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29
30#include <private/logxlogypolardomain_p.h>
31#include <private/qabstractaxis_p.h>
32#include <QtCharts/QLogValueAxis>
33#include <QtCore/QtMath>
34#include <cmath>
35
36QT_CHARTS_BEGIN_NAMESPACE
37
38LogXLogYPolarDomain::LogXLogYPolarDomain(QObject *parent)
39 : PolarDomain(parent),
40 m_logLeftX(0),
41 m_logRightX(1),
42 m_logBaseX(10),
43 m_logInnerY(0),
44 m_logOuterY(1),
45 m_logBaseY(10)
46{
47}
48
49LogXLogYPolarDomain::~LogXLogYPolarDomain()
50{
51}
52
53void LogXLogYPolarDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY)
54{
55 bool axisXChanged = false;
56 bool axisYChanged = false;
57
58 adjustLogDomainRanges(min&: minX, max&: maxX);
59 adjustLogDomainRanges(min&: minY, max&: maxY);
60
61 if (!qFuzzyCompare(p1: m_minX, p2: minX) || !qFuzzyCompare(p1: m_maxX, p2: maxX)) {
62 m_minX = minX;
63 m_maxX = maxX;
64 axisXChanged = true;
65 qreal logMinX = std::log10(x: m_minX) / std::log10(x: m_logBaseX);
66 qreal logMaxX = std::log10(x: m_maxX) / std::log10(x: m_logBaseX);
67 m_logLeftX = logMinX < logMaxX ? logMinX : logMaxX;
68 m_logRightX = logMinX > logMaxX ? logMinX : logMaxX;
69 if (!m_signalsBlocked)
70 emit rangeHorizontalChanged(min: m_minX, max: m_maxX);
71 }
72
73 if (!qFuzzyIsNull(d: m_minY - minY) || !qFuzzyIsNull(d: m_maxY - maxY)) {
74 m_minY = minY;
75 m_maxY = maxY;
76 axisYChanged = true;
77 qreal logMinY = std::log10(x: m_minY) / std::log10(x: m_logBaseY);
78 qreal logMaxY = std::log10(x: m_maxY) / std::log10(x: m_logBaseY);
79 m_logInnerY = logMinY < logMaxY ? logMinY : logMaxY;
80 m_logOuterY = logMinY > logMaxY ? logMinY : logMaxY;
81 if (!m_signalsBlocked)
82 emit rangeVerticalChanged(min: m_minY, max: m_maxY);
83 }
84
85 if (axisXChanged || axisYChanged)
86 emit updated();
87}
88
89void LogXLogYPolarDomain::zoomIn(const QRectF &rect)
90{
91 storeZoomReset();
92 qreal logLeftX = rect.left() * (m_logRightX - m_logLeftX) / m_size.width() + m_logLeftX;
93 qreal logRightX = rect.right() * (m_logRightX - m_logLeftX) / m_size.width() + m_logLeftX;
94 qreal leftX = qPow(x: m_logBaseX, y: logLeftX);
95 qreal rightX = qPow(x: m_logBaseX, y: logRightX);
96 qreal minX = leftX < rightX ? leftX : rightX;
97 qreal maxX = leftX > rightX ? leftX : rightX;
98
99 qreal logLeftY = m_logOuterY - rect.bottom() * (m_logOuterY - m_logInnerY) / m_size.height();
100 qreal logRightY = m_logOuterY - rect.top() * (m_logOuterY - m_logInnerY) / m_size.height();
101 qreal leftY = qPow(x: m_logBaseY, y: logLeftY);
102 qreal rightY = qPow(x: m_logBaseY, y: logRightY);
103 qreal minY = leftY < rightY ? leftY : rightY;
104 qreal maxY = leftY > rightY ? leftY : rightY;
105
106 setRange(minX, maxX, minY, maxY);
107}
108
109void LogXLogYPolarDomain::zoomOut(const QRectF &rect)
110{
111 storeZoomReset();
112 const qreal factorX = m_size.width() / rect.width();
113
114 qreal logLeftX = m_logLeftX + (m_logRightX - m_logLeftX) / 2.0 * (1.0 - factorX);
115 qreal logRIghtX = m_logLeftX + (m_logRightX - m_logLeftX) / 2.0 * (1.0 + factorX);
