chroma

public

Lightweight wallpaper daemon for Wayland

clone

ssh://git@git.notashelf.dev:33/notashelf/chroma.git

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "../include/chroma.h"

// Registry listener
static void registry_global(void *data, struct wl_registry *registry,
                            uint32_t id, const char *interface,
                            uint32_t version) {
  chroma_state_t *state = (chroma_state_t *)data;

  chroma_log("DEBUG", "Registry global: %s (id=%u, version=%u)", interface, id,
             version);
  chroma_log("TRACE", "Checking interface binding for: %s", interface);

  if (strcmp(interface, wl_compositor_interface.name) == 0) {
    state->compositor = wl_registry_bind(registry, id, &wl_compositor_interface,
                                         version < 4 ? version : 4);
    if (!state->compositor) {
      chroma_log("ERROR", "Failed to bind compositor");
    } else {
      chroma_log("INFO", "Bound compositor (version %u)", version);
      chroma_log("TRACE", "Compositor binding successful, interface ready");
    }
  } else if (strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) {
    state->layer_shell =
        wl_registry_bind(registry, id, &zwlr_layer_shell_v1_interface,
                         version < 4 ? version : 4);
    if (!state->layer_shell) {
      chroma_log("ERROR", "Failed to bind layer shell");
    } else {
      chroma_log("INFO", "Bound layer shell (version %u)", version);
      chroma_log(
          "TRACE",
          "wlr-layer-shell protocol available, wallpaper support enabled");
    }
  } else if (strcmp(interface, wl_output_interface.name) == 0) {
    struct wl_output *output = wl_registry_bind(
        registry, id, &wl_output_interface, version < 4 ? version : 4);
    if (!output) {
      chroma_log("ERROR", "Failed to bind output %u", id);
      return;
    }

    if (chroma_output_add(state, id, output) != CHROMA_OK) {
      chroma_log("ERROR", "Failed to add output %u", id);
      wl_output_destroy(output);
    } else {
      chroma_log("INFO", "Added output %u", id);
    }
  }
}

static void registry_global_remove(void *data, struct wl_registry *registry,
                                   uint32_t id) {
  chroma_state_t *state = (chroma_state_t *)data;
  (void)registry;

  chroma_log("DEBUG", "Registry global remove: id=%u", id);
  chroma_log("TRACE", "Global object removal initiated for id=%u", id);
  chroma_output_remove(state, id);
}

const struct wl_registry_listener chroma_registry_listener_impl = {
    .global = registry_global,
    .global_remove = registry_global_remove,
};

// Layer surface event handlers
static void layer_surface_configure(void *data,
                                    struct zwlr_layer_surface_v1 *layer_surface,
                                    uint32_t serial, uint32_t width,
                                    uint32_t height) {
  chroma_output_t *output = (chroma_output_t *)data;
  (void)layer_surface;

  chroma_log("DEBUG", "Layer surface configure: %ux%u, serial=%u", width,
             height, serial);
  chroma_log(
      "TRACE",
      "Configuring layer surface for output %u: dimensions=%ux%u, serial=%u",
      output->id, width, height, serial);

  output->configure_serial = serial;

  // Acknowledge the configure event
  zwlr_layer_surface_v1_ack_configure(output->layer_surface, serial);
  chroma_log("TRACE", "Sent configure acknowledgment for output %u serial %u",
             output->id, serial);

  // Mark as configured - actual commit happens in render via eglSwapBuffers
  output->configured = true;

  chroma_log("DEBUG", "Acknowledged layer surface configure for output %u",
             output->id);
}

static void layer_surface_closed(void *data,
                                 struct zwlr_layer_surface_v1 *layer_surface) {
  chroma_output_t *output = (chroma_output_t *)data;
  (void)layer_surface;

  chroma_log("INFO", "Layer surface closed for output %u", output->id);

  // Clean up the surface
  if (output->surface) {
    chroma_surface_destroy(output);
  }
}

const struct zwlr_layer_surface_v1_listener chroma_layer_surface_listener_impl =
    {
        .configure = layer_surface_configure,
        .closed = layer_surface_closed,
};

