Added wlr-layer-shell support

This commit is contained in:
Keith Bowes 2022-01-30 17:37:54 -05:00
parent 1bf513d9d6
commit ef73951ce0
8 changed files with 381 additions and 9 deletions

View file

@ -5,7 +5,6 @@
#define _POSIX_C_SOURCE 200112L
#endif
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
@ -21,6 +20,8 @@ struct wb_output {
struct wlr_xdg_output_manager_v1 *manager;
struct wl_list layers[4];
struct wl_listener destroy;
struct wl_listener frame;

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@ -27,6 +27,7 @@
#include "waybox/cursor.h"
#include "decoration.h"
#include "layer_shell.h"
#include "waybox/output.h"
#include "waybox/seat.h"
@ -36,7 +37,7 @@ struct wb_server {
struct wlr_allocator *allocator;
struct wlr_backend *backend;
struct wlr_compositor *compositor;
struct wlr_output_layout *layout;
struct wlr_output_layout *output_layout;
struct wlr_renderer *renderer;
struct wb_cursor *cursor;
@ -48,7 +49,10 @@ struct wb_server {
uint32_t resize_edges;
struct wl_list views;
struct wlr_layer_shell_v1 *layer_shell;
struct wlr_xdg_shell *xdg_shell;
struct wl_listener new_layer_surface;
struct wl_listener new_xdg_surface;
struct wl_listener new_xdg_decoration;

View file

@ -199,7 +199,7 @@ struct wb_cursor *wb_cursor_create(struct wb_server *server) {
wl_signal_add(&server->seat->seat->events.request_set_cursor,
&cursor->request_cursor);
wlr_cursor_attach_output_layout(cursor->cursor, server->layout);
wlr_cursor_attach_output_layout(cursor->cursor, server->output_layout);
return cursor;
}