116 qreal leftX = qPow(x: m_logBaseX, y: logLeftX);
117 qreal rightX = qPow(x: m_logBaseX, y: logRIghtX);
118 qreal minX = leftX < rightX ? leftX : rightX;
119 qreal maxX = leftX > rightX ? leftX : rightX;
120
121 const qreal factorY = m_size.height() / rect.height();
122 qreal newLogMinY = m_logInnerY + (m_logOuterY - m_logInnerY) / 2.0 * (1.0 - factorY);
123 qreal newLogMaxY = m_logInnerY + (m_logOuterY - m_logInnerY) / 2.0 * (1.0 + factorY);
124 qreal leftY = qPow(x: m_logBaseY, y: newLogMinY);
125 qreal rightY = qPow(x: m_logBaseY, y: newLogMaxY);
126 qreal minY = leftY < rightY ? leftY : rightY;
127 qreal maxY = leftY > rightY ? leftY : rightY;
128
129 setRange(minX, maxX, minY, maxY);
130}
131
132void LogXLogYPolarDomain::move(qreal dx, qreal dy)
133{
134 qreal stepX = dx * (m_logRightX - m_logLeftX) / m_size.width();
135 qreal leftX = qPow(x: m_logBaseX, y: m_logLeftX + stepX);
136 qreal rightX = qPow(x: m_logBaseX, y: m_logRightX + stepX);
137 qreal minX = leftX < rightX ? leftX : rightX;
138 qreal maxX = leftX > rightX ? leftX : rightX;
139
140 qreal stepY = dy * (m_logOuterY - m_logInnerY) / m_radius;
141 qreal leftY = qPow(x: m_logBaseY, y: m_logInnerY + stepY);
142 qreal rightY = qPow(x: m_logBaseY, y: m_logOuterY + stepY);
143 qreal minY = leftY < rightY ? leftY : rightY;
144 qreal maxY = leftY > rightY ? leftY : rightY;
145
146 setRange(minX, maxX, minY, maxY);
147}
148
149qreal LogXLogYPolarDomain::toAngularCoordinate(qreal value, bool &ok) const
150{
151 qreal retVal;
152 if (value <= 0) {
153 ok = false;
154 retVal = 0.0;
155 } else {
156 ok = true;
157 const qreal tickSpan = 360.0 / qAbs(t: m_logRightX - m_logLeftX);
158 const qreal logValue = std::log10(x: value) / std::log10(x: m_logBaseX);
159 const qreal valueDelta = logValue - m_logLeftX;
160
161 retVal = valueDelta * tickSpan;
162 }
163 return retVal;
164}
165
166qreal LogXLogYPolarDomain::toRadialCoordinate(qreal value, bool &ok) const
167{
168 qreal retVal;
169 if (value <= 0) {
170 ok = false;
171 retVal = 0.0;
172 } else {
173 ok = true;
174 const qreal tickSpan = m_radius / qAbs(t: m_logOuterY - m_logInnerY);
175 const qreal logValue = std::log10(x: value) / std::log10(x: m_logBaseY);
176 const qreal valueDelta = logValue - m_logInnerY;
177
178 retVal = valueDelta * tickSpan;
179
180 if (retVal < 0.0)
181 retVal = 0.0;
182 }
183 return retVal;
184}
185
186QPointF LogXLogYPolarDomain::calculateDomainPoint(const QPointF &point) const
187{
188 if (point == m_center)
189 return QPointF(0.0, m_minY);
190
191 QLineF line(m_center, point);
192 qreal a = 90.0 - line.angle();
193 if (a < 0.0)
194 a += 360.0;
195
196 const qreal deltaX = 360.0 / qAbs(t: m_logRightX - m_logLeftX);
197 a = qPow(x: m_logBaseX, y: m_logLeftX + (a / deltaX));
198
199 const qreal deltaY = m_radius / qAbs(t: m_logOuterY - m_logInnerY);
200 qreal r = qPow(x: m_logBaseY, y: m_logInnerY + (line.length() / deltaY));
201
202 return QPointF(a, r);
203}
204
205bool LogXLogYPolarDomain::attachAxis(QAbstractAxis *axis)
206{
207 AbstractDomain::attachAxis(axis);
