bool SVGRenderSupport::updateGraphicsContext(const PaintInfo& paintInfo, GraphicsContextStateSaver& stateSaver, RenderStyle* style, RenderObject& renderer, RenderSVGResourceMode resourceMode, const AffineTransform* additionalPaintServerTransform)
{
ASSERT(style);
ASSERT(paintInfo.context == stateSaver.context());
GraphicsContext* context = paintInfo.context;
if (paintInfo.isRenderingClipPathAsMaskImage()) {
if (resourceMode == ApplyToStrokeMode)
return false;
context->setAlphaAsFloat(1);
context->setFillColor(SVGRenderStyle::initialFillPaintColor());
return true;
}
SVGPaintServer paintServer = SVGPaintServer::requestForRenderer(renderer, style, resourceMode);
if (!paintServer.isValid())
return false;
if (additionalPaintServerTransform && paintServer.isTransformDependent())
paintServer.prependTransform(*additionalPaintServerTransform);
paintServer.apply(*context, resourceMode, &stateSaver);
const SVGRenderStyle& svgStyle = style->svgStyle();
if (resourceMode == ApplyToFillMode) {
context->setAlphaAsFloat(svgStyle.fillOpacity());
context->setFillRule(svgStyle.fillRule());
} else {
context->setAlphaAsFloat(svgStyle.strokeOpacity());
applyStrokeStyleToContext(context, style, &renderer);
}
return true;
}
bool SVGLayoutSupport::updateGraphicsContext(const PaintInfo& paintInfo, GraphicsContextStateSaver& stateSaver, const ComputedStyle& style, LayoutObject& layoutObject, LayoutSVGResourceMode resourceMode, const AffineTransform* additionalPaintServerTransform)
{
ASSERT(paintInfo.context == stateSaver.context());
GraphicsContext& context = *paintInfo.context;
if (paintInfo.isRenderingClipPathAsMaskImage()) {
if (resourceMode == ApplyToStrokeMode)
return false;
context.setFillColor(SVGComputedStyle::initialFillPaintColor());
return true;
}
SVGPaintServer paintServer = SVGPaintServer::requestForLayoutObject(layoutObject, style, resourceMode);
if (!paintServer.isValid())
return false;
if (additionalPaintServerTransform && paintServer.isTransformDependent())
paintServer.prependTransform(*additionalPaintServerTransform);
const SVGComputedStyle& svgStyle = style.svgStyle();
float paintAlpha = resourceMode == ApplyToFillMode ? svgStyle.fillOpacity() : svgStyle.strokeOpacity();
paintServer.apply(context, resourceMode, paintAlpha, stateSaver);
if (resourceMode == ApplyToFillMode)
context.setFillRule(svgStyle.fillRule());
else
applyStrokeStyleToContext(context, style, layoutObject);
return true;
}
SVGPaintServer* KSVGPainterFactory::strokePaintServer(const RenderStyle* style, const RenderObject* item)
{
if (!style->svgStyle()->hasStroke())
return 0;
SVGPaint* stroke = style->svgStyle()->strokePaint();
SVGPaintServer* strokePaintServer = 0;
if (stroke->paintType() == SVGPaint::SVG_PAINTTYPE_URI) {
AtomicString id(SVGURIReference::getTarget(stroke->uri()));
strokePaintServer = getPaintServerById(item->document(), id);
SVGElement* svgElement = static_cast<SVGElement*>(item->element());
ASSERT(svgElement && svgElement->document() && svgElement->isStyled());
if (item->isRenderPath() && strokePaintServer)
strokePaintServer->addClient(static_cast<SVGStyledElement*>(svgElement));
else if (!strokePaintServer)
svgElement->document()->accessSVGExtensions()->addPendingResource(id, static_cast<SVGStyledElement*>(svgElement));
} else {
strokePaintServer = sharedSolidPaintServer();
SVGPaintServerSolid* strokePaintServerSolid = static_cast<SVGPaintServerSolid*>(strokePaintServer);
