예제 #1
0
void GraphicsContext::drawBidiText(const Font& font, const TextRun& run, const FloatPoint& point)
{
    if (paintingDisabled())
        return;

    BidiResolver<TextRunIterator, BidiCharacterRun> bidiResolver;
    bidiResolver.setStatus(BidiStatus(run.direction(), run.directionalOverride()));
    bidiResolver.setPosition(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.setText(run.data(bidiRun->start()), bidiRun->stop() - bidiRun->start());
        bool isRTL = bidiRun->level() % 2;
        subrun.setDirection(isRTL ? RTL : LTR);
        subrun.setDirectionalOverride(bidiRun->dirOverride(false));

        font.drawText(this, subrun, currPoint);

        bidiRun = bidiRun->next();
        // FIXME: Have Font::drawText return the width of what it drew so that we don't have to re-measure here.
        if (bidiRun)
            currPoint.move(font.width(subrun), 0);
    }

    bidiRuns.deleteRuns();
}
예제 #2
0
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();
}
void GraphicsContext::drawBidiText(const Font& font, const TextRun& run, const FloatPoint& point)
{
    if (paintingDisabled())
        return;

    BidiResolver<TextRunIterator, BidiCharacterRun> bidiResolver;
    WTF::Unicode::Direction paragraphDirection = run.ltr() ? WTF::Unicode::LeftToRight : WTF::Unicode::RightToLeft;

    bidiResolver.setStatus(BidiStatus(paragraphDirection, paragraphDirection, paragraphDirection, new BidiContext(run.ltr() ? 0 : 1, paragraphDirection, run.directionalOverride())));

    bidiResolver.setPosition(TextRunIterator(&run, 0));
    bidiResolver.createBidiRunsForLine(TextRunIterator(&run, run.length()));

    if (!bidiResolver.runCount())
        return;

    FloatPoint currPoint = point;
    BidiCharacterRun* bidiRun = bidiResolver.firstRun();
    while (bidiRun) {

        TextRun subrun = run;
        subrun.setText(run.data(bidiRun->start()), bidiRun->stop() - bidiRun->start());
        subrun.setRTL(bidiRun->level() % 2);
        subrun.setDirectionalOverride(bidiRun->dirOverride(false));

        font.drawText(this, subrun, currPoint);

        bidiRun = bidiRun->next();
        // FIXME: Have Font::drawText return the width of what it drew so that we don't have to re-measure here.
        if (bidiRun)
            currPoint.move(font.floatWidth(subrun), 0.f);
    }

    bidiResolver.deleteRuns();
}
예제 #4
0
float GraphicsContext::drawBidiText(const Font& font, const TextRun& run, const FloatPoint& point, Font::CustomFontNotReadyAction customFontNotReadyAction, BidiStatus* status, int length)
#endif
{
    if (paintingDisabled())
#if !PLATFORM(IOS)
        return;
#else
        return 0;
#endif

    BidiResolver<TextRunIterator, BidiCharacterRun> bidiResolver;
#if !PLATFORM(IOS)
    bidiResolver.setStatus(BidiStatus(run.direction(), run.directionalOverride()));
#else
    bidiResolver.setStatus(status ? *status : BidiStatus(run.direction(), run.directionalOverride()));
#endif
    bidiResolver.setPositionIgnoringNestedIsolates(TextRunIterator(&run, 0));

    // FIXME: This ownership should be reversed. We should pass BidiRunList
    // to BidiResolver in createBidiRunsForLine.
    BidiRunList<BidiCharacterRun>& bidiRuns = bidiResolver.runs();
#if !PLATFORM(IOS)
    bidiResolver.createBidiRunsForLine(TextRunIterator(&run, run.length()));
#else
    bidiResolver.createBidiRunsForLine(TextRunIterator(&run, length < 0 ? run.length() : length));
#endif    
    if (!bidiRuns.runCount())
#if !PLATFORM(IOS)
        return;
#else
        return 0;
#endif

    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));

#if !PLATFORM(IOS)
        font.drawText(this, subrun, currPoint, 0, -1, customFontNotReadyAction);

        bidiRun = bidiRun->next();
        // FIXME: Have Font::drawText return the width of what it drew so that we don't have to re-measure here.
        if (bidiRun)
            currPoint.move(font.width(subrun), 0);
#else
        float width = font.drawText(this, subrun, currPoint, 0, -1, customFontNotReadyAction);
        currPoint.move(width, 0);

        bidiRun = bidiRun->next();
#endif
    }

#if PLATFORM(IOS)
    if (status)
        *status = bidiResolver.status();
#endif
    bidiRuns.deleteRuns();

#if PLATFORM(IOS)
    return currPoint.x() - static_cast<float>(point.x());
#endif
}