ipc: add input::libinput_config event

This adds a libinput_config change type to the input event for when
the libinput config for a device changes

In order for this to be possible to track, the libinput config code
had to be refactored. It is now extracted into a separate file to
isolate it from the rest of the input management code.

1 files changed, 382 insertions, 0 deletions

diff --git a/sway/input/libinput.c b/sway/input/libinput.c
new file mode 100644
index 00000000..60d7da46
--- /dev/null
+++ b/sway/input/libinput.c
@@ -0,0 +1,382 @@
+#include <float.h>
+#include <libinput.h>
+#include <limits.h>
+#include <wlr/backend/libinput.h>
+#include "log.h"
+#include "sway/config.h"
+#include "sway/input/input-manager.h"
+#include "sway/ipc-server.h"
+
+static void log_status(enum libinput_config_status status) {
+        if (status != LIBINPUT_CONFIG_STATUS_SUCCESS) {
+                sway_log(SWAY_ERROR, "Failed to apply libinput config: %s",
+                        libinput_config_status_to_str(status));
+        }
+}
+
+static bool set_send_events(struct libinput_device *device, uint32_t mode) {
+        if ((libinput_device_config_send_events_get_mode(device) & mode) == 0) {
+                return false;
+        }
+        sway_log(SWAY_DEBUG, "send_events_set_mode(%d)", mode);
+        log_status(libinput_device_config_send_events_set_mode(device, mode));
+        return true;
+}
+
+static bool set_tap(struct libinput_device *device,
+                enum libinput_config_tap_state tap) {
+        if (libinput_device_config_tap_get_finger_count(device) <= 0 ||
+                        libinput_device_config_tap_get_enabled(device) == tap) {
+                return false;
+        }
+        sway_log(SWAY_DEBUG, "tap_set_enabled(%d)", tap);
+        log_status(libinput_device_config_tap_set_enabled(device, tap));
+        return true;
+}
+
+static bool set_tap_button_map(struct libinput_device *device,
+                enum libinput_config_tap_button_map map) {
+        if (libinput_device_config_tap_get_finger_count(device) <= 0 ||
+                        libinput_device_config_tap_get_button_map(device) == map) {
+                return false;
+        }
+        sway_log(SWAY_DEBUG, "tap_set_button_map(%d)", map);
+        log_status(libinput_device_config_tap_set_button_map(device, map));
+        return true;
+}
+
+static bool set_tap_drag(struct libinput_device *device,
+                enum libinput_config_drag_state drag) {
+        if (libinput_device_config_tap_get_finger_count(device) <= 0 ||
+                        libinput_device_config_tap_get_drag_enabled(device) == drag) {
+                return false;
+        }
+        sway_log(SWAY_DEBUG, "tap_set_drag_enabled(%d)", drag);
+        log_status(libinput_device_config_tap_set_drag_enabled(device, drag));
+        return true;
+}
+
+static bool set_tap_drag_lock(struct libinput_device *device,
+                enum libinput_config_drag_lock_state lock) {
+        if (libinput_device_config_tap_get_finger_count(device) <= 0 ||
+                        libinput_device_config_tap_get_drag_lock_enabled(device) == lock) {
+                return false;
+        }
+        sway_log(SWAY_DEBUG, "tap_set_drag_lock_enabled(%d)", lock);
+        log_status(libinput_device_config_tap_set_drag_lock_enabled(device, lock));
+        return true;
+}
+
+static bool set_accel_speed(struct libinput_device *device, double speed) {
+        if (!libinput_device_config_accel_is_available(device) ||
+                        libinput_device_config_accel_get_speed(device) == speed) {
+                return false;
+        }
+        sway_log(SWAY_DEBUG, "accel_set_speed(%f)", speed);
+        log_status(libinput_device_config_accel_set_speed(device, speed));
+        return true;
+}
+
+static bool set_accel_profile(struct libinput_device *device,
+                enum libinput_config_accel_profile profile) {
+        if (!libinput_device_config_accel_is_available(device) ||
+                        libinput_device_config_accel_get_profile(device) == profile) {
+                return false;
+        }
+        sway_log(SWAY_DEBUG, "accel_set_profile(%d)", profile);
+        log_status(libinput_device_config_accel_set_profile(device, profile));
+        return true;
+}
+
+static bool set_natural_scroll(struct libinput_device *d, bool n) {