294
waybox/layer_shell.c Normal file
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@ -0,0 +1,294 @@
#include <wlr/types/wlr_layer_shell_v1.h>
#include "waybox/xdg_shell.h"
static void apply_exclusive(struct wlr_box *usable_area,
uint32_t anchor, int32_t exclusive,
int32_t margin_top, int32_t margin_right,
int32_t margin_bottom, int32_t margin_left) {
if (exclusive <= 0) {
return;
}
struct {
uint32_t anchors;
int *positive_axis;
int *negative_axis;
int margin;
} edges[] = {
{
.anchors =
ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP,
.positive_axis = &usable_area->y,
.negative_axis = &usable_area->height,
.margin = margin_top,
},
{
.anchors =
ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM,
.positive_axis = NULL,
.negative_axis = &usable_area->height,
.margin = margin_bottom,
},
{
.anchors =
ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP |
ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM,
.positive_axis = &usable_area->x,
.negative_axis = &usable_area->width,
.margin = margin_left,
},
{
.anchors =
ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP |
ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM,
.positive_axis = NULL,
.negative_axis = &usable_area->width,
.margin = margin_right,
},
};
for (size_t i = 0; i < sizeof(edges) / sizeof(edges[0]); ++i) {
if ((anchor & edges[i].anchors) == edges[i].anchors) {
if (edges[i].positive_axis) {
*edges[i].positive_axis += exclusive + edges[i].margin;
}
if (edges[i].negative_axis) {
*edges[i].negative_axis -= exclusive + edges[i].margin;
}
}
}
}
static void arrange_layer(struct wlr_output *output,
struct wl_list *list /* struct *wb_layer_surface */,
struct wlr_box *usable_area, bool exclusive) {
struct wb_layer_surface *wb_surface;
struct wlr_box full_area = { 0 };
wlr_output_effective_resolution(output,
&full_area.width, &full_area.height);
wl_list_for_each_reverse(wb_surface, list, link) {
struct wlr_layer_surface_v1 *layer = wb_surface->layer_surface;
struct wlr_layer_surface_v1_state *state = &layer->current;
if (exclusive != (state->exclusive_zone > 0)) {
continue;
}
struct wlr_box bounds;
if (state->exclusive_zone == -1) {
bounds = full_area;
} else {
bounds = *usable_area;
}
struct wlr_box box = {
.width = state->desired_width,
.height = state->desired_height
};
/* Horizontal axis */
const uint32_t both_horiz = ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT
| ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
if ((state->anchor & both_horiz) && box.width == 0) {
box.x = bounds.x;
box.width = bounds.width;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT)) {
box.x = bounds.x;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT)) {
box.x = bounds.x + (bounds.width - box.width);
} else {
box.x = bounds.x + ((bounds.width / 2) - (box.width / 2));
}
/* Vertical axis */
const uint32_t both_vert = ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP
| ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
if ((state->anchor & both_vert) && box.height == 0) {
box.y = bounds.y;
box.height = bounds.height;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP)) {
box.y = bounds.y;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM)) {
box.y = bounds.y + (bounds.height - box.height);
} else {
box.y = bounds.y + ((bounds.height / 2) - (box.height / 2));
}
/* Margin */
if ((state->anchor & both_horiz) == both_horiz) {
box.x += state->margin.left;
box.width -= state->margin.left + state->margin.right;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT)) {
box.x += state->margin.left;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT)) {
box.x -= state->margin.right;
}
if ((state->anchor & both_vert) == both_vert) {
box.y += state->margin.top;
box.height -= state->margin.top + state->margin.bottom;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP)) {
box.y += state->margin.top;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM)) {
box.y -= state->margin.bottom;
}
if (box.width < 0 || box.height < 0) {
wlr_layer_surface_v1_destroy(layer);
continue;
}
/* Apply */
wb_surface->geo = box;
apply_exclusive(usable_area, state->anchor, state->exclusive_zone,
state->margin.top, state->margin.right,
state->margin.bottom, state->margin.left);
wlr_layer_surface_v1_configure(layer, box.width, box.height);
}
}
void arrange_layers(struct wb_output *output) {
struct wlr_box usable_area = { 0 };
wlr_output_effective_resolution(output->wlr_output,
&usable_area.width, &usable_area.height);
/* Arrange exclusive surfaces from top->bottom */
arrange_layer(output->wlr_output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY],
&usable_area, true);
arrange_layer(output->wlr_output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
