The Tor Browser: layout/generic/nsBulletFrame.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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/. */

     6 /* rendering object for list-item bullets */

     8 #ifndef nsBulletFrame_h___

     9 #define nsBulletFrame_h___

    11 #include "mozilla/Attributes.h"

    12 #include "nsFrame.h"

    14 #include "imgINotificationObserver.h"

    16 class imgIContainer;

    17 class imgRequestProxy;

    19 class nsBulletFrame;

    21 class nsBulletListener : public imgINotificationObserver

    22 {

    23 public:

    24   nsBulletListener();

    25   virtual ~nsBulletListener();

    27   NS_DECL_ISUPPORTS

    28   NS_DECL_IMGINOTIFICATIONOBSERVER

    30   void SetFrame(nsBulletFrame *frame) { mFrame = frame; }

    32 private:

    33   nsBulletFrame *mFrame;

    34 };

    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

    48   nsBulletFrame(nsStyleContext* aContext)

    49     : nsFrame(aContext)

    50   {

    51   }

    52   virtual ~nsBulletFrame();

    54   NS_IMETHOD Notify(imgIRequest *aRequest, int32_t aType, const nsIntRect* aData);

    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

    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;

    75   // nsBulletFrame

    76   int32_t SetListItemOrdinal(int32_t aNextOrdinal, bool* aChanged,

    77                              int32_t aIncrement);

    80   /* get list item text, without '.' */

    81   static void AppendCounterText(int32_t aListStyleType,

    82                                 int32_t aOrdinal,

    83                                 nsString& aResult,

    84                                 bool& aIsRTL);

    86   /* get suffix of list item */

    87   static void GetListItemSuffix(int32_t aListStyleType,

    88                                 nsString& aResult,

    89                                 bool& aSuppressPadding);

    91   /* get list item text, with '.' */

    92   void GetListItemText(const nsStyleList& aStyleList, nsString& aResult);

    94   void PaintBullet(nsRenderingContext& aRenderingContext, nsPoint aPt,

    95                    const nsRect& aDirtyRect, uint32_t aFlags);

    97   virtual bool IsEmpty() MOZ_OVERRIDE;

    98   virtual bool IsSelfEmpty() MOZ_OVERRIDE;

    99   virtual nscoord GetBaseline() const MOZ_OVERRIDE;

   101   float GetFontSizeInflation() const;

   102   bool HasFontSizeInflation() const {

   103     return (GetStateBits() & BULLET_FRAME_HAS_FONT_INFLATION) != 0;

   104   }

   105   void SetFontSizeInflation(float aInflation);

   107   int32_t GetOrdinal() { return mOrdinal; }

   109   already_AddRefed<imgIContainer> GetImage() const;

   111 protected:

   112   nsresult OnStartContainer(imgIRequest *aRequest, imgIContainer *aImage);

   114   void GetDesiredSize(nsPresContext* aPresContext,

   115                       nsRenderingContext *aRenderingContext,

   116                       nsHTMLReflowMetrics& aMetrics,

   117                       float aFontSizeInflation);

   119   void GetLoadGroup(nsPresContext *aPresContext, nsILoadGroup **aLoadGroup);

   121   nsMargin mPadding;

   122   nsRefPtr<imgRequestProxy> mImageRequest;

   123   nsRefPtr<nsBulletListener> mListener;

   125   nsSize mIntrinsicSize;

   126   int32_t mOrdinal;

   127   bool mTextIsRTL;

   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;

   135 private:

   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 };

   142 #endif /* nsBulletFrame_h___ */

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