xypolardomain.cpp
178 lines
| 4.7 KiB
| text/x-c
|
CppLexer
Miikka Heikkinen
|
r2483 | /**************************************************************************** | ||
| ** | ||||
| ** Copyright (C) 2013 Digia Plc | ||||
| ** All rights reserved. | ||||
| ** For any questions to Digia, please use contact form at http://qt.digia.com | ||||
| ** | ||||
| ** This file is part of the Qt Commercial Charts Add-on. | ||||
| ** | ||||
| ** $QT_BEGIN_LICENSE$ | ||||
| ** Licensees holding valid Qt Commercial licenses may use this file in | ||||
| ** accordance with the Qt Commercial License Agreement provided with the | ||||
| ** Software or, alternatively, in accordance with the terms contained in | ||||
| ** a written agreement between you and Digia. | ||||
| ** | ||||
| ** If you have questions regarding the use of this file, please use | ||||
| ** contact form at http://qt.digia.com | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ****************************************************************************/ | ||||
| #include "xypolardomain_p.h" | ||||
| #include "qabstractaxis_p.h" | ||||
| #include <qmath.h> | ||||
| QTCOMMERCIALCHART_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) | ||||
| { | ||||
| 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) | ||||
| { | ||||
| 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 QTCOMMERCIALCHART_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 QTCOMMERCIALCHART_AUTOTEST_EXPORT operator!= (const XYPolarDomain &domain1, const XYPolarDomain &domain2) | ||||
| { | ||||
| return !(domain1 == domain2); | ||||
| } | ||||
| QDebug QTCOMMERCIALCHART_AUTOTEST_EXPORT operator<<(QDebug dbg, const XYPolarDomain &domain) | ||||
| { | ||||
| dbg.nospace() << "AbstractDomain(" << domain.m_minX << ',' << domain.m_maxX << ',' << domain.m_minY << ',' << domain.m_maxY << ')' << domain.m_size; | ||||
| return dbg.maybeSpace(); | ||||
| } | ||||
| #include "moc_xypolardomain_p.cpp" | ||||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||