[PATCH libinput 09/23] tablet: Handle button-events
Stephen Chandler Paul
thatslyude at gmail.com
Thu Jun 12 20:28:30 PDT 2014
Signed-off-by: Stephen Chandler Paul <thatslyude at gmail.com>
---
src/evdev-tablet.c | 113 +++++++++++++++++++++++++++++++++++++++++++++++++
src/evdev-tablet.h | 12 +++++-
src/libinput-private.h | 5 +++
src/libinput.c | 55 ++++++++++++++++++++++++
src/libinput.h | 51 +++++++++++++++++++++-
5 files changed, 233 insertions(+), 3 deletions(-)
diff --git a/src/evdev-tablet.c b/src/evdev-tablet.c
index 278890d..5143759 100644
--- a/src/evdev-tablet.c
+++ b/src/evdev-tablet.c
@@ -32,6 +32,11 @@
#define tablet_unset_status(tablet_,s_) (tablet_->status &= ~(s_))
#define tablet_has_status(tablet_,s_) (!!(tablet_->status & s_))
+#define tablet_get_pressed_buttons(tablet_,field_) \
+ ((tablet_)->button_state.field_ & ~((tablet_)->prev_button_state.field_))
+#define tablet_get_released_buttons(tablet_,field_) \
+ ((tablet_)->prev_button_state.field_ & ~((tablet_)->button_state.field_))
+
static struct list tool_list = {
.next = &tool_list,
.prev = &tool_list
@@ -115,6 +120,37 @@ tablet_notify_axes(struct tablet_dispatch *tablet,
}
static void
+tablet_update_button(struct tablet_dispatch *tablet,
+ uint32_t evcode,
+ uint32_t enable)
+{
+ uint32_t button, *flags;
+
+ /* XXX: This really depends on the expected buttons fitting in the mask */
+ if (evcode >= BTN_MISC && evcode <= BTN_TASK) {
+ flags = &tablet->button_state.pad_buttons;
+ button = evcode - BTN_MISC;
+ } else if (evcode >= BTN_TOUCH && evcode <= BTN_STYLUS2) {
+ flags = &tablet->button_state.stylus_buttons;
+ button = evcode - BTN_TOUCH;
+ } else {
+ log_info("Unhandled button %s (%#x)\n",
+ libevdev_event_code_get_name(EV_KEY, evcode), evcode);
+ return;
+ }
+
+ if (enable) {
+ (*flags) |= 1 << button;
+ tablet_set_status(tablet, TABLET_BUTTONS_PRESSED);
+ } else {
+ (*flags) &= ~(1 << button);
+ tablet_set_status(tablet, TABLET_BUTTONS_RELEASED);
+ }
+
+ assert(button < 32);
+}
+
+static void
tablet_process_key(struct tablet_dispatch *tablet,
struct evdev_device *device,
struct input_event *e,
@@ -132,7 +168,11 @@ tablet_process_key(struct tablet_dispatch *tablet,
/* These codes have an equivalent libinput_tool value */
tablet_update_tool(tablet, e->code, e->value);
break;
+ case BTN_TOUCH:
+ case BTN_STYLUS:
+ case BTN_STYLUS2:
default:
+ tablet_update_button(tablet, e->code, e->value);
break;
}
}
@@ -187,11 +227,67 @@ tablet_notify_tool(struct tablet_dispatch *tablet,
}
static void
+tablet_notify_button_mask(struct tablet_dispatch *tablet,
+ struct evdev_device *device,
+ uint32_t time,
+ uint32_t buttons,
+ uint32_t button_base,
+ enum libinput_button_state state)
+{
+ struct libinput_device *base = &device->base;
+ int32_t num_button = 0;
+
+ while (buttons) {
+ int enabled;
+
+ num_button++;
+ enabled = (buttons & 1);
+ buttons >>= 1;
+
+ if (!enabled)
+ continue;
+
+ tablet_notify_button(base,
+ time,
+ num_button + button_base - 1,
+ state);
+ }
+}
+
+static void
