xwm: Maximize windows when double-clicking on title bar

Signed-off-by: Louis-Francis Ratté-Boulianne <lfrb@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>

diff --git a/xwayland/window-manager.c b/xwayland/window-manager.c
index f31e3c7..a6b6a39 100644 (file)
--- a/xwayland/window-manager.c
+++ b/xwayland/window-manager.c
@@ -161,6 +161,8 @@ struct weston_wm_window {
        struct weston_output_weak_ref legacy_fullscreen_output;
        int saved_width, saved_height;
        int decorate;
+       uint32_t last_button_time;
+       int did_double;
        int override_redirect;
        int fullscreen;
        int has_alpha;
@@ -1930,6 +1932,7 @@ weston_wm_window_close(struct weston_wm_window *window, xcb_timestamp_t time)
        }
 }
 
+#define DOUBLE_CLICK_PERIOD 250
 static void
 weston_wm_handle_button(struct weston_wm *wm, xcb_generic_event_t *event)
 {
@@ -1942,6 +1945,7 @@ weston_wm_handle_button(struct weston_wm *wm, xcb_generic_event_t *event)
        enum theme_location location;
        enum wl_pointer_button_state button_state;
        uint32_t button_id;
+       uint32_t double_click = 0;
 
        wm_log("XCB_BUTTON_%s (detail %d)\n",
               button->response_type == XCB_BUTTON_PRESS ?
@@ -1962,6 +1966,19 @@ weston_wm_handle_button(struct weston_wm *wm, xcb_generic_event_t *event)
                WL_POINTER_BUTTON_STATE_RELEASED;
        button_id = button->detail == 1 ? BTN_LEFT : BTN_RIGHT;
 
+       if (button_state == WL_POINTER_BUTTON_STATE_PRESSED) {
+               if (button->time - window->last_button_time <= DOUBLE_CLICK_PERIOD) {
+                       double_click = 1;
+                       window->did_double = 1;
+               } else
+                       window->did_double = 0;
+
+               window->last_button_time = button->time;
+       } else if (window->did_double == 1) {
+               double_click = 1;
+               window->did_double = 0;
+       }
+
        /* Make sure we're looking at the right location.  The frame
         * could have received a motion event from a pointer from a
         * different wl_seat, but under X it looks like our core
@@ -1969,8 +1986,13 @@ weston_wm_handle_button(struct weston_wm *wm, xcb_generic_event_t *event)
         * location before deciding what to do. */
        location = frame_pointer_motion(window->frame, NULL,
                                        button->event_x, button->event_y);
-       location = frame_pointer_button(window->frame, NULL,
-                                       button_id, button_state);
+       if (double_click)
+               location = frame_double_click(window->frame, NULL,
+                                             button_id, button_state);
+       else
+               location = frame_pointer_button(window->frame, NULL,
+                                               button_id, button_state);
+
        if (frame_status(window->frame) & FRAME_STATUS_REPAINT)
                weston_wm_window_schedule_repaint(window);