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ftang%netscape.com
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Коммит
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@ -0,0 +1,596 @@
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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||||
* Version 1.0 (the "NPL"); you may not use this file except in
|
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
|
||||
*
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||||
* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
|
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1999 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsUnicodeRenderingToolkit.h"
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#include "nsUnicodeFontMappingMac.h"
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#include "nsUnicodeFallbackCache.h"
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#include "nsDrawingSurfaceMac.h"
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#include "nsTransform2D.h"
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#define BAD_FONT_NUM -1
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#define BAD_SCRIPT 0x7F
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#define STACK_TREASHOLD 1000
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#define BAD_TEXT_ENCODING 0xFFFFFFFF
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//------------------------------------------------------------------------
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static UnicodeToTextInfo gConverters[32] = {
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nsnull, nsnull, nsnull, nsnull, nsnull, nsnull, nsnull, nsnull,
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nsnull, nsnull, nsnull, nsnull, nsnull, nsnull, nsnull, nsnull
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};
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//------------------------------------------------------------------------
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UnicodeToTextInfo nsUnicodeRenderingToolkit :: GetConverterByScript(ScriptCode sc)
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{
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NS_PRECONDITION(sc < 32, "illegal script id");
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if(sc >= 32)
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return nsnull;
|
||||
if(gConverters[sc] != nsnull) {
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return gConverters[sc];
|
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}
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OSStatus err = noErr;
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|
||||
//
|
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TextEncoding scriptEncoding;
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err = ::UpgradeScriptInfoToTextEncoding(sc, kTextLanguageDontCare, kTextRegionDontCare, nsnull, &scriptEncoding);
|
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if( noErr == err )
|
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err = ::CreateUnicodeToTextInfoByEncoding(scriptEncoding, &gConverters[sc] );
|
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|
||||
if(noErr != err)
|
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gConverters[sc] = nsnull;
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return gConverters[sc];
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}
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//------------------------------------------------------------------------
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#pragma mark -
|
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//------------------------------------------------------------------------
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||||
|
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nsUnicodeFallbackCache* nsUnicodeRenderingToolkit :: GetTECFallbackCache()
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||||
{
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||||
static nsUnicodeFallbackCache* gTECFallbackCache = nsnull;
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|
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if( ! gTECFallbackCache)
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gTECFallbackCache = new nsUnicodeFallbackCache();
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return gTECFallbackCache;
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}
|
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//------------------------------------------------------------------------
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PRBool nsUnicodeRenderingToolkit :: TECFallbackGetWidth(
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const PRUnichar *aCharPt,
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short& oWidth,
|
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short origFontNum,
|
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const short* scriptFallbackFonts)
|
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{
|
||||
OSStatus err = noErr;
|
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char buf[20];
|
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ByteCount processBytes = 0;
|
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ByteCount outLen = 0;
|
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ScriptCode fallbackScript;
|
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nsUnicodeFallbackCache* cache = GetTECFallbackCache();
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|
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if( cache->Get(*aCharPt, fallbackScript))
|
||||
{
|
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if(BAD_SCRIPT == fallbackScript)
|
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return PR_FALSE;
|
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|
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UnicodeToTextInfo fallbackConverter = GetConverterByScript(fallbackScript);
|
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if( fallbackConverter ) {
|
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err = ::ConvertFromUnicodeToText(fallbackConverter, (ByteCount)(2), (ConstUniCharArrayPtr) aCharPt,
|
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kUnicodeLooseMappingsMask , 0, NULL, 0, NULL,
|
