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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
const std = @import("std");
const mem = std.mem;
const posix = std.posix;
const wayland = @import("wayland");
const wl = wayland.client.wl;
const xdg = wayland.client.xdg;
const RegistryContext = struct {
shm: ?*wl.Shm,
compositor: ?*wl.Compositor,
wm_base: ?*xdg.WmBase,
};
const Window = struct {
shm: *wl.Shm,
wl_surface: *wl.Surface,
width: i32,
height: i32,
offset: f32,
last_frame: u32,
run: bool,
pub fn drawFrame(state: *Window) !*wl.Buffer {
const stride = state.width * 4;
const size = stride * state.height;
const fd = try posix.memfd_create("zigway", 0);
defer posix.close(fd);
try posix.ftruncate(fd, @intCast(size));
var data = try posix.mmap(
null,
@intCast(size),
posix.PROT.READ | posix.PROT.WRITE,
.{ .TYPE = .SHARED },
fd,
0,
);
defer posix.munmap(data);
const pool = try state.shm.createPool(fd, size);
defer pool.destroy();
const buffer = try pool.createBuffer(0, state.width, state.height, stride, .argb8888);
const canvas: *[]u32 = @ptrCast(&data);
const box_side = 12;
var offset: u32 = @intFromFloat(state.offset);
offset = @rem(offset, box_side);
const height: u32 = @intCast(state.height);
const width: u32 = @intCast(state.width);
for (0..height) |y| {
for (0..width) |x| {
if ((x + offset + (y + offset) / box_side * box_side) % (box_side * 2) < box_side) {
canvas.*[y * width + x] = 0xFF0E0E0E;
} else {
canvas.*[y * width + x] = 0xFF2F2F2F;
}
}
}
buffer.setListener(?*void, bufferListener, null);
return buffer;
}
};
pub fn main() !void {
const display = try wl.Display.connect(null);
defer display.disconnect();
const registry = try display.getRegistry();
var ctx = RegistryContext{
.shm = null,
.compositor = null,
.wm_base = null,
};
registry.setListener(*RegistryContext, registryListener, &ctx);
if (display.roundtrip() != .SUCCESS) return error.RoundTripFailed;
const compositor = ctx.compositor orelse return error.NoWlCompositor;
const wm_base = ctx.wm_base orelse return error.NoXdgWmBase;
var state = Window{
.shm = ctx.shm orelse return error.NoWlShm,
.wl_surface = try compositor.createSurface(),
.width = 480,
.height = 360,
.offset = 0.0,
.last_frame = 0,
.run = true,
};
defer state.wl_surface.destroy();
const xdg_surface = try wm_base.getXdgSurface(state.wl_surface);
defer xdg_surface.destroy();
const xdg_toplevel = try xdg_surface.getToplevel();
defer xdg_toplevel.destroy();
xdg_surface.setListener(*Window, xdgSurfaceListener, &state);
xdg_toplevel.setListener(*Window, xdgToplevelListener, &state);
wm_base.setListener(?*void, xdgWmBaseListener, null);
xdg_toplevel.setTitle("Hello, wayland!");
state.wl_surface.commit();
const wl_cb = try state.wl_surface.frame();
wl_cb.setListener(*Window, frameListener, &state);
while (state.run) {
if (display.dispatch() != .SUCCESS) return error.DispatchFailed;
}
}
fn registryListener(registry: *wl.Registry, event: wl.Registry.Event, ctx: *RegistryContext) void {
switch (event) {
.global => |global| {
std.debug.print("inteface: {s}, version {}, name {}\n", .{
global.interface,
global.version,
global.name,
});
if (mem.orderZ(u8, global.interface, wl.Compositor.getInterface().name) == .eq) {
ctx.compositor = registry.bind(global.name, wl.Compositor, 6) catch return;
} else if (mem.orderZ(u8, global.interface, wl.Shm.getInterface().name) == .eq) {
ctx.shm = registry.bind(global.name, wl.Shm, 1) catch return;
} else if (mem.orderZ(u8, global.interface, xdg.WmBase.getInterface().name) == .eq) {
ctx.wm_base = registry.bind(global.name, xdg.WmBase, 2) catch return;
}
},
.global_remove => {},
}
}
fn xdgSurfaceListener(xdg_surface: *xdg.Surface, event: xdg.Surface.Event, state: *Window) void {
switch (event) {
.configure => |configure| {
xdg_surface.ackConfigure(configure.serial);
brk: {
const buffer = state.drawFrame() catch |err| {
std.debug.print("error drawing frame {}\n", .{err});
break :brk;
};
state.wl_surface.attach(buffer, 0, 0);
}
state.wl_surface.commit();
},
}
}
fn xdgToplevelListener(_: *xdg.Toplevel, event: xdg.Toplevel.Event, state: *Window) void {
switch (event) {
.configure => |configure| {
state.height = if (configure.height != 0) configure.height else state.height;
state.width = if (configure.width != 0) configure.width else state.width;
},
.close => state.run = false,
}
}
fn xdgWmBaseListener(wm_base: *xdg.WmBase, event: xdg.WmBase.Event, _: ?*void) void {
switch (event) {
.ping => |ping| {
wm_base.pong(ping.serial);
},
}
}
fn bufferListener(buffer: *wl.Buffer, event: wl.Buffer.Event, _: ?*void) void {
switch (event) {
.release => buffer.destroy(),
}
}
fn frameListener(wl_cb: *wl.Callback, event: wl.Callback.Event, state: *Window) void {
switch (event) {
.done => |done| {
wl_cb.destroy();
const new_cb = state.wl_surface.frame() catch |err| {
std.debug.print("unable to get frame {}\n", .{err});
state.run = false;
return;
};
new_cb.setListener(*Window, frameListener, state);
if (state.last_frame != 0) {
const elapsed: f32 = @floatFromInt(done.callback_data -% state.last_frame);
state.offset += elapsed / 1000.0 * 48.0;
}
defer state.last_frame = done.callback_data;
const buffer = state.drawFrame() catch |err| {
std.debug.print("error drawing frame {}\n", .{err});
return;
};
state.wl_surface.attach(buffer, 0, 0);
state.wl_surface.damageBuffer(0, 0, std.math.maxInt(i32), std.math.maxInt(i32));
state.wl_surface.commit();
},
}
}
|
