344 lines
11 KiB
C
344 lines
11 KiB
C
#include <assert.h>
|
|
#include <stdbool.h>
|
|
#include <stdlib.h>
|
|
#include <wayland-server.h>
|
|
#include <wlr/types/wlr_box.h>
|
|
#include <wlr/types/wlr_surface.h>
|
|
#include <wlr/types/wlr_layer_shell.h>
|
|
#include <wlr/util/log.h>
|
|
#include "rootston/desktop.h"
|
|
#include "rootston/layers.h"
|
|
#include "rootston/output.h"
|
|
#include "rootston/server.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 wlr_box *usable_area, bool exclusive) {
|
|
struct roots_layer_surface *roots_surface;
|
|
struct wlr_box full_area = { 0 };
|
|
wlr_output_effective_resolution(output,
|
|
&full_area.width, &full_area.height);
|
|
wl_list_for_each(roots_surface, list, link) {
|
|
struct wlr_layer_surface *layer = roots_surface->layer_surface;
|
|
struct wlr_layer_surface_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) {
|
|
// TODO: Bubble up a protocol error?
|
|
wlr_layer_surface_close(layer);
|
|
continue;
|
|
}
|
|
// Apply
|
|
roots_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_configure(layer, box.width, box.height);
|
|
}
|
|
}
|
|
|
|
void arrange_layers(struct roots_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);
|
|
memcpy(&output->usable_area, &usable_area, sizeof(struct wlr_box));
|
|
|
|
struct roots_view *view;
|
|
wl_list_for_each(view, &output->desktop->views, link) {
|
|
if (view->maximized) {
|
|
view_arrange_maximized(view);
|
|
}
|
|
}
|
|
|
|
// 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 roots_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;
|
|
}
|
|
}
|
|
|
|
struct roots_input *input = output->desktop->server->input;
|
|
struct roots_seat *seat;
|
|
wl_list_for_each(seat, &input->seats, link) {
|
|
roots_seat_set_focus_layer(seat,
|
|
topmost ? topmost->layer_surface : NULL);
|
|
}
|
|
}
|
|
|
|
static void handle_output_destroy(struct wl_listener *listener, void *data) {
|
|
struct roots_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_close(layer->layer_surface);
|
|
}
|
|
|
|
static void handle_surface_commit(struct wl_listener *listener, void *data) {
|
|
struct roots_layer_surface *layer =
|
|
wl_container_of(listener, layer, surface_commit);
|
|
struct wlr_layer_surface *layer_surface = layer->layer_surface;
|
|
struct wlr_output *wlr_output = layer_surface->output;
|
|
if (wlr_output != NULL) {
|
|
struct roots_output *output = wlr_output->data;
|
|
struct wlr_box old_geo = layer->geo;
|
|
arrange_layers(output);
|
|
if (memcmp(&old_geo, &layer->geo, sizeof(struct wlr_box)) != 0) {
|
|
output_damage_whole_local_surface(output, layer_surface->surface,
|
|
old_geo.x, old_geo.y, 0);
|
|
output_damage_whole_local_surface(output, layer_surface->surface,
|
|
layer->geo.x, layer->geo.y, 0);
|
|
} else {
|
|
output_damage_from_local_surface(output, layer_surface->surface,
|
|
layer->geo.x, layer->geo.y, 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void unmap(struct wlr_layer_surface *layer_surface) {
|
|
struct roots_layer_surface *layer = layer_surface->data;
|
|
struct wlr_output *wlr_output = layer_surface->output;
|
|
if (wlr_output != NULL) {
|
|
struct roots_output *output = wlr_output->data;
|
|
wlr_output_damage_add_box(output->damage, &layer->geo);
|
|
}
|
|
}
|
|
|
|
static void handle_destroy(struct wl_listener *listener, void *data) {
