blob: 9661cab4584dbfcd11fd1de303a4e854bdf45a1c (
plain)
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
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef widget_windows_CompositorWidgetParent_h
#define widget_windows_CompositorWidgetParent_h
#include "CompositorWidget.h"
#include "gfxASurface.h"
#include "mozilla/gfx/CriticalSection.h"
#include "mozilla/gfx/Point.h"
#include "nsIWidget.h"
class nsWindow;
namespace mozilla {
namespace widget {
class CompositorWidgetDelegate
{
public:
// Callbacks for nsWindow.
virtual void EnterPresentLock() = 0;
virtual void LeavePresentLock() = 0;
virtual void OnDestroyWindow() = 0;
// Transparency handling.
virtual void UpdateTransparency(nsTransparencyMode aMode) = 0;
virtual void ClearTransparentWindow() = 0;
// If in-process and using software rendering, return the backing transparent
// DC.
virtual HDC GetTransparentDC() const = 0;
};
// This is the Windows-specific implementation of CompositorWidget. For
// the most part it only requires an HWND, however it maintains extra state
// for transparent windows, as well as for synchronizing WM_SETTEXT messages
// with the compositor.
class WinCompositorWidget
: public CompositorWidget,
public CompositorWidgetDelegate
{
public:
WinCompositorWidget(const CompositorWidgetInitData& aInitData);
bool PreRender(WidgetRenderingContext*) override;
void PostRender(WidgetRenderingContext*) override;
already_AddRefed<gfx::DrawTarget> StartRemoteDrawing() override;
void EndRemoteDrawing() override;
bool NeedsToDeferEndRemoteDrawing() override;
LayoutDeviceIntSize GetClientSize() override;
already_AddRefed<gfx::DrawTarget> GetBackBufferDrawTarget(gfx::DrawTarget* aScreenTarget,
const LayoutDeviceIntRect& aRect,
const LayoutDeviceIntRect& aClearRect) override;
already_AddRefed<gfx::SourceSurface> EndBackBufferDrawing() override;
bool InitCompositor(layers::Compositor* aCompositor) override;
uintptr_t GetWidgetKey() override;
WinCompositorWidget* AsWindows() override {
return this;
}
CompositorWidgetDelegate* AsDelegate() override {
return this;
}
// CompositorWidgetDelegate overrides.
void EnterPresentLock() override;
void LeavePresentLock() override;
void OnDestroyWindow() override;
void UpdateTransparency(nsTransparencyMode aMode) override;
void ClearTransparentWindow() override;
bool RedrawTransparentWindow();
// Ensure that a transparent surface exists, then return it.
RefPtr<gfxASurface> EnsureTransparentSurface();
HDC GetTransparentDC() const override {
return mMemoryDC;
}
HWND GetHwnd() const {
return mWnd;
}
private:
HDC GetWindowSurface();
void FreeWindowSurface(HDC dc);
void CreateTransparentSurface(const gfx::IntSize& aSize);
private:
uintptr_t mWidgetKey;
HWND mWnd;
gfx::CriticalSection mPresentLock;
// Transparency handling.
nsTransparencyMode mTransparencyMode;
RefPtr<gfxASurface> mTransparentSurface;
HDC mMemoryDC;
HDC mCompositeDC;
// Locked back buffer of BasicCompositor
uint8_t* mLockedBackBufferData;
bool mNotDeferEndRemoteDrawing;
};
} // namespace widget
} // namespace mozilla
#endif // widget_windows_CompositorWidgetParent_h
|
