gfx/thebes/public/gfxWindowsPlatform.h

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
   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/
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  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
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  13  * License.
  14  *
  15  * The Original Code is Mozilla Foundation code.
  16  *
  17  * The Initial Developer of the Original Code is Mozilla Foundation.
  18  * Portions created by the Initial Developer are Copyright (C) 2006
  19  * the Initial Developer. All Rights Reserved.
  20  *
  21  * Contributor(s):
  22  *   Stuart Parmenter <pavlov@pavlov.net>
  23  *   Masayuki Nakano <masayuki@d-toybox.com>
  24  *
  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either the GNU General Public License Version 2 or later (the "GPL"), or
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  37  * ***** END LICENSE BLOCK ***** */
  38
  39 #ifndef GFX_WINDOWS_PLATFORM_H
  40 #define GFX_WINDOWS_PLATFORM_H
  41
  42 #include "gfxFontUtils.h"
  43 #include "gfxWindowsSurface.h"
  44 #include "gfxWindowsFonts.h"
  45 #include "gfxPlatform.h"
  46
  47 #include "nsVoidArray.h"
  48 #include "nsDataHashtable.h"
  49
  50 #include <windows.h>
  51
  52 class THEBES_API gfxWindowsPlatform : public gfxPlatform, private gfxFontInfoLoader {
  53 public:
  54     gfxWindowsPlatform();
  55     virtual ~gfxWindowsPlatform();
  56     static gfxWindowsPlatform *GetPlatform() {
  57         return (gfxWindowsPlatform*) gfxPlatform::GetPlatform();
  58     }
  59
  60     already_AddRefed<gfxASurface> CreateOffscreenSurface(const gfxIntSize& size,
  61                                                          gfxASurface::gfxImageFormat imageFormat);
  62
  63     nsresult GetFontList(const nsACString& aLangGroup,
  64                          const nsACString& aGenericFamily,
  65                          nsStringArray& aListOfFonts);
  66
  67     nsresult UpdateFontList();
  68
  69     void GetFontFamilyList(nsTArray<nsRefPtr<FontFamily> >& aFamilyArray);
  70
  71     nsresult ResolveFontName(const nsAString& aFontName,
  72                              FontResolverCallback aCallback,
  73                              void *aClosure, PRBool& aAborted);
  74
  75     nsresult GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName);
  76
  77     gfxFontGroup *CreateFontGroup(const nsAString &aFamilies,
  78                                   const gfxFontStyle *aStyle,
  79                                   gfxUserFontSet *aUserFontSet);
  80
  81     /**
  82      * Look up a local platform font using the full font face name (needed to support @font-face src local() )
  83      */
  84     virtual gfxFontEntry* LookupLocalFont(const nsAString& aFontName);
  85
  86     /**
  87      * Activate a platform font (needed to support @font-face src url() )
  88      */
  89     virtual gfxFontEntry* MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
  90                                            nsISupports *aLoader,
  91                                            const PRUint8 *aFontData,
  92                                            PRUint32 aLength);
  93
  94     /**
  95      * Check whether format is supported on a platform or not (if unclear, returns true)
  96      */
  97     virtual PRBool IsFontFormatSupported(nsIURI *aFontURI, PRUint32 aFormatFlags);
  98
  99     /* Given a string and a font we already have find the font that
 100      * supports the most code points and most closely resembles aFont
 101      *
 102      * this involves looking at the fonts on your machine and seeing which
 103      * code points they support as well as looking at things like the font
 104      * family, style, weight, etc.
 105      */
 106     already_AddRefed<gfxWindowsFont> FindFontForChar(PRUint32 aCh, gfxWindowsFont *aFont);
 107
 108     /* Find a FontFamily/FontEntry object that represents a font on your system given a name */
 109     FontFamily *FindFontFamily(const nsAString& aName);
 110     FontEntry *FindFontEntry(const nsAString& aName, const gfxFontStyle& aFontStyle);
 111
 112     PRBool GetPrefFontEntries(const nsCString& aLangGroup, nsTArray<nsRefPtr<FontEntry> > *array);
 113     void SetPrefFontEntries(const nsCString& aLangGroup, nsTArray<nsRefPtr<FontEntry> >& array);
 114
 115     typedef nsDataHashtable<nsStringHashKey, nsRefPtr<FontFamily> > FontTable;
 116
 117 private:
 118     void Init();
 119
 120     void InitBadUnderlineList();
 121
 122     static int CALLBACK FontEnumProc(const ENUMLOGFONTEXW *lpelfe,
 123                                      const NEWTEXTMETRICEXW *metrics,
 124                                      DWORD fontType, LPARAM data);
 125     static int CALLBACK FamilyAddStylesProc(const ENUMLOGFONTEXW *lpelfe,
 126                                             const NEWTEXTMETRICEXW *nmetrics,
 127                                             DWORD fontType, LPARAM data);
 128
 129     static PLDHashOperator FontGetStylesProc(nsStringHashKey::KeyType aKey,
 130                                              nsRefPtr<FontFamily>& aFontFamily,
 131                                              void* userArg);
 132
 133     static PLDHashOperator FontGetCMapDataProc(nsStringHashKey::KeyType aKey,
 134                                                nsRefPtr<FontFamily>& aFontFamily,
 135                                                void* userArg);
 136
 137     static int CALLBACK FontResolveProc(const ENUMLOGFONTEXW *lpelfe,
 138                                         const NEWTEXTMETRICEXW *metrics,
 139                                         DWORD fontType, LPARAM data);
 140
 141     static PLDHashOperator HashEnumFunc(nsStringHashKey::KeyType aKey,
 142                                         nsRefPtr<FontFamily>& aData,
 143                                         void* userArg);
 144
 145     static PLDHashOperator FindFontForCharProc(nsStringHashKey::KeyType aKey,
 146                                                nsRefPtr<FontFamily>& aFontFamily,
 147                                                void* userArg);
 148
 149     virtual cmsHPROFILE GetPlatformCMSOutputProfile();
 150
 151     static int PrefChangedCallback(const char*, void*);
 152
 153     // gfxFontInfoLoader overrides, used to load in font cmaps
 154     virtual void InitLoader();
 155     virtual PRBool RunLoader();
 156     virtual void FinishLoader();
 157
 158     FontTable mFonts;
 159     FontTable mFontAliases;
 160     FontTable mFontSubstitutes;
 161     nsStringArray mNonExistingFonts;
 162
 163     // when system-wide font lookup fails for a character, cache it to skip future searches
 164     gfxSparseBitSet mCodepointsWithNoFonts;
 165
 166     nsDataHashtable<nsCStringHashKey, nsTArray<nsRefPtr<FontEntry> > > mPrefFonts;
 167
 168     // data used as part of the font cmap loading process
 169     nsTArray<nsRefPtr<FontFamily> > mFontFamilies;
 170     PRUint32 mStartIndex;
 171     PRUint32 mIncrement;
 172     PRUint32 mNumFamilies;
 173 };
 174
 175 #endif /* GFX_WINDOWS_PLATFORM_H */