void SVGLayoutSupport::applyStrokeStyleToStrokeData(StrokeData& strokeData,
const ComputedStyle& style,
const LayoutObject& object,
float dashScaleFactor) {
ASSERT(object.node());
ASSERT(object.node()->isSVGElement());
const SVGComputedStyle& svgStyle = style.svgStyle();
SVGLengthContext lengthContext(toSVGElement(object.node()));
strokeData.setThickness(lengthContext.valueForLength(svgStyle.strokeWidth()));
strokeData.setLineCap(svgStyle.capStyle());
strokeData.setLineJoin(svgStyle.joinStyle());
strokeData.setMiterLimit(svgStyle.strokeMiterLimit());
DashArray dashArray =
resolveSVGDashArray(*svgStyle.strokeDashArray(), style, lengthContext);
float dashOffset =
lengthContext.valueForLength(svgStyle.strokeDashOffset(), style);
// Apply scaling from 'pathLength'.
if (dashScaleFactor != 1) {
ASSERT(dashScaleFactor >= 0);
dashOffset *= dashScaleFactor;
for (auto& dashItem : dashArray)
dashItem *= dashScaleFactor;
}
strokeData.setLineDash(dashArray, dashOffset);
}
void SVGLayoutSupport::applyStrokeStyleToStrokeData(StrokeData& strokeData, const ComputedStyle& style, const LayoutObject& object)
{
ASSERT(object.node());
ASSERT(object.node()->isSVGElement());
const SVGComputedStyle& svgStyle = style.svgStyle();
SVGLengthContext lengthContext(toSVGElement(object.node()));
strokeData.setThickness(lengthContext.valueForLength(svgStyle.strokeWidth()));
strokeData.setLineCap(svgStyle.capStyle());
strokeData.setLineJoin(svgStyle.joinStyle());
strokeData.setMiterLimit(svgStyle.strokeMiterLimit());
DashArray dashArray = resolveSVGDashArray(*svgStyle.strokeDashArray(), style, lengthContext);
strokeData.setLineDash(dashArray, lengthContext.valueForLength(svgStyle.strokeDashOffset(), style));
}
FloatRect Path::strokeBoundingRect(const StrokeData& strokeData) const
{
SkPaint paint;
strokeData.setupPaint(&paint);
SkPath boundingPath;
paint.getFillPath(m_path, &boundingPath);
return boundingPath.getBounds();
}
bool Path::strokeContains(const FloatPoint& point, const StrokeData& strokeData) const
{
SkPaint paint;
strokeData.setupPaint(&paint);
SkPath strokePath;
paint.getFillPath(m_path, &strokePath);
return SkPathContainsPoint(strokePath, point, SkPath::kWinding_FillType);
}
void CanvasRenderingContext2D::drawFocusRing(const Path& path) {
m_usageCounters.numDrawFocusCalls++;
if (!drawingCanvas())
return;
SkColor color = LayoutTheme::theme().focusRingColor().rgb();
const int focusRingWidth = 5;
drawPlatformFocusRing(path.getSkPath(), drawingCanvas(), color,
focusRingWidth);
// We need to add focusRingWidth to dirtyRect.
StrokeData strokeData;
strokeData.setThickness(focusRingWidth);
SkIRect dirtyRect;
if (!computeDirtyRect(path.strokeBoundingRect(strokeData), &dirtyRect))
return;
didDraw(dirtyRect);
}
// FIXME: this method ignores the CTM and may yield inaccurate results for large
// scales.
SkPath Path::strokePath(const StrokeData& strokeData) const {
SkPaint paint;
strokeData.setupPaint(&paint);
// Skia stroke resolution scale. This is multiplied by 4 internally
// (i.e. 1.0 corresponds to 1/4 pixel res).
static const SkScalar kResScale = 0.3f;
SkPath strokePath;
paint.getFillPath(m_path, &strokePath, nullptr, kResScale);
return strokePath;
}
void SVGShapePainter::paint(const PaintInfo& paintInfo)
{
if (paintInfo.phase != PaintPhaseForeground
|| m_layoutSVGShape.style()->visibility() == HIDDEN
|| m_layoutSVGShape.isShapeEmpty())
return;
FloatRect boundingBox = m_layoutSVGShape.paintInvalidationRectInLocalCoordinates();
if (!paintInfo.cullRect().intersectsCullRect(m_layoutSVGShape.localTransform(), boundingBox))
return;
PaintInfo paintInfoBeforeFiltering(paintInfo);
// Shapes cannot have children so do not call updateCullRect.
