src/mainanimation.cpp

   1 /*
   2   Copyright (c) 2006 Paolo Capriotti <p.capriotti@gmail.com>
   3             (c) 2006 Maurizio Monge <maurizio.monge@kdemail.net>
   4
   5   This program is free software; you can redistribute it and/or modify
   6   it under the terms of the GNU General Public License as published by
   7   the Free Software Foundation; either version 2 of the License, or
   8   (at your option) any later version.
   9 */
  10
  11 #include "mainanimation.h"
  12
  13 using namespace boost;
  14
  15 MainAnimation::MainAnimation(double speed)
  16 : AnimationGroup(true)
  17 , m_translate(0)
  18 , m_speed(speed)
  19 , m_delay(20) {
  20   m_active = true;
  21   connect(&m_timer, SIGNAL(timeout()), this, SLOT(tick()));
  22 }
  23
  24 void MainAnimation::addAnimation(const shared_ptr<Animation>& a) {
  25   if (!m_timer.isActive()) {
  26     m_timer.start(m_delay);
  27     m_time.restart();
  28   }
  29
  30   AnimationGroup::addPostAnimation(a);
  31   tick();
  32 }
  33
  34 void MainAnimation::stop() {
  35   AnimationGroup::stop();
  36 }
  37
  38 void MainAnimation::tick() {
  39   animationAdvance(static_cast<int>(m_time.elapsed() * m_speed) + m_translate);
  40   if (empty()) {
  41     // no more animations, stop the clock!
  42     m_timer.stop();
  43   }
  44 }
  45
  46 void MainAnimation::setSpeed(double speed) {
  47   int e = m_time.elapsed();
  48   m_translate = int((e*m_speed + m_translate) - e*speed);
  49   m_speed = speed;
  50 }
  51
  52 void MainAnimation::setDelay(int delay) {
  53   m_timer.setInterval(m_delay = delay);
  54 }
  55
  56 MainAnimation& MainAnimation::global() {
  57   static MainAnimation instance;
  58   return instance;
  59 }
  60