input: Add support for tablet protocol.

Sway has basic support for drawing tablets, but does not expose
properties such as pressure sensitivity. This implements the wlr tablet
v2 protocol, providing tablet events to Wayland clients.

1 files changed, 26 insertions, 3 deletions

diff --git a/sway/input/seat.c b/sway/input/seat.c
index b2243fe3..ebd40343 100644
--- a/sway/input/seat.c
+++ b/sway/input/seat.c
@@ -8,6 +8,7 @@
 #include <wlr/types/wlr_data_device.h>
 #include <wlr/types/wlr_output_layout.h>
 #include <wlr/types/wlr_primary_selection.h>
+#include <wlr/types/wlr_tablet_v2.h>
 #include <wlr/types/wlr_xcursor_manager.h>
 #include "config.h"
 #include "list.h"
@@ -18,6 +19,7 @@
 #include "sway/input/keyboard.h"
 #include "sway/input/seat.h"
 #include "sway/input/switch.h"
+#include "sway/input/tablet.h"
 #include "sway/ipc-server.h"
 #include "sway/layers.h"
 #include "sway/output.h"
@@ -34,6 +36,8 @@ static void seat_device_destroy(struct sway_seat_device *seat_device) {
         }
 
         sway_keyboard_destroy(seat_device->keyboard);
+        sway_tablet_destroy(seat_device->tablet);
+        sway_tablet_pad_destroy(seat_device->tablet_pad);
         wlr_cursor_detach_input_device(seat_device->sway_seat->cursor->cursor,
                 seat_device->input_device->wlr_device);
         wl_list_remove(&seat_device->link);
@@ -118,6 +122,14 @@ static void seat_keyboard_notify_enter(struct sway_seat *seat,
                         state->pressed_keycodes, state->npressed, &keyboard->modifiers);
 }
 
+static void seat_tablet_pads_notify_enter(struct sway_seat *seat,
+                struct wlr_surface *surface) {
+        struct sway_seat_device *seat_device;
+        wl_list_for_each(seat_device, &seat->devices, link) {
+                sway_tablet_pad_notify_enter(seat_device->tablet_pad, surface);
+        }
+}
+
 /**
  * If con is a view, set it as active and enable keyboard input.
  * If con is a container, set all child views as active and don't enable
@@ -138,6 +150,7 @@ static void seat_send_focus(struct sway_node *node, struct sway_seat *seat) {
 #endif
 
                 seat_keyboard_notify_enter(seat, view->surface);
+                seat_tablet_pads_notify_enter(seat, view->surface);
 
                 struct wlr_pointer_constraint_v1 *constraint =
                         wlr_pointer_constraints_v1_constraint_for_surface(
@@ -638,14 +651,23 @@ static void seat_configure_touch(struct sway_seat *seat,
 
 static void seat_configure_tablet_tool(struct sway_seat *seat,
                 struct sway_seat_device *sway_device) {
-        if ((seat->wlr_seat->capabilities & WL_SEAT_CAPABILITY_POINTER) == 0) {
-                seat_configure_xcursor(seat);
+        if (!sway_device->tablet) {
+                sway_device->tablet = sway_tablet_create(seat, sway_device);
         }
+        sway_configure_tablet(sway_device->tablet);
         wlr_cursor_attach_input_device(seat->cursor->cursor,
                 sway_device->input_device->wlr_device);
         seat_apply_input_config(seat, sway_device);
 }
 
+static void seat_configure_tablet_pad(struct sway_seat *seat,
+                struct sway_seat_device *sway_device) {
+        if (!sway_device->tablet) {
+                sway_device->tablet_pad = sway_tablet_pad_create(seat, sway_device);
+        }
+        sway_configure_tablet_pad(sway_device->tablet_pad);
+}
+
 static struct sway_seat_device *seat_get_device(struct sway_seat *seat,
                 struct sway_input_device *input_device) {
         struct sway_seat_device *seat_device = NULL;
@@ -682,7 +704,7 @@ void seat_configure_device(struct sway_seat *seat,
                         seat_configure_tablet_tool(seat, seat_device);
                         break;
                 case WLR_INPUT_DEVICE_TABLET_PAD:
-                        sway_log(SWAY_DEBUG, "TODO: configure tablet pad");
+                        seat_configure_tablet_pad(seat, seat_device);
                         break;
         }
 }
@@ -1079,6 +1101,7 @@ void seat_set_focus_surface(struct sway_seat *seat,
                 seat->has_focus = false;
         }
         seat_keyboard_notify_enter(seat, surface);
+        seat_tablet_pads_notify_enter(seat, surface);
 }
 
 void seat_set_focus_layer(struct sway_seat *seat,