// Output event handlers
static void output_geometry(void *data, struct wl_output *output, int32_t x,
                            int32_t y, int32_t physical_width,
                            int32_t physical_height, int32_t subpixel,
                            const char *make, const char *model,
                            int32_t transform) {
  chroma_output_t *chroma_output = (chroma_output_t *)data;
  (void)output;
  (void)subpixel;
  (void)make;
  (void)model;

  chroma_output->x = x;
  chroma_output->y = y;
  chroma_output->transform = transform;

  chroma_log("DEBUG", "Output %u geometry: %dx%d at (%d,%d), transform=%d",
             chroma_output->id, physical_width, physical_height, x, y,
             transform);
  chroma_log("TRACE",
             "Output %u geometry details: physical_size=%dx%dmm, "
             "position=(%d,%d), transform=%d",
             chroma_output->id, physical_width, physical_height, x, y,
             transform);
}

static void output_mode(void *data, struct wl_output *output, uint32_t flags,
                        int32_t width, int32_t height, int32_t refresh) {
  chroma_output_t *chroma_output = (chroma_output_t *)data;
  (void)output;

  if (flags & WL_OUTPUT_MODE_CURRENT) {
    chroma_output->width = width;
    chroma_output->height = height;
    chroma_log("DEBUG", "Output %u mode: %dx%d@%d (current)", chroma_output->id,
               width, height, refresh);
    chroma_log("TRACE",
               "Current mode set for output %u: %dx%d@%dHz, flags=0x%x",
               chroma_output->id, width, height, refresh, flags);
  } else {
    chroma_log("TRACE",
               "Non-current mode for output %u: %dx%d@%dHz, flags=0x%x",
               chroma_output->id, width, height, refresh, flags);
  }
}

static void output_scale(void *data, struct wl_output *output, int32_t scale) {
  chroma_output_t *chroma_output = (chroma_output_t *)data;
  (void)output;

  chroma_output->scale = scale;
  chroma_log("DEBUG", "Output %u scale: %d", chroma_output->id, scale);
}

static void output_name(void *data, struct wl_output *output,
                        const char *name) {
  chroma_output_t *chroma_output = (chroma_output_t *)data;
  (void)output;

  free(chroma_output->name);
  chroma_output->name = strdup(name);
  if (!chroma_output->name) {
    chroma_log("ERROR", "Failed to allocate memory for output name");
    return;
  }

  chroma_log("DEBUG", "Output %u name: %s", chroma_output->id, name);
}

static void output_description(void *data, struct wl_output *output,
                               const char *description) {
  chroma_output_t *chroma_output = (chroma_output_t *)data;
  (void)output;

  free(chroma_output->description);
  chroma_output->description = strdup(description);
  if (!chroma_output->description) {
    chroma_log("ERROR", "Failed to allocate memory for output description");
    return;
  }

  chroma_log("DEBUG", "Output %u description: %s", chroma_output->id,
             description);
}

static void output_done(void *data, struct wl_output *output) {
  chroma_output_t *chroma_output = (chroma_output_t *)data;
  (void)output;

  chroma_log("DEBUG", "Output %u done - configuration complete",
             chroma_output->id);
  chroma_log("TRACE",
             "Output %u configuration finalized: %dx%d, scale=%d, name='%s'",
             chroma_output->id, chroma_output->width, chroma_output->height,
             chroma_output->scale,
             chroma_output->name ? chroma_output->name : "unknown");

  // Mark output as active and ready for wallpaper assignment
  chroma_output->active = true;

  // Trigger wallpaper assignment for this output
  if (chroma_output->state) {
    chroma_log("TRACE", "Triggering wallpaper assignment for output %u",
               chroma_output->id);
    handle_output_done(chroma_output->state, chroma_output);
  }
}

const struct wl_output_listener chroma_output_listener_impl = {
    .geometry = output_geometry,
    .mode = output_mode,
    .scale = output_scale,
    .name = output_name,
    .description = output_description,
    .done = output_done,
};

// Wayland connection functions
int chroma_wayland_connect(chroma_state_t *state) {
  if (!state) {
    return CHROMA_ERROR_INIT;
  }

  // Connect to Wayland display
  state->display = wl_display_connect(NULL);
  if (!state->display) {
    chroma_log("ERROR", "Failed to connect to Wayland display: %s",
               strerror(errno));
    return CHROMA_ERROR_WAYLAND;
  }

