workspace/kcontrol/kfontinst/lib/FcEngine.h

   1 #ifndef __FC_ENGINE_H__
   2 #define __FC_ENGINE_H__
   3
   4 /*
   5  * KFontInst - KDE Font Installer
   6  *
   7  * Copyright 2003-2007 Craig Drummond <craig@kde.org>
   8  *
   9  * ----
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; see the file COPYING.  If not, write to
  23  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  24  * Boston, MA 02110-1301, USA.
  25  */
  26
  27 #include <config-workspace.h>
  28
  29 #include <QtCore/QVector>
  30 #include <QtCore/QRect>
  31 #include <QtGui/QFont>
  32 #include <QtGui/QColor>
  33 #include <KDE/KUrl>
  34 #include <fontconfig/fontconfig.h>
  35 #include "KfiConstants.h"
  36 #include "Misc.h"
  37 #include "Fc.h"
  38
  39 //Enable the following to use locale aware family name - if font supports this.
  40 //#define KFI_USE_TRANSLATED_FAMILY_NAME
  41
  42 class QPixmap;
  43 class KConfig;
  44
  45 typedef struct _XftFont  XftFont;
  46 typedef struct _XftDraw  XftDraw;
  47 typedef struct _XftColor XftColor;
  48
  49 namespace KFI
  50 {
  51
  52 class KDE_EXPORT CFcEngine
  53 {
  54     public:
  55
  56     struct TRange
  57     {
  58         TRange(quint32 f=0, quint32 t=0) : from(f), to(t) { }
  59         bool null() const { return 0==from && 0==to; }
  60
  61         quint32 from,
  62                 to;
  63     };
  64
  65     struct TChar : public QRect
  66     {
  67         TChar(const QRect &r=QRect(), quint32 u=0)
  68             : QRect(r), ucs4(u) { }
  69
  70         quint32 ucs4;
  71     };
  72
  73     static CFcEngine * instance();
  74
  75     CFcEngine(bool init=true);
  76     ~CFcEngine();
  77
  78     void                  readConfig(KConfig &cfg);
  79     void                  writeConfig(KConfig &cfg);
  80     static void           setDirty() { theirFcDirty=true; }
  81     bool                  drawPreview(const QString &item, QPixmap &pix, const QColor &col, int h,
  82                                       quint32 style=KFI_NO_STYLE_INFO, int face=0);
  83     bool                  draw(const KUrl &url, int w, int h, QPixmap &pix, int faceNo, bool thumb,
  84                                const QList<TRange> &range=QList<TRange>(), QList<TChar> *chars=NULL,
  85                                const QString &name=QString(), quint32 style=KFI_NO_STYLE_INFO);
  86     int                   getNumIndexes() { return itsIndexCount; } // Only valid after draw has been called!
  87     const QString &       getName(const KUrl &url, int faceNo=0);
  88     bool                  getInfo(const KUrl &url, int faceNo, Misc::TFont &info);
  89     static QFont          getQFont(const QString &family, quint32 style, int size);
  90     const QVector<int> &  sizes() const     { return itsSizes; }
  91     bool                  atMin() const     { return 0==itsSizes.size() || 0==itsAlphaSizeIndex; }
  92     bool                  atMax() const     { return 0==itsSizes.size() || itsSizes.size()-1==itsAlphaSizeIndex; }
  93     void                  zoomIn()          { if(!atMax()) itsAlphaSizeIndex++; }
  94     void                  zoomOut()         { if(!atMin()) itsAlphaSizeIndex--; }
  95     int                   alphaSize() const { return itsSizes[itsAlphaSizeIndex]; }
  96     quint32               styleVal() { return FC::createStyleVal(itsWeight, itsWidth, itsSlant); }
  97
  98     const QString &       getPreviewString()                  { return itsPreviewString; }
  99     static QString        getDefaultPreviewString();
 100     void                  setPreviewString(const QString &str)
 101                             { itsPreviewString=str.isEmpty() ? getDefaultPreviewString() : str; }
 102     static QString        getUppercaseLetters();
 103     static QString        getLowercaseLetters();
 104     static QString        getPunctuation();
 105
 106     static void           setTextCol(const QColor &col) { theirTextCol=col; }
 107     static const QColor & textCol()                     { return theirTextCol; }
 108
 109     static const int      constScalableSizes[];
 110     static const int      constDefaultAlphaSize;
 111
 112     private:
 113
 114     bool                  parseUrl(const KUrl &url, int faceNo);
 115     bool                  parseName(const QString &name, quint32 style=KFI_NO_STYLE_INFO, const KUrl &url=KUrl());
 116     XftFont *             queryFont();
 117     XftFont *             getFont(int size);
 118     bool                  isCorrect(XftFont *f, bool checkFamily);
 119     void                  getSizes();
 120     void                  drawLine(QPixmap &pix, int x, int y, int w, int h);
 121     void                  drawName(QPixmap &pix, XftDraw *xftDraw, XftColor *xftCol, int x, int &y, int w, int h);
 122     void                  addFontFile(const QString &file);
 123     void                  reinit();
 124
 125     private:
 126
 127     bool          itsInstalled;
 128     QString       itsName,
 129                   itsFileName,
 130                   itsDescriptiveName;
 131     int           itsIndex,
 132                   itsIndexCount,
 133                   itsWeight,
 134                   itsWidth,
 135                   itsSlant,
 136                   itsAlphaSizeIndex;
 137     QVector<int>  itsSizes;
 138     KUrl          itsLastUrl;
 139     FcBool        itsScalable;
 140     QStringList   itsAddedFiles;
 141     QString       itsPreviewString;
 142     static bool   theirFcDirty;
 143     static QColor theirTextCol;
 144 };
 145
 146 }
 147
 148 #endif