Implement pointer-constraints protocol in wlroots and rootston

4 files changed, 21 insertions, 2 deletions

diff --git a/include/rootston/cursor.h b/include/rootston/cursor.h
index 547fe333..b5bb682f 100644
--- a/include/rootston/cursor.h
+++ b/include/rootston/cursor.h
@@ -1,6 +1,7 @@
 #ifndef ROOTSTON_CURSOR_H
 #define ROOTSTON_CURSOR_H
 
+#include <wlr/types/wlr_pointer_constraints_v1.h>
 #include "rootston/seat.h"
 
 enum roots_cursor_mode {
@@ -14,6 +15,9 @@ struct roots_cursor {
 	struct roots_seat *seat;
 	struct wlr_cursor *cursor;
 
+	struct wlr_pointer_constraint_v1 *active_constraint;
+	pixman_region32_t confine; // invalid if active_constraint == NULL
+
 	const char *default_xcursor;
 
 	enum roots_cursor_mode mode;
@@ -45,6 +49,10 @@ struct roots_cursor {
 	struct wl_listener tool_button;
 
 	struct wl_listener request_set_cursor;
+
+	struct wl_listener focus_change;
+
+	struct wl_listener constraint_commit;
 };
 
 struct roots_cursor *roots_cursor_create(struct roots_seat *seat);
@@ -81,9 +89,17 @@ void roots_cursor_handle_tool_tip(struct roots_cursor *cursor,
 void roots_cursor_handle_request_set_cursor(struct roots_cursor *cursor,
 	struct wlr_seat_pointer_request_set_cursor_event *event);
 
+void roots_cursor_handle_focus_change(struct roots_cursor *cursor,
+	struct wlr_seat_pointer_focus_change_event *event);
+
+void roots_cursor_handle_constraint_commit(struct roots_cursor *cursor);
+
 void roots_cursor_update_position(struct roots_cursor *cursor,
 	uint32_t time);
 
 void roots_cursor_update_focus(struct roots_cursor *cursor);
 
+void roots_cursor_constrain(struct roots_cursor *cursor,
+	struct wlr_pointer_constraint_v1 *constraint, double sx, double sy);
+
 #endif
diff --git a/include/rootston/desktop.h b/include/rootston/desktop.h
index 89d8af4a..dac694d1 100644
--- a/include/rootston/desktop.h
+++ b/include/rootston/desktop.h
@@ -56,6 +56,7 @@ struct roots_desktop {
 	struct wlr_virtual_keyboard_manager_v1 *virtual_keyboard;
 	struct wlr_screencopy_manager_v1 *screencopy;
 	struct wlr_tablet_manager_v2 *tablet_v2;
+	struct wlr_pointer_constraints_v1 *pointer_constraints;
 
 	struct wl_listener new_output;
 	struct wl_listener layout_change;
@@ -67,6 +68,8 @@ struct roots_desktop {
 	struct wl_listener input_inhibit_activate;
 	struct wl_listener input_inhibit_deactivate;
 	struct wl_listener virtual_keyboard_new;
+	struct wl_listener constraint_create;
+	struct wl_listener constraint_destroy;
 
 #ifdef WLR_HAS_XWAYLAND
 	struct wlr_xwayland *xwayland;
diff --git a/include/rootston/input.h b/include/rootston/input.h
index 2cdb13e6..31810b4d 100644
--- a/include/rootston/input.h
+++ b/include/rootston/input.h
@@ -16,7 +16,7 @@ struct roots_input {
 
 	struct wl_listener new_input;
 
-	struct wl_list seats;
+	struct wl_list seats; // roots_seat::link
 };
 
 struct roots_input *input_create(struct roots_server *server,
diff --git a/include/rootston/seat.h b/include/rootston/seat.h
index c5e584b6..a3192d26 100644
--- a/include/rootston/seat.h
+++ b/include/rootston/seat.h
@@ -10,7 +10,7 @@ struct roots_seat {
 	struct roots_input *input;
 	struct wlr_seat *seat;
 	struct roots_cursor *cursor;
-	struct wl_list link;
+	struct wl_list link; // roots_input::seats
 
 	// coordinates of the first touch point if it exists
 	int32_t touch_id;