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2 | ** |
3 | ** Copyright (C) 2016 The Qt Company Ltd. |
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5 | ** |
6 | ** This file is part of the Qt Charts module of the Qt Toolkit. |
7 | ** |
8 | ** $QT_BEGIN_LICENSE:GPL$ |
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19 | ** General Public License version 3 or (at your option) any later version |
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28 | ****************************************************************************/ |
29 | |
30 | #include <private/xypolardomain_p.h> |
31 | #include <private/qabstractaxis_p.h> |
32 | #include <QtCore/QtMath> |
33 | |
34 | QT_CHARTS_BEGIN_NAMESPACE |
35 | |
36 | XYPolarDomain::XYPolarDomain(QObject *parent) |
37 | : PolarDomain(parent) |
38 | { |
39 | } |
40 | |
41 | XYPolarDomain::~XYPolarDomain() |
42 | { |
43 | } |
44 | |
45 | void XYPolarDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY) |
46 | { |
47 | bool axisXChanged = false; |
48 | bool axisYChanged = false; |
49 | |
50 | if (!qFuzzyCompare(p1: m_minX, p2: minX) || !qFuzzyCompare(p1: m_maxX, p2: maxX)) { |
51 | m_minX = minX; |
52 | m_maxX = maxX; |
53 | axisXChanged = true; |
54 | if (!m_signalsBlocked) |
55 | emit rangeHorizontalChanged(min: m_minX, max: m_maxX); |
56 | } |
57 | |
58 | if (!qFuzzyCompare(p1: m_minY, p2: minY) || !qFuzzyCompare(p1: m_maxY, p2: maxY)) { |
59 | m_minY = minY; |
60 | m_maxY = maxY; |
61 | axisYChanged = true; |
62 | if (!m_signalsBlocked) |
63 | emit rangeVerticalChanged(min: m_minY, max: m_maxY); |
64 | } |
65 | |
66 | if (axisXChanged || axisYChanged) |
67 | emit updated(); |
68 | } |
69 | |
70 | |
71 | void XYPolarDomain::zoomIn(const QRectF &rect) |
72 | { |
73 | storeZoomReset(); |
74 | qreal dx = spanX() / m_size.width(); |
75 | qreal dy = spanY() / m_size.height(); |
76 | |
77 | qreal maxX = m_maxX; |
78 | qreal minX = m_minX; |
79 | qreal minY = m_minY; |
80 | qreal maxY = m_maxY; |
81 | |
82 | maxX = minX + dx * rect.right(); |
83 | minX = minX + dx * rect.left(); |
84 | minY = maxY - dy * rect.bottom(); |
85 | maxY = maxY - dy * rect.top(); |
86 | |
87 | setRange(minX, maxX, minY, maxY); |
88 | } |
89 | |
90 | void XYPolarDomain::zoomOut(const QRectF &rect) |
91 | { |
92 | storeZoomReset(); |
93 | qreal dx = spanX() / rect.width(); |
94 | qreal dy = spanY() / rect.height(); |
95 | |
96 | qreal maxX = m_maxX; |
97 | qreal minX = m_minX; |
98 | qreal minY = m_minY; |
99 | qreal maxY = m_maxY; |
100 | |
101 | minX = maxX - dx * rect.right(); |
102 | maxX = minX + dx * m_size.width(); |
103 | maxY = minY + dy * rect.bottom(); |
104 | minY = maxY - dy * m_size.height(); |
105 | |
106 | setRange(minX, maxX, minY, maxY); |
107 | } |
108 | |
109 | void XYPolarDomain::move(qreal dx, qreal dy) |
110 | { |
111 | // One unit scrolls one degree angular and one pixel radial |
112 | qreal x = spanX() / 360.0; |
113 | qreal y = spanY() / m_radius; |
114 | |
115 | qreal maxX = m_maxX; |
116 | qreal minX = m_minX; |
117 | qreal minY = m_minY; |
118 | qreal maxY = m_maxY; |
119 | |
120 | if (dx != 0) { |
121 | minX = minX + x * dx; |
122 | maxX = maxX + x * dx; |
123 | } |
124 | if (dy != 0) { |
125 | minY = minY + y * dy; |
126 | maxY = maxY + y * dy; |
127 | } |
128 | setRange(minX, maxX, minY, maxY); |
129 | } |
130 | |
131 | QPointF XYPolarDomain::calculateDomainPoint(const QPointF &point) const |
132 | { |
133 | if (point == m_center) |
134 | return QPointF(0.0, m_minX); |
135 | |
136 | QLineF line(m_center, point); |
137 | qreal a = 90.0 - line.angle(); |
138 | if (a < 0.0) |
139 | a += 360.0; |
140 | a = ((a / 360.0) * (m_maxX - m_minX)) + m_minX; |
141 | qreal r = m_minY + ((m_maxY - m_minY) * (line.length() / m_radius)); |
142 | return QPointF(a, r); |
143 | } |
144 | |
145 | qreal XYPolarDomain::toAngularCoordinate(qreal value, bool &ok) const |
146 | { |
147 | ok = true; |
148 | qreal f = (value - m_minX) / (m_maxX - m_minX); |
149 | return f * 360.0; |
150 | } |
151 | |
152 | qreal XYPolarDomain::toRadialCoordinate(qreal value, bool &ok) const |
153 | { |
154 | ok = true; |
155 | if (value < m_minY) |
156 | value = m_minY; |
157 | |
158 | // Dont limit the max. The drawing should clip the stuff that goes out of the grid |
159 | qreal f = (value - m_minY) / (m_maxY - m_minY); |
160 | |
161 | return f * m_radius; |
162 | } |
163 | |
164 | // operators |
165 | |
166 | bool Q_AUTOTEST_EXPORT operator== (const XYPolarDomain &domain1, const XYPolarDomain &domain2) |
167 | { |
168 | return (qFuzzyCompare(p1: domain1.m_maxX, p2: domain2.m_maxX) |
169 | && qFuzzyCompare(p1: domain1.m_maxY, p2: domain2.m_maxY) |
170 | && qFuzzyCompare(p1: domain1.m_minX, p2: domain2.m_minX) |
171 | && qFuzzyCompare(p1: domain1.m_minY, p2: domain2.m_minY)); |
172 | } |
173 | |
174 | |
175 | bool Q_AUTOTEST_EXPORT operator!= (const XYPolarDomain &domain1, const XYPolarDomain &domain2) |
176 | { |
177 | return !(domain1 == domain2); |
178 | } |
179 | |
180 | |
181 | QDebug Q_AUTOTEST_EXPORT operator<<(QDebug dbg, const XYPolarDomain &domain) |
182 | { |
183 | #ifdef QT_NO_TEXTSTREAM |
184 | Q_UNUSED(domain) |
185 | #else |
186 | dbg.nospace() << "AbstractDomain(" << domain.m_minX << ',' << domain.m_maxX << ',' << domain.m_minY << ',' << domain.m_maxY << ')' << domain.m_size; |
187 | #endif |
188 | return dbg.maybeSpace(); |
189 | } |
190 | |
191 | QT_CHARTS_END_NAMESPACE |
192 | |
193 | #include "moc_xypolardomain_p.cpp" |
194 | |