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
|
// Copyright 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "config.h"
#include "cc/layer_tiling_data.h"
#include "base/logging.h"
using namespace std;
namespace cc {
scoped_ptr<LayerTilingData> LayerTilingData::create(const IntSize& tileSize, BorderTexelOption border)
{
return make_scoped_ptr(new LayerTilingData(tileSize, border));
}
LayerTilingData::LayerTilingData(const IntSize& tileSize, BorderTexelOption border)
: m_tilingData(tileSize, IntSize(), border == HasBorderTexels)
{
setTileSize(tileSize);
}
LayerTilingData::~LayerTilingData()
{
}
void LayerTilingData::setTileSize(const IntSize& size)
{
if (tileSize() == size)
return;
reset();
m_tilingData.setMaxTextureSize(size);
}
IntSize LayerTilingData::tileSize() const
{
return m_tilingData.maxTextureSize();
}
void LayerTilingData::setBorderTexelOption(BorderTexelOption borderTexelOption)
{
bool borderTexels = borderTexelOption == HasBorderTexels;
if (hasBorderTexels() == borderTexels)
return;
reset();
m_tilingData.setHasBorderTexels(borderTexels);
}
const LayerTilingData& LayerTilingData::operator=(const LayerTilingData& tiler)
{
m_tilingData = tiler.m_tilingData;
return *this;
}
void LayerTilingData::addTile(scoped_ptr<Tile> tile, int i, int j)
{
DCHECK(!tileAt(i, j));
tile->moveTo(i, j);
m_tiles.add(make_pair(i, j), tile.Pass());
}
scoped_ptr<LayerTilingData::Tile> LayerTilingData::takeTile(int i, int j)
{
return m_tiles.take_and_erase(make_pair(i, j));
}
LayerTilingData::Tile* LayerTilingData::tileAt(int i, int j) const
{
return m_tiles.get(make_pair(i, j));
}
void LayerTilingData::reset()
{
m_tiles.clear();
}
void LayerTilingData::contentRectToTileIndices(const IntRect& contentRect, int& left, int& top, int& right, int& bottom) const
{
// An empty rect doesn't result in an empty set of tiles, so don't pass an empty rect.
// FIXME: Possibly we should fill a vector of tiles instead,
// since the normal use of this function is to enumerate some tiles.
DCHECK(!contentRect.isEmpty());
left = m_tilingData.tileXIndexFromSrcCoord(contentRect.x());
top = m_tilingData.tileYIndexFromSrcCoord(contentRect.y());
right = m_tilingData.tileXIndexFromSrcCoord(contentRect.maxX() - 1);
bottom = m_tilingData.tileYIndexFromSrcCoord(contentRect.maxY() - 1);
}
IntRect LayerTilingData::tileRect(const Tile* tile) const
{
IntRect tileRect = m_tilingData.tileBoundsWithBorder(tile->i(), tile->j());
tileRect.setSize(tileSize());
return tileRect;
}
Region LayerTilingData::opaqueRegionInContentRect(const IntRect& contentRect) const
{
if (contentRect.isEmpty())
return Region();
Region opaqueRegion;
int left, top, right, bottom;
contentRectToTileIndices(contentRect, left, top, right, bottom);
for (int j = top; j <= bottom; ++j) {
for (int i = left; i <= right; ++i) {
Tile* tile = tileAt(i, j);
if (!tile)
continue;
IntRect tileOpaqueRect = intersection(contentRect, tile->opaqueRect());
opaqueRegion.unite(tileOpaqueRect);
}
}
return opaqueRegion;
}
void LayerTilingData::setBounds(const IntSize& size)
{
m_tilingData.setTotalSize(size);
if (size.isEmpty()) {
m_tiles.clear();
return;
}
// Any tiles completely outside our new bounds are invalid and should be dropped.
int left, top, right, bottom;
contentRectToTileIndices(IntRect(IntPoint(), size), left, top, right, bottom);
std::vector<TileMapKey> invalidTileKeys;
for (TileMap::const_iterator it = m_tiles.begin(); it != m_tiles.end(); ++it) {
if (it->first.first > right || it->first.second > bottom)
invalidTileKeys.push_back(it->first);
}
for (size_t i = 0; i < invalidTileKeys.size(); ++i)
m_tiles.erase(invalidTileKeys[i]);
}
IntSize LayerTilingData::bounds() const
{
return m_tilingData.totalSize();
}
} // namespace cc
|
