1 /*
2 * Copyright 2011, The Android Open Source Project
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "PaintTileOperation.h"
28 #include "LayerAndroid.h"
29 #include "PaintedSurface.h"
30
31 namespace WebCore {
32
PaintTileOperation(BaseTile * tile,PaintedSurface * surface)33 PaintTileOperation::PaintTileOperation(BaseTile* tile, PaintedSurface* surface)
34 : QueuedOperation(QueuedOperation::PaintTile, tile->page())
35 , m_tile(tile)
36 , m_surface(surface)
37 , m_layer(0)
38 {
39 if (m_tile)
40 m_tile->setRepaintPending(true);
41 if (m_surface)
42 m_layer = surface->layer();
43 SkSafeRef(m_surface);
44 SkSafeRef(m_layer);
45 }
46
~PaintTileOperation()47 PaintTileOperation::~PaintTileOperation()
48 {
49 if (m_tile) {
50 m_tile->setRepaintPending(false);
51 m_tile = 0;
52 }
53 SkSafeUnref(m_surface);
54 SkSafeUnref(m_layer);
55 }
56
operator ==(const QueuedOperation * operation)57 bool PaintTileOperation::operator==(const QueuedOperation* operation)
58 {
59 if (operation->type() != type())
60 return false;
61 const PaintTileOperation* op = static_cast<const PaintTileOperation*>(operation);
62 return op->m_tile == m_tile;
63 }
64
run()65 void PaintTileOperation::run()
66 {
67 if (m_tile) {
68 m_tile->paintBitmap();
69 m_tile->setRepaintPending(false);
70 m_tile = 0;
71 }
72 }
73
priority()74 int PaintTileOperation::priority()
75 {
76 if (!m_tile)
77 return -1;
78
79 int priority = 200000;
80
81 // if scrolling, prioritize the prefetch page, otherwise deprioritize
82 TiledPage* page = m_tile->page();
83 if (page && page->isPrefetchPage()) {
84 if (page->glWebViewState()->isScrolling())
85 priority = 0;
86 else
87 priority = 400000;
88 }
89
90 // prioritize higher draw count
91 unsigned long long currentDraw = TilesManager::instance()->getDrawGLCount();
92 unsigned long long drawDelta = currentDraw - m_tile->drawCount();
93 priority += 100000 * (int)std::min(drawDelta, (unsigned long long)1000);
94
95 // prioritize unpainted tiles, within the same drawCount
96 if (m_tile->frontTexture())
97 priority += 50000;
98
99 // for base tiles, prioritize based on position
100 if (!m_tile->isLayerTile()) {
101 bool goingDown = m_tile->page()->scrollingDown();
102 SkIRect *rect = m_tile->page()->expandedTileBounds();
103 priority += m_tile->x();
104
105 if (goingDown)
106 priority += 100000 - (1 + m_tile->y()) * 1000;
107 else
108 priority += m_tile->y() * 1000;
109 }
110
111 return priority;
112 }
113
114 }
115