wlroots-hyprland/backend/wayland/output.c

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#include <assert.h>
#include <stdint.h>
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
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#include <sys/mman.h>
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#include <sys/types.h>
#include <unistd.h>
#include <drm_fourcc.h>
#include <wayland-client.h>
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#include <wlr/interfaces/wlr_output.h>
#include <wlr/render/wlr_renderer.h>
#include <wlr/types/wlr_matrix.h>
#include <wlr/types/wlr_output_layer.h>
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#include <wlr/util/log.h>
#include "backend/wayland.h"
#include "render/pixel_format.h"
#include "render/wlr_renderer.h"
#include "linux-dmabuf-unstable-v1-client-protocol.h"
#include "presentation-time-client-protocol.h"
#include "viewporter-client-protocol.h"
#include "xdg-activation-v1-client-protocol.h"
#include "xdg-decoration-unstable-v1-client-protocol.h"
#include "xdg-shell-client-protocol.h"
static const uint32_t SUPPORTED_OUTPUT_STATE =
WLR_OUTPUT_STATE_BACKEND_OPTIONAL |
WLR_OUTPUT_STATE_BUFFER |
WLR_OUTPUT_STATE_ENABLED |
WLR_OUTPUT_STATE_MODE |
WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED;
static size_t last_output_num = 0;
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static struct wlr_wl_output *get_wl_output_from_output(
struct wlr_output *wlr_output) {
assert(wlr_output_is_wl(wlr_output));
return (struct wlr_wl_output *)wlr_output;
}
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static void surface_frame_callback(void *data, struct wl_callback *cb,
uint32_t time) {
struct wlr_wl_output *output = data;
if (cb == NULL) {
return;
}
assert(output->frame_callback == cb);
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wl_callback_destroy(cb);
output->frame_callback = NULL;
wlr_output_send_frame(&output->wlr_output);
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}
static const struct wl_callback_listener frame_listener = {
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.done = surface_frame_callback
};
static void presentation_feedback_destroy(
struct wlr_wl_presentation_feedback *feedback) {
wl_list_remove(&feedback->link);
wp_presentation_feedback_destroy(feedback->feedback);
free(feedback);
}
static void presentation_feedback_handle_sync_output(void *data,
struct wp_presentation_feedback *feedback, struct wl_output *output) {
// This space is intentionally left blank
}
static void presentation_feedback_handle_presented(void *data,
struct wp_presentation_feedback *wp_feedback, uint32_t tv_sec_hi,
uint32_t tv_sec_lo, uint32_t tv_nsec, uint32_t refresh_ns,
uint32_t seq_hi, uint32_t seq_lo, uint32_t flags) {
struct wlr_wl_presentation_feedback *feedback = data;
struct timespec t = {
.tv_sec = ((uint64_t)tv_sec_hi << 32) | tv_sec_lo,
.tv_nsec = tv_nsec,
};
struct wlr_output_event_present event = {
.commit_seq = feedback->commit_seq,
.presented = true,
.when = &t,
.seq = ((uint64_t)seq_hi << 32) | seq_lo,
.refresh = refresh_ns,
.flags = flags,
};
wlr_output_send_present(&feedback->output->wlr_output, &event);
presentation_feedback_destroy(feedback);
}
static void presentation_feedback_handle_discarded(void *data,
struct wp_presentation_feedback *wp_feedback) {
struct wlr_wl_presentation_feedback *feedback = data;
struct wlr_output_event_present event = {
.commit_seq = feedback->commit_seq,
.presented = false,
};
wlr_output_send_present(&feedback->output->wlr_output, &event);
presentation_feedback_destroy(feedback);
}
static const struct wp_presentation_feedback_listener
presentation_feedback_listener = {
.sync_output = presentation_feedback_handle_sync_output,
.presented = presentation_feedback_handle_presented,
