C++ FloatPoint::move方法代码示例

FloatPoint SVGPathBlender::blendAnimatedFloatPoint(const FloatPoint& fromPoint, const FloatPoint& toPoint)
{
    if (m_fromMode == m_toMode)
        return blendFloatPoint(fromPoint, toPoint, m_progress);

    // Transform toPoint to the coordinate mode of fromPoint
    FloatPoint animatedPoint = toPoint;
    if (m_fromMode == AbsoluteCoordinates)
        animatedPoint += m_toCurrentPoint;
    else
        animatedPoint.move(-m_toCurrentPoint.x(), -m_toCurrentPoint.y());

    animatedPoint = blendFloatPoint(fromPoint, animatedPoint, m_progress);

    if (m_isInFirstHalfOfAnimation)
        return animatedPoint;

    // Transform the animated point to the coordinate mode, needed for the current progress.
    FloatPoint currentPoint = blendFloatPoint(m_fromCurrentPoint, m_toCurrentPoint, m_progress);
    if (m_toMode == AbsoluteCoordinates)
        return animatedPoint + currentPoint;

    animatedPoint.move(-currentPoint.x(), -currentPoint.y());
    return animatedPoint;
}

TransformationMatrix SVGSVGElement::getScreenCTM() const
{
    document()->updateLayoutIgnorePendingStylesheets();
    FloatPoint rootLocation;    

    if (RenderObject* renderer = this->renderer()) {
        if (isOutermostSVG()) {
            // FIXME: This doesn't work correctly with CSS transforms.
            FloatPoint point;
            if (renderer->parent())
                point = renderer->localToAbsolute(point, true);
            rootLocation.move(point.x(), point.y());
        } else
            rootLocation.move(x().value(this), y().value(this));
    }
    
    TransformationMatrix mat = SVGStyledLocatableElement::getScreenCTM();
    mat.translate(rootLocation.x(), rootLocation.y());

    if (attributes()->getAttributeItem(SVGNames::viewBoxAttr)) {
        TransformationMatrix viewBox = viewBoxToViewTransform(width().value(this), height().value(this));
        mat = viewBox * mat;
    }

    return mat;
}

FloatPoint SVGPathBlender::BlendState::blendAnimatedFloatPoint(
    const FloatPoint& fromPoint,
    const FloatPoint& toPoint) {
  if (m_typesAreEqual)
    return blendAnimatedFloatPointSameCoordinates(fromPoint, toPoint);

  // Transform toPoint to the coordinate mode of fromPoint
  FloatPoint animatedPoint = toPoint;
  if (m_fromIsAbsolute)
    animatedPoint += m_toCurrentPoint;
  else
    animatedPoint.move(-m_toCurrentPoint.x(), -m_toCurrentPoint.y());

  animatedPoint = blendFloatPoint(fromPoint, animatedPoint, m_progress);

  // If we're in the first half of the animation, we should use the type of the
  // from segment.
  if (m_isInFirstHalfOfAnimation)
    return animatedPoint;

  // Transform the animated point to the coordinate mode, needed for the current
  // progress.
  FloatPoint currentPoint =
      blendFloatPoint(m_fromCurrentPoint, m_toCurrentPoint, m_progress);
  if (!m_fromIsAbsolute)
    return animatedPoint + currentPoint;

  animatedPoint.move(-currentPoint.x(), -currentPoint.y());
  return animatedPoint;
}

void SVGGlyphToPathTranslator::advance()
{
    do {
        if (m_glyph) {
            float advance = m_glyphBuffer.advanceAt(m_index).width();
            if (m_isVerticalText)
                m_currentPoint.move(0, advance);
            else
                m_currentPoint.move(advance, 0);
        }

