зеркало из https://github.com/mozilla/gecko-dev.git
72 строки
2.8 KiB
C++
72 строки
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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_dom_EffectsInfo_h
|
|
#define mozilla_dom_EffectsInfo_h
|
|
|
|
#include "nsRect.h"
|
|
|
|
namespace mozilla::dom {
|
|
|
|
/**
|
|
* An EffectsInfo contains information for a remote browser about the graphical
|
|
* effects that are being applied to it by ancestor browsers in different
|
|
* processes.
|
|
*/
|
|
class EffectsInfo {
|
|
public:
|
|
EffectsInfo() { *this = EffectsInfo::FullyHidden(); }
|
|
|
|
static EffectsInfo VisibleWithinRect(
|
|
const nsRect& aVisibleRect, const Scale2D& aRasterScale,
|
|
const ParentLayerToScreenScale2D& aTransformToAncestorScale) {
|
|
return EffectsInfo{aVisibleRect, aRasterScale, aTransformToAncestorScale};
|
|
}
|
|
static EffectsInfo FullyHidden() {
|
|
return EffectsInfo{nsRect(), Scale2D(), ParentLayerToScreenScale2D()};
|
|
}
|
|
|
|
bool operator==(const EffectsInfo& aOther) {
|
|
return mVisibleRect == aOther.mVisibleRect &&
|
|
mRasterScale == aOther.mRasterScale &&
|
|
mTransformToAncestorScale == aOther.mTransformToAncestorScale;
|
|
}
|
|
bool operator!=(const EffectsInfo& aOther) { return !(*this == aOther); }
|
|
|
|
bool IsVisible() const { return !mVisibleRect.IsEmpty(); }
|
|
|
|
// The visible rect of this browser relative to the root frame. If this is
|
|
// empty then the browser can be considered invisible.
|
|
nsRect mVisibleRect;
|
|
// The desired scale factors to apply to rasterized content to match
|
|
// transforms applied in ancestor browsers. This gets propagated into the
|
|
// scale in StackingContextHelper.
|
|
Scale2D mRasterScale;
|
|
// TransformToAncestorScale to be set on FrameMetrics. It includes CSS
|
|
// transform scales and cumulative presshell resolution.
|
|
ParentLayerToScreenScale2D mTransformToAncestorScale;
|
|
// The difference between mScaleX/Y and mTransformToAncestorScale is the way
|
|
// that CSS transforms contribute to the scale. mTransformToAncestorScale
|
|
// includes the exact scale factors of the combined CSS transform whereas
|
|
// mScaleX/Y tries to take into account animating transform scales by picking
|
|
// a larger scale so that we don't have to re-rasterize every frame but rather
|
|
// we can just scale down content rasterized on a previous frame.
|
|
|
|
// If you add new fields here, you must also update operator== and
|
|
// TabMessageUtils.
|
|
|
|
private:
|
|
EffectsInfo(const nsRect& aVisibleRect, const Scale2D& aRasterScale,
|
|
const ParentLayerToScreenScale2D& aTransformToAncestorScale)
|
|
: mVisibleRect(aVisibleRect),
|
|
mRasterScale(aRasterScale),
|
|
mTransformToAncestorScale(aTransformToAncestorScale) {}
|
|
};
|
|
|
|
} // namespace mozilla::dom
|
|
|
|
#endif // mozilla_dom_EffectsInfo_h
|