+tablet_notify_buttons(struct tablet_dispatch *tablet,
+ struct evdev_device *device,
+ uint32_t time,
+ enum libinput_button_state state)
+{
+ uint32_t pad_buttons, stylus_buttons;
+
+ if (state == LIBINPUT_BUTTON_STATE_PRESSED) {
+ pad_buttons = tablet_get_pressed_buttons(tablet, pad_buttons);
+ stylus_buttons =
+ tablet_get_pressed_buttons(tablet, stylus_buttons);
+ } else {
+ pad_buttons = tablet_get_released_buttons(tablet, pad_buttons);
+ stylus_buttons =
+ tablet_get_released_buttons(tablet, stylus_buttons);
+ }
+
+ tablet_notify_button_mask(tablet, device, time,
+ pad_buttons, BTN_MISC, state);
+ tablet_notify_button_mask(tablet, device, time,
+ stylus_buttons, BTN_TOUCH, state);
+}
+
+static void
tablet_flush(struct tablet_dispatch *tablet,
struct evdev_device *device,
uint32_t time)
{
if (tablet_has_status(tablet, TABLET_TOOL_LEAVING_PROXIMITY)) {
+ /* Release all stylus buttons */
+ tablet->button_state.stylus_buttons = 0;
+ tablet_set_status(tablet, TABLET_BUTTONS_RELEASED);
+
memset(&tablet->changed_axes, 0, sizeof(tablet->changed_axes));
memset(&tablet->axes, 0, sizeof(tablet->axes));
@@ -208,11 +304,28 @@ tablet_flush(struct tablet_dispatch *tablet,
}
}
+ if (tablet_has_status(tablet, TABLET_BUTTONS_RELEASED)) {
+ tablet_notify_buttons(tablet, device, time,
+ LIBINPUT_BUTTON_STATE_RELEASED);
+ tablet_unset_status(tablet, TABLET_BUTTONS_RELEASED);
+ }
+
+ if (tablet_has_status(tablet, TABLET_BUTTONS_PRESSED)) {
+ tablet_notify_buttons(tablet, device, time,
+ LIBINPUT_BUTTON_STATE_PRESSED);
+ tablet_unset_status(tablet, TABLET_BUTTONS_PRESSED);
+ }
+
/* We want button releases to be sent before the proximity out event */
if (tablet_has_status(tablet, TABLET_TOOL_LEAVING_PROXIMITY)) {
tablet_notify_proximity_out(&device->base, time);
tablet_unset_status(tablet, TABLET_TOOL_LEAVING_PROXIMITY);
}
+
+ /* Update state */
+ memcpy(&tablet->prev_button_state,
+ &tablet->button_state,
+ sizeof(tablet->button_state));
}
static void
diff --git a/src/evdev-tablet.h b/src/evdev-tablet.h
index 4727ed8..f309173 100644
--- a/src/evdev-tablet.h
+++ b/src/evdev-tablet.h
@@ -31,7 +31,14 @@ enum tablet_status {
TABLET_NONE = 0,
TABLET_AXES_UPDATED = 1 << 0,
TABLET_TOOL_UPDATED = 1 << 1,
- TABLET_TOOL_LEAVING_PROXIMITY = 1 << 2
+ TABLET_TOOL_LEAVING_PROXIMITY = 1 << 2,
+ TABLET_BUTTONS_PRESSED = 1 << 3,
+ TABLET_BUTTONS_RELEASED = 1 << 4
+};
+
+struct button_state {
+ uint32_t pad_buttons; /* bitmask of evcode - BTN_MISC */
+ uint32_t stylus_buttons; /* bitmask of evcode - BTN_TOUCH */
};
struct tablet_dispatch {
@@ -42,6 +49,9 @@ struct tablet_dispatch {
const struct input_absinfo *absinfo[LIBINPUT_TABLET_AXIS_CNT];
double axes[LIBINPUT_TABLET_AXIS_CNT];
+ struct button_state button_state;
+ struct button_state prev_button_state;
+
enum libinput_tool_type current_tool_type;
uint32_t current_tool_serial;
};
diff --git a/src/libinput-private.h b/src/libinput-private.h
index 2db92cd..d5146ce 100644
--- a/src/libinput-private.h
+++ b/src/libinput-private.h