  // Get registry
  state->registry = wl_display_get_registry(state->display);
  if (!state->registry) {
    chroma_log("ERROR", "Failed to get Wayland registry");
    chroma_wayland_disconnect(state);
    return CHROMA_ERROR_WAYLAND;
  }

  // Add registry listener
  wl_registry_add_listener(state->registry, &chroma_registry_listener_impl,
                           state);

  // Roundtrip to get all globals
  chroma_log("TRACE", "Starting Wayland display roundtrip to discover globals");
  if (wl_display_roundtrip(state->display) == -1) {
    chroma_log("ERROR", "Failed to roundtrip Wayland display");
    chroma_wayland_disconnect(state);
    return CHROMA_ERROR_WAYLAND;
  }
  chroma_log("TRACE", "Wayland display roundtrip completed");

  // Check if we got a compositor
  if (!state->compositor) {
    chroma_log("ERROR", "No compositor available");
    chroma_wayland_disconnect(state);
    return CHROMA_ERROR_WAYLAND;
  }

  // Check if we got layer shell
  if (!state->layer_shell) {
    chroma_log("ERROR", "No layer shell available - compositor may not support "
                        "wlr-layer-shell");
    chroma_wayland_disconnect(state);
    return CHROMA_ERROR_WAYLAND;
  }

  chroma_log("INFO", "Connected to Wayland display, found %d outputs",
             state->output_count);
  return CHROMA_OK;
}

void chroma_wayland_disconnect(chroma_state_t *state) {
  if (!state) {
    return;
  }

  // Clean up all outputs
  for (int i = 0; i < state->output_count; i++) {
    chroma_output_t *output = &state->outputs[i];
    if (output->surface) {
      chroma_surface_destroy(output);
    }

    if (output->wl_output) {
      wl_output_destroy(output->wl_output);
    }

    free(output->name);
    free(output->description);
  }
  state->output_count = 0;

  // Clean up Wayland objects
  if (state->layer_shell) {
    zwlr_layer_shell_v1_destroy(state->layer_shell);
    state->layer_shell = NULL;
  }

  if (state->compositor) {
    wl_compositor_destroy(state->compositor);
    state->compositor = NULL;
  }

  if (state->registry) {
    wl_registry_destroy(state->registry);
    state->registry = NULL;
  }

  if (state->display) {
    wl_display_disconnect(state->display);
    state->display = NULL;
  }

  chroma_log("INFO", "Disconnected from Wayland display");
}

// Output management functions
int chroma_output_add(chroma_state_t *state, uint32_t id,
                      struct wl_output *output) {
  if (!state || !output) {
    return CHROMA_ERROR_INIT;
  }

  if (state->output_count >= MAX_OUTPUTS) {
    chroma_log("ERROR", "Maximum number of outputs (%d) exceeded", MAX_OUTPUTS);
    return CHROMA_ERROR_MEMORY;
  }

  chroma_output_t *chroma_output = &state->outputs[state->output_count];
  memset(chroma_output, 0, sizeof(chroma_output_t));

  chroma_output->wl_output = output;
  chroma_output->id = id;
  chroma_output->scale = 1; // default scale
  chroma_output->active = false;
  chroma_output->state = state;

  // Add output listener
  wl_output_add_listener(output, &chroma_output_listener_impl, chroma_output);
  chroma_log("TRACE", "Output listener attached for output %u", id);

  state->output_count++;

  chroma_log("INFO", "Added output %u (total: %d)", id, state->output_count);
  chroma_log("TRACE",
             "Output %u initialized with default scale=1, active=false", id);
  return CHROMA_OK;
}

void chroma_output_remove(chroma_state_t *state, uint32_t id) {
  if (!state) {
    return;
  }

  chroma_output_t *output = chroma_output_find_by_id(state, id);
  if (!output) {
    chroma_log("WARN", "Attempted to remove non-existent output %u", id);
    return;
  }

  chroma_log("INFO", "Removing output %u (%s)", id,
             output->name ? output->name : "unknown");

  // Release image reference if the output holds one
  if (output->image) {
    chroma_image_release(output->image);
    output->image = NULL;
  }

  // Clean up surface if it exists
  if (output->surface) {
    chroma_surface_destroy(output);
  }

