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Diffstat (limited to 'src/qtdesktop/qwheelarea.cpp')
| -rw-r--r-- | src/qtdesktop/qwheelarea.cpp | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/src/qtdesktop/qwheelarea.cpp b/src/qtdesktop/qwheelarea.cpp new file mode 100644 index 00000000..97aac522 --- /dev/null +++ b/src/qtdesktop/qwheelarea.cpp @@ -0,0 +1,181 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Components project. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names +** of its contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qwheelarea.h" + + +QWheelArea::QWheelArea(QQuickItem *parent) + : QQuickItem(parent), + m_horizontalMinimumValue(0), + m_horizontalMaximumValue(0), + m_verticalMinimumValue(0), + m_verticalMaximumValue(0), + m_horizontalValue(0), + m_verticalValue(0), + m_verticalDelta(0), + m_horizontalDelta(0), + m_scrollSpeed(1.0) +{ + +} + +QWheelArea::~QWheelArea() +{ + +} + +void QWheelArea::wheelEvent(QWheelEvent *we) +{ + if (we->orientation() == Qt::Vertical) { + setVerticalDelta(we->delta()); + } else { + setHorizontalDelta(we->delta()); + } + we->accept(); +} + +void QWheelArea::setHorizontalMinimumValue(qreal value) +{ + m_horizontalMinimumValue = value; +} + +qreal QWheelArea::horizontalMinimumValue() const +{ + return m_horizontalMinimumValue; +} + +void QWheelArea::setHorizontalMaximumValue(qreal value) +{ + m_horizontalMaximumValue = value; +} + +qreal QWheelArea::horizontalMaximumValue() const +{ + return m_horizontalMaximumValue; +} + +void QWheelArea::setVerticalMinimumValue(qreal value) +{ + m_verticalMinimumValue = value; +} + +qreal QWheelArea::verticalMinimumValue() const +{ + return m_verticalMinimumValue; +} + +void QWheelArea::setVerticalMaximumValue(qreal value) +{ + m_verticalMaximumValue = value; +} + +qreal QWheelArea::verticalMaximumValue() const +{ + return m_verticalMaximumValue; +} + +void QWheelArea::setHorizontalValue(qreal value) +{ + value = qBound<qreal>(m_horizontalMinimumValue, value, m_horizontalMaximumValue); + + if (value != m_horizontalValue) { + m_horizontalValue = value; + emit horizontalValueChanged(); + } +} + +qreal QWheelArea::horizontalValue() const +{ + return m_horizontalValue; +} + +void QWheelArea::setVerticalValue(qreal value) +{ + value = qBound<qreal>(m_verticalMinimumValue, value, m_verticalMaximumValue); + + if (value != m_verticalValue) { + m_verticalValue = value; + emit verticalValueChanged(); + } +} + +qreal QWheelArea::verticalValue() const +{ + return m_verticalValue; +} + +void QWheelArea::setVerticalDelta(qreal value) +{ + m_verticalDelta = m_scrollSpeed * value / 15; + setVerticalValue(m_verticalValue - m_verticalDelta); + + emit verticalWheelMoved(); +} + +qreal QWheelArea::verticalDelta() const +{ + return m_verticalDelta; +} + +void QWheelArea::setHorizontalDelta(qreal value) +{ + m_horizontalDelta = value / 15; + setHorizontalValue(m_horizontalValue - m_horizontalDelta); + + emit horizontalWheelMoved(); +} + +qreal QWheelArea::horizontalDelta() const +{ + return m_horizontalDelta; +} + +void QWheelArea::setScrollSpeed(qreal value) +{ + if (value != m_scrollSpeed) { + m_scrollSpeed = value; + emit scrollSpeedChanged(); + } +} + +qreal QWheelArea::scrollSpeed() const +{ + return m_scrollSpeed; +} |