src/selectiontoggle.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Peter Penz <peter.penz@gmx.at>                  *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "selectiontoggle.h"
  21
  22 #include <kicon.h>
  23 #include <kiconloader.h>
  24 #include <kiconeffect.h>
  25
  26 #include <QPainter>
  27 #include <QPaintEvent>
  28 #include <QRect>
  29 #include <QTimer>
  30
  31 #include <kdebug.h>
  32
  33 SelectionToggle::SelectionToggle(QWidget* parent) :
  34     QAbstractButton(parent),
  35     m_showIcon(false),
  36     m_isHovered(false),
  37     m_icon(),
  38     m_timer(0)
  39 {
  40     parent->installEventFilter(this);
  41     resize(sizeHint());
  42     m_icon = KIconLoader::global()->loadIcon("dialog-ok",
  43                                              KIconLoader::NoGroup,
  44                                              KIconLoader::SizeSmall);
  45     m_timer = new QTimer(this);
  46     connect(m_timer, SIGNAL(timeout()),
  47             this, SLOT(showIcon()));
  48 }
  49
  50 SelectionToggle::~SelectionToggle()
  51 {
  52 }
  53
  54 QSize SelectionToggle::sizeHint() const
  55 {
  56     return QSize(16, 16);
  57 }
  58
  59 void SelectionToggle::setVisible(bool visible)
  60 {
  61     QAbstractButton::setVisible(visible);
  62     if (visible) {
  63         m_timer->start(1000);
  64     } else {
  65         m_timer->stop();
  66         m_showIcon = false;
  67     }
  68 }
  69
  70 bool SelectionToggle::eventFilter(QObject* obj, QEvent* event)
  71 {
  72     if ((obj == parent()) && (event->type() == QEvent::Leave)) {
  73         hide();
  74     }
  75     return QAbstractButton::eventFilter(obj, event);
  76 }
  77
  78 void SelectionToggle::enterEvent(QEvent* event)
  79 {
  80     QAbstractButton::enterEvent(event);
  81     m_isHovered = true;
  82     m_showIcon = true;
  83     update();
  84 }
  85
  86 void SelectionToggle::leaveEvent(QEvent* event)
  87 {
  88     QAbstractButton::leaveEvent(event);
  89     m_isHovered = false;
  90     update();
  91 }
  92
  93 void SelectionToggle::paintEvent(QPaintEvent* event)
  94 {
  95     QPainter painter(this);
  96     painter.setClipRect(event->rect());
  97
  98     if (m_isHovered) {
  99         KIconEffect iconEffect;
 100         QPixmap activeIcon = iconEffect.apply(m_icon, KIconLoader::Desktop, KIconLoader::ActiveState);
 101         painter.drawPixmap(0, 0, activeIcon);
 102     } else if (m_showIcon) {
 103         painter.drawPixmap(0, 0, m_icon);
 104     }
 105 }
 106
 107 void SelectionToggle::showIcon()
 108 {
 109     m_showIcon = true;
 110     update();
 111 }
 112
 113 #include "selectiontoggle.moc"