+        if (!libinput_device_config_scroll_has_natural_scroll(d) ||
+                        libinput_device_config_scroll_get_natural_scroll_enabled(d) == n) {
+                return false;
+        }
+        sway_log(SWAY_DEBUG, "scroll_set_natural_scroll(%d)", n);
+        log_status(libinput_device_config_scroll_set_natural_scroll_enabled(d, n));
+        return true;
+}
+
+static bool set_left_handed(struct libinput_device *device, bool left) {
+        if (!libinput_device_config_left_handed_is_available(device) ||
+                        libinput_device_config_left_handed_get(device) == left) {
+                return false;
+        }
+        sway_log(SWAY_DEBUG, "left_handed_set(%d)", left);
+        log_status(libinput_device_config_left_handed_set(device, left));
+        return true;
+}
+
+static bool set_click_method(struct libinput_device *device,
+                enum libinput_config_click_method method) {
+        uint32_t click = libinput_device_config_click_get_methods(device);
+        if ((click & ~LIBINPUT_CONFIG_CLICK_METHOD_NONE) == 0 ||
+                        libinput_device_config_click_get_method(device) == method) {
+                return false;
+        }
+        sway_log(SWAY_DEBUG, "click_set_method(%d)", method);
+        log_status(libinput_device_config_click_set_method(device, method));
+        return true;
+}
+
+static bool set_middle_emulation(struct libinput_device *dev,
+                enum libinput_config_middle_emulation_state mid) {
+        if (!libinput_device_config_middle_emulation_is_available(dev) ||
+                        libinput_device_config_middle_emulation_get_enabled(dev) == mid) {
+                return false;
+        }
+        sway_log(SWAY_DEBUG, "middle_emulation_set_enabled(%d)", mid);
+        log_status(libinput_device_config_left_handed_set(dev, mid));
+        return true;
+}
+
+static bool set_scroll_method(struct libinput_device *device,
+                enum libinput_config_scroll_method method) {
+        uint32_t scroll = libinput_device_config_scroll_get_methods(device);
+        if ((scroll & ~LIBINPUT_CONFIG_SCROLL_NO_SCROLL) == 0 ||
+                        libinput_device_config_scroll_get_method(device) == method) {
+                return false;
+        }
+        sway_log(SWAY_DEBUG, "scroll_set_method(%d)", method);
+        log_status(libinput_device_config_scroll_set_method(device, method));
+        return true;
+}
+
+static bool set_scroll_button(struct libinput_device *dev, uint32_t button) {
+        uint32_t scroll = libinput_device_config_scroll_get_methods(dev);
+        if ((scroll & ~LIBINPUT_CONFIG_SCROLL_NO_SCROLL) == 0 ||
+                        libinput_device_config_scroll_get_button(dev) == button) {
+                return false;
+        }
+        sway_log(SWAY_DEBUG, "scroll_set_button(%d)", button);
+        log_status(libinput_device_config_scroll_set_button(dev, button));
+        return true;
+}
+
+static bool set_dwt(struct libinput_device *device, bool dwt) {
+        if (!libinput_device_config_dwt_is_available(device) ||
+                        libinput_device_config_dwt_get_enabled(device) == dwt) {
+                return false;
+        }
+        sway_log(SWAY_DEBUG, "dwt_set_enabled(%d)", dwt);
+        log_status(libinput_device_config_dwt_set_enabled(device, dwt));
+        return true;
+}
+
+static bool set_calibration_matrix(struct libinput_device *dev, float mat[6]) {
+        if (!libinput_device_config_calibration_has_matrix(dev)) {
+                return false;
+        }
+        bool changed = false;
+        float current[6];
+        libinput_device_config_calibration_get_matrix(dev, current);
+        for (int i = 0; i < 6; i++) {
+                if (current[i] != mat[i]) {
+                        changed = true;
+                        break;
+                }
+        }
+        if (changed) {
+                sway_log(SWAY_DEBUG, "calibration_set_matrix(%f, %f, %f, %f, %f, %f)",
+                                mat[0], mat[1], mat[2], mat[3], mat[4], mat[5]);
+                log_status(libinput_device_config_calibration_set_matrix(dev, mat));
+        }
+        return changed;
+}
+
+static bool config_libinput_pointer(struct libinput_device *device,
+                struct input_config *ic, const char *device_id) {
+        sway_log(SWAY_DEBUG, "config_libinput_pointer('%s' on  '%s')",
