зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1064843 part 8 - Add frame class for backdrop frame. r=dbaron
--HG-- extra : source : 2418fec124dddb2268e7118e36d002904a1ede34
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Коммит
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@ -126,6 +126,7 @@ GK_ATOM(autoplay, "autoplay")
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GK_ATOM(autorepeatbutton, "autorepeatbutton")
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GK_ATOM(axis, "axis")
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GK_ATOM(b, "b")
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GK_ATOM(backdropFrame, "BackdropFrame")
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GK_ATOM(background, "background")
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GK_ATOM(base, "base")
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GK_ATOM(basefont, "basefont")
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@ -115,6 +115,7 @@ UNIFIED_SOURCES += [
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'FrameChildList.cpp',
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'MathMLTextRunFactory.cpp',
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'nsAbsoluteContainingBlock.cpp',
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'nsBackdropFrame.cpp',
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'nsBlockFrame.cpp',
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'nsBlockReflowContext.cpp',
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'nsBlockReflowState.cpp',
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@ -0,0 +1,92 @@
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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// vim:cindent:ts=2:et:sw=2:
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* rendering object for CSS "::backdrop" */
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#include "nsBackdropFrame.h"
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using namespace mozilla;
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NS_IMPL_FRAMEARENA_HELPERS(nsBackdropFrame)
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/* virtual */ nsIAtom*
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nsBackdropFrame::GetType() const
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{
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return nsGkAtoms::backdropFrame;
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}
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#ifdef DEBUG_FRAME_DUMP
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nsresult
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nsBackdropFrame::GetFrameName(nsAString& aResult) const
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{
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return MakeFrameName(NS_LITERAL_STRING("Backdrop"), aResult);
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}
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#endif
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/* virtual */ nsStyleContext*
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nsBackdropFrame::GetParentStyleContext(nsIFrame** aProviderFrame) const
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{
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// Style context of backdrop pseudo-element does not inherit from
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// any element, per the Fullscreen API spec.
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*aProviderFrame = nullptr;
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return nullptr;
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}
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/* virtual */ void
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nsBackdropFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists)
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{
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DO_GLOBAL_REFLOW_COUNT_DSP("nsBackdropFrame");
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// We want this frame to always be there even if its display value is
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// none or contents so that we can respond to style change on it. To
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// support those values, we skip painting ourselves in those cases.
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auto display = StyleDisplay()->mDisplay;
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if (display != NS_STYLE_DISPLAY_NONE &&
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display != NS_STYLE_DISPLAY_CONTENTS) {
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DisplayBorderBackgroundOutline(aBuilder, aLists);
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}
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}
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/* virtual */ LogicalSize
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nsBackdropFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
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WritingMode aWM,
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const LogicalSize& aCBSize,
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nscoord aAvailableISize,
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const LogicalSize& aMargin,
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const LogicalSize& aBorder,
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const LogicalSize& aPadding,
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bool aShrinkWrap)
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{
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// Note that this frame is a child of the viewport frame.
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LogicalSize result(aWM, 0xdeadbeef, NS_UNCONSTRAINEDSIZE);
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if (aShrinkWrap) {
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result.ISize(aWM) = 0;
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} else {
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result.ISize(aWM) = aAvailableISize - aMargin.ISize(aWM) -
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aBorder.ISize(aWM) - aPadding.ISize(aWM);
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}
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return result;
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}
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/* virtual */ void
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nsBackdropFrame::Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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MarkInReflow();
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DO_GLOBAL_REFLOW_COUNT("nsBackdropFrame");
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DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
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// Note that this frame is a child of the viewport frame.
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WritingMode wm = aReflowState.GetWritingMode();
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LogicalMargin borderPadding = aReflowState.ComputedLogicalBorderPadding();
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nscoord isize = aReflowState.ComputedISize() + borderPadding.IStartEnd(wm);
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nscoord bsize = aReflowState.ComputedBSize() + borderPadding.BStartEnd(wm);
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aDesiredSize.SetSize(wm, LogicalSize(wm, isize, bsize));
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aStatus = NS_FRAME_COMPLETE;
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}
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@ -0,0 +1,46 @@
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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// vim:cindent:ts=2:et:sw=2:
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* rendering object for CSS "::backdrop" */
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#ifndef nsBackdropFrame_h___
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#define nsBackdropFrame_h___
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#include "nsFrame.h"
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class nsBackdropFrame final : public nsFrame
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{
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public:
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NS_DECL_FRAMEARENA_HELPERS
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explicit nsBackdropFrame(nsStyleContext* aContext)
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: nsFrame(aContext) { }
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// nsIFrame overrides
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virtual nsIAtom* GetType() const override;
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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virtual nsStyleContext*
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GetParentStyleContext(nsIFrame** aProviderFrame) const override;
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists) override;
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virtual LogicalSize ComputeAutoSize(nsRenderingContext *aRenderingContext,
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WritingMode aWM,
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const LogicalSize& aCBSize,
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nscoord aAvailableISize,
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const LogicalSize& aMargin,
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const LogicalSize& aBorder,
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const LogicalSize& aPadding,
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bool aShrinkWrap) override;
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virtual void Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus) override;
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};
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#endif // nsBackdropFrame_h___
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@ -5,6 +5,7 @@
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FRAME_ID(BRFrame)
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FRAME_ID(nsAutoRepeatBoxFrame)
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FRAME_ID(nsBCTableCellFrame)
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FRAME_ID(nsBackdropFrame)
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FRAME_ID(nsBlockFrame)
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FRAME_ID(nsBox)
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FRAME_ID(nsBoxFrame)
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