Kate

katefont.cpp

00001 /* This file is part of the KDE libraries
00002    Copyright (C) 2002 Christian Couder <christian@kdevelop.org>
00003    Copyright (C) 2001 Christoph Cullmann <cullmann@kde.org>
00004    Copyright (C) 2001 Joseph Wenninger <jowenn@kde.org>
00005    Copyright (C) 1999 Jochen Wilhelmy <digisnap@cs.tu-berlin.de>
00006 
00007    This library is free software; you can redistribute it and/or
00008    modify it under the terms of the GNU Library General Public
00009    License version 2 as published by the Free Software Foundation.
00010 
00011    This library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Library General Public License for more details.
00015 
00016    You should have received a copy of the GNU Library General Public License
00017    along with this library; see the file COPYING.LIB.  If not, write to
00018    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019    Boston, MA 02110-1301, USA.
00020 */
00021 
00022 #include "katefont.h"
00023 
00024 #include <kglobalsettings.h>
00025 
00026 #include <qfontinfo.h>
00027 
00028 //
00029 // KateFontMetrics implementation
00030 //
00031 
00032 KateFontMetrics::KateFontMetrics(const QFont& f) : QFontMetrics(f)
00033 {
00034   for (int i=0; i<256; i++) warray[i]=0;
00035 }
00036 
00037 KateFontMetrics::~KateFontMetrics()
00038 {
00039   for (int i=0; i<256; i++)
00040     delete[] warray[i];
00041 }
00042 
00043 short * KateFontMetrics::createRow (short *wa, uchar row)
00044 {
00045   wa=warray[row]=new short[256];
00046 
00047   for (int i=0; i<256; i++) wa[i]=-1;
00048 
00049   return wa;
00050 }
00051 
00052 int KateFontMetrics::width(QChar c)
00053 {
00054   uchar cell=c.cell();
00055   uchar row=c.row();
00056   short *wa=warray[row];
00057 
00058   if (!wa)
00059     wa = createRow (wa, row);
00060 
00061   if (wa[cell]<0) wa[cell]=(short) QFontMetrics::width(c);
00062 
00063   return (int)wa[cell];
00064 }
00065 
00066 //
00067 // KateFontStruct implementation
00068 //
00069 
00070 KateFontStruct::KateFontStruct()
00071 : myFont(KGlobalSettings::fixedFont()),
00072   myFontBold(KGlobalSettings::fixedFont()),
00073   myFontItalic(KGlobalSettings::fixedFont()),
00074   myFontBI(KGlobalSettings::fixedFont()),
00075   myFontMetrics(myFont),
00076   myFontMetricsBold(myFontBold),
00077   myFontMetricsItalic(myFontItalic),
00078   myFontMetricsBI(myFontBI),
00079   m_fixedPitch (false)
00080 {
00081   updateFontData ();
00082 }
00083 
00084 KateFontStruct::~KateFontStruct()
00085 {
00086 }
00087 
00088 void KateFontStruct::updateFontData ()
00089 {
00090   int maxAscent = myFontMetrics.ascent();
00091   int maxDescent = myFontMetrics.descent();
00092 
00093   fontHeight = maxAscent + maxDescent + 1;
00094   fontAscent = maxAscent;
00095   
00096   m_fixedPitch = QFontInfo( myFont ).fixedPitch();
00097 }
00098 
00099 void KateFontStruct::setFont (const QFont & font)
00100 {
00101   QFontMetrics testFM (font);
00102 
00103   // no valid font tried
00104   if ((testFM.ascent() + testFM.descent() + 1) < 1)
00105     return;
00106 
00107   myFont = font;
00108 
00109   myFontBold = QFont (font);
00110   myFontBold.setBold (true);
00111 
00112   myFontItalic = QFont (font);
00113   myFontItalic.setItalic (true);
00114 
00115   myFontBI = QFont (font);
00116   myFontBI.setBold (true);
00117   myFontBI.setItalic (true);
00118 
00119   myFontMetrics = KateFontMetrics (myFont);
00120   myFontMetricsBold = KateFontMetrics (myFontBold);
00121   myFontMetricsItalic = KateFontMetrics (myFontItalic);
00122   myFontMetricsBI = KateFontMetrics (myFontBI);
00123 
00124   updateFontData ();
00125 }
00126 
00127 // kate: space-indent on; indent-width 2; replace-tabs on;
Kate

katefont.cpp

Kate

API Reference
