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| 1 /* | 1 /* |
| 2 * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org> | 2 * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org> |
| 3 * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org> | 3 * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org> |
| 4 * Copyright (C) 2014 Google, Inc. | 4 * Copyright (C) 2014 Google, Inc. |
| 5 * | 5 * |
| 6 * This library is free software; you can redistribute it and/or | 6 * This library is free software; you can redistribute it and/or |
| 7 * modify it under the terms of the GNU Library General Public | 7 * modify it under the terms of the GNU Library General Public |
| 8 * License as published by the Free Software Foundation; either | 8 * License as published by the Free Software Foundation; either |
| 9 * version 2 of the License, or (at your option) any later version. | 9 * version 2 of the License, or (at your option) any later version. |
| 10 * | 10 * |
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| 107 } | 107 } |
| 108 | 108 |
| 109 SVGMatrixTearOff* SVGGraphicsElement::getScreenCTMFromJavascript() { | 109 SVGMatrixTearOff* SVGGraphicsElement::getScreenCTMFromJavascript() { |
| 110 return SVGMatrixTearOff::create(getScreenCTM()); | 110 return SVGMatrixTearOff::create(getScreenCTM()); |
| 111 } | 111 } |
| 112 | 112 |
| 113 bool SVGGraphicsElement::hasAnimatedLocalTransform() const { | 113 bool SVGGraphicsElement::hasAnimatedLocalTransform() const { |
| 114 const ComputedStyle* style = | 114 const ComputedStyle* style = |
| 115 layoutObject() ? layoutObject()->style() : nullptr; | 115 layoutObject() ? layoutObject()->style() : nullptr; |
| 116 | 116 |
| 117 // Each of these is used in SVGGraphicsElement::calculateAnimatedLocalTransfor
m to create an animated local transform. | 117 // Each of these is used in |
| 118 // SVGGraphicsElement::calculateAnimatedLocalTransform to create an animated |
| 119 // local transform. |
| 118 return (style && style->hasTransform()) || | 120 return (style && style->hasTransform()) || |
| 119 !m_transform->currentValue()->isEmpty() || hasSVGRareData(); | 121 !m_transform->currentValue()->isEmpty() || hasSVGRareData(); |
| 120 } | 122 } |
| 121 | 123 |
| 122 AffineTransform SVGGraphicsElement::calculateAnimatedLocalTransform() const { | 124 AffineTransform SVGGraphicsElement::calculateAnimatedLocalTransform() const { |
| 123 AffineTransform matrix; | 125 AffineTransform matrix; |
| 124 const ComputedStyle* style = | 126 const ComputedStyle* style = |
| 125 layoutObject() ? layoutObject()->style() : nullptr; | 127 layoutObject() ? layoutObject()->style() : nullptr; |
| 126 | 128 |
| 127 // If CSS property was set, use that, otherwise fallback to attribute (if set)
. | 129 // If CSS property was set, use that, otherwise fallback to attribute (if |
| 130 // set). |
| 128 if (style && style->hasTransform()) { | 131 if (style && style->hasTransform()) { |
| 129 TransformationMatrix transform; | 132 TransformationMatrix transform; |
| 130 float zoom = style->effectiveZoom(); | 133 float zoom = style->effectiveZoom(); |
| 131 | 134 |
| 132 // SVGTextElements need special handling for the text positioning code. | 135 // SVGTextElements need special handling for the text positioning code. |
| 133 if (isSVGTextElement(this)) { | 136 if (isSVGTextElement(this)) { |
| 134 // Do not take into account SVG's zoom rules, transform-origin, or percent
age values. | 137 // Do not take into account SVG's zoom rules, transform-origin, or |
| 138 // percentage values. |
| 135 style->applyTransform( | 139 style->applyTransform( |
| 136 transform, LayoutSize(0, 0), ComputedStyle::ExcludeTransformOrigin, | 140 transform, LayoutSize(0, 0), ComputedStyle::ExcludeTransformOrigin, |
| 137 ComputedStyle::IncludeMotionPath, | 141 ComputedStyle::IncludeMotionPath, |
| 138 ComputedStyle::IncludeIndependentTransformProperties); | 142 ComputedStyle::IncludeIndependentTransformProperties); |
| 139 } else { | 143 } else { |
| 140 // CSS transforms operate with pre-scaled lengths. To make this work with