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STACK_TREASHOLD, &processBytes, &outLen,
|
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(LogicalAddress)buf);
|
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if( outLen > 0) {
|
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::TextFont(scriptFallbackFonts[fallbackScript]);
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GetScriptTextWidth(buf, outLen, oWidth);
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::TextFont(origFontNum);
|
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}
|
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}
|
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return PR_TRUE;
|
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}
|
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|
||||
for( fallbackScript = 0 ; fallbackScript < 32; fallbackScript++)
|
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{
|
||||
if(BAD_FONT_NUM != scriptFallbackFonts[fallbackScript])
|
||||
{
|
||||
UnicodeToTextInfo fallbackConverter = GetConverterByScript(fallbackScript);
|
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if( fallbackConverter ) {
|
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err = ::ConvertFromUnicodeToText(fallbackConverter, (ByteCount)(2), (ConstUniCharArrayPtr) aCharPt,
|
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kUnicodeLooseMappingsMask , 0, NULL, 0, NULL,
|
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STACK_TREASHOLD, &processBytes, &outLen,
|
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(LogicalAddress)buf);
|
||||
if(outLen > 0)
|
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{
|
||||
NS_PRECONDITION(0 == (processBytes % 2), "strange conversion result");
|
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::TextFont(scriptFallbackFonts[fallbackScript]);
|
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GetScriptTextWidth(buf, outLen, oWidth);
|
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::TextFont(origFontNum);
|
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break;
|
||||
}
|
||||
}
|
||||
}
|
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}
|
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|
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if( 0 == outLen )
|
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fallbackScript = BAD_SCRIPT;
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|
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// put into cache
|
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cache->Set(*aCharPt, fallbackScript);
|
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|
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return (BAD_SCRIPT != fallbackScript);
|
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}
|
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//------------------------------------------------------------------------
|
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PRBool nsUnicodeRenderingToolkit :: TECFallbackDrawChar(
|
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const PRUnichar *aCharPt,
|
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PRInt32 x,
|
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PRInt32 y,
|
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short& oWidth,
|
||||
short origFontNum,
|
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const short* scriptFallbackFonts)
|
||||
{
|
||||
OSStatus err = noErr;
|
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char buf[20];
|
||||
ByteCount processBytes = 0;
|
||||
ByteCount outLen = 0;
|
||||
ScriptCode fallbackScript;
|
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nsUnicodeFallbackCache* cache = GetTECFallbackCache();
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|
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// since we always call TECFallbackGetWidth before TECFallbackDrawChar
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// we could assume that we can always get the script code from cache.
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if( cache->Get(*aCharPt, fallbackScript))
|
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{
|
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if(BAD_SCRIPT == fallbackScript)
|
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return PR_FALSE;
|
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|
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UnicodeToTextInfo fallbackConverter = GetConverterByScript(fallbackScript);
|
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if( fallbackConverter ) {
|
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err = ::ConvertFromUnicodeToText(fallbackConverter, (ByteCount)(2), (ConstUniCharArrayPtr) aCharPt,
|
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kUnicodeLooseMappingsMask , 0, NULL, 0, NULL,
|
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STACK_TREASHOLD, &processBytes, &outLen,
|
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(LogicalAddress)buf);
|
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if( outLen > 0) {
|
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::TextFont(scriptFallbackFonts[fallbackScript]);
|
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DrawScriptText(buf, outLen, x, y, oWidth);
|
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::TextFont(origFontNum);
|
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}
|
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}
|
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return PR_TRUE;
|
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}
|
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return PR_FALSE;
|
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}
|
||||
//------------------------------------------------------------------------
|
||||
|
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PRBool nsUnicodeRenderingToolkit :: ATSUIFallbackGetWidth(
|
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const PRUnichar *aCharPt,
|
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short& oWidth,
|
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short origFontNum,
|
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short aSize, PRBool aBold, PRBool aItalic, nscolor aColor)
|
||||
{
|
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if( 0xFFFD == *aCharPt)
|
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return PR_FALSE;
