1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
/*
* Copyright (C) 1997 Martin Jones (mjones@kde.org)
* (C) 1997 Torben Weis (weis@kde.org)
* (C) 1998 Waldo Bastian (bastian@kde.org)
* (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "RenderTableCol.h"
#include "CachedImage.h"
#include "HTMLNames.h"
#include "HTMLTableColElement.h"
#include "RenderTable.h"
#include "RenderTableCell.h"
namespace WebCore {
using namespace HTMLNames;
RenderTableCol::RenderTableCol(Node* node)
: RenderBox(node)
, m_span(1)
{
// init RenderObject attributes
setInline(true); // our object is not Inline
updateFromElement();
}
void RenderTableCol::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderBox::styleDidChange(diff, oldStyle);
if (diff == StyleDifferenceLayout)
propagateLayoutCueToTable();
// If border was changed, notify table.
if (parent()) {
RenderTable* table = this->table();
if (table && !table->selfNeedsLayout() && !table->normalChildNeedsLayout() && oldStyle && oldStyle->border() != style()->border())
table->invalidateCollapsedBorders();
}
}
void RenderTableCol::updateFromElement()
{
unsigned oldSpan = m_span;
Node* n = node();
if (n && (n->hasTagName(colTag) || n->hasTagName(colgroupTag))) {
HTMLTableColElement* tc = static_cast<HTMLTableColElement*>(n);
m_span = tc->span();
} else
m_span = !(style() && style()->display() == TABLE_COLUMN_GROUP);
if (m_span != oldSpan && style())
propagateLayoutCueToTable();
}
void RenderTableCol::willBeRemovedFromTree()
{
RenderBox::willBeRemovedFromTree();
// We don't really need to recompute our sections, but we need to update our
// column count and whether we have a column. Currently, we only have one
// size-fit-all flag but we may have to consider splitting it.
table()->setNeedsSectionRecalc();
}
bool RenderTableCol::isChildAllowed(RenderObject* child, RenderStyle* style) const
{
// We cannot use isTableColumn here as style() may return 0.
return child->isRenderTableCol() && style->display() == TABLE_COLUMN;
}
bool RenderTableCol::canHaveChildren() const
{
// Cols cannot have children. This is actually necessary to fix a bug
// with libraries.uc.edu, which makes a <p> be a table-column.
return isTableColumnGroup();
}
LayoutRect RenderTableCol::clippedOverflowRectForRepaint(RenderLayerModelObject* repaintContainer) const
{
// For now, just repaint the whole table.
// FIXME: Find a better way to do this, e.g., need to repaint all the cells that we
// might have propagated a background color or borders into.
// FIXME: check for repaintContainer each time here?
RenderTable* parentTable = table();
if (!parentTable)
return LayoutRect();
return parentTable->clippedOverflowRectForRepaint(repaintContainer);
}
void RenderTableCol::imageChanged(WrappedImagePtr, const IntRect*)
{
// FIXME: Repaint only the rect the image paints in.
repaint();
}
void RenderTableCol::computePreferredLogicalWidths()
{
// <col> and <colgroup> don't have preferred logical widths as they have
// no content so computing our preferred logical widths is wasteful.
ASSERT_NOT_REACHED();
}
void RenderTableCol::layout()
{
// There is no need to layout table <col> or <colgroup> as they have no content.
ASSERT_NOT_REACHED();
}
void RenderTableCol::propagateLayoutCueToTable() const
{
// Forward any layout hint to the table: this is required as the table is
// the one to layout / compute preferred logical widths on all the cells.
if (RenderTable* table = this->table()) {
table->setChildNeedsLayout(true);
table->setPreferredLogicalWidthsDirty(true);
}
}
RenderTable* RenderTableCol::table() const
{
RenderObject* table = parent();
if (table && !table->isTable())
table = table->parent();
return table && table->isTable() ? toRenderTable(table) : 0;
}
RenderTableCol* RenderTableCol::enclosingColumnGroup() const
{
if (!parent()->isRenderTableCol())
return 0;
RenderTableCol* parentColumnGroup = toRenderTableCol(parent());
ASSERT(parentColumnGroup->isTableColumnGroup());
ASSERT(isTableColumn());
return parentColumnGroup;
}
RenderTableCol* RenderTableCol::nextColumn() const
{
// If |this| is a column-group, the next column is the colgroup's first child column.
if (RenderObject* firstChild = this->firstChild())
return toRenderTableCol(firstChild);
// Otherwise it's the next column along.
RenderObject* next = nextSibling();
// Failing that, the child is the last column in a column-group, so the next column is the next column/column-group after its column-group.
if (!next && parent()->isRenderTableCol())
next = parent()->nextSibling();
for (; next && !next->isRenderTableCol(); next = next->nextSibling()) {
// We allow captions mixed with columns and column-groups.
if (next->isTableCaption())
continue;
return 0;
}
return toRenderTableCol(next);
}
const BorderValue& RenderTableCol::borderAdjoiningCellStartBorder(const RenderTableCell*) const
{
return style()->borderStart();
}
const BorderValue& RenderTableCol::borderAdjoiningCellEndBorder(const RenderTableCell*) const
{
return style()->borderEnd();
}
const BorderValue& RenderTableCol::borderAdjoiningCellBefore(const RenderTableCell* cell) const
{
ASSERT_UNUSED(cell, table()->colElement(cell->col() + cell->colSpan()) == this);
return style()->borderStart();
}
const BorderValue& RenderTableCol::borderAdjoiningCellAfter(const RenderTableCell* cell) const
{
ASSERT_UNUSED(cell, table()->colElement(cell->col() - 1) == this);
return style()->borderEnd();
}
}
|
