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
|
#include <assert.h>
#include <stdlib.h>
#include <wlr/interfaces/wlr_output.h>
#include <wlr/util/log.h>
#include "backend/x11.h"
#include "util/signal.h"
static int signal_frame(void *data) {
struct wlr_x11_output *output = data;
wlr_output_send_frame(&output->wlr_output);
wl_event_source_timer_update(output->frame_timer, output->frame_delay);
return 0;
}
static void parse_xcb_setup(struct wlr_output *output, xcb_connection_t *xcb_conn) {
const xcb_setup_t *xcb_setup = xcb_get_setup(xcb_conn);
snprintf(output->make, sizeof(output->make), "%.*s",
xcb_setup_vendor_length(xcb_setup),
xcb_setup_vendor(xcb_setup));
snprintf(output->model, sizeof(output->model), "%"PRIu16".%"PRIu16,
xcb_setup->protocol_major_version,
xcb_setup->protocol_minor_version);
}
static bool output_set_custom_mode(struct wlr_output *wlr_output, int32_t width,
int32_t height, int32_t refresh) {
struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
struct wlr_x11_backend *x11 = output->x11;
wlr_output_update_custom_mode(&output->wlr_output, wlr_output->width,
wlr_output->height, refresh);
output->frame_delay = 1000000 / refresh;
const uint32_t values[] = { width, height };
xcb_configure_window(x11->xcb_conn, output->win,
XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, values);
return true;
}
static void output_transform(struct wlr_output *wlr_output,
enum wl_output_transform transform) {
struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
output->wlr_output.transform = transform;
}
static void output_destroy(struct wlr_output *wlr_output) {
struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
struct wlr_x11_backend *x11 = output->x11;
wl_list_remove(&output->link);
wl_event_source_remove(output->frame_timer);
eglDestroySurface(x11->egl.display, output->surf);
xcb_destroy_window(x11->xcb_conn, output->win);
xcb_flush(x11->xcb_conn);
free(output);
}
static bool output_make_current(struct wlr_output *wlr_output, int *buffer_age) {
struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
struct wlr_x11_backend *x11 = output->x11;
return wlr_egl_make_current(&x11->egl, output->surf, buffer_age);
}
static bool output_swap_buffers(struct wlr_output *wlr_output,
pixman_region32_t *damage) {
struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
struct wlr_x11_backend *x11 = output->x11;
return wlr_egl_swap_buffers(&x11->egl, output->surf, damage);
}
static const struct wlr_output_impl output_impl = {
.set_custom_mode = output_set_custom_mode,
.transform = output_transform,
.destroy = output_destroy,
.make_current = output_make_current,
.swap_buffers = output_swap_buffers,
};
struct wlr_output *wlr_x11_output_create(struct wlr_backend *backend) {
assert(wlr_backend_is_x11(backend));
struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
if (!x11->started) {
++x11->requested_outputs;
return NULL;
}
struct wlr_x11_output *output = calloc(1, sizeof(struct wlr_x11_output));
if (output == NULL) {
return NULL;
}
output->x11 = x11;
struct wlr_output *wlr_output = &output->wlr_output;
wlr_output_init(wlr_output, &x11->backend, &output_impl, x11->wl_display);
wlr_output->refresh = 60 * 1000000;
output->frame_delay = 16; // 60 Hz
snprintf(wlr_output->name, sizeof(wlr_output->name), "X11-%d",
wl_list_length(&x11->outputs) + 1);
parse_xcb_setup(wlr_output, x11->xcb_conn);
uint32_t mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
uint32_t values[2] = {
x11->screen->white_pixel,
XCB_EVENT_MASK_EXPOSURE |
XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_KEY_RELEASE |
XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE |
XCB_EVENT_MASK_POINTER_MOTION |
XCB_EVENT_MASK_STRUCTURE_NOTIFY
};
output->win = xcb_generate_id(x11->xcb_conn);
xcb_create_window(x11->xcb_conn, XCB_COPY_FROM_PARENT, output->win,
x11->screen->root, 0, 0, 1024, 768, 1, XCB_WINDOW_CLASS_INPUT_OUTPUT,
x11->screen->root_visual, mask, values);
output->surf = wlr_egl_create_surface(&x11->egl, &output->win);
if (!output->surf) {
wlr_log(L_ERROR, "Failed to create EGL surface");
free(output);
return NULL;
}
xcb_change_property(x11->xcb_conn, XCB_PROP_MODE_REPLACE, output->win,
x11->atoms.wm_protocols, XCB_ATOM_ATOM, 32, 1,
&x11->atoms.wm_delete_window);
char title[32];
if (snprintf(title, sizeof(title), "wlroots - %s", wlr_output->name)) {
xcb_change_property(x11->xcb_conn, XCB_PROP_MODE_REPLACE, output->win,
x11->atoms.net_wm_name, x11->atoms.utf8_string, 8,
strlen(title), title);
}
uint32_t cursor_values[] = { x11->cursor };
xcb_change_window_attributes(x11->xcb_conn, output->win, XCB_CW_CURSOR,
cursor_values);
xcb_map_window(x11->xcb_conn, output->win);
xcb_flush(x11->xcb_conn);
struct wl_event_loop *ev = wl_display_get_event_loop(x11->wl_display);
output->frame_timer = wl_event_loop_add_timer(ev, signal_frame, output);
wl_event_source_timer_update(output->frame_timer, output->frame_delay);
wlr_output_update_enabled(wlr_output, true);
wl_list_insert(&x11->outputs, &output->link);
wlr_signal_emit_safe(&x11->backend.events.new_output, wlr_output);
return wlr_output;
}
void x11_output_handle_configure_notify(struct wlr_x11_output *output,
xcb_configure_notify_event_t *ev) {
struct wlr_x11_backend *x11 = output->x11;
wlr_output_update_custom_mode(&output->wlr_output, ev->width,
ev->height, output->wlr_output.refresh);
// Move the pointer to its new location
xcb_query_pointer_cookie_t cookie =
xcb_query_pointer(x11->xcb_conn, output->win);
xcb_query_pointer_reply_t *pointer =
xcb_query_pointer_reply(x11->xcb_conn, cookie, NULL);
if (!pointer) {
return;
}
struct wlr_event_pointer_motion_absolute abs = {
.device = &x11->pointer_dev,
.time_msec = x11->time,
.x = (double)pointer->root_x / output->wlr_output.width,
.y = (double)pointer->root_y / output->wlr_output.height,
};
wlr_signal_emit_safe(&x11->pointer.events.motion_absolute, &abs);
free(pointer);
}
bool wlr_output_is_x11(struct wlr_output *wlr_output) {
return wlr_output->impl == &output_impl;
}
|