  // Clean up Wayland output
  if (output->wl_output) {
    wl_output_destroy(output->wl_output);
  }

  // Free allocated strings
  free(output->name);
  free(output->description);

  // Remove from array by shifting remaining elements
  ptrdiff_t index = output - state->outputs;
  size_t remaining = (size_t)(state->output_count - index - 1);
  chroma_log("TRACE", "Removing output %u from array: index=%td, remaining=%zu",
             id, index, remaining);
  if (remaining > 0) {
    memmove(output, output + 1, remaining * sizeof(chroma_output_t));
    chroma_log("TRACE", "Shifted %zu outputs in array after removal",
               remaining);
  }

  state->output_count--;
  chroma_log("INFO", "Removed output %u (remaining: %d)", id,
             state->output_count);
}

chroma_output_t *chroma_output_find_by_id(chroma_state_t *state, uint32_t id) {
  if (!state) {
    return NULL;
  }

  for (int i = 0; i < state->output_count; i++) {
    if (state->outputs[i].id == id) {
      return &state->outputs[i];
    }
  }

  return NULL;
}

chroma_output_t *chroma_output_find_by_name(chroma_state_t *state,
                                            const char *name) {
  if (!state || !name) {
    return NULL;
  }

  for (int i = 0; i < state->output_count; i++) {
    chroma_output_t *output = &state->outputs[i];
    if (output->name && strcmp(output->name, name) == 0) {
      return output;
    }
  }

