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cursor.c: Keep sending adjusted motion events while button is pressed

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This allows to keep dragging a scrollbar or selecting text even when
moving outside of the window. Fixes #241
This commit is contained in:
Consolatis 2022-02-26 01:21:39 +01:00 • committed by Johan Malm
parent 067b0e8798
commit befe66d93f
4 changed files with 34 additions and 0 deletions
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12
include/labwc.h
View file

@ -82,6 +82,18 @@ struct seat {
/* if set, views cannot receive focus */
struct wlr_layer_surface_v1 *focused_layer;
/**
* active_view will usually be NULL and is only set on button press
* while the mouse is over a view surface and reset to NULL on button
* release.
* It is used to send cursor motion events to a surface even though
* the cursor has left the surface in the meantime.
*
* This allows to keep dragging a scrollbar or selecting text even
* when moving outside of the window.
*/
struct view *active_view;
struct wl_client *active_client_while_inhibited;
struct wl_list inputs;
struct wl_listener new_input;

16
src/cursor.c
View file

@ -195,6 +195,15 @@ process_cursor_motion(struct server *server, uint32_t time)
} else if (server->input_mode == LAB_INPUT_STATE_RESIZE) {
process_cursor_resize(server, time);
return;
} else if (server->seat.active_view && !server->seat.drag_icon) {
/* Button has been pressed while over a view surface */
struct view *view = server->seat.active_view;
double sx = server->seat.cursor->x - view->x;
double sy = server->seat.cursor->y - view->y;
sx = sx < 0 ? 0 : (sx > view->w ? view->w : sx);
sy = sy < 0 ? 0 : (sy > view->h ? view->h : sy);
wlr_seat_pointer_notify_motion(server->seat.seat, time, sx, sy);
return;
}
/* Otherwise, find view under the pointer and send the event along */
@ -317,6 +326,7 @@ start_drag(struct wl_listener *listener, void *data)
{
struct seat *seat = wl_container_of(listener, seat, start_drag);
struct wlr_drag *wlr_drag = data;
seat->active_view = NULL;
seat->drag_icon = wlr_drag->icon;
wl_signal_add(&seat->drag_icon->events.destroy, &seat->destroy_drag);
}
@ -647,6 +657,8 @@ cursor_button(struct wl_listener *listener, void *data)
/* handle _release_ */
if (event->state == WLR_BUTTON_RELEASED) {
server->seat.active_view = NULL;
if (server->input_mode == LAB_INPUT_STATE_MENU) {
if (close_menu) {
if (server->menu_current) {
@ -674,6 +686,10 @@ cursor_button(struct wl_listener *listener, void *data)
}
/* Handle _press */
if (view_area == LAB_SSD_CLIENT) {
server->seat.active_view = view;
}
if (server->input_mode == LAB_INPUT_STATE_MENU) {
if (view_area != LAB_SSD_MENU) {
/* We close the menu on release so we don't leak a stray release */

3
src/xdg.c
View file

@ -85,6 +85,9 @@ handle_destroy(struct wl_listener *listener, void *data)
wlr_foreign_toplevel_handle_v1_destroy(view->toplevel_handle);
}
interactive_end(view);
if (view->server->seat.active_view == view) {
view->server->seat.active_view = NULL;
}
wl_list_remove(&view->link);
wl_list_remove(&view->destroy.link);
if (view->scene_tree) {

3
src/xwayland.c
View file

@ -99,6 +99,9 @@ handle_destroy(struct wl_listener *listener, void *data)
wlr_foreign_toplevel_handle_v1_destroy(view->toplevel_handle);
}
interactive_end(view);
if (view->server->seat.active_view == view) {
view->server->seat.active_view = NULL;
}
view->xwayland_surface = NULL;
wl_list_remove(&view->link);
wl_list_remove(&view->map.link);