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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "config.h" |
| 6 #include "core/paint/SVGMaskPainter.h" |
| 7 |
| 8 #include "core/layout/PaintInfo.h" |
| 9 #include "core/layout/svg/LayoutSVGResourceMasker.h" |
| 10 #include "core/paint/CompositingRecorder.h" |
| 11 #include "core/paint/TransformRecorder.h" |
| 12 #include "platform/graphics/paint/CompositingDisplayItem.h" |
| 13 #include "platform/graphics/paint/DisplayItemList.h" |
| 14 #include "platform/graphics/paint/DrawingDisplayItem.h" |
| 15 |
| 16 namespace blink { |
| 17 |
| 18 bool SVGMaskPainter::prepareEffect(LayoutObject* object, GraphicsContext* contex
t) |
| 19 { |
| 20 ASSERT(object); |
| 21 ASSERT(context); |
| 22 ASSERT(m_mask.style()); |
| 23 ASSERT_WITH_SECURITY_IMPLICATION(!m_mask.needsLayout()); |
| 24 |
| 25 m_mask.clearInvalidationMask(); |
| 26 |
| 27 FloatRect paintInvalidationRect = object->paintInvalidationRectInLocalCoordi
nates(); |
| 28 if (paintInvalidationRect.isEmpty() || !m_mask.element()->hasChildren()) |
| 29 return false; |
| 30 |
| 31 if (RuntimeEnabledFeatures::slimmingPaintEnabled()) { |
| 32 ASSERT(context->displayItemList()); |
| 33 context->displayItemList()->add(BeginCompositingDisplayItem::create(obje
ct->displayItemClient(), WebCoreCompositeToSkiaComposite(context->compositeOpera
tionDeprecated(), WebBlendModeNormal), 1, &paintInvalidationRect)); |
| 34 } else { |
| 35 BeginCompositingDisplayItem beginCompositingContent(object->displayItemC
lient(), WebCoreCompositeToSkiaComposite(context->compositeOperationDeprecated()
, WebBlendModeNormal), 1, &paintInvalidationRect); |
| 36 beginCompositingContent.replay(context); |
| 37 } |
| 38 |
| 39 return true; |
| 40 } |
| 41 |
| 42 void SVGMaskPainter::finishEffect(LayoutObject* object, GraphicsContext* context
) |
| 43 { |
| 44 ASSERT(object); |
| 45 ASSERT(context); |
| 46 ASSERT(m_mask.style()); |
| 47 ASSERT_WITH_SECURITY_IMPLICATION(!m_mask.needsLayout()); |
| 48 |
| 49 FloatRect paintInvalidationRect = object->paintInvalidationRectInLocalCoordi
nates(); |
| 50 { |
| 51 ColorFilter maskLayerFilter = m_mask.style()->svgStyle().maskType() == M
T_LUMINANCE |
| 52 ? ColorFilterLuminanceToAlpha : ColorFilterNone; |
| 53 CompositingRecorder maskCompositing(context, object->displayItemClient()
, SkXfermode::kDstIn_Mode, 1, &paintInvalidationRect, maskLayerFilter); |
| 54 drawMaskForRenderer(context, object->displayItemClient(), object->object
BoundingBox()); |
| 55 } |
| 56 |
| 57 if (RuntimeEnabledFeatures::slimmingPaintEnabled()) { |
| 58 ASSERT(context->displayItemList()); |
| 59 context->displayItemList()->add(EndCompositingDisplayItem::create(object
->displayItemClient())); |
| 60 } else { |
| 61 EndCompositingDisplayItem endCompositingContent(object->displayItemClien
t()); |
| 62 endCompositingContent.replay(context); |
| 63 } |
| 64 } |
| 65 |
| 66 void SVGMaskPainter::drawMaskForRenderer(GraphicsContext* context, DisplayItemCl
ient client, const FloatRect& targetBoundingBox) |
| 67 { |
| 68 ASSERT(context); |
| 69 |
| 70 AffineTransform contentTransformation; |
| 71 RefPtr<const SkPicture> maskContentPicture = m_mask.getContentPicture(conten
tTransformation, targetBoundingBox); |
| 72 |
| 73 TransformRecorder recorder(*context, client, contentTransformation); |
| 74 |
| 75 if (RuntimeEnabledFeatures::slimmingPaintEnabled()) { |
| 76 ASSERT(context->displayItemList()); |
| 77 context->displayItemList()->add(DrawingDisplayItem::create(client, Displ
ayItem::SVGMask, maskContentPicture)); |
| 78 } else { |
| 79 DrawingDisplayItem maskPicture(client, DisplayItem::SVGMask, maskContent
Picture); |
| 80 maskPicture.replay(context); |
| 81 } |
| 82 } |
| 83 |
| 84 } |
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