.discarded = presentation_feedback_handle_discarded,
};
void destroy_wl_buffer(struct wlr_wl_buffer *buffer) {
if (buffer == NULL) {
return;
}
wl_list_remove(&buffer->buffer_destroy.link);
wl_list_remove(&buffer->link);
wl_buffer_destroy(buffer->wl_buffer);
if (!buffer->released) {
wlr_buffer_unlock(buffer->buffer);
}
free(buffer);
}
static void buffer_handle_release(void *data, struct wl_buffer *wl_buffer) {
struct wlr_wl_buffer *buffer = data;
buffer->released = true;
wlr_buffer_unlock(buffer->buffer); // might free buffer
}
static const struct wl_buffer_listener buffer_listener = {
.release = buffer_handle_release,
};
static void buffer_handle_buffer_destroy(struct wl_listener *listener,
void *data) {
struct wlr_wl_buffer *buffer =
wl_container_of(listener, buffer, buffer_destroy);
destroy_wl_buffer(buffer);
}
static bool test_buffer(struct wlr_wl_backend *wl,
struct wlr_buffer *wlr_buffer) {
struct wlr_dmabuf_attributes dmabuf;
struct wlr_shm_attributes shm;
if (wlr_buffer_get_dmabuf(wlr_buffer, &dmabuf)) {
return wlr_drm_format_set_has(&wl->linux_dmabuf_v1_formats,
dmabuf.format, dmabuf.modifier);
} else if (wlr_buffer_get_shm(wlr_buffer, &shm)) {
return wlr_drm_format_set_has(&wl->shm_formats, shm.format,
DRM_FORMAT_MOD_INVALID);
} else {
return false;
}
}
static struct wl_buffer *import_dmabuf(struct wlr_wl_backend *wl,
struct wlr_dmabuf_attributes *dmabuf) {
uint32_t modifier_hi = dmabuf->modifier >> 32;
uint32_t modifier_lo = (uint32_t)dmabuf->modifier;
struct zwp_linux_buffer_params_v1 *params =
zwp_linux_dmabuf_v1_create_params(wl->zwp_linux_dmabuf_v1);
for (int i = 0; i < dmabuf->n_planes; i++) {
zwp_linux_buffer_params_v1_add(params, dmabuf->fd[i], i,
dmabuf->offset[i], dmabuf->stride[i], modifier_hi, modifier_lo);
}
struct wl_buffer *wl_buffer = zwp_linux_buffer_params_v1_create_immed(
params, dmabuf->width, dmabuf->height, dmabuf->format, 0);
zwp_linux_buffer_params_v1_destroy(params);
// TODO: handle create() errors
return wl_buffer;
}
static struct wl_buffer *import_shm(struct wlr_wl_backend *wl,
struct wlr_shm_attributes *shm) {
enum wl_shm_format wl_shm_format = convert_drm_format_to_wl_shm(shm->format);
uint32_t size = shm->stride * shm->height;
struct wl_shm_pool *pool = wl_shm_create_pool(wl->shm, shm->fd, size);
if (pool == NULL) {
return NULL;
}
struct wl_buffer *wl_buffer = wl_shm_pool_create_buffer(pool, shm->offset,
shm->width, shm->height, shm->stride, wl_shm_format);
wl_shm_pool_destroy(pool);
return wl_buffer;
}
static struct wlr_wl_buffer *create_wl_buffer(struct wlr_wl_backend *wl,
struct wlr_buffer *wlr_buffer) {
if (!test_buffer(wl, wlr_buffer)) {
return NULL;
}
struct wlr_dmabuf_attributes dmabuf;
struct wlr_shm_attributes shm;
struct wl_buffer *wl_buffer;
if (wlr_buffer_get_dmabuf(wlr_buffer, &dmabuf)) {
wl_buffer = import_dmabuf(wl, &dmabuf);
} else if (wlr_buffer_get_shm(wlr_buffer, &shm)) {
wl_buffer = import_shm(wl, &shm);
} else {
return NULL;
}
if (wl_buffer == NULL) {
return NULL;
}
struct wlr_wl_buffer *buffer = calloc(1, sizeof(struct wlr_wl_buffer));
if (buffer == NULL) {
wl_buffer_destroy(wl_buffer);
return NULL;
}
buffer->wl_buffer = wl_buffer;
buffer->buffer = wlr_buffer_lock(wlr_buffer);
wl_list_insert(&wl->buffers, &buffer->link);
wl_buffer_add_listener(wl_buffer, &buffer_listener, buffer);
buffer->buffer_destroy.notify = buffer_handle_buffer_destroy;
wl_signal_add(&wlr_buffer->events.destroy, &buffer->buffer_destroy);
return buffer;
}
static struct wlr_wl_buffer *get_or_create_wl_buffer(struct wlr_wl_backend *wl,
struct wlr_buffer *wlr_buffer) {
struct wlr_wl_buffer *buffer;
wl_list_for_each(buffer, &wl->buffers, link) {
// We can only re-use a wlr_wl_buffer if the parent compositor has
// released it, because wl_buffer.release is per-wl_buffer, not per
// wl_surface.commit.
