layout/xul/grid/nsGridLayout2.cpp@97036ab72558
layout/xul/grid/nsGridLayout2.cpp
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 //
7 // Eric Vaughan
8 // Netscape Communications
9 //
10 // See documentation in associated header file
11 //
13 #include "nsGridLayout2.h"
14 #include "nsGridRowGroupLayout.h"
15 #include "nsGridRow.h"
16 #include "nsBox.h"
17 #include "nsIScrollableFrame.h"
18 #include "nsSprocketLayout.h"
19 #include "nsHTMLReflowState.h"
21 nsresult
22 NS_NewGridLayout2( nsIPresShell* aPresShell, nsBoxLayout** aNewLayout)
23 {
24 *aNewLayout = new nsGridLayout2(aPresShell);
25 NS_IF_ADDREF(*aNewLayout);
27 return NS_OK;
29 }
31 nsGridLayout2::nsGridLayout2(nsIPresShell* aPresShell):nsStackLayout()
32 {
33 }
35 // static
36 void
37 nsGridLayout2::AddOffset(nsBoxLayoutState& aState, nsIFrame* aChild, nsSize& aSize)
38 {
39 nsMargin offset;
40 GetOffset(aState, aChild, offset);
41 aSize.width += offset.left;
42 aSize.height += offset.top;
43 }
45 NS_IMETHODIMP
46 nsGridLayout2::Layout(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState)
47 {
48 // XXX This should be set a better way!
49 mGrid.SetBox(aBox);
50 NS_ASSERTION(aBox->GetLayoutManager() == this, "setting incorrect box");
52 nsresult rv = nsStackLayout::Layout(aBox, aBoxLayoutState);
53 #ifdef DEBUG_grid
54 mGrid.PrintCellMap();
55 #endif
56 return rv;
57 }
59 void
60 nsGridLayout2::IntrinsicWidthsDirty(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState)
61 {
62 nsStackLayout::IntrinsicWidthsDirty(aBox, aBoxLayoutState);
63 // XXXldb We really don't need to do all the work that NeedsRebuild
64 // does; we just need to mark intrinsic widths dirty on the
65 // (row/column)(s/-groups).
66 mGrid.NeedsRebuild(aBoxLayoutState);
67 }
69 nsGrid*
70 nsGridLayout2::GetGrid(nsIFrame* aBox, int32_t* aIndex, nsGridRowLayout* aRequestor)
71 {
72 // XXX This should be set a better way!
73 mGrid.SetBox(aBox);
74 NS_ASSERTION(aBox->GetLayoutManager() == this, "setting incorrect box");
75 return &mGrid;
76 }
78 void
79 nsGridLayout2::AddWidth(nsSize& aSize, nscoord aSize2, bool aIsHorizontal)
80 {
81 nscoord& size = GET_WIDTH(aSize, aIsHorizontal);
83 if (size != NS_INTRINSICSIZE) {
84 if (aSize2 == NS_INTRINSICSIZE)
85 size = NS_INTRINSICSIZE;
86 else
87 size += aSize2;
88 }
89 }
91 nsSize
92 nsGridLayout2::GetMinSize(nsIFrame* aBox, nsBoxLayoutState& aState)
93 {
94 nsSize minSize = nsStackLayout::GetMinSize(aBox, aState);
96 // if there are no <rows> tags that will sum up our columns,
97 // sum up our columns here.
98 nsSize total(0,0);
99 nsIFrame* rowsBox = mGrid.GetRowsBox();
100 nsIFrame* columnsBox = mGrid.GetColumnsBox();
101 if (!rowsBox || !columnsBox) {
102 if (!rowsBox) {
103 // max height is the sum of our rows
104 int32_t rows = mGrid.GetRowCount();
105 for (int32_t i=0; i < rows; i++)
106 {
107 nscoord height = mGrid.GetMinRowHeight(aState, i, true);
108 AddWidth(total, height, false); // AddHeight
109 }
110 }
112 if (!columnsBox) {
113 // max height is the sum of our rows
114 int32_t columns = mGrid.GetColumnCount();
115 for (int32_t i=0; i < columns; i++)
116 {
117 nscoord width = mGrid.GetMinRowHeight(aState, i, false);
118 AddWidth(total, width, true); // AddWidth
119 }
120 }
122 AddMargin(aBox, total);
123 AddOffset(aState, aBox, total);
124 AddLargestSize(minSize, total);
125 }
127 return minSize;
128 }
130 nsSize
131 nsGridLayout2::GetPrefSize(nsIFrame* aBox, nsBoxLayoutState& aState)
132 {
133 nsSize pref = nsStackLayout::GetPrefSize(aBox, aState);
135 // if there are no <rows> tags that will sum up our columns,
136 // sum up our columns here.
