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1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
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2 /* This Source Code Form is subject to the terms of the Mozilla Public |
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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5 |
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6 // Keep in (case-insensitive) order: |
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7 #include "nsFrame.h" |
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8 #include "nsGkAtoms.h" |
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9 #include "nsStyleContext.h" |
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10 #include "nsSVGEffects.h" |
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11 |
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12 // This is a very simple frame whose only purpose is to capture style change |
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13 // events and propagate them to the parent. Most of the heavy lifting is done |
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14 // within the nsSVGGradientFrame, which is the parent for this frame |
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15 |
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16 typedef nsFrame nsSVGStopFrameBase; |
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17 |
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18 class nsSVGStopFrame : public nsSVGStopFrameBase |
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19 { |
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20 friend nsIFrame* |
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21 NS_NewSVGStopFrame(nsIPresShell* aPresShell, nsStyleContext* aContext); |
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22 protected: |
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23 nsSVGStopFrame(nsStyleContext* aContext) |
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24 : nsSVGStopFrameBase(aContext) |
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25 { |
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26 AddStateBits(NS_FRAME_IS_NONDISPLAY); |
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27 } |
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28 |
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29 public: |
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30 NS_DECL_FRAMEARENA_HELPERS |
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31 |
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32 // nsIFrame interface: |
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33 #ifdef DEBUG |
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34 virtual void Init(nsIContent* aContent, |
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35 nsIFrame* aParent, |
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36 nsIFrame* aPrevInFlow) MOZ_OVERRIDE; |
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37 #endif |
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38 |
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39 void BuildDisplayList(nsDisplayListBuilder* aBuilder, |
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40 const nsRect& aDirtyRect, |
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41 const nsDisplayListSet& aLists) MOZ_OVERRIDE {} |
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42 |
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43 virtual nsresult AttributeChanged(int32_t aNameSpaceID, |
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44 nsIAtom* aAttribute, |
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45 int32_t aModType) MOZ_OVERRIDE; |
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46 |
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47 /** |
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48 * Get the "type" of the frame |
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49 * |
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50 * @see nsGkAtoms::svgStopFrame |
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51 */ |
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52 virtual nsIAtom* GetType() const MOZ_OVERRIDE; |
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53 |
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54 virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE |
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55 { |
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56 return nsSVGStopFrameBase::IsFrameOfType(aFlags & ~(nsIFrame::eSVG)); |
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57 } |
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58 |
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59 #ifdef DEBUG_FRAME_DUMP |
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60 virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE |
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61 { |
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62 return MakeFrameName(NS_LITERAL_STRING("SVGStop"), aResult); |
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63 } |
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64 #endif |
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65 }; |
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66 |
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67 //---------------------------------------------------------------------- |
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68 // Implementation |
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69 |
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70 NS_IMPL_FRAMEARENA_HELPERS(nsSVGStopFrame) |
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71 |
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72 //---------------------------------------------------------------------- |
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73 // nsIFrame methods: |
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74 |
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75 #ifdef DEBUG |
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76 void |
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77 nsSVGStopFrame::Init(nsIContent* aContent, |
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78 nsIFrame* aParent, |
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79 nsIFrame* aPrevInFlow) |
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80 { |
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81 NS_ASSERTION(aContent->IsSVG(nsGkAtoms::stop), "Content is not a stop element"); |
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82 |
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83 nsSVGStopFrameBase::Init(aContent, aParent, aPrevInFlow); |
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84 } |
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85 #endif /* DEBUG */ |
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86 |
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87 nsIAtom * |
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88 nsSVGStopFrame::GetType() const |
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89 { |
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90 return nsGkAtoms::svgStopFrame; |
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91 } |
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92 |
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93 nsresult |
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94 nsSVGStopFrame::AttributeChanged(int32_t aNameSpaceID, |
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95 nsIAtom* aAttribute, |
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96 int32_t aModType) |
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97 { |
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98 if (aNameSpaceID == kNameSpaceID_None && |
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99 aAttribute == nsGkAtoms::offset) { |
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100 nsSVGEffects::InvalidateRenderingObservers(this); |
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101 } |
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102 |
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103 return nsSVGStopFrameBase::AttributeChanged(aNameSpaceID, |
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104 aAttribute, aModType); |
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105 } |
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106 |
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107 // ------------------------------------------------------------------------- |
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108 // Public functions |
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109 // ------------------------------------------------------------------------- |
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110 |
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111 nsIFrame* NS_NewSVGStopFrame(nsIPresShell* aPresShell, |
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112 nsStyleContext* aContext) |
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113 { |
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114 return new (aPresShell) nsSVGStopFrame(aContext); |
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115 } |