aboutsummaryrefslogtreecommitdiff
path: root/sway/config/output.c
blob: cc5f29db46c580ccd6a6a08db463ff1346f82c1b (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
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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
#define _POSIX_C_SOURCE 200809L
#include <assert.h>
#include <stdbool.h>
#include <string.h>
#include <signal.h>
#include <sys/wait.h>
#include <unistd.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_output_layout.h>
#include "sway/config.h"
#include "sway/output.h"
#include "sway/tree/root.h"
#include "log.h"

int output_name_cmp(const void *item, const void *data) {
	const struct output_config *output = item;
	const char *name = data;

	return strcmp(output->name, name);
}

void output_get_identifier(char *identifier, size_t len,
		struct sway_output *output) {
	struct wlr_output *wlr_output = output->wlr_output;
	snprintf(identifier, len, "%s %s %s", wlr_output->make, wlr_output->model,
		wlr_output->serial);
}

struct output_config *new_output_config(const char *name) {
	struct output_config *oc = calloc(1, sizeof(struct output_config));
	if (oc == NULL) {
		return NULL;
	}
	oc->name = strdup(name);
	if (oc->name == NULL) {
		free(oc);
		return NULL;
	}
	oc->enabled = -1;
	oc->width = oc->height = -1;
	oc->refresh_rate = -1;
	oc->x = oc->y = -1;
	oc->scale = -1;
	oc->transform = -1;
	return oc;
}

void merge_output_config(struct output_config *dst, struct output_config *src) {
	if (src->enabled != -1) {
		dst->enabled = src->enabled;
	}
	if (src->width != -1) {
		dst->width = src->width;
	}
	if (src->height != -1) {
		dst->height = src->height;
	}
	if (src->x != -1) {
		dst->x = src->x;
	}
	if (src->y != -1) {
		dst->y = src->y;
	}
	if (src->scale != -1) {
		dst->scale = src->scale;
	}
	if (src->refresh_rate != -1) {
		dst->refresh_rate = src->refresh_rate;
	}
	if (src->transform != -1) {
		dst->transform = src->transform;
	}
	if (src->background) {
		free(dst->background);
		dst->background = strdup(src->background);
	}
	if (src->background_option) {
		free(dst->background_option);
		dst->background_option = strdup(src->background_option);
	}
	if (src->background_fallback) {
		free(dst->background_fallback);
		dst->background_fallback = strdup(src->background_fallback);
	}
	if (src->dpms_state != 0) {
		dst->dpms_state = src->dpms_state;
	}
}

static void merge_wildcard_on_all(struct output_config *wildcard) {
	for (int i = 0; i < config->output_configs->length; i++) {
		struct output_config *oc = config->output_configs->items[i];
		if (strcmp(wildcard->name, oc->name) != 0) {
			sway_log(SWAY_DEBUG, "Merging output * config on %s", oc->name);
			merge_output_config(oc, wildcard);
		}
	}
}

struct output_config *store_output_config(struct output_config *oc) {
	bool wildcard = strcmp(oc->name, "*") == 0;
	if (wildcard) {
		merge_wildcard_on_all(oc);
	}

	int i = list_seq_find(config->output_configs, output_name_cmp, oc->name);
	if (i >= 0) {
		sway_log(SWAY_DEBUG, "Merging on top of existing output config");
		struct output_config *current = config->output_configs->items[i];
		merge_output_config(current, oc);
		free_output_config(oc);
		oc = current;
	} else if (!wildcard) {
		sway_log(SWAY_DEBUG, "Adding non-wildcard output config");
		i = list_seq_find(config->output_configs, output_name_cmp, "*");
		if (i >= 0) {
			sway_log(SWAY_DEBUG, "Merging on top of output * config");
			struct output_config *current = new_output_config(oc->name);
			merge_output_config(current, config->output_configs->items[i]);
			merge_output_config(current, oc);
			free_output_config(oc);
			oc = current;
		}
		list_add(config->output_configs, oc);
	} else {
		// New wildcard config. Just add it
		sway_log(SWAY_DEBUG, "Adding output * config");
		list_add(config->output_configs, oc);
	}

	sway_log(SWAY_DEBUG, "Config stored for output %s (enabled: %d) (%dx%d@%fHz "
		"position %d,%d scale %f transform %d) (bg %s %s) (dpms %d)",
		oc->name, oc->enabled, oc->width, oc->height, oc->refresh_rate,
		oc->x, oc->y, oc->scale, oc->transform, oc->background,
		oc->background_option, oc->dpms_state);

