| /*************************************************************************** |
| * |
| * Multitouch X driver |
| * Copyright (C) 2008 Henrik Rydberg <rydberg@euromail.se> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| **************************************************************************/ |
| |
| #ifndef MEMORY_H |
| #define MEMORY_H |
| |
| #include "mtstate.h" |
| |
| /** |
| * struct Memory - parsing state |
| * |
| * @btdata: logical finger state |
| * @same: true if the finger configuration is unchanged |
| * @fingers: bitmask of fingers on the pad |
| * @added: bitmask of new fingers on the pad |
| * @thumb: bitmask of thumbs on the pad |
| * @pointing: bitmask of pointing fingers |
| * @pending: bitmask of tentatively moving fingers |
| * @moving: bitmask of moving fingers |
| * @ybar: vertical position on pad marking the clicking area |
| * @mvhold: movement before this point in time is accumulated |
| * @mvforget: movement before this point in time is discarded |
| * @dx: array of accumulated horiontal movement per finger |
| * @dy: array of accumulated vertical movement per finger |
| * @tpdown: time of first touch |
| * @tpup: time of last release |
| * @tprelax: time of next possible touch |
| * @xdown: x position of first touch |
| * @ydown: y position of first touch |
| * @xup: x position of last release |
| * @yup: y position of last release |
| * @wait: time to wait for a second tap |
| * @maxtap: max number of pointing fingers during touch |
| * @ntap: number of taps in sequence |
| * |
| */ |
| struct Memory { |
| bitmask_t btdata, same; |
| bitmask_t fingers, added, thumb; |
| bitmask_t pointing, pending, moving; |
| int ybar; |
| mstime_t mvhold, mvforget; |
| int dx[DIM_FINGER], dy[DIM_FINGER]; |
| mstime_t tpdown, tpup, tprelax; |
| int xdown, ydown, xup, yup; |
| int wait, maxtap, ntap; |
| }; |
| |
| void init_memory(struct Memory *mem); |
| void refresh_memory(struct Memory *m, |
| const struct MTState *prev_state, |
| const struct MTState *state, |
| const struct Capabilities *caps); |
| void output_memory(const struct Memory *m); |
| |
| static inline void mem_hold_movement(struct Memory *m, mstime_t t) |
| { |
| if (t > m->mvhold) |
| m->mvhold = t; |
| } |
| |
| static inline void mem_forget_movement(struct Memory *m, mstime_t t) |
| { |
| if (t > m->mvforget) |
| m->mvforget = t; |
| } |
| |
| #endif |