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Side by Side Diff: sky/engine/core/rendering/RenderBoxModelObject.cpp

Issue 928393003: Remove the concept of document.documentElement (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 10 months ago
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1 /* 1 /*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org) 3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com) 4 * (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
5 * (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com) 5 * (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
6 * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 6 * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
7 * Copyright (C) 2010 Google Inc. All rights reserved. 7 * Copyright (C) 2010 Google Inc. All rights reserved.
8 * 8 *
9 * This library is free software; you can redistribute it and/or 9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public 10 * modify it under the terms of the GNU Library General Public
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112 if (cb->isRenderView()) 112 if (cb->isRenderView())
113 return false; 113 return false;
114 114
115 if (cb->isOutOfFlowPositioned() && !cb->style()->logicalTop().isAuto() && !c b->style()->logicalBottom().isAuto()) 115 if (cb->isOutOfFlowPositioned() && !cb->style()->logicalTop().isAuto() && !c b->style()->logicalBottom().isAuto())
116 return false; 116 return false;
117 117
118 // If the height of the containing block computes to 'auto', then it hasn't been 'specified explicitly'. 118 // If the height of the containing block computes to 'auto', then it hasn't been 'specified explicitly'.
119 return cb->hasAutoHeightOrContainingBlockWithAutoHeight(); 119 return cb->hasAutoHeightOrContainingBlockWithAutoHeight();
120 } 120 }
121 121
122 bool RenderBoxModelObject::isDocumentElementWithOpaqueBackground() const
123 {
124 if (!isDocumentElement())
125 return false;
126
127 // The background is opaque only if we're the root document, since iframes w ith
128 // no background in the child document should show the parent's background.
129 // FIXME(sky): This used to check the <body> element and is now probably wro ng.
130 if (view()->frameView())
131 return !view()->frameView()->isTransparent();
132
133 return true;
134 }
135
136 void RenderBoxModelObject::paintRootBackgroundColor(const PaintInfo& paintInfo, const LayoutRect& rect, const Color& bgColor)
137 {
138 GraphicsContext* context = paintInfo.context;
139 if (rect.isEmpty())
140 return;
141
142 ASSERT(isDocumentElement());
143
144 IntRect backgroundRect(pixelSnappedIntRect(rect));
145 backgroundRect.intersect(paintInfo.rect);
146
147 Color baseColor = view()->frameView()->baseBackgroundColor();
148 bool shouldClearDocumentBackground = document().settings() && document().set tings()->shouldClearDocumentBackground();
149 CompositeOperator operation = shouldClearDocumentBackground ? CompositeCopy : context->compositeOperation();
150
151 // If we have an alpha go ahead and blend with the base background color.
152 if (baseColor.alpha()) {
153 if (bgColor.alpha())
154 baseColor = baseColor.blend(bgColor);
155 context->fillRect(backgroundRect, baseColor, operation);
156 } else if (bgColor.alpha()) {
157 context->fillRect(backgroundRect, bgColor, operation);
158 } else if (shouldClearDocumentBackground) {
159 context->clearRect(backgroundRect);
160 }
161 }
162
163 LayoutSize RenderBoxModelObject::relativePositionOffset() const 122 LayoutSize RenderBoxModelObject::relativePositionOffset() const
164 { 123 {
165 LayoutSize offset; 124 LayoutSize offset;
166 125
167 RenderBlock* containingBlock = this->containingBlock(); 126 RenderBlock* containingBlock = this->containingBlock();
168 127
169 // Objects that shrink to avoid floats normally use available line width whe n computing containing block width. However 128 // Objects that shrink to avoid floats normally use available line width whe n computing containing block width. However
170 // in the case of relative positioning using percentages, we can't do this. The offset should always be resolved using the 129 // in the case of relative positioning using percentages, we can't do this. The offset should always be resolved using the
171 // available width of the containing block. Therefore we don't use containi ngBlockLogicalWidthForContent() here, but instead explicitly 130 // available width of the containing block. Therefore we don't use containi ngBlockLogicalWidthForContent() here, but instead explicitly
172 // call availableWidth on our containing block. 131 // call availableWidth on our containing block.
