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Clone from http://code.qt.io/qt/qtcharts.git

Added QChart::zoomReset() and QChart::isZoomed()...
Miikka Heikkinen -
r2545:d1d46096c185
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@@ -445,6 +445,31 void ChartDataSet::zoomOutDomain(const QRectF &rect)
445 445 domain->blockRangeSignals(false);
446 446 }
447 447
448 void ChartDataSet::zoomResetDomain()
449 {
450 QList<AbstractDomain*> domains;
451 foreach (QAbstractSeries *s, m_seriesList) {
452 AbstractDomain *domain = s->d_ptr->domain();
453 s->d_ptr->m_domain->blockRangeSignals(true);
454 domains << domain;
455 }
456
457 foreach (AbstractDomain *domain, domains)
458 domain->zoomReset();
459
460 foreach (AbstractDomain *domain, domains)
461 domain->blockRangeSignals(false);
462 }
463
464 bool ChartDataSet::isZoomedDomain()
465 {
466 foreach (QAbstractSeries *s, m_seriesList) {
467 if (s->d_ptr->domain()->isZoomed())
468 return true;
469 }
470 return false;
471 }
472
448 473 void ChartDataSet::scrollDomain(qreal dx, qreal dy)
449 474 {
450 475 QList<AbstractDