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Side by Side Diff: Source/platform/fonts/FontFallbackList.cpp

Issue 99103006: Moving GraphicsContext and dependencies from core to platform. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Final patch - fixes Android Created 7 years ago
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1 /* 1 /*
2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 7 *
8 * 1. Redistributions of source code must retain the above copyright 8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer. 9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright 10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the 11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution. 12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived 14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission. 15 * from this software without specific prior written permission.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */ 27 */
28 28
29 #include "config.h" 29 #include "config.h"
30 #include "core/platform/graphics/FontFallbackList.h" 30 #include "platform/fonts/FontFallbackList.h"
31 31
32 #include "FontFamilyNames.h" 32 #include "FontFamilyNames.h"
33 #include "core/platform/graphics/FontCache.h" 33 #include "platform/fonts/FontCache.h"
34 #include "core/platform/graphics/SegmentedFontData.h"
35 #include "platform/fonts/FontDescription.h" 34 #include "platform/fonts/FontDescription.h"
36 #include "platform/fonts/FontFamily.h" 35 #include "platform/fonts/FontFamily.h"
36 #include "platform/fonts/SegmentedFontData.h"
37 37
38 namespace WebCore { 38 namespace WebCore {
39 39
40 FontFallbackList::FontFallbackList() 40 FontFallbackList::FontFallbackList()
41 : m_pageZero(0) 41 : m_pageZero(0)
42 , m_cachedPrimarySimpleFontData(0) 42 , m_cachedPrimarySimpleFontData(0)
43 , m_fontSelector(0) 43 , m_fontSelector(0)
44 , m_fontSelectorVersion(0) 44 , m_fontSelectorVersion(0)
45 , m_familyIndex(0) 45 , m_familyIndex(0)
46 , m_generation(fontCache()->generation()) 46 , m_generation(FontCache::fontCache()->generation())
47 , m_pitch(UnknownPitch) 47 , m_pitch(UnknownPitch)
48 , m_loadingCustomFonts(false) 48 , m_loadingCustomFonts(false)
49 { 49 {
50 } 50 }
51 51
52 void FontFallbackList::invalidate(PassRefPtr<FontSelector> fontSelector) 52 void FontFallbackList::invalidate(PassRefPtr<FontSelector> fontSelector)
53 { 53 {
54 releaseFontData(); 54 releaseFontData();
55 m_fontList.clear(); 55 m_fontList.clear();
56 m_pageZero = 0; 56 m_pageZero = 0;
57 m_pages.clear(); 57 m_pages.clear();
58 m_cachedPrimarySimpleFontData = 0; 58 m_cachedPrimarySimpleFontData = 0;
59 m_familyIndex = 0; 59 m_familyIndex = 0;
60 m_pitch = UnknownPitch; 60 m_pitch = UnknownPitch;
61 m_loadingCustomFonts = false; 61 m_loadingCustomFonts = false;
62 m_fontSelector = fontSelector; 62 m_fontSelector = fontSelector;
63 m_fontSelectorVersion = m_fontSelector ? m_fontSelector->version() : 0; 63 m_fontSelectorVersion = m_fontSelector ? m_fontSelector->version() : 0;
64 m_generation = fontCache()->generation(); 64 m_generation = FontCache::fontCache()->generation();
65 m_widthCache.clear(); 65 m_widthCache.clear();
66 } 66 }
67 67
68 void FontFallbackList::releaseFontData() 68 void FontFallbackList::releaseFontData()
69 { 69 {
70 unsigned numFonts = m_fontList.size(); 70 unsigned numFonts = m_fontList.size();
71 for (unsigned i = 0; i < numFonts; ++i) { 71 for (unsigned i = 0; i < numFonts; ++i) {
72 if (!m_fontList[i]->isCustomFont()) { 72 if (!m_fontList[i]->isCustomFont()) {
73 ASSERT(!m_fontList[i]->isSegmented()); 73 ASSERT(!m_fontList[i]->isSegmented());
74 fontCache()->releaseFontData(static_cast<const SimpleFontData*>(m_fo ntList[i].get())); 74 FontCache::fontCache()->releaseFontData(static_cast<const SimpleFont Data*>(m_fontList[i].get()));
75 } 75 }
76 } 76 }
77 } 77 }
78 78
79 void FontFallbackList::determinePitch(const FontDescription& fontDescription) co nst 79 void FontFallbackList::determinePitch(const FontDescription& fontDescription) co nst
80 { 80 {
81 const FontData* fontData = primaryFontData(fontDescription); 81 const FontData* fontData = primaryFontData(fontDescription);
82 if (!fontData->isSegmented()) 82 if (!fontData->isSegmented())
83 m_pitch = static_cast<const SimpleFontData*>(fontData)->pitch(); 83 m_pitch = static_cast<const SimpleFontData*>(fontData)->pitch();
84 else { 84 else {
(...skipping 54 matching lines...) Expand 10 before | Expand all | Expand 10 after
139 for (int i = 0; startFamily && i < startIndex; i++) 139 for (int i = 0; startFamily && i < startIndex; i++)
140 startFamily = startFamily->next(); 140 startFamily = startFamily->next();
141 const FontFamily* currFamily = startFamily; 141 const FontFamily* currFamily = startFamily;
142 while (currFamily && !result) { 142 while (currFamily && !result) {
143 familyIndex++; 143 familyIndex++;
144 if (currFamily->family().length()) { 144 if (currFamily->family().length()) {
145 if (m_fontSelector) 145 if (m_fontSelector)
146 result = m_fontSelector->getFontData(fontDescription, currFamily ->family()); 146 result = m_fontSelector->getFontData(fontDescription, currFamily ->family());
147 147
148 if (!result) 148 if (!result)
149 result = fontCache()->getFontData(fontDescription, currFamily->f amily()); 149 result = FontCache::fontCache()->getFontData(fontDescription, cu rrFamily->family());
150 } 150 }
151 currFamily = currFamily->next(); 151 currFamily = currFamily->next();
152 } 152 }
153 153
154 if (!currFamily) 154 if (!currFamily)
155 familyIndex = cAllFamiliesScanned; 155 familyIndex = cAllFamiliesScanned;
156 156
157 if (result || startIndex) 157 if (result || startIndex)
158 return result.release(); 158 return result.release();
159 159
160 // If it's the primary font that we couldn't find, we try the following. In all other cases, we will 160 // If it's the primary font that we couldn't find, we try the following. In all other cases, we will
161 // just use per-character system fallback. 161 // just use per-character system fallback.