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364 GraphicsContext* context = paintInfo.context; 323 GraphicsContext* context = paintInfo.context;
365 if (rect.isEmpty()) 324 if (rect.isEmpty())
366 return; 325 return;
367 326
368 bool includeLeftEdge = box ? box->includeLogicalLeftEdge() : true; 327 bool includeLeftEdge = box ? box->includeLogicalLeftEdge() : true;
369 bool includeRightEdge = box ? box->includeLogicalRightEdge() : true; 328 bool includeRightEdge = box ? box->includeLogicalRightEdge() : true;
370 329
371 bool hasRoundedBorder = style()->hasBorderRadius() && (includeLeftEdge || in cludeRightEdge); 330 bool hasRoundedBorder = style()->hasBorderRadius() && (includeLeftEdge || in cludeRightEdge);
372 bool clippedWithLocalScrolling = hasOverflowClip() && bgLayer.attachment() = = LocalBackgroundAttachment; 331 bool clippedWithLocalScrolling = hasOverflowClip() && bgLayer.attachment() = = LocalBackgroundAttachment;
373 bool isBorderFill = bgLayer.clip() == BorderFillBox; 332 bool isBorderFill = bgLayer.clip() == BorderFillBox;
374 bool isDocumentElementRenderer = this->isDocumentElement();
375 bool isBottomLayer = !bgLayer.next(); 333 bool isBottomLayer = !bgLayer.next();
376 334
377 Color bgColor = color; 335 Color bgColor = color;
378 StyleImage* bgImage = bgLayer.image(); 336 StyleImage* bgImage = bgLayer.image();
379 bool shouldPaintBackgroundImage = bgImage && bgImage->canRender(*this); 337 bool shouldPaintBackgroundImage = bgImage && bgImage->canRender(*this);
380 338
381 bool colorVisible = bgColor.alpha(); 339 bool colorVisible = bgColor.alpha();
382 340
383 // Fast path for drawing simple color backgrounds. 341 // Fast path for drawing simple color backgrounds.
384 if (!isDocumentElementRenderer && !clippedWithLocalScrolling && !shouldPaint BackgroundImage && isBorderFill && isBottomLayer) { 342 if (!clippedWithLocalScrolling && !shouldPaintBackgroundImage && isBorderFil l && isBottomLayer) {
385 if (!colorVisible) 343 if (!colorVisible)
386 return; 344 return;
387 345
388 bool boxShadowShouldBeAppliedToBackground = this->boxShadowShouldBeAppli edToBackground(bleedAvoidance, box); 346 bool boxShadowShouldBeAppliedToBackground = this->boxShadowShouldBeAppli edToBackground(bleedAvoidance, box);
389 GraphicsContextStateSaver shadowStateSaver(*context, boxShadowShouldBeAp pliedToBackground); 347 GraphicsContextStateSaver shadowStateSaver(*context, boxShadowShouldBeAp pliedToBackground);
390 if (boxShadowShouldBeAppliedToBackground) 348 if (boxShadowShouldBeAppliedToBackground)
391 applyBoxShadowForBackground(context, this); 349 applyBoxShadowForBackground(context, this);
392 350
393 if (hasRoundedBorder && bleedAvoidance != BackgroundBleedClipBackground) { 351 if (hasRoundedBorder && bleedAvoidance != BackgroundBleedClipBackground) {
394 RoundedRect border = backgroundRoundedRectAdjustedForBleedAvoidance( context, rect, bleedAvoidance, box, boxSize, includeLeftEdge, includeRightEdge); 352 RoundedRect border = backgroundRoundedRectAdjustedForBleedAvoidance( context, rect, bleedAvoidance, box, boxSize, includeLeftEdge, includeRightEdge);
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465 ASSERT_NOT_REACHED(); 423 ASSERT_NOT_REACHED();
466 break; 424 break;
467 } 425 }
468 426
469 // Paint the color first underneath all images, culled if background image o ccludes it. 427 // Paint the color first underneath all images, culled if background image o ccludes it.
470 // FIXME: In the bgLayer->hasFiniteBounds() case, we could improve the culli ng test 428 // FIXME: In the bgLayer->hasFiniteBounds() case, we could improve the culli ng test
471 // by verifying whether the background image covers the entire layout rect. 429 // by verifying whether the background image covers the entire layout rect.
