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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>qfontmanager_qws.h</h1>
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<p>This is the verbatim text of the qfontmanager_qws.h include file. It is provided only for illustration; the copyright remains with Trolltech.
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<hr>
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<pre>
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/****************************************************************************
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** $Id: qt/qfontmanager_qws.h 3.3.8 edited Jan 11 14:38 $
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**
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** Definition of font rendering infrastructure for Embedded TQt
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**
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** Created : 940721
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of the kernel module of the TQt GUI Toolkit.
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**
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** This file may be used under the terms of the GNU General Public
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** License versions 2.0 or 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Alternatively you may (at your option) use any
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** later version of the GNU General Public License if such license has
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** been publicly approved by Trolltech ASA (or its successors, if any)
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** and the KDE Free TQt Foundation.
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**
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** Please review the following information to ensure GNU General
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** Public Licensing requirements will be met:
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** http://trolltech.com/products/qt/licenses/licensing/opensource/.
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** If you are unsure which license is appropriate for your use, please
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** review the following information:
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** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
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** or contact the sales department at sales@trolltech.com.
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**
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** Licensees holding valid TQt Commercial licenses may use this file in
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** accordance with the TQt Commercial License Agreement provided with
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** the Software.
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**
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** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
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** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
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** herein.
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**
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**********************************************************************/
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#ifndef TQFONTMANAGER_QWS_H
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#define TQFONTMANAGER_QWS_H
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#ifndef QT_H
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#include "qfont.h"
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#include "qptrlist.h"
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#include <private/qtextengine_p.h>
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#endif // QT_H
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// These are stored in the shared memory segment in front of their
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// data, and indexed at the start of the segment
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// This needs to be a multiple of 64 bits
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class TQFontDef;
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class Q_PACKED TQGlyphMetrics {
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public:
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Q_UINT8 linestep;
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Q_UINT8 width;
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Q_UINT8 height;
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Q_UINT8 flags;
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Q_INT8 bearingx; // Difference from pen position to glyph's left bbox
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Q_UINT8 advance; // Difference between pen positions
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Q_INT8 bearingy; // Used for putting characters on baseline
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Q_INT8 reserved; // Do not use
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// Flags:
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// RendererOwnsData - the renderer is responsible for glyph data
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// memory deletion otherwise TQGlyphTree must
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// delete [] the data when the glyph is deleted.
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enum Flags { RendererOwnsData=0x01 };
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};
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class TQGlyph {
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public:
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TQGlyph() { metrics=0; data=0; }
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TQGlyph(TQGlyphMetrics* m, uchar* d) :
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metrics(m), data(d) { }
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~TQGlyph() {}
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TQGlyphMetrics* metrics;
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uchar* data;
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};
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class TQFontFactory;
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class TQDiskFont;
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// This is a particular font instance at a particular resolution
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// e.g. Truetype Times, 10 point. There's only one of these though;
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// we want to share generated glyphs
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class TQRenderedFont {
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public:
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// Normal font-type is monochrome; glyph data is a
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// bitmap, which doesn't use much memory
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// Initialise for name A, renderer B, font type C, D glyphs
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TQRenderedFont(TQDiskFont *,const TQFontDef&);
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virtual ~TQRenderedFont();
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TQFontDef fontDef() const;
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int refcount;
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int ptsize;
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bool italic;
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unsigned int weight;
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void ref() { refcount++; }
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bool deref() { refcount--; return refcount==0; }
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bool match(const TQFontDef &);
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TQDiskFont* diskfont;
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int fascent,fdescent;
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int fleftbearing,frightbearing;
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int fmaxwidth;
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int fleading;
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int funderlinepos;
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int funderlinewidth;
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bool smooth;
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int maxchar;
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int ascent() { return fascent; }
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int descent() { return fdescent; }
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int width(int);
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int width( const TQString&, int =-1 );
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int leftBearing(int);
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int rightBearing(int);
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// Calling any of these can trigger a full-font metrics check
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// which can be expensive
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int minLeftBearing();
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int minRightBearing();
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int maxWidth();
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virtual bool inFont(glyph_t g) const=0;
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virtual TQGlyph render(glyph_t g)=0;
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private:
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};
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// Keeps track of available renderers and which font is which
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class TQDiskFontPrivate {};
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class TQDiskFont {
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public:
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TQDiskFont(TQFontFactory *f, const TQString& n, bool i, int w, int s,
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const TQString &fl, const TQString& fi) :
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factory(f), name(n), italic(i), weight(w), size(s), flags(fl), file(fi)
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{
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loaded=FALSE;
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p=0;
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}
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TQRenderedFont* load(const TQFontDef &);
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TQFontDef fontDef() const;
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TQFontFactory *factory;
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TQString name;
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bool italic;
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int weight;
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int size;
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TQString flags;
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TQString file;
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bool loaded;
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TQDiskFontPrivate * p;
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};
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class TQCachePolicy {
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public:
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virtual void cache(TQRenderedFont *)=0;
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virtual void uncache(TQRenderedFont *)=0;
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};
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// Exposed here so the default policy can be reset
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class TQDefaultCachePolicy : public TQCachePolicy {
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public:
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virtual void cache(TQRenderedFont *);
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virtual void uncache(TQRenderedFont *);
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};
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class TQFontManager {
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public:
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TQPtrList<TQFontFactory> factories;
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TQPtrList<TQRenderedFont> cachedfonts;
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TQPtrList<TQDiskFont> diskfonts;
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TQFontManager();
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~TQFontManager();
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// Font definition, type and color
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TQDiskFont * get(const TQFontDef &);
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static int cmpFontDef(const TQFontDef & goal, const TQFontDef & choice);
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static void initialize();
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static void cleanup();
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void setPolicy(TQCachePolicy *);
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void cache(TQRenderedFont * f) { policy->cache(f); }
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void uncache(TQRenderedFont * f) { policy->uncache(f); }
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TQRenderedFont * getCached(const TQFontDef &);
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private:
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TQCachePolicy * policy;
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};
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class TQFontFactory {
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public:
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TQFontFactory() {}
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virtual ~TQFontFactory() {}
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virtual TQRenderedFont * get(const TQFontDef &,TQDiskFont *)=0;
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virtual void load(TQDiskFont *) const=0;
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virtual void unload(TQDiskFont *) {}
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virtual TQString name()=0;
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};
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void qt_init_fonts();
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extern TQFontManager * qt_fontmanager;
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#endif
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</pre>
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<!-- eof -->
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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</table></div></address></body>
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</html>
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