| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Charts module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 or (at your option) any later version |
| ** approved by the KDE Free Qt Foundation. The licenses are as published by |
| ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include <private/xypolardomain_p.h> |
| #include <private/qabstractaxis_p.h> |
| #include <QtCore/QtMath> |
| |
| QT_CHARTS_BEGIN_NAMESPACE |
| |
| XYPolarDomain::XYPolarDomain(QObject *parent) |
| : PolarDomain(parent) |
| { |
| } |
| |
| XYPolarDomain::~XYPolarDomain() |
| { |
| } |
| |
| void XYPolarDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY) |
| { |
| bool axisXChanged = false; |
| bool axisYChanged = false; |
| |
| if (!qFuzzyCompare(m_minX, minX) || !qFuzzyCompare(m_maxX, maxX)) { |
| m_minX = minX; |
| m_maxX = maxX; |
| axisXChanged = true; |
| if (!m_signalsBlocked) |
| emit rangeHorizontalChanged(m_minX, m_maxX); |
| } |
| |
| if (!qFuzzyCompare(m_minY, minY) || !qFuzzyCompare(m_maxY, maxY)) { |
| m_minY = minY; |
| m_maxY = maxY; |
| axisYChanged = true; |
| if (!m_signalsBlocked) |
| emit rangeVerticalChanged(m_minY, m_maxY); |
| } |
| |
| if (axisXChanged || axisYChanged) |
| emit updated(); |
| } |
| |
| |
| void XYPolarDomain::zoomIn(const QRectF &rect) |
| { |
| storeZoomReset(); |
| qreal dx = spanX() / m_size.width(); |
| qreal dy = spanY() / m_size.height(); |
| |
| qreal maxX = m_maxX; |
| qreal minX = m_minX; |
| qreal minY = m_minY; |
| qreal maxY = m_maxY; |
| |
| maxX = minX + dx * rect.right(); |
| minX = minX + dx * rect.left(); |
| minY = maxY - dy * rect.bottom(); |
| maxY = maxY - dy * rect.top(); |
| |
| setRange(minX, maxX, minY, maxY); |
| } |
| |
| void XYPolarDomain::zoomOut(const QRectF &rect) |
| { |
| storeZoomReset(); |
| qreal dx = spanX() / rect.width(); |
| qreal dy = spanY() / rect.height(); |
| |
| qreal maxX = m_maxX; |
| qreal minX = m_minX; |
| qreal minY = m_minY; |
| qreal maxY = m_maxY; |
| |
| minX = maxX - dx * rect.right(); |
| maxX = minX + dx * m_size.width(); |
| maxY = minY + dy * rect.bottom(); |
| minY = maxY - dy * m_size.height(); |
| |
| setRange(minX, maxX, minY, maxY); |
| } |
| |
| void XYPolarDomain::move(qreal dx, qreal dy) |
| { |
| // One unit scrolls one degree angular and one pixel radial |
| qreal x = spanX() / 360.0; |
| qreal y = spanY() / m_radius; |
| |
| qreal maxX = m_maxX; |
| qreal minX = m_minX; |
| qreal minY = m_minY; |
| qreal maxY = m_maxY; |
| |
| if (dx != 0) { |
| minX = minX + x * dx; |
| maxX = maxX + x * dx; |
| } |
| if (dy != 0) { |
| minY = minY + y * dy; |
| maxY = maxY + y * dy; |
| } |
| setRange(minX, maxX, minY, maxY); |
| } |
| |
| QPointF XYPolarDomain::calculateDomainPoint(const QPointF &point) const |
| { |
| if (point == m_center) |
| return QPointF(0.0, m_minX); |
| |
| QLineF line(m_center, point); |
| qreal a = 90.0 - line.angle(); |
| if (a < 0.0) |
| a += 360.0; |
| a = ((a / 360.0) * (m_maxX - m_minX)) + m_minX; |
| qreal r = m_minY + ((m_maxY - m_minY) * (line.length() / m_radius)); |
| return QPointF(a, r); |
| } |
| |
| qreal XYPolarDomain::toAngularCoordinate(qreal value, bool &ok) const |
| { |
| ok = true; |
| qreal f = (value - m_minX) / (m_maxX - m_minX); |
| return f * 360.0; |
| } |
| |
| qreal XYPolarDomain::toRadialCoordinate(qreal value, bool &ok) const |
| { |
| ok = true; |
| if (value < m_minY) |
| value = m_minY; |
| |
| // Dont limit the max. The drawing should clip the stuff that goes out of the grid |
| qreal f = (value - m_minY) / (m_maxY - m_minY); |
| |
| return f * m_radius; |
| } |
| |
| // operators |
| |
| bool Q_AUTOTEST_EXPORT operator== (const XYPolarDomain &domain1, const XYPolarDomain &domain2) |
| { |
| return (qFuzzyCompare(domain1.m_maxX, domain2.m_maxX) |
| && qFuzzyCompare(domain1.m_maxY, domain2.m_maxY) |
| && qFuzzyCompare(domain1.m_minX, domain2.m_minX) |
| && qFuzzyCompare(domain1.m_minY, domain2.m_minY)); |
| } |
| |
| |
| bool Q_AUTOTEST_EXPORT operator!= (const XYPolarDomain &domain1, const XYPolarDomain &domain2) |
| { |
| return !(domain1 == domain2); |
| } |
| |
| |
| QDebug Q_AUTOTEST_EXPORT operator<<(QDebug dbg, const XYPolarDomain &domain) |
| { |
| #ifdef QT_NO_TEXTSTREAM |
| Q_UNUSED(domain) |
| #else |
| dbg.nospace() << "AbstractDomain(" << domain.m_minX << ',' << domain.m_maxX << ',' << domain.m_minY << ',' << domain.m_maxY << ')' << domain.m_size; |
| #endif |
| return dbg.maybeSpace(); |
| } |
| |
| QT_CHARTS_END_NAMESPACE |
| |
| #include "moc_xypolardomain_p.cpp" |