Implement tablet tool support

1 files changed, 59 insertions, 8 deletions

diff --git a/sway/input/cursor.c b/sway/input/cursor.c
index 6db615b1..cdded1c7 100644
--- a/sway/input/cursor.c
+++ b/sway/input/cursor.c
@@ -179,10 +179,8 @@ static void handle_cursor_motion_absolute(
         cursor_send_pointer_motion(cursor, event->time_msec);
 }
 
-static void handle_cursor_button(struct wl_listener *listener, void *data) {
-        struct sway_cursor *cursor = wl_container_of(listener, cursor, button);
-        struct wlr_event_pointer_button *event = data;
-
+static void dispatch_cursor_button(struct sway_cursor *cursor,
+                uint32_t time_msec, uint32_t button, enum wlr_button_state state) {
         struct wlr_surface *surface = NULL;
         double sx, sy;
         struct sway_container *cont =
@@ -215,8 +213,15 @@ static void handle_cursor_button(struct wl_listener *listener, void *data) {
                 seat_set_focus(cursor->seat, cont);
         }
 
-        wlr_seat_pointer_notify_button(cursor->seat->wlr_seat, event->time_msec,
-                event->button, event->state);
+        wlr_seat_pointer_notify_button(cursor->seat->wlr_seat,
+                        time_msec, button, state);
+}
+
+static void handle_cursor_button(struct wl_listener *listener, void *data) {
+        struct sway_cursor *cursor = wl_container_of(listener, cursor, button);
+        struct wlr_event_pointer_button *event = data;
+        dispatch_cursor_button(cursor,
+                        event->time_msec, event->button, event->state);
 }
 
 static void handle_cursor_axis(struct wl_listener *listener, void *data) {
@@ -248,13 +253,53 @@ static void handle_touch_motion(struct wl_listener *listener, void *data) {
 static void handle_tool_axis(struct wl_listener *listener, void *data) {
         struct sway_cursor *cursor = wl_container_of(listener, cursor, tool_axis);
         struct wlr_event_tablet_tool_axis *event = data;
-        wlr_log(L_DEBUG, "TODO: handle tool axis event: %p", event);
+
+        if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_X) &&
+                        (event->updated_axes & WLR_TABLET_TOOL_AXIS_Y)) {
+                wlr_cursor_warp_absolute(cursor->cursor, event->device,
+                        event->x, event->y);
+                cursor_update_position(cursor);
+                cursor_send_pointer_motion(cursor, event->time_msec);
+        } else if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_X)) {
+                wlr_cursor_warp_absolute(cursor->cursor, event->device, event->x, -1);
+                cursor_update_position(cursor);
+                cursor_send_pointer_motion(cursor, event->time_msec);
+        } else if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_Y)) {
+                wlr_cursor_warp_absolute(cursor->cursor, event->device, -1, event->y);
+                cursor_update_position(cursor);
+                cursor_send_pointer_motion(cursor, event->time_msec);
+        }
 }
 
 static void handle_tool_tip(struct wl_listener *listener, void *data) {
         struct sway_cursor *cursor = wl_container_of(listener, cursor, tool_tip);
         struct wlr_event_tablet_tool_tip *event = data;
-        wlr_log(L_DEBUG, "TODO: handle tool tip event: %p", event);
+        dispatch_cursor_button(cursor, event->time_msec,
+                        BTN_LEFT, event->state == WLR_TABLET_TOOL_TIP_DOWN ?
+                                WLR_BUTTON_PRESSED : WLR_BUTTON_RELEASED);
+}
+
+static void handle_tool_button(struct wl_listener *listener, void *data) {
+        struct sway_cursor *cursor = wl_container_of(listener, cursor, tool_button);
+        struct wlr_event_tablet_tool_button *event = data;
+        // TODO: the user may want to configure which tool buttons are mapped to
+        // which simulated pointer buttons
+        switch (event->state) {
+        case WLR_BUTTON_PRESSED:
+                if (cursor->tool_buttons == 0) {
+                        dispatch_cursor_button(cursor,
+                                        event->time_msec, BTN_RIGHT, event->state);
+                }
+                cursor->tool_buttons++;
+                break;
+        case WLR_BUTTON_RELEASED:
+                if (cursor->tool_buttons == 1) {
+                        dispatch_cursor_button(cursor,
+                                        event->time_msec, BTN_RIGHT, event->state);
+                }
+                cursor->tool_buttons--;
+                break;
+        }
 }
 
 static void handle_request_set_cursor(struct wl_listener *listener,
@@ -332,6 +377,9 @@ struct sway_cursor *sway_cursor_create(struct sway_seat *seat) {
                 &cursor->touch_motion);
         cursor->touch_motion.notify = handle_touch_motion;
 
+        // TODO: tablet protocol support
+        // Note: We should emulate pointer events for clients that don't support the
+        // tablet protocol when the time comes
         wl_signal_add(&wlr_cursor->events.tablet_tool_axis,
                 &cursor->tool_axis);
         cursor->tool_axis.notify = handle_tool_axis;
@@ -339,6 +387,9 @@ struct sway_cursor *sway_cursor_create(struct sway_seat *seat) {
         wl_signal_add(&wlr_cursor->events.tablet_tool_tip, &cursor->tool_tip);
         cursor->tool_tip.notify = handle_tool_tip;
 
+        wl_signal_add(&wlr_cursor->events.tablet_tool_button, &cursor->tool_button);
+        cursor->tool_button.notify = handle_tool_button;
+
         wl_signal_add(&seat->wlr_seat->events.request_set_cursor,
                         &cursor->request_set_cursor);
         cursor->request_set_cursor.notify = handle_request_set_cursor;