1 //
2 // Copyright 2022 The ANGLE Project Authors. All rights reserved.
3 // Use of this source code is governed by a BSD-style license that can be
4 // found in the LICENSE file.
5 //
6
7 // WaylandWindow.cpp: Implementation of OSWindow for Wayland
8
9 #include "util/linux/wayland/WaylandWindow.h"
10
WaylandWindow()11 WaylandWindow::WaylandWindow()
12 : mDisplay{nullptr}, mCompositor{nullptr}, mSurface{nullptr}, mWindow{nullptr}
13 {}
14
~WaylandWindow()15 WaylandWindow::~WaylandWindow()
16 {
17 destroy();
18 }
19
RegistryHandleGlobal(void * data,struct wl_registry * registry,uint32_t name,const char * interface,uint32_t version)20 void WaylandWindow::RegistryHandleGlobal(void *data,
21 struct wl_registry *registry,
22 uint32_t name,
23 const char *interface,
24 uint32_t version)
25 {
26 WaylandWindow *vc = reinterpret_cast<WaylandWindow *>(data);
27
28 if (strcmp(interface, "wl_compositor") == 0)
29 {
30 void *compositor = wl_registry_bind(registry, name, &wl_compositor_interface, 1);
31 vc->mCompositor = reinterpret_cast<wl_compositor *>(compositor);
32 }
33 }
34
RegistryHandleGlobalRemove(void * data,struct wl_registry * registry,uint32_t name)35 void WaylandWindow::RegistryHandleGlobalRemove(void *data,
36 struct wl_registry *registry,
37 uint32_t name)
38 {}
39
40 const struct wl_registry_listener WaylandWindow::registryListener = {
41 WaylandWindow::RegistryHandleGlobal, WaylandWindow::RegistryHandleGlobalRemove};
42
initializeImpl(const std::string & name,int width,int height)43 bool WaylandWindow::initializeImpl(const std::string &name, int width, int height)
44 {
45 destroy();
46
47 if (!mDisplay)
48 {
49 mDisplay = wl_display_connect(nullptr);
50 if (!mDisplay)
51 {
52 return false;
53 }
54 }
55
56 // Not get a window
57 struct wl_registry *registry = wl_display_get_registry(mDisplay);
58 wl_registry_add_listener(registry, ®istryListener, this);
59
60 // Round-trip to get globals
61 wl_display_roundtrip(mDisplay);
62 if (!mCompositor)
63 {
64 return false;
65 }
66
67 // We don't need this anymore
68 wl_registry_destroy(registry);
69
70 mSurface = wl_compositor_create_surface(mCompositor);
71 if (!mSurface)
72 {
73 return false;
74 }
75
76 mWindow = wl_egl_window_create(mSurface, width, height);
77 if (!mWindow)
78 {
79 return false;
80 }
81
82 fds[0] = {wl_display_get_fd(mDisplay), POLLIN, 0};
83
84 mY = 0;
85 mX = 0;
86 mWidth = width;
87 mHeight = height;
88
89 return true;
90 }
91
disableErrorMessageDialog()92 void WaylandWindow::disableErrorMessageDialog() {}
93
destroy()94 void WaylandWindow::destroy()
95 {
96 if (mWindow)
97 {
98 wl_egl_window_destroy(mWindow);
99 mWindow = nullptr;
100 }
101
102 if (mSurface)
103 {
104 wl_surface_destroy(mSurface);
105 mSurface = nullptr;
106 }
107
108 if (mCompositor)
109 {
110 wl_compositor_destroy(mCompositor);
111 mCompositor = nullptr;
112 }
113 }
114
resetNativeWindow()115 void WaylandWindow::resetNativeWindow() {}
116
getNativeWindow() const117 EGLNativeWindowType WaylandWindow::getNativeWindow() const
118 {
119 return reinterpret_cast<EGLNativeWindowType>(mWindow);
120 }
121
getNativeDisplay() const122 EGLNativeDisplayType WaylandWindow::getNativeDisplay() const
123 {
124 return reinterpret_cast<EGLNativeDisplayType>(mDisplay);
125 }
126
messageLoop()127 void WaylandWindow::messageLoop()
128 {
129 while (wl_display_prepare_read(mDisplay) != 0)
130 wl_display_dispatch_pending(mDisplay);
131 if (wl_display_flush(mDisplay) < 0 && errno != EAGAIN)
132 {
133 wl_display_cancel_read(mDisplay);
134 return;
135 }
136 if (poll(fds, 1, 0) > 0)
137 {
138 wl_display_read_events(mDisplay);
139 wl_display_dispatch_pending(mDisplay);
140 }
141 else
142 {
143 wl_display_cancel_read(mDisplay);
144 }
145 }
146
setMousePosition(int x,int y)147 void WaylandWindow::setMousePosition(int x, int y) {}
148
setOrientation(int width,int height)149 bool WaylandWindow::setOrientation(int width, int height)
150 {
151 return true;
152 }
153
setPosition(int x,int y)154 bool WaylandWindow::setPosition(int x, int y)
155 {
156 return true;
157 }
158
resize(int width,int height)159 bool WaylandWindow::resize(int width, int height)
160 {
161 wl_egl_window_resize(mWindow, width, height, 0, 0);
162
163 mWidth = width;
164 mHeight = height;
165
166 return true;
167 }
168
setVisible(bool isVisible)169 void WaylandWindow::setVisible(bool isVisible) {}
170
signalTestEvent()171 void WaylandWindow::signalTestEvent() {}
172
IsWaylandWindowAvailable()173 bool IsWaylandWindowAvailable()
174 {
175 wl_display *display = wl_display_connect(nullptr);
176 if (!display)
177 {
178 return false;
179 }
180 wl_display_disconnect(display);
181 return true;
182 }
183