	return oc;
}

static bool set_mode(struct wlr_output *output, int width, int height,
		float refresh_rate) {
	int mhz = (int)(refresh_rate * 1000);
	if (wl_list_empty(&output->modes)) {
		sway_log(SWAY_DEBUG, "Assigning custom mode to %s", output->name);
		return wlr_output_set_custom_mode(output, width, height, mhz);
	}

	struct wlr_output_mode *mode, *best = NULL;
	wl_list_for_each(mode, &output->modes, link) {
		if (mode->width == width && mode->height == height) {
			if (mode->refresh == mhz) {
				best = mode;
				break;
			}
			best = mode;
		}
	}
	if (!best) {
		sway_log(SWAY_ERROR, "Configured mode for %s not available", output->name);
		sway_log(SWAY_INFO, "Picking default mode instead");
		best = wl_container_of(output->modes.prev, mode, link);
	} else {
		sway_log(SWAY_DEBUG, "Assigning configured mode to %s", output->name);
	}
	return wlr_output_set_mode(output, best);
}

void terminate_swaybg(pid_t pid) {
	int ret = kill(pid, SIGTERM);
	if (ret != 0) {
		sway_log(SWAY_ERROR, "Unable to terminate swaybg [pid: %d]", pid);
	} else {
		int status;
		waitpid(pid, &status, 0);
	}
}

bool apply_output_config(struct output_config *oc, struct sway_output *output) {
	if (output == root->noop_output) {
		return false;
	}

	struct wlr_output *wlr_output = output->wlr_output;

	if (oc && !oc->enabled) {
		// Output is configured to be disabled
		if (output->enabled) {
			output_disable(output);
			wlr_output_layout_remove(root->output_layout, wlr_output);
		}
		wlr_output_enable(wlr_output, false);
		return true;
	} else if (!output->enabled) {
		// Output is not enabled. Enable it, output_enable will call us again.
		if (!oc || oc->dpms_state != DPMS_OFF) {
			wlr_output_enable(wlr_output, true);
		}
		output_enable(output, oc);
		return true;
	}

	bool modeset_success;
	if (oc && oc->width > 0 && oc->height > 0) {
		sway_log(SWAY_DEBUG, "Set %s mode to %dx%d (%f GHz)", oc->name, oc->width,
			oc->height, oc->refresh_rate);
		modeset_success =
			set_mode(wlr_output, oc->width, oc->height, oc->refresh_rate);
	} else if (!wl_list_empty(&wlr_output->modes)) {
		struct wlr_output_mode *mode =
			wl_container_of(wlr_output->modes.prev, mode, link);
		modeset_success = wlr_output_set_mode(wlr_output, mode);
	} else {
		// Output doesn't support modes
		modeset_success = true;
	}
	if (!modeset_success) {
		// Failed to modeset, maybe the output is missing a CRTC. Leave the
		// output disabled for now and try again when the output gets the mode
		// we asked for.
		sway_log(SWAY_ERROR, "Failed to modeset output %s", wlr_output->name);
		return false;
	}

	if (oc && oc->scale > 0) {
		sway_log(SWAY_DEBUG, "Set %s scale to %f", oc->name, oc->scale);
		wlr_output_set_scale(wlr_output, oc->scale);
	}
	if (oc && oc->transform >= 0) {
		sway_log(SWAY_DEBUG, "Set %s transform to %d", oc->name, oc->transform);
		wlr_output_set_transform(wlr_output, oc->transform);
	}

	// Find position for it
	if (oc && (oc->x != -1 || oc->y != -1)) {
		sway_log(SWAY_DEBUG, "Set %s position to %d, %d", oc->name, oc->x, oc->y);
		wlr_output_layout_add(root->output_layout, wlr_output, oc->x, oc->y);
	} else {
		wlr_output_layout_add_auto(root->output_layout, wlr_output);
	}

	if (output->bg_pid != 0) {
		terminate_swaybg(output->bg_pid);
	}
	if (oc && oc->background && config->swaybg_command) {
		sway_log(SWAY_DEBUG, "Setting background for output %s to %s",
			wlr_output->name, oc->background);

		char *const cmd[] = {
			config->swaybg_command,
			wlr_output->name,
			oc->background,
			oc->background_option,
			oc->background_fallback ? oc->background_fallback : NULL,
			NULL,
		};

		output->bg_pid = fork();
		if (output->bg_pid < 0) {
			sway_log_errno(SWAY_ERROR, "fork failed");
		} else if (output->bg_pid == 0) {
			execvp(cmd[0], cmd);
			sway_log_errno(SWAY_ERROR, "Failed to execute swaybg");
		}
	}

