skia2/modules/svg/include/SkSVGImage.h
Tyler Denniston 1f4cd07af8 [svg] Support preserveAspectRatio for images
https://www.w3.org/TR/SVG11/struct.html#ImageElement
https://www.w3.org/TR/SVG11/coords.html#PreserveAspectRatioAttribute

We already had a function to compute the appropriate matrix, and since
we can share the functionality with other elements that establish a new
viewport (including svg, symbol, and a few others), this CL moves the
function to the SVG node base class.

Relevant test for images is struct-image-06.

Bug: skia:10842
Change-Id: I5d6261210d03959e28d0bd7189da7f4ea53abc03
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/366398
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2021-02-05 15:59:10 +00:00

48 lines
1.6 KiB
C++

/*
* Copyright 2021 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkSVGImage_DEFINED
#define SkSVGImage_DEFINED
#include "modules/svg/include/SkSVGTransformableNode.h"
#include "modules/svg/include/SkSVGTypes.h"
class SkSVGImage final : public SkSVGTransformableNode {
public:
static sk_sp<SkSVGImage> Make() {
return sk_sp<SkSVGImage>(new SkSVGImage());
}
void appendChild(sk_sp<SkSVGNode>) override {
SkDebugf("cannot append child nodes to this element.\n");
}
bool onPrepareToRender(SkSVGRenderContext*) const override;
void onRender(const SkSVGRenderContext&) const override;
SkPath onAsPath(const SkSVGRenderContext&) const override;
SkRect onObjectBoundingBox(const SkSVGRenderContext&) const override;
SVG_ATTR(X , SkSVGLength , SkSVGLength(0))
SVG_ATTR(Y , SkSVGLength , SkSVGLength(0))
SVG_ATTR(Width , SkSVGLength , SkSVGLength(0))
SVG_ATTR(Height , SkSVGLength , SkSVGLength(0))
SVG_ATTR(Href , SkSVGIRI , SkSVGIRI())
SVG_ATTR(PreserveAspectRatio, SkSVGPreserveAspectRatio, SkSVGPreserveAspectRatio())
protected:
bool parseAndSetAttribute(const char*, const char*) override;
private:
SkSVGImage() : INHERITED(SkSVGTag::kImage) {}
SkRect resolveImageRect(const SkRect&, const SkRect&) const;
using INHERITED = SkSVGTransformableNode;
};
#endif // SkSVGImage_DEFINED