2017-10-27 17:33:53 +00:00
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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2012-05-21 11:12:37 +00:00
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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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2009-09-19 10:20:42 +00:00
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/* rendering object that goes directly inside the document's scrollbars */
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2009-10-08 06:18:18 +00:00
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#ifndef nsCanvasFrame_h___
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#define nsCanvasFrame_h___
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2009-09-19 10:20:42 +00:00
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2012-09-14 16:10:08 +00:00
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#include "mozilla/Attributes.h"
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2013-09-24 10:04:14 +00:00
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#include "mozilla/EventForwards.h"
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2011-12-27 20:18:48 +00:00
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#include "nsContainerFrame.h"
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2009-09-19 10:20:42 +00:00
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#include "nsIScrollPositionListener.h"
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2011-04-08 01:04:40 +00:00
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#include "nsDisplayList.h"
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2014-06-03 07:08:25 +00:00
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#include "nsIAnonymousContentCreator.h"
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2017-03-20 06:41:55 +00:00
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#include "gfxPrefs.h"
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2009-09-19 10:20:42 +00:00
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2010-04-10 20:10:12 +00:00
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class nsPresContext;
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2017-06-09 19:14:53 +00:00
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class gfxContext;
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2010-04-10 20:10:12 +00:00
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2009-09-19 10:20:42 +00:00
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/**
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* Root frame class.
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*
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* The root frame is the parent frame for the document element's frame.
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* It only supports having a single child frame which must be an area
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2016-06-10 00:56:23 +00:00
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* frame.
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* @note nsCanvasFrame keeps overflow container continuations of its child
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* frame in the main child list.
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2009-09-19 10:20:42 +00:00
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*/
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2015-03-21 16:28:04 +00:00
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class nsCanvasFrame final : public nsContainerFrame,
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public nsIScrollPositionListener,
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public nsIAnonymousContentCreator
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{
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public:
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2018-03-22 18:20:41 +00:00
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explicit nsCanvasFrame(ComputedStyle* aStyle)
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: nsContainerFrame(aStyle, kClassID)
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, mDoPaintFocus(false)
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, mAddedScrollPositionListener(false)
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{}
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2009-09-19 10:20:42 +00:00
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsCanvasFrame)
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2009-09-19 10:20:42 +00:00
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2017-11-07 00:20:33 +00:00
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virtual void DestroyFrom(nsIFrame* aDestructRoot, PostDestroyData& aPostDestroyData) override;
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2009-09-19 10:20:42 +00:00
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2014-05-28 19:36:58 +00:00
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virtual void SetInitialChildList(ChildListID aListID,
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nsFrameList& aChildList) override;
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virtual void AppendFrames(ChildListID aListID,
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nsFrameList& aFrameList) override;
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virtual void InsertFrames(ChildListID aListID,
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nsIFrame* aPrevFrame,
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nsFrameList& aFrameList) override;
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#ifdef DEBUG
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virtual void RemoveFrame(ChildListID aListID,
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nsIFrame* aOldFrame) override;
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#endif
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2009-09-19 10:20:42 +00:00
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2017-06-09 19:14:53 +00:00
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virtual nscoord GetMinISize(gfxContext *aRenderingContext) override;
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virtual nscoord GetPrefISize(gfxContext *aRenderingContext) override;
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2014-05-13 00:47:52 +00:00
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virtual void Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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virtual bool IsFrameOfType(uint32_t aFlags) const override
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{
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return nsContainerFrame::IsFrameOfType(aFlags &
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~(nsIFrame::eCanContainOverflowContainers));
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}
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2014-06-03 07:08:25 +00:00
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// nsIAnonymousContentCreator
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virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) override;
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virtual void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements, uint32_t aFilter) override;
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2014-06-03 07:08:25 +00:00
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2014-10-28 10:15:25 +00:00
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mozilla::dom::Element* GetCustomContentContainer() const
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{
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return mCustomContentContainer;
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}
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2015-01-20 18:20:04 +00:00
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/**
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* Unhide the CustomContentContainer. This call only has an effect if
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* mCustomContentContainer is non-null.
