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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. |
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25 | 25 |
26 #include "bindings/core/v8/ExceptionMessages.h" | 26 #include "bindings/core/v8/ExceptionMessages.h" |
27 #include "bindings/core/v8/ExceptionState.h" | 27 #include "bindings/core/v8/ExceptionState.h" |
28 #include "core/SVGNames.h" | 28 #include "core/SVGNames.h" |
29 #include "core/css/CSSHelper.h" | 29 #include "core/css/CSSHelper.h" |
30 #include "core/dom/ExceptionCode.h" | 30 #include "core/dom/ExceptionCode.h" |
31 #include "core/rendering/RenderView.h" | 31 #include "core/rendering/RenderView.h" |
32 #include "core/rendering/svg/RenderSVGRoot.h" | 32 #include "core/rendering/svg/RenderSVGRoot.h" |
33 #include "core/rendering/svg/RenderSVGViewportContainer.h" | 33 #include "core/rendering/svg/RenderSVGViewportContainer.h" |
34 #include "core/svg/SVGSVGElement.h" | 34 #include "core/svg/SVGSVGElement.h" |
| 35 #include "platform/LengthFunctions.h" |
35 #include "platform/fonts/FontMetrics.h" | 36 #include "platform/fonts/FontMetrics.h" |
36 | 37 |
37 namespace blink { | 38 namespace blink { |
38 | 39 |
| 40 static inline float dimensionForLengthMode(SVGLengthMode mode, const FloatSize&
viewportSize) |
| 41 { |
| 42 switch (mode) { |
| 43 case LengthModeWidth: |
| 44 return viewportSize.width(); |
| 45 case LengthModeHeight: |
| 46 return viewportSize.height(); |
| 47 case LengthModeOther: |
| 48 return sqrtf(viewportSize.diagonalLengthSquared() / 2); |
| 49 } |
| 50 ASSERT_NOT_REACHED(); |
| 51 return 0; |
| 52 } |
| 53 |
39 SVGLengthContext::SVGLengthContext(const SVGElement* context) | 54 SVGLengthContext::SVGLengthContext(const SVGElement* context) |
40 : m_context(context) | 55 : m_context(context) |
41 { | 56 { |
42 } | 57 } |
43 | 58 |
44 FloatRect SVGLengthContext::resolveRectangle(const SVGElement* context, SVGUnitT
ypes::SVGUnitType type, const FloatRect& viewport, PassRefPtrWillBeRawPtr<SVGLen
gth> passX, PassRefPtrWillBeRawPtr<SVGLength> passY, PassRefPtrWillBeRawPtr<SVGL
ength> passWidth, PassRefPtrWillBeRawPtr<SVGLength> passHeight) | 59 FloatRect SVGLengthContext::resolveRectangle(const SVGElement* context, SVGUnitT
ypes::SVGUnitType type, const FloatRect& viewport, PassRefPtrWillBeRawPtr<SVGLen
gth> passX, PassRefPtrWillBeRawPtr<SVGLength> passY, PassRefPtrWillBeRawPtr<SVGL
ength> passWidth, PassRefPtrWillBeRawPtr<SVGLength> passHeight) |
45 { | 60 { |
46 RefPtrWillBeRawPtr<SVGLength> x = passX; | 61 RefPtrWillBeRawPtr<SVGLength> x = passX; |
47 RefPtrWillBeRawPtr<SVGLength> y = passY; | 62 RefPtrWillBeRawPtr<SVGLength> y = passY; |
48 RefPtrWillBeRawPtr<SVGLength> width = passWidth; | 63 RefPtrWillBeRawPtr<SVGLength> width = passWidth; |
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84 ASSERT(type != SVGUnitTypes::SVG_UNIT_TYPE_UNKNOWN); | 99 ASSERT(type != SVGUnitTypes::SVG_UNIT_TYPE_UNKNOWN); |
85 if (type == SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE) { | 100 if (type == SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE) { |
86 SVGLengthContext lengthContext(context); | 101 SVGLengthContext lengthContext(context); |
87 return x->value(lengthContext); | 102 return x->value(lengthContext); |
88 } | 103 } |
89 | 104 |
90 // 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. | 105 // 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. |
91 return x->valueAsPercentage(); | 106 return x->valueAsPercentage(); |
92 } | 107 } |
93 | 108 |
| 109 float SVGLengthContext::valueForLength(const Length& length, SVGLengthMode mode) |
| 110 { |
| 111 if (length.isAuto()) |
