, 0, 0));
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if (aContext->IsCairo()) {
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bool success = SetupCairoFont(aContext);
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if (NS_UNLIKELY(!success))
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return;
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::GlyphBuffer glyphs;
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cairo_glyph_t *glyph;
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if (aSpacing) {
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x += direction*aSpacing[0].mBefore;
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}
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for (i = aStart; i < aEnd; ++i) {
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const gfxTextRun::CompressedGlyph *glyphData = &charGlyphs[i];
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if (glyphData->IsSimpleGlyph()) {
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glyph = glyphs.AppendGlyph();
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glyph->index = glyphData->GetSimpleGlyph();
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double advance = glyphData->GetSimpleAdvance();
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// Perhaps we should put a scale in the cairo context instead of
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// doing this scaling here...
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// Multiplying by the reciprocal may introduce tiny error here,
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// but we assume cairo is going to round coordinates at some stage
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// and this is faster
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double glyphX;
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if (isRTL) {
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x -= advance;
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glyphX = x;
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} else {
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glyphX = x;
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x += advance;
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}
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glyph->x = ToDeviceUnits(glyphX, devUnitsPerAppUnit);
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glyph->y = ToDeviceUnits(y, devUnitsPerAppUnit);
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glyphs.Flush(cr, aDrawToPath, isRTL);
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// synthetic bolding by multi-striking with 1-pixel offsets
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// at least once, more if there's room (large font sizes)
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if (IsSyntheticBold()) {
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double strikeOffset = synBoldOnePixelOffset;
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PRInt32 strikeCount = strikes;
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do {
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cairo_glyph_t *doubleglyph;
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doubleglyph = glyphs.AppendGlyph();
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doubleglyph->index = glyph->index;
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doubleglyph->x =
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ToDeviceUnits(glyphX + strikeOffset * appUnitsPerDevUnit,
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devUnitsPerAppUnit);
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doubleglyph->y = glyph->y;
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strikeOffset += synBoldOnePixelOffset;
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glyphs.Flush(cr, aDrawToPath, isRTL);
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} while (--strikeCount > 0);
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}
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} else {
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PRUint32 glyphCount = glyphData->GetGlyphCount();
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if (glyphCount > 0) {
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const gfxTextRun::DetailedGlyph *details =
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aTextRun->GetDetailedGlyphs(i);
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NS_ASSERTION(details, "detailedGlyph should not be missing!");
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for (PRUint32 j = 0; j < glyphCount; ++j, ++details) {
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double advance = details->mAdvance;
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if (glyphData->IsMissing()) {
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// default ignorable characters will have zero advance width.
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// we don't have to draw the hexbox for them
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if (!aDrawToPath && advance > 0) {
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double glyphX = x;
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if (isRTL) {
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glyphX -= advance;
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}
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gfxPoint pt(ToDeviceUnits(glyphX, devUnitsPerAppUnit),
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ToDeviceUnits(y, devUnitsPerAppUnit));
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gfxFloat advanceDevUnits = ToDeviceUnits(advance, devUnitsPerAppUnit);
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gfxFloat height = GetMetrics().maxAscent;
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gfxRect glyphRect(pt.x, pt.y - height, advanceDevUnits, height);
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gfxFontMissingGlyphs::DrawMissingGlyph(aContext,
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glyphRect,
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details->mGlyphID);
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}
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} else {
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glyph = glyphs.AppendGlyph();
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glyph->index = details->mGlyphID;
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double glyphX = x + details->mXOffset;
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if (isRTL) {
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glyphX -= advance;
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}
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glyph->x = ToDeviceUnits(glyphX, devUnitsPerAppUnit);
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glyph->y = ToDeviceUnits(y + details->mYOffset, devUnitsPerAppUnit);
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glyphs.Flush(cr, aDrawToPath, isRTL);
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// synthetic bolding by multi-striking with 1-pixel offsets
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// at least once, more if there's room (large font sizes)
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if (IsSyntheticBold()) {
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double strikeOffset = synBoldOnePixelOffset;
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PRInt32 strikeCount = strikes;
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do {
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cairo_glyph_t *doubleglyph;
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doubleglyph = glyphs.AppendGlyph();
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doubleglyph->index = glyph->index;
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doubleglyph->x =
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ToDeviceUnits(glyphX + strikeOffset * appUnitsPerDevUnit,
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devUnitsPerAppUnit);
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doubleglyph->y = glyph->y;
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strikeOffset += synBoldOnePixelOffset;
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glyphs.Flush(cr, aDrawToPath, isRTL);
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} while (--strikeCount > 0);
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}
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} else {
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PRUint32 glyphCount = glyphData->GetGlyphCount();
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if (glyphCount > 0) {
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const gfxTextRun::DetailedGlyph *details =
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aTextRun->GetDetailedGlyphs(i);
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NS_ASSERTION(details, "detailedGlyph should not be missing!");
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for (PRUint32 j = 0; j < glyphCount; ++j, ++details) {
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double advance = details->mAdvance;
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if (glyphData->IsMissing()) {
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// default ignorable characters will have zero advance width.
