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#include<stdio.h>
#include<stdlib.h>
#include<stdbool.h>
#include<unistd.h>
#include<string.h>
#include<time.h>
#include<cairo/cairo.h>
#include<wayland-server.h>
#include<wayland-client.h>
#include<wayland-client-protocol.h>
#include"wlr-layer-shell-unstable-v1-protocol.h"
#include"xdg-output-unstable-v1-protocol.h"
#include"xdg-shell-protocol.h"
#include"wlclock.h"
#include"output.h"
#include"misc.h"
#include"surface.h"
#include"buffer.h"
#include"render.h"
static void layer_surface_handle_configure (void *data,
struct zwlr_layer_surface_v1 *layer_surface, uint32_t serial,
uint32_t w, uint32_t h)
{
struct Wlclock_surface *surface = (struct Wlclock_surface *)data;
clocklog(1, "[surface] Layer surface configure request: output=%d w=%d h=%d serial=%d\n",
surface->output->global_name, w, h, serial);
zwlr_layer_surface_v1_ack_configure(layer_surface, serial);
bool dimensions_changed = false;
if ( w != (uint32_t)surface->dimensions.w )
{
/* A size of 0 means we are free to use whatever size we want.
* So let's just use the one the user configured.
*/
surface->dimensions.w = w == 0 ? context.dimensions.w : (int32_t)w;
dimensions_changed = true;
}
if ( h != (uint32_t)surface->dimensions.h )
{
surface->dimensions.h = h == 0 ? context.dimensions.h : (int32_t)h;
dimensions_changed = true;
}
if (dimensions_changed)
{
/* Try to fit into the space the compositor wants us to occupy
* while also keeping the center square and not changing the
* border sizes.
*/
int32_t size_a = (int32_t)w - context.border_left - context.border_right;
int32_t size_b = (int32_t)h - context.border_top - context.border_bottom;
surface->dimensions.center_size = size_a < size_b ? size_a : size_b;
if ( surface->dimensions.center_size < 10 )
surface->dimensions.center_size = 10;
/* The size of the layer surface and the positioning of the
* subsurface may need to be updated.
*/
zwlr_layer_surface_v1_set_size(surface->layer_surface,
surface->dimensions.w, surface->dimensions.h);
wl_subsurface_set_position(surface->subsurface,
surface->dimensions.center_x,
surface->dimensions.center_y);
}
/* We can only attach buffers to a surface after it has received a
* configure event. A new layer surface will get a configure event
* immediately. As a clean way to do the first render, we therefore
* always render on the first configure event.
*/
if ( dimensions_changed || !surface->configured )
{
surface->configured = true;
render_background_frame(surface);
render_hands_frame(surface);
wl_surface_commit(surface->hands_surface);
wl_surface_commit(surface->background_surface);
}
}
static void layer_surface_handle_closed (void *data, struct zwlr_layer_surface_v1 *layer_surface)
{
/* This event is received when the compositor closed our surface, for
* example because the output is was on disappeared. We now need to
* cleanup the surfaces remains. Should the output re-appear, then it
* will receive a new one.
*/
struct Wlclock_surface *surface = (struct Wlclock_surface *)data;
clocklog(1, "[surface] Layer surface has been closed: global_name=%d\n",
surface->output->global_name);
destroy_surface(surface);
}
const struct zwlr_layer_surface_v1_listener layer_surface_listener = {
.configure = layer_surface_handle_configure,
.closed = layer_surface_handle_closed
};
static int32_t get_exclusive_zone (struct Wlclock_surface *surface)
{
if ( context.exclusive_zone == 1 ) switch (context.anchor)
{
case ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM:
case ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP:
return surface->dimensions.h;
case ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT:
case ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT:
return surface->dimensions.w;
default:
return 0;
}
else
return context.exclusive_zone;
}
bool create_surface (struct Wlclock_output *output)
{
clocklog(1, "[surface] Creating surface: global_name=%d\n", output->global_name);
struct Wlclock_surface *surface = calloc(1, sizeof(struct Wlclock_surface));
if ( surface == NULL )
{
clocklog(0, "ERROR: Could not allocate.\n");
return false;
}
output->surface = surface;
surface->dimensions = context.dimensions;
surface->output = output;
surface->background_surface = NULL;
surface->hands_surface = NULL;
surface->layer_surface = NULL;
surface->configured = false;
surface->background_surface = wl_compositor_create_surface(context.compositor);
surface->layer_surface = zwlr_layer_shell_v1_get_layer_surface(
context.layer_shell, surface->background_surface,
output->wl_output, context.layer, context.namespace);
zwlr_layer_surface_v1_add_listener(surface->layer_surface,
&layer_surface_listener, surface);
surface->hands_surface = wl_compositor_create_surface(context.compositor);
surface->subsurface = wl_subcompositor_get_subsurface(
context.subcompositor, surface->hands_surface,
surface->background_surface);
/* Set up layer surface. */
zwlr_layer_surface_v1_set_size(surface->layer_surface,
surface->dimensions.w, surface->dimensions.h);
zwlr_layer_surface_v1_set_anchor(surface->layer_surface, context.anchor);
zwlr_layer_surface_v1_set_margin(surface->layer_surface,
context.margin_top, context.margin_right,
context.margin_bottom, context.margin_left);
zwlr_layer_surface_v1_set_exclusive_zone(surface->layer_surface,
get_exclusive_zone(surface));
if (! context.input)
{
struct wl_region *region = wl_compositor_create_region(context.compositor);
wl_surface_set_input_region(surface->background_surface, region);
wl_region_destroy(region);
}
/* Set up subsurface. */
wl_subsurface_set_position(surface->subsurface,
surface->dimensions.center_x, surface->dimensions.center_y);
struct wl_region *region = wl_compositor_create_region(context.compositor);
wl_surface_set_input_region(surface->hands_surface, region);
wl_region_destroy(region);
wl_surface_commit(surface->hands_surface);
wl_surface_commit(surface->background_surface);
return true;
}
void destroy_surface (struct Wlclock_surface *surface)
{
if ( surface == NULL )
return;
if ( surface->output != NULL )
surface->output->surface = NULL;
if ( surface->layer_surface != NULL )
zwlr_layer_surface_v1_destroy(surface->layer_surface);
if ( surface->subsurface != NULL )
wl_subsurface_destroy(surface->subsurface);
if ( surface->background_surface != NULL )
wl_surface_destroy(surface->background_surface);
if ( surface->hands_surface != NULL )
wl_surface_destroy(surface->hands_surface);
finish_buffer(&surface->background_buffers[0]);
finish_buffer(&surface->background_buffers[1]);
finish_buffer(&surface->hands_buffers[0]);
finish_buffer(&surface->hands_buffers[1]);
free(surface);
}
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