@@ -217,6 +217,11 @@ tablet_notify_proximity_out(struct libinput_device *device,
uint32_t time);
void
+tablet_notify_button(struct libinput_device *device,
+ uint32_t time,
+ int32_t button,
+ enum libinput_button_state state);
+void
touch_notify_frame(struct libinput_device *device,
uint32_t time);
#endif /* LIBINPUT_PRIVATE_H */
diff --git a/src/libinput.c b/src/libinput.c
index b37f8f6..eb341d0 100644
--- a/src/libinput.c
+++ b/src/libinput.c
@@ -82,6 +82,9 @@ struct libinput_event_touch {
struct libinput_event_tablet {
struct libinput_event base;
+ uint32_t button;
+ enum libinput_button_state state;
+ uint32_t seat_button_count;
uint32_t time;
double *axes;
unsigned char changed_axes[NCHARS(LIBINPUT_TABLET_AXIS_CNT)];
@@ -202,6 +205,7 @@ libinput_event_get_pointer_event(struct libinput_event *event)
case LIBINPUT_EVENT_TABLET_AXIS:
case LIBINPUT_EVENT_TABLET_TOOL_UPDATE:
case LIBINPUT_EVENT_TABLET_PROXIMITY_OUT:
+ case LIBINPUT_EVENT_TABLET_BUTTON:
break;
}
@@ -231,6 +235,7 @@ libinput_event_get_keyboard_event(struct libinput_event *event)
case LIBINPUT_EVENT_TABLET_AXIS:
case LIBINPUT_EVENT_TABLET_TOOL_UPDATE:
case LIBINPUT_EVENT_TABLET_PROXIMITY_OUT:
+ case LIBINPUT_EVENT_TABLET_BUTTON:
break;
}
@@ -260,6 +265,7 @@ libinput_event_get_touch_event(struct libinput_event *event)
case LIBINPUT_EVENT_TABLET_AXIS:
case LIBINPUT_EVENT_TABLET_TOOL_UPDATE:
case LIBINPUT_EVENT_TABLET_PROXIMITY_OUT:
+ case LIBINPUT_EVENT_TABLET_BUTTON:
break;
}
@@ -288,6 +294,7 @@ libinput_event_get_tablet_event(struct libinput_event *event)
case LIBINPUT_EVENT_TABLET_AXIS:
case LIBINPUT_EVENT_TABLET_TOOL_UPDATE:
case LIBINPUT_EVENT_TABLET_PROXIMITY_OUT:
+ case LIBINPUT_EVENT_TABLET_BUTTON:
return (struct libinput_event_tablet *) event;
}
@@ -316,6 +323,7 @@ libinput_event_get_device_notify_event(struct libinput_event *event)
case LIBINPUT_EVENT_TABLET_AXIS:
case LIBINPUT_EVENT_TABLET_TOOL_UPDATE:
case LIBINPUT_EVENT_TABLET_PROXIMITY_OUT:
+ case LIBINPUT_EVENT_TABLET_BUTTON:
break;
}
@@ -531,6 +539,24 @@ libinput_event_tablet_get_time(struct libinput_event_tablet *event)
return event->time;
}
+LIBINPUT_EXPORT uint32_t
+libinput_event_tablet_get_button(struct libinput_event_tablet *event)
+{
+ return event->button;
+}
+
+LIBINPUT_EXPORT enum libinput_button_state
+libinput_event_tablet_get_button_state(struct libinput_event_tablet *event)
+{
+ return event->state;
+}
+
+LIBINPUT_EXPORT uint32_t
+libinput_event_tablet_get_seat_button_count(struct libinput_event_tablet *event)
+{
+ return event->seat_button_count;
+}
+
LIBINPUT_EXPORT enum libinput_tool_type
libinput_tool_get_type(struct libinput_tool *tool)
{
@@ -1223,6 +1249,35 @@ tablet_notify_proximity_out(struct libinput_device *device,
&proximity_out_update_event->base);
}
+void
+tablet_notify_button(struct libinput_device *device,
+ uint32_t time,
+ int32_t button,
+ enum libinput_button_state state)
+{
+ struct libinput_event_tablet *button_event;
+ int32_t seat_button_count;
+
+ button_event = zalloc(sizeof *button_event);
+ if (!button_event)
