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3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
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11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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15 : * The Original Code is mozilla.org code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Vladimir Vukicevic <vladimir@pobox.com>
19 : * Portions created by the Initial Developer are Copyright (C) 2005
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : *
24 : * Alternatively, the contents of this file may be used under the terms of
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35 : *
36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : /* rendering object for the HTML <canvas> element */
39 :
40 : #ifndef nsHTMLCanvasFrame_h___
41 : #define nsHTMLCanvasFrame_h___
42 :
43 : #include "nsContainerFrame.h"
44 : #include "nsString.h"
45 : #include "nsAString.h"
46 : #include "nsIIOService.h"
47 : #include "Layers.h"
48 : #include "ImageLayers.h"
49 :
50 : class nsPresContext;
51 : class nsDisplayItem;
52 :
53 : nsIFrame* NS_NewHTMLCanvasFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
54 :
55 : class nsHTMLCanvasFrame : public nsContainerFrame
56 : {
57 : public:
58 : typedef mozilla::layers::Layer Layer;
59 : typedef mozilla::layers::LayerManager LayerManager;
60 :
61 : NS_DECL_FRAMEARENA_HELPERS
62 :
63 0 : nsHTMLCanvasFrame(nsStyleContext* aContext) : nsContainerFrame(aContext) {}
64 :
65 : NS_IMETHOD Init(nsIContent* aContent,
66 : nsIFrame* aParent,
67 : nsIFrame* aPrevInFlow);
68 :
69 : NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
70 : const nsRect& aDirtyRect,
71 : const nsDisplayListSet& aLists);
72 :
73 : already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
74 : LayerManager* aManager,
75 : nsDisplayItem* aItem);
76 :
77 : /* get the size of the canvas's image */
78 : nsIntSize GetCanvasSize();
79 :
80 : virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext);
81 : virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext);
82 : virtual nsSize GetIntrinsicRatio();
83 :
84 : virtual nsSize ComputeSize(nsRenderingContext *aRenderingContext,
85 : nsSize aCBSize, nscoord aAvailableWidth,
86 : nsSize aMargin, nsSize aBorder, nsSize aPadding,
87 : bool aShrinkWrap);
88 :
89 : NS_IMETHOD Reflow(nsPresContext* aPresContext,
90 : nsHTMLReflowMetrics& aDesiredSize,
91 : const nsHTMLReflowState& aReflowState,
92 : nsReflowStatus& aStatus);
93 :
94 : nsRect GetInnerArea() const;
95 :
96 : #ifdef ACCESSIBILITY
97 : virtual already_AddRefed<nsAccessible> CreateAccessible();
98 : #endif
99 :
100 : virtual nsIAtom* GetType() const;
101 :
102 0 : virtual bool IsFrameOfType(PRUint32 aFlags) const
103 : {
104 0 : return nsSplittableFrame::IsFrameOfType(aFlags & ~(nsIFrame::eReplaced));
105 : }
106 :
107 : #ifdef DEBUG
108 : NS_IMETHOD GetFrameName(nsAString& aResult) const;
109 : #endif
110 :
111 : // Inserted child content gets its frames parented by our child block
112 0 : virtual nsIFrame* GetContentInsertionFrame() {
113 0 : return GetFirstPrincipalChild()->GetContentInsertionFrame();
114 : }
115 :
116 : protected:
117 : virtual ~nsHTMLCanvasFrame();
118 :
119 : nscoord GetContinuationOffset(nscoord* aWidth = 0) const;
120 :
121 : nsMargin mBorderPadding;
122 : };
123 :
124 : #endif /* nsHTMLCanvasFrame_h___ */
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