	if (oc) {
		switch (oc->dpms_state) {
		case DPMS_ON:
			sway_log(SWAY_DEBUG, "Turning on screen");
			wlr_output_enable(wlr_output, true);
			break;
		case DPMS_OFF:
			sway_log(SWAY_DEBUG, "Turning off screen");
			wlr_output_enable(wlr_output, false);
			break;
		case DPMS_IGNORE:
			break;
		}
	}

	return true;
}

static void default_output_config(struct output_config *oc,
		struct wlr_output *wlr_output) {
	oc->enabled = 1;
	if (!wl_list_empty(&wlr_output->modes)) {
		struct wlr_output_mode *mode =
			wl_container_of(wlr_output->modes.prev, mode, link);
		oc->width = mode->width;
		oc->height = mode->height;
		oc->refresh_rate = mode->refresh;
	}
	oc->x = oc->y = -1;
	oc->scale = 1;
	oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
}

static struct output_config *get_output_config(char *identifier,
		struct sway_output *sway_output) {
	const char *name = sway_output->wlr_output->name;
	struct output_config *oc_name = NULL;
	int i = list_seq_find(config->output_configs, output_name_cmp, name);
	if (i >= 0) {
		oc_name = config->output_configs->items[i];
	}

	struct output_config *oc_id = NULL;
	i = list_seq_find(config->output_configs, output_name_cmp, identifier);
	if (i >= 0) {
		oc_id = config->output_configs->items[i];
	}

	struct output_config *result = result = new_output_config("temp");
	if (config->reloading) {
		default_output_config(result, sway_output->wlr_output);
	}
	if (oc_name && oc_id) {
		// Generate a config named `<identifier> on <name>` which contains a
		// merged copy of the identifier on name. This will make sure that both
		// identifier and name configs are respected, with identifier getting
		// priority
		size_t length = snprintf(NULL, 0, "%s on %s", identifier, name) + 1;
		char *temp = malloc(length);
		snprintf(temp, length, "%s on %s", identifier, name);

		free(result->name);
		result->name = temp;
		merge_output_config(result, oc_name);
		merge_output_config(result, oc_id);

		sway_log(SWAY_DEBUG, "Generated output config \"%s\" (enabled: %d)"
			" (%dx%d@%fHz position %d,%d scale %f transform %d) (bg %s %s)"
			" (dpms %d)", result->name, result->enabled, result->width,
			result->height, result->refresh_rate, result->x, result->y,
			result->scale, result->transform, result->background,
			result->background_option, result->dpms_state);
	} else if (oc_name) {
		// No identifier config, just return a copy of the name config
		free(result->name);
		result->name = strdup(name);
		merge_output_config(result, oc_name);
	} else if (oc_id) {
		// No name config, just return a copy of the identifier config
		free(result->name);
		result->name = strdup(identifier);
		merge_output_config(result, oc_id);
	} else if (config->reloading) {
		// Neither config exists, but we need to reset the output so create a
		// default config for the output and if a wildcard config exists, merge
		// that on top
		free(result->name);
		result->name = strdup("*");
		i = list_seq_find(config->output_configs, output_name_cmp, "*");
		if (i >= 0) {
			merge_output_config(result, config->output_configs->items[i]);
		}
	} else {
		free_output_config(result);
		result = NULL;
	}

	return result;
}

void apply_output_config_to_outputs(struct output_config *oc) {
	// Try to find the output container and apply configuration now. If
	// this is during startup then there will be no container and config
	// will be applied during normal "new output" event from wlroots.
	bool wildcard = strcmp(oc->name, "*") == 0;
	char id[128];
	struct sway_output *sway_output;
	wl_list_for_each(sway_output, &root->all_outputs, link) {
		char *name = sway_output->wlr_output->name;
		output_get_identifier(id, sizeof(id), sway_output);
		if (wildcard || !strcmp(name, oc->name) || !strcmp(id, oc->name)) {
			struct output_config *current = new_output_config(oc->name);
			merge_output_config(current, oc);
			if (wildcard) {
				struct output_config *tmp = get_output_config(id, sway_output);
				if (tmp) {
					free_output_config(current);
					current = tmp;
				}
			}
			apply_output_config(current, sway_output);
			free_output_config(current);

			if (!wildcard) {
				// Stop looking if the output config isn't applicable to all
				// outputs
				break;
			}
		}
	}
}

void free_output_config(struct output_config *oc) {
	if (!oc) {
		return;
	}
	free(oc->name);
	free(oc->background);
	free(oc->background_option);
	free(oc->background_fallback);
	free(oc);
}