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*/
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void ShowCustomContentContainer();
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/**
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* Hide the CustomContentContainer. This call only has an effect if
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* mCustomContentContainer is non-null.
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*/
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void HideCustomContentContainer();
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2009-10-08 06:18:18 +00:00
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/** SetHasFocus tells the CanvasFrame to draw with focus ring
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2011-10-17 14:59:28 +00:00
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* @param aHasFocus true to show focus ring, false to hide it
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2009-10-08 06:18:18 +00:00
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*/
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2011-09-29 06:19:26 +00:00
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NS_IMETHOD SetHasFocus(bool aHasFocus);
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2009-10-08 06:18:18 +00:00
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2013-02-14 11:12:27 +00:00
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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2009-09-19 10:20:42 +00:00
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2015-12-04 03:16:59 +00:00
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void PaintFocus(mozilla::gfx::DrawTarget* aRenderingContext, nsPoint aPt);
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2009-09-19 10:20:42 +00:00
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// nsIScrollPositionListener
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virtual void ScrollPositionWillChange(nscoord aX, nscoord aY) override;
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virtual void ScrollPositionDidChange(nscoord aX, nscoord aY) override {}
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2009-09-19 10:20:42 +00:00
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2014-01-05 23:31:14 +00:00
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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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2014-02-18 07:47:48 +00:00
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virtual nsresult GetContentForEvent(mozilla::WidgetEvent* aEvent,
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nsIContent** aContent) override;
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nsRect CanvasArea() const;
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protected:
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2017-02-28 17:58:30 +00:00
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// Utility function to propagate the WritingMode from our first child to
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// 'this' and all its ancestors.
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void MaybePropagateRootElementWritingMode();
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2009-09-19 10:20:42 +00:00
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// Data members
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bool mDoPaintFocus;
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bool mAddedScrollPositionListener;
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2014-06-03 07:08:25 +00:00
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2014-10-28 10:15:25 +00:00
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nsCOMPtr<mozilla::dom::Element> mCustomContentContainer;
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2009-09-19 10:20:42 +00:00
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};
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2010-07-15 21:07:53 +00:00
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/**
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* Override nsDisplayBackground methods so that we pass aBGClipRect to
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* PaintBackground, covering the whole overflow area.
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* We can also paint an "extra background color" behind the normal
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* background.
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*/
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2015-09-19 01:45:05 +00:00
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class nsDisplayCanvasBackgroundColor : public nsDisplaySolidColorBase {
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public:
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nsDisplayCanvasBackgroundColor(nsDisplayListBuilder* aBuilder, nsIFrame *aFrame)
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: nsDisplaySolidColorBase(aBuilder, aFrame, NS_RGBA(0,0,0,0))
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{
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}
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2011-09-29 06:19:26 +00:00
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virtual bool ComputeVisibility(nsDisplayListBuilder* aBuilder,
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nsRegion* aVisibleRegion) override
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{
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return NS_GET_A(mColor) > 0;
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2010-07-15 21:08:06 +00:00
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}
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2017-08-24 15:09:44 +00:00
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virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder,
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bool* aSnap) const override
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{
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nsCanvasFrame* frame = static_cast<nsCanvasFrame*>(mFrame);
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*aSnap = true;
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return frame->CanvasArea() + ToReferenceFrame();
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}
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2010-10-11 18:03:12 +00:00
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virtual void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
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HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames) override
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2010-10-11 18:03:12 +00:00
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{
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// We need to override so we don't consider border-radius.