&usable_area, true);
arrange_layer(output->wlr_output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
&usable_area, true);
arrange_layer(output->wlr_output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND],
&usable_area, true);
/* Arrange non-exlusive surfaces from top->bottom */
arrange_layer(output->wlr_output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY],
&usable_area, false);
arrange_layer(output->wlr_output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
&usable_area, false);
arrange_layer(output->wlr_output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
&usable_area, false);
arrange_layer(output->wlr_output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND],
&usable_area, false);
/* Find topmost keyboard interactive layer, if such a layer exists */
uint32_t layers_above_shell[] = {
ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY,
ZWLR_LAYER_SHELL_V1_LAYER_TOP,
};
size_t nlayers = sizeof(layers_above_shell) / sizeof(layers_above_shell[0]);
struct wb_layer_surface *layer, *topmost = NULL;
for (size_t i = 0; i < nlayers; ++i) {
wl_list_for_each_reverse(layer,
&output->layers[layers_above_shell[i]], link) {
if (layer->layer_surface->current.keyboard_interactive) {
topmost = layer;
break;
}
}
if (topmost != NULL) {
break;
}
}
/* Focus the topmost layer */
if (topmost != NULL)
{
struct wb_view *view =
wl_container_of(output->server->views.next, view, link);
focus_view(view, view->xdg_surface->surface);
}
}
static void handle_output_destroy(struct wl_listener *listener, void *data) {
struct wb_layer_surface *layer =
wl_container_of(listener, layer, output_destroy);
layer->layer_surface->output = NULL;
wl_list_remove(&layer->output_destroy.link);
wlr_layer_surface_v1_destroy(layer->layer_surface);
}
static void handle_surface_commit(struct wl_listener *listener, void *data) {
struct wb_layer_surface *layer =
wl_container_of(listener, layer, surface_commit);
struct wlr_layer_surface_v1 *layer_surface = layer->layer_surface;
struct wlr_output *wlr_output = layer_surface->output;
if (wlr_output != NULL) {
struct wb_output *output = wlr_output->data;
arrange_layers(output);
}
}
static void handle_destroy(struct wl_listener *listener, void *data) {
struct wb_layer_surface *layer = wl_container_of(
listener, layer, destroy);
wl_list_remove(&layer->link);
wl_list_remove(&layer->destroy.link);
wl_list_remove(&layer->map.link);
wl_list_remove(&layer->surface_commit.link);
if (layer->layer_surface->output) {
wl_list_remove(&layer->output_destroy.link);
arrange_layers((struct wb_output *)layer->layer_surface->output->data);
}
free(layer);
}
static void handle_map(struct wl_listener *listener, void *data) {
struct wlr_layer_surface_v1 *layer_surface = data;
wlr_surface_send_enter(layer_surface->surface, layer_surface->output);
}
void server_new_layer_surface(struct wl_listener *listener, void *data) {
struct wb_server *server = wl_container_of(
listener, server, new_layer_surface);
struct wlr_layer_surface_v1 *layer_surface = data;
if (!layer_surface->output) {
struct wlr_output *output = wlr_output_layout_output_at(
server->output_layout, server->cursor->cursor->x, server->cursor->cursor->y);
layer_surface->output = output;
}
struct wb_output *output = layer_surface->output->data;
struct wb_layer_surface *wb_surface =
calloc(1, sizeof(struct wb_layer_surface));
if (!wb_surface) {
return;
}
wb_surface->layer_surface = layer_surface;
layer_surface->data = wb_surface;
wb_surface->server = server;
wb_surface->surface_commit.notify = handle_surface_commit;
wl_signal_add(&layer_surface->surface->events.commit,
&wb_surface->surface_commit);
wb_surface->output_destroy.notify = handle_output_destroy;
wl_signal_add(&layer_surface->output->events.destroy,
&wb_surface->output_destroy);
wb_surface->destroy.notify = handle_destroy;
wl_signal_add(&layer_surface->events.destroy, &wb_surface->destroy);
wb_surface->map.notify = handle_map;
wl_signal_add(&layer_surface->events.map, &wb_surface->map);
/* TODO: popups */
/* TODO: Listen for subsurfaces */
wl_list_insert(&output->layers[layer_surface->pending.layer], &wb_surface->link);
/* Temporarily set the layer's current state to pending
* So that we can easily arrange it */
struct wlr_layer_surface_v1_state old_state = layer_surface->current;
layer_surface->current = layer_surface->pending;
arrange_layers(output);
layer_surface->current = old_state;
}
void init_layer_shell(struct wb_server *server)
{
server->layer_shell = wlr_layer_shell_v1_create(server->wl_display);
server->new_layer_surface.notify = server_new_layer_surface;
wl_signal_add(&server->layer_shell->events.new_surface,
&server->new_layer_surface);
}

