krdc/kfullscreenpanel.cpp

   1 /***************************************************************************
   2                  kfullscreenpanel.cpp  -  auto-hideable toolbar
   3                              -------------------
   4     begin                : Tue May 13 23:07:42 CET 2002
   5     copyright            : (C) 2002 by Tim Jansen
   6     email                : tim@tjansen.de
   7  ***************************************************************************/
   8
   9 /***************************************************************************
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  ***************************************************************************/
  17
  18 #include "kfullscreenpanel.h"
  19 #include <kdebug.h>
  20 //Added by qt3to4:
  21 #include <QVBoxLayout>
  22 #include <QEvent>
  23
  24 Counter::Counter(float start) :
  25         m_currentValue(start) {
  26         connect(&m_timer, SIGNAL(timeout()), SLOT(timeout()));
  27 }
  28
  29 void Counter::count(float stop, float stepSize, float frequency) {
  30         m_timer.stop();
  31         m_stopValue = stop;
  32         m_stepSize = stepSize;
  33         m_timeoutMs = (int)(1000.0 / frequency);
  34         timeout();
  35 }
  36
  37 void Counter::timeout() {
  38         if (m_stepSize < 0) {
  39                 if (m_currentValue <= m_stopValue) {
  40                         m_currentValue = m_stopValue;
  41                         emit counted(m_currentValue);
  42                         emit countingDownFinished();
  43                         return;
  44                 }
  45         } else {
  46                 if (m_currentValue >= m_stopValue) {
  47                         m_currentValue = m_stopValue;
  48                         emit counted(m_currentValue);
  49                         emit countingUpFinished();
  50                         return;
  51                 }
  52         }
  53         emit counted(m_currentValue);
  54
  55         m_currentValue += m_stepSize;
  56         m_timer.setSingleShot(true);
  57         m_timer.start(m_timeoutMs);
  58 }
  59
  60
  61 KFullscreenPanel::KFullscreenPanel(QWidget* parent,
  62                                    const char *name,
  63                                    const QSize &resolution) :
  64         QWidget(parent),
  65         m_child(0),
  66         m_layout(0),
  67         m_fsResolution(resolution),
  68         m_counter(0)
  69 {
  70         setObjectName(name);
  71         connect(&m_counter, SIGNAL(countingDownFinished()), SLOT(hide()));
  72         connect(&m_counter, SIGNAL(counted(float)), SLOT(movePanel(float)));
  73 }
  74
  75 KFullscreenPanel::~KFullscreenPanel() {
  76 }
  77
  78 void KFullscreenPanel::movePanel(float posY) {
  79         move(x(), (int)posY);
  80         if (!isVisible())
  81                 show();
  82 }
  83
  84 void KFullscreenPanel::setChild(QWidget *child) {
  85
  86         if (m_layout)
  87                 delete m_layout;
  88         m_child = child;
  89
  90         m_layout = new QVBoxLayout(this);
  91         m_layout->addWidget(child);
  92         doLayout();
  93 }
  94
  95 void KFullscreenPanel::doLayout() {
  96         QSize s = sizeHint();
  97         setFixedSize(s);
  98         setGeometry((m_fsResolution.width() - s.width())/2, 0,
  99                     s.width(), s.height());
 100 }
 101
 102 void KFullscreenPanel::startShow() {
 103         m_counter.count(0, height()/3.0, 24);
 104 }
 105
 106 void KFullscreenPanel::startHide() {
 107         m_counter.count(-height(), -height()/12.0, 24);
 108 }
 109
 110 void KFullscreenPanel::enterEvent(QEvent*) {
 111         emit mouseEnter();
 112 }
 113
 114 void KFullscreenPanel::leaveEvent(QEvent*) {
 115         emit mouseLeave();
 116 }
 117
 118
 119 #include "kfullscreenpanel.moc"
 120