        ++m_index;
        if (m_index >= m_stoppingPoint || !m_glyphBuffer.fontDataAt(m_index)->isSVGFont())
            break;
        m_glyph = m_glyphBuffer.glyphAt(m_index);
        if (!m_glyph)
            continue;
        m_svgGlyph = m_fontElement.svgGlyphForGlyph(m_glyph);
        ASSERT(!m_svgGlyph.isPartOfLigature);
        ASSERT(m_svgGlyph.tableEntry == m_glyph);
        SVGGlyphElement::inheritUnspecifiedAttributes(m_svgGlyph, &m_svgFontData);
    } while ((!m_glyph || m_svgGlyph.pathData.isEmpty()) && m_index < m_stoppingPoint);

    if (containsMorePaths() && m_isVerticalText) {
        m_glyphOrigin.setX(m_svgGlyph.verticalOriginX * m_scale);
        m_glyphOrigin.setY(m_svgGlyph.verticalOriginY * m_scale);
    }
}

Optional<FloatPoint> RenderCombineText::computeTextOrigin(const FloatRect& boxRect) const
{
    if (!m_isCombined)
        return Nullopt;

    // Visually center m_combinedTextWidth/Ascent/Descent within boxRect
    FloatPoint result = boxRect.minXMaxYCorner();
    FloatSize combinedTextSize(m_combinedTextWidth, m_combinedTextAscent + m_combinedTextDescent);
    result.move((boxRect.size().transposedSize() - combinedTextSize) / 2);
    result.move(0, m_combinedTextAscent);
    return result;
}

void RenderWidget::updateWidgetPosition()
{
    if (!m_widget)
        return;

    // FIXME: This doesn't work correctly with transforms.
    FloatPoint absPos = localToAbsolute();
    absPos.move(borderLeft() + paddingLeft(), borderTop() + paddingTop());

    int w = width() - borderLeft() - borderRight() - paddingLeft() - paddingRight();
    int h = height() - borderTop() - borderBottom() - paddingTop() - paddingBottom();

    IntRect newBounds(absPos.x(), absPos.y(), w, h);
    IntRect oldBounds(m_widget->frameRect());
    if (newBounds != oldBounds) {
        // The widget changed positions.  Update the frame geometry.
        if (checkForRepaintDuringLayout()) {
            RenderView* v = view();
            if (!v->printing()) {
                // FIXME: do container-relative repaint
                v->repaintRectangleInViewAndCompositedLayers(oldBounds);
                v->repaintRectangleInViewAndCompositedLayers(newBounds);
            }
        }

        RenderArena* arena = ref();
        element()->ref();
        m_widget->setFrameRect(newBounds);
        element()->deref();
        deref(arena);
    }
}

void RenderWidget::updateWidgetPosition()
{
    if (!m_widget)
        return;

    // FIXME: This doesn't work correctly with transforms.
    FloatPoint absPos = localToAbsolute();
    absPos.move(borderLeft() + paddingLeft(), borderTop() + paddingTop());

    int w = width() - borderLeft() - borderRight() - paddingLeft() - paddingRight();
    int h = height() - borderTop() - borderBottom() - paddingTop() - paddingBottom();

    IntRect newBounds(absPos.x(), absPos.y(), w, h);
    IntRect oldBounds(m_widget->frameRect());
    bool boundsChanged = newBounds != oldBounds;
    if (boundsChanged) {
        RenderArena* arena = ref();
        node()->ref();
        m_widget->setFrameRect(newBounds);
        node()->deref();
        deref(arena);
    }
    
    // if the frame bounds got changed, or if view needs layout (possibly indicating
    // content size is wrong) we have to do a layout to set the right widget size
    if (m_widget->isFrameView()) {
        FrameView* frameView = static_cast<FrameView*>(m_widget.get());
        if (boundsChanged || frameView->needsLayout())
            frameView->layout();
    }
}

void EllipsisBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom)
{
    GraphicsContext* context = paintInfo.context;
    RenderStyle* style = renderer().style(isFirstLineStyle());

    const Font& font = style->font();
    FloatPoint boxOrigin = locationIncludingFlipping();
    boxOrigin.moveBy(FloatPoint(paintOffset));
    if (!isHorizontal())
        boxOrigin.move(0, -virtualLogicalHeight());
    FloatRect boxRect(boxOrigin, LayoutSize(logicalWidth(), virtualLogicalHeight()));
    GraphicsContextStateSaver stateSaver(*context);
    if (!isHorizontal())
        context->concatCTM(InlineTextBox::rotation(boxRect, InlineTextBox::Clockwise));
    FloatPoint textOrigin = FloatPoint(boxOrigin.x(), boxOrigin.y() + font.fontMetrics().ascent());

