diff options
Diffstat (limited to 'include/mtstate.h')
-rw-r--r-- | include/mtstate.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/include/mtstate.h b/include/mtstate.h new file mode 100644 index 0000000..ac0b18d --- /dev/null +++ b/include/mtstate.h @@ -0,0 +1,62 @@ +/*************************************************************************** + * + * 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 MTSTATE_H +#define MTSTATE_H + +#include "hwstate.h" + +struct MTFinger { + struct FingerData hw; + int id, thumb; +}; + +struct MTState { + struct MTFinger finger[DIM_FINGER]; + int nfinger; + unsigned button; + mstime_t evtime; +}; + +void init_mtstate(struct MTState *s); +void extract_mtstate(struct MTState *s, + const struct HWState *hs, + const struct Capabilities *caps); +void output_mtstate(const struct MTState *s); + +const struct MTFinger *find_finger(const struct MTState *s, int id); + + +static inline int center_dist2(const struct MTFinger *a, + const struct Capabilities *caps) +{ + return dist2(a->hw.position_x - get_cap_xmid(caps), + a->hw.position_y - get_cap_ymid(caps)); +} + +static inline int center_maxdist2(const struct Capabilities *caps) +{ + return dist2(caps->abs_position_x.maximum - get_cap_xmid(caps), + caps->abs_position_y.maximum - get_cap_ymid(caps)); +} + +#endif + |