if (stroke->paintType() == SVGPaint::SVG_PAINTTYPE_CURRENTCOLOR)
strokePaintServerSolid->setColor(style->color());
else
strokePaintServerSolid->setColor(stroke->color());
// FIXME: Ideally invalid colors would never get set on the RenderStyle and this could turn into an ASSERT
if (!strokePaintServerSolid->color().isValid())
strokePaintServer = 0;
}
return strokePaintServer;
}
SVGPaintServer SVGPaintServer::requestForLayoutObject(const LayoutObject& layoutObject, const ComputedStyle& style, LayoutSVGResourceMode resourceMode)
{
ASSERT(resourceMode == ApplyToFillMode || resourceMode == ApplyToStrokeMode);
SVGPaintDescription paintDescription = requestPaint(layoutObject, style, resourceMode);
if (!paintDescription.isValid)
return invalid();
if (!paintDescription.resource)
return SVGPaintServer(paintDescription.color);
SVGPaintServer paintServer = paintDescription.resource->preparePaintServer(layoutObject);
if (paintServer.isValid())
return paintServer;
if (paintDescription.hasFallback)
return SVGPaintServer(paintDescription.color);
return invalid();
}
static inline void fillAndStrokePath(const Path& path, GraphicsContext* context, RenderStyle* style, RenderPath* object)
{
context->beginPath();
SVGPaintServer* fillPaintServer = SVGPaintServer::fillPaintServer(style, object);
if (fillPaintServer) {
context->addPath(path);
fillPaintServer->draw(context, object, ApplyToFillTargetType);
}
SVGPaintServer* strokePaintServer = SVGPaintServer::strokePaintServer(style, object);
if (strokePaintServer) {
context->addPath(path); // path is cleared when filled.
strokePaintServer->draw(context, object, ApplyToStrokeTargetType);
}
}
bool SVGPaintContext::paintForLayoutObject(
const PaintInfo& paintInfo,
const ComputedStyle& style,
const LayoutObject& layoutObject,
LayoutSVGResourceMode resourceMode,
SkPaint& paint,
const AffineTransform* additionalPaintServerTransform) {
if (paintInfo.isRenderingClipPathAsMaskImage()) {
if (resourceMode == ApplyToStrokeMode)
return false;
paint.setColor(SVGComputedStyle::initialFillPaintColor().rgb());
paint.setShader(nullptr);
return true;
}
SVGPaintServer paintServer =
SVGPaintServer::requestForLayoutObject(layoutObject, style, resourceMode);
if (!paintServer.isValid())
return false;
if (additionalPaintServerTransform && paintServer.isTransformDependent())
paintServer.prependTransform(*additionalPaintServerTransform);
const SVGComputedStyle& svgStyle = style.svgStyle();
float paintAlpha = resourceMode == ApplyToFillMode ? svgStyle.fillOpacity()
: svgStyle.strokeOpacity();
paintServer.applyToSkPaint(paint, paintAlpha);
// We always set filter quality to 'low' here. This value will only have an
// effect for patterns, which are SkPictures, so using high-order filter
// should have little effect on the overall quality.
paint.setFilterQuality(kLow_SkFilterQuality);
// TODO(fs): The color filter can set when generating a picture for a mask -
// due to color-interpolation. We could also just apply the
// color-interpolation property from the the shape itself (which could mean
// the paintserver if it has it specified), since that would be more in line
// with the spec for color-interpolation. For now, just steal it from the GC
// though.
// Additionally, it's not really safe/guaranteed to be correct, as
// something down the paint pipe may want to farther tweak the color
// filter, which could yield incorrect results. (Consider just using
// saveLayer() w/ this color filter explicitly instead.)
