src/kitemviews/private/kitemlistrubberband.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
   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 "kitemlistrubberband.h"
  21
  22 KItemListRubberBand::KItemListRubberBand(QObject* parent) :
  23     QObject(parent),
  24     m_active(false),
  25     m_startPos(),
  26     m_endPos()
  27 {
  28 }
  29
  30 KItemListRubberBand::~KItemListRubberBand()
  31 {
  32 }
  33
  34 void KItemListRubberBand::setStartPosition(const QPointF& pos)
  35 {
  36     if (m_startPos != pos) {
  37         const QPointF previous = m_startPos;
  38         m_startPos = pos;
  39         emit startPositionChanged(m_startPos, previous);
  40     }
  41 }
  42
  43 QPointF KItemListRubberBand::startPosition() const
  44 {
  45     return m_startPos;
  46 }
  47
  48 void KItemListRubberBand::setEndPosition(const QPointF& pos)
  49 {
  50     if (m_endPos != pos) {
  51         const QPointF previous = m_endPos;
  52         m_endPos = pos;
  53
  54         if (m_startPos.x() == m_endPos.x()) {
  55             if (previous.x() < m_startPos.x()) {
  56                 m_endPos.rx() = m_startPos.x() - 1.0;
  57             } else {
  58                 m_endPos.rx() = m_startPos.x() + 1.0;
  59             }
  60         }
  61         if (m_startPos.y() == m_endPos.y()) {
  62             if (previous.y() < m_startPos.y()) {
  63                 m_endPos.ry() = m_startPos.y() - 1.0;
  64             } else {
  65                 m_endPos.ry() = m_startPos.y() + 1.0;
  66             }
  67         }
  68
  69         emit endPositionChanged(m_endPos, previous);
  70     }
  71 }
  72
  73 QPointF KItemListRubberBand::endPosition() const
  74 {
  75     return m_endPos;
  76 }
  77
  78 void KItemListRubberBand::setActive(bool active)
  79 {
  80     if (m_active != active) {
  81         m_active = active;
  82         emit activationChanged(active);
  83     }
  84 }
  85
  86 bool KItemListRubberBand::isActive() const
  87 {
  88     return m_active;
  89 }
  90