  return NULL;
}

1	#include <errno.h>
2	#include <stdio.h>
3	#include <stdlib.h>
4	#include <string.h>
5	#include <unistd.h>
6
7	#include "../include/chroma.h"
8
9	// Registry listener
10	static void registry_global(void data, struct wl_registry registry,
11	uint32_t id, const char *interface,
12	uint32_t version) {
13	chroma_state_t state = (chroma_state_t )data;
14
15	chroma_log("DEBUG", "Registry global: %s (id=%u, version=%u)", interface, id,
16	version);
17	chroma_log("TRACE", "Checking interface binding for: %s", interface);
18
19	if (strcmp(interface, wl_compositor_interface.name) == 0) {
20	state->compositor = wl_registry_bind(registry, id, &wl_compositor_interface,
21	version < 4 ? version : 4);
22	if (!state->compositor) {
23	chroma_log("ERROR", "Failed to bind compositor");
24	} else {
25	chroma_log("INFO", "Bound compositor (version %u)", version);
26	chroma_log("TRACE", "Compositor binding successful, interface ready");
27	}
28	} else if (strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) {
29	state->layer_shell =
30	wl_registry_bind(registry, id, &zwlr_layer_shell_v1_interface,
31	version < 4 ? version : 4);
32	if (!state->layer_shell) {
33	chroma_log("ERROR", "Failed to bind layer shell");
34	} else {
35	chroma_log("INFO", "Bound layer shell (version %u)", version);
36	chroma_log(
37	"TRACE",
38	"wlr-layer-shell protocol available, wallpaper support enabled");
39	}
40	} else if (strcmp(interface, wl_output_interface.name) == 0) {
41	struct wl_output *output = wl_registry_bind(
42	registry, id, &wl_output_interface, version < 4 ? version : 4);
43	if (!output) {
44	chroma_log("ERROR", "Failed to bind output %u", id);
45	return;
46	}
47
48	if (chroma_output_add(state, id, output) != CHROMA_OK) {
49	chroma_log("ERROR", "Failed to add output %u", id);
50	wl_output_destroy(output);
51	} else {
52	chroma_log("INFO", "Added output %u", id);
53	}
54	}
55	}
56
57	static void registry_global_remove(void data, struct wl_registry registry,
58	uint32_t id) {
59	chroma_state_t state = (chroma_state_t )data;
60	(void)registry;
61
62	chroma_log("DEBUG", "Registry global remove: id=%u", id);
63	chroma_log("TRACE", "Global object removal initiated for id=%u", id);
64	chroma_output_remove(state, id);
65	}
66
67	const struct wl_registry_listener chroma_registry_listener_impl = {
68	.global = registry_global,
69	.global_remove = registry_global_remove,
70	};
71
72	// Layer surface event handlers
73	static void layer_surface_configure(void *data,
74	struct zwlr_layer_surface_v1 *layer_surface,
75	uint32_t serial, uint32_t width,
76	uint32_t height) {
77	chroma_output_t output = (chroma_output_t )data;
78	(void)layer_surface;
79
80	chroma_log("DEBUG", "Layer surface configure: %ux%u, serial=%u", width,
81	height, serial);
82	chroma_log(
83	"TRACE",
84	"Configuring layer surface for output %u: dimensions=%ux%u, serial=%u",
85	output->id, width, height, serial);
86
87	output->configure_serial = serial;
88
89	// Acknowledge the configure event
90	zwlr_layer_surface_v1_ack_configure(output->layer_surface, serial);
91	chroma_log("TRACE", "Sent configure acknowledgment for output %u serial %u",
92	output->id, serial);
93
94	// Mark as configured - actual commit happens in render via eglSwapBuffers
95	output->configured = true;
96
97	chroma_log("DEBUG", "Acknowledged layer surface configure for output %u",
98	output->id);
99	}
100
101	static void layer_surface_closed(void *data,
102	struct zwlr_layer_surface_v1 *layer_surface) {
103	chroma_output_t output = (chroma_output_t )data;
104	(void)layer_surface;
105
106	chroma_log("INFO", "Layer surface closed for output %u", output->id);
107
108	// Clean up the surface
109	if (output->surface) {
110	chroma_surface_destroy(output);
111	}
112	}
113
114	const struct zwlr_layer_surface_v1_listener chroma_layer_surface_listener_impl =
115	{
116	.configure = layer_surface_configure,
117	.closed = layer_surface_closed,
118	};
119
120	// Output event handlers
121	static void output_geometry(void data, struct wl_output output, int32_t x,
122	int32_t y, int32_t physical_width,
123	int32_t physical_height, int32_t subpixel,
124	const char make, const char model,
125	int32_t transform) {
126	chroma_output_t chroma_output = (chroma_output_t )data;
127	(void)output;
128	(void)subpixel;
129	(void)make;
130	(void)model;
131
132	chroma_output->x = x;
133	chroma_output->y = y;
134	chroma_output->transform = transform;
135
136	chroma_log("DEBUG", "Output %u geometry: %dx%d at (%d,%d), transform=%d",
137	chroma_output->id, physical_width, physical_height, x, y,
138	transform);
139	chroma_log("TRACE",
