1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 * This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5
6 #include "gfxWindowsSurface.h"
7 #include "gfxContext.h"
8 #include "gfxPlatform.h"
9 #include "mozilla/gfx/2D.h"
10 #include "mozilla/gfx/HelpersCairo.h"
11 #include "mozilla/gfx/Logging.h"
12
13 #include "cairo.h"
14 #include "cairo-win32.h"
15
16 #include "nsString.h"
17
gfxWindowsSurface(HDC dc,uint32_t flags)18 gfxWindowsSurface::gfxWindowsSurface(HDC dc, uint32_t flags) :
19 mOwnsDC(false), mDC(dc), mWnd(nullptr)
20 {
21 InitWithDC(flags);
22 }
23
gfxWindowsSurface(IDirect3DSurface9 * surface,uint32_t flags)24 gfxWindowsSurface::gfxWindowsSurface(IDirect3DSurface9 *surface, uint32_t flags) :
25 mOwnsDC(false), mDC(0), mWnd(nullptr)
26 {
27 cairo_surface_t *surf = cairo_win32_surface_create_with_d3dsurface9(surface);
28 Init(surf);
29 }
30
31
32 void
MakeInvalid(mozilla::gfx::IntSize & size)33 gfxWindowsSurface::MakeInvalid(mozilla::gfx::IntSize& size)
34 {
35 size = mozilla::gfx::IntSize(-1, -1);
36 }
37
gfxWindowsSurface(const mozilla::gfx::IntSize & realSize,gfxImageFormat imageFormat)38 gfxWindowsSurface::gfxWindowsSurface(const mozilla::gfx::IntSize& realSize, gfxImageFormat imageFormat) :
39 mOwnsDC(false), mWnd(nullptr)
40 {
41 mozilla::gfx::IntSize size(realSize);
42 if (!mozilla::gfx::Factory::CheckSurfaceSize(size))
43 MakeInvalid(size);
44
45 cairo_format_t cformat = GfxFormatToCairoFormat(imageFormat);
46 cairo_surface_t *surf =
47 cairo_win32_surface_create_with_dib(cformat, size.width, size.height);
48
49 Init(surf);
50
51 if (CairoStatus() == CAIRO_STATUS_SUCCESS) {
52 mDC = cairo_win32_surface_get_dc(CairoSurface());
53 RecordMemoryUsed(size.width * size.height * 4 + sizeof(gfxWindowsSurface));
54 } else {
55 mDC = nullptr;
56 }
57 }
58
gfxWindowsSurface(cairo_surface_t * csurf)59 gfxWindowsSurface::gfxWindowsSurface(cairo_surface_t *csurf) :
60 mOwnsDC(false), mWnd(nullptr)
61 {
62 if (cairo_surface_status(csurf) == 0)
63 mDC = cairo_win32_surface_get_dc(csurf);
64 else
65 mDC = nullptr;
66
67 MOZ_ASSERT(cairo_surface_get_type(csurf) != CAIRO_SURFACE_TYPE_WIN32_PRINTING);
68
69 Init(csurf, true);
70 }
71
72 void
InitWithDC(uint32_t flags)73 gfxWindowsSurface::InitWithDC(uint32_t flags)
74 {
75 if (flags & FLAG_IS_TRANSPARENT) {
76 Init(cairo_win32_surface_create_with_alpha(mDC));
77 } else {
78 Init(cairo_win32_surface_create(mDC));
79 }
80 }
81
82 already_AddRefed<gfxASurface>
CreateSimilarSurface(gfxContentType aContent,const mozilla::gfx::IntSize & aSize)83 gfxWindowsSurface::CreateSimilarSurface(gfxContentType aContent,
84 const mozilla::gfx::IntSize& aSize)
85 {
86 if (!mSurface || !mSurfaceValid) {
87 return nullptr;
88 }
89
90 cairo_surface_t *surface;
91 if (GetContentType() == gfxContentType::COLOR_ALPHA) {
92 // When creating a similar surface to a transparent surface, ensure
93 // the new surface uses a DIB. cairo_surface_create_similar won't
94 // use a DIB for a gfxContentType::COLOR surface if this surface doesn't
95 // have a DIB (e.g. if we're a transparent window surface). But
96 // we need a DIB to perform well if the new surface is composited into
97 // a surface that's the result of create_similar(gfxContentType::COLOR_ALPHA)
98 // (e.g. a backbuffer for the window) --- that new surface *would*
99 // have a DIB.
100 gfxImageFormat gformat =
101 gfxPlatform::GetPlatform()->OptimalFormatForContent(aContent);
102 cairo_format_t cformat = GfxFormatToCairoFormat(gformat);
103 surface = cairo_win32_surface_create_with_dib(cformat, aSize.width,
104 aSize.height);
105 } else {
106 surface =
107 cairo_surface_create_similar(mSurface, (cairo_content_t)(int)aContent,
108 aSize.width, aSize.height);
109 }
110
111 if (cairo_surface_status(surface)) {
112 cairo_surface_destroy(surface);
113 return nullptr;
114 }
115
116 RefPtr<gfxASurface> result = Wrap(surface, aSize);
117 cairo_surface_destroy(surface);
118 return result.forget();
119 }
120
~gfxWindowsSurface()121 gfxWindowsSurface::~gfxWindowsSurface()
122 {
123 if (mOwnsDC) {
124 if (mWnd)
125 ::ReleaseDC(mWnd, mDC);
126 else
127 ::DeleteDC(mDC);
128 }
129 }
130
131 HDC
GetDC()132 gfxWindowsSurface::GetDC()
133 {
134 return cairo_win32_surface_get_dc (CairoSurface());
135 }
136
137 already_AddRefed<gfxImageSurface>
GetAsImageSurface()138 gfxWindowsSurface::GetAsImageSurface()
139 {
140 if (!mSurfaceValid) {
141 NS_WARNING ("GetImageSurface on an invalid (null) surface; who's calling this without checking for surface errors?");
142 return nullptr;
143 }
144
145 NS_ASSERTION(CairoSurface() != nullptr, "CairoSurface() shouldn't be nullptr when mSurfaceValid is TRUE!");
146
147 cairo_surface_t *isurf = cairo_win32_surface_get_image(CairoSurface());
148 if (!isurf)
149 return nullptr;
150
151 RefPtr<gfxImageSurface> result = gfxASurface::Wrap(isurf).downcast<gfxImageSurface>();
152 result->SetOpaqueRect(GetOpaqueRect());
153
154 return result.forget();
155 }
156
157 const mozilla::gfx::IntSize
GetSize() const158 gfxWindowsSurface::GetSize() const
159 {
160 if (!mSurfaceValid) {
161 NS_WARNING ("GetImageSurface on an invalid (null) surface; who's calling this without checking for surface errors?");
162 return mozilla::gfx::IntSize(-1, -1);
163 }
164
165 NS_ASSERTION(mSurface != nullptr, "CairoSurface() shouldn't be nullptr when mSurfaceValid is TRUE!");
166
167 return mozilla::gfx::IntSize(cairo_win32_surface_get_width(mSurface),
168 cairo_win32_surface_get_height(mSurface));
169 }
170