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// -*- Mode: C++; indent-tabs-mode: nil; tab-width: 2 -*-
/*
* Copyright (C) 2011 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* 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 <http://www.gnu.org/licenses/>.
*
* Authored by: Marco Trevisan (Treviño) <mail@3v1n0.net>
*/
#include "Animator.h"
namespace unity
{
Animator::Animator(unsigned int default_duration, unsigned int fps_rate)
: start_time_(0)
, rate_(1)
, duration_(0)
, one_time_duration_(0)
, start_progress_(0.0f)
, progress_(0.0f)
{
SetDuration(default_duration);
SetRate(fps_rate);
}
Animator::~Animator()
{
Stop();
}
void Animator::SetRate(unsigned int fps_rate)
{
if (fps_rate != 0)
rate_ = 1000 / fps_rate;
}
void Animator::SetDuration(unsigned int duration)
{
duration_ = duration * 1000;
}
unsigned int Animator::GetRate() const
{
if (rate_ != 0)
return 1000 / rate_;
return rate_;
}
unsigned int Animator::GetDuration() const
{
return (one_time_duration_ > 0 ? one_time_duration_ : duration_) / 1000;
}
bool Animator::IsRunning() const
{
return bool(timeout_);
}
double Animator::GetProgress() const
{
return progress_;
}
void Animator::Start(unsigned int one_time_duration, double start_progress)
{
if (!timeout_ && start_progress < 1.0f)
{
if (start_progress < 0.0f)
start_progress = 0.0f;
one_time_duration_ = one_time_duration * 1000;
start_progress_ = start_progress;
progress_ = start_progress_;
start_time_ = g_get_monotonic_time();
timeout_.reset(new glib::Timeout(rate_, sigc::mem_fun(this, &Animator::DoStep)));
animation_started.emit();
}
}
void Animator::Start(double start_progress)
{
Start(0, start_progress);
}
void Animator::Stop()
{
if (timeout_)
{
timeout_.reset();
animation_updated.emit(progress_);
animation_ended.emit();
animation_stopped.emit(progress_);
one_time_duration_ = 0;
}
}
bool Animator::DoStep()
{
const gint64 current_time = g_get_monotonic_time();
const gint64 duration = one_time_duration_ > 0 ? one_time_duration_ : duration_;
const gint64 end_time = start_time_ + duration;
if (current_time < end_time && progress_ < 1.0f && duration > 0)
{
const double diff_time = current_time - start_time_;
progress_ = CLAMP(start_progress_ + (diff_time / duration), 0.0f, 1.0f);
animation_updated.emit(progress_);
return true;
}
else
{
progress_ = 1.0f;
animation_updated.emit(1.0f);
animation_ended.emit();
one_time_duration_ = 0;
timeout_.reset();
return false;
}
}
} //namespace
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