inline void GrStencilAndCoverTextContext::TextRun::appendGlyph(const SkGlyph& glyph,
const SkPoint& pos,
FallbackBlobBuilder* fallback) {
// Stick the glyphs we can't draw into the fallback text blob.
if (SkMask::kARGB32_Format == glyph.fMaskFormat) {
if (!fallback->isInitialized()) {
fallback->init(fFont, fTextRatio);
}
fallback->appendGlyph(glyph.getGlyphID(), pos);
} else {
fInstanceData->append(glyph.getGlyphID(), fTextInverseRatio * pos.x(),
fTextInverseRatio * pos.y());
}
}
bool SkScalerContext_DW::getColorGlyphRun(const SkGlyph& glyph,
IDWriteColorGlyphRunEnumerator** colorGlyph)
{
FLOAT advance = 0;
UINT16 glyphId = glyph.getGlyphID();
DWRITE_GLYPH_OFFSET offset;
offset.advanceOffset = 0.0f;
offset.ascenderOffset = 0.0f;
DWRITE_GLYPH_RUN run;
run.glyphCount = 1;
run.glyphAdvances = &advance;
run.fontFace = fTypeface->fDWriteFontFace.get();
run.fontEmSize = SkScalarToFloat(fTextSizeRender);
run.bidiLevel = 0;
run.glyphIndices = &glyphId;
run.isSideways = FALSE;
run.glyphOffsets = &offset;
HRESULT hr = fFactory2->TranslateColorGlyphRun(
0, 0, &run, nullptr, fMeasuringMode, &fXform, 0, colorGlyph);
if (hr == DWRITE_E_NOCOLOR) {
return false;
}
HRBM(hr, "Failed to translate color glyph run");
return true;
}
void SkScalerContext_CairoFT::generateImage(const SkGlyph& glyph)
{
SkASSERT(fScaledFont != nullptr);
CairoLockedFTFace faceLock(fScaledFont);
FT_Face face = faceLock.getFace();
FT_Error err = FT_Load_Glyph(face, glyph.getGlyphID(), fLoadGlyphFlags);
if (err != 0) {
memset(glyph.fImage, 0, glyph.rowBytes() * glyph.fHeight);
return;
}
prepareGlyph(face->glyph);
bool useLcdFilter =
face->glyph->format == FT_GLYPH_FORMAT_OUTLINE &&
isLCD(glyph) &&
gSetLcdFilter;
if (useLcdFilter) {
gSetLcdFilter(face->glyph->library, fLcdFilter);
}
generateGlyphImage(face, glyph);
if (useLcdFilter) {
gSetLcdFilter(face->glyph->library, FT_LCD_FILTER_NONE);
}
}
void GrTextUtils::BmpAppendGlyph(GrAtlasTextBlob* blob, int runIndex,
GrBatchFontCache* fontCache,
GrBatchTextStrike** strike, const SkGlyph& skGlyph,
int vx, int vy, GrColor color, GrFontScaler* scaler) {
if (!*strike) {
*strike = fontCache->getStrike(scaler);
}
GrGlyph::PackedID id = GrGlyph::Pack(skGlyph.getGlyphID(),
skGlyph.getSubXFixed(),
skGlyph.getSubYFixed(),
GrGlyph::kCoverage_MaskStyle);
GrGlyph* glyph = (*strike)->getGlyph(skGlyph, id, scaler);
if (!glyph) {
return;
}
int x = vx + glyph->fBounds.fLeft;
int y = vy + glyph->fBounds.fTop;
// keep them as ints until we've done the clip-test
int width = glyph->fBounds.width();
int height = glyph->fBounds.height();
SkRect r;
r.fLeft = SkIntToScalar(x);
r.fTop = SkIntToScalar(y);
r.fRight = r.fLeft + SkIntToScalar(width);
r.fBottom = r.fTop + SkIntToScalar(height);
blob->appendGlyph(runIndex, r, color, *strike, glyph, scaler, skGlyph,
SkIntToScalar(vx), SkIntToScalar(vy), 1.0f, false);
}
inline void GrStencilAndCoverTextContext::appendGlyph(const SkGlyph& glyph, const SkPoint& pos) {
// Stick the glyphs we can't draw into the fallback arrays.
if (SkMask::kARGB32_Format == glyph.fMaskFormat) {
fFallbackIndices.push_back(glyph.getGlyphID());
fFallbackPositions.push_back().set(fTextInverseRatio * pos.x(),
-fTextInverseRatio * pos.y());
} else {
// TODO: infer the reserve count from the text length.
if (!fDraw) {
fDraw = GrPathRangeDraw::Create(fGlyphs,
GrPathRendering::kTranslate_PathTransformType,
64);
}
float translate[] = { fTextInverseRatio * pos.x(), -fTextInverseRatio * pos.y() };
fDraw->append(glyph.getGlyphID(), translate);
}
}
inline void GrStencilAndCoverTextContext::appendGlyph(const SkGlyph& glyph, const SkPoint& pos) {
if (fQueuedGlyphCount >= fFallbackGlyphsIdx) {
SkASSERT(fQueuedGlyphCount == fFallbackGlyphsIdx);
this->flush();
}
// Stick the glyphs we can't draw at the end of the buffer, growing backwards.
int index = (SkMask::kARGB32_Format == glyph.fMaskFormat) ?
