LCOV - code coverage report
Current view: directory - layout/xul/base/src - nsBoxLayoutState.h (source / functions) Found Hit Coverage
Test: app.info Lines: 14 0 0.0 %
Date: 2012-06-02 Functions: 13 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       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
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla Communicator client code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      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
      25                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      26                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : /**
      39                 :  
      40                 :   Author:
      41                 :   Eric D Vaughan
      42                 : 
      43                 : **/
      44                 : 
      45                 : #ifndef nsBoxLayoutState_h___
      46                 : #define nsBoxLayoutState_h___
      47                 : 
      48                 : #include "nsIFrame.h"
      49                 : #include "nsCOMPtr.h"
      50                 : #include "nsPresContext.h"
      51                 : #include "nsIPresShell.h"
      52                 : 
      53                 : class nsRenderingContext;
      54                 : class nsCalculatedBoxInfo;
      55                 : struct nsHTMLReflowMetrics;
      56                 : class nsString;
      57                 : class nsHTMLReflowCommand;
      58                 : 
      59                 : class NS_STACK_CLASS nsBoxLayoutState
      60               0 : {
      61                 : public:
      62                 :   nsBoxLayoutState(nsPresContext* aPresContext,
      63                 :                    nsRenderingContext* aRenderingContext = nsnull,
      64                 :                    // see OuterReflowState() below
      65                 :                    const nsHTMLReflowState* aOuterReflowState = nsnull,
      66                 :                    PRUint16 aReflowDepth = 0) NS_HIDDEN;
      67                 :   nsBoxLayoutState(const nsBoxLayoutState& aState) NS_HIDDEN;
      68                 : 
      69               0 :   nsPresContext* PresContext() const { return mPresContext; }
      70               0 :   nsIPresShell* PresShell() const { return mPresContext->PresShell(); }
      71                 : 
      72               0 :   PRUint32 LayoutFlags() const { return mLayoutFlags; }
      73               0 :   void SetLayoutFlags(PRUint32 aFlags) { mLayoutFlags = aFlags; }
      74                 : 
      75                 :   // if true no one under us will paint during reflow.
      76               0 :   void SetPaintingDisabled(bool aDisable) { mPaintingDisabled = aDisable; }
      77               0 :   bool PaintingDisabled() const { return mPaintingDisabled; }
      78                 : 
      79                 :   // The rendering context may be null for specialized uses of
      80                 :   // nsBoxLayoutState and should be null-checked before it is used.
      81                 :   // However, passing a null rendering context to the constructor when
      82                 :   // doing box layout or intrinsic size calculation will cause bugs.
      83               0 :   nsRenderingContext* GetRenderingContext() const { return mRenderingContext; }
      84                 : 
      85               0 :   void PushStackMemory() { PresShell()->PushStackMemory(); ++mReflowDepth; }
      86               0 :   void PopStackMemory()  { PresShell()->PopStackMemory(); --mReflowDepth; }
      87               0 :   void* AllocateStackMemory(size_t aSize)
      88               0 :   { return PresShell()->AllocateStackMemory(aSize); }
      89                 : 
      90                 :   // The HTML reflow state that lives outside the box-block boundary.
      91                 :   // May not be set reliably yet.
      92               0 :   const nsHTMLReflowState* OuterReflowState() { return mOuterReflowState; }
      93                 : 
      94               0 :   PRUint16 GetReflowDepth() { return mReflowDepth; }
      95                 :   
      96                 : private:
      97                 :   nsRefPtr<nsPresContext> mPresContext;
      98                 :   nsRenderingContext *mRenderingContext;
      99                 :   const nsHTMLReflowState *mOuterReflowState;
     100                 :   PRUint32 mLayoutFlags;
     101                 :   PRUint16 mReflowDepth; 
     102                 :   bool mPaintingDisabled;
     103                 : };
     104                 : 
     105                 : #endif
     106                 : 

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