/**************************************************************************** ** ** Text engine classes ** ** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved. ** ** This file is part of the kernel module of the TQt GUI Toolkit. ** ** This file may be used under the terms of the GNU General ** Public License versions 2.0 or 3.0 as published by the Free ** Software Foundation and appearing in the files LICENSE.GPL2 ** and LICENSE.GPL3 included in the packaging of this file. ** Alternatively you may (at your option) use any later version ** of the GNU General Public License if such license has been ** publicly approved by Trolltech ASA (or its successors, if any) ** and the KDE Free TQt Foundation. ** ** Please review the following information to ensure GNU General ** Public Licensing requirements will be met: ** http://trolltech.com/products/qt/licenses/licensing/opensource/. ** If you are unsure which license is appropriate for your use, please ** review the following information: ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview ** or contact the sales department at sales@trolltech.com. ** ** This file may be used under the terms of the Q Public License as ** defined by Trolltech ASA and appearing in the file LICENSE.TQPL ** included in the packaging of this file. Licensees holding valid TQt ** Commercial licenses may use this file in accordance with the TQt ** Commercial License Agreement provided with the Software. ** ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted ** herein. ** **********************************************************************/ #include <assert.h> TQScriptItemArray::~TQScriptItemArray() { clear(); free( d ); } void TQScriptItemArray::clear() { if ( d ) { for ( unsigned int i = 0; i < d->size; i++ ) { TQScriptItem &si = d->items[i]; if ( si.fontEngine ) si.fontEngine->deref(); } d->size = 0; } } void TQScriptItemArray::resize( int s ) { int alloc = (s + 8) >> 3 << 3; d = (TQScriptItemArrayPrivate *)realloc( d, sizeof( TQScriptItemArrayPrivate ) + sizeof( TQScriptItem ) * alloc ); d->alloc = alloc; } void TQTextEngine::shape( int item ) const { assert( item < items.size() ); TQScriptItem &si = items[item]; if ( si.num_glyphs ) return; TQFont::Script script = (TQFont::Script)si.analysis.script; si.glyph_data_offset = used; if ( !si.fontEngine ) si.fontEngine = fnt->engineForScript( script ); si.fontEngine->ref(); si.ascent = si.fontEngine->ascent(); si.descent = si.fontEngine->descent(); si.num_glyphs = 0; if ( si.fontEngine && si.fontEngine != (TQFontEngine*)-1 ) { TQShaperItem shaper_item; shaper_item.script = si.analysis.script; shaper_item.string = &string; shaper_item.from = si.position; shaper_item.length = length(item); shaper_item.font = si.fontEngine; shaper_item.num_glyphs = TQMAX(int(num_glyphs - used), shaper_item.length); shaper_item.flags = si.analysis.bidiLevel % 2 ? RightToLeft : 0; shaper_item.has_positioning = FALSE; while (1) { // tqDebug(" . num_glyphs=%d, used=%d, item.num_glyphs=%d", num_glyphs, used, shaper_item.num_glyphs); ensureSpace(shaper_item.num_glyphs); shaper_item.num_glyphs = num_glyphs - used; // tqDebug(" .. num_glyphs=%d, used=%d, item.num_glyphs=%d", num_glyphs, used, shaper_item.num_glyphs); shaper_item.glyphs = glyphs(&si); shaper_item.advances = advances(&si); shaper_item.offsets = offsets(&si); shaper_item.attributes = glyphAttributes(&si); shaper_item.log_clusters = logClusters(&si); if (scriptEngines[shaper_item.script].shape(&shaper_item)) break; } si.num_glyphs = shaper_item.num_glyphs; si.hasPositioning = shaper_item.has_positioning; } ((TQTextEngine *)this)->used += si.num_glyphs; si.width = 0; advance_t *advances = this->advances( &si ); advance_t *end = advances + si.num_glyphs; while ( advances < end ) { // tqDebug("advances[%d] = %d", advances - this->advances(&si), *advances); si.width += *(advances++); } return; }