зеркало из https://github.com/mozilla/gecko-dev.git
Backed out 1 changesets (bug 1582749) for build bustage at /builds/worker/workspace/build/src/gfx/thebes/gfxFT2FontBase
Backed out changeset db3d77b313a0 (bug 1582749)
This commit is contained in:
Daniel Varga
Родитель
95c42fceb9
Коммит
c8913746b5
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@ -138,14 +138,6 @@ static void SnapLineToPixels(gfxFloat& aOffset, gfxFloat& aSize) {
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aSize = snappedSize;
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}
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static inline gfxRect ScaleGlyphBounds(const IntRect& aBounds,
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gfxFloat aScale) {
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return gfxRect(FLOAT_FROM_26_6(aBounds.x) * aScale,
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FLOAT_FROM_26_6(aBounds.y) * aScale,
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FLOAT_FROM_26_6(aBounds.width) * aScale,
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FLOAT_FROM_26_6(aBounds.height) * aScale);
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}
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/**
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* Get extents for a simple character representable by a single glyph.
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* The return value is the glyph id of that glyph or zero if no such glyph
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@ -156,14 +148,10 @@ uint32_t gfxFT2FontBase::GetCharExtents(char aChar, gfxFloat* aWidth,
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gfxRect* aBounds) {
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FT_UInt gid = GetGlyph(aChar);
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int32_t width;
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IntRect bounds;
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if (gid && GetFTGlyphExtents(gid, &width, &bounds)) {
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if (gid && GetFTGlyphExtents(gid, &width, aBounds)) {
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if (aWidth) {
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*aWidth = FLOAT_FROM_16_16(width);
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}
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if (aBounds) {
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*aBounds = ScaleGlyphBounds(bounds, GetAdjustedSize() / mFTSize);
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}
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return gid;
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} else {
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return 0;
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@ -520,7 +508,7 @@ FT_Vector gfxFT2FontBase::GetEmboldenStrength(FT_Face aFace) {
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}
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bool gfxFT2FontBase::GetFTGlyphExtents(uint16_t aGID, int32_t* aAdvance,
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IntRect* aBounds) {
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gfxRect* aBounds) {
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gfxFT2LockedFace face(this);
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MOZ_ASSERT(face.get());
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if (!face.get()) {
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@ -529,7 +517,8 @@ bool gfxFT2FontBase::GetFTGlyphExtents(uint16_t aGID, int32_t* aAdvance,
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return false;
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}
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if (Factory::LoadFTGlyph(face.get(), aGID, mFTLoadFlags) != FT_Err_Ok) {
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FT_Error ftError = Factory::LoadFTGlyph(face.get(), aGID, mFTLoadFlags);
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if (ftError != FT_Err_Ok) {
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// FT_Face was somehow broken/invalid? Don't try to access glyph slot.
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// This probably shouldn't happen, but does: see bug 1440938.
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NS_WARNING("failed to load glyph!");
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@ -583,56 +572,36 @@ bool gfxFT2FontBase::GetFTGlyphExtents(uint16_t aGID, int32_t* aAdvance,
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x2 = (x2 + 63) & -64;
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y2 = (y2 + 63) & -64;
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}
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*aBounds = IntRect(x, y, x2 - x, y2 - y);
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*aBounds = gfxRect(FLOAT_FROM_26_6(x) * extentsScale,
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FLOAT_FROM_26_6(y) * extentsScale,
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FLOAT_FROM_26_6(x2 - x) * extentsScale,
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FLOAT_FROM_26_6(y2 - y) * extentsScale);
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}
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return true;
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}
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/**
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* Get the cached glyph metrics for the glyph id if available. Otherwise, query
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* FreeType for the glyph extents and initialize the glyph metrics.
