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Side by Side Diff: Source/core/svg/SVGLengthContext.cpp

Issue 1033943002: Rename LayoutStyle to papayawhip (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: ensureComputedStyle Created 5 years, 8 months ago
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1 /* 1 /*
2 * Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org> 2 * Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org> 3 * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
4 * Copyright (C) 2007 Apple Inc. All rights reserved. 4 * Copyright (C) 2007 Apple Inc. All rights reserved.
5 * Copyright (C) Research In Motion Limited 2011. All rights reserved. 5 * Copyright (C) Research In Motion Limited 2011. All rights reserved.
6 * 6 *
7 * This library is free software; you can redistribute it and/or 7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public 8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either 9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version. 10 * version 2 of the License, or (at your option) any later version.
11 * 11 *
12 * This library is distributed in the hope that it will be useful, 12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details. 15 * Library General Public License for more details.
16 * 16 *
17 * You should have received a copy of the GNU Library General Public License 17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to 18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA. 20 * Boston, MA 02110-1301, USA.
21 */ 21 */
22 22
23 #include "config.h" 23 #include "config.h"
24 #include "core/svg/SVGLengthContext.h" 24 #include "core/svg/SVGLengthContext.h"
25 25
26 #include "core/css/CSSHelper.h" 26 #include "core/css/CSSHelper.h"
27 #include "core/css/CSSPrimitiveValue.h" 27 #include "core/css/CSSPrimitiveValue.h"
28 #include "core/layout/LayoutObject.h" 28 #include "core/layout/LayoutObject.h"
29 #include "core/layout/style/LayoutStyle.h" 29 #include "core/layout/style/ComputedStyle.h"
30 #include "core/svg/SVGSVGElement.h" 30 #include "core/svg/SVGSVGElement.h"
31 #include "platform/LengthFunctions.h" 31 #include "platform/LengthFunctions.h"
32 #include "platform/fonts/FontMetrics.h" 32 #include "platform/fonts/FontMetrics.h"
33 33
34 namespace blink { 34 namespace blink {
35 35
36 static inline float dimensionForLengthMode(SVGLengthMode mode, const FloatSize& viewportSize) 36 static inline float dimensionForLengthMode(SVGLengthMode mode, const FloatSize& viewportSize)
37 { 37 {
38 switch (mode) { 38 switch (mode) {
39 case SVGLengthMode::Width: 39 case SVGLengthMode::Width:
(...skipping 55 matching lines...) Expand 10 before | Expand all | Expand 10 after
95 95
96 // FIXME: valueAsPercentage() won't be correct for eg. cm units. They need t o be resolved in user space and then be considered in objectBoundingBox space. 96 // FIXME: valueAsPercentage() won't be correct for eg. cm units. They need t o be resolved in user space and then be considered in objectBoundingBox space.
97 return x.valueAsPercentage(); 97 return x.valueAsPercentage();
98 } 98 }
99 99
100 float SVGLengthContext::valueForLength(const UnzoomedLength& unzoomedLength, SVG LengthMode mode) const 100 float SVGLengthContext::valueForLength(const UnzoomedLength& unzoomedLength, SVG LengthMode mode) const
101 { 101 {
102 return valueForLength(unzoomedLength.length(), 1, mode); 102 return valueForLength(unzoomedLength.length(), 1, mode);
103 } 103 }
104 104
105 float SVGLengthContext::valueForLength(const Length& length, const LayoutStyle& style, SVGLengthMode mode) const 105 float SVGLengthContext::valueForLength(const Length& length, const ComputedStyle & style, SVGLengthMode mode) const
106 { 106 {
107 return valueForLength(length, style.effectiveZoom(), mode); 107 return valueForLength(length, style.effectiveZoom(), mode);
108 } 108 }
109 109
110 float SVGLengthContext::valueForLength(const Length& length, float zoom, SVGLeng thMode mode) const 110 float SVGLengthContext::valueForLength(const Length& length, float zoom, SVGLeng thMode mode) const
111 { 111 {
112 float dimension = 0; 112 float dimension = 0;
113 if (length.isPercent()) { 113 if (length.isPercent()) {
114 FloatSize viewportSize; 114 FloatSize viewportSize;
115 determineViewport(viewportSize); 115 determineViewport(viewportSize);
116 // The viewport will be unaffected by zoom. 116 // The viewport will be unaffected by zoom.
