From 23996c5290918e264d9385dbf68b90247423187d Mon Sep 17 00:00:00 2001
From: Carlos Garnacho <carlosg@gnome.org>
Date: Thu, 19 Jan 2017 15:03:41 +0100
Subject: [PATCH] backends/x11: Support synaptics configuration
The code is taken mostly as-is from g-s-d, so we can drag the
dead horse a bit longer.
---
src/backends/x11/meta-input-settings-x11.c | 266 +++++++++++++++++++++
1 file changed, 266 insertions(+)
diff --git a/src/backends/x11/meta-input-settings-x11.c b/src/backends/x11/meta-input-settings-x11.c
index 9687fb36f..1d84dfccf 100644
--- a/src/backends/x11/meta-input-settings-x11.c
+++ b/src/backends/x11/meta-input-settings-x11.c
@@ -26,6 +26,7 @@
#include "meta-backend-x11.h"
#include "meta-input-settings-x11.h"
+#include <stdlib.h>
#include <string.h>
#include <gdk/gdkx.h>
#include <X11/Xatom.h>
@@ -159,6 +160,178 @@ change_property (ClutterInputDevice *device,
meta_XFree (data_ret);
}
+static gboolean
+is_device_synaptics (ClutterInputDevice *device)
+{
+ guchar *has_setting;
+
+ /* We just need looking for a synaptics-specific property */
+ has_setting = get_property (device, "Synaptics Off", XA_INTEGER, 8, 1);
+ if (!has_setting)
+ return FALSE;
+
+ meta_XFree (has_setting);
+ return TRUE;
+}
+
+static void
+change_synaptics_tap_left_handed (ClutterInputDevice *device,
+ gboolean tap_enabled,
+ gboolean left_handed)
+{
+ MetaDisplay *display = meta_get_display ();
+ MetaBackend *backend = meta_get_backend ();
+ Display *xdisplay = meta_backend_x11_get_xdisplay (META_BACKEND_X11 (backend));
+ XDevice *xdevice;
+ guchar *tap_action, *buttons;
+ guint buttons_capacity = 16, n_buttons;
+
+ xdevice = XOpenDevice(xdisplay, clutter_input_device_get_device_id (device));
+ if (!xdevice)
+ return;
+
+ tap_action = get_property (device, "Synaptics Tap Action",
+ XA_INTEGER, 8, 7);
+ if (!tap_action)
+ goto out;
+
+ tap_action[4] = tap_enabled ? (left_handed ? 3 : 1) : 0;
+ tap_action[5] = tap_enabled ? (left_handed ? 1 : 3) : 0;
+ tap_action[6] = tap_enabled ? 2 : 0;
+
+ change_property (device, "Synaptics Tap Action",
+ XA_INTEGER, 8, tap_action, 7);
+ meta_XFree (tap_action);
+
+ if (display)
+ meta_error_trap_push (display);
+ buttons = g_new (guchar, buttons_capacity);
+ n_buttons = XGetDeviceButtonMapping (xdisplay, xdevice,
+ buttons, buttons_capacity);
+
+ while (n_buttons > buttons_capacity)
+ {
+ buttons_capacity = n_buttons;
+ buttons = (guchar *) g_realloc (buttons,
+ buttons_capacity * sizeof (guchar));
+
+ n_buttons = XGetDeviceButtonMapping (xdisplay, xdevice,
+ buttons, buttons_capacity);
+ }
+
+ buttons[0] = left_handed ? 3 : 1;
+ buttons[2] = left_handed ? 1 : 3;
+ XSetDeviceButtonMapping (xdisplay, xdevice, buttons, n_buttons);
+ g_free (buttons);
+
+ if (display && meta_error_trap_pop_with_return (display))
+ {
+ g_warning ("Could not set synaptics touchpad left-handed for %s",
+ clutter_input_device_get_device_name (device));
+ }
+
+ out:
+ XCloseDevice (xdisplay, xdevice);
+}
+
+static void
+change_synaptics_speed (ClutterInputDevice *device,
+ gdouble speed)
+{
+ MetaDisplay *display = meta_get_display ();
+ MetaBackend *backend = meta_get_backend ();
+ Display *xdisplay = meta_backend_x11_get_xdisplay (META_BACKEND_X11 (backend));
+ XDevice *xdevice;
+ XPtrFeedbackControl feedback;