if (buffer->buffer == wlr_buffer && buffer->released) {
buffer->released = false;
wlr_buffer_lock(buffer->buffer);
return buffer;
}
}
return create_wl_buffer(wl, wlr_buffer);
}
static bool output_test(struct wlr_output *wlr_output,
const struct wlr_output_state *state) {
struct wlr_wl_output *output =
get_wl_output_from_output(wlr_output);
uint32_t unsupported = state->committed & ~SUPPORTED_OUTPUT_STATE;
if (unsupported != 0) {
wlr_log(WLR_DEBUG, "Unsupported output state fields: 0x%"PRIx32,
unsupported);
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return false;
}
// Adaptive sync is effectively always enabled when using the Wayland
// backend. This is not something we have control over, so we set the state
// to enabled on creating the output and never allow changing it.
assert(wlr_output->adaptive_sync_status == WLR_OUTPUT_ADAPTIVE_SYNC_ENABLED);
if (state->committed & WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED) {
if (!state->adaptive_sync_enabled) {
return false;
}
}
if (state->committed & WLR_OUTPUT_STATE_MODE) {
assert(state->mode_type == WLR_OUTPUT_STATE_MODE_CUSTOM);
if (state->custom_mode.refresh != 0) {
return false;
}
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}
if ((state->committed & WLR_OUTPUT_STATE_BUFFER) &&
!test_buffer(output->backend, state->buffer)) {
return false;
}
if (state->committed & WLR_OUTPUT_STATE_LAYERS) {
// If we can't use a sub-surface for a layer, then we can't use a
// sub-surface for any layer underneath
bool supported = output->backend->subcompositor != NULL;
for (ssize_t i = state->layers_len - 1; i >= 0; i--) {
struct wlr_output_layer_state *layer_state = &state->layers[i];
if (layer_state->buffer != NULL) {
int x = layer_state->dst_box.x;
int y = layer_state->dst_box.y;
int width = layer_state->dst_box.width;
int height = layer_state->dst_box.height;
bool needs_viewport = width != layer_state->buffer->width ||
height != layer_state->buffer->height;
if (!wlr_fbox_empty(&layer_state->src_box)) {
needs_viewport = needs_viewport ||
layer_state->src_box.x != 0 ||
layer_state->src_box.y != 0 ||
layer_state->src_box.width != width ||
layer_state->src_box.height != height;
}
if (x < 0 || y < 0 ||
x + width > wlr_output->width ||
y + height > wlr_output->height ||
(output->backend->viewporter == NULL && needs_viewport)) {
supported = false;
}
supported = supported &&
test_buffer(output->backend, layer_state->buffer);
}
layer_state->accepted = supported;
}
}
return true;
}
static void output_layer_handle_addon_destroy(struct wlr_addon *addon) {
struct wlr_wl_output_layer *layer = wl_container_of(addon, layer, addon);
wlr_addon_finish(&layer->addon);
if (layer->viewport != NULL) {
wp_viewport_destroy(layer->viewport);
}
wl_subsurface_destroy(layer->subsurface);
wl_surface_destroy(layer->surface);
free(layer);
}
static const struct wlr_addon_interface output_layer_addon_impl = {
.name = "wlr_wl_output_layer",
.destroy = output_layer_handle_addon_destroy,
};
static struct wlr_wl_output_layer *get_or_create_output_layer(
struct wlr_wl_output *output, struct wlr_output_layer *wlr_layer) {
assert(output->backend->subcompositor != NULL);
struct wlr_wl_output_layer *layer;
struct wlr_addon *addon = wlr_addon_find(&wlr_layer->addons, output,
&output_layer_addon_impl);
if (addon != NULL) {
layer = wl_container_of(addon, layer, addon);
return layer;
}
layer = calloc(1, sizeof(*layer));
if (layer == NULL) {
return NULL;
}