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// we don't have to draw the hexbox for them
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if (!aDrawToPath && advance > 0) {
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double glyphX = x;
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if (isRTL) {
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glyphX -= advance;
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}
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gfxPoint pt(ToDeviceUnits(glyphX, devUnitsPerAppUnit),
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ToDeviceUnits(y, devUnitsPerAppUnit));
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gfxFloat advanceDevUnits = ToDeviceUnits(advance, devUnitsPerAppUnit);
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gfxFloat height = GetMetrics().maxAscent;
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gfxRect glyphRect(pt.x, pt.y - height, advanceDevUnits, height);
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gfxFontMissingGlyphs::DrawMissingGlyph(aContext,
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glyphRect,
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details->mGlyphID);
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}
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} else {
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glyph = glyphs.AppendGlyph();
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glyph->index = details->mGlyphID;
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double glyphX = x + details->mXOffset;
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if (isRTL) {
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glyphX -= advance;
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}
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glyph->x = ToDeviceUnits(glyphX, devUnitsPerAppUnit);
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glyph->y = ToDeviceUnits(y + details->mYOffset, devUnitsPerAppUnit);
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glyphs.Flush(cr, aDrawToPath, isRTL);
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if (IsSyntheticBold()) {
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double strikeOffset = synBoldOnePixelOffset;
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PRInt32 strikeCount = strikes;
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do {
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cairo_glyph_t *doubleglyph;
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doubleglyph = glyphs.AppendGlyph();
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doubleglyph->index = glyph->index;
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doubleglyph->x =
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ToDeviceUnits(glyphX + strikeOffset *
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appUnitsPerDevUnit,
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devUnitsPerAppUnit);
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doubleglyph->y = glyph->y;
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strikeOffset += synBoldOnePixelOffset;
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glyphs.Flush(cr, aDrawToPath, isRTL);
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} while (--strikeCount > 0);
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}
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}
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x += direction*advance;
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}
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}
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if (IsSyntheticBold()) {
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double strikeOffset = synBoldOnePixelOffset;
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PRInt32 strikeCount = strikes;
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do {
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cairo_glyph_t *doubleglyph;
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doubleglyph = glyphs.AppendGlyph();
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doubleglyph->index = glyph->index;
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doubleglyph->x =
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ToDeviceUnits(glyphX + strikeOffset *
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appUnitsPerDevUnit,
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devUnitsPerAppUnit);
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doubleglyph->y = glyph->y;
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strikeOffset += synBoldOnePixelOffset;
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glyphs.Flush(cr, aDrawToPath, isRTL);
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} while (--strikeCount > 0);
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}
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}
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x += direction*advance;
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}
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}
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}
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if (aSpacing) {
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double space = aSpacing[i - aStart].mAfter;
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if (i + 1 < aEnd) {
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space += aSpacing[i + 1 - aStart].mBefore;
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}
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x += direction*space;
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}
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}
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if (gfxFontTestStore::CurrentStore()) {
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/* This assumes that the tests won't have anything that results
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* in more than GLYPH_BUFFER_SIZE glyphs. Do this before we
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* flush, since that'll blow away the num_glyphs.
