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wlr_scene: Add drag icon helper

This commit is contained in:
Alexander Orzechowski 2022-11-12 19:31:55 -05:00
parent 9f793d3503
commit c8a5dfcc87
3 changed files with 102 additions and 0 deletions
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8
include/wlr/types/wlr_scene.h
View File

@ -28,6 +28,7 @@ struct wlr_output;
struct wlr_output_layout;
struct wlr_xdg_surface;
struct wlr_layer_surface_v1;
struct wlr_drag_icon;
struct wlr_scene_node;
struct wlr_scene_buffer;
@ -472,4 +473,11 @@ void wlr_scene_layer_surface_v1_configure(
struct wlr_scene_layer_surface_v1 *scene_layer_surface,
const struct wlr_box *full_area, struct wlr_box *usable_area);
/**
* Add a node displaying a drag icon and all its sub-surfaces to the
* scene-graph.
*/
struct wlr_scene_tree *wlr_scene_drag_icon_create(
struct wlr_scene_tree *parent, struct wlr_drag_icon *drag_icon);
#endif

1
types/meson.build
View File

@ -8,6 +8,7 @@ wlr_files += files(
'output/render.c',
'output/state.c',
'output/transform.c',
'scene/drag_icon.c',
'scene/subsurface_tree.c',
'scene/surface.c',
'scene/wlr_scene.c',

93
types/scene/drag_icon.c Normal file
View File

@ -0,0 +1,93 @@
#include <stdlib.h>
#include <wlr/types/wlr_scene.h>
#include <wlr/types/wlr_data_device.h>
struct wlr_scene_drag_icon {
struct wlr_scene_tree *tree;
struct wlr_scene_tree *surface_tree;
struct wlr_drag_icon *drag_icon;
struct wl_listener tree_destroy;
struct wl_listener drag_icon_surface_commit;
struct wl_listener drag_icon_map;
struct wl_listener drag_icon_unmap;
struct wl_listener drag_icon_destroy;
};
static void drag_icon_handle_surface_commit(struct wl_listener *listener, void *data) {
struct wlr_scene_drag_icon *icon =
wl_container_of(listener, icon, drag_icon_surface_commit);
struct wlr_surface *surface = icon->drag_icon->surface;
wlr_scene_node_set_position(&icon->surface_tree->node,
surface->sx, surface->sy);
}
static void drag_icon_handle_map(struct wl_listener *listener, void *data) {
struct wlr_scene_drag_icon *icon =
wl_container_of(listener, icon, drag_icon_map);
wlr_scene_node_set_enabled(&icon->tree->node, true);
}
static void drag_icon_handle_unmap(struct wl_listener *listener, void *data) {
struct wlr_scene_drag_icon *icon =
wl_container_of(listener, icon, drag_icon_unmap);
wlr_scene_node_set_enabled(&icon->tree->node, false);
}
static void drag_icon_handle_tree_destroy(struct wl_listener *listener, void *data) {
struct wlr_scene_drag_icon *icon =
wl_container_of(listener, icon, tree_destroy);
wl_list_remove(&icon->tree_destroy.link);
wl_list_remove(&icon->drag_icon_surface_commit.link);
wl_list_remove(&icon->drag_icon_map.link);
wl_list_remove(&icon->drag_icon_unmap.link);
wl_list_remove(&icon->drag_icon_destroy.link);
free(icon);
}
static void drag_icon_handle_destroy(struct wl_listener *listener, void *data) {
struct wlr_scene_drag_icon *icon =
wl_container_of(listener, icon, drag_icon_destroy);
wlr_scene_node_destroy(&icon->tree->node);
}
struct wlr_scene_tree *wlr_scene_drag_icon_create(
struct wlr_scene_tree *parent, struct wlr_drag_icon *drag_icon) {
struct wlr_scene_drag_icon *icon = calloc(1, sizeof(*icon));
if (!icon) {
return NULL;
}
icon->drag_icon = drag_icon;
icon->tree = wlr_scene_tree_create(parent);
if (!icon->tree) {
free(icon);
return NULL;
}
icon->surface_tree = wlr_scene_subsurface_tree_create(
icon->tree, drag_icon->surface);
if (!icon->surface_tree) {
wlr_scene_node_destroy(&icon->tree->node);
free(icon);
return NULL;
}
wlr_scene_node_set_position(&icon->surface_tree->node,
drag_icon->surface->sx, drag_icon->surface->sy);
wlr_scene_node_set_enabled(&icon->tree->node, drag_icon->mapped);
icon->tree_destroy.notify = drag_icon_handle_tree_destroy;
wl_signal_add(&icon->tree->node.events.destroy, &icon->tree_destroy);
icon->drag_icon_surface_commit.notify = drag_icon_handle_surface_commit;
wl_signal_add(&drag_icon->surface->events.commit, &icon->drag_icon_surface_commit);
icon->drag_icon_map.notify = drag_icon_handle_map;
wl_signal_add(&drag_icon->events.map, &icon->drag_icon_map);
icon->drag_icon_unmap.notify = drag_icon_handle_unmap;
wl_signal_add(&drag_icon->events.unmap, &icon->drag_icon_unmap);
icon->drag_icon_destroy.notify = drag_icon_handle_destroy;
wl_signal_add(&drag_icon->events.destroy, &icon->drag_icon_destroy);
return icon->tree;
}