+                        ic->identifier, device_id);
+        bool changed = false;
+        if (ic->send_events != INT_MIN) {
+                changed |= set_send_events(device, ic->send_events);
+        }
+        if (ic->tap != INT_MIN) {
+                changed |= set_tap(device, ic->tap);
+        }
+        if (ic->tap_button_map != INT_MIN) {
+                changed |= set_tap_button_map(device, ic->tap_button_map);
+        }
+        if (ic->drag != INT_MIN) {
+                changed |= set_tap_drag(device, ic->drag);
+        }
+        if (ic->drag_lock != INT_MIN) {
+                changed |= set_tap_drag_lock(device, ic->drag_lock);
+        }
+
+        if (ic->pointer_accel != FLT_MIN) {
+                changed |= set_accel_speed(device, ic->pointer_accel);
+        }
+        if (ic->accel_profile != INT_MIN) {
+                changed |= set_accel_profile(device, ic->accel_profile);
+        }
+        if (ic->natural_scroll != INT_MIN) {
+                changed |= set_natural_scroll(device, ic->natural_scroll);
+        }
+        if (ic->left_handed != INT_MIN) {
+                changed |= set_left_handed(device, ic->left_handed);
+        }
+        if (ic->click_method != INT_MIN) {
+                changed |= set_click_method(device, ic->click_method);
+        }
+        if (ic->middle_emulation != INT_MIN) {
+                changed |= set_middle_emulation(device, ic->middle_emulation);
+        }
+        if (ic->scroll_method != INT_MIN) {
+                changed |= set_scroll_method(device, ic->scroll_method);
+        }
+        if (ic->scroll_button != INT_MIN) {
+                changed |= set_scroll_button(device, ic->scroll_button);
+        }
+        if (ic->dwt != INT_MIN) {
+                changed |= set_dwt(device, ic->dwt);
+        }
+        return changed;
+}
+
+static bool config_libinput_keyboard(struct libinput_device *device,
+                struct input_config *ic, const char *device_id) {
+        sway_log(SWAY_DEBUG, "config_libinput_keyboard('%s' on  '%s')",
+                        ic->identifier, device_id);
+        if (ic->send_events != INT_MIN) {
+                return set_send_events(device, ic->send_events);
+        }
+        return false;
+}
+
+static bool config_libinput_switch(struct libinput_device *device,
+                struct input_config *ic, const char *device_id) {
+        sway_log(SWAY_DEBUG, "config_libinput_switch('%s' on  '%s')",
+                        ic->identifier, device_id);
+        if (ic->send_events != INT_MIN) {
+                return set_send_events(device, ic->send_events);
+        }
+        return false;
+}
+
+static bool config_libinput_touch(struct libinput_device *device,
+                struct input_config *ic, const char *device_id) {
+        sway_log(SWAY_DEBUG, "config_libinput_touch('%s' on  '%s')",
+                        ic->identifier, device_id);
+        bool changed = false;
+        if (ic->send_events != INT_MIN) {
+                changed |= set_send_events(device, ic->send_events);
+        }
+        if (ic->calibration_matrix.configured) {
+                changed |= set_calibration_matrix(device, ic->calibration_matrix.matrix);
+        }
+        return changed;
+}
+
+void sway_input_configure_libinput_device(struct sway_input_device *device) {
+        struct input_config *ic = input_device_get_config(device);
+        if (!ic || !wlr_input_device_is_libinput(device->wlr_device)) {
+                return;
+        }
+        bool changed = false;
+        const char *device_id = device->identifier;
+        struct libinput_device *libinput_device =
+                wlr_libinput_get_device_handle(device->wlr_device);
+        if (device->wlr_device->type == WLR_INPUT_DEVICE_POINTER ||
+                        device->wlr_device->type == WLR_INPUT_DEVICE_TABLET_TOOL) {
+                changed = config_libinput_pointer(libinput_device, ic, device_id);
+        } else if (device->wlr_device->type == WLR_INPUT_DEVICE_KEYBOARD) {
+                changed = config_libinput_keyboard(libinput_device, ic, device_id);
+        } else if (device->wlr_device->type == WLR_INPUT_DEVICE_SWITCH) {
+                changed = config_libinput_switch(libinput_device, ic, device_id);
+        } else if (device->wlr_device->type == WLR_INPUT_DEVICE_TOUCH) {
+                changed = config_libinput_touch(libinput_device, ic, device_id);
