sk_sp<SkFont> SkFont::Testing_CreateFromPaint(const SkPaint& paint) {
uint32_t flags = 0;
if (paint.isVerticalText()) {
flags |= kVertical_Flag;
}
if (paint.isEmbeddedBitmapText()) {
flags |= kEmbeddedBitmaps_Flag;
}
if (paint.getFlags() & SkPaint::kGenA8FromLCD_Flag) {
flags |= kGenA8FromLCD_Flag;
}
if (paint.isFakeBoldText()) {
flags |= kEmbolden_Flag;
}
if (SkPaint::kFull_Hinting == paint.getHinting()) {
flags |= kEnableByteCodeHints_Flag;
}
if (paint.isAutohinted()) {
flags |= kEnableAutoHints_Flag;
}
if (paint.isSubpixelText() || paint.isLinearText()) {
// this is our default
} else {
flags |= kUseNonlinearMetrics_Flag;
}
MaskType maskType = SkFont::kBW_MaskType;
if (paint.isAntiAlias()) {
maskType = paint.isLCDRenderText() ? kLCD_MaskType : kA8_MaskType;
}
return Make(sk_ref_sp(paint.getTypeface()), paint.getTextSize(), paint.getTextScaleX(),
paint.getTextSkewX(), maskType, flags);
}
uint32_t GrTextUtils::FilterTextFlags(const SkSurfaceProps& surfaceProps, const SkPaint& paint) {
uint32_t flags = paint.getFlags();
if (!paint.isLCDRenderText() || !paint.isAntiAlias()) {
return flags;
}
if (kUnknown_SkPixelGeometry == surfaceProps.pixelGeometry() || ShouldDisableLCD(paint)) {
flags &= ~SkPaint::kLCDRenderText_Flag;
flags |= SkPaint::kGenA8FromLCD_Flag;
}
return flags;
}
uint32_t SkBaseDevice::filterTextFlags(const SkPaint& paint) const {
uint32_t flags = paint.getFlags();
if (!paint.isLCDRenderText() || !paint.isAntiAlias()) {
return flags;
}
if (kUnknown_SkPixelGeometry == fSurfaceProps.pixelGeometry()
|| this->onShouldDisableLCD(paint)) {
flags &= ~SkPaint::kLCDRenderText_Flag;
flags |= SkPaint::kGenA8FromLCD_Flag;
}
return flags;
}
bool SkBitmapDevice::filterTextFlags(const SkPaint& paint, TextFlags* flags) {
if (!paint.isLCDRenderText() || !paint.isAntiAlias()) {
// we're cool with the paint as is
return false;
}
if (kN32_SkColorType != fBitmap.colorType() ||
paint.getRasterizer() ||
paint.getPathEffect() ||
paint.isFakeBoldText() ||
paint.getStyle() != SkPaint::kFill_Style ||
!SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrcOver_Mode)) {
// turn off lcd
flags->fFlags = paint.getFlags() & ~SkPaint::kLCDRenderText_Flag;
flags->fHinting = paint.getHinting();
return true;
}
// we're cool with the paint as is
return false;
}
String LoggingCanvas::stringForSkPaintFlags(const SkPaint& paint)
{
if (!paint.getFlags())
return "none";
String flagsString = "";
appendFlagToString(&flagsString, paint.isAntiAlias(), "AntiAlias");
appendFlagToString(&flagsString, paint.isDither(), "Dither");
appendFlagToString(&flagsString, paint.isUnderlineText(), "UnderlinText");
appendFlagToString(&flagsString, paint.isStrikeThruText(), "StrikeThruText");
appendFlagToString(&flagsString, paint.isFakeBoldText(), "FakeBoldText");
appendFlagToString(&flagsString, paint.isLinearText(), "LinearText");
appendFlagToString(&flagsString, paint.isSubpixelText(), "SubpixelText");
appendFlagToString(&flagsString, paint.isDevKernText(), "DevKernText");
appendFlagToString(&flagsString, paint.isLCDRenderText(), "LCDRenderText");
appendFlagToString(&flagsString, paint.isEmbeddedBitmapText(), "EmbeddedBitmapText");
appendFlagToString(&flagsString, paint.isAutohinted(), "Autohinted");
appendFlagToString(&flagsString, paint.isVerticalText(), "VerticalText");
appendFlagToString(&flagsString, paint.getFlags() & SkPaint::kGenA8FromLCD_Flag, "GenA8FromLCD");
return flagsString;
}
static void cgSetPaintForText(CGContextRef cg, const SkPaint& paint) {
SkColor c = paint.getColor();
CGFloat rgba[] = {
SkColorGetB(c) / 255.0f,
SkColorGetG(c) / 255.0f,
SkColorGetR(c) / 255.0f,
SkColorGetA(c) / 255.0f,
};
CGContextSetRGBFillColor(cg, rgba[0], rgba[1], rgba[2], rgba[3]);
CGContextSetTextDrawingMode(cg, kCGTextFill);
CGContextSetFont(cg, typefaceToCGFont(paint.getTypeface()));
CGContextSetFontSize(cg, SkScalarToFloat(paint.getTextSize()));