|
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if (nsATSUIUtils::IsAvailable())
|
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{
|
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mATSUIToolkit.PrepareToDraw(mPort, mContext );
|
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nsresult res = mATSUIToolkit.GetWidth(aCharPt, oWidth, aSize,
|
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origFontNum,
|
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aBold, aItalic, aColor);
|
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if(NS_SUCCEEDED(res))
|
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return PR_TRUE;
|
||||
}
|
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return PR_FALSE;
|
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}
|
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//------------------------------------------------------------------------
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||||
|
||||
PRBool nsUnicodeRenderingToolkit :: ATSUIFallbackDrawChar(
|
||||
const PRUnichar *aCharPt,
|
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PRInt32 x, PRInt32 y,
|
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short& oWidth,
|
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short origFontNum,
|
||||
short aSize, PRBool aBold, PRBool aItalic, nscolor aColor)
|
||||
{
|
||||
if( 0xFFFD == *aCharPt)
|
||||
return PR_FALSE;
|
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if (nsATSUIUtils::IsAvailable())
|
||||
{
|
||||
mATSUIToolkit.PrepareToDraw(mPort, mContext );
|
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nsresult res = mATSUIToolkit.DrawString(aCharPt, x, y, oWidth, aSize,
|
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origFontNum,
|
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aBold, aItalic, aColor);
|
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if(NS_SUCCEEDED(res))
|
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return PR_TRUE;
|
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}
|
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return PR_FALSE;
|
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}
|
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static char *question = "<?>";
|
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//------------------------------------------------------------------------
|
||||
|
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PRBool nsUnicodeRenderingToolkit :: QuestionMarkFallbackGetWidth(
|
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const PRUnichar *aCharPt,
|
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short& oWidth)
|
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{
|
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GetScriptTextWidth(question, 3,oWidth);
|
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return PR_TRUE;
|
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}
|
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//------------------------------------------------------------------------
|
||||
|
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PRBool nsUnicodeRenderingToolkit :: QuestionMarkFallbackDrawChar(
|
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const PRUnichar *aCharPt,
|
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PRInt32 x,
|
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PRInt32 y,
|
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short& oWidth)
|
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{
|
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DrawScriptText(question, 3, x, y, oWidth);
|
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return PR_TRUE;
|
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}
|
||||
|
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//------------------------------------------------------------------------
|
||||
void nsUnicodeRenderingToolkit :: GetScriptTextWidth(
|
||||
const char* buf,
|
||||
ByteCount aLen,
|
||||
short& oWidth)
|
||||
{
|
||||
oWidth = ::TextWidth(buf, 0, aLen);
|
||||
}
|
||||
//------------------------------------------------------------------------
|
||||
void nsUnicodeRenderingToolkit :: DrawScriptText(
|
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const char* buf,
|
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ByteCount aLen,
|
||||
PRInt32 x,
|
||||
PRInt32 y,
|
||||
short& oWidth)
|
||||
{
|
||||
oWidth = ::TextWidth(buf, 0, aLen);
|
||||
::MoveTo(x, y);
|
||||
::DrawText(buf,0,aLen);
|
||||
}
|
||||
//------------------------------------------------------------------------
|
||||
|
||||
nsresult nsUnicodeRenderingToolkit :: GetTextSegmentWidth(
|
||||
const PRUnichar *aString, PRUint32 aLength,
|
||||
short fontNum, const short *scriptFallbackFonts,
|
||||
PRUint32& oWidth)
|
||||
{
|
||||
if(aLength == 0) {
|
||||
oWidth = 0;
|
||||
return NS_OK;
|
||||
}
|
||||
NS_PRECONDITION(BAD_FONT_NUM != fontNum, "illegal font num");
|
||||
short textWidth = 0;
|
||||
PRUint32 processLen = 0;
|
||||
char *heapBuf = nsnull;
|
||||
PRUint32 heapBufSize = 0;
|
||||
short thisWidth = 0;
|
||||
char stackBuf[STACK_TREASHOLD];
|
||||
char *buf ;
|
||||
ByteCount processBytes;
|
||||
ByteCount outLen;
|
||||
OSStatus err = noErr;
|
||||
|
||||
::TextFont(fontNum);
|
||||
ScriptCode script = ::FontToScript(fontNum);
|
||||
UnicodeToTextInfo converter = GetConverterByScript(script);
|
||||
|
||||
// find buf from stack or heap. We only need to do this once in this function.
|
||||
// put this out of the loop for performance...
|
||||
ByteCount bufLen = aLength * 2 + 10;
|
||||
if( bufLen > STACK_TREASHOLD)
|
||||
{
|
||||
if(bufLen > heapBufSize )
|
||||
{
|
||||
if(heapBuf)
|
||||
delete[] heapBuf;
|
||||
heapBuf = new char [bufLen];
|
||||
heapBufSize = bufLen;
|
||||
if(nsnull == heapBuf) {
|
||||
return NS_ERROR_OUT_OF_MEMORY;
|
||||
}
|
||||
}
|
||||
buf = heapBuf;
|
||||
} else {
|
||||
bufLen = STACK_TREASHOLD;
|
||||
buf = stackBuf;
|
||||
}
|
||||
|
||||
do {
|
||||
if(converter)
|
||||
{
|
||||
outLen = 0;
|
||||
err = noErr;
|
||||
processBytes = 0;
|
||||
err = ::ConvertFromUnicodeToText(converter, (ByteCount)(2*(aLength - processLen)), (ConstUniCharArrayPtr) aString,
|
||||
0 , 0, NULL, 0, NULL,
|
||||
bufLen, &processBytes, &outLen,
|
||||
(LogicalAddress)buf);
|
||||
|
||||
// no mater if failed or not, as long as it convert some text, we process it.
