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| 1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 /* | |
| 6 * Copyright (C) 2006, 2007 Apple Inc. All rights reserved. | |
| 7 * | |
| 8 * Redistribution and use in source and binary forms, with or without | |
| 9 * modification, are permitted provided that the following conditions | |
| 10 * are met: | |
| 11 * 1. Redistributions of source code must retain the above copyright | |
| 12 * notice, this list of conditions and the following disclaimer. | |
| 13 * 2. Redistributions in binary form must reproduce the above copyright | |
| 14 * notice, this list of conditions and the following disclaimer in the | |
| 15 * documentation and/or other materials provided with the distribution. | |
| 16 * | |
| 17 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
| 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 21 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 22 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 24 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 25 * 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 UniscribeStateTextRun_H | |
| 31 #define UniscribeStateTextRun_H | |
| 32 | |
| 33 #include "base/gfx/uniscribe.h" | |
| 34 | |
| 35 namespace WebCore { | |
| 36 | |
| 37 class Font; | |
| 38 class TextRun; | |
| 39 | |
| 40 } | |
| 41 | |
| 42 // Wrapper around the Uniscribe state that automatically sets it up with the | |
| 43 // WebKit types we supply. | |
| 44 class UniscribeStateTextRun : public gfx::UniscribeState { | |
| 45 public: | |
| 46 // Regular constructor used for WebCore text run processing. | |
| 47 UniscribeStateTextRun(const WebCore::TextRun& run, | |
| 48 const WebCore::Font& font); | |
| 49 | |
| 50 // Constructor with the same interface as the gfx::UniscribeState. Using | |
| 51 // this constructor will not give you font fallback, but it will provide | |
| 52 // the ability to load fonts that may not be in the OS cache | |
| 53 // ("TryToPreloadFont") if the caller does not have a TextRun/Font. | |
| 54 UniscribeStateTextRun(const wchar_t* input, | |
| 55 int input_length, | |
| 56 bool is_rtl, | |
| 57 HFONT hfont, | |
| 58 SCRIPT_CACHE* script_cache, | |
| 59 SCRIPT_FONTPROPERTIES* font_properties); | |
| 60 | |
| 61 protected: | |
| 62 virtual void TryToPreloadFont(HFONT font); | |
| 63 | |
| 64 private: | |
| 65 // This function retrieves the Windows font data (HFONT, etc) | |
| 66 // for the next WebKit font in the list. If the font data | |
| 67 // corresponding to font_index_ has been obtained before, | |
| 68 // returns the values stored in our internal vectors (hfonts_, etc). | |
| 69 // Otherwise, it gets next SimpleFontData from WebKit and adds them to | |
| 70 // in hfonts_ and friends so that font data can be returned | |
| 71 // quickly next time they're requested. | |
| 72 virtual bool NextWinFontData(HFONT* hfont, | |
| 73 SCRIPT_CACHE** script_cache, | |
| 74 SCRIPT_FONTPROPERTIES** font_properties, | |
| 75 int* ascent); | |
| 76 virtual void ResetFontIndex(); | |
| 77 | |
| 78 // Reference to WebKit::Font that contains all the information | |
| 79 // about fonts we can use to render this input run of text. | |
| 80 // It is used in NextWinFontData to retrieve Windows font data | |
| 81 // for a series of non-primary fonts. | |
| 82 // | |
| 83 // This pointer can be NULL for no font fallback handling. | |
| 84 const WebCore::Font* font_; | |
| 85 | |
| 86 // It's rare that many fonts are listed in stylesheets. | |
| 87 // Four would be large enough in most cases. | |
| 88 const static size_t kNumberOfFonts = 4; | |
| 89 | |
| 90 // These vectors are used to store Windows font data for | |
| 91 // non-primary fonts. | |
| 92 StackVector<HFONT, kNumberOfFonts> hfonts_; | |
| 93 StackVector<SCRIPT_CACHE*, kNumberOfFonts> script_caches_; | |
| 94 StackVector<SCRIPT_FONTPROPERTIES*, kNumberOfFonts> font_properties_; | |
| 95 StackVector<int, kNumberOfFonts> ascents_; | |
| 96 | |
| 97 // | |
| 98 int font_index_; | |
| 99 }; | |
| 100 | |
| 101 #endif // UniscribeStateTextRun_H | |
| 102 | |
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Chromium Code Reviews
Issue 10785:
Debase our Uniscribe code. This moves FontUtils and all our Uniscribe code fr... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/