1 /*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 2000 Simon Hausmann <hausmann@kde.org>
4 * (C) 2000 Stefan Schimanski (1Stein@gmx.de)
5 * Copyright (C) 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 *
22 */
23
24 #include "config.h"
25 #include "RenderFrame.h"
26
27 #include "FrameView.h"
28 #include "HTMLFrameElement.h"
29 #include "RenderView.h"
30
31 #ifdef FLATTEN_FRAMESET
32 #include "Frame.h"
33 #include "Document.h"
34 #include "RenderView.h"
35 #endif
36
37 namespace WebCore {
38
RenderFrame(HTMLFrameElement * frame)39 RenderFrame::RenderFrame(HTMLFrameElement* frame)
40 : RenderPart(frame)
41 {
42 setInline(false);
43 }
44
edgeInfo() const45 FrameEdgeInfo RenderFrame::edgeInfo() const
46 {
47 HTMLFrameElement* element = static_cast<HTMLFrameElement*>(node());
48 return FrameEdgeInfo(element->noResize(), element->hasFrameBorder());
49 }
50
viewCleared()51 void RenderFrame::viewCleared()
52 {
53 HTMLFrameElement* element = static_cast<HTMLFrameElement*>(node());
54 if (!element || !widget() || !widget()->isFrameView())
55 return;
56
57 FrameView* view = static_cast<FrameView*>(widget());
58
59 int marginw = element->getMarginWidth();
60 int marginh = element->getMarginHeight();
61
62 if (marginw != -1)
63 view->setMarginWidth(marginw);
64 if (marginh != -1)
65 view->setMarginHeight(marginh);
66 }
67
68 #ifdef FLATTEN_FRAMESET
layout()69 void RenderFrame::layout()
70 {
71 if (widget() && widget()->isFrameView()) {
72 FrameView* view = static_cast<FrameView*>(widget());
73 RenderView* root = NULL;
74 if (view->frame() && view->frame()->document() &&
75 view->frame()->document()->renderer() &&
76 view->frame()->document()->renderer()->isRenderView())
77 root = static_cast<RenderView*>(view->frame()->document()->renderer());
78 if (root) {
79 // Resize the widget so that the RenderView will layout according to those dimensions.
80 view->resize(width(), height());
81 view->layout();
82 // We can only grow in width and height because if positionFrames gives us a width and we become smaller,
83 // then the fixup process of forcing the frame to fill extra space will fail.
84 if (width() > root->docWidth()) {
85 view->resize(root->docWidth(), 0);
86 view->layout();
87 }
88 // Honor the height set by RenderFrameSet::positionFrames unless our document height is larger.
89 setHeight(max(root->docHeight(), height()));
90 setWidth(max(root->docWidth(), width()));
91 }
92 }
93 setNeedsLayout(false);
94 }
95 #endif
layoutWithFlattening(bool fixedWidth,bool fixedHeight)96 void RenderFrame::layoutWithFlattening(bool fixedWidth, bool fixedHeight)
97 {
98 // NOTE: The width and height have been set at this point by
99 // RenderFrameSet::positionFramesWithFlattening()
100
101 FrameView* childFrameView = static_cast<FrameView*>(widget());
102 RenderView* childRoot = childFrameView ? static_cast<RenderView*>(childFrameView->frame()->contentRenderer()) : 0;
103 HTMLFrameElement* element = static_cast<HTMLFrameElement*>(node());
104
105 // Do not expand framesets which has zero width or height
106 if (!width() || !height() || !childRoot) {
107 updateWidgetPosition();
108 if (childFrameView)
109 childFrameView->layout();
110 setNeedsLayout(false);
111 return;
112 }
113
114 // need to update to calculate min/max correctly
115 updateWidgetPosition();
116 if (childRoot->prefWidthsDirty())
117 childRoot->calcPrefWidths();
118
119 // if scrollbars are off, and the width or height are fixed
120 // we obey them and do not expand. With frame flattening
121 // no subframe much ever become scrollable.
122
123 bool isScrollable = element->scrollingMode() != ScrollbarAlwaysOff;
124
125 // make sure minimum preferred width is enforced
126 if (isScrollable || !fixedWidth || childRoot->isFrameSet())
127 setWidth(max(width(), childRoot->minPrefWidth()));
128
129 // update again to pass the width to the child frame
130 updateWidgetPosition();
131 childFrameView->layout();
132
133 // expand the frame by setting frame height = content height
134 if (isScrollable || !fixedHeight || childRoot->isFrameSet())
135 setHeight(max(height(), childFrameView->contentsHeight()));
136 if (isScrollable || !fixedWidth || childRoot->isFrameSet())
137 setWidth(max(width(), childFrameView->contentsWidth()));
138
139 updateWidgetPosition();
140
141 ASSERT(!childFrameView->layoutPending());
142 ASSERT(!childRoot->needsLayout());
143 ASSERT(!childRoot->firstChild() || !childRoot->firstChild()->firstChild() || !childRoot->firstChild()->firstChild()->needsLayout());
144
145 setNeedsLayout(false);
146 }
147
148 } // namespace WebCore
149