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lightning-sunbird  0.9+nobinonly
nsStylClipboardUtils.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,
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00015  * The Original Code is Mozilla.
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00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
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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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00037 
00038 #include "nsStylClipboardUtils.h"
00039 #include "nsMemory.h"
00040 #include "nsCarbonHelpers.h"
00041 
00042 #include <Appearance.h>
00043 
00044 nsresult CreateStylFromScriptRuns(ScriptCodeRun *scriptCodeRuns,
00045                                   ItemCount scriptRunOutLen,
00046                                   char **stylData,
00047                                   PRInt32 *stylLen)
00048 {
00049   PRInt32 scrpRecLen = sizeof(short) + sizeof(ScrpSTElement) * scriptRunOutLen;
00050   StScrpRec *scrpRec = NS_REINTERPRET_CAST(StScrpRec*, 
00051                                            nsMemory::Alloc(scrpRecLen));
00052   NS_ENSURE_TRUE(scrpRec, NS_ERROR_OUT_OF_MEMORY);
00053   
00054   OSErr err = noErr;    
00055   Str255 themeFontName;
00056   SInt16 textSize;
00057   Style textStyle;
00058   short fontFamilyID;
00059   FontInfo fontInfo;
00060   RGBColor textColor;
00061   textColor.red = textColor.green = textColor.blue = 0;
00062   
00063   // save font settings
00064   CGrafPtr curPort;
00065   short saveFontFamilyID;
00066   SInt16 saveTextSize;
00067   Style saveTextStyle;
00068   ::GetPort((GrafPtr*)&curPort);
00069   saveFontFamilyID = ::GetPortTextFont(curPort);
00070   saveTextSize = ::GetPortTextSize(curPort);
00071   saveTextStyle = ::GetPortTextFace(curPort);
00072   
00073   scrpRec->scrpNStyles = scriptRunOutLen;
00074   for (ItemCount i = 0; i < scriptRunOutLen; i++) {
00075     scrpRec->scrpStyleTab[i].scrpStartChar = scriptCodeRuns[i].offset;
00076     
00077     err = ::GetThemeFont(
00078                          kThemeApplicationFont, 
00079                          scriptCodeRuns[i].script, 
00080                          themeFontName, 
00081                          &textSize, 
00082                          &textStyle);
00083     if (err != noErr)
00084       break;
00085       
00086     ::GetFNum(themeFontName, &fontFamilyID);
00087       
00088     ::TextFont(fontFamilyID);
00089     ::TextSize(textSize);
00090     ::TextFace(textStyle);
00091     ::GetFontInfo(&fontInfo);
00092     
00093     scrpRec->scrpStyleTab[i].scrpFont = fontFamilyID;
00094     scrpRec->scrpStyleTab[i].scrpHeight = fontInfo.ascent +
00095                                           fontInfo.descent +
00096                                           fontInfo.leading;
00097     scrpRec->scrpStyleTab[i].scrpAscent = fontInfo.ascent;
00098     scrpRec->scrpStyleTab[i].scrpFace = textStyle;
00099     scrpRec->scrpStyleTab[i].scrpSize = textSize;
00100     scrpRec->scrpStyleTab[i].scrpColor = textColor;
00101   }
00102        
00103   // restore font settings
00104   ::TextFont(saveFontFamilyID);
00105   ::TextSize(saveTextSize);
00106   ::TextFace(saveTextStyle);
00107   
00108   if (err != noErr) {
00109     nsMemory::Free(scrpRec);
00110     return NS_ERROR_FAILURE;
00111   }
00112 
00113   *stylData = NS_REINTERPRET_CAST(char*, scrpRec);
00114   *stylLen = scrpRecLen;
00115          
00116   return NS_OK;
00117 }