Implement tablet pads

3 files changed, 67 insertions, 2 deletions

diff --git a/include/backend/libinput.h b/include/backend/libinput.h
index 80f57177..89286ab8 100644
--- a/include/backend/libinput.h
+++ b/include/backend/libinput.h
@@ -68,4 +68,13 @@ void handle_tablet_tool_tip(struct libinput_event *event,
 void handle_tablet_tool_button(struct libinput_event *event,
 		struct libinput_device *device);
 
+struct wlr_tablet_pad *wlr_libinput_tablet_pad_create(
+		struct libinput_device *device);
+void handle_tablet_pad_button(struct libinput_event *event,
+		struct libinput_device *device);
+void handle_tablet_pad_ring(struct libinput_event *event,
+		struct libinput_device *device);
+void handle_tablet_pad_strip(struct libinput_event *event,
+		struct libinput_device *device);
+
 #endif
diff --git a/include/types.h b/include/types.h
index e2930a9f..2063c3f5 100644
--- a/include/types.h
+++ b/include/types.h
@@ -53,6 +53,14 @@ struct wlr_tablet_tool *wlr_tablet_tool_create(struct wlr_tablet_tool_impl *impl
 		struct wlr_tablet_tool_state *state);
 void wlr_tablet_tool_destroy(struct wlr_tablet_tool *tool);
 
+struct wlr_tablet_pad_impl {
+	void (*destroy)(struct wlr_tablet_pad_state *pad);
+};
+
+struct wlr_tablet_pad *wlr_tablet_pad_create(struct wlr_tablet_pad_impl *impl,
+		struct wlr_tablet_pad_state *state);
+void wlr_tablet_pad_destroy(struct wlr_tablet_pad *pad);
+
 struct wlr_input_device_impl {
 	void (*destroy)(struct wlr_input_device_state *state);
 };
diff --git a/include/wlr/types.h b/include/wlr/types.h
index 3afc361e..2ca73cc2 100644
--- a/include/wlr/types.h
+++ b/include/wlr/types.h
@@ -254,8 +254,55 @@ struct wlr_tablet_tool_button {
 	enum wlr_button_state state;
 };
 
-// TODO: tablet pad
-// TODO: switch
+// NOTE: the wlr tablet pad implementation does not currently support tablets
+// with more than one mode. I don't own any such hardware so I cannot test it
+// and it is too complicated to make a meaningful implementation of blindly.
+struct wlr_tablet_pad_impl;
+struct wlr_tablet_pad_state;
+
+struct wlr_tablet_pad {
+	struct wlr_tablet_pad_impl *impl;
+	struct wlr_tablet_pad_state *state;
+
+	struct {
+		struct wl_signal button;
+		struct wl_signal ring;
+		struct wl_signal strip;
+	} events;
+};
+
+struct wlr_tablet_pad_button {
+	uint32_t time_sec;
+	uint64_t time_usec;
+	uint32_t button;
+	enum wlr_button_state state;
+};
+
+enum wlr_tablet_pad_ring_source {
+	WLR_TABLET_PAD_RING_SOURCE_UNKNOWN,
+	WLR_TABLET_PAD_RING_SOURCE_FINGER,
+};
+
+struct wlr_tablet_pad_ring {
+	uint32_t time_sec;
+	uint64_t time_usec;
+	enum wlr_tablet_pad_ring_source source;
+	uint32_t ring;
+	double position;
+};
+
+enum wlr_tablet_pad_strip_source {
+	WLR_TABLET_PAD_STRIP_SOURCE_UNKNOWN,
+	WLR_TABLET_PAD_STRIP_SOURCE_FINGER,
+};
+
+struct wlr_tablet_pad_strip {
+	uint32_t time_sec;
+	uint64_t time_usec;
+	enum wlr_tablet_pad_strip_source source;
+	uint32_t strip;
+	double position;
+};
 
 enum wlr_input_device_type {
 	WLR_INPUT_DEVICE_KEYBOARD,
@@ -284,6 +331,7 @@ struct wlr_input_device {
 		struct wlr_pointer *pointer;
 		struct wlr_touch *touch;
 		struct wlr_tablet_tool *tablet_tool;
+		struct wlr_tablet_pad *tablet_pad;
 	};
 };