wlr_addon_init(&layer->addon, &wlr_layer->addons, output,
&output_layer_addon_impl);
layer->surface = wl_compositor_create_surface(output->backend->compositor);
layer->subsurface = wl_subcompositor_get_subsurface(
output->backend->subcompositor, layer->surface, output->surface);
// Set an empty input region so that input events are handled by the main
// surface
struct wl_region *region = wl_compositor_create_region(output->backend->compositor);
wl_surface_set_input_region(layer->surface, region);
wl_region_destroy(region);
if (output->backend->viewporter != NULL) {
layer->viewport = wp_viewporter_get_viewport(output->backend->viewporter, layer->surface);
}
return layer;
}
static bool has_layers_order_changed(struct wlr_wl_output *output,
struct wlr_output_layer_state *layers, size_t layers_len) {
// output_basic_check() ensures that layers_len equals the number of
// registered output layers
size_t i = 0;
struct wlr_output_layer *layer;
wl_list_for_each(layer, &output->wlr_output.layers, link) {
assert(i < layers_len);
const struct wlr_output_layer_state *layer_state = &layers[i];
if (layer_state->layer != layer) {
return true;
}
i++;
}
assert(i == layers_len);
return false;
}
static void output_layer_unmap(struct wlr_wl_output_layer *layer) {
if (!layer->mapped) {
return;
}
wl_surface_attach(layer->surface, NULL, 0, 0);
wl_surface_commit(layer->surface);
layer->mapped = false;
}
static bool output_layer_commit(struct wlr_wl_output *output,
struct wlr_wl_output_layer *layer,
const struct wlr_output_layer_state *state) {
if (state->layer->dst_box.x != state->dst_box.x ||
state->layer->dst_box.y != state->dst_box.y) {
wl_subsurface_set_position(layer->subsurface, state->dst_box.x, state->dst_box.y);
}
if (state->buffer == NULL) {
output_layer_unmap(layer);
return true;
}
struct wlr_wl_buffer *buffer =
get_or_create_wl_buffer(output->backend, state->buffer);
if (buffer == NULL) {
return false;
}
if (layer->viewport != NULL &&
(state->layer->dst_box.width != state->dst_box.width ||
state->layer->dst_box.height != state->dst_box.height)) {
wp_viewport_set_destination(layer->viewport, state->dst_box.width, state->dst_box.height);
}
if (layer->viewport != NULL && !wlr_fbox_equal(&state->layer->src_box, &state->src_box)) {
struct wlr_fbox src_box = state->src_box;
if (wlr_fbox_empty(&src_box)) {
// -1 resets the box
src_box = (struct wlr_fbox){
.x = -1,
.y = -1,
.width = -1,
.height = -1,
};
}
wp_viewport_set_source(layer->viewport,
wl_fixed_from_double(src_box.x),
wl_fixed_from_double(src_box.y),
wl_fixed_from_double(src_box.width),
wl_fixed_from_double(src_box.height));
}
wl_surface_attach(layer->surface, buffer->wl_buffer, 0, 0);
wl_surface_damage_buffer(layer->surface, 0, 0, INT32_MAX, INT32_MAX);
wl_surface_commit(layer->surface);
layer->mapped = true;
return true;
}
static bool commit_layers(struct wlr_wl_output *output,
struct wlr_output_layer_state *layers, size_t layers_len) {
if (output->backend->subcompositor == NULL) {
return true;
}
bool reordered = has_layers_order_changed(output, layers, layers_len);
struct wlr_wl_output_layer *prev_layer = NULL;
for (size_t i = 0; i < layers_len; i++) {
struct wlr_wl_output_layer *layer =
get_or_create_output_layer(output, layers[i].layer);
if (layer == NULL) {
return false;
}
if (!layers[i].accepted) {
output_layer_unmap(layer);
continue;
}
if (prev_layer != NULL && reordered) {
wl_subsurface_place_above(layer->subsurface,