22
waybox/layer_shell.h Normal file
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@ -0,0 +1,22 @@
#ifndef _WB_LAYERS_H
#define _WB_LAYERS_H
#include <wlr/types/wlr_layer_shell_v1.h>
struct wb_server;
struct wb_layer_surface {
struct wlr_layer_surface_v1 *layer_surface;
struct wb_server *server;
struct wl_list link;
struct wl_listener destroy;
struct wl_listener map;
struct wl_listener surface_commit;
struct wl_listener output_destroy;
struct wlr_box geo;
};
void init_layer_shell(struct wb_server *server);
#endif

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@ -1,6 +1,7 @@
wb_src = files(
'cursor.c',
'decoration.c',
'layer_shell.c',
'main.c',
'output.c',
'seat.c',

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@ -31,7 +31,7 @@ static void render_surface(struct wlr_surface *surface,
* output-local coordinates, or (2000 - 1920). */
double ox = 0, oy = 0;
wlr_output_layout_output_coords(
view->server->layout, output, &ox, &oy);
view->server->output_layout, output, &ox, &oy);
ox += view->x + sx, oy += view->y + sy;
/* We also have to apply the scale factor for HiDPI outputs. This is only
@ -68,6 +68,43 @@ static void render_surface(struct wlr_surface *surface,
wlr_surface_send_frame_done(surface, rdata->when);
}
static void render_layer_surface(struct wlr_surface *surface,
int sx, int sy, void *data) {
struct wb_layer_surface *layer_surface = data;
struct wlr_texture *texture = wlr_surface_get_texture(surface);
if (texture == NULL) {
return;
}
struct wlr_output *output = layer_surface->layer_surface->output;
double ox = 0, oy = 0;
wlr_output_layout_output_coords(
layer_surface->server->output_layout, output, &ox, &oy);
ox += layer_surface->geo.x + sx, oy += layer_surface->geo.y + sy;
float matrix[9];
enum wl_output_transform transform =
wlr_output_transform_invert(surface->current.transform);
struct wlr_box box;
memcpy(&box, &layer_surface->geo, sizeof(struct wlr_box));
wlr_matrix_project_box(matrix, &box, transform, 0,
output->transform_matrix);
wlr_render_texture_with_matrix(layer_surface->server->renderer,
texture, matrix, 1);
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
wlr_surface_send_frame_done(surface, &now);
}
static void render_layer(
struct wb_output *output, struct wl_list *layer_surfaces) {
struct wb_layer_surface *layer_surface;
wl_list_for_each(layer_surface, layer_surfaces, link) {
struct wlr_layer_surface_v1 *wlr_layer_surface_v1 =
layer_surface->layer_surface;
wlr_surface_for_each_surface(wlr_layer_surface_v1->surface,
render_layer_surface, layer_surface);
}
}
void output_frame_notify(struct wl_listener *listener, void *data) {
struct wb_output *output = wl_container_of(listener, output, frame);
struct wlr_renderer *renderer = output->server->renderer;
@ -86,6 +123,9 @@ void output_frame_notify(struct wl_listener *listener, void *data) {
float color[4] = {0.4f, 0.4f, 0.4f, 1.0f};
wlr_renderer_clear(renderer, color);
render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND]);
render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM]);
struct wb_view *view;
wl_list_for_each_reverse(view, &output->server->views, link) {
if (!view->mapped)
@ -103,6 +143,9 @@ void output_frame_notify(struct wl_listener *listener, void *data) {
render_surface, &rdata);
}
render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP]);
render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY]);
wlr_output_render_software_cursors(output->wlr_output, NULL);
wlr_renderer_end(renderer);
wlr_output_commit(output->wlr_output);
@ -110,7 +153,7 @@ void output_frame_notify(struct wl_listener *listener, void *data) {
void output_destroy_notify(struct wl_listener *listener, void *data) {
struct wb_output *output = wl_container_of(listener, output, destroy);
wlr_output_layout_remove(output->server->layout, output->wlr_output);
wlr_output_layout_remove(output->server->output_layout, output->wlr_output);
wl_list_remove(&output->link);
wl_list_remove(&output->destroy.link);
wl_list_remove(&output->frame.link);
@ -142,16 +185,22 @@ void new_output_notify(struct wl_listener *listener, void *data) {
struct wb_output *output = calloc(1, sizeof(struct wb_output));
output->server = server;
output->wlr_output = wlr_output;
wlr_output->data = output;
wl_list_insert(&server->outputs, &output->link);
wl_list_init(&output->layers[0]);
wl_list_init(&output->layers[1]);
wl_list_init(&output->layers[2]);
wl_list_init(&output->layers[3]);
output->destroy.notify = output_destroy_notify;
wl_signal_add(&wlr_output->events.destroy, &output->destroy);
output->frame.notify = output_frame_notify;
wl_signal_add(&wlr_output->events.frame, &output->frame);
wlr_output_layout_add_auto(server->layout, wlr_output);
wlr_output_layout_add_auto(server->output_layout, wlr_output);
wlr_output_create_global(wlr_output);
output->manager = wlr_xdg_output_manager_v1_create(server->wl_display,
server->layout);
server->output_layout);
}

View file

@ -34,7 +34,7 @@ bool wb_create_backend(struct wb_server* server) {
server->compositor = wlr_compositor_create(server->wl_display,
server->renderer);
server->layout = wlr_output_layout_create();
server->output_layout = wlr_output_layout_create();
server->seat = wb_seat_create(server);
server->cursor = wb_cursor_create(server);
@ -70,6 +70,7 @@ bool wb_start_server(struct wb_server* server) {
wlr_data_device_manager_create(server->wl_display);
wl_list_init(&server->views);
init_xdg_decoration(server);
init_layer_shell(server);
init_xdg_shell(server);
return true;
@ -81,7 +82,7 @@ bool wb_terminate(struct wb_server* server) {
wb_seat_destroy(server->seat);
wl_display_destroy_clients(server->wl_display);
wl_display_destroy(server->wl_display);
wlr_output_layout_destroy(server->layout);
wlr_output_layout_destroy(server->output_layout);
wlr_log(WLR_INFO, "%s", _("Display destroyed"));