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| 1 /* | 1 /* |
| 2 * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved. | 2 * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved. |
| 3 * | 3 * |
| 4 * This library is free software; you can redistribute it and/or | 4 * This library is free software; you can redistribute it and/or |
| 5 * modify it under the terms of the GNU Library General Public | 5 * modify it under the terms of the GNU Library General Public |
| 6 * License as published by the Free Software Foundation; either | 6 * License as published by the Free Software Foundation; either |
| 7 * version 2 of the License, or (at your option) any later version. | 7 * version 2 of the License, or (at your option) any later version. |
| 8 * | 8 * |
| 9 * This library is distributed in the hope that it will be useful, | 9 * This library is distributed in the hope that it will be useful, |
| 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 * Library General Public License for more details. | 12 * Library General Public License for more details. |
| 13 * | 13 * |
| 14 * You should have received a copy of the GNU Library General Public License | 14 * You should have received a copy of the GNU Library General Public License |
| 15 * along with this library; see the file COPYING.LIB. If not, write to | 15 * along with this library; see the file COPYING.LIB. If not, write to |
| 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 17 * Boston, MA 02110-1301, USA. | 17 * Boston, MA 02110-1301, USA. |
| 18 */ | 18 */ |
| 19 | 19 |
| 20 #include "config.h" | 20 #include "config.h" |
| 21 #include "core/rendering/svg/RenderSVGResourceMasker.h" | 21 #include "core/layout/svg/LayoutSVGResourceMasker.h" |
| 22 | 22 |
| 23 #include "core/dom/ElementTraversal.h" | 23 #include "core/dom/ElementTraversal.h" |
| 24 #include "core/layout/svg/SVGLayoutSupport.h" | 24 #include "core/layout/svg/SVGLayoutSupport.h" |
| 25 #include "core/paint/SVGPaintContext.h" | 25 #include "core/paint/SVGPaintContext.h" |
| 26 #include "core/svg/SVGElement.h" | 26 #include "core/svg/SVGElement.h" |
| 27 #include "platform/graphics/GraphicsContextStateSaver.h" | 27 #include "platform/graphics/GraphicsContextStateSaver.h" |
| 28 #include "platform/transforms/AffineTransform.h" | 28 #include "platform/transforms/AffineTransform.h" |
| 29 #include "third_party/skia/include/core/SkPicture.h" | 29 #include "third_party/skia/include/core/SkPicture.h" |
| 30 | 30 |
| 31 namespace blink { | 31 namespace blink { |
| 32 | 32 |
| 33 RenderSVGResourceMasker::RenderSVGResourceMasker(SVGMaskElement* node) | 33 LayoutSVGResourceMasker::LayoutSVGResourceMasker(SVGMaskElement* node) |
| 34 : RenderSVGResourceContainer(node) | 34 : LayoutSVGResourceContainer(node) |
| 35 { | 35 { |
| 36 } | 36 } |
| 37 | 37 |
| 38 RenderSVGResourceMasker::~RenderSVGResourceMasker() | 38 LayoutSVGResourceMasker::~LayoutSVGResourceMasker() |
| 39 { | 39 { |
| 40 } | 40 } |
| 41 | 41 |
| 42 void RenderSVGResourceMasker::removeAllClientsFromCache(bool markForInvalidation
) | 42 void LayoutSVGResourceMasker::removeAllClientsFromCache(bool markForInvalidation
) |
| 43 { | 43 { |
| 44 m_maskContentPicture.clear(); | 44 m_maskContentPicture.clear(); |
| 45 m_maskContentBoundaries = FloatRect(); | 45 m_maskContentBoundaries = FloatRect(); |
| 46 markAllClientsForInvalidation(markForInvalidation ? LayoutAndBoundariesInval
idation : ParentOnlyInvalidation); | 46 markAllClientsForInvalidation(markForInvalidation ? LayoutAndBoundariesInval
idation : ParentOnlyInvalidation); |
| 47 } | 47 } |
| 48 | 48 |
| 49 void RenderSVGResourceMasker::removeClientFromCache(LayoutObject* client, bool m