+ XFeedbackState *states, *state;
+ int i, num_feedbacks, motion_threshold, numerator, denominator;
+ gfloat motion_acceleration;
+
+ xdevice = XOpenDevice(xdisplay, clutter_input_device_get_device_id (device));
+ if (!xdevice)
+ return;
+ /* Get the list of feedbacks for the device */
+ states = XGetFeedbackControl (xdisplay, xdevice, &num_feedbacks);
+ if (!states)
+ return;
+
+ /* Calculate acceleration and threshold */
+ motion_acceleration = (speed + 1) * 5; /* speed is [-1..1], map to [0..10] */
+ motion_threshold = CLAMP (10 - floor (motion_acceleration), 1, 10);
+
+ if (motion_acceleration >= 1.0)
+ {
+ /* we want to get the acceleration, with a resolution of 0.5
+ */
+ if ((motion_acceleration - floor (motion_acceleration)) < 0.25)
+ {
+ numerator = floor (motion_acceleration);
+ denominator = 1;
+ }
+ else if ((motion_acceleration - floor (motion_acceleration)) < 0.5)
+ {
+ numerator = ceil (2.0 * motion_acceleration);
+ denominator = 2;
+ }
+ else if ((motion_acceleration - floor (motion_acceleration)) < 0.75)
+ {
+ numerator = floor (2.0 *motion_acceleration);
+ denominator = 2;
+ }
+ else
+ {
+ numerator = ceil (motion_acceleration);
+ denominator = 1;
+ }
+ }
+ else if (motion_acceleration < 1.0 && motion_acceleration > 0)
+ {
+ /* This we do to 1/10ths */
+ numerator = floor (motion_acceleration * 10) + 1;
+ denominator= 10;
+ }
+ else
+ {
+ numerator = -1;
+ denominator = -1;
+ }
+
+ if (display)
+ meta_error_trap_push (display);
+
+ state = (XFeedbackState *) states;
+
+ for (i = 0; i < num_feedbacks; i++)
+ {
+ if (state->class == PtrFeedbackClass)
+ {
+ /* And tell the device */
+ feedback.class = PtrFeedbackClass;
+ feedback.length = sizeof (XPtrFeedbackControl);
+ feedback.id = state->id;
+ feedback.threshold = motion_threshold;
+ feedback.accelNum = numerator;
+ feedback.accelDenom = denominator;
+
+ XChangeFeedbackControl (xdisplay, xdevice,
+ DvAccelNum | DvAccelDenom | DvThreshold,
+ (XFeedbackControl *) &feedback);
+ break;
+ }
+
+ state = (XFeedbackState *) ((char *) state + state->length);
+ }
+
+ if (display && meta_error_trap_pop_with_return (display))
+ {
+ g_warning ("Could not set synaptics touchpad acceleration for %s",
+ clutter_input_device_get_device_name (device));
+ }
+
+ XFreeFeedbackList (states);
+ XCloseDevice (xdisplay, xdevice);
+}
+
static void
meta_input_settings_x11_set_send_events (MetaInputSettings *settings,
ClutterInputDevice *device,
@@ -167,6 +340,13 @@ meta_input_settings_x11_set_send_events (MetaInputSettings *settings,
guchar values[2] = { 0 }; /* disabled, disabled-on-external-mouse */
guchar *available;
+ if (is_device_synaptics (device))
+ {
+ values[0] = mode != G_DESKTOP_DEVICE_SEND_EVENTS_ENABLED;
+ change_property (device, "Synaptics Off", XA_INTEGER, 8, &values, 1);
+ return;
+ }
+
available = get_property (device, "libinput Send Events Modes Available",
XA_INTEGER, 8, 2);
if (!available)
@@ -219,6 +399,12 @@ meta_input_settings_x11_set_speed (MetaInputSettings *settings,
Display *xdisplay = meta_backend_x11_get_xdisplay (META_BACKEND_X11 (backend));
gfloat value = speed;
+ if (is_device_synaptics (device))
+ {
+ change_synaptics_speed (device, speed);
+ return;
+ }
+
change_property (device, "libinput Accel Speed",
XInternAtom (xdisplay, "FLOAT", False),