--fFallbackGlyphsIdx : fQueuedGlyphCount++;
fGlyphIndices[index] = glyph.getGlyphID();
fGlyphPositions[index].set(fTextInverseRatio * pos.x(), -fTextInverseRatio * pos.y());
}
void SkScalerContext_CairoFT::generateImage(const SkGlyph& glyph)
{
SkASSERT(fScaledFont != NULL);
CairoLockedFTFace faceLock(fScaledFont);
FT_Face face = faceLock.getFace();
FT_Error err = FT_Load_Glyph(face, glyph.getGlyphID(), fLoadGlyphFlags);
if (err != 0) {
memset(glyph.fImage, 0, glyph.rowBytes() * glyph.fHeight);
return;
}
generateGlyphImage(face, glyph);
}
void SkRandomScalerContext::generateImage(const SkGlyph& glyph) {
SkMask::Format format = (SkMask::Format)glyph.fMaskFormat;
switch (glyph.getGlyphID() % 4) {
case 0:
format = SkMask::kLCD16_Format;
break;
case 1:
format = SkMask::kA8_Format;
break;
case 2:
format = SkMask::kARGB32_Format;
break;
case 3:
format = SkMask::kBW_Format;
break;
}
const_cast<SkGlyph&>(glyph).fMaskFormat = format;
// if the format is ARGB, we just draw the glyph from path ourselves. Otherwise, we force
// our proxy context to generate the image from paths.
if (!fFakeIt) {
if (SkMask::kARGB32_Format == glyph.fMaskFormat) {
SkPath path;
fProxy->getPath(glyph, &path);
SkBitmap bm;
bm.installPixels(SkImageInfo::MakeN32Premul(glyph.fWidth, glyph.fHeight),
glyph.fImage, glyph.rowBytes());
bm.eraseColor(0);
SkCanvas canvas(bm);
canvas.translate(-SkIntToScalar(glyph.fLeft),
-SkIntToScalar(glyph.fTop));
canvas.drawPath(path, fFace->paint());
} else {
fProxy->forceGenerateImageFromPath();
fProxy->getImage(glyph);
fProxy->forceOffGenerateImageFromPath();
}
} else {
sk_bzero(glyph.fImage, glyph.computeImageSize());
}
}
void SkScalerContext_Ascender::generateImage(const SkGlyph& glyph)
{
aca_GlyphImageRec rec;
aca_Vector topLeft;
aca_Rasterize(glyph.getGlyphID(), fHandle, &rec, &topLeft);
const uint8_t* src = (const uint8_t*)rec.buffer;
uint8_t* dst = (uint8_t*)glyph.fImage;
int height = glyph.fHeight;
src += rec.y0 * rec.pitch + rec.x0;
while (--height >= 0)
{
memcpy(dst, src, glyph.fWidth);
src += rec.pitch;
dst += glyph.fRowBytes;
}
}
bool GrTextUtils::DfAppendGlyph(GrAtlasTextBlob* blob, int runIndex, GrBatchFontCache* cache,
GrBatchTextStrike** strike, const SkGlyph& skGlyph,
SkScalar sx, SkScalar sy, GrColor color,
GrFontScaler* scaler,
SkScalar textRatio, const SkMatrix& viewMatrix) {
if (!*strike) {
*strike = cache->getStrike(scaler);
}
GrGlyph::PackedID id = GrGlyph::Pack(skGlyph.getGlyphID(),
skGlyph.getSubXFixed(),
skGlyph.getSubYFixed(),
GrGlyph::kDistance_MaskStyle);
GrGlyph* glyph = (*strike)->getGlyph(skGlyph, id, scaler);
if (!glyph) {
return true;
}
// fallback to color glyph support
if (kA8_GrMaskFormat != glyph->fMaskFormat) {
return false;
}
SkScalar dx = SkIntToScalar(glyph->fBounds.fLeft + SK_DistanceFieldInset);
SkScalar dy = SkIntToScalar(glyph->fBounds.fTop + SK_DistanceFieldInset);
SkScalar width = SkIntToScalar(glyph->fBounds.width() - 2 * SK_DistanceFieldInset);
SkScalar height = SkIntToScalar(glyph->fBounds.height() - 2 * SK_DistanceFieldInset);
SkScalar scale = textRatio;
