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
|
/*
* Copyright 2012, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef PicturePile_h
#define PicturePile_h
#include "IntRect.h"
#include "IntSize.h"
#include "PrerenderedInval.h"
#include "SkBitmap.h"
#include "SkRegion.h"
#include "SkRefCnt.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/Vector.h>
#define USE_RECORDING_CONTEXT true
#if USE_RECORDING_CONTEXT
namespace WebCore {
class Recording;
}
typedef WebCore::Recording Picture;
#else
class SkPicture;
typedef SkPicture Picture;
#endif
class SkCanvas;
namespace WebCore {
class GraphicsContext;
class PicturePainter {
public:
virtual void paintContents(GraphicsContext* gc, IntRect& dirty) = 0;
virtual SkCanvas* createPrerenderCanvas(PrerenderedInval* prerendered)
{
return 0;
}
virtual ~PicturePainter() {}
};
class PictureContainer {
public:
Picture* picture;
IntRect area;
bool dirty;
RefPtr<PrerenderedInval> prerendered;
float maxZoomScale;
PictureContainer(const IntRect& area)
: picture(0)
, area(area)
, dirty(true)
, maxZoomScale(1)
{}
PictureContainer(const PictureContainer& other);
~PictureContainer();
};
class PicturePile {
public:
PicturePile() {}
PicturePile(const PicturePile& other);
const IntSize& size() { return m_size; }
void clearPrerenders();
// used by PicturePileLayerContents
void draw(SkCanvas* canvas);
// Used by WebViewCore
void invalidate(const IntRect& dirtyRect);
void setSize(const IntSize& size);
void updatePicturesIfNeeded(PicturePainter* painter);
void reset();
SkRegion& dirtyRegion() { return m_dirtyRegion; }
PrerenderedInval* prerenderedInvalForArea(const IntRect& area);
// UI-side methods used to check content, after construction/updates are complete
float maxZoomScale() const;
bool isEmpty() const;
private:
void applyWebkitInvals();
void updatePicture(PicturePainter* painter, PictureContainer& container);
Picture* recordPicture(PicturePainter* painter, PictureContainer& container);
void appendToPile(const IntRect& inval, const IntRect& originalInval = IntRect());
void drawWithClipRecursive(SkCanvas* canvas, int index);
void drawPicture(SkCanvas* canvas, PictureContainer& pc);
IntSize m_size;
Vector<PictureContainer> m_pile;
Vector<IntRect> m_webkitInvals;
SkRegion m_dirtyRegion;
};
} // namespace android
#endif // PicturePile_h
|
