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comparison: layout/generic/nsBulletFrame.h
layout/generic/nsBulletFrame.h
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 /* rendering object for list-item bullets */ | |
| 7 | |
| 8 #ifndef nsBulletFrame_h___ | |
| 9 #define nsBulletFrame_h___ | |
| 10 | |
| 11 #include "mozilla/Attributes.h" | |
| 12 #include "nsFrame.h" | |
| 13 | |
| 14 #include "imgINotificationObserver.h" | |
| 15 | |
| 16 class imgIContainer; | |
| 17 class imgRequestProxy; | |
| 18 | |
| 19 class nsBulletFrame; | |
| 20 | |
| 21 class nsBulletListener : public imgINotificationObserver | |
| 22 { | |
| 23 public: | |
| 24 nsBulletListener(); | |
| 25 virtual ~nsBulletListener(); | |
| 26 | |
| 27 NS_DECL_ISUPPORTS | |
| 28 NS_DECL_IMGINOTIFICATIONOBSERVER | |
| 29 | |
| 30 void SetFrame(nsBulletFrame *frame) { mFrame = frame; } | |
| 31 | |
| 32 private: | |
| 33 nsBulletFrame *mFrame; | |
| 34 }; | |
| 35 | |
| 36 /** | |
| 37 * A simple class that manages the layout and rendering of html bullets. | |
| 38 * This class also supports the CSS list-style properties. | |
| 39 */ | |
| 40 class nsBulletFrame : public nsFrame { | |
| 41 public: | |
| 42 NS_DECL_FRAMEARENA_HELPERS | |
| 43 #ifdef DEBUG | |
| 44 NS_DECL_QUERYFRAME_TARGET(nsBulletFrame) | |
| 45 NS_DECL_QUERYFRAME | |
| 46 #endif | |
| 47 | |
| 48 nsBulletFrame(nsStyleContext* aContext) | |
| 49 : nsFrame(aContext) | |
| 50 { | |
| 51 } | |
| 52 virtual ~nsBulletFrame(); | |
| 53 | |
| 54 NS_IMETHOD Notify(imgIRequest *aRequest, int32_t aType, const nsIntRect* aData); | |
| 55 | |
| 56 // nsIFrame | |
| 57 virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE; | |
| 58 virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, | |
| 59 const nsRect& aDirtyRect, | |
| 60 const nsDisplayListSet& aLists) MOZ_OVERRIDE; | |
| 61 virtual nsIAtom* GetType() const MOZ_OVERRIDE; | |
| 62 virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) MOZ_OVERRIDE; | |
| 63 #ifdef DEBUG_FRAME_DUMP | |
| 64 virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE; | |
| 65 #endif | |
| 66 | |
| 67 // nsIHTMLReflow | |
| 68 virtual nsresult Reflow(nsPresContext* aPresContext, | |
| 69 nsHTMLReflowMetrics& aMetrics, | |
| 70 const nsHTMLReflowState& aReflowState, | |
| 71 nsReflowStatus& aStatus) MOZ_OVERRIDE; | |
| 72 virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE; | |
| 73 virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE; | |
| 74 | |
| 75 // nsBulletFrame | |
| 76 int32_t SetListItemOrdinal(int32_t aNextOrdinal, bool* aChanged, | |
| 77 int32_t aIncrement); | |
| 78 | |
| 79 | |
| 80 /* get list item text, without '.' */ | |
| 81 static void AppendCounterText(int32_t aListStyleType, | |
| 82 int32_t aOrdinal, | |
| 83 nsString& aResult, | |
| 84 bool& aIsRTL); | |
| 85 | |
| 86 /* get suffix of list item */ | |
| 87 static void GetListItemSuffix(int32_t aListStyleType, | |
| 88 nsString& aResult, | |
| 89 bool& aSuppressPadding); | |
| 90 | |
| 91 /* get list item text, with '.' */ | |
| 92 void GetListItemText(const nsStyleList& aStyleList, nsString& aResult); | |
| 93 | |
| 94 void PaintBullet(nsRenderingContext& aRenderingContext, nsPoint aPt, | |
| 95 const nsRect& aDirtyRect, uint32_t aFlags); | |
| 96 | |
| 97 virtual bool IsEmpty() MOZ_OVERRIDE; | |
| 98 virtual bool IsSelfEmpty() MOZ_OVERRIDE; | |
| 99 virtual nscoord GetBaseline() const MOZ_OVERRIDE; | |
| 100 | |
| 101 float GetFontSizeInflation() const; | |
| 102 bool HasFontSizeInflation() const { | |
| 103 return (GetStateBits() & BULLET_FRAME_HAS_FONT_INFLATION) != 0; | |
| 104 } | |
| 105 void SetFontSizeInflation(float aInflation); | |
| 106 | |
| 107 int32_t GetOrdinal() { return mOrdinal; } | |
| 108 | |
| 109 already_AddRefed<imgIContainer> GetImage() const; | |
| 110 | |
| 111 protected: | |
| 112 nsresult OnStartContainer(imgIRequest *aRequest, imgIContainer *aImage); | |
| 113 | |
| 114 void GetDesiredSize(nsPresContext* aPresContext, | |
| 115 nsRenderingContext *aRenderingContext, | |
| 116 nsHTMLReflowMetrics& aMetrics, | |
| 117 float aFontSizeInflation); | |
| 118 | |
| 119 void GetLoadGroup(nsPresContext *aPresContext, nsILoadGroup **aLoadGroup); | |
| 120 | |
| 121 nsMargin mPadding; | |
| 122 nsRefPtr<imgRequestProxy> mImageRequest; | |
| 123 nsRefPtr<nsBulletListener> mListener; | |
| 124 | |
| 125 nsSize mIntrinsicSize; | |
| 126 int32_t mOrdinal; | |
| 127 bool mTextIsRTL; | |
| 128 | |
| 129 // If set to true, any padding of bullet defined in the UA style sheet will | |
| 130 // be suppressed. This is used for some CJK numbering styles where extra | |
| 131 // space after the suffix is not desired. Note that, any author-specified | |
| 132 // padding overriding the default style will NOT be suppressed. | |
| 133 bool mSuppressPadding; | |
| 134 | |
| 135 private: | |
| 136 | |
| 137 // This is a boolean flag indicating whether or not the current image request | |
| 138 // has been registered with the refresh driver. | |
| 139 bool mRequestRegistered; | |
| 140 }; | |
| 141 | |
| 142 #endif /* nsBulletFrame_h___ */ |