paint.setColorFilter(sk_ref_sp(paintInfo.context.getColorFilter()));
return true;
}
SVGPaintServer* SVGPaintServer::fillPaintServer(const RenderStyle* style, const RenderObject* item)
{
if (!style->svgStyle()->hasFill())
return 0;
SVGPaint* fill = style->svgStyle()->fillPaint();
SVGPaintServer* fillPaintServer = 0;
SVGPaint::SVGPaintType paintType = fill->paintType();
if (paintType == SVGPaint::SVG_PAINTTYPE_URI ||
paintType == SVGPaint::SVG_PAINTTYPE_URI_RGBCOLOR) {
AtomicString id(SVGURIReference::getTarget(fill->uri()));
fillPaintServer = getPaintServerById(item->document(), id);
SVGElement* svgElement = static_cast<SVGElement*>(item->node());
ASSERT(svgElement && svgElement->document() && svgElement->isStyled());
if (item->isRenderPath() && fillPaintServer)
fillPaintServer->addClient(static_cast<SVGStyledElement*>(svgElement));
else if (!fillPaintServer && paintType == SVGPaint::SVG_PAINTTYPE_URI)
svgElement->document()->accessSVGExtensions()->addPendingResource(id, static_cast<SVGStyledElement*>(svgElement));
}
if (paintType != SVGPaint::SVG_PAINTTYPE_URI && !fillPaintServer) {
fillPaintServer = sharedSolidPaintServer();
SVGPaintServerSolid* fillPaintServerSolid = static_cast<SVGPaintServerSolid*>(fillPaintServer);
if (paintType == SVGPaint::SVG_PAINTTYPE_CURRENTCOLOR)
fillPaintServerSolid->setColor(style->color());
else
fillPaintServerSolid->setColor(fill->color());
// FIXME: Ideally invalid colors would never get set on the RenderStyle and this could turn into an ASSERT
if (!fillPaintServerSolid->color().isValid())
fillPaintServer = 0;
}
if (!fillPaintServer) {
// default value (black), see bug 11017
fillPaintServer = sharedSolidPaintServer();
static_cast<SVGPaintServerSolid*>(fillPaintServer)->setColor(Color::black);
}
return fillPaintServer;
}
void Font::drawTextUsingSVGFont(GraphicsContext* context, const TextRun& run,
const FloatPoint& point, int from, int to) const
{
SVGFontElement* fontElement = 0;
SVGFontFaceElement* fontFaceElement = 0;
if (const SVGFontData* fontData = svgFontAndFontFaceElementForFontData(primaryFont(), fontFaceElement, fontElement)) {
if (!fontElement)
return;
SVGTextRunWalkerDrawTextData data;
FloatPoint currentPoint = point;
float scale = convertEmUnitToPixel(size(), fontFaceElement->unitsPerEm(), 1.0f);
SVGPaintServer* activePaintServer = run.activePaintServer();
// If renderObject is not set, we're dealing for HTML text rendered using SVG Fonts.
if (!run.referencingRenderObject()) {
ASSERT(!activePaintServer);
// TODO: We're only supporting simple filled HTML text so far.
SVGPaintServerSolid* solidPaintServer = SVGPaintServer::sharedSolidPaintServer();
solidPaintServer->setColor(context->fillColor());
activePaintServer = solidPaintServer;
}
ASSERT(activePaintServer);
int charsConsumed;
String glyphName;
bool isVerticalText = false;
float xStartOffset = floatWidthOfSubStringUsingSVGFont(this, run, 0, run.rtl() ? to : 0, run.rtl() ? run.length() : from, charsConsumed, glyphName);
FloatPoint glyphOrigin;
String language;
// TODO: language matching & svg glyphs should be possible for HTML text, too.
if (run.referencingRenderObject()) {
isVerticalText = isVerticalWritingMode(run.referencingRenderObject()->style()->svgStyle());
if (SVGElement* element = static_cast<SVGElement*>(run.referencingRenderObject()->element()))
language = element->getAttribute(XMLNames::langAttr);
}
if (!isVerticalText) {
glyphOrigin.setX(fontData->horizontalOriginX() * scale);
glyphOrigin.setY(fontData->horizontalOriginY() * scale);
}
data.extraCharsAvailable = 0;
data.charsConsumed = 0;
SVGTextRunWalker<SVGTextRunWalkerDrawTextData> runWalker(fontData, fontElement, data, drawTextUsingSVGFontCallback, drawTextMissingGlyphCallback);
runWalker.walk(run, isVerticalText, language, from, to);
SVGPaintTargetType targetType = context->textDrawingMode() == cTextStroke ? ApplyToStrokeTargetType : ApplyToFillTargetType;
unsigned numGlyphs = data.glyphIdentifiers.size();
unsigned fallbackCharacterIndex = 0;
for (unsigned i = 0; i < numGlyphs; ++i) {
const SVGGlyphIdentifier& identifier = data.glyphIdentifiers[run.rtl() ? numGlyphs - i - 1 : i];
if (identifier.isValid) {
// FIXME: Support arbitary SVG content as glyph (currently limited to <glyph d="..."> situations).