prev_layer->surface);
}
if (!output_layer_commit(output, layer, &layers[i])) {
return false;
}
}
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return true;
}
static bool output_commit(struct wlr_output *wlr_output,
const struct wlr_output_state *state) {
struct wlr_wl_output *output =
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get_wl_output_from_output(wlr_output);
if (!output_test(wlr_output, state)) {
return false;
}
if ((state->committed & WLR_OUTPUT_STATE_ENABLED) && !state->enabled) {
wl_surface_attach(output->surface, NULL, 0, 0);
wl_surface_commit(output->surface);
}
if (state->committed & WLR_OUTPUT_STATE_BUFFER) {
const pixman_region32_t *damage = NULL;
if (state->committed & WLR_OUTPUT_STATE_DAMAGE) {
damage = &state->damage;
}
struct wlr_buffer *wlr_buffer = state->buffer;
struct wlr_wl_buffer *buffer =
get_or_create_wl_buffer(output->backend, wlr_buffer);
if (buffer == NULL) {
return false;
}
wl_surface_attach(output->surface, buffer->wl_buffer, 0, 0);
if (damage == NULL) {
wl_surface_damage_buffer(output->surface,
0, 0, INT32_MAX, INT32_MAX);
} else {
int rects_len;
const pixman_box32_t *rects =
pixman_region32_rectangles(damage, &rects_len);
for (int i = 0; i < rects_len; i++) {
const pixman_box32_t *r = &rects[i];
wl_surface_damage_buffer(output->surface, r->x1, r->y1,
r->x2 - r->x1, r->y2 - r->y1);
}
}
}
if ((state->committed & WLR_OUTPUT_STATE_LAYERS) &&
!commit_layers(output, state->layers, state->layers_len)) {
return false;
}
if (state->committed & (WLR_OUTPUT_STATE_BUFFER | WLR_OUTPUT_STATE_LAYERS)) {
if (output->frame_callback != NULL) {
wl_callback_destroy(output->frame_callback);
}
output->frame_callback = wl_surface_frame(output->surface);
wl_callback_add_listener(output->frame_callback, &frame_listener, output);
struct wp_presentation_feedback *wp_feedback = NULL;
if (output->backend->presentation != NULL) {
wp_feedback = wp_presentation_feedback(output->backend->presentation,
output->surface);
}
wl_surface_commit(output->surface);
if (wp_feedback != NULL) {
struct wlr_wl_presentation_feedback *feedback =
calloc(1, sizeof(*feedback));
if (feedback == NULL) {
wp_presentation_feedback_destroy(wp_feedback);
return false;
}
feedback->output = output;
feedback->feedback = wp_feedback;
feedback->commit_seq = output->wlr_output.commit_seq + 1;
wl_list_insert(&output->presentation_feedbacks, &feedback->link);
wp_presentation_feedback_add_listener(wp_feedback,
&presentation_feedback_listener, feedback);
} else {
struct wlr_output_event_present present_event = {
.commit_seq = wlr_output->commit_seq + 1,
.presented = true,
};
wlr_output_send_present(wlr_output, &present_event);
}
}
wl_display_flush(output->backend->remote_display);
return true;
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}
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static bool output_set_cursor(struct wlr_output *wlr_output,
struct wlr_buffer *wlr_buffer, int hotspot_x, int hotspot_y) {
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struct wlr_wl_output *output = get_wl_output_from_output(wlr_output);
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struct wlr_wl_backend *backend = output->backend;
output->cursor.hotspot_x = hotspot_x;
output->cursor.hotspot_y = hotspot_y;
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if (output->cursor.surface == NULL) {
output->cursor.surface =
wl_compositor_create_surface(backend->compositor);