+ return;
+
+ seat_button_count = update_seat_button_count(device->seat,
+ button,
+ state);
+
+ *button_event = (struct libinput_event_tablet) {
+ .time = time,
+ .button = button,
+ .state = state,
+ .seat_button_count = seat_button_count,
+ };
+
+ post_device_event(device,
+ LIBINPUT_EVENT_TABLET_BUTTON,
+ &button_event->base);
+}
+
static void
libinput_post_event(struct libinput *libinput,
struct libinput_event *event)
diff --git a/src/libinput.h b/src/libinput.h
index 73c84be..64f460c 100644
--- a/src/libinput.h
+++ b/src/libinput.h
@@ -264,7 +264,8 @@ enum libinput_event_type {
* Signals that a device with the @ref LIBINPUT_DEVICE_CAP_TABLET
* capability has detected that there is no longer a tool in use.
*/
- LIBINPUT_EVENT_TABLET_PROXIMITY_OUT
+ LIBINPUT_EVENT_TABLET_PROXIMITY_OUT,
+ LIBINPUT_EVENT_TABLET_BUTTON
};
struct libinput;
@@ -294,7 +295,8 @@ struct libinput_event_touch;
*
* Tablet event representing an axis update, button press, or tool update. Valid
* event types for this event are @ref LIBINPUT_EVENT_TABLET_AXIS, @ref
- * LIBINPUT_EVENT_TABLET_TOOL_UPDATE and @ref LIBINPUT_EVENT_TABLET_TOOL_UPDATE.
+ * LIBINPUT_EVENT_TABLET_TOOL_UPDATE, @ref LIBINPUT_EVENT_TABLET_TOOL_UPDATE and
+ * @ref LIBINPUT_EVENT_TABLET_BUTTON.
*/
struct libinput_event_tablet;
@@ -930,6 +932,51 @@ libinput_event_tablet_get_tool(struct libinput_event_tablet *event);
/**
* @ingroup event_tablet
*
+ * Return the button that triggered this event.
+ * For tablet events that are not of type LIBINPUT_EVENT_TABLET_BUTTON, this
+ * function returns 0.
+ *
+ * @note It is an application bug to call this function for events other than
+ * LIBINPUT_EVENT_TABLET_BUTTON.
+ *
+ * @param event The libinput tablet event
+ * @return the button triggering this event
+ */
+uint32_t
+libinput_event_tablet_get_button(struct libinput_event_tablet *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * Return the button state of the event.
+ *
+ * @note It is an application bug to call this function for events other than
+ * LIBINPUT_EVENT_TABLET_BUTTON.
+ *
+ * @param event The libinput tablet event
+ * @return the button state triggering this event
+ */
+enum libinput_button_state
+libinput_event_tablet_get_button_state(struct libinput_event_tablet *event);
+
+/**
+ * @ingroup event_tablet
+ *
+ * For the button of a LIBINPUT_EVENT_TABLET_BUTTON event, return the total
+ * number of buttons pressed on all devices on the associated seat after the
+ * the event was triggered.
+ *
+ " @note It is an application bug to call this function for events other than
+ * LIBINPUT_EVENT_TABLET_BUTTON. For other events, this function returns 0.
+ *
+ * @return the seat wide pressed button count for the key of this event
+ */
+uint32_t
+libinput_event_tablet_get_seat_button_count(struct libinput_event_tablet *event);
+
+/**
+ * @ingroup event_tablet
+ *
* @param event The libinput tablet event
* @return The event time for this event
*/
--
1.8.5.5
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