140	"Output %u geometry details: physical_size=%dx%dmm, "
141	"position=(%d,%d), transform=%d",
142	chroma_output->id, physical_width, physical_height, x, y,
143	transform);
144	}
145
146	static void output_mode(void data, struct wl_output output, uint32_t flags,
147	int32_t width, int32_t height, int32_t refresh) {
148	chroma_output_t chroma_output = (chroma_output_t )data;
149	(void)output;
150
151	if (flags & WL_OUTPUT_MODE_CURRENT) {
152	chroma_output->width = width;
153	chroma_output->height = height;
154	chroma_log("DEBUG", "Output %u mode: %dx%d@%d (current)", chroma_output->id,
155	width, height, refresh);
156	chroma_log("TRACE",
157	"Current mode set for output %u: %dx%d@%dHz, flags=0x%x",
158	chroma_output->id, width, height, refresh, flags);
159	} else {
160	chroma_log("TRACE",
161	"Non-current mode for output %u: %dx%d@%dHz, flags=0x%x",
162	chroma_output->id, width, height, refresh, flags);
163	}
164	}
165
166	static void output_scale(void data, struct wl_output output, int32_t scale) {
167	chroma_output_t chroma_output = (chroma_output_t )data;
168	(void)output;
169
170	chroma_output->scale = scale;
171	chroma_log("DEBUG", "Output %u scale: %d", chroma_output->id, scale);
172	}
173
174	static void output_name(void data, struct wl_output output,
175	const char *name) {
176	chroma_output_t chroma_output = (chroma_output_t )data;
177	(void)output;
178
179	free(chroma_output->name);
180	chroma_output->name = strdup(name);
181	if (!chroma_output->name) {
182	chroma_log("ERROR", "Failed to allocate memory for output name");
183	return;
184	}
185
186	chroma_log("DEBUG", "Output %u name: %s", chroma_output->id, name);
187	}
188
189	static void output_description(void data, struct wl_output output,
190	const char *description) {
191	chroma_output_t chroma_output = (chroma_output_t )data;
192	(void)output;
193
194	free(chroma_output->description);
195	chroma_output->description = strdup(description);
196	if (!chroma_output->description) {
197	chroma_log("ERROR", "Failed to allocate memory for output description");
198	return;
199	}
200
201	chroma_log("DEBUG", "Output %u description: %s", chroma_output->id,
202	description);
203	}
204
205	static void output_done(void data, struct wl_output output) {
206	chroma_output_t chroma_output = (chroma_output_t )data;
207	(void)output;
208
209	chroma_log("DEBUG", "Output %u done - configuration complete",
210	chroma_output->id);
211	chroma_log("TRACE",
212	"Output %u configuration finalized: %dx%d, scale=%d, name='%s'",
213	chroma_output->id, chroma_output->width, chroma_output->height,
214	chroma_output->scale,
215	chroma_output->name ? chroma_output->name : "unknown");
216
217	// Mark output as active and ready for wallpaper assignment
218	chroma_output->active = true;
219
220	// Trigger wallpaper assignment for this output
221	if (chroma_output->state) {
222	chroma_log("TRACE", "Triggering wallpaper assignment for output %u",
223	chroma_output->id);
224	handle_output_done(chroma_output->state, chroma_output);
225	}
226	}
227
228	const struct wl_output_listener chroma_output_listener_impl = {
229	.geometry = output_geometry,
230	.mode = output_mode,
231	.scale = output_scale,
232	.name = output_name,
233	.description = output_description,
234	.done = output_done,
235	};
236
237	// Wayland connection functions
238	int chroma_wayland_connect(chroma_state_t *state) {
239	if (!state) {
240	return CHROMA_ERROR_INIT;
241	}
242
243	// Connect to Wayland display
244	state->display = wl_display_connect(NULL);
245	if (!state->display) {
246	chroma_log("ERROR", "Failed to connect to Wayland display: %s",
247	strerror(errno));
248	return CHROMA_ERROR_WAYLAND;
249	}
250
251	// Get registry
252	state->registry = wl_display_get_registry(state->display);
253	if (!state->registry) {
254	chroma_log("ERROR", "Failed to get Wayland registry");
255	chroma_wayland_disconnect(state);
256	return CHROMA_ERROR_WAYLAND;
257	}
258
259	// Add registry listener
260	wl_registry_add_listener(state->registry, &chroma_registry_listener_impl,
261	state);
262
263	// Roundtrip to get all globals
264	chroma_log("TRACE", "Starting Wayland display roundtrip to discover globals");
265	if (wl_display_roundtrip(state->display) == -1) {
266	chroma_log("ERROR", "Failed to roundtrip Wayland display");
267	chroma_wayland_disconnect(state);
268	return CHROMA_ERROR_WAYLAND;
269	}
270	chroma_log("TRACE", "Wayland display roundtrip completed");
271
272	// Check if we got a compositor
273	if (!state->compositor) {
274	chroma_log("ERROR", "No compositor available");
275	chroma_wayland_disconnect(state);
276	return CHROMA_ERROR_WAYLAND;
277	}
278
279	// Check if we got layer shell
