2 * Copyright © 2014 Red Hat, Inc.
4 * Permission to use, copy, modify, distribute, and sell this software and
5 * its documentation for any purpose is hereby granted without fee, provided
6 * that the above copyright notice appear in all copies and that both that
7 * copyright notice and this permission notice appear in supporting
8 * documentation, and that the name of the copyright holders not be used in
9 * advertising or publicity pertaining to distribution of the software
10 * without specific, written prior permission. The copyright holders make
11 * no representations about the suitability of this software for any
12 * purpose. It is provided "as is" without express or implied warranty.
14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
15 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
16 * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
17 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
18 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
19 * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
20 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24 #ifndef EVDEV_MT_TOUCHPAD_H
25 #define EVDEV_MT_TOUCHPAD_H
32 #define TOUCHPAD_HISTORY_LENGTH 4
33 #define TOUCHPAD_MIN_SAMPLES 4
36 TOUCHPAD_EVENT_NONE = 0,
37 TOUCHPAD_EVENT_MOTION = (1 << 0),
38 TOUCHPAD_EVENT_BUTTON_PRESS = (1 << 1),
39 TOUCHPAD_EVENT_BUTTON_RELEASE = (1 << 2),
50 BUTTON_EVENT_IN_BOTTOM_R = 30,
51 BUTTON_EVENT_IN_BOTTOM_L,
52 BUTTON_EVENT_IN_TOP_R,
53 BUTTON_EVENT_IN_TOP_M,
54 BUTTON_EVENT_IN_TOP_L,
66 BUTTON_STATE_BOTTOM_NEW,
67 BUTTON_STATE_BOTTOM_TO_AREA,
70 BUTTON_STATE_TOP_TO_IGNORE,
76 SCROLL_STATE_SCROLLING
85 TAP_STATE_TOUCH_2_HOLD,
87 TAP_STATE_TOUCH_3_HOLD,
88 TAP_STATE_DRAGGING_OR_DOUBLETAP,
90 TAP_STATE_DRAGGING_WAIT,
92 TAP_STATE_DEAD, /**< finger count exceeded */
101 enum touch_state state;
103 bool fake; /* a fake touch */
104 bool is_pointer; /* the pointer-controlling touch */
110 struct tp_motion samples[TOUCHPAD_HISTORY_LENGTH];
120 /* A pinned touchpoint is the one that pressed the physical button
121 * on a clickpad. After the release, it won't move until the center
122 * moves more than a threshold away from the original coordinates
130 /* Software-button state and timeout if applicable */
132 enum button_state state;
133 /* We use button_event here so we can use == on events */
134 enum button_event curr;
140 struct evdev_dispatch base;
141 struct evdev_device *device;
142 unsigned int nfingers_down; /* number of fingers down */
143 unsigned int slot; /* current slot */
146 unsigned int ntouches; /* number of slots */
147 struct tp_touch *touches; /* len == ntouches */
148 unsigned int fake_touches; /* fake touch mask */
155 struct motion_filter *filter;
158 double constant_factor;
162 double x_scale_coeff;
163 double y_scale_coeff;
167 bool is_clickpad; /* true for clickpads */
169 bool use_clickfinger; /* number of fingers decides button number */
173 uint32_t motion_dist; /* for pinned touches */
174 unsigned int active; /* currently active button, for release event */
176 /* Only used for clickpads. The software button areas are
177 * always 2 horizontal stripes across the touchpad.
178 * The buttons are split according to the edge settings.
182 int32_t rightbutton_left_edge;
187 int32_t rightbutton_left_edge;
188 int32_t leftbutton_right_edge;
191 unsigned int timeout; /* current timeout in ms */
194 struct libinput_source *source;
195 } buttons; /* physical buttons */
198 enum scroll_state state;
199 enum libinput_pointer_axis direction;
202 enum touchpad_event queued;
207 struct libinput_source *source;
208 unsigned int timeout;
209 enum tp_tap_state state;
213 #define tp_for_each_touch(_tp, _t) \
214 for (unsigned int _i = 0; _i < (_tp)->ntouches && (_t = &(_tp)->touches[_i]); _i++)
217 tp_get_delta(struct tp_touch *t, double *dx, double *dy);
220 tp_set_pointer(struct tp_dispatch *tp, struct tp_touch *t);
223 tp_tap_handle_state(struct tp_dispatch *tp, uint64_t time);
226 tp_tap_handle_timeout(struct tp_dispatch *tp, uint64_t time);
229 tp_init_tap(struct tp_dispatch *tp);
232 tp_destroy_tap(struct tp_dispatch *tp);
235 tp_init_buttons(struct tp_dispatch *tp, struct evdev_device *device);
238 tp_destroy_buttons(struct tp_dispatch *tp);
241 tp_process_button(struct tp_dispatch *tp,
242 const struct input_event *e,
246 tp_post_button_events(struct tp_dispatch *tp, uint64_t time);
249 tp_button_handle_state(struct tp_dispatch *tp, uint64_t time);
252 tp_button_touch_active(struct tp_dispatch *tp, struct tp_touch *t);