if (!identifier.pathData.isEmpty()) {
context->save();
if (isVerticalText) {
glyphOrigin.setX(identifier.verticalOriginX * scale);
glyphOrigin.setY(identifier.verticalOriginY * scale);
}
context->translate(xStartOffset + currentPoint.x() + glyphOrigin.x(), currentPoint.y() + glyphOrigin.y());
context->scale(FloatSize(scale, -scale));
context->beginPath();
context->addPath(identifier.pathData);
if (activePaintServer->setup(context, run.referencingRenderObject(), targetType)) {
// Spec: Any properties specified on a text elements which represents a length, such as the
// 'stroke-width' property, might produce surprising results since the length value will be
// processed in the coordinate system of the glyph. (TODO: What other lengths? miter-limit? dash-offset?)
if (targetType == ApplyToStrokeTargetType && scale != 0.0f)
context->setStrokeThickness(context->strokeThickness() / scale);
activePaintServer->renderPath(context, run.referencingRenderObject(), targetType);
activePaintServer->teardown(context, run.referencingRenderObject(), targetType);
}
context->restore();
}
if (isVerticalText)
currentPoint.move(0.0f, identifier.verticalAdvanceY * scale);
else
currentPoint.move(identifier.horizontalAdvanceX * scale, 0.0f);
} else {
// Handle system font fallback
FontDescription fontDescription(context->font().fontDescription());
fontDescription.setFamily(FontFamily());
Font font(fontDescription, 0, 0); // spacing handled by SVG text code.
font.update(context->font().fontSelector());
TextRun fallbackCharacterRun(run);
fallbackCharacterRun.setText(&data.fallbackCharacters[run.rtl() ? data.fallbackCharacters.size() - fallbackCharacterIndex - 1 : fallbackCharacterIndex], 1);
font.drawText(context, fallbackCharacterRun, currentPoint);
if (isVerticalText)
currentPoint.move(0.0f, font.floatWidth(fallbackCharacterRun));
else
currentPoint.move(font.floatWidth(fallbackCharacterRun), 0.0f);
fallbackCharacterIndex++;
}
}
}
}
void paintSVGInlineFlow(InlineFlowBox* flow, RenderObject* object, RenderObject::PaintInfo& paintInfo, int tx, int ty)
{
if (paintInfo.context->paintingDisabled())
return;
paintInfo.context->save();
paintInfo.context->concatCTM(object->localTransform());
FloatRect boundingBox(tx + flow->xPos(), ty + flow->yPos(), flow->width(), flow->height());
SVGElement* svgElement = static_cast<SVGElement*>(object->element());
ASSERT(svgElement && svgElement->document() && svgElement->isStyled());
SVGStyledElement* styledElement = static_cast<SVGStyledElement*>(svgElement);
const SVGRenderStyle* svgStyle = object->style()->svgStyle();
AtomicString filterId(SVGURIReference::getTarget(svgStyle->filter()));
AtomicString clipperId(SVGURIReference::getTarget(svgStyle->clipPath()));
AtomicString maskerId(SVGURIReference::getTarget(svgStyle->maskElement()));
#if ENABLE(SVG_EXPERIMENTAL_FEATURES)
SVGResourceFilter* filter = getFilterById(object->document(), filterId);
#endif
SVGResourceClipper* clipper = getClipperById(object->document(), clipperId);
SVGResourceMasker* masker = getMaskerById(object->document(), maskerId);
#if ENABLE(SVG_EXPERIMENTAL_FEATURES)
if (filter)
filter->prepareFilter(paintInfo.context, boundingBox);
else if (!filterId.isEmpty())
svgElement->document()->accessSVGExtensions()->addPendingResource(filterId, styledElement);
#endif
if (clipper) {
clipper->addClient(styledElement);
clipper->applyClip(paintInfo.context, boundingBox);
} else if (!clipperId.isEmpty())
svgElement->document()->accessSVGExtensions()->addPendingResource(clipperId, styledElement);
if (masker) {
masker->addClient(styledElement);
masker->applyMask(paintInfo.context, boundingBox);
} else if (!maskerId.isEmpty())
svgElement->document()->accessSVGExtensions()->addPendingResource(maskerId, styledElement);