|
||||
if(outLen > 0)
|
||||
{
|
||||
GetScriptTextWidth(buf, outLen, thisWidth);
|
||||
|
||||
textWidth += thisWidth;
|
||||
|
||||
NS_PRECONDITION(0 == (processBytes % 2), "strange conversion result");
|
||||
|
||||
PRInt32 processUnicode = processBytes / 2;
|
||||
processLen += processUnicode;
|
||||
aString += processUnicode;
|
||||
}
|
||||
|
||||
}
|
||||
// Cannot precess by TEC, process one char a time by fallback mechanism
|
||||
if( processLen < aLength)
|
||||
{
|
||||
PRBool fallbackDone = PR_FALSE;
|
||||
// Fallback by try different Script code
|
||||
fallbackDone = TECFallbackGetWidth(aString, thisWidth, fontNum, scriptFallbackFonts);
|
||||
|
||||
// Fallback by using ATSUI
|
||||
if(! fallbackDone) {
|
||||
nsFont *font;
|
||||
mGS->mFontMetrics->GetFont(font);
|
||||
fallbackDone = ATSUIFallbackGetWidth(aString, thisWidth, fontNum,
|
||||
font->size,
|
||||
(font->weight > NS_FONT_WEIGHT_NORMAL),
|
||||
((NS_FONT_STYLE_ITALIC == font->style) || (NS_FONT_STYLE_OBLIQUE == font->style)),
|
||||
mGS->mColor );
|
||||
}
|
||||
// Fallback to question mark
|
||||
if(! fallbackDone)
|
||||
QuestionMarkFallbackGetWidth(aString, thisWidth);
|
||||
|
||||
textWidth += thisWidth;
|
||||
|
||||
// for fallback measure/drawing, we always do one char a time.
|
||||
aString++;
|
||||
processLen++;
|
||||
}
|
||||
} while (processLen < aLength);
|
||||
|
||||
// release buffer if it is from heap
|
||||
if(heapBuf)
|
||||
delete[] heapBuf;
|
||||
|
||||
oWidth = textWidth;
|
||||
return NS_OK;
|
||||
}
|
||||
//------------------------------------------------------------------------
|
||||
|
||||
nsresult nsUnicodeRenderingToolkit :: DrawTextSegment(
|
||||
const PRUnichar *aString, PRUint32 aLength,
|
||||
short fontNum, const short *scriptFallbackFonts,
|
||||
PRInt32 x, PRInt32 y, PRUint32& oWidth)
|
||||
{
|
||||
if(aLength == 0) {
|
||||
oWidth = 0;
|
||||
return NS_OK;
|
||||
}
|
||||
NS_PRECONDITION(BAD_FONT_NUM != fontNum, "illegal font num");
|
||||
short textWidth = 0;
|
||||
PRUint32 processLen = 0;
|
||||
char *heapBuf = nsnull;
|
||||
PRUint32 heapBufSize = 0;
|
||||
short thisWidth = 0;
|
||||
char stackBuf[STACK_TREASHOLD];
|
||||
char *buf ;
|
||||
ByteCount processBytes;
|
||||
ByteCount outLen;
|
||||
OSStatus err = noErr;
|
||||
|
||||
::TextFont(fontNum);
|
||||
ScriptCode script = ::FontToScript(fontNum);
|
||||
UnicodeToTextInfo converter = GetConverterByScript(script);
|
||||
|
||||
// find buf from stack or heap. We only need to do this once in this function.
|
||||
// put this out of the loop for performance...
|
||||
ByteCount bufLen = aLength * 2 + 10;
|
||||
if( bufLen > STACK_TREASHOLD)
|
||||
{
|
||||
if(bufLen > heapBufSize )
|
||||
{
|
||||
if(heapBuf)
|
||||
delete[] heapBuf;
|
||||
heapBuf = new char [bufLen];
|
||||
heapBufSize = bufLen;
|
||||
if(nsnull == heapBuf) {
|
||||
return NS_ERROR_OUT_OF_MEMORY;
|
||||
}
|
||||
}
|
||||
buf = heapBuf;
|
||||
} else {
|
||||
bufLen = STACK_TREASHOLD;
|
||||
buf = stackBuf;
|
||||
}
|
||||
|
||||
do {
|
||||
if(converter)
|
||||
{
|
||||
outLen = 0;
|
||||
err = noErr;
|
||||
processBytes = 0;
|
||||
err = ::ConvertFromUnicodeToText(converter, (ByteCount)(2*(aLength - processLen)), (ConstUniCharArrayPtr) aString,
|
||||
0 , 0, NULL, 0, NULL,
|
||||
bufLen, &processBytes, &outLen,
|
||||
(LogicalAddress)buf);
|
||||
|
||||
// no mater if failed or not, as long as it convert some text, we process it.
