Chromium Code Reviews Chromium Code Reviews
Issue 589283002:
Move painting code from RenderView to ViewPainter. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk| OLD | NEW |
|---|---|
| (Empty) | |
| 1 // Copyright 2014 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/ViewPainter.h" | |
| 7 | |
| 8 #include "core/frame/FrameView.h" | |
| 9 #include "core/rendering/GraphicsContextAnnotator.h" | |
| 10 #include "core/rendering/PaintInfo.h" | |
| 11 #include "core/rendering/RenderBox.h" | |
| 12 #include "core/rendering/RenderView.h" | |
| 13 | |
| 14 namespace blink { | |
| 15 | |
| 16 void ViewPainter::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset) | |
| 17 { | |
| 18 // If we ever require layout but receive a paint anyway, something has gone horribly wrong. | |
| 19 ASSERT(!needsLayout()); | |
|
pdr.
2014/09/22 22:49:17
We can move this up, or remove it entirely.
chrishtr
2014/09/22 23:10:51
Done.
| |
| 20 // RenderViews should never be called to paint with an offset not on device pixels. | |
| 21 ASSERT(LayoutPoint(IntPoint(paintOffset.x(), paintOffset.y())) == paintOffse t); | |
| 22 | |
| 23 ANNOTATE_GRAPHICS_CONTEXT(paintInfo, &m_renderView); | |
| 24 | |
| 25 // This avoids painting garbage between columns if there is a column gap. | |
| 26 if (m_renderView.frameView() && m_renderView.style()->isOverflowPaged()) | |
| 27 paintInfo.context->fillRect(paintInfo.rect, m_renderView.frameView()->ba seBackgroundColor()); | |
| 28 | |
| 29 m_renderView.paintObject(paintInfo, paintOffset); | |
| 30 } | |
| 31 | |
| 32 static inline bool rendererObscuresBackground(RenderBox* rootBox) | |
| 33 { | |
| 34 ASSERT(rootBox); | |
| 35 RenderStyle* style = rootBox->style(); | |
| 36 if (style->visibility() != VISIBLE | |
| 37 || style->opacity() != 1 | |
| 38 || style->hasFilter() | |
| 39 || style->hasTransform()) | |
| 40 return false; | |
| 41 | |
| 42 if (rootBox->compositingState() == PaintsIntoOwnBacking) | |
| 43 return false; | |
| 44 | |
| 45 const RenderObject* rootRenderer = rootBox->rendererForRootBackground(); | |
| 46 if (rootRenderer->style()->backgroundClip() == TextFillBox) | |
| 47 return false; | |
| 48 | |
| 49 return true; | |
| 50 } | |
| 51 | |
| 52 void ViewPainter::paintBoxDecorationBackground(PaintInfo& paintInfo) | |
| 53 { | |
| 54 if (m_renderView.document().ownerElement() || !m_renderView.view()) | |
| 55 return; | |
| 56 | |
| 57 if (paintInfo.skipRootBackground()) | |
| 58 return; | |
| 59 | |
| 60 bool shouldPaintBackground = true; | |
| 61 Node* documentElement = m_renderView.document().documentElement(); | |
| 62 if (RenderBox* rootBox = documentElement ? toRenderBox(documentElement->rend erer()) : 0) | |
| 63 shouldPaintBackground = !rootFillsViewportBackground(rootBox) || !render erObscuresBackground(rootBox); | |
| 64 | |
| 65 // If painting will entirely fill the view, no need to fill the background. | |
| 66 if (!shouldPaintBackground) | |
| 67 return; | |
| 68 | |
| 69 // This code typically only executes if the root element's visibility has be en set to hidden, | |
| 70 // if there is a transform on the <html>, or if there is a page scale factor less than 1. | |
| 71 // Only fill with the base background color (typically white) if we're the r oot document, | |
| 72 // since iframes/frames with no background in the child document should show the parent's background. | |
| 73 if (!m_renderView.frameView()->isTransparent()) { | |
| 74 Color baseColor = m_renderView.frameView()->baseBackgroundColor(); | |
| 75 if (baseColor.alpha()) { | |
| 76 CompositeOperator previousOperator = paintInfo.context->compositeOpe ration(); | |
| 77 paintInfo.context->setCompositeOperation(CompositeCopy); | |
| 78 paintInfo.context->fillRect(paintInfo.rect, baseColor); | |
| 79 paintInfo.context->setCompositeOperation(previousOperator); | |
| 80 } else { | |
| 81 paintInfo.context->clearRect(paintInfo.rect); | |
| 82 } | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 bool ViewPainter::rootFillsViewportBackground(RenderBox* rootBox) const | |
| 87 { | |
| 88 ASSERT(rootBox); | |
| 89 // CSS Boxes always fill the viewport background (see paintRootBoxFillLayers ) | |
| 90 if (!rootBox->isSVG()) | |
| 91 return true; | |
| 92 | |
| 93 return rootBox->frameRect().contains(m_renderView.frameRect()); | |
| 94 } | |
| 95 | |
| 96 } // namespace blink | |
| OLD | NEW |