137 nsSize total(0,0);
138 nsIFrame* rowsBox = mGrid.GetRowsBox();
139 nsIFrame* columnsBox = mGrid.GetColumnsBox();
140 if (!rowsBox || !columnsBox) {
141 if (!rowsBox) {
142 // max height is the sum of our rows
143 int32_t rows = mGrid.GetRowCount();
144 for (int32_t i=0; i < rows; i++)
145 {
146 nscoord height = mGrid.GetPrefRowHeight(aState, i, true);
147 AddWidth(total, height, false); // AddHeight
148 }
149 }
151 if (!columnsBox) {
152 // max height is the sum of our rows
153 int32_t columns = mGrid.GetColumnCount();
154 for (int32_t i=0; i < columns; i++)
155 {
156 nscoord width = mGrid.GetPrefRowHeight(aState, i, false);
157 AddWidth(total, width, true); // AddWidth
158 }
159 }
161 AddMargin(aBox, total);
162 AddOffset(aState, aBox, total);
163 AddLargestSize(pref, total);
164 }
166 return pref;
167 }
169 nsSize
170 nsGridLayout2::GetMaxSize(nsIFrame* aBox, nsBoxLayoutState& aState)
171 {
172 nsSize maxSize = nsStackLayout::GetMaxSize(aBox, aState);
174 // if there are no <rows> tags that will sum up our columns,
175 // sum up our columns here.
176 nsSize total(NS_INTRINSICSIZE, NS_INTRINSICSIZE);
177 nsIFrame* rowsBox = mGrid.GetRowsBox();
178 nsIFrame* columnsBox = mGrid.GetColumnsBox();
179 if (!rowsBox || !columnsBox) {
180 if (!rowsBox) {
181 total.height = 0;
182 // max height is the sum of our rows
183 int32_t rows = mGrid.GetRowCount();
184 for (int32_t i=0; i < rows; i++)
185 {
186 nscoord height = mGrid.GetMaxRowHeight(aState, i, true);
187 AddWidth(total, height, false); // AddHeight
188 }
189 }
191 if (!columnsBox) {
192 total.width = 0;
193 // max height is the sum of our rows
194 int32_t columns = mGrid.GetColumnCount();
195 for (int32_t i=0; i < columns; i++)
196 {
197 nscoord width = mGrid.GetMaxRowHeight(aState, i, false);
198 AddWidth(total, width, true); // AddWidth
199 }
200 }
202 AddMargin(aBox, total);
203 AddOffset(aState, aBox, total);
204 AddSmallestSize(maxSize, total);
205 }
207 return maxSize;
208 }
210 int32_t
211 nsGridLayout2::BuildRows(nsIFrame* aBox, nsGridRow* aRows)
212 {
213 if (aBox) {
214 aRows[0].Init(aBox, true);
215 return 1;
216 }
217 return 0;
218 }
220 nsMargin
221 nsGridLayout2::GetTotalMargin(nsIFrame* aBox, bool aIsHorizontal)
222 {
223 nsMargin margin(0,0,0,0);
224 return margin;
225 }
227 void
228 nsGridLayout2::ChildrenInserted(nsIFrame* aBox, nsBoxLayoutState& aState,
229 nsIFrame* aPrevBox,
230 const nsFrameList::Slice& aNewChildren)
231 {
232 mGrid.NeedsRebuild(aState);
233 }
235 void
236 nsGridLayout2::ChildrenAppended(nsIFrame* aBox, nsBoxLayoutState& aState,
237 const nsFrameList::Slice& aNewChildren)
238 {
239 mGrid.NeedsRebuild(aState);
240 }
242 void
243 nsGridLayout2::ChildrenRemoved(nsIFrame* aBox, nsBoxLayoutState& aState,
244 nsIFrame* aChildList)
245 {
246 mGrid.NeedsRebuild(aState);
247 }
249 void
250 nsGridLayout2::ChildrenSet(nsIFrame* aBox, nsBoxLayoutState& aState,
251 nsIFrame* aChildList)
252 {
253 mGrid.NeedsRebuild(aState);
254 }
256 NS_IMPL_ADDREF_INHERITED(nsGridLayout2, nsStackLayout)
257 NS_IMPL_RELEASE_INHERITED(nsGridLayout2, nsStackLayout)
259 NS_INTERFACE_MAP_BEGIN(nsGridLayout2)
260 NS_INTERFACE_MAP_ENTRY(nsIGridPart)
261 NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIGridPart)
262 NS_INTERFACE_MAP_END_INHERITING(nsStackLayout)
