2 * Copyright (C) 2010 Apple Inc. All rights reserved.
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5 * modification, are permitted provided that the following conditions
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27 #include "RenderFrameBase.h"
30 #include "FrameView.h"
31 #include "HTMLFrameElementBase.h"
32 #include "RenderView.h"
36 RenderFrameBase::RenderFrameBase(Element* element)
41 void RenderFrameBase::layoutWithFlattening(bool fixedWidth, bool fixedHeight)
43 FrameView* childFrameView = static_cast<FrameView*>(widget());
44 RenderView* childRoot = childFrameView ? static_cast<RenderView*>(childFrameView->frame()->contentRenderer()) : 0;
46 // Do not expand frames which has zero width or height
47 if (!width() || !height() || !childRoot) {
48 updateWidgetPosition();
50 childFrameView->layout();
51 setNeedsLayout(false);
55 // need to update to calculate min/max correctly
56 updateWidgetPosition();
57 if (childRoot->preferredLogicalWidthsDirty())
58 childRoot->computePreferredLogicalWidths();
60 // if scrollbars are off, and the width or height are fixed
61 // we obey them and do not expand. With frame flattening
62 // no subframe much ever become scrollable.
64 HTMLFrameElementBase* element = static_cast<HTMLFrameElementBase*>(node());
65 bool isScrollable = element->scrollingMode() != ScrollbarAlwaysOff;
67 // consider iframe inset border
68 int hBorder = borderLeft() + borderRight();
69 int vBorder = borderTop() + borderBottom();
71 // make sure minimum preferred width is enforced
72 if (isScrollable || !fixedWidth) {
73 setWidth(max(width(), childRoot->minPreferredLogicalWidth() + hBorder));
74 // update again to pass the new width to the child frame
75 updateWidgetPosition();
76 childFrameView->layout();
79 // expand the frame by setting frame height = content height
80 if (isScrollable || !fixedHeight || childRoot->isFrameSet())
81 setHeight(max(height(), childFrameView->contentsHeight() + vBorder));
82 if (isScrollable || !fixedWidth || childRoot->isFrameSet())
83 setWidth(max(width(), childFrameView->contentsWidth() + hBorder));
85 updateWidgetPosition();
87 ASSERT(!childFrameView->layoutPending());
88 ASSERT(!childRoot->needsLayout());
89 ASSERT(!childRoot->firstChild() || !childRoot->firstChild()->firstChild() || !childRoot->firstChild()->firstChild()->needsLayout());
91 setNeedsLayout(false);