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100 lines
3.2 KiB
C++
100 lines
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; 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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*
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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) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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// ===========================================================================
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// UUnicodeTextHandler.cp
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// ===========================================================================
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//
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// Authror: Frank Tang ftang@netscape.com
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/*-----------------------------------------------------------------------------
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UUnicodeTextHandler
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Switch font to draw Unicode (UCS2)
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It use Singleton (See Design Patterns by Erich Gamma )
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-----------------------------------------------------------------------------*/
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#include "UUnicodeTextHandler.h"
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UUnicodeTextHandler* UUnicodeTextHandler::fTheOnlyInstance = NULL;
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UUnicodeTextHandler* UUnicodeTextHandler::Instance()
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{
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if(fTheOnlyInstance == NULL)
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fTheOnlyInstance = new UUnicodeTextHandler();
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return fTheOnlyInstance;
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}
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void UUnicodeTextHandler::DrawUnicode(UFontSwitcher* fs, INTL_Unicode* unicode, int len)
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{
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INTL_CompoundStr* cs = INTL_CompoundStrFromUnicode(unicode, len);
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if(cs)
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{
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INTL_Encoding_ID encoding;
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unsigned char* outtext;
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INTL_CompoundStrIterator iter;
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for(iter = INTL_CompoundStrFirstStr((INTL_CompoundStrIterator)cs, &encoding , &outtext);
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iter != NULL;
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iter = INTL_CompoundStrNextStr(iter, &encoding, &outtext))
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{
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if((outtext) && (*outtext))
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{
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fs->EncodingTextFont(encoding);
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::DrawText(outtext, 0, XP_STRLEN((char*)outtext));
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}
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}
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INTL_CompoundStrDestroy(cs);
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}
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}
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short UUnicodeTextHandler::UnicodeWidth(UFontSwitcher* fs, INTL_Unicode* unicode, int len)
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{
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short width = 0;
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INTL_CompoundStr* cs = INTL_CompoundStrFromUnicode(unicode, len);
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if(cs)
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{
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INTL_Encoding_ID encoding;
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unsigned char* outtext;
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INTL_CompoundStrIterator iter;
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for(iter = INTL_CompoundStrFirstStr((INTL_CompoundStrIterator)cs, &encoding , &outtext);
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iter != NULL;
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iter = INTL_CompoundStrNextStr(iter, &encoding, &outtext))
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{
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if((outtext) && (*outtext))
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{
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fs->EncodingTextFont(encoding);
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width += ::TextWidth(outtext, 0, XP_STRLEN((char*)outtext));
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}
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}
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INTL_CompoundStrDestroy(cs);
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}
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return width;
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}
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void UUnicodeTextHandler::GetFontInfo (UFontSwitcher* fs, FontInfo* fi)
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{
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FontInfo cur;
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int16 *list;
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int16 num;
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list = INTL_GetUnicodeCSIDList(&num);
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fi->ascent = fi->descent = fi->widMax = fi->leading = 0;
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for(int i = 0; i < num; i++)
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{
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fs->EncodingTextFont(list[i]);
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::GetFontInfo(&cur);
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if(fi->ascent < cur.ascent) fi->ascent = cur.ascent;
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if(fi->descent < cur.descent) fi->descent = cur.descent;
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if(fi->widMax < cur.widMax) fi->widMax = cur.widMax;
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if(fi->leading < cur.leading) fi->leading = cur.leading;
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}
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}
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