From 697b5b5c7d2b1c46387061fcbed24cbee51d98ce Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Wed, 4 Aug 2010 16:47:43 +0200 Subject: Introduce tapping Simplify some common parts of the recognizer code and add tapping to the gesture suite. Signed-off-by: Henrik Rydberg --- src/gestures-pan.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 src/gestures-pan.c (limited to 'src/gestures-pan.c') diff --git a/src/gestures-pan.c b/src/gestures-pan.c new file mode 100644 index 0000000..541c502 --- /dev/null +++ b/src/gestures-pan.c @@ -0,0 +1,65 @@ +/***************************************************************************** + * + * grail - Gesture Recognition And Instantiation Library + * + * Copyright (C) 2010 Canonical Ltd. + * + * 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 . + * + * Authors: + * Henrik Rydberg + * + ****************************************************************************/ + +#include "grail-recognizer.h" +#include +#include + +int gru_pan(struct grail *ge, + const struct touch_frame *frame) +{ + struct gesture_recognizer *gru = ge->gru; + struct combo_model *state = &gru->pan; + struct move_model *move = &gru->move; + grail_prop_t prop[DIM_GRAIL_PROP]; + if (!move->motion) { + if (state->active) { + gru_end(ge, state->gid, move); + state->active = 0; + } + return 0; + } + if (!move->x.tickle && !move->y.tickle) + return 0; + if (!state->active) { + switch(move->ntouch) { + case 2: + state->gid = gin_gid_begin(ge, GRAIL_TYPE_PAN, frame); + break; + case 3: + state->gid = gin_gid_begin(ge, GRAIL_TYPE_SWIPE, frame); + break; + default: + return 0; + } + state->active = 1; + } + if (!move->x.active && !move->y.active) + return 0; + prop[0] = move->x.active ? move->x.delta : 0; + prop[1] = move->y.active ? move->y.delta : 0; + gru_event(ge, state->gid, move, prop, 2); + return 1; +} + -- cgit v1.2.3