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*/
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const gfxFT2FontBase::GlyphMetrics& gfxFT2FontBase::GetCachedGlyphMetrics(
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uint16_t aGID) {
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if (!mGlyphMetrics) {
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mGlyphMetrics =
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mozilla::MakeUnique<nsDataHashtable<nsUint32HashKey, GlyphMetrics>>(
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128);
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}
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if (const GlyphMetrics* metrics = mGlyphMetrics->GetValue(aGID)) {
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return *metrics;
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}
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GlyphMetrics& metrics = mGlyphMetrics->GetOrInsert(aGID);
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IntRect bounds;
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if (GetFTGlyphExtents(aGID, &metrics.mAdvance, &bounds)) {
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metrics.SetBounds(bounds);
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}
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return metrics;
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}
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int32_t gfxFT2FontBase::GetGlyphWidth(uint16_t aGID) {
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return GetCachedGlyphMetrics(aGID).mAdvance;
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if (!mGlyphWidths) {
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mGlyphWidths =
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mozilla::MakeUnique<nsDataHashtable<nsUint32HashKey, int32_t>>(128);
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}
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int32_t width;
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if (mGlyphWidths->Get(aGID, &width)) {
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return width;
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}
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if (!GetFTGlyphExtents(aGID, &width)) {
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width = 0;
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}
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mGlyphWidths->Put(aGID, width);
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return width;
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}
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bool gfxFT2FontBase::GetGlyphBounds(uint16_t aGID, gfxRect* aBounds,
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bool aTight) {
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const GlyphMetrics& metrics = GetCachedGlyphMetrics(aGID);
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if (!metrics.HasValidBounds()) {
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return false;
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}
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// Check if there are cached bounds and use those if available. Otherwise,
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// fall back to directly querying the glyph extents.
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IntRect bounds;
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if (metrics.HasCachedBounds()) {
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bounds = metrics.GetBounds();
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} else if (!GetFTGlyphExtents(aGID, nullptr, &bounds)) {
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return false;
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}
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// The bounds are stored unscaled, so must be scaled to the adjusted size.
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*aBounds = ScaleGlyphBounds(bounds, GetAdjustedSize() / mFTSize);
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return true;
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return GetFTGlyphExtents(aGID, nullptr, aBounds);
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}
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// For variation fonts, figure out the variation coordinates to be applied
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@ -48,7 +48,7 @@ class gfxFT2FontBase : public gfxFont {
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// Get advance (and optionally bounds) of a single glyph from FreeType,
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// and return true, or return false if we failed.
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bool GetFTGlyphExtents(uint16_t aGID, int32_t* aWidth,
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mozilla::gfx::IntRect* aBounds = nullptr);
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gfxRect* aBounds = nullptr);
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protected:
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void InitMetrics();
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@ -70,50 +70,7 @@ class gfxFT2FontBase : public gfxFont {
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// range reported by the face.
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nsTArray<FT_Fixed> mCoords;
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// Store cached glyph metrics for reasonably small glyph sizes. The bounds
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// are stored unscaled to losslessly compress 26.6 fixed point to an int16_t.
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// Larger glyphs are handled directly via GetFTGlyphExtents.
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struct GlyphMetrics {
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// Set the X coord to INT16_MIN to signal the bounds are invalid, or
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// INT16_MAX to signal that the bounds would overflow an int16_t.
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enum { INVALID = INT16_MIN, OVERFLOW = INT16_MAX };
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GlyphMetrics() : mAdvance(0), mX(INVALID), mY(0), mWidth(0), mHeight(0) {}
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bool HasValidBounds() const { return mX != INVALID; }
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bool HasCachedBounds() const { return mX != OVERFLOW; }
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// If the bounds can fit in an int16_t, set them. Otherwise, leave the
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// bounds invalid to signal that GetFTGlyphExtents should be queried
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// directly.
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void SetBounds(const mozilla::gfx::IntRect& aBounds) {
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if (aBounds.x > INT16_MIN && aBounds.x < INT16_MAX &&
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aBounds.y > INT16_MIN && aBounds.y < INT16_MAX &&
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aBounds.width <= UINT16_MAX && aBounds.height <= UINT16_MAX) {
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mX = aBounds.x;
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mY = aBounds.y;
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mWidth = aBounds.width;
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mHeight = aBounds.height;
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} else {
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mX = OVERFLOW;
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}
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}
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mozilla::gfx::IntRect GetBounds() const {
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return mozilla::gfx::IntRect(mX, mY, mWidth, mHeight);
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}
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int32_t mAdvance;
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int16_t mX;
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int16_t mY;
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uint16_t mWidth;
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uint16_t mHeight;
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};
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const GlyphMetrics& GetCachedGlyphMetrics(uint16_t aGID);
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mozilla::UniquePtr<nsDataHashtable<nsUint32HashKey, GlyphMetrics>>
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mGlyphMetrics;
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mozilla::UniquePtr<nsDataHashtable<nsUint32HashKey, int32_t>> mGlyphWidths;
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};
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// Helper classes used for clearing out user font data when FT font
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