162 162
163 if (m_fontSelector) { 163 if (m_fontSelector) {
164 // Try the user's preferred standard font. 164 // Try the user's preferred standard font.
165 if (RefPtr<FontData> data = m_fontSelector->getFontData(fontDescription, FontFamilyNames::webkit_standard)) 165 if (RefPtr<FontData> data = m_fontSelector->getFontData(fontDescription, FontFamilyNames::webkit_standard))
166 return data.release(); 166 return data.release();
167 } 167 }
168 168
169 // Still no result. Hand back our last resort fallback font. 169 // Still no result. Hand back our last resort fallback font.
170 return fontCache()->getLastResortFallbackFont(fontDescription); 170 return FontCache::fontCache()->getLastResortFallbackFont(fontDescription);
171 } 171 }
172 172
173 173
174 const FontData* FontFallbackList::fontDataAt(const FontDescription& fontDescript ion, unsigned realizedFontIndex) const 174 const FontData* FontFallbackList::fontDataAt(const FontDescription& fontDescript ion, unsigned realizedFontIndex) const
175 { 175 {
176 if (realizedFontIndex < m_fontList.size()) 176 if (realizedFontIndex < m_fontList.size())
177 return m_fontList[realizedFontIndex].get(); // This fallback font is alr eady in our list. 177 return m_fontList[realizedFontIndex].get(); // This fallback font is alr eady in our list.
178 178
179 // Make sure we're not passing in some crazy value here. 179 // Make sure we're not passing in some crazy value here.
180 ASSERT(realizedFontIndex == m_fontList.size()); 180 ASSERT(realizedFontIndex == m_fontList.size());
181 181
182 if (m_familyIndex == cAllFamiliesScanned) 182 if (m_familyIndex == cAllFamiliesScanned)
183 return 0; 183 return 0;
184 184
185 // Ask the font cache for the font data. 185 // Ask the font cache for the font data.
186 // We are obtaining this font for the first time. We keep track of the fami lies we've looked at before 186 // We are obtaining this font for the first time. We keep track of the fami lies we've looked at before
187 // in |m_familyIndex|, so that we never scan the same spot in the list twice . getFontData will adjust our 187 // in |m_familyIndex|, so that we never scan the same spot in the list twice . getFontData will adjust our
188 // |m_familyIndex| as it scans for the right font to make. 188 // |m_familyIndex| as it scans for the right font to make.
189 ASSERT(fontCache()->generation() == m_generation); 189 ASSERT(FontCache::fontCache()->generation() == m_generation);
190 RefPtr<FontData> result = getFontData(fontDescription, m_familyIndex); 190 RefPtr<FontData> result = getFontData(fontDescription, m_familyIndex);
191 if (result) { 191 if (result) {
192 m_fontList.append(result); 192 m_fontList.append(result);
193 if (result->isLoading()) 193 if (result->isLoading())
194 m_loadingCustomFonts = true; 194 m_loadingCustomFonts = true;
195 } 195 }
196 return result.get(); 196 return result.get();
197 } 197 }
198 198
199 void FontFallbackList::setPlatformFont(const FontPlatformData& platformData) 199 void FontFallbackList::setPlatformFont(const FontPlatformData& platformData)
200 { 200 {
201 m_familyIndex = cAllFamiliesScanned; 201 m_familyIndex = cAllFamiliesScanned;
202 ASSERT(fontCache()->generation() == m_generation); 202 RefPtr<FontData> fontData = FontCache::fontCache()->fontDataFromFontPlatform Data(&platformData);
203 RefPtr<FontData> fontData = fontCache()->fontDataFromFontPlatformData(&platf ormData);
204 m_fontList.append(fontData); 203 m_fontList.append(fontData);
205 } 204 }
206 205
207 } 206 }
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