RenderObject::PaintInfo pi(paintInfo);
if (!flow->isRootInlineBox())
pi.rect = (object->localTransform()).inverse().mapRect(pi.rect);
float opacity = object->style()->opacity();
if (opacity < 1.0f) {
paintInfo.context->clip(enclosingIntRect(boundingBox));
paintInfo.context->beginTransparencyLayer(opacity);
}
SVGPaintServer* fillPaintServer = KSVGPainterFactory::fillPaintServer(object->style(), object);
if (fillPaintServer) {
if (fillPaintServer->setup(pi.context, object, ApplyToFillTargetType, true)) {
flow->InlineFlowBox::paint(pi, tx, ty);
fillPaintServer->teardown(pi.context, object, ApplyToFillTargetType, true);
}
}
SVGPaintServer* strokePaintServer = KSVGPainterFactory::strokePaintServer(object->style(), object);
if (strokePaintServer) {
if (strokePaintServer->setup(pi.context, object, ApplyToStrokeTargetType, true)) {
flow->InlineFlowBox::paint(pi, tx, ty);
strokePaintServer->teardown(pi.context, object, ApplyToStrokeTargetType, true);
}
}
#if ENABLE(SVG_EXPERIMENTAL_FEATURES)
if (filter)
filter->applyFilter(paintInfo.context, boundingBox);
#endif
if (opacity < 1.0f)
paintInfo.context->endTransparencyLayer();
paintInfo.context->restore();
}
void RenderPath::paint(PaintInfo& paintInfo, int, int)
{
if (paintInfo.context->paintingDisabled() || (paintInfo.phase != PaintPhaseForeground) || style()->visibility() == HIDDEN || m_path.isEmpty())
return;
paintInfo.context->save();
paintInfo.context->concatCTM(localTransform());
FloatRect strokeBBox = relativeBBox(true);
SVGElement* svgElement = static_cast<SVGElement*>(element());
ASSERT(svgElement && svgElement->document() && svgElement->isStyled());
SVGStyledElement* styledElement = static_cast<SVGStyledElement*>(svgElement);
const SVGRenderStyle* svgStyle = style()->svgStyle();
AtomicString filterId(SVGURIReference::getTarget(svgStyle->filter()));
AtomicString clipperId(SVGURIReference::getTarget(svgStyle->clipPath()));
AtomicString maskerId(SVGURIReference::getTarget(svgStyle->maskElement()));
#if ENABLE(SVG_EXPERIMENTAL_FEATURES)
SVGResourceFilter* filter = getFilterById(document(), filterId);
#endif
SVGResourceClipper* clipper = getClipperById(document(), clipperId);
SVGResourceMasker* masker = getMaskerById(document(), maskerId);
#if ENABLE(SVG_EXPERIMENTAL_FEATURES)
if (filter)
filter->prepareFilter(paintInfo.context, strokeBBox);
else if (!filterId.isEmpty())
svgElement->document()->accessSVGExtensions()->addPendingResource(filterId, styledElement);
#endif
if (clipper) {
clipper->addClient(styledElement);
clipper->applyClip(paintInfo.context, strokeBBox);
} else if (!clipperId.isEmpty())
svgElement->document()->accessSVGExtensions()->addPendingResource(clipperId, styledElement);
if (masker) {
masker->addClient(styledElement);
masker->applyMask(paintInfo.context, strokeBBox);
} else if (!maskerId.isEmpty())
svgElement->document()->accessSVGExtensions()->addPendingResource(maskerId, styledElement);
paintInfo.context->beginPath();
SVGPaintServer* fillPaintServer = KSVGPainterFactory::fillPaintServer(style(), this);
if (fillPaintServer) {
paintInfo.context->addPath(m_path);
fillPaintServer->draw(paintInfo.context, this, ApplyToFillTargetType);
}
SVGPaintServer* strokePaintServer = KSVGPainterFactory::strokePaintServer(style(), this);
if (strokePaintServer) {
paintInfo.context->addPath(m_path); // path is cleared when filled.
strokePaintServer->draw(paintInfo.context, this, ApplyToStrokeTargetType);
}
if (styledElement->supportsMarkers())
m_markerBounds = drawMarkersIfNeeded(paintInfo.context, paintInfo.rect, m_path);
#if ENABLE(SVG_EXPERIMENTAL_FEATURES)
// actually apply the filter
if (filter)
filter->applyFilter(paintInfo.context, strokeBBox);
#endif
paintInfo.context->restore();
}