TransformRecorder transformRecorder(paintInfoBeforeFiltering.context, m_layoutSVGShape, m_layoutSVGShape.localTransform());
{
SVGPaintContext paintContext(m_layoutSVGShape, paintInfoBeforeFiltering);
if (paintContext.applyClipMaskAndFilterIfNecessary() && !LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(paintContext.paintInfo().context, m_layoutSVGShape, paintContext.paintInfo().phase, LayoutPoint())) {
LayoutObjectDrawingRecorder recorder(paintContext.paintInfo().context, m_layoutSVGShape, paintContext.paintInfo().phase, boundingBox, LayoutPoint());
const SVGComputedStyle& svgStyle = m_layoutSVGShape.style()->svgStyle();
bool shouldAntiAlias = svgStyle.shapeRendering() != SR_CRISPEDGES;
for (int i = 0; i < 3; i++) {
switch (svgStyle.paintOrderType(i)) {
case PT_FILL: {
SkPaint fillPaint;
if (!SVGPaintContext::paintForLayoutObject(paintContext.paintInfo(), m_layoutSVGShape.styleRef(), m_layoutSVGShape, ApplyToFillMode, fillPaint))
break;
fillPaint.setAntiAlias(shouldAntiAlias);
fillShape(paintContext.paintInfo().context, fillPaint, fillRuleFromStyle(paintContext.paintInfo(), svgStyle));
break;
}
case PT_STROKE:
if (svgStyle.hasVisibleStroke()) {
GraphicsContextStateSaver stateSaver(paintContext.paintInfo().context, false);
AffineTransform nonScalingTransform;
const AffineTransform* additionalPaintServerTransform = 0;
if (m_layoutSVGShape.hasNonScalingStroke()) {
nonScalingTransform = m_layoutSVGShape.nonScalingStrokeTransform();
if (!setupNonScalingStrokeContext(nonScalingTransform, stateSaver))
return;
// Non-scaling stroke needs to reset the transform back to the host transform.
additionalPaintServerTransform = &nonScalingTransform;
}
SkPaint strokePaint;
if (!SVGPaintContext::paintForLayoutObject(paintContext.paintInfo(), m_layoutSVGShape.styleRef(), m_layoutSVGShape, ApplyToStrokeMode, strokePaint, additionalPaintServerTransform))
break;
strokePaint.setAntiAlias(shouldAntiAlias);
StrokeData strokeData;
SVGLayoutSupport::applyStrokeStyleToStrokeData(strokeData, m_layoutSVGShape.styleRef(), m_layoutSVGShape, m_layoutSVGShape.dashScaleFactor());
strokeData.setupPaint(&strokePaint);
strokeShape(paintContext.paintInfo().context, strokePaint);
}
break;
case PT_MARKERS:
paintMarkers(paintContext.paintInfo(), boundingBox);
break;
default:
ASSERT_NOT_REACHED();
break;
}
}
}
}
if (m_layoutSVGShape.style()->outlineWidth()) {
PaintInfo outlinePaintInfo(paintInfoBeforeFiltering);
outlinePaintInfo.phase = PaintPhaseSelfOutlineOnly;
ObjectPainter(m_layoutSVGShape).paintOutline(outlinePaintInfo, LayoutPoint(boundingBox.location()));
}
}
void SVGInlineTextBoxPainter::paintTextWithShadows(const PaintInfo& paintInfo, const ComputedStyle& style,
TextRun& textRun, const SVGTextFragment& fragment, int startPosition, int endPosition,
LayoutSVGResourceMode resourceMode)
{
LayoutSVGInlineText& textLayoutObject = toLayoutSVGInlineText(m_svgInlineTextBox.layoutObject());
float scalingFactor = textLayoutObject.scalingFactor();
ASSERT(scalingFactor);
const Font& scaledFont = textLayoutObject.scaledFont();
const ShadowList* shadowList = style.textShadow();
GraphicsContext* context = paintInfo.context;
// Text shadows are disabled when printing. http://crbug.com/258321
bool hasShadow = shadowList && !context->printing();
FloatPoint textOrigin(fragment.x, fragment.y);
FloatSize textSize(fragment.width, fragment.height);
AffineTransform paintServerTransform;
const AffineTransform* additionalPaintServerTransform = 0;
GraphicsContextStateSaver stateSaver(*context, false);
if (scalingFactor != 1) {
textOrigin.scale(scalingFactor, scalingFactor);
textSize.scale(scalingFactor);
stateSaver.save();
context->scale(1 / scalingFactor, 1 / scalingFactor);
// Adjust the paint-server coordinate space.
