From a0a4c6c30704a792193ff49d7fcaab63dac8a07a Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Mon, 28 Mar 2011 20:55:29 +0200 Subject: Introduce touch gesture events Touch gesture events follow the same logic as drags, except they cannot be held back but are emitted immediately. Signed-off-by: Henrik Rydberg --- src/gestures-touch.c | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 src/gestures-touch.c (limited to 'src/gestures-touch.c') diff --git a/src/gestures-touch.c b/src/gestures-touch.c new file mode 100644 index 0000000..b6a2706 --- /dev/null +++ b/src/gestures-touch.c @@ -0,0 +1,94 @@ +/***************************************************************************** + * + * grail - Gesture Recognition And Instantiation Library + * + * Copyright (C) 2010 Canonical Ltd. + * Copyright (C) 2010 Henrik Rydberg + * + * 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 3 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, see . + * + ****************************************************************************/ + +#include "grail-recognizer.h" +#include +#include + +static const int getype[DIM_TOUCH + 1] = { + -1, + GRAIL_TYPE_TOUCH1, + GRAIL_TYPE_TOUCH2, + GRAIL_TYPE_TOUCH3, + GRAIL_TYPE_TOUCH4, + GRAIL_TYPE_TOUCH5, +}; + +int gru_touch(struct grail *ge, + const struct utouch_frame *frame) +{ + struct gesture_recognizer *gru = ge->gru; + struct combo_model *state = &gru->touch; + struct move_model *move = &gru->move; + if (frame->slot_revision != frame->prev->slot_revision) { + if (state->active) { + gru_end(ge, state->gid, move, + state->prop, state->nprop); + state->active = 0; + } + } + if (!state->active) { + int type = getype[move->ntouch]; + if (type <= 0) + return 0; + state->gid = gin_gid_begin(ge, type, -PRIO_GESTURE, frame); + state->active = 1; + } + state->nprop = gin_add_contact_props(ge->gin, state->prop, frame); + gru_event(ge, state->gid, move, state->prop, state->nprop); + return 1; +} + +int gru_wintouch(struct grail *ge, + const struct utouch_frame *frame) +{ + struct gesture_recognizer *gru = ge->gru; + struct combo_model *state = &gru->wintouch; + struct move_model *move = &gru->move; + if (frame->slot_revision != frame->prev->slot_revision) { + if (state->active && out_of_bounds(state, move)) { + gru_end(ge, state->gid, move, + state->prop, state->nprop); + state->active = 0; + } + } + if (!state->active) { + if (move->ntouch == 4) { + state->gid = gin_gid_begin(ge, GRAIL_TYPE_MTOUCH, + -PRIO_META, frame); + state->mintouch = 1; + state->maxtouch = 4; + state->active = 1; + } else if (move->ntouch == 3) { + state->gid = gin_gid_begin(ge, GRAIL_TYPE_ETOUCH, + -PRIO_ENV, frame); + state->mintouch = 1; + state->maxtouch = 3; + state->active = 1; + } else { + return 0; + } + } + state->nprop = gin_add_contact_props(ge->gin, state->prop, frame); + gru_event(ge, state->gid, move, state->prop, state->nprop); + return 1; +} -- cgit v1.2.3