    Color styleTextColor = renderer().resolveColor(style, CSSPropertyWebkitTextFillColor);
    if (styleTextColor != context->fillColor())
        context->setFillColor(styleTextColor);

    if (selectionState() != RenderObject::SelectionNone) {
        paintSelection(context, boxOrigin, style, font);

        // Select the correct color for painting the text.
        Color foreground = paintInfo.forceBlackText() ? Color::black : renderer().selectionForegroundColor();
        if (foreground != styleTextColor)
            context->setFillColor(foreground);
    }

    // Text shadows are disabled when printing. http://crbug.com/258321
    const ShadowList* shadowList = context->printing() ? 0 : style->textShadow();
    bool hasShadow = shadowList;
    if (hasShadow) {
        OwnPtr<DrawLooperBuilder> drawLooperBuilder = DrawLooperBuilder::create();
        for (size_t i = shadowList->shadows().size(); i--; ) {
            const ShadowData& shadow = shadowList->shadows()[i];
            float shadowX = isHorizontal() ? shadow.x() : shadow.y();
            float shadowY = isHorizontal() ? shadow.y() : -shadow.x();
            FloatSize offset(shadowX, shadowY);
            drawLooperBuilder->addShadow(offset, shadow.blur(), shadow.color(),
                DrawLooperBuilder::ShadowRespectsTransforms, DrawLooperBuilder::ShadowIgnoresAlpha);
        }
        drawLooperBuilder->addUnmodifiedContent();
        context->setDrawLooper(drawLooperBuilder.release());
    }

    TextRun textRun = RenderBlockFlow::constructTextRun(&renderer(), font, m_str, style, TextRun::AllowTrailingExpansion);
    TextRunPaintInfo textRunPaintInfo(textRun);
    textRunPaintInfo.bounds = boxRect;
    context->drawText(font, textRunPaintInfo, textOrigin);

    // Restore the regular fill color.
    if (styleTextColor != context->fillColor())
        context->setFillColor(styleTextColor);

    if (hasShadow)
        context->clearDrawLooper();

    paintMarkupBox(paintInfo, paintOffset, lineTop, lineBottom, style);
}

bool SVGPathParser::parseCurveToQuadraticSmoothSegment()
{
    FloatPoint targetPoint;
    if (!m_source.parseCurveToQuadraticSmoothSegment(targetPoint))
        return false;

    if (m_lastCommand != PathSegCurveToQuadraticAbs
        && m_lastCommand != PathSegCurveToQuadraticRel
        && m_lastCommand != PathSegCurveToQuadraticSmoothAbs
        && m_lastCommand != PathSegCurveToQuadraticSmoothRel)
        m_controlPoint = m_currentPoint;

    if (m_pathParsingMode == NormalizedParsing) {
        FloatPoint cubicPoint = m_currentPoint;
        cubicPoint.scale(2);
        cubicPoint.move(-m_controlPoint.x(), -m_controlPoint.y());
        FloatPoint point1(m_currentPoint.x() + 2 * cubicPoint.x(), m_currentPoint.y() + 2 * cubicPoint.y());
        FloatPoint point2(targetPoint.x() + 2 * cubicPoint.x(), targetPoint.y() + 2 * cubicPoint.y());
        if (m_mode == RelativeCoordinates) {
            point2 += m_currentPoint;
            targetPoint += m_currentPoint;
        }
        point1.scale(gOneOverThree);
        point2.scale(gOneOverThree);

        m_consumer.curveToCubic(point1, point2, targetPoint, AbsoluteCoordinates);

        m_controlPoint = cubicPoint;
        m_currentPoint = targetPoint;
    } else
        m_consumer.curveToQuadraticSmooth(targetPoint, m_mode);
    return true;
}