dx *= scale;
dy *= scale;
width *= scale;
height *= scale;
sx += dx;
sy += dy;
SkRect glyphRect = SkRect::MakeXYWH(sx, sy, width, height);
blob->appendGlyph(runIndex, glyphRect, color, *strike, glyph, scaler, skGlyph,
sx - dx, sy - dy, scale, true);
return true;
}
void SkScalerContext_CairoFT::generatePath(const SkGlyph& glyph, SkPath* path)
{
SkASSERT(fScaledFont != NULL);
CairoLockedFTFace faceLock(fScaledFont);
FT_Face face = faceLock.getFace();
SkASSERT(&glyph && path);
uint32_t flags = fLoadGlyphFlags;
flags |= FT_LOAD_NO_BITMAP; // ignore embedded bitmaps so we're sure to get the outline
flags &= ~FT_LOAD_RENDER; // don't scan convert (we just want the outline)
FT_Error err = FT_Load_Glyph(face, glyph.getGlyphID(), flags);
if (err != 0) {
path->reset();
return;
}
generateGlyphPath(face, path);
}
void SkScalerContext_Windows::generateImage(const SkGlyph& glyph) {
SkAutoMutexAcquire ac(gFTMutex);
SkASSERT(fDDC);
const bool isBW = SkMask::kBW_Format == fRec.fMaskFormat;
if ((SkMask::kLCD16_Format == fRec.fMaskFormat) || isBW) {
HDC dc = CreateCompatibleDC(0);
void* bits = 0;
int biWidth = isBW ? alignTo32(glyph.fWidth) : glyph.fWidth;
MyBitmapInfo info;
sk_bzero(&info, sizeof(info));
if (isBW) {
RGBQUAD blackQuad = { 0, 0, 0, 0 };
RGBQUAD whiteQuad = { 0xFF, 0xFF, 0xFF, 0 };
info.bmiColors[0] = blackQuad;
info.bmiColors[1] = whiteQuad;
}
info.bmiHeader.biSize = sizeof(info.bmiHeader);
info.bmiHeader.biWidth = biWidth;
info.bmiHeader.biHeight = glyph.fHeight;
info.bmiHeader.biPlanes = 1;
info.bmiHeader.biBitCount = isBW ? 1 : 32;
info.bmiHeader.biCompression = BI_RGB;
if (isBW) {
info.bmiHeader.biClrUsed = 2;
}
HBITMAP bm = CreateDIBSection(dc, &info, DIB_RGB_COLORS, &bits, 0, 0);
SelectObject(dc, bm);
// erase to white
size_t srcRB = isBW ? (biWidth >> 3) : (glyph.fWidth << 2);
size_t size = glyph.fHeight * srcRB;
memset(bits, isBW ? 0 : 0xFF, size);
SetGraphicsMode(dc, GM_ADVANCED);
SetBkMode(dc, TRANSPARENT);
SetTextAlign(dc, TA_LEFT | TA_BASELINE);
XFORM xform = fXform;
xform.eDx = (float)-glyph.fLeft;
xform.eDy = (float)-glyph.fTop;
SetWorldTransform(dc, &xform);
HGDIOBJ prevFont = SelectObject(dc, fFont);
COLORREF color = SetTextColor(dc, isBW ? 0xFFFFFF : 0);
SkASSERT(color != CLR_INVALID);
uint16_t glyphID = glyph.getGlyphID();
#if defined(UNICODE)
ExtTextOut(dc, 0, 0, ETO_GLYPH_INDEX, NULL, (LPCWSTR)&glyphID, 1, NULL);
#else
ExtTextOut(dc, 0, 0, ETO_GLYPH_INDEX, NULL, (LPCSTR)&glyphID, 1, NULL);
#endif
GdiFlush();
// downsample from rgba to rgb565
int width = glyph.fWidth;
size_t dstRB = glyph.rowBytes();
if (isBW) {
const uint8_t* src = (const uint8_t*)bits;
// gdi's bitmap is upside-down, so we reverse dst walking in Y
uint8_t* dst = (uint8_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB);
for (int y = 0; y < glyph.fHeight; y++) {
memcpy(dst, src, dstRB);
src += srcRB;
dst -= dstRB;
}
} else { // LCD16
const uint32_t* src = (const uint32_t*)bits;
// gdi's bitmap is upside-down, so we reverse dst walking in Y
uint16_t* dst = (uint16_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB);