CGContextSetAllowsFontSubpixelPositioning(cg, paint.isSubpixelText());
CGContextSetShouldSubpixelPositionFonts(cg, paint.isSubpixelText());
CGContextSetShouldAntialias(cg, paint.isAntiAlias());
CGContextSetShouldSmoothFonts(cg, paint.isLCDRenderText());
}
bool SkDevice::filterTextFlags(const SkPaint& paint, TextFlags* flags) {
if (!paint.isLCDRenderText()) {
// we're cool with the paint as is
return false;
}
if (SkBitmap::kARGB_8888_Config != fBitmap.config() ||
paint.getShader() ||
paint.getXfermode() || // unless its srcover
paint.getMaskFilter() ||
paint.getRasterizer() ||
paint.getColorFilter() ||
paint.getPathEffect() ||
paint.isFakeBoldText() ||
paint.getStyle() != SkPaint::kFill_Style) {
// turn off lcd
flags->fFlags = paint.getFlags() & ~SkPaint::kLCDRenderText_Flag;
flags->fHinting = paint.getHinting();
return true;
}
// we're cool with the paint as is
return false;
}
void GrTextUtils::DrawDFPosText(GrAtlasTextBlob* blob, int runIndex,
GrBatchFontCache* fontCache, const SkSurfaceProps& props,
const SkPaint& origPaint,
GrColor color, const SkMatrix& viewMatrix,
const char text[], size_t byteLength,
const SkScalar pos[], int scalarsPerPosition,
const SkPoint& offset) {
SkASSERT(byteLength == 0 || text != nullptr);
SkASSERT(1 == scalarsPerPosition || 2 == scalarsPerPosition);
// nothing to draw
if (text == nullptr || byteLength == 0) {
return;
}
SkTDArray<char> fallbackTxt;
SkTDArray<SkScalar> fallbackPos;
// Setup distance field paint and text ratio
SkScalar textRatio;
SkPaint dfPaint(origPaint);
GrTextUtils::InitDistanceFieldPaint(blob, &dfPaint, &textRatio, viewMatrix);
blob->setHasDistanceField();
blob->setSubRunHasDistanceFields(runIndex, origPaint.isLCDRenderText());
GrBatchTextStrike* currStrike = nullptr;
SkGlyphCache* cache = blob->setupCache(runIndex, props, SkPaint::FakeGamma::Off,
dfPaint, nullptr);
SkPaint::GlyphCacheProc glyphCacheProc = dfPaint.getGlyphCacheProc(true);
GrFontScaler* fontScaler = GrTextUtils::GetGrFontScaler(cache);
const char* stop = text + byteLength;
if (SkPaint::kLeft_Align == dfPaint.getTextAlign()) {
while (text < stop) {
const char* lastText = text;
// the last 2 parameters are ignored
const SkGlyph& glyph = glyphCacheProc(cache, &text);
if (glyph.fWidth) {
SkScalar x = offset.x() + pos[0];
SkScalar y = offset.y() + (2 == scalarsPerPosition ? pos[1] : 0);
if (!DfAppendGlyph(blob,
runIndex,
fontCache,
&currStrike,
glyph,
x, y, color, fontScaler,
textRatio, viewMatrix)) {
// couldn't append, send to fallback
fallbackTxt.append(SkToInt(text-lastText), lastText);
*fallbackPos.append() = pos[0];
if (2 == scalarsPerPosition) {
*fallbackPos.append() = pos[1];
}
}
}
pos += scalarsPerPosition;
}
} else {
SkScalar alignMul = SkPaint::kCenter_Align == dfPaint.getTextAlign() ? SK_ScalarHalf
: SK_Scalar1;
while (text < stop) {
const char* lastText = text;
// the last 2 parameters are ignored
const SkGlyph& glyph = glyphCacheProc(cache, &text);
if (glyph.fWidth) {
SkScalar x = offset.x() + pos[0];
SkScalar y = offset.y() + (2 == scalarsPerPosition ? pos[1] : 0);
SkScalar advanceX = SkFixedToScalar(glyph.fAdvanceX) * alignMul * textRatio;
SkScalar advanceY = SkFixedToScalar(glyph.fAdvanceY) * alignMul * textRatio;
if (!DfAppendGlyph(blob,
runIndex,
fontCache,
&currStrike,
glyph,
x - advanceX, y - advanceY, color,
fontScaler,
textRatio,
viewMatrix)) {
// couldn't append, send to fallback
fallbackTxt.append(SkToInt(text-lastText), lastText);
*fallbackPos.append() = pos[0];
if (2 == scalarsPerPosition) {
*fallbackPos.append() = pos[1];
}
}
}
pos += scalarsPerPosition;
}
}
SkGlyphCache::AttachCache(cache);
if (fallbackTxt.count()) {
blob->initOverride(runIndex);
GrTextUtils::DrawBmpPosText(blob, runIndex, fontCache, props,
origPaint, origPaint.getColor(), viewMatrix,
fallbackTxt.begin(), fallbackTxt.count(),
fallbackPos.begin(), scalarsPerPosition, offset);
}
}