SVG | 144 // CSS transforms operate with pre-scaled lengths. To make this work with |
| 141 // (which applies the zoom factor globally, at the root level) we | 145 // SVG (which applies the zoom factor globally, at the root level) we |
| 142 // | 146 // |
| 143 // * pre-scale the bounding box (to bring it into the same space as the
other CSS values) | 147 // * pre-scale the bounding box (to bring it into the same space as the |
| 144 // * invert the zoom factor (to effectively compute the CSS transform un
der a 1.0 zoom) | 148 // other CSS values) |
| 149 // * invert the zoom factor (to effectively compute the CSS transform |
| 150 // under a 1.0 zoom) |
| 145 // | 151 // |
| 146 // Note: objectBoundingBox is an emptyRect for elements like pattern or cl
ipPath. | 152 // Note: objectBoundingBox is an emptyRect for elements like pattern or |
| 147 // See the "Object bounding box units" section of http://dev.w3.org/csswg/
css3-transforms/ | 153 // clipPath. See the "Object bounding box units" section of |
| 154 // http://dev.w3.org/csswg/css3-transforms/ |
| 148 if (zoom != 1) { | 155 if (zoom != 1) { |
| 149 FloatRect scaledBBox = layoutObject()->objectBoundingBox(); | 156 FloatRect scaledBBox = layoutObject()->objectBoundingBox(); |
| 150 scaledBBox.scale(zoom); | 157 scaledBBox.scale(zoom); |
| 151 transform.scale(1 / zoom); | 158 transform.scale(1 / zoom); |
| 152 style->applyTransform( | 159 style->applyTransform( |
| 153 transform, scaledBBox, ComputedStyle::IncludeTransformOrigin, | 160 transform, scaledBBox, ComputedStyle::IncludeTransformOrigin, |
| 154 ComputedStyle::IncludeMotionPath, | 161 ComputedStyle::IncludeMotionPath, |
| 155 ComputedStyle::IncludeIndependentTransformProperties); | 162 ComputedStyle::IncludeIndependentTransformProperties); |
| 156 transform.scale(zoom); | 163 transform.scale(zoom); |
| 157 } else { | 164 } else { |
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| 172 if (hasSVGRareData()) | 179 if (hasSVGRareData()) |
| 173 return *svgRareData()->animateMotionTransform() * matrix; | 180 return *svgRareData()->animateMotionTransform() * matrix; |
| 174 return matrix; | 181 return matrix; |
| 175 } | 182 } |
| 176 | 183 |
| 177 AffineTransform* SVGGraphicsElement::animateMotionTransform() { | 184 AffineTransform* SVGGraphicsElement::animateMotionTransform() { |
| 178 return ensureSVGRareData()->animateMotionTransform(); | 185 return ensureSVGRareData()->animateMotionTransform(); |
| 179 } | 186 } |
| 180 | 187 |
| 181 void SVGGraphicsElement::svgAttributeChanged(const QualifiedName& attrName) { | 188 void SVGGraphicsElement::svgAttributeChanged(const QualifiedName& attrName) { |
| 182 // Reattach so the isValid() check will be run again during layoutObject creat
ion. | 189 // Reattach so the isValid() check will be run again during layoutObject |
| 190 // creation. |
| 183 if (SVGTests::isKnownAttribute(attrName)) { | 191 if (SVGTests::isKnownAttribute(attrName)) { |
| 184 SVGElement::InvalidationGuard invalidationGuard(this); | 192 SVGElement::InvalidationGuard invalidationGuard(this); |
| 185 lazyReattachIfAttached(); | 193 lazyReattachIfAttached(); |
| 186 return; | 194 return; |
| 187 } | 195 } |
| 188 | 196 |
| 189 if (attrName == SVGNames::transformAttr) { | 197 if (attrName == SVGNames::transformAttr) { |
| 190 LayoutObject* object = layoutObject(); | 198 LayoutObject* object = layoutObject(); |
| 191 if (!object) | 199 if (!object) |
| 192 return; | 200 return; |
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| 229 | 237 |
| 230 return layoutObject()->objectBoundingBox(); | 238 return layoutObject()->objectBoundingBox(); |
| 231 } | 239 } |
| 232 | 240 |
| 233 SVGRectTearOff* SVGGraphicsElement::getBBoxFromJavascript() { | 241 SVGRectTearOff* SVGGraphicsElement::getBBoxFromJavascript() { |
| 234 return SVGRectTearOff::create(SVGRect::create(getBBox()), 0, | 242 return SVGRectTearOff::create(SVGRect::create(getBBox()), 0, |
| 235 PropertyIsNotAnimVal); | 243 PropertyIsNotAnimVal); |
| 236 } | 244 } |
| 237 | 245 |
| 238 } // namespace blink | 246 } // namespace blink |
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