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}
struct wl_surface *surface = output->cursor.surface;
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if (wlr_buffer != NULL) {
struct wlr_wl_buffer *buffer =
get_or_create_wl_buffer(output->backend, wlr_buffer);
if (buffer == NULL) {
return false;
}
wl_surface_attach(surface, buffer->wl_buffer, 0, 0);
wl_surface_damage_buffer(surface, 0, 0, INT32_MAX, INT32_MAX);
wl_surface_commit(surface);
} else {
wl_surface_attach(surface, NULL, 0, 0);
wl_surface_commit(surface);
}
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update_wl_output_cursor(output);
wl_display_flush(backend->remote_display);
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return true;
}
static const struct wlr_drm_format_set *output_get_formats(
struct wlr_output *wlr_output, uint32_t buffer_caps) {
struct wlr_wl_output *output = get_wl_output_from_output(wlr_output);
if (buffer_caps & WLR_BUFFER_CAP_DMABUF) {
return &output->backend->linux_dmabuf_v1_formats;
} else if (buffer_caps & WLR_BUFFER_CAP_SHM) {
return &output->backend->shm_formats;
}
return NULL;
}
static void output_destroy(struct wlr_output *wlr_output) {
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struct wlr_wl_output *output = get_wl_output_from_output(wlr_output);
if (output == NULL) {
return;
}
wl_list_remove(&output->link);
if (output->cursor.surface) {
wl_surface_destroy(output->cursor.surface);
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}
if (output->frame_callback) {
wl_callback_destroy(output->frame_callback);
}
struct wlr_wl_presentation_feedback *feedback, *feedback_tmp;
wl_list_for_each_safe(feedback, feedback_tmp,
&output->presentation_feedbacks, link) {
presentation_feedback_destroy(feedback);
}
if (output->zxdg_toplevel_decoration_v1) {
zxdg_toplevel_decoration_v1_destroy(output->zxdg_toplevel_decoration_v1);
}
xdg_toplevel_destroy(output->xdg_toplevel);
xdg_surface_destroy(output->xdg_surface);
wl_surface_destroy(output->surface);
wl_display_flush(output->backend->remote_display);
free(output);
}
void update_wl_output_cursor(struct wlr_wl_output *output) {
struct wlr_wl_pointer *pointer = output->cursor.pointer;
if (pointer) {
assert(pointer->output == output);
assert(output->enter_serial);
struct wlr_wl_seat *seat = pointer->seat;
wl_pointer_set_cursor(seat->wl_pointer, output->enter_serial,
output->cursor.surface, output->cursor.hotspot_x,
output->cursor.hotspot_y);
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}
}
static bool output_move_cursor(struct wlr_output *_output, int x, int y) {
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// TODO: only return true if x == current x and y == current y
return true;
}
static const struct wlr_output_impl output_impl = {
.destroy = output_destroy,
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.test = output_test,
.commit = output_commit,
.set_cursor = output_set_cursor,
.move_cursor = output_move_cursor,
.get_cursor_formats = output_get_formats,
.get_primary_formats = output_get_formats,
};
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bool wlr_output_is_wl(struct wlr_output *wlr_output) {
return wlr_output->impl == &output_impl;
}
static void xdg_surface_handle_configure(void *data,
struct xdg_surface *xdg_surface, uint32_t serial) {
struct wlr_wl_output *output = data;
assert(output && output->xdg_surface == xdg_surface);
xdg_surface_ack_configure(xdg_surface, serial);
// nothing else?