for (int y = 0; y < glyph.fHeight; y++) {
for (int i = 0; i < width; i++) {
dst[i] = rgb_to_lcd16(src[i]);
}
src = (const uint32_t*)((const char*)src + srcRB);
dst = (uint16_t*)((char*)dst - dstRB);
}
}
DeleteDC(dc);
DeleteObject(bm);
return;
}
void SkScalerContext_Windows::generateImage(const SkGlyph& glyph) {
SkAutoMutexAcquire ac(gFTMutex);
SkASSERT(fDDC);
if (SkMask::kLCD16_Format == fRec.fMaskFormat) {
HDC dc = CreateCompatibleDC(0);
void* bits = 0;
BITMAPINFO info;
sk_bzero(&info, sizeof(info));
info.bmiHeader.biSize = sizeof(info.bmiHeader);
info.bmiHeader.biWidth = glyph.fWidth;
info.bmiHeader.biHeight = glyph.fHeight;
info.bmiHeader.biPlanes = 1;
info.bmiHeader.biBitCount = 32;
info.bmiHeader.biCompression = BI_RGB;
HBITMAP bm = CreateDIBSection(dc, &info, DIB_RGB_COLORS, &bits, 0, 0);
SelectObject(dc, bm);
// erase to white
size_t srcRB = glyph.fWidth << 2;
size_t size = glyph.fHeight * srcRB;
memset(bits, 0xFF, size);
SetBkMode(dc, TRANSPARENT);
SetTextAlign(dc, TA_LEFT | TA_BASELINE);
SetGraphicsMode(dc, GM_ADVANCED);
XFORM xform = fXform;
xform.eDx = (float)-glyph.fLeft;
xform.eDy = (float)-glyph.fTop;
SetWorldTransform(dc, &xform);
HGDIOBJ prevFont = SelectObject(dc, fFont);
COLORREF color = SetTextColor(dc, 0); // black
SkASSERT(color != CLR_INVALID);
uint16_t glyphID = glyph.getGlyphID();
ExtTextOut(dc, 0, 0, ETO_GLYPH_INDEX, NULL, (LPCWSTR)&glyphID, 1, NULL);
GdiFlush();
// downsample from rgba to rgb565
int width = glyph.fWidth;
size_t dstRB = glyph.rowBytes();
const uint32_t* src = (const uint32_t*)bits;
// gdi's bitmap is upside-down, so we reverse dst walking in Y
uint16_t* dst = (uint16_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB);
for (int y = 0; y < glyph.fHeight; y++) {
for (int i = 0; i < width; i++) {
dst[i] = rgb_to_lcd16(src[i]);
}
src = (const uint32_t*)((const char*)src + srcRB);
dst = (uint16_t*)((char*)dst - dstRB);
}
DeleteDC(dc);
DeleteObject(bm);
return;
}
GLYPHMETRICS gm;
memset(&gm, 0, sizeof(gm));
uint32_t bytecount = 0;
uint32_t total_size = GetGlyphOutlineW(fDDC, glyph.fID, GGO_GRAY8_BITMAP | GGO_GLYPH_INDEX, &gm, 0, NULL, &fMat22);
if (GDI_ERROR != total_size && total_size > 0) {
uint8_t *pBuff = new uint8_t[total_size];
if (NULL != pBuff) {
total_size = GetGlyphOutlineW(fDDC, glyph.fID, GGO_GRAY8_BITMAP | GGO_GLYPH_INDEX, &gm, total_size, pBuff, &fMat22);
SkASSERT(total_size != GDI_ERROR);
SkASSERT(glyph.fWidth == gm.gmBlackBoxX);
SkASSERT(glyph.fHeight == gm.gmBlackBoxY);
uint8_t* dst = (uint8_t*)glyph.fImage;
uint32_t pitch = (gm.gmBlackBoxX + 3) & ~0x3;
if (pitch != glyph.rowBytes()) {
SkASSERT(false); // glyph.fImage has different rowsize!?
}
for (int32_t y = gm.gmBlackBoxY - 1; y >= 0; y--) {
uint8_t* src = pBuff + pitch * y;
for (uint32_t x = 0; x < gm.gmBlackBoxX; x++) {
if (*src > 63) {
*dst = 0xFF;
}
else {
*dst = *src << 2; // scale to 0-255
}
dst++;
src++;
bytecount++;
}
memset(dst, 0, glyph.rowBytes() - glyph.fWidth);
dst += glyph.rowBytes() - glyph.fWidth;
}
delete[] pBuff;
}
}
SkASSERT(GDI_ERROR != total_size && total_size >= 0);
}