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lightning-sunbird  0.9+nobinonly
nsGraphicsStateGTK.cpp
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
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00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
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00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
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00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #include "nsGraphicsStateGTK.h"
00039 
00041 nsGraphicsState::nsGraphicsState()
00042 {
00043   mMatrix = nsnull;
00044   mClipRegion = nsnull;
00045   mColor = 0;
00046   mLineStyle = nsLineStyle_kSolid;
00047   mFontMetrics = nsnull;
00048 }
00050 nsGraphicsState::~nsGraphicsState()
00051 {
00052   NS_IF_RELEASE(mFontMetrics);
00053 }
00055 nsGraphicsStatePool::nsGraphicsStatePool()
00056 {
00057        mFreeList = nsnull;
00058 }
00060 
00061 
00062 
00064 //
00065 // Public nsGraphicsStatePool
00066 //
00068 /* static */ nsGraphicsState *
00069 nsGraphicsStatePool::GetNewGS()
00070 {
00071   nsGraphicsStatePool * thePool = PrivateGetPool();
00072 
00073   return thePool->PrivateGetNewGS();
00074 }
00076 /* static */ void
00077 nsGraphicsStatePool::ReleaseGS(nsGraphicsState* aGS)
00078 {
00079   nsGraphicsStatePool * thePool = PrivateGetPool();
00080 
00081   thePool->PrivateReleaseGS(aGS);
00082 }
00084 
00085 
00087 //
00088 // Private nsGraphicsStatePool
00089 //
00091 
00092 
00094 nsGraphicsStatePool *
00095 nsGraphicsStatePool::gsThePool = nsnull;
00096 
00098 nsGraphicsStatePool *
00099 nsGraphicsStatePool::PrivateGetPool()
00100 {
00101   if (nsnull == gsThePool)
00102   {
00103     gsThePool = new nsGraphicsStatePool();
00104   }
00105 
00106   return gsThePool;
00107 }
00108 
00110 
00111 nsGraphicsStatePool::~nsGraphicsStatePool()
00112 {
00113        nsGraphicsState* gs = mFreeList;
00114        while (gs != nsnull) {
00115               nsGraphicsState* next = gs->mNext;
00116               delete gs;
00117               gs = next;
00118        }
00119 }
00121 nsGraphicsState *
00122 nsGraphicsStatePool::PrivateGetNewGS()
00123 {
00124        nsGraphicsState* gs = mFreeList;
00125        if (gs != nsnull) {
00126               mFreeList = gs->mNext;
00127               return gs;
00128        }
00129        return new nsGraphicsState;
00130 }
00132 void
00133 nsGraphicsStatePool::PrivateReleaseGS(nsGraphicsState* aGS)
00134 {
00135   //   aGS->Clear();
00136        aGS->mNext = mFreeList;
00137        mFreeList = aGS;
00138 }
00140