472 if (isBottomLayer) { 430 if (isBottomLayer) {
473 IntRect backgroundRect(pixelSnappedIntRect(scrolledPaintRect)); 431 IntRect backgroundRect(pixelSnappedIntRect(scrolledPaintRect));
474 bool boxShadowShouldBeAppliedToBackground = this->boxShadowShouldBeAppli edToBackground(bleedAvoidance, box); 432 bool boxShadowShouldBeAppliedToBackground = this->boxShadowShouldBeAppli edToBackground(bleedAvoidance, box);
475 bool isOpaqueRoot = (isDocumentElementRenderer && !bgColor.hasAlpha()) | | isDocumentElementWithOpaqueBackground(); 433 if (boxShadowShouldBeAppliedToBackground || !shouldPaintBackgroundImage || !bgLayer.hasOpaqueImage(this) || !bgLayer.hasRepeatXY()) {
476 if (boxShadowShouldBeAppliedToBackground || !shouldPaintBackgroundImage || !bgLayer.hasOpaqueImage(this) || !bgLayer.hasRepeatXY() || (isOpaqueRoot && ! toRenderBox(this)->height())) {
477 if (!boxShadowShouldBeAppliedToBackground) 434 if (!boxShadowShouldBeAppliedToBackground)
478 backgroundRect.intersect(paintInfo.rect); 435 backgroundRect.intersect(paintInfo.rect);
479 436
480 GraphicsContextStateSaver shadowStateSaver(*context, boxShadowShould BeAppliedToBackground); 437 GraphicsContextStateSaver shadowStateSaver(*context, boxShadowShould BeAppliedToBackground);
481 if (boxShadowShouldBeAppliedToBackground) 438 if (boxShadowShouldBeAppliedToBackground)
482 applyBoxShadowForBackground(context, this); 439 applyBoxShadowForBackground(context, this);
483 440
484 if (isOpaqueRoot && !skipBaseColor) { 441 if (bgColor.alpha())
485 paintRootBackgroundColor(paintInfo, rect, bgColor);
486 } else if (bgColor.alpha()) {
487 context->fillRect(backgroundRect, bgColor, context->compositeOpe ration()); 442 context->fillRect(backgroundRect, bgColor, context->compositeOpe ration());
488 }
489 } 443 }
490 } 444 }
491 445
492 // no progressive loading of the background image 446 // no progressive loading of the background image
493 if (shouldPaintBackgroundImage) { 447 if (shouldPaintBackgroundImage) {
494 BackgroundImageGeometry geometry; 448 BackgroundImageGeometry geometry;
495 calculateBackgroundImageGeometry(paintInfo.paintContainer(), bgLayer, sc rolledPaintRect, geometry, backgroundObject); 449 calculateBackgroundImageGeometry(paintInfo.paintContainer(), bgLayer, sc rolledPaintRect, geometry, backgroundObject);
496 geometry.clip(paintInfo.rect); 450 geometry.clip(paintInfo.rect);
497 if (!geometry.destRect().isEmpty()) { 451 if (!geometry.destRect().isEmpty()) {
498 // FIXME(sky): Is it possible for the bgLayer to be something other that CompositeSourceOver? 452 // FIXME(sky): Is it possible for the bgLayer to be something other that CompositeSourceOver?
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733 top = borderTop(); 687 top = borderTop();
734 bottom = borderBottom(); 688 bottom = borderBottom();
735 if (fillLayer.origin() == ContentFillBox) { 689 if (fillLayer.origin() == ContentFillBox) {
736 left += paddingLeft(); 690 left += paddingLeft();
737 right += paddingRight(); 691 right += paddingRight();
738 top += paddingTop(); 692 top += paddingTop();
739 bottom += paddingBottom(); 693 bottom += paddingBottom();
740 } 694 }
741 } 695 }
742 696
743 // The background of the box generated by the root element covers the en tire canvas including 697 positioningAreaSize = pixelSnappedIntSize(paintRect.size() - LayoutSize( left + right, top + bottom), paintRect.location());
744 // its margins. Since those were added in already, we have to factor the m out when computing
745 // the background positioning area.
746 if (isDocumentElement()) {
747 positioningAreaSize = pixelSnappedIntSize(toRenderBox(this)->size() - LayoutSize(left + right, top + bottom), toRenderBox(this)->location());
748 left += marginLeft();
749 top += marginTop();
750 } else
751 positioningAreaSize = pixelSnappedIntSize(paintRect.size() - LayoutS ize(left + right, top + bottom), paintRect.location());
752 } else { 698 } else {
753 geometry.setHasNonLocalGeometry(); 699 geometry.setHasNonLocalGeometry();
754 700
755 IntRect viewportRect = pixelSnappedIntRect(viewRect()); 701 IntRect viewportRect = pixelSnappedIntRect(viewRect());
756 702
757 if (paintContainer) { 703 if (paintContainer) {
758 IntPoint absoluteContainerOffset = roundedIntPoint(paintContainer->l ocalToAbsolute(FloatPoint())); 704 IntPoint absoluteContainerOffset = roundedIntPoint(paintContainer->l ocalToAbsolute(FloatPoint()));
759 viewportRect.moveBy(-absoluteContainerOffset); 705 viewportRect.moveBy(-absoluteContainerOffset);
760 } 706 }
761 707
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2458 ASSERT(!beforeChild || toBoxModelObject == beforeChild->parent()); 2404 ASSERT(!beforeChild || toBoxModelObject == beforeChild->parent());
2459 for (RenderObject* child = slowFirstChild(); child; ) { 2405 for (RenderObject* child = slowFirstChild(); child; ) {
2460 // Save our next sibling as moveChildTo will clear it. 2406 // Save our next sibling as moveChildTo will clear it.
2461 RenderObject* nextSibling = child->nextSibling(); 2407 RenderObject* nextSibling = child->nextSibling();
2462 moveChildTo(toBoxModelObject, child, beforeChild, fullRemoveInsert); 2408 moveChildTo(toBoxModelObject, child, beforeChild, fullRemoveInsert);
2463 child = nextSibling; 2409 child = nextSibling;
2464 } 2410 }
2465 } 2411 }
2466 2412
2467 } // namespace blink 2413 } // namespace blink
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