skia2/modules/svg/include/SkSVGUse.h
Tyler Denniston f548a028ce [svg] Implement gradientUnits="objectBoundingBox"
Currently only works properly when filling rects, since that is the only
node that implements bounds computation with this CL.

Summary of changes:

- Scale gradient coords by object bounds when units are
  kObjectBoundingBox.
- Make fGradientUnits protected instead of private.
- Change default value of fGradientUnits to kObjectBoundingBox, which
  is the default according to the spec.
- Change SkSVGNode::onObjectBoundingBox to take a full render context
  instead of length context.
- Implement bounds computation for SkSVGRect, SkSVGContainer and
  SkSVGUse.

Bug: skia:10842
Change-Id: I2e999985e67644e50da7f681fde190bcf4823eec
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/329223
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Tyler Denniston <tdenniston@google.com>
2020-10-27 19:56:28 +00:00

49 lines
1.3 KiB
C++

/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkSVGUse_DEFINED
#define SkSVGUse_DEFINED
#include "modules/svg/include/SkSVGTransformableNode.h"
#include "modules/svg/include/SkSVGTypes.h"
/**
* Implements support for <use> (reference) elements.
* (https://www.w3.org/TR/SVG11/struct.html#UseElement)
*/
class SkSVGUse final : public SkSVGTransformableNode {
public:
~SkSVGUse() override = default;
static sk_sp<SkSVGUse> Make() { return sk_sp<SkSVGUse>(new SkSVGUse()); }
void appendChild(sk_sp<SkSVGNode>) override;
void setHref(const SkSVGStringType&);
void setX(const SkSVGLength&);
void setY(const SkSVGLength&);
protected:
void onSetAttribute(SkSVGAttribute, const SkSVGValue&) override;
bool onPrepareToRender(SkSVGRenderContext*) const override;
void onRender(const SkSVGRenderContext&) const override;
SkPath onAsPath(const SkSVGRenderContext&) const override;
SkRect onObjectBoundingBox(const SkSVGRenderContext&) const override;
private:
SkSVGUse();
SkSVGStringType fHref;
SkSVGLength fX = SkSVGLength(0);
SkSVGLength fY = SkSVGLength(0);
using INHERITED = SkSVGTransformableNode;
};
#endif // SkSVGUse_DEFINED