gfx/thebes/public/gfxOS2Fonts.h

   1 /* vim: set sw=4 sts=4 et cin: */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is OS/2 code in Thebes.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Peter Weilbacher <mozilla@Weilbacher.org>.
  19  * Portions created by the Initial Developer are Copyright (C) 2006
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
  26  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27  * in which case the provisions of the GPL or the LGPL are applicable instead
  28  * of those above. If you wish to allow use of your version of this file only
  29  * under the terms of either the GPL or the LGPL, and not to allow others to
  30  * use your version of this file under the terms of the MPL, indicate your
  31  * decision by deleting the provisions above and replace them with the notice
  32  * and other provisions required by the GPL or the LGPL. If you do not delete
  33  * the provisions above, a recipient may use your version of this file under
  34  * the terms of any one of the MPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37
  38 #ifndef GFX_OS2_FONTS_H
  39 #define GFX_OS2_FONTS_H
  40
  41 #include "gfxTypes.h"
  42 #include "gfxFont.h"
  43 #include "gfxMatrix.h"
  44 #include "nsDataHashtable.h"
  45
  46 #define INCL_GPI
  47 #include <os2.h>
  48 #include <cairo-os2.h>
  49 #include "cairo-ft.h" // includes fontconfig.h, too
  50 #include <freetype/tttables.h>
  51
  52 #include "nsICharsetConverterManager.h"
  53
  54 class gfxOS2FontEntry : public gfxFontEntry {
  55 public:
  56     gfxOS2FontEntry(const nsAString& aName) : gfxFontEntry(aName) {}
  57     ~gfxOS2FontEntry() {}
  58 };
  59
  60 class gfxOS2Font : public gfxFont {
  61 public:
  62     gfxOS2Font(gfxOS2FontEntry *aFontEntry, const gfxFontStyle *aFontStyle);
  63     virtual ~gfxOS2Font();
  64
  65     virtual const gfxFont::Metrics& GetMetrics();
  66     cairo_font_face_t *CairoFontFace();
  67     cairo_scaled_font_t *CairoScaledFont();
  68
  69     virtual nsString GetUniqueName();
  70
  71     // Get the glyphID of a space
  72     virtual PRUint32 GetSpaceGlyph() {
  73         if (!mMetrics)
  74             GetMetrics();
  75         return mSpaceGlyph;
  76     }
  77
  78     static already_AddRefed<gfxOS2Font> GetOrMakeFont(const nsAString& aName,
  79                                                       const gfxFontStyle *aStyle);
  80
  81 protected:
  82     virtual PRBool SetupCairoFont(gfxContext *aContext);
  83
  84 private:
  85     cairo_font_face_t *mFontFace;
  86     cairo_scaled_font_t *mScaledFont;
  87     Metrics *mMetrics;
  88     gfxFloat mAdjustedSize;
  89     PRUint32 mSpaceGlyph;
  90     int mHinting;
  91     PRBool mAntialias;
  92 };
  93
  94
  95 class THEBES_API gfxOS2FontGroup : public gfxFontGroup {
  96 public:
  97     gfxOS2FontGroup(const nsAString& aFamilies, const gfxFontStyle* aStyle, gfxUserFontSet *aUserFontSet);
  98     virtual ~gfxOS2FontGroup();
  99
 100     virtual gfxFontGroup *Copy(const gfxFontStyle *aStyle);
 101
 102     // create and initialize the textRun using FreeType font
 103     virtual gfxTextRun *MakeTextRun(const PRUnichar* aString, PRUint32 aLength,
 104                                     const Parameters* aParams, PRUint32 aFlags);
 105     virtual gfxTextRun *MakeTextRun(const PRUint8* aString, PRUint32 aLength,
 106                                     const Parameters* aParams, PRUint32 aFlags);
 107
 108     gfxOS2Font *GetFontAt(PRInt32 i) {
 109         // If it turns out to be hard for all clients that cache font
 110         // groups to call UpdateFontList at appropriate times, we could
 111         // instead consider just calling UpdateFontList from someplace
 112         // more central (such as here).
 113         NS_ASSERTION(!mUserFontSet || mCurrGeneration == GetGeneration(),
 114                      "Whoever was caching this font group should have "
 115                      "called UpdateFontList on it");
 116
 117 #ifdef DEBUG_thebes_2
 118         printf("gfxOS2FontGroup[%#x]::GetFontAt(%d), %#x, %#x\n",
 119                (unsigned)this, i, (unsigned)&mFonts, (unsigned)&mFonts[i]);
 120 #endif
 121         return static_cast<gfxOS2Font*>(static_cast<gfxFont*>(mFonts[i]));
 122     }
 123
 124 protected:
 125     void InitTextRun(gfxTextRun *aTextRun, const PRUint8 *aUTF8Text,
 126                      PRUint32 aUTF8Length, PRUint32 aUTF8HeaderLength);
 127     void CreateGlyphRunsFT(gfxTextRun *aTextRun, const PRUint8 *aUTF8,
 128                            PRUint32 aUTF8Length);
 129     static PRBool FontCallback(const nsAString& aFontName,
 130                                const nsACString& aGenericName, void *aClosure);
 131
 132 private:
 133     PRBool mEnableKerning;
 134 };
 135
 136 #endif /* GFX_OS2_FONTS_H */