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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
commitd796c9dd933ab96ec83b9a634feedd5d32e1ba3f (patch)
tree6e3dcca4f77e20ec8966c666aac7c35bd4704053 /src/kernel/qtextengine_unix.cpp
downloadtqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.tar.gz
tqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.zip
Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
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+/****************************************************************************
+**
+** 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 retquirements 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) {
+// qDebug(" . 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;
+// qDebug(" .. 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 ) {
+// qDebug("advances[%d] = %d", advances - this->advances(&si), *advances);
+ si.width += *(advances++);
+ }
+
+ return;
+}
+