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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
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diff --git a/layout/svg/SVGImageContext.h b/layout/svg/SVGImageContext.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZILLA_SVGCONTEXT_H_
+#define MOZILLA_SVGCONTEXT_H_
+
+#include "mozilla/Maybe.h"
+#include "SVGPreserveAspectRatio.h"
+#include "Units.h"
+
+namespace mozilla {
+
+// SVG image-specific rendering context. For imgIContainer::Draw.
+// Used to pass information such as
+// - viewport information from CSS, and
+// - overridden attributes from an SVG <image> element
+// to the image's internal SVG document when it's drawn.
+class SVGImageContext
+{
+public:
+ SVGImageContext()
+ : mGlobalOpacity(1.0)
+ { }
+
+ // Note: 'aIsPaintingSVGImageElement' should be used to indicate whether
+ // the SVG image in question is being painted for an SVG <image> element.
+ SVGImageContext(CSSIntSize aViewportSize,
+ Maybe<SVGPreserveAspectRatio> aPreserveAspectRatio,
+ gfxFloat aOpacity = 1.0,
+ bool aIsPaintingSVGImageElement = false)
+ : mViewportSize(aViewportSize)
+ , mPreserveAspectRatio(aPreserveAspectRatio)
+ , mGlobalOpacity(aOpacity)
+ , mIsPaintingSVGImageElement(aIsPaintingSVGImageElement)
+ { }
+
+ const CSSIntSize& GetViewportSize() const {
+ return mViewportSize;
+ }
+
+ const Maybe<SVGPreserveAspectRatio>& GetPreserveAspectRatio() const {
+ return mPreserveAspectRatio;
+ }
+
+ gfxFloat GetGlobalOpacity() const {
+ return mGlobalOpacity;
+ }
+
+ bool IsPaintingForSVGImageElement() const {
+ return mIsPaintingSVGImageElement;
+ }
+
+ bool operator==(const SVGImageContext& aOther) const {
+ return mViewportSize == aOther.mViewportSize &&
+ mPreserveAspectRatio == aOther.mPreserveAspectRatio &&
+ mGlobalOpacity == aOther.mGlobalOpacity &&
+ mIsPaintingSVGImageElement == aOther.mIsPaintingSVGImageElement;
+ }
+
+ bool operator!=(const SVGImageContext& aOther) const {
+ return !(*this == aOther);
+ }
+
+ uint32_t Hash() const {
+ return HashGeneric(mViewportSize.width,
+ mViewportSize.height,
+ mPreserveAspectRatio.map(HashPAR).valueOr(0),
+ HashBytes(&mGlobalOpacity, sizeof(gfxFloat)),
+ mIsPaintingSVGImageElement);
+ }
+
+private:
+ static uint32_t HashPAR(const SVGPreserveAspectRatio& aPAR) {
+ return aPAR.Hash();
+ }
+
+ // NOTE: When adding new member-vars, remember to update Hash() & operator==.
+ CSSIntSize mViewportSize;
+ Maybe<SVGPreserveAspectRatio> mPreserveAspectRatio;
+ gfxFloat mGlobalOpacity;
+ bool mIsPaintingSVGImageElement;
+};
+
+} // namespace mozilla
+
+#endif // MOZILLA_SVGCONTEXT_H_