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*/
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gfxFontTestStore::CurrentStore()->AddItem(GetName(),
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glyphs.mGlyphBuffer,
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glyphs.mNumGlyphs);
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}
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// draw any remaining glyphs
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glyphs.Flush(cr, aDrawToPath, isRTL, true);
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} else {
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if (aDrawToPath) {
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// This should never be reached with azure!
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NS_ERROR("Attempt at drawing to a Path to an Azure gfxContext.");
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return;
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}
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scaledFont =
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gfxPlatform::GetPlatform()->GetScaledFontForFont(this);
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if (!scaledFont || !aContext->GetDeviceColor(color)) {
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return;
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}
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colPat.mColor = ToColor(color);
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GlyphBufferAzure glyphs;
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Glyph *glyph;
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Matrix mat, matInv;
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Matrix oldMat = dt->GetTransform();
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if (mScaledFont) {
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cairo_matrix_t matrix;
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cairo_scaled_font_get_font_matrix(mScaledFont, &matrix);
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if (matrix.xy != 0) {
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// If this matrix applies a skew, which can happen when drawing
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// oblique fonts, we will set the DrawTarget matrix to apply the
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// skew. We'll need to move the glyphs by the inverse of the skew to
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// get the glyphs positioned correctly in the new device space
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// though, since the font matrix should only be applied to drawing
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// the glyphs, and not to their position.
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mat = ToMatrix(*reinterpret_cast<gfxMatrix*>(&matrix));
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mat._11 = mat._22 = 1.0;
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mat._21 /= mAdjustedSize;
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dt->SetTransform(mat * oldMat);
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matInv = mat;
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matInv.Invert();
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}
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}
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if (aSpacing) {
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double space = aSpacing[i - aStart].mAfter;
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if (i + 1 < aEnd) {
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space += aSpacing[i + 1 - aStart].mBefore;
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}
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x += direction*space;
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}
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if (aSpacing) {
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x += direction*aSpacing[0].mBefore;
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}
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for (i = aStart; i < aEnd; ++i) {
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const gfxTextRun::CompressedGlyph *glyphData = &charGlyphs[i];
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if (glyphData->IsSimpleGlyph()) {
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glyph = glyphs.AppendGlyph();
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glyph->mIndex = glyphData->GetSimpleGlyph();
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double advance = glyphData->GetSimpleAdvance();
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// Perhaps we should put a scale in the cairo context instead of
|
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// doing this scaling here...
|
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// Multiplying by the reciprocal may introduce tiny error here,
|
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// but we assume cairo is going to round coordinates at some stage
|
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// and this is faster
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double glyphX;
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if (isRTL) {
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x -= advance;
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glyphX = x;
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} else {
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glyphX = x;
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x += advance;
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}
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glyph->mPosition.x = ToDeviceUnits(glyphX, devUnitsPerAppUnit);
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glyph->mPosition.y = ToDeviceUnits(y, devUnitsPerAppUnit);
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glyph->mPosition = matInv * glyph->mPosition;
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glyphs.Flush(dt, colPat, scaledFont, aDrawToPath, isRTL);
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// synthetic bolding by multi-striking with 1-pixel offsets
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// at least once, more if there's room (large font sizes)
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if (IsSyntheticBold()) {
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double strikeOffset = synBoldOnePixelOffset;
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PRInt32 strikeCount = strikes;
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do {
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Glyph *doubleglyph;
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doubleglyph = glyphs.AppendGlyph();
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doubleglyph->mIndex = glyph->mIndex;
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doubleglyph->mPosition.x =
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ToDeviceUnits(glyphX + strikeOffset * appUnitsPerDevUnit,
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devUnitsPerAppUnit);
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doubleglyph->mPosition.y = glyph->mPosition.y;
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doubleglyph->mPosition = matInv * doubleglyph->mPosition;
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strikeOffset += synBoldOnePixelOffset;
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glyphs.Flush(dt, colPat, scaledFont, aDrawToPath, isRTL);
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} while (--strikeCount > 0);
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}
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} else {
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PRUint32 glyphCount = glyphData->GetGlyphCount();
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if (glyphCount > 0) {
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const gfxTextRun::DetailedGlyph *details =
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aTextRun->GetDetailedGlyphs(i);
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NS_ASSERTION(details, "detailedGlyph should not be missing!");
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for (PRUint32 j = 0; j < glyphCount; ++j, ++details) {
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double advance = details->mAdvance;
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if (glyphData->IsMissing()) {
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// default ignorable characters will have zero advance width.
