[SVGDom] Add viewBox support

The main feature is <svg> viewBox and proper viewport support, but the CL
touches a few other things:

* refactor SkSVGRenderContext to auto-restore canvas state, and split the
  presentation bits into a separate CoW SkSVGPresentationContext

* introduce SkSVGNode::onPrepareToRender(), as a way for nodes to push their
  custom state before the actual onRender() call (instead of relying on
  non-virtual SkSVGNode to know about all possible state bits)

* add a "Type" suffix to SVG types, to disambiguate (e.g. SkSVGRectType vs.
  SkSVGRect)

R=robertphillips@google.com,stephana@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2222793002

Review-Url: https://codereview.chromium.org/2222793002

1 files changed, 5 insertions, 5 deletions

diff --git a/experimental/svg/model/SkSVGAttribute.cpp b/experimental/svg/model/SkSVGAttribute.cpp
index 79c355176f..2f1cace773 100644
--- a/experimental/svg/model/SkSVGAttribute.cpp
+++ b/experimental/svg/model/SkSVGAttribute.cpp
@@ -12,23 +12,23 @@ SkSVGPresentationAttributes::SkSVGPresentationAttributes()
     : fFillIsSet(false)
     , fStrokeIsSet(false) { }
 
-void SkSVGPresentationAttributes::setFill(const SkSVGColor& c) {
+void SkSVGPresentationAttributes::setFill(const SkSVGColorType& c) {
     fFill = c;
     fFillIsSet = true;
 }
 
-void SkSVGPresentationAttributes::setStroke(const SkSVGColor& c) {
+void SkSVGPresentationAttributes::setStroke(const SkSVGColorType& c) {
     fStroke = c;
     fStrokeIsSet = true;
 }
 
 
-void SkSVGPresentationAttributes::applyTo(SkTCopyOnFirstWrite<SkSVGRenderContext>& ctx) const {
+void SkSVGPresentationAttributes::applyTo(SkSVGRenderContext* ctx) const {
     if (fFillIsSet) {
-        ctx.writable()->setFillColor(fFill);
+        ctx->writablePresentationContext()->setFillColor(fFill);
     }
 
     if (fStrokeIsSet) {
-        ctx.writable()->setStrokeColor(fStroke);
+        ctx->writablePresentationContext()->setStrokeColor(fStroke);
     }
 }