DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222
/* vim: set sw=4 sts=4 et cin: */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is OS/2 code in Thebes.
 *
 * The Initial Developer of the Original Code is
 * Peter Weilbacher <mozilla@Weilbacher.org>.
 * Portions created by the Initial Developer are Copyright (C) 2006-2007
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   author of code taken from gfxPlatformGtk:
 *     Masayuki Nakano <masayuki@d-toybox.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "gfxOS2Platform.h"
#include "gfxOS2Surface.h"
#include "gfxImageSurface.h"
#include "gfxOS2Fonts.h"
#include "nsTArray.h"

#include "gfxFontconfigUtils.h"
//#include <fontconfig/fontconfig.h>

/**********************************************************************
 * class gfxOS2Platform
 **********************************************************************/
gfxFontconfigUtils *gfxOS2Platform::sFontconfigUtils = nsnull;

gfxOS2Platform::gfxOS2Platform()
{
#ifdef DEBUG_thebes
    printf("gfxOS2Platform::gfxOS2Platform()\n");
#endif
    // this seems to be reasonably early in the process and only once,
    // so it's a good place to initialize OS/2 cairo stuff
    cairo_os2_init();
#ifdef DEBUG_thebes
    printf("  cairo_os2_init() was called\n");
#endif
    if (!sFontconfigUtils) {
        sFontconfigUtils = gfxFontconfigUtils::GetFontconfigUtils();
    }
}

gfxOS2Platform::~gfxOS2Platform()
{
#ifdef DEBUG_thebes
    printf("gfxOS2Platform::~gfxOS2Platform()\n");
#endif
    gfxFontconfigUtils::Shutdown();
    sFontconfigUtils = nsnull;

    // clean up OS/2 cairo stuff
    cairo_os2_fini();
#ifdef DEBUG_thebes
    printf("  cairo_os2_fini() was called\n");
#endif
}

already_AddRefed<gfxASurface>
gfxOS2Platform::CreateOffscreenSurface(const gfxIntSize& aSize,
                                       gfxASurface::gfxContentType contentType)
{
#ifdef DEBUG_thebes_2
    printf("gfxOS2Platform::CreateOffscreenSurface(%d/%d, %d)\n",
           aSize.width, aSize.height, aImageFormat);
#endif
    gfxASurface *newSurface = nsnull;

    // we only ever seem to get aImageFormat=0 or ImageFormatARGB32 but
    // I don't really know if we need to differ between ARGB32 and RGB24 here
    if (contentType == gfxASurface::CONTENT_COLOR_ALPHA ||
        contentType == gfxASurface::CONTENT_COLOR)
    {
        newSurface = new gfxOS2Surface(aSize, gfxASurface::FormatFromContent(contentType));
    } else if (contentType == gfxASurface::CONTENT_ALPHA) {
        newSurface = new gfxImageSurface(aSize, gfxASurface::FormatFromContent(contentType));
    } else {
        return nsnull;
    }

    NS_IF_ADDREF(newSurface);
    return newSurface;
}

nsresult
gfxOS2Platform::GetFontList(nsIAtom *aLangGroup,
                            const nsACString& aGenericFamily,
                            nsTArray<nsString>& aListOfFonts)
{
#ifdef DEBUG_thebes
    const char *langgroup = "(null)";
    if (aLangGroup) {
        aLangGroup->GetUTF8String(&langgroup);
    }
    char *family = ToNewCString(aGenericFamily);
    printf("gfxOS2Platform::GetFontList(%s, %s, ..)\n",
           langgroup, family);
    free(family);
#endif
    return sFontconfigUtils->GetFontList(aLangGroup, aGenericFamily,
                                         aListOfFonts);
}

nsresult gfxOS2Platform::UpdateFontList()
{
#ifdef DEBUG_thebes
    printf("gfxOS2Platform::UpdateFontList()\n");
#endif
    mCodepointsWithNoFonts.reset();

    nsresult rv = sFontconfigUtils->UpdateFontList();

    // initialize ranges of characters for which system-wide font search should be skipped
    mCodepointsWithNoFonts.SetRange(0,0x1f);     // C0 controls
    mCodepointsWithNoFonts.SetRange(0x7f,0x9f);  // C1 controls
    return rv;
}

nsresult
gfxOS2Platform::ResolveFontName(const nsAString& aFontName,
                                FontResolverCallback aCallback,
                                void *aClosure, PRBool& aAborted)
{
#ifdef DEBUG_thebes
    char *fontname = ToNewCString(aFontName);
    printf("gfxOS2Platform::ResolveFontName(%s, ...)\n", fontname);
    free(fontname);
#endif
    return sFontconfigUtils->ResolveFontName(aFontName, aCallback, aClosure,
                                             aAborted);
}

nsresult
gfxOS2Platform::GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName)
{
    return sFontconfigUtils->GetStandardFamilyName(aFontName, aFamilyName);
}

gfxFontGroup *
gfxOS2Platform::CreateFontGroup(const nsAString &aFamilies,
                const gfxFontStyle *aStyle,
                gfxUserFontSet *aUserFontSet)
{
    return new gfxOS2FontGroup(aFamilies, aStyle, aUserFontSet);
}

already_AddRefed<gfxOS2Font>
gfxOS2Platform::FindFontForChar(PRUint32 aCh, gfxOS2Font *aFont)
{
#ifdef DEBUG_thebes
    printf("gfxOS2Platform::FindFontForChar(%d, ...)\n", aCh);
#endif

    // is codepoint with no matching font? return null immediately
    if (mCodepointsWithNoFonts.test(aCh)) {
        return nsnull;
    }

    // the following is not very clever but it's a quick fix to search all fonts
    // (one should instead cache the charmaps as done on Mac and Win)

    // just continue to append all fonts known to the system
    nsTArray<nsString> fontList;
    nsCAutoString generic;
    nsresult rv = GetFontList(aFont->GetStyle()->language, generic, fontList);
    if (NS_SUCCEEDED(rv)) {
        // start at 3 to skip over the generic entries
        for (PRUint32 i = 3; i < fontList.Length(); i++) {
#ifdef DEBUG_thebes
            printf("searching in entry i=%d (%s)\n",
                   i, NS_LossyConvertUTF16toASCII(fontList[i]).get());
#endif
            nsRefPtr<gfxOS2Font> font =
                gfxOS2Font::GetOrMakeFont(fontList[i], aFont->GetStyle());
            if (!font)
                continue;
            FT_Face face = cairo_ft_scaled_font_lock_face(font->CairoScaledFont());
            if (!face || !face->charmap) {
                if (face)
                    cairo_ft_scaled_font_unlock_face(font->CairoScaledFont());
                continue;
            }

            FT_UInt gid = FT_Get_Char_Index(face, aCh); // find the glyph id
            if (gid != 0) {
                // this is the font
                cairo_ft_scaled_font_unlock_face(font->CairoScaledFont());
                return font.forget();
            }
        }
    }

    // no match found, so add to the set of non-matching codepoints
    mCodepointsWithNoFonts.set(aCh);
    return nsnull;
}