1 /*
2 * Copyright (C) 2013 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "core/rendering/SubtreeLayoutScope.h"
33
34 #include "core/frame/FrameView.h"
35 #include "core/rendering/RenderObject.h"
36
37 namespace blink {
38
SubtreeLayoutScope(RenderObject & root)39 SubtreeLayoutScope::SubtreeLayoutScope(RenderObject& root)
40 : m_root(root)
41 {
42 RELEASE_ASSERT(m_root.document().view()->isInPerformLayout());
43 }
44
~SubtreeLayoutScope()45 SubtreeLayoutScope::~SubtreeLayoutScope()
46 {
47 RELEASE_ASSERT(!m_root.needsLayout());
48
49 #if ENABLE(ASSERT)
50 for (HashSet<RenderObject*>::iterator it = m_renderersToLayout.begin(); it != m_renderersToLayout.end(); ++it)
51 (*it)->assertRendererLaidOut();
52 #endif
53 }
54
setNeedsLayout(RenderObject * descendant)55 void SubtreeLayoutScope::setNeedsLayout(RenderObject* descendant)
56 {
57 ASSERT(descendant->isDescendantOf(&m_root));
58 descendant->setNeedsLayoutAndFullPaintInvalidation(MarkContainingBlockChain, this);
59 }
60
setChildNeedsLayout(RenderObject * descendant)61 void SubtreeLayoutScope::setChildNeedsLayout(RenderObject* descendant)
62 {
63 ASSERT(descendant->isDescendantOf(&m_root));
64 descendant->setChildNeedsLayout(MarkContainingBlockChain, this);
65 }
66
addRendererToLayout(RenderObject * renderer)67 void SubtreeLayoutScope::addRendererToLayout(RenderObject* renderer)
68 {
69 #if ENABLE(ASSERT)
70 m_renderersToLayout.add(renderer);
71 #endif
72 }
73
74 }
75