| 112 return 0; |
| 113 |
| 114 FloatSize viewportSize; |
| 115 determineViewport(viewportSize); |
| 116 |
| 117 if (length.isPercent()) |
| 118 return convertValueFromPercentageToUserUnits(length.value(), mode, viewp
ortSize) / 100; |
| 119 |
| 120 return floatValueForLength(length, dimensionForLengthMode(mode, viewportSize
)); |
| 121 } |
| 122 |
94 float SVGLengthContext::convertValueToUserUnits(float value, SVGLengthMode mode,
SVGLengthType fromUnit, ExceptionState& exceptionState) const | 123 float SVGLengthContext::convertValueToUserUnits(float value, SVGLengthMode mode,
SVGLengthType fromUnit, ExceptionState& exceptionState) const |
95 { | 124 { |
96 switch (fromUnit) { | 125 switch (fromUnit) { |
97 case LengthTypeUnknown: | 126 case LengthTypeUnknown: |
98 exceptionState.throwDOMException(NotSupportedError, ExceptionMessages::a
rgumentNullOrIncorrectType(3, "SVGLengthType")); | 127 exceptionState.throwDOMException(NotSupportedError, ExceptionMessages::a
rgumentNullOrIncorrectType(3, "SVGLengthType")); |
99 return 0; | 128 return 0; |
100 case LengthTypeNumber: | 129 case LengthTypeNumber: |
101 return value; | 130 return value; |
102 case LengthTypePX: | 131 case LengthTypePX: |
103 return value; | 132 return value; |
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148 case LengthTypePT: | 177 case LengthTypePT: |
149 return value / cssPixelsPerPoint; | 178 return value / cssPixelsPerPoint; |
150 case LengthTypePC: | 179 case LengthTypePC: |
151 return value / cssPixelsPerPica; | 180 return value / cssPixelsPerPica; |
152 } | 181 } |
153 | 182 |
154 ASSERT_NOT_REACHED(); | 183 ASSERT_NOT_REACHED(); |
155 return 0; | 184 return 0; |
156 } | 185 } |
157 | 186 |
158 static inline float dimensionForLengthMode(SVGLengthMode mode, const FloatSize&
viewportSize) | |
159 { | |
160 switch (mode) { | |
161 case LengthModeWidth: | |
162 return viewportSize.width(); | |
163 case LengthModeHeight: | |
164 return viewportSize.height(); | |
165 case LengthModeOther: | |
166 return sqrtf(viewportSize.diagonalLengthSquared() / 2); | |
167 } | |
168 ASSERT_NOT_REACHED(); | |
169 return 0; | |
170 } | |
171 | |
172 float SVGLengthContext::convertValueFromUserUnitsToPercentage(float value, SVGLe
ngthMode mode, ExceptionState& exceptionState) const | 187 float SVGLengthContext::convertValueFromUserUnitsToPercentage(float value, SVGLe
ngthMode mode, ExceptionState& exceptionState) const |
173 { | 188 { |
174 FloatSize viewportSize; | 189 FloatSize viewportSize; |
175 if (!determineViewport(viewportSize)) { | 190 if (!determineViewport(viewportSize)) { |
176 exceptionState.throwDOMException(NotSupportedError, "The viewport could
not be determined."); | 191 exceptionState.throwDOMException(NotSupportedError, "The viewport could
not be determined."); |
177 return 0; | 192 return 0; |
178 } | 193 } |
179 | 194 |
180 return value / dimensionForLengthMode(mode, viewportSize) * 100; | 195 return value / dimensionForLengthMode(mode, viewportSize) * 100; |
181 } | 196 } |
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295 | 310 |
296 const SVGSVGElement& svg = toSVGSVGElement(*viewportElement); | 311 const SVGSVGElement& svg = toSVGSVGElement(*viewportElement); |
297 viewportSize = svg.currentViewBoxRect().size(); | 312 viewportSize = svg.currentViewBoxRect().size(); |
298 if (viewportSize.isEmpty()) | 313 if (viewportSize.isEmpty()) |
299 viewportSize = svg.currentViewportSize(); | 314 viewportSize = svg.currentViewportSize(); |
300 | 315 |
301 return true; | 316 return true; |
302 } | 317 } |
303 | 318 |
304 } | 319 } |
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