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| 1 /* | 1 /* |
| 2 * Copyright (C) 2009 Apple Inc. All rights reserved. | 2 * Copyright (C) 2009 Apple Inc. 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 | 20 |
| 21 #include "config.h" | 21 #include "config.h" |
| 22 #include "RenderBoxModelObject.h" | 22 #include "RenderBoxModelObject.h" |
| 23 | 23 |
| 24 #include "RenderBlock.h" | |
| 25 #include "RenderLayer.h" | |
| 26 #include "RenderView.h" | |
| 27 | |
| 28 namespace WebCore { | 24 namespace WebCore { |
| 29 | 25 |
| 30 bool RenderBoxModelObject::s_wasFloating = false; | |
| 31 | |
| 32 RenderBoxModelObject::RenderBoxModelObject(Node* node) | 26 RenderBoxModelObject::RenderBoxModelObject(Node* node) |
| 33 : RenderObject(node) | 27 : RenderObject(node) |
| 34 , m_layer(0) | |
| 35 { | 28 { |
| 36 } | 29 } |
| 37 | 30 |
| 38 RenderBoxModelObject::~RenderBoxModelObject() | 31 RenderBoxModelObject::~RenderBoxModelObject() |
| 39 { | 32 { |
| 40 } | 33 } |
| 41 | 34 |
| 42 void RenderBoxModelObject::destroy() | |
| 43 { | |
| 44 // This must be done before we destroy the RenderObject. | |
| 45 if (m_layer) | |
| 46 m_layer->clearClipRects(); | |
| 47 RenderObject::destroy(); | |
| 48 } | |
| 49 | |
| 50 void RenderBoxModelObject::styleWillChange(StyleDifference diff, const RenderSty
le* newStyle) | |
| 51 { | |
| 52 s_wasFloating = isFloating(); | |
| 53 RenderObject::styleWillChange(diff, newStyle); | |
| 54 } | |
| 55 | |
| 56 void RenderBoxModelObject::styleDidChange(StyleDifference diff, const RenderStyl
e* oldStyle) | |
| 57 { | |
| 58 RenderObject::styleDidChange(diff, oldStyle); | |
| 59 updateBoxModelInfoFromStyle(); | |
| 60 | |
| 61 if (requiresLayer()) { | |
| 62 if (!layer()) { | |
| 63 if (s_wasFloating && isFloating()) | |
| 64 setChildNeedsLayout(true); | |
| 65 m_layer = new (renderArena()) RenderLayer(this); | |
| 66 setHasLayer(true); | |
| 67 m_layer->insertOnlyThisLayer(); | |
| 68 if (parent() && !needsLayout() && containingBlock()) | |
| 69 m_layer->updateLayerPositions(); | |
| 70 } | |
| 71 } else if (layer() && layer()->parent()) { | |
| 72 | |
| 73 RenderLayer* layer = m_layer; | |
| 74 m_layer = 0; | |
| 75 setHasLayer(false); | |
| 76 setHasTransform(false); // Either a transform wasn't specified or the ob
ject doesn't support transforms, so just null out the bit. | |
| 77 setHasReflection(false); | |
| 78 layer->removeOnlyThisLayer(); | |
| 79 if (s_wasFloating && isFloating()) | |
| 80 setChildNeedsLayout(true); | |
| 81 } | |
| 82 | |
| 83 if (m_layer) | |
| 84 m_layer->styleChanged(diff, oldStyle); | |
| 85 } | |
| 86 | |
| 87 void RenderBoxModelObject::updateBoxModelInfoFromStyle() | |
| 88 { | |
| 89 // Set the appropriate bits for a box model object. Since all bits are clea
red in styleWillChange, | |
| 90 // we only check for bits that could possibly be set to true. | |
| 91 setHasBoxDecorations(style()->hasBorder() || style()->hasBackground() || sty
le()->hasAppearance() || style()->boxShadow()); | |
| 92 setInline(style()->isDisplayInlineType()); | |
| 93 setRelPositioned(style()->position() == RelativePosition); | |
| 94 } | |
| 95 | |
| 96 int RenderBoxModelObject::relativePositionOffsetX() const | |
| 97 { | |
| 98 if (!style()->left().isAuto()) { | |
| 99 if (!style()->right().isAuto() && containingBlock()->style()->direction(
) == RTL) | |
| 100 return -style()->right().calcValue(containingBlockWidth()); | |
| 101 return style()->left().calcValue(containingBlockWidth()); | |
| 102 } | |
| 103 if (!style()->right().isAuto()) | |
| 104 return -style()->right().calcValue(containingBlockWidth()); | |
| 105 return 0; | |
| 106 } | |
| 107 | |
| 108 int RenderBoxModelObject::relativePositionOffsetY() const | |
| 109 { | |
| 110 if (!style()->top().isAuto()) { | |
| 111 if (!style()->top().isPercent() || containingBlock()->style()->height().
isFixed()) | |
| 112 return style()->top().calcValue(containingBlockHeight()); | |
| 113 } else if (!style()->bottom().isAuto()) { | |
| 114 if (!style()->bottom().isPercent() || containingBlock()->style()->height
().isFixed()) | |
| 115 return -style()->bottom().calcValue(containingBlockHeight()); | |
| 116 } | |
| 117 return 0; | |
| 118 } | |
| 119 | |
| 120 } // namespace WebCore | 35 } // namespace WebCore |
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