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