+        }
+        if (changed) {
+                ipc_event_input("libinput_config", device);
+        }
+}
+
+static bool reset_libinput_pointer(struct libinput_device *device,
+                const char *device_id) {
+        sway_log(SWAY_DEBUG, "reset_libinput_pointer(%s)", device_id);
+        bool changed = false;
+        changed |= set_send_events(device,
+                libinput_device_config_send_events_get_default_mode(device));
+        changed |= set_tap(device,
+                libinput_device_config_tap_get_default_enabled(device));
+        changed |= set_tap_button_map(device,
+                libinput_device_config_tap_get_button_map(device));
+        changed |= set_tap_drag(device,
+                libinput_device_config_tap_get_default_drag_enabled(device));
+        changed |= set_tap_drag_lock(device,
+                libinput_device_config_tap_get_default_drag_lock_enabled(device));
+        changed |= set_accel_speed(device,
+                libinput_device_config_accel_get_default_speed(device));
+        changed |= set_accel_profile(device,
+                libinput_device_config_accel_get_default_profile(device));
+        changed |= set_natural_scroll(device,
+                libinput_device_config_scroll_get_default_natural_scroll_enabled(
+                device));
+        changed |= set_left_handed(device,
+                libinput_device_config_left_handed_get_default(device));
+        changed |= set_click_method(device,
+                libinput_device_config_click_get_default_method(device));
+        changed |= set_middle_emulation(device,
+                libinput_device_config_middle_emulation_get_default_enabled(device));
+        changed |= set_scroll_method(device,
+                libinput_device_config_scroll_get_default_method(device));
+        changed |= set_scroll_button(device,
+                libinput_device_config_scroll_get_default_button(device));
+        changed |= set_dwt(device,
+                libinput_device_config_dwt_get_default_enabled(device));
+        return changed;
+}
+
+static bool reset_libinput_keyboard(struct libinput_device *device,
+                const char *device_id) {
+        sway_log(SWAY_DEBUG, "reset_libinput_keyboard(%s)", device_id);
+        return set_send_events(device,
+                libinput_device_config_send_events_get_default_mode(device));
+}
+
+static bool reset_libinput_switch(struct libinput_device *device,
+                const char *device_id) {
+        sway_log(SWAY_DEBUG, "reset_libinput_switch(%s)", device_id);
+        return set_send_events(device,
+                libinput_device_config_send_events_get_default_mode(device));
+}
+
+static bool reset_libinput_touch(struct libinput_device *device,
+                const char *device_id) {
+        sway_log(SWAY_DEBUG, "reset_libinput_touch(%s)", device_id);
+        bool changed = false;
+
+        changed |= set_send_events(device,
+                libinput_device_config_send_events_get_default_mode(device));
+
+        float matrix[6];
+        libinput_device_config_calibration_get_matrix(device, matrix);
+        changed |= set_calibration_matrix(device, matrix);
+
+        return changed;
+}
+
+void sway_input_reset_libinput_device(struct sway_input_device *device) {
+        if (!wlr_input_device_is_libinput(device->wlr_device)) {
+                return;
+        }
+        bool changed = false;
+        struct libinput_device *libinput_device =
+                wlr_libinput_get_device_handle(device->wlr_device);
+        if (device->wlr_device->type == WLR_INPUT_DEVICE_POINTER ||
+                        device->wlr_device->type == WLR_INPUT_DEVICE_TABLET_TOOL) {
+                changed = reset_libinput_pointer(libinput_device, device->identifier);
+        } else if (device->wlr_device->type == WLR_INPUT_DEVICE_KEYBOARD) {
+                changed = reset_libinput_keyboard(libinput_device, device->identifier);
+        } else if (device->wlr_device->type == WLR_INPUT_DEVICE_SWITCH) {
+                changed = reset_libinput_switch(libinput_device, device->identifier);
+        } else if (device->wlr_device->type == WLR_INPUT_DEVICE_TOUCH) {
+                changed = reset_libinput_touch(libinput_device, device->identifier);
+        }
+        if (changed) {
+                ipc_event_input("libinput_config", device);
+        }
+}