|
||||
if(outLen > 0)
|
||||
{
|
||||
DrawScriptText(buf, outLen, x, y, thisWidth);
|
||||
|
||||
textWidth += thisWidth;
|
||||
x += thisWidth;
|
||||
|
||||
NS_PRECONDITION(0 == (processBytes % 2), "strange conversion result");
|
||||
|
||||
PRInt32 processUnicode = processBytes / 2;
|
||||
processLen += processUnicode;
|
||||
aString += processUnicode;
|
||||
}
|
||||
|
||||
}
|
||||
// Cannot precess by TEC, process one char a time by fallback mechanism
|
||||
if( processLen < aLength)
|
||||
{
|
||||
PRBool fallbackDone = PR_FALSE;
|
||||
// Fallback by try different Script code
|
||||
fallbackDone = TECFallbackDrawChar(aString, x, y, thisWidth, fontNum, scriptFallbackFonts);
|
||||
|
||||
// Fallback by using ATSUI
|
||||
if(! fallbackDone) {
|
||||
nsFont *font;
|
||||
mGS->mFontMetrics->GetFont(font);
|
||||
fallbackDone = ATSUIFallbackDrawChar(aString, x, y, thisWidth, fontNum,
|
||||
font->size,
|
||||
(font->weight > NS_FONT_WEIGHT_NORMAL),
|
||||
((NS_FONT_STYLE_ITALIC == font->style) || (NS_FONT_STYLE_OBLIQUE == font->style)),
|
||||
mGS->mColor );
|
||||
}
|
||||
// Fallback to question mark
|
||||
if(! fallbackDone)
|
||||
QuestionMarkFallbackDrawChar(aString, x, y, thisWidth);
|
||||
|
||||
textWidth += thisWidth;
|
||||
x += thisWidth;
|
||||
|
||||
// for fallback measure/drawing, we always do one char a time.
|
||||
aString++;
|
||||
processLen++;
|
||||
}
|
||||
} while (processLen < aLength);
|
||||
|
||||
// release buffer if it is from heap
|
||||
if(heapBuf)
|
||||
delete[] heapBuf;
|
||||
|
||||
oWidth = textWidth;
|
||||
return NS_OK;
|
||||
}
|
||||
//------------------------------------------------------------------------
|
||||
|
||||
NS_IMETHODIMP nsUnicodeRenderingToolkit :: GetWidth(const PRUnichar *aString, PRUint32 aLength, nscoord &aWidth, PRInt32 *aFontID)
|
||||
{
|
||||
nsresult res = NS_OK;
|
||||
nsFontMetricsMac *metrics = (nsFontMetricsMac*) mGS->mFontMetrics;
|
||||
nsUnicodeFontMappingMac* fontmap = metrics->GetUnicodeFontMapping();
|
||||
|
||||
PRUint32 i;
|
||||
short fontNum[2];
|
||||
fontNum[0] = fontNum[1] = BAD_FONT_NUM;
|
||||
PRUint32 start;
|
||||
|
||||
PRUint32 textWidth = 0;
|
||||
PRUint32 thisWidth = 0;
|
||||
const short *scriptFallbackFonts = fontmap->GetScriptFallbackFonts();
|
||||
for(i =0, start = 0; i < aLength; i++)
|
||||
{
|
||||
fontNum[ i % 2] = fontmap->GetFontID(aString[i]);
|
||||
if((fontNum[0] != fontNum[1]) && (0 != i))
|
||||
{ // start new font run...