|
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// we don't have to draw the hexbox for them
|
||||
if (!aDrawToPath && advance > 0) {
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double glyphX = x;
|
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if (isRTL) {
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glyphX -= advance;
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}
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gfxPoint pt(ToDeviceUnits(glyphX, devUnitsPerAppUnit),
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ToDeviceUnits(y, devUnitsPerAppUnit));
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gfxFloat advanceDevUnits = ToDeviceUnits(advance, devUnitsPerAppUnit);
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gfxFloat height = GetMetrics().maxAscent;
|
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gfxRect glyphRect(pt.x, pt.y - height, advanceDevUnits, height);
|
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gfxFontMissingGlyphs::DrawMissingGlyph(aContext,
|
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glyphRect,
|
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details->mGlyphID);
|
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}
|
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} else {
|
||||
glyph = glyphs.AppendGlyph();
|
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glyph->mIndex = details->mGlyphID;
|
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double glyphX = x + details->mXOffset;
|
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if (isRTL) {
|
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glyphX -= advance;
|
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}
|
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glyph->mPosition.x = ToDeviceUnits(glyphX, devUnitsPerAppUnit);
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glyph->mPosition.y = ToDeviceUnits(y + details->mYOffset, devUnitsPerAppUnit);
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glyph->mPosition = matInv * glyph->mPosition;
|
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glyphs.Flush(dt, colPat, scaledFont, aDrawToPath, isRTL);
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||||
|
||||
if (IsSyntheticBold()) {
|
||||
double strikeOffset = synBoldOnePixelOffset;
|
||||
PRInt32 strikeCount = strikes;
|
||||
do {
|
||||
Glyph *doubleglyph;
|
||||
doubleglyph = glyphs.AppendGlyph();
|
||||
doubleglyph->mIndex = glyph->mIndex;
|
||||
doubleglyph->mPosition.x =
|
||||
ToDeviceUnits(glyphX + strikeOffset *
|
||||
appUnitsPerDevUnit,
|
||||
devUnitsPerAppUnit);
|
||||
doubleglyph->mPosition.y = glyph->mPosition.y;
|
||||
strikeOffset += synBoldOnePixelOffset;
|
||||
doubleglyph->mPosition = matInv * doubleglyph->mPosition;
|
||||
glyphs.Flush(dt, colPat, scaledFont, aDrawToPath, isRTL);
|
||||
} while (--strikeCount > 0);
|
||||
}
|
||||
}
|
||||
x += direction*advance;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (aSpacing) {
|
||||
double space = aSpacing[i - aStart].mAfter;
|
||||
if (i + 1 < aEnd) {
|
||||
space += aSpacing[i + 1 - aStart].mBefore;
|
||||
}
|
||||
x += direction*space;
|
||||
}
|
||||
}
|
||||
|
||||
glyphs.Flush(dt, colPat, scaledFont, aDrawToPath, isRTL, true);
|
||||
|
||||
dt->SetTransform(oldMat);
|
||||
}
|
||||
|
||||
if (gfxFontTestStore::CurrentStore()) {
|
||||
/* This assumes that the tests won't have anything that results
|
||||
* in more than GLYPH_BUFFER_SIZE glyphs. Do this before we
|
||||
* flush, since that'll blow away the num_glyphs.
|
||||
*/
|
||||
gfxFontTestStore::CurrentStore()->AddItem(GetName(),
|
||||
glyphs.mGlyphBuffer,
|
||||
glyphs.mNumGlyphs);
|
||||
}
|
||||
|
||||
// draw any remaining glyphs
|
||||
glyphs.Flush(cr, aDrawToPath, isRTL, true);
|
||||
|
||||
*aPt = gfxPoint(x, y);
|
||||
}
|
||||
|
||||
|
|
|
|||
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