|
|
struct roots_layer_surface *layer = wl_container_of(
|
|
listener, layer, destroy);
|
|
if (layer->layer_surface->mapped) {
|
|
unmap(layer->layer_surface);
|
|
}
|
|
wl_list_remove(&layer->link);
|
|
wl_list_remove(&layer->destroy.link);
|
|
wl_list_remove(&layer->map.link);
|
|
wl_list_remove(&layer->unmap.link);
|
|
wl_list_remove(&layer->surface_commit.link);
|
|
wl_list_remove(&layer->output_destroy.link);
|
|
arrange_layers((struct roots_output *)layer->layer_surface->output->data);
|
|
free(layer);
|
|
}
|
|
|
|
static void handle_map(struct wl_listener *listener, void *data) {
|
|
struct wlr_layer_surface *layer_surface = data;
|
|
struct roots_layer_surface *layer = layer_surface->data;
|
|
struct wlr_output *wlr_output = layer_surface->output;
|
|
struct roots_output *output = wlr_output->data;
|
|
wlr_output_damage_add_box(output->damage, &layer->geo);
|
|
wlr_surface_send_enter(layer_surface->surface, wlr_output);
|
|
}
|
|
|
|
static void handle_unmap(struct wl_listener *listener, void *data) {
|
|
struct roots_layer_surface *layer = wl_container_of(
|
|
listener, layer, unmap);
|
|
unmap(layer->layer_surface);
|
|
}
|
|
|
|
void handle_layer_shell_surface(struct wl_listener *listener, void *data) {
|
|
struct wlr_layer_surface *layer_surface = data;
|
|
struct roots_desktop *desktop =
|
|
wl_container_of(listener, desktop, layer_shell_surface);
|
|
wlr_log(L_DEBUG, "new layer surface: namespace %s layer %d anchor %d "
|
|
"size %dx%d margin %d,%d,%d,%d",
|
|
layer_surface->namespace, layer_surface->layer, layer_surface->layer,
|
|
layer_surface->client_pending.desired_width,
|
|
layer_surface->client_pending.desired_height,
|
|
layer_surface->client_pending.margin.top,
|
|
layer_surface->client_pending.margin.right,
|
|
layer_surface->client_pending.margin.bottom,
|
|
layer_surface->client_pending.margin.left);
|
|
|
|
struct roots_layer_surface *roots_surface =
|
|
calloc(1, sizeof(struct roots_layer_surface));
|
|
if (!roots_surface) {
|
|
return;
|
|
}
|
|
|
|
roots_surface->surface_commit.notify = handle_surface_commit;
|
|
wl_signal_add(&layer_surface->surface->events.commit,
|
|
&roots_surface->surface_commit);
|
|
|
|
roots_surface->output_destroy.notify = handle_output_destroy;
|
|
wl_signal_add(&layer_surface->output->events.destroy,
|
|
&roots_surface->output_destroy);
|
|
|
|
roots_surface->destroy.notify = handle_destroy;
|
|
wl_signal_add(&layer_surface->events.destroy, &roots_surface->destroy);
|
|
roots_surface->map.notify = handle_map;
|
|
wl_signal_add(&layer_surface->events.map, &roots_surface->map);
|
|
roots_surface->unmap.notify = handle_unmap;
|
|
wl_signal_add(&layer_surface->events.unmap, &roots_surface->unmap);
|
|
// TODO: Listen for subsurfaces
|
|
|
|
roots_surface->layer_surface = layer_surface;
|
|
layer_surface->data = roots_surface;
|
|
|
|
struct roots_output *output = layer_surface->output->data;
|
|
wl_list_insert(&output->layers[layer_surface->layer], &roots_surface->link);
|
|
|
|
// Temporarily set the layer's current state to client_pending
|
|
// So that we can easily arrange it
|
|
struct wlr_layer_surface_state old_state = layer_surface->current;
|
|
layer_surface->current = layer_surface->client_pending;
|
|
|
|
arrange_layers(output);
|
|
|
|
layer_surface->current = old_state;
|
|
}
|