void GraphicsContext::drawBidiText(const FontCascade& font, const TextRun& run, const FloatPoint& point, FontCascade::CustomFontNotReadyAction customFontNotReadyAction)
{
if (paintingDisabled())
return;
BidiResolver<TextRunIterator, BidiCharacterRun> bidiResolver;
bidiResolver.setStatus(BidiStatus(run.direction(), run.directionalOverride()));
bidiResolver.setPositionIgnoringNestedIsolates(TextRunIterator(&run, 0));
// FIXME: This ownership should be reversed. We should pass BidiRunList
// to BidiResolver in createBidiRunsForLine.
BidiRunList<BidiCharacterRun>& bidiRuns = bidiResolver.runs();
bidiResolver.createBidiRunsForLine(TextRunIterator(&run, run.length()));
if (!bidiRuns.runCount())
return;
FloatPoint currPoint = point;
BidiCharacterRun* bidiRun = bidiRuns.firstRun();
while (bidiRun) {
TextRun subrun = run.subRun(bidiRun->start(), bidiRun->stop() - bidiRun->start());
bool isRTL = bidiRun->level() % 2;
subrun.setDirection(isRTL ? RTL : LTR);
subrun.setDirectionalOverride(bidiRun->dirOverride(false));
float width = font.drawText(*this, subrun, currPoint, 0, -1, customFontNotReadyAction);
currPoint.move(width, 0);
bidiRun = bidiRun->next();
}
bidiRuns.deleteRuns();
}
float GraphicsContext::drawText(const FontCascade& font, const TextRun& run, const FloatPoint& point, int from, int to)
{
if (paintingDisabled())
return 0;
return font.drawText(*this, run, point, from, to);
}
static void doDrawTextAtPoint(GraphicsContext& context, const String& text, const IntPoint& point, const FontCascade& font, const Color& color, int underlinedIndex)
{
TextRun run(text);
context.setFillColor(color);
if (isOneLeftToRightRun(run))
font.drawText(context, run, point);
else
context.drawBidiText(font, run, point);
if (underlinedIndex >= 0) {
ASSERT_WITH_SECURITY_IMPLICATION(underlinedIndex < static_cast<int>(text.length()));
int beforeWidth;
if (underlinedIndex > 0) {
TextRun beforeRun(StringView(text).substring(0, underlinedIndex));
beforeWidth = font.width(beforeRun);
} else
beforeWidth = 0;
TextRun underlinedRun(StringView(text).substring(underlinedIndex, 1));
int underlinedWidth = font.width(underlinedRun);
IntPoint underlinePoint(point);
underlinePoint.move(beforeWidth, 1);
context.setStrokeColor(color);
context.drawLineForText(underlinePoint, underlinedWidth, false);
}
}
float GraphicsContext::drawText(const FontCascade& font, const TextRun& run, const FloatPoint& point, int from, int to)
{
if (paintingDisabled())
return 0;
// Display list recording for text content is done at glyphs level. See GraphicsContext::drawGlyphs.
return font.drawText(*this, run, point, from, to);
}