280	if (!state->layer_shell) {
281	chroma_log("ERROR", "No layer shell available - compositor may not support "
282	"wlr-layer-shell");
283	chroma_wayland_disconnect(state);
284	return CHROMA_ERROR_WAYLAND;
285	}
286
287	chroma_log("INFO", "Connected to Wayland display, found %d outputs",
288	state->output_count);
289	return CHROMA_OK;
290	}
291
292	void chroma_wayland_disconnect(chroma_state_t *state) {
293	if (!state) {
294	return;
295	}
296
297	// Clean up all outputs
298	for (int i = 0; i < state->output_count; i++) {
299	chroma_output_t *output = &state->outputs[i];
300	if (output->surface) {
301	chroma_surface_destroy(output);
302	}
303
304	if (output->wl_output) {
305	wl_output_destroy(output->wl_output);
306	}
307
308	free(output->name);
309	free(output->description);
310	}
311	state->output_count = 0;
312
313	// Clean up Wayland objects
314	if (state->layer_shell) {
315	zwlr_layer_shell_v1_destroy(state->layer_shell);
316	state->layer_shell = NULL;
317	}
318
319	if (state->compositor) {
320	wl_compositor_destroy(state->compositor);
321	state->compositor = NULL;
322	}
323
324	if (state->registry) {
325	wl_registry_destroy(state->registry);
326	state->registry = NULL;
327	}
328
329	if (state->display) {
330	wl_display_disconnect(state->display);
331	state->display = NULL;
332	}
333
334	chroma_log("INFO", "Disconnected from Wayland display");
335	}
336
337	// Output management functions
338	int chroma_output_add(chroma_state_t *state, uint32_t id,
339	struct wl_output *output) {
340	if (!state \|\| !output) {
341	return CHROMA_ERROR_INIT;
342	}
343
344	if (state->output_count >= MAX_OUTPUTS) {
345	chroma_log("ERROR", "Maximum number of outputs (%d) exceeded", MAX_OUTPUTS);
346	return CHROMA_ERROR_MEMORY;
347	}
348
349	chroma_output_t *chroma_output = &state->outputs[state->output_count];
350	memset(chroma_output, 0, sizeof(chroma_output_t));
351
352	chroma_output->wl_output = output;
353	chroma_output->id = id;
354	chroma_output->scale = 1; // default scale
355	chroma_output->active = false;
356	chroma_output->state = state;
357
358	// Add output listener
359	wl_output_add_listener(output, &chroma_output_listener_impl, chroma_output);
360	chroma_log("TRACE", "Output listener attached for output %u", id);
361
362	state->output_count++;
363
364	chroma_log("INFO", "Added output %u (total: %d)", id, state->output_count);
365	chroma_log("TRACE",
366	"Output %u initialized with default scale=1, active=false", id);
367	return CHROMA_OK;
368	}
369
370	void chroma_output_remove(chroma_state_t *state, uint32_t id) {
371	if (!state) {
372	return;
373	}
374
375	chroma_output_t *output = chroma_output_find_by_id(state, id);
376	if (!output) {
377	chroma_log("WARN", "Attempted to remove non-existent output %u", id);
378	return;
379	}
380
381	chroma_log("INFO", "Removing output %u (%s)", id,
382	output->name ? output->name : "unknown");
383
384	// Release image reference if the output holds one
385	if (output->image) {
386	chroma_image_release(output->image);
387	output->image = NULL;
388	}
389
390	// Clean up surface if it exists
391	if (output->surface) {
392	chroma_surface_destroy(output);
393	}
394
395	// Clean up Wayland output
396	if (output->wl_output) {
397	wl_output_destroy(output->wl_output);
398	}
399
400	// Free allocated strings
401	free(output->name);
402	free(output->description);
403
404	// Remove from array by shifting remaining elements
405	ptrdiff_t index = output - state->outputs;
406	size_t remaining = (size_t)(state->output_count - index - 1);
407	chroma_log("TRACE", "Removing output %u from array: index=%td, remaining=%zu",
408	id, index, remaining);
409	if (remaining > 0) {
410	memmove(output, output + 1, remaining * sizeof(chroma_output_t));
411	chroma_log("TRACE", "Shifted %zu outputs in array after removal",
412	remaining);
413	}
414
415	state->output_count--;
416	chroma_log("INFO", "Removed output %u (remaining: %d)", id,
417	state->output_count);
418	}
419
420	chroma_output_t chroma_output_find_by_id(chroma_state_t state, uint32_t id) {
421	if (!state) {
422	return NULL;
423	}
424
425	for (int i = 0; i < state->output_count; i++) {
426	if (state->outputs[i].id == id) {
427	return &state->outputs[i];
428	}
429	}
430
431	return NULL;
432	}
433
434	chroma_output_t chroma_output_find_by_name(chroma_state_t state,
435	const char *name) {
436	if (!state \|\| !name) {
437	return NULL;
438	}
439
440	for (int i = 0; i < state->output_count; i++) {
441	chroma_output_t *output = &state->outputs[i];
442	if (output->name && strcmp(output->name, name) == 0) {
443	return output;
444	}
445	}
446
447	return NULL;
448	}