117 dimension = dimensionForLengthMode(mode, viewportSize); 117 dimension = dimensionForLengthMode(mode, viewportSize);
118 } 118 }
119 return valueForLength(length, zoom, dimension); 119 return valueForLength(length, zoom, dimension);
120 } 120 }
121 121
122 float SVGLengthContext::valueForLength(const Length& length, const LayoutStyle& style, float dimension) 122 float SVGLengthContext::valueForLength(const Length& length, const ComputedStyle & style, float dimension)
123 { 123 {
124 return valueForLength(length, style.effectiveZoom(), dimension); 124 return valueForLength(length, style.effectiveZoom(), dimension);
125 } 125 }
126 126
127 float SVGLengthContext::valueForLength(const Length& length, float zoom, float d imension) 127 float SVGLengthContext::valueForLength(const Length& length, float zoom, float d imension)
128 { 128 {
129 ASSERT(zoom != 0); 129 ASSERT(zoom != 0);
130 return floatValueForLength(length, dimension * zoom) / zoom; 130 return floatValueForLength(length, dimension * zoom) / zoom;
131 } 131 }
132 132
(...skipping 76 matching lines...) Expand 10 before | Expand all | Expand 10 after
209 case LengthTypePT: 209 case LengthTypePT:
210 return value / cssPixelsPerPoint; 210 return value / cssPixelsPerPoint;
211 case LengthTypePC: 211 case LengthTypePC:
212 return value / cssPixelsPerPica; 212 return value / cssPixelsPerPica;
213 } 213 }
214 214
215 ASSERT_NOT_REACHED(); 215 ASSERT_NOT_REACHED();
216 return 0; 216 return 0;
217 } 217 }
218 218
219 static inline const LayoutStyle* layoutStyleForLengthResolving(const SVGElement* context) 219 static inline const ComputedStyle* computedStyleForLengthResolving(const SVGElem ent* context)
220 { 220 {
221 if (!context) 221 if (!context)
222 return 0; 222 return 0;
223 223
224 const ContainerNode* currentContext = context; 224 const ContainerNode* currentContext = context;
225 do { 225 do {
226 if (currentContext->layoutObject()) 226 if (currentContext->layoutObject())
227 return currentContext->layoutObject()->style(); 227 return currentContext->layoutObject()->style();
228 currentContext = currentContext->parentNode(); 228 currentContext = currentContext->parentNode();
229 } while (currentContext); 229 } while (currentContext);
230 230
231 // There must be at least a LayoutSVGRoot renderer, carrying a style. 231 // There must be at least a LayoutSVGRoot renderer, carrying a style.
232 ASSERT_NOT_REACHED(); 232 ASSERT_NOT_REACHED();
233 return 0; 233 return 0;
234 } 234 }
235 235
236 float SVGLengthContext::convertValueFromUserUnitsToEMS(float value) const 236 float SVGLengthContext::convertValueFromUserUnitsToEMS(float value) const
237 { 237 {
238 const LayoutStyle* style = layoutStyleForLengthResolving(m_context); 238 const ComputedStyle* style = computedStyleForLengthResolving(m_context);
239 if (!style) 239 if (!style)
240 return 0; 240 return 0;
241 241
242 float fontSize = style->specifiedFontSize(); 242 float fontSize = style->specifiedFontSize();
243 if (!fontSize) 243 if (!fontSize)
244 return 0; 244 return 0;
245 245
246 return value / fontSize; 246 return value / fontSize;
247 } 247 }
248 248
249 float SVGLengthContext::convertValueFromEMSToUserUnits(float value) const 249 float SVGLengthContext::convertValueFromEMSToUserUnits(float value) const
250 { 250 {
251 const LayoutStyle* style = layoutStyleForLengthResolving(m_context); 251 const ComputedStyle* style = computedStyleForLengthResolving(m_context);
252 if (!style) 252 if (!style)
253 return 0; 253 return 0;
254 return value * style->specifiedFontSize(); 254 return value * style->specifiedFontSize();
255 } 255 }
256 256
257 float SVGLengthContext::convertValueFromUserUnitsToEXS(float value) const 257 float SVGLengthContext::convertValueFromUserUnitsToEXS(float value) const
258 { 258 {
259 const LayoutStyle* style = layoutStyleForLengthResolving(m_context); 259 const ComputedStyle* style = computedStyleForLengthResolving(m_context);
260 if (!style) 260 if (!style)
261 return 0; 261 return 0;
262 262
263 // Use of ceil allows a pixel match to the W3Cs expected output of coords-un its-03-b.svg 263 // Use of ceil allows a pixel match to the W3Cs expected output of coords-un its-03-b.svg
264 // if this causes problems in real world cases maybe it would be best to rem ove this 264 // if this causes problems in real world cases maybe it would be best to rem ove this
265 float xHeight = ceilf(style->fontMetrics().xHeight()); 265 float xHeight = ceilf(style->fontMetrics().xHeight());
266 if (!xHeight) 266 if (!xHeight)
267 return 0; 267 return 0;
268 268
269 return value / xHeight; 269 return value / xHeight;
270 } 270 }
271 271
272 float SVGLengthContext::convertValueFromEXSToUserUnits(float value) const 272 float SVGLengthContext::convertValueFromEXSToUserUnits(float value) const
273 { 273 {
274 const LayoutStyle* style = layoutStyleForLengthResolving(m_context); 274 const ComputedStyle* style = computedStyleForLengthResolving(m_context);
275 if (!style) 275 if (!style)
276 return 0; 276 return 0;
277 277
278 // Use of ceil allows a pixel match to the W3Cs expected output of coords-un its-03-b.svg 278 // Use of ceil allows a pixel match to the W3Cs expected output of coords-un its-03-b.svg
279 // if this causes problems in real world cases maybe it would be best to rem ove this 279 // if this causes problems in real world cases maybe it would be best to rem ove this
280 return value * ceilf(style->fontMetrics().xHeight()); 280 return value * ceilf(style->fontMetrics().xHeight());
281 } 281 }
282 282
283 bool SVGLengthContext::determineViewport(FloatSize& viewportSize) const 283 bool SVGLengthContext::determineViewport(FloatSize& viewportSize) const
284 { 284 {
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298 298
299 const SVGSVGElement& svg = toSVGSVGElement(*viewportElement); 299 const SVGSVGElement& svg = toSVGSVGElement(*viewportElement);
300 viewportSize = svg.currentViewBoxRect().size(); 300 viewportSize = svg.currentViewBoxRect().size();
301 if (viewportSize.isEmpty()) 301 if (viewportSize.isEmpty())
302 viewportSize = svg.currentViewportSize(); 302 viewportSize = svg.currentViewportSize();
303 303
304 return true; 304 return true;
305 } 305 }
306 306
307 } 307 }
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