|
||||
PRUint32 thisWidth = 0;
|
||||
res = GetTextSegmentWidth(aString+start, i-start, fontNum[ (i+1) % 2], scriptFallbackFonts, thisWidth);
|
||||
if(NS_FAILED (res))
|
||||
return res;
|
||||
textWidth += thisWidth;
|
||||
start = i;
|
||||
}
|
||||
}
|
||||
res = GetTextSegmentWidth(aString+start, aLength-start, fontNum[ (i+1) % 2], scriptFallbackFonts, thisWidth);
|
||||
if(NS_FAILED (res))
|
||||
return res;
|
||||
textWidth += thisWidth;
|
||||
|
||||
aWidth = NSToCoordRound(float(textWidth) * mP2T);
|
||||
return res;
|
||||
}
|
||||
|
||||
//------------------------------------------------------------------------
|
||||
NS_IMETHODIMP nsUnicodeRenderingToolkit :: DrawString(const PRUnichar *aString, PRUint32 aLength,
|
||||
nscoord aX, nscoord aY, PRInt32 aFontID,
|
||||
const nscoord* aSpacing)
|
||||
{
|
||||
nsresult res = NS_OK;
|
||||
nsFontMetricsMac *metrics = (nsFontMetricsMac*) mGS->mFontMetrics;
|
||||
nsUnicodeFontMappingMac* fontmap = metrics->GetUnicodeFontMapping();
|
||||
|
||||
PRInt32 x = aX;
|
||||
PRInt32 y = aY;
|
||||
|
||||
nscoord ascent = 0;
|
||||
mGS->mFontMetrics->GetMaxAscent(ascent);
|
||||
y += ascent;
|
||||
|
||||
mGS->mTMatrix->TransformCoord(&x,&y);
|
||||
|
||||
PRUint32 i;
|
||||
PRInt32 currentX = x;
|
||||
PRUint32 thisWidth = 0;
|
||||
const short *scriptFallbackFonts = fontmap->GetScriptFallbackFonts();
|
||||
|
||||
if(aSpacing) {
|
||||
int buffer[STACK_TREASHOLD];
|
||||
int* spacing = (aLength <= STACK_TREASHOLD ? buffer : new int[aLength]);
|
||||
if (spacing)
|
||||
{
|
||||
mGS->mTMatrix->ScaleXCoords(aSpacing, aLength, spacing);
|
||||
for(i =0; i < aLength; i++)
|
||||
{
|
||||
short curFontNum = fontmap->GetFontID(aString[i]);
|
||||
res = DrawTextSegment(aString+i, 1, curFontNum, scriptFallbackFonts, currentX, y, thisWidth);
|
||||
if(NS_FAILED(res))
|
||||
goto end_of_func;
|
||||
|
||||
currentX += spacing[i];
|
||||
}
|
||||
if (spacing != buffer)
|
||||
delete[] spacing;
|
||||
}
|
||||
else {
|
||||
res = NS_ERROR_OUT_OF_MEMORY;
|
||||
goto end_of_func;
|
||||
}
|
||||
} else {
|
||||
short fontNum[2];
|
||||
fontNum[0] = fontNum[1] = BAD_FONT_NUM;
|
||||
PRUint32 start;
|
||||
for(i =0, start = 0; i < aLength; i++)
|
||||
{
|
||||
fontNum[ i % 2] = fontmap->GetFontID(aString[i]);
|
||||
if((fontNum[0] != fontNum[1]) && (0 != i))
|
||||
{ // start new font run...
|
||||
res = DrawTextSegment(aString+start, i-start, fontNum[ (i+1) % 2], scriptFallbackFonts, currentX, y, thisWidth);
|
||||
if(NS_FAILED(res))
|
||||
goto end_of_func;
|
||||
currentX += thisWidth;
|
||||
start = i;
|
||||
}
|
||||
}
|
||||
res = DrawTextSegment(aString+start, aLength-start, fontNum[ (i+1) % 2], scriptFallbackFonts, currentX, y, thisWidth);
|
||||
if(NS_FAILED(res))
|
||||
goto end_of_func;
|
||||
}
|
||||
|
||||
end_of_func:
|
||||
|
||||
return res;
|
||||
}
|
||||
//------------------------------------------------------------------------
|
||||
NS_IMETHODIMP nsUnicodeRenderingToolkit :: PrepareToDraw(float aP2T, nsIDeviceContext* aContext, GraphicState* aGS, GrafPtr aPort)
|
||||
{
|
||||
mP2T = aP2T;
|
||||
mContext = aContext;
|
||||
mGS = aGS;
|
||||
mPort = aPort;
|
||||
return NS_OK;
|
||||
}
|
||||
|
|
@ -0,0 +1,70 @@
|
|||
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
||||
*
|
||||
* The contents of this file are subject to the Netscape Public License
|
||||
* Version 1.0 (the "NPL"); you may not use this file except in
|
||||
* compliance with the NPL. You may obtain a copy of the NPL at
|
||||
* http://www.mozilla.org/NPL/
|
||||
*
|
||||
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
||||
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
||||
* for the specific language governing rights and limitations under the
|
||||
* NPL.