paintServerTransform.scale(scalingFactor);
additionalPaintServerTransform = &paintServerTransform;
}
SkPaint paint;
if (!SVGPaintContext::paintForLayoutObject(paintInfo, style, m_svgInlineTextBox.parent()->layoutObject(), resourceMode, paint, additionalPaintServerTransform))
return;
paint.setAntiAlias(true);
if (hasShadow) {
OwnPtr<DrawLooperBuilder> drawLooperBuilder = shadowList->createDrawLooper(DrawLooperBuilder::ShadowRespectsAlpha, style.visitedDependentColor(CSSPropertyColor));
RefPtr<SkDrawLooper> drawLooper = drawLooperBuilder->detachDrawLooper();
paint.setLooper(drawLooper.get());
}
if (resourceMode == ApplyToStrokeMode) {
StrokeData strokeData;
SVGLayoutSupport::applyStrokeStyleToStrokeData(strokeData, style, m_svgInlineTextBox.parent()->layoutObject());
if (style.svgStyle().vectorEffect() != VE_NON_SCALING_STROKE)
strokeData.setThickness(strokeData.thickness() * scalingFactor);
strokeData.setupPaint(&paint);
}
TextRunPaintInfo textRunPaintInfo(textRun);
textRunPaintInfo.from = startPosition;
textRunPaintInfo.to = endPosition;
float baseline = scaledFont.fontMetrics().floatAscent();
textRunPaintInfo.bounds = FloatRect(textOrigin.x(), textOrigin.y() - baseline,
textSize.width(), textSize.height());
context->drawText(scaledFont, textRunPaintInfo, textOrigin, paint);
}
void SVGInlineTextBoxPainter::paintDecoration(const PaintInfo& paintInfo, TextDecoration decoration, const SVGTextFragment& fragment)
{
if (m_svgInlineTextBox.layoutObject().style()->textDecorationsInEffect() == TextDecorationNone)
return;
if (fragment.width <= 0)
return;
// Find out which style defined the text-decoration, as its fill/stroke properties have to be used for drawing instead of ours.
LayoutObject* decorationLayoutObject = findLayoutObjectDefininingTextDecoration(m_svgInlineTextBox.parent());
const ComputedStyle& decorationStyle = decorationLayoutObject->styleRef();
if (decorationStyle.visibility() == HIDDEN)
return;
float scalingFactor = 1;
Font scaledFont;
LayoutSVGInlineText::computeNewScaledFontForStyle(decorationLayoutObject, &decorationStyle, scalingFactor, scaledFont);
ASSERT(scalingFactor);
float thickness = thicknessForDecoration(decoration, scaledFont);
if (thickness <= 0)
return;
float decorationOffset = baselineOffsetForDecoration(decoration, scaledFont.fontMetrics(), thickness);
FloatPoint decorationOrigin(fragment.x, fragment.y - decorationOffset / scalingFactor);
Path path;
path.addRect(FloatRect(decorationOrigin, FloatSize(fragment.width, thickness / scalingFactor)));
const SVGComputedStyle& svgDecorationStyle = decorationStyle.svgStyle();
for (int i = 0; i < 3; i++) {
switch (svgDecorationStyle.paintOrderType(i)) {
case PT_FILL:
if (svgDecorationStyle.hasFill()) {
SkPaint fillPaint;
if (!SVGPaintContext::paintForLayoutObject(paintInfo, decorationStyle, *decorationLayoutObject, ApplyToFillMode, fillPaint))
break;
fillPaint.setAntiAlias(true);
paintInfo.context->drawPath(path.skPath(), fillPaint);
}
break;
case PT_STROKE:
if (svgDecorationStyle.hasVisibleStroke()) {
SkPaint strokePaint;
if (!SVGPaintContext::paintForLayoutObject(paintInfo, decorationStyle, *decorationLayoutObject, ApplyToStrokeMode, strokePaint))
break;
strokePaint.setAntiAlias(true);
StrokeData strokeData;
SVGLayoutSupport::applyStrokeStyleToStrokeData(strokeData, decorationStyle, *decorationLayoutObject);
if (svgDecorationStyle.vectorEffect() == VE_NON_SCALING_STROKE)
strokeData.setThickness(strokeData.thickness() / scalingFactor);
strokeData.setupPaint(&strokePaint);
paintInfo.context->drawPath(path.skPath(), strokePaint);
}
break;
case PT_MARKERS:
break;
default:
ASSERT_NOT_REACHED();
}
}
}