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Diffstat (limited to 'src/kernel/tqtextengine_unix.cpp')
| -rw-r--r-- | src/kernel/tqtextengine_unix.cpp | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/kernel/tqtextengine_unix.cpp b/src/kernel/tqtextengine_unix.cpp new file mode 100644 index 000000000..0d5e3b920 --- /dev/null +++ b/src/kernel/tqtextengine_unix.cpp @@ -0,0 +1,127 @@ +/**************************************************************************** +** +** 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; +} + |