208 QLogValueAxis *logAxis = qobject_cast<QLogValueAxis *>(object: axis);
209
210 if (logAxis && logAxis->orientation() == Qt::Horizontal) {
211 QObject::connect(sender: logAxis, SIGNAL(baseChanged(qreal)), receiver: this, SLOT(handleHorizontalAxisBaseChanged(qreal)));
212 handleHorizontalAxisBaseChanged(baseX: logAxis->base());
213 } else if (logAxis && logAxis->orientation() == Qt::Vertical){
214 QObject::connect(sender: logAxis, SIGNAL(baseChanged(qreal)), receiver: this, SLOT(handleVerticalAxisBaseChanged(qreal)));
215 handleVerticalAxisBaseChanged(baseY: logAxis->base());
216 }
217
218 return true;
219}
220
221bool LogXLogYPolarDomain::detachAxis(QAbstractAxis *axis)
222{
223 AbstractDomain::detachAxis(axis);
224 QLogValueAxis *logAxis = qobject_cast<QLogValueAxis *>(object: axis);
225
226 if (logAxis && logAxis->orientation() == Qt::Horizontal)
227 QObject::disconnect(sender: logAxis, SIGNAL(baseChanged(qreal)), receiver: this, SLOT(handleHorizontalAxisBaseChanged(qreal)));
228 else if (logAxis && logAxis->orientation() == Qt::Vertical)
229 QObject::disconnect(sender: logAxis, SIGNAL(baseChanged(qreal)), receiver: this, SLOT(handleVerticalAxisBaseChanged(qreal)));
230
231 return true;
232}
233
234void LogXLogYPolarDomain::handleHorizontalAxisBaseChanged(qreal baseX)
235{
236 m_logBaseX = baseX;
237 qreal logMinX = std::log10(x: m_minX) / std::log10(x: m_logBaseX);
238 qreal logMaxX = std::log10(x: m_maxX) / std::log10(x: m_logBaseX);
239 m_logLeftX = logMinX < logMaxX ? logMinX : logMaxX;
240 m_logRightX = logMinX > logMaxX ? logMinX : logMaxX;
241 emit updated();
242}
243
244void LogXLogYPolarDomain::handleVerticalAxisBaseChanged(qreal baseY)
245{
246 m_logBaseY = baseY;
247 qreal logMinY = std::log10(x: m_minY) / std::log10(x: m_logBaseY);
248 qreal logMaxY = std::log10(x: m_maxY) / std::log10(x: m_logBaseY);
249 m_logInnerY = logMinY < logMaxY ? logMinY : logMaxY;
250 m_logOuterY = logMinY > logMaxY ? logMinY : logMaxY;
251 emit updated();
252}
253
254// operators
255
256bool Q_AUTOTEST_EXPORT operator== (const LogXLogYPolarDomain &domain1, const LogXLogYPolarDomain &domain2)
257{
258 return (qFuzzyIsNull(d: domain1.m_maxX - domain2.m_maxX)
259 && qFuzzyIsNull(d: domain1.m_maxY - domain2.m_maxY)
260 && qFuzzyIsNull(d: domain1.m_minX - domain2.m_minX)
261 && qFuzzyIsNull(d: domain1.m_minY - domain2.m_minY));
262}
263
264
265bool Q_AUTOTEST_EXPORT operator!= (const LogXLogYPolarDomain &domain1, const LogXLogYPolarDomain &domain2)
266{
267 return !(domain1 == domain2);
268}
269
270
271QDebug Q_AUTOTEST_EXPORT operator<<(QDebug dbg, const LogXLogYPolarDomain &domain)
272{
273#ifdef QT_NO_TEXTSTREAM
274 Q_UNUSED(domain)
275#else
276 dbg.nospace() << "AbstractDomain(" << domain.m_minX << ',' << domain.m_maxX << ',' << domain.m_minY << ',' << domain.m_maxY << ')' << domain.m_size;
277#endif
278 return dbg.maybeSpace();
279}
280
281QT_CHARTS_END_NAMESPACE
282
283#include "moc_logxlogypolardomain_p.cpp"
284

source code of qtcharts/src/charts/domain/logxlogypolardomain.cpp