1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/libs/goatkit/boolanm.cc	Wed Sep 23 05:44:58 2015 +0300
     1.3 @@ -0,0 +1,151 @@
     1.4 +/*
     1.5 +GoatKit - a themable/animated widget toolkit for games
     1.6 +Copyright (C) 2014  John Tsiombikas <nuclear@member.fsf.org>
     1.7 +
     1.8 +This program is free software: you can redistribute it and/or modify
     1.9 +it under the terms of the GNU Lesser General Public License as published by
    1.10 +the Free Software Foundation, either version 3 of the License, or
    1.11 +(at your option) any later version.
    1.12 +
    1.13 +This program is distributed in the hope that it will be useful,
    1.14 +but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.15 +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1.16 +GNU Lesser General Public License for more details.
    1.17 +
    1.18 +You should have received a copy of the GNU Lesser General Public License
    1.19 +along with this program.  If not, see <http://www.gnu.org/licenses/>.
    1.20 +*/
    1.21 +#include "boolanm.h"
    1.22 +
    1.23 +static long default_get_msec();
    1.24 +
    1.25 +BoolAnim::BoolAnim(bool st)
    1.26 +{
    1.27 +	set(st);
    1.28 +	trans_start = 0;
    1.29 +	trans_dur = 500;
    1.30 +	get_msec = default_get_msec;
    1.31 +}
    1.32 +
    1.33 +void BoolAnim::update(long tm) const
    1.34 +{
    1.35 +	if(trans_dir == 0.0) return;
    1.36 +
    1.37 +	float dt = (tm - trans_start) / 1000.0;
    1.38 +	float t = dt / (trans_dur / 1000.0);
    1.39 +
    1.40 +	if(trans_dir > 0.0) {
    1.41 +		value = t;
    1.42 +	} else {
    1.43 +		value = 1.0 - t;
    1.44 +	}
    1.45 +
    1.46 +	if(value < 0.0) {
    1.47 +		value = 0.0;
    1.48 +		trans_dir = 0.0;
    1.49 +	} else if(value > 1.0) {
    1.50 +		value = 1.0;
    1.51 +		trans_dir = 0.0;
    1.52 +	}
    1.53 +}
    1.54 +
    1.55 +void BoolAnim::set_transition_duration(long dur)
    1.56 +{
    1.57 +	trans_dur = dur;
    1.58 +}
    1.59 +
    1.60 +void BoolAnim::set_time_callback(long (*time_func)())
    1.61 +{
    1.62 +	get_msec = time_func;
    1.63 +}
    1.64 +
    1.65 +void BoolAnim::set(bool st)
    1.66 +{
    1.67 +	value = st ? 1.0 : 0.0;
    1.68 +	trans_dir = 0.0;
    1.69 +}
    1.70 +
    1.71 +void BoolAnim::change(bool st)
    1.72 +{
    1.73 +	change(st, get_msec());
    1.74 +}
    1.75 +
    1.76 +void BoolAnim::change(bool st, long tm)
    1.77 +{
    1.78 +	trans_dir = st ? 1.0 : -1.0;
    1.79 +	trans_start = tm;
    1.80 +}
    1.81 +
    1.82 +bool BoolAnim::get_state() const
    1.83 +{
    1.84 +	return get_state(get_msec());
    1.85 +}
    1.86 +
    1.87 +bool BoolAnim::get_state(long tm) const
    1.88 +{
    1.89 +	update(tm);
    1.90 +
    1.91 +	// if we're not in transition use the value (should be 0 or 1)
    1.92 +	if(trans_dir == 0.0) {
    1.93 +		return value > 0.5;
    1.94 +	}
    1.95 +
    1.96 +	// if we're in transition base it on the direction of the transition
    1.97 +	return trans_dir > 0.0;
    1.98 +}
    1.99 +
   1.100 +float BoolAnim::get_value() const
   1.101 +{
   1.102 +	return get_value(get_msec());
   1.103 +}
   1.104 +
   1.105 +float BoolAnim::get_value(long tm) const
   1.106 +{
   1.107 +	update(tm);
   1.108 +	return value;
   1.109 +}
   1.110 +
   1.111 +float BoolAnim::get_dir() const
   1.112 +{
   1.113 +	return get_dir(get_msec());
   1.114 +}
   1.115 +
   1.116 +float BoolAnim::get_dir(long tm) const
   1.117 +{
   1.118 +	update(tm);
   1.119 +	return trans_dir;
   1.120 +}
   1.121 +
   1.122 +BoolAnim::operator bool() const
   1.123 +{
   1.124 +	return get_state();
   1.125 +}
   1.126 +
   1.127 +BoolAnim::operator float() const
   1.128 +{
   1.129 +	return get_value();
   1.130 +}
   1.131 +
   1.132 +#ifdef WIN32
   1.133 +#include <windows.h>
   1.134 +
   1.135 +static long default_get_msec()
   1.136 +{
   1.137 +	return GetTickCount();
   1.138 +}
   1.139 +#else
   1.140 +#include <sys/time.h>
   1.141 +
   1.142 +static long default_get_msec()
   1.143 +{
   1.144 +	static struct timeval tv0;
   1.145 +	struct timeval tv;
   1.146 +
   1.147 +	gettimeofday(&tv, 0);
   1.148 +	if(tv0.tv_sec == 0 && tv0.tv_usec == 0) {
   1.149 +		tv0 = tv;
   1.150 +		return 0;
   1.151 +	}
   1.152 +	return (tv.tv_sec - tv0.tv_sec) * 1000 + (tv.tv_usec - tv0.tv_usec) / 1000;
   1.153 +}
   1.154 +#endif