|
||||
*
|
||||
* The Initial Developer of this code under the NPL is Netscape
|
||||
* Communications Corporation. Portions created by Netscape are
|
||||
* Copyright (C) 1999 Netscape Communications Corporation. All Rights
|
||||
* Reserved.
|
||||
*/
|
||||
|
||||
#ifndef nsUnicodeRenderingToolkit_h__
|
||||
#define nsUnicodeRenderingToolkit_h__
|
||||
#include "nsATSUIUtils.h"
|
||||
#include <UnicodeConverter.h>
|
||||
class nsUnicodeFallbackCache;
|
||||
class nsIDeviceContext;
|
||||
class GraphicState;
|
||||
|
||||
class nsUnicodeRenderingToolkit
|
||||
{
|
||||
nsUnicodeRenderingToolkit() {};
|
||||
~nsUnicodeRenderingToolkit() {};
|
||||
public:
|
||||
NS_IMETHOD PrepareToDraw(float aP2T, nsIDeviceContext* aContext, GraphicState* aGS, GrafPtr aPort);
|
||||
NS_IMETHOD GetWidth(const PRUnichar *aString, PRUint32 aLength, nscoord &aWidth,
|
||||
PRInt32 *aFontID);
|
||||
NS_IMETHOD DrawString(const PRUnichar *aString, PRUint32 aLength, nscoord aX, nscoord aY,
|
||||
PRInt32 aFontID,
|
||||
const nscoord* aSpacing);
|
||||
private:
|
||||
// Unicode text measure/drawing functions
|
||||
UnicodeToTextInfo GetConverterByScript(ScriptCode sc);
|
||||
PRBool TECFallbackGetWidth(const PRUnichar *pChar, short& oWidth,
|
||||
short fontNum, const short* scriptFallbackFonts);
|
||||
PRBool TECFallbackDrawChar(const PRUnichar *pChar, PRInt32 x, PRInt32 y, short& oWidth,
|
||||
short fontNum, const short* scriptFallbackFonts);
|
||||
|
||||
PRBool ATSUIFallbackGetWidth(const PRUnichar *pChar, short& oWidth, short fontNum, short aSize, PRBool aBold, PRBool aItalic, nscolor aColor);
|
||||
PRBool ATSUIFallbackDrawChar(const PRUnichar *pChar, PRInt32 x, PRInt32 y, short& oWidth, short fontNum, short aSize, PRBool aBold, PRBool aItalic, nscolor aColor);
|
||||
|
||||
PRBool QuestionMarkFallbackGetWidth(const PRUnichar *pChar, short& oWidth);
|
||||
PRBool QuestionMarkFallbackDrawChar(const PRUnichar *pChar, PRInt32 x, PRInt32 y, short& oWidth);
|
||||
|
||||
void GetScriptTextWidth(const char* aText, ByteCount aLen, short& aWidth);
|
||||
void DrawScriptText(const char* aText, ByteCount aLen, PRInt32 x, PRInt32 y, short& aWidth);
|
||||
|
||||
nsresult GetTextSegmentWidth( const PRUnichar *aString, PRUint32 aLength, short fontNum, const short *scriptFallbackFonts,
|
||||
PRUint32& oWidth);
|
||||
nsresult DrawTextSegment( const PRUnichar *aString, PRUint32 aLength, short fontNum, const short *scriptFallbackFonts,
|
||||
PRInt32 x, PRInt32 y, PRUint32& oWidth);
|
||||
|
||||
nsUnicodeFallbackCache* GetTECFallbackCache();
|
||||
private:
|
||||
float mP2T; // Pixel to Twip conversion factor
|
||||
nsIDeviceContext * mContext;
|
||||
GraphicState * mGS; // current graphic state - shortcut for mCurrentSurface->GetGS()
|
||||
|
||||
GrafPtr mPort; // current grafPort - shortcut for mCurrentSurface->GetPort()
|
||||
nsATSUIToolkit mATSUIToolkit;
|
||||
|
||||
};
|
||||
#endif /* nsUnicodeRenderingToolkit_h__ */
|
||||
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