32, &value, 1);
@@ -245,6 +431,19 @@ meta_input_settings_x11_set_left_handed (MetaInputSettings *settings,
else
{
value = enabled ? 1 : 0;
+
+ if (is_device_synaptics (device))
+ {
+ GSettings *settings;
+
+ settings = g_settings_new ("org.gnome.desktop.peripherals.touchpad");
+ change_synaptics_tap_left_handed (device,
+ g_settings_get_boolean (settings, "tap-to-click"),
+ enabled);
+ g_object_unref (settings);
+ return;
+ }
+
change_property (device, "libinput Left Handed Enabled",
XA_INTEGER, 8, &value, 1);
}
@@ -268,6 +467,20 @@ meta_input_settings_x11_set_tap_enabled (MetaInputSettings *settings,
{
guchar value = (enabled) ? 1 : 0;
+ if (is_device_synaptics (device))
+ {
+ GDesktopTouchpadHandedness handedness;
+ GSettings *settings;
+
+ settings = g_settings_new ("org.gnome.desktop.peripherals.touchpad");
+ handedness = g_settings_get_enum (settings, "left-handed");
+ g_object_unref (settings);
+
+ change_synaptics_tap_left_handed (device, enabled,
+ handedness == G_DESKTOP_TOUCHPAD_HANDEDNESS_LEFT);
+ return;
+ }
+
change_property (device, "libinput Tapping Enabled",
XA_INTEGER, 8, &value, 1);
}
@@ -290,6 +503,27 @@ meta_input_settings_x11_set_invert_scroll (MetaInputSettings *settings,
{
guchar value = (inverted) ? 1 : 0;
+ if (is_device_synaptics (device))
+ {
+ gint32 *scrolling_distance;
+
+ scrolling_distance = get_property (device, "Synaptics Scrolling Distance",
+ XA_INTEGER, 32, 2);
+ if (scrolling_distance)
+ {
+ scrolling_distance[0] = inverted ?
+ -abs (scrolling_distance[0]) : abs (scrolling_distance[0]);
+ scrolling_distance[1] = inverted ?
+ -abs (scrolling_distance[1]) : abs (scrolling_distance[1]);
+
+ change_property (device, "Synaptics Scrolling Distance",
+ XA_INTEGER, 32, scrolling_distance, 2);
+ meta_XFree (scrolling_distance);
+ }
+
+ return;
+ }
+
change_property (device, "libinput Natural Scrolling Enabled",
XA_INTEGER, 8, &value, 1);
}
@@ -303,6 +537,22 @@ meta_input_settings_x11_set_edge_scroll (MetaInputSettings *settings,
guchar *current = NULL;
guchar *available = NULL;
+ if (is_device_synaptics (device))
+ {
+ current = get_property (device, "Synaptics Edge Scrolling",
+ XA_INTEGER, 8, 3);
+ if (current)
+ {
+ current[0] = !!edge_scroll_enabled;
+ current[1] = !!edge_scroll_enabled;
+ change_property (device, "Synaptics Edge Scrolling",
+ XA_INTEGER, 8, current, 3);
+ meta_XFree (current);
+ }
+
+ return;
+ }
+
available = get_property (device, "libinput Scroll Methods Available",
XA_INTEGER, 8, SCROLL_METHOD_NUM_FIELDS);
if (!available || !available[SCROLL_METHOD_FIELD_EDGE])
@@ -332,6 +582,22 @@ meta_input_settings_x11_set_two_finger_scroll (MetaInputSettings *set
guchar *current = NULL;
guchar *available = NULL;
+ if (is_device_synaptics (device))
+ {
+ current = get_property (device, "Synaptics Two-Finger Scrolling",
+ XA_INTEGER, 8, 2);
+ if (current)
+ {
+ current[0] = !!two_finger_scroll_enabled;
+ current[1] = !!two_finger_scroll_enabled;
+ change_property (device, "Synaptics Two-Finger Scrolling",
+ XA_INTEGER, 8, current, 2);
+ meta_XFree (current);
+ }
+
+ return;
+ }
+
available = get_property (device, "libinput Scroll Methods Available",
XA_INTEGER, 8, SCROLL_METHOD_NUM_FIELDS);
if (!available || !available[SCROLL_METHOD_FIELD_2FG])
--
2.20.1