1 // Copyright 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
8 #if USE(ACCELERATED_COMPOSITING)
10 #include "CCLayerTilingData.h"
16 PassOwnPtr
<CCLayerTilingData
> CCLayerTilingData::create(const IntSize
& tileSize
, BorderTexelOption border
)
18 return adoptPtr(new CCLayerTilingData(tileSize
, border
));
21 CCLayerTilingData::CCLayerTilingData(const IntSize
& tileSize
, BorderTexelOption border
)
22 : m_tilingData(tileSize
, IntSize(), border
== HasBorderTexels
)
24 setTileSize(tileSize
);
27 void CCLayerTilingData::setTileSize(const IntSize
& size
)
29 if (tileSize() == size
)
34 m_tilingData
.setMaxTextureSize(size
);
37 const IntSize
& CCLayerTilingData::tileSize() const
39 return m_tilingData
.maxTextureSize();
42 void CCLayerTilingData::setBorderTexelOption(BorderTexelOption borderTexelOption
)
44 bool borderTexels
= borderTexelOption
== HasBorderTexels
;
45 if (hasBorderTexels() == borderTexels
)
49 m_tilingData
.setHasBorderTexels(borderTexels
);
52 const CCLayerTilingData
& CCLayerTilingData::operator=(const CCLayerTilingData
& tiler
)
54 m_tilingData
= tiler
.m_tilingData
;
59 void CCLayerTilingData::addTile(PassOwnPtr
<Tile
> tile
, int i
, int j
)
61 ASSERT(!tileAt(i
, j
));
63 m_tiles
.add(make_pair(i
, j
), tile
);
66 PassOwnPtr
<CCLayerTilingData::Tile
> CCLayerTilingData::takeTile(int i
, int j
)
68 return m_tiles
.take(make_pair(i
, j
));
71 CCLayerTilingData::Tile
* CCLayerTilingData::tileAt(int i
, int j
) const
73 return m_tiles
.get(make_pair(i
, j
));
76 void CCLayerTilingData::reset()
81 void CCLayerTilingData::contentRectToTileIndices(const IntRect
& contentRect
, int& left
, int& top
, int& right
, int& bottom
) const
83 // An empty rect doesn't result in an empty set of tiles, so don't pass an empty rect.
84 // FIXME: Possibly we should fill a vector of tiles instead,
85 // since the normal use of this function is to enumerate some tiles.
86 ASSERT(!contentRect
.isEmpty());
88 left
= m_tilingData
.tileXIndexFromSrcCoord(contentRect
.x());
89 top
= m_tilingData
.tileYIndexFromSrcCoord(contentRect
.y());
90 right
= m_tilingData
.tileXIndexFromSrcCoord(contentRect
.maxX() - 1);
91 bottom
= m_tilingData
.tileYIndexFromSrcCoord(contentRect
.maxY() - 1);
94 IntRect
CCLayerTilingData::tileRect(const Tile
* tile
) const
96 IntRect tileRect
= m_tilingData
.tileBoundsWithBorder(tile
->i(), tile
->j());
97 tileRect
.setSize(tileSize());
101 Region
CCLayerTilingData::opaqueRegionInContentRect(const IntRect
& contentRect
) const
103 if (contentRect
.isEmpty())
107 int left
, top
, right
, bottom
;
108 contentRectToTileIndices(contentRect
, left
, top
, right
, bottom
);
109 for (int j
= top
; j
<= bottom
; ++j
) {
110 for (int i
= left
; i
<= right
; ++i
) {
111 Tile
* tile
= tileAt(i
, j
);
115 IntRect tileOpaqueRect
= intersection(contentRect
, tile
->opaqueRect());
116 opaqueRegion
.unite(tileOpaqueRect
);
122 void CCLayerTilingData::setBounds(const IntSize
& size
)
124 m_tilingData
.setTotalSize(size
);
125 if (size
.isEmpty()) {
130 // Any tiles completely outside our new bounds are invalid and should be dropped.
131 int left
, top
, right
, bottom
;
132 contentRectToTileIndices(IntRect(IntPoint(), size
), left
, top
, right
, bottom
);
133 Vector
<TileMapKey
> invalidTileKeys
;
134 for (TileMap::const_iterator it
= m_tiles
.begin(); it
!= m_tiles
.end(); ++it
) {
135 if (it
->first
.first
> right
|| it
->first
.second
> bottom
)
136 invalidTileKeys
.append(it
->first
);
138 for (size_t i
= 0; i
< invalidTileKeys
.size(); ++i
)
139 m_tiles
.remove(invalidTileKeys
[i
]);
142 IntSize
CCLayerTilingData::bounds() const
144 return m_tilingData
.totalSize();
147 } // namespace WebCore
149 #endif // USE(ACCELERATED_COMPOSITING)