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}
static const struct xdg_surface_listener xdg_surface_listener = {
.configure = xdg_surface_handle_configure,
};
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static void xdg_toplevel_handle_configure(void *data,
struct xdg_toplevel *xdg_toplevel,
int32_t width, int32_t height, struct wl_array *states) {
struct wlr_wl_output *output = data;
assert(output && output->xdg_toplevel == xdg_toplevel);
if (width == 0 || height == 0) {
return;
}
struct wlr_output_state state;
wlr_output_state_init(&state);
wlr_output_state_set_custom_mode(&state, width, height, 0);
wlr_output_send_request_state(&output->wlr_output, &state);
wlr_output_state_finish(&state);
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}
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static void xdg_toplevel_handle_close(void *data,
struct xdg_toplevel *xdg_toplevel) {
struct wlr_wl_output *output = data;
assert(output && output->xdg_toplevel == xdg_toplevel);
wlr_output_destroy(&output->wlr_output);
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}
static const struct xdg_toplevel_listener xdg_toplevel_listener = {
.configure = xdg_toplevel_handle_configure,
.close = xdg_toplevel_handle_close,
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};
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struct wlr_output *wlr_wl_output_create(struct wlr_backend *wlr_backend) {
struct wlr_wl_backend *backend = get_wl_backend_from_backend(wlr_backend);
if (!backend->started) {
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++backend->requested_outputs;
return NULL;
}
struct wlr_wl_output *output;
if (!(output = calloc(sizeof(struct wlr_wl_output), 1))) {
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wlr_log(WLR_ERROR, "Failed to allocate wlr_wl_output");
return NULL;
}
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wlr_output_init(&output->wlr_output, &backend->backend, &output_impl,
backend->local_display);
struct wlr_output *wlr_output = &output->wlr_output;
wlr_output_update_custom_mode(wlr_output, 1280, 720, 0);
wlr_output->adaptive_sync_status = WLR_OUTPUT_ADAPTIVE_SYNC_ENABLED;
size_t output_num = ++last_output_num;
char name[64];
snprintf(name, sizeof(name), "WL-%zu", output_num);
wlr_output_set_name(wlr_output, name);
char description[128];
snprintf(description, sizeof(description), "Wayland output %zu", output_num);
wlr_output_set_description(wlr_output, description);
output->backend = backend;
wl_list_init(&output->presentation_feedbacks);
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output->surface = wl_compositor_create_surface(backend->compositor);
if (!output->surface) {
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wlr_log_errno(WLR_ERROR, "Could not create output surface");
goto error;
}
wl_surface_set_user_data(output->surface, output);
output->xdg_surface =
xdg_wm_base_get_xdg_surface(backend->xdg_wm_base, output->surface);
if (!output->xdg_surface) {
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wlr_log_errno(WLR_ERROR, "Could not get xdg surface");
goto error;
}
output->xdg_toplevel =
xdg_surface_get_toplevel(output->xdg_surface);
if (!output->xdg_toplevel) {
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wlr_log_errno(WLR_ERROR, "Could not get xdg toplevel");
goto error;
}
if (backend->zxdg_decoration_manager_v1) {
output->zxdg_toplevel_decoration_v1 =
zxdg_decoration_manager_v1_get_toplevel_decoration(
backend->zxdg_decoration_manager_v1, output->xdg_toplevel);
if (!output->zxdg_toplevel_decoration_v1) {
wlr_log_errno(WLR_ERROR, "Could not get xdg toplevel decoration");
goto error;
}
zxdg_toplevel_decoration_v1_set_mode(output->zxdg_toplevel_decoration_v1,
ZXDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE);
}
wlr_wl_output_set_title(wlr_output, NULL);
xdg_toplevel_set_app_id(output->xdg_toplevel, "wlroots");
xdg_surface_add_listener(output->xdg_surface,
&xdg_surface_listener, output);
xdg_toplevel_add_listener(output->xdg_toplevel,
&xdg_toplevel_listener, output);
wl_surface_commit(output->surface);
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wl_display_roundtrip(output->backend->remote_display);
wl_list_insert(&backend->outputs, &output->link);
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wl_signal_emit_mutable(&backend->backend.events.new_output, wlr_output);
struct wlr_wl_seat *seat;
wl_list_for_each(seat, &backend->seats, link) {
if (seat->wl_pointer) {
create_pointer(seat, output);
}
}
// TODO: let the compositor do this bit
if (backend->activation_v1 && backend->activation_token) {
xdg_activation_v1_activate(backend->activation_v1,
backend->activation_token, output->surface);
}
return wlr_output;
error:
wlr_output_destroy(&output->wlr_output);
return NULL;
}
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void wlr_wl_output_set_title(struct wlr_output *output, const char *title) {
struct wlr_wl_output *wl_output = get_wl_output_from_output(output);
char wl_title[32];
if (title == NULL) {
if (snprintf(wl_title, sizeof(wl_title), "wlroots - %s", output->name) <= 0) {
return;
}
title = wl_title;
}
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xdg_toplevel_set_title(wl_output->xdg_toplevel, title);
wl_display_flush(wl_output->backend->remote_display);
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}
struct wl_surface *wlr_wl_output_get_surface(struct wlr_output *output) {
struct wlr_wl_output *wl_output = get_wl_output_from_output(output);
return wl_output->surface;
}