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aOutFrames->AppendElement(mFrame);
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}
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2017-03-20 06:41:55 +00:00
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virtual already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
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LayerManager* aManager,
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const ContainerLayerParameters& aContainerParameters) override;
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2017-07-01 00:23:20 +00:00
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virtual bool CreateWebRenderCommands(mozilla::wr::DisplayListBuilder& aBuilder,
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mozilla::wr::IpcResourceUpdateQueue& aResources,
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2017-05-03 12:48:07 +00:00
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const StackingContextHelper& aSc,
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mozilla::layers::WebRenderLayerManager* aManager,
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nsDisplayListBuilder* aDisplayListBuilder) override;
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2016-11-24 05:11:29 +00:00
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virtual LayerState GetLayerState(nsDisplayListBuilder* aBuilder,
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LayerManager* aManager,
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const ContainerLayerParameters& aParameters) override
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{
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2018-02-21 15:29:49 +00:00
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if (ForceActiveLayers()) {
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2016-11-24 05:11:29 +00:00
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return mozilla::LAYER_ACTIVE;
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}
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return mozilla::LAYER_NONE;
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}
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2010-07-15 21:07:53 +00:00
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virtual void Paint(nsDisplayListBuilder* aBuilder,
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gfxContext* aCtx) override;
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2010-07-15 21:07:53 +00:00
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void SetExtraBackgroundColor(nscolor aColor)
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{
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mColor = aColor;
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}
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2012-12-13 01:15:55 +00:00
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NS_DISPLAY_DECL_NAME("CanvasBackgroundColor", TYPE_CANVAS_BACKGROUND_COLOR)
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2014-06-03 20:21:39 +00:00
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#ifdef MOZ_DUMP_PAINTING
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virtual void WriteDebugInfo(std::stringstream& aStream) override;
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2014-06-03 20:21:39 +00:00
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#endif
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2012-12-13 01:15:55 +00:00
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};
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class nsDisplayCanvasBackgroundImage : public nsDisplayBackgroundImage {
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public:
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2018-02-13 00:43:28 +00:00
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explicit nsDisplayCanvasBackgroundImage(nsDisplayListBuilder* aBuilder, const InitData& aInitData)
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: nsDisplayBackgroundImage(aBuilder, aInitData)
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2015-10-05 21:09:34 +00:00
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{
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}
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2012-12-13 01:15:55 +00:00
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2017-06-09 19:14:53 +00:00
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virtual void Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) override;
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2012-12-13 01:15:55 +00:00
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2017-07-06 12:00:35 +00:00
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// We still need to paint a background color as well as an image for this item,
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2012-12-13 01:15:55 +00:00
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// so we can't support this yet.
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virtual bool SupportsOptimizingToImage() const override { return false; }
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2016-04-22 05:50:11 +00:00
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2016-08-19 23:36:57 +00:00
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bool IsSingleFixedPositionImage(nsDisplayListBuilder* aBuilder,
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2016-04-22 05:50:11 +00:00
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const nsRect& aClipRect,
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gfxRect* aDestRect);
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2017-07-06 12:00:35 +00:00
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2012-12-13 01:15:55 +00:00
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NS_DISPLAY_DECL_NAME("CanvasBackgroundImage", TYPE_CANVAS_BACKGROUND_IMAGE)
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};
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2013-07-18 06:34:58 +00:00
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class nsDisplayCanvasThemedBackground : public nsDisplayThemedBackground {
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public:
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nsDisplayCanvasThemedBackground(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame)
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2016-05-04 18:14:23 +00:00
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: nsDisplayThemedBackground(aBuilder, aFrame,
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aFrame->GetRectRelativeToSelf() + aBuilder->ToReferenceFrame(aFrame))
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{}
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2017-06-09 19:14:53 +00:00
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virtual void Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) override;
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2013-07-18 06:34:58 +00:00
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NS_DISPLAY_DECL_NAME("CanvasThemedBackground", TYPE_CANVAS_THEMED_BACKGROUND)
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};
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2009-10-08 06:18:18 +00:00
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#endif /* nsCanvasFrame_h___ */
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