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();
}

void EllipsisBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom)
{
    GraphicsContext* context = paintInfo.context;
    RenderStyle* style = renderer().style(isFirstLineStyle());
    const Font& font = style->font();
    FloatPoint boxOrigin = locationIncludingFlipping();
    boxOrigin.moveBy(FloatPoint(paintOffset));
    if (!isHorizontal())
        boxOrigin.move(0, -virtualLogicalHeight());
    FloatRect boxRect(boxOrigin, LayoutSize(logicalWidth(), virtualLogicalHeight()));
    GraphicsContextStateSaver stateSaver(*context);
    if (!isHorizontal())
        context->concatCTM(InlineTextBox::rotation(boxRect, InlineTextBox::Clockwise));
    FloatPoint textOrigin(boxOrigin.x(), boxOrigin.y() + font.fontMetrics().ascent());

    bool isPrinting = renderer().document().printing();
    bool haveSelection = !isPrinting && paintInfo.phase != PaintPhaseTextClip && selectionState() != RenderObject::SelectionNone;

    if (haveSelection)
        paintSelection(context, boxOrigin, style, font);
    else if (paintInfo.phase == PaintPhaseSelection)
        return;

    TextPainter::Style textStyle = TextPainter::textPaintingStyle(renderer(), style, paintInfo.forceBlackText(), isPrinting);
    if (haveSelection)
        textStyle = TextPainter::selectionPaintingStyle(renderer(), true, paintInfo.forceBlackText(), isPrinting, textStyle);

    TextRun textRun = constructTextRun(&renderer(), font, m_str, style, TextRun::AllowTrailingExpansion);
    TextPainter textPainter(context, font, textRun, textOrigin, boxRect, isHorizontal());
    textPainter.paint(0, m_str.length(), m_str.length(), textStyle);

    paintMarkupBox(paintInfo, paintOffset, lineTop, lineBottom, style);
}

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();
}

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();
}

static inline void calculateGlyphBoundaries(const QueryData* queryData, const SVGTextFragment& fragment, int startPosition, FloatRect& extent)
{
    float scalingFactor = queryData->textLayoutObject->scalingFactor();
    ASSERT(scalingFactor);

    FloatPoint glyphPosition = calculateGlyphPositionWithoutTransform(queryData, fragment, startPosition);
    glyphPosition.move(0, -queryData->textLayoutObject->scaledFont().fontMetrics().floatAscent() / scalingFactor);
    extent.setLocation(glyphPosition);

    // Use the SVGTextMetrics computed by SVGTextMetricsBuilder (which spends
    // time attempting to compute more correct glyph bounds already, handling
    // cursive scripts to some degree.)
    const Vector<SVGTextMetrics>& textMetricsValues = queryData->textLayoutObject->layoutAttributes()->textMetricsValues();
    const SVGTextMetrics& metrics = findMetricsForCharacter(textMetricsValues, fragment, startPosition);

    // TODO(fs): Negative glyph extents seems kind of weird to have, but
    // presently it can occur in some cases (like Arabic.)
    FloatSize glyphSize(std::max<float>(metrics.width(), 0), std::max<float>(metrics.height(), 0));
    extent.setSize(glyphSize);

    // If RTL, adjust the starting point to align with the LHS of the glyph bounding box.
    if (!queryData->textBox->isLeftToRightDirection()) {
        if (queryData->isVerticalText)
            extent.move(0, -glyphSize.height());
        else
            extent.move(-glyphSize.width(), 0);
    }

    AffineTransform fragmentTransform;
    fragment.buildFragmentTransform(fragmentTransform, SVGTextFragment::TransformIgnoringTextLength);

    extent = fragmentTransform.mapRect(extent);
}

static inline FloatPoint getPhase(const FloatRect& dest, const FloatRect& tile)
{
    FloatPoint phase = dest.location();
    phase.move(-tile.x(), -tile.y());

    return phase;
}