arkForInvalidation) | 49 void LayoutSVGResourceMasker::removeClientFromCache(LayoutObject* client, bool m
arkForInvalidation) |
| 50 { | 50 { |
| 51 ASSERT(client); | 51 ASSERT(client); |
| 52 markClientForInvalidation(client, markForInvalidation ? BoundariesInvalidati
on : ParentOnlyInvalidation); | 52 markClientForInvalidation(client, markForInvalidation ? BoundariesInvalidati
on : ParentOnlyInvalidation); |
| 53 } | 53 } |
| 54 | 54 |
| 55 bool RenderSVGResourceMasker::prepareEffect(LayoutObject* object, GraphicsContex
t* context) | 55 bool LayoutSVGResourceMasker::prepareEffect(LayoutObject* object, GraphicsContex
t* context) |
| 56 { | 56 { |
| 57 ASSERT(object); | 57 ASSERT(object); |
| 58 ASSERT(context); | 58 ASSERT(context); |
| 59 ASSERT(style()); | 59 ASSERT(style()); |
| 60 ASSERT_WITH_SECURITY_IMPLICATION(!needsLayout()); | 60 ASSERT_WITH_SECURITY_IMPLICATION(!needsLayout()); |
| 61 | 61 |
| 62 clearInvalidationMask(); | 62 clearInvalidationMask(); |
| 63 | 63 |
| 64 FloatRect paintInvalidationRect = object->paintInvalidationRectInLocalCoordi
nates(); | 64 FloatRect paintInvalidationRect = object->paintInvalidationRectInLocalCoordi
nates(); |
| 65 if (paintInvalidationRect.isEmpty() || !element()->hasChildren()) | 65 if (paintInvalidationRect.isEmpty() || !element()->hasChildren()) |
| 66 return false; | 66 return false; |
| 67 | 67 |
| 68 // Content layer start. | 68 // Content layer start. |
| 69 context->beginTransparencyLayer(1, &paintInvalidationRect); | 69 context->beginTransparencyLayer(1, &paintInvalidationRect); |
| 70 | 70 |
| 71 return true; | 71 return true; |
| 72 } | 72 } |
| 73 | 73 |
| 74 void RenderSVGResourceMasker::finishEffect(LayoutObject* object, GraphicsContext
* context) | 74 void LayoutSVGResourceMasker::finishEffect(LayoutObject* object, GraphicsContext
* context) |
| 75 { | 75 { |
| 76 ASSERT(object); | 76 ASSERT(object); |
| 77 ASSERT(context); | 77 ASSERT(context); |
| 78 ASSERT(style()); | 78 ASSERT(style()); |
| 79 ASSERT_WITH_SECURITY_IMPLICATION(!needsLayout()); | 79 ASSERT_WITH_SECURITY_IMPLICATION(!needsLayout()); |
| 80 | 80 |
| 81 FloatRect paintInvalidationRect = object->paintInvalidationRectInLocalCoordi
nates(); | 81 FloatRect paintInvalidationRect = object->paintInvalidationRectInLocalCoordi
nates(); |
| 82 | 82 |
| 83 const SVGLayoutStyle& svgStyle = style()->svgStyle(); | 83 const SVGLayoutStyle& svgStyle = style()->svgStyle(); |
| 84 ColorFilter maskLayerFilter = svgStyle.maskType() == MT_LUMINANCE | 84 ColorFilter maskLayerFilter = svgStyle.maskType() == MT_LUMINANCE |
| (...skipping 10 matching lines...) Expand all Loading... |
| 95 | 95 |
| 96 drawMaskForRenderer(context, object->objectBoundingBox()); | 96 drawMaskForRenderer(context, object->objectBoundingBox()); |
| 97 } | 97 } |
| 98 | 98 |
| 99 // Transfer mask layer -> content layer (DstIn) | 99 // Transfer mask layer -> content layer (DstIn) |
| 100 context->endLayer(); | 100 context->endLayer(); |
| 101 // Transfer content layer -> backdrop (SrcOver) | 101 // Transfer content layer -> backdrop (SrcOver) |
| 102 context->endLayer(); | 102 context->endLayer(); |
| 103 } | 103 } |
| 104 | 104 |
| 105 void RenderSVGResourceMasker::drawMaskForRenderer(GraphicsContext* context, cons
t FloatRect& targetBoundingBox) | 105 void LayoutSVGResourceMasker::drawMaskForRenderer(GraphicsContext* context, cons
t FloatRect& targetBoundingBox) |
| 106 { | 106 { |
| 107 ASSERT(context); | 107 ASSERT(context); |
| 108 | 108 |
| 109 AffineTransform contentTransformation; | 109 AffineTransform contentTransformation; |
| 110 SVGUnitTypes::SVGUnitType contentUnits = toSVGMaskElement(element())->maskCo
ntentUnits()->currentValue()->enumValue(); | 110 SVGUnitTypes::SVGUnitType contentUnits = toSVGMaskElement(element())->maskCo
ntentUnits()->currentValue()->enumValue(); |
| 111 if (contentUnits == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) { | 111 if (contentUnits == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) { |
| 112 contentTransformation.translate(targetBoundingBox.x(), targetBoundingBox
.y()); | 112 contentTransformation.translate(targetBoundingBox.x(), targetBoundingBox
.y()); |
| 113 contentTransformation.scaleNonUniform(targetBoundingBox.width(), targetB
oundingBox.height()); | 113 contentTransformation.scaleNonUniform(targetBoundingBox.width(), targetB
oundingBox.height()); |
| 114 context->concatCTM(contentTransformation); | 114 context->concatCTM(contentTransformation); |
| 115 } | 115 } |
| 116 | 116 |
| 117 if (!m_maskContentPicture) { | 117 if (!m_maskContentPicture) { |
| 118 SubtreeContentTransformScope contentTransformScope(contentTransformation
); | 118 SubtreeContentTransformScope contentTransformScope(contentTransformation
); |
| 119 createPicture(context); | 119 createPicture(context); |
| 120 } | 120 } |
| 121 | 121 |
| 122 context->drawPicture(m_maskContentPicture.get()); | 122 context->drawPicture(m_maskContentPicture.get()); |
| 123 } | 123 } |
| 124 | 124 |
| 125 void RenderSVGResourceMasker::createPicture(GraphicsContext* context) | 125 void LayoutSVGResourceMasker::createPicture(GraphicsContext* context) |
| 126 { | 126 { |
| 127 ASSERT(context); | 127 ASSERT(context); |
| 128 | 128 |
| 129 // Using strokeBoundingBox (instead of paintInvalidationRectInLocalCoordinat
es) to avoid the intersection | 129 // Using strokeBoundingBox (instead of paintInvalidationRectInLocalCoordinat
es) to avoid the intersection |
| 130 // with local clips/mask, which may yield incorrect results when mixing obje
ctBoundingBox and | 130 // with local clips/mask, which may yield incorrect results when mixing obje
ctBoundingBox and |
| 131 // userSpaceOnUse units (http://crbug.com/294900). | 131 // userSpaceOnUse units (http://crbug.com/294900). |
| 132 FloatRect bounds = strokeBoundingBox(); | 132 FloatRect bounds = strokeBoundingBox(); |
| 133 context->beginRecording(bounds); | 133 context->beginRecording(bounds); |
| 134 for (SVGElement* childElement = Traversal<SVGElement>::firstChild(*element()
); childElement; childElement = Traversal<SVGElement>::nextSibling(*childElement
)) { | 134 for (SVGElement* childElement = Traversal<SVGElement>::firstChild(*element()
); childElement; childElement = Traversal<SVGElement>::nextSibling(*childElement
)) { |
| 135 LayoutObject* renderer = childElement->renderer(); | 135 LayoutObject* renderer = childElement->renderer(); |
| 136 if (!renderer) | 136 if (!renderer) |
| 137 continue; | 137 continue; |
| 138 const LayoutStyle* style = renderer->style(); | 138 const LayoutStyle* style = renderer->style(); |
| 139 if (!style || style->display() == NONE || style->visibility() != VISIBLE
) | 139 if (!style || style->display() == NONE || style->visibility() != VISIBLE
) |
| 140 continue; | 140 continue; |
| 141 | 141 |
| 142 SVGPaintContext::paintSubtree(context, renderer); | 142 SVGPaintContext::paintSubtree(context, renderer); |
| 143 } | 143 } |
| 144 m_maskContentPicture = context->endRecording(); | 144 m_maskContentPicture = context->endRecording(); |
| 145 } | 145 } |
| 146 | 146 |
| 147 void RenderSVGResourceMasker::calculateMaskContentPaintInvalidationRect() | 147 void LayoutSVGResourceMasker::calculateMaskContentPaintInvalidationRect() |
| 148 { | 148 { |
| 149 for (SVGElement* childElement = Traversal<SVGElement>::firstChild(*element()
); childElement; childElement = Traversal<SVGElement>::nextSibling(*childElement
)) { | 149 for (SVGElement* childElement = Traversal<SVGElement>::firstChild(*element()
); childElement; childElement = Traversal<SVGElement>::nextSibling(*childElement
)) { |
| 150 LayoutObject* renderer = childElement->renderer(); | 150 LayoutObject* renderer = childElement->renderer(); |
| 151 if (!renderer) | 151 if (!renderer) |
| 152 continue; | 152 continue; |
| 153 const LayoutStyle* style = renderer->style(); | 153 const LayoutStyle* style = renderer->style(); |
| 154 if (!style || style->display() == NONE || style->visibility() != VISIBLE
) | 154 if (!style || style->display() == NONE || style->visibility() != VISIBLE
) |
| 155 continue; | 155 continue; |
| 156 m_maskContentBoundaries.unite(renderer->localToParentTransform().mapRect
(renderer->paintInvalidationRectInLocalCoordinates())); | 156 m_maskContentBoundaries.unite(renderer->localToParentTransform().mapRect
(renderer->paintInvalidationRectInLocalCoordinates())); |
| 157 } | 157 } |
| 158 } | 158 } |
| 159 | 159 |
| 160 FloatRect RenderSVGResourceMasker::resourceBoundingBox(const LayoutObject* objec
t) | 160 FloatRect LayoutSVGResourceMasker::resourceBoundingBox(const LayoutObject* objec
t) |
| 161 { | 161 { |
| 162 SVGMaskElement* maskElement = toSVGMaskElement(element()); | 162 SVGMaskElement* maskElement = toSVGMaskElement(element()); |
| 163 ASSERT(maskElement); | 163 ASSERT(maskElement); |
| 164 | 164 |
| 165 FloatRect objectBoundingBox = object->objectBoundingBox(); | 165 FloatRect objectBoundingBox = object->objectBoundingBox(); |
| 166 FloatRect maskBoundaries = SVGLengthContext::resolveRectangle<SVGMaskElement
>(maskElement, maskElement->maskUnits()->currentValue()->enumValue(), objectBoun
dingBox); | 166 FloatRect maskBoundaries = SVGLengthContext::resolveRectangle<SVGMaskElement
>(maskElement, maskElement->maskUnits()->currentValue()->enumValue(), objectBoun
dingBox); |
| 167 | 167 |
| 168 // Resource was not layouted yet. Give back clipping rect of the mask. | 168 // Resource was not layouted yet. Give back clipping rect of the mask. |
| 169 if (selfNeedsLayout()) | 169 if (selfNeedsLayout()) |
| 170 return maskBoundaries; | 170 return maskBoundaries; |
| 171 | 171 |
| 172 if (m_maskContentBoundaries.isEmpty()) | 172 if (m_maskContentBoundaries.isEmpty()) |
| 173 calculateMaskContentPaintInvalidationRect(); | 173 calculateMaskContentPaintInvalidationRect(); |
| 174 | 174 |
| 175 FloatRect maskRect = m_maskContentBoundaries; | 175 FloatRect maskRect = m_maskContentBoundaries; |
| 176 if (maskElement->maskContentUnits()->currentValue()->value() == SVGUnitTypes
::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) { | 176 if (maskElement->maskContentUnits()->currentValue()->value() == SVGUnitTypes
::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) { |
| 177 AffineTransform transform; | 177 AffineTransform transform; |
| 178 transform.translate(objectBoundingBox.x(), objectBoundingBox.y()); | 178 transform.translate(objectBoundingBox.x(), objectBoundingBox.y()); |
| 179 transform.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.h
eight()); | 179 transform.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.h
eight()); |
| 180 maskRect = transform.mapRect(maskRect); | 180 maskRect = transform.mapRect(maskRect); |
| 181 } | 181 } |
| 182 | 182 |
| 183 maskRect.intersect(maskBoundaries); | 183 maskRect.intersect(maskBoundaries); |
| 184 return maskRect; | 184 return maskRect; |
| 185 } | 185 } |
| 186 | 186 |
| 187 } | 187 } |
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