1 /* Copyright (c) 2010, Google Inc. All rights reserved. 2 * 3 * Redistribution and use in source and binary forms, with or without 4 * modification, are permitted provided that the following conditions are 5 * met: 6 * 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above 10 * copyright notice, this list of conditions and the following disclaimer 11 * in the documentation and/or other materials provided with the 12 * distribution. 13 * * Neither the name of Google Inc. nor the names of its 14 * contributors may be used to endorse or promote products derived from 15 * this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifndef FontRenderStyle_h 31 #define FontRenderStyle_h 32 33 namespace blink { 34 35 // FontRenderStyle describes the user's preferences for rendering a font at a 36 // given size. 37 struct FontRenderStyle { 38 enum { 39 NoPreference = 2, 40 }; 41 42 FontRenderStyle() 43 : useBitmaps(0) 44 , useAutoHint(0) 45 , useHinting(0) 46 , hintStyle(0) 47 , useAntiAlias(0) 48 , useSubpixelRendering(0) 49 , useSubpixelPositioning(0) { } 50 51 bool operator==(const FontRenderStyle& a) const 52 { 53 return useBitmaps == a.useBitmaps 54 && useAutoHint == a.useAutoHint 55 && useHinting == a.useHinting 56 && hintStyle == a.hintStyle 57 && useAntiAlias == a.useAntiAlias 58 && useSubpixelRendering == a.useSubpixelRendering 59 && useSubpixelPositioning == a.useSubpixelPositioning; 60 } 61 62 // Each of the use* members below can take one of three values: 63 // 0: off 64 // 1: on 65 // NoPreference: no preference expressed 66 char useBitmaps; // use embedded bitmap strike if possible 67 char useAutoHint; // use 'auto' hinting (FreeType specific) 68 char useHinting; // hint glyphs to the pixel grid 69 char hintStyle; // level of hinting, 0..3 70 char useAntiAlias; // antialias glyph shapes 71 char useSubpixelRendering; // use subpixel rendering (partially-filled pixels) 72 char useSubpixelPositioning; // use subpixel positioning (fractional X positions for glyphs) 73 }; 74 75 } // namespace blink 76 77 #endif // FontRenderStyle_h 78
