xref: /external/webkit/Source/WebCore/platform/graphics/chromium/FontRenderStyle.h

/* Copyright (c) 2010, Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef FontRenderStyle_h
#define FontRenderStyle_h

namespace WebCore {

// FontRenderStyle describes the user's preferences for rendering a font at a
// given size.
struct FontRenderStyle {
    enum {
        NoPreference = 2,
    };

    FontRenderStyle()
        : useBitmaps(0),
          useAutoHint(0),
          useHinting(0),
          hintStyle(0),
          useAntiAlias(0),
          useSubpixel(0) { }

    bool operator==(const FontRenderStyle& a) const
    {
        return useBitmaps == a.useBitmaps
            && useAutoHint == a.useAutoHint
            && useHinting == a.useHinting
            && hintStyle == a.hintStyle
            && useAntiAlias == a.useAntiAlias
            && useSubpixel == a.useSubpixel;
    }

    // Each of the use* members below can take one of three values:
    //   0: off
    //   1: on
    //   NoPreference: no preference expressed
    char useBitmaps; // use embedded bitmap strike if possible
    char useAutoHint; // use 'auto' hinting (FreeType specific)
    char useHinting; // hint glyphs to the pixel grid
    char hintStyle; // level of hinting, 0..3
    char useAntiAlias; // antialias glyph shapes
    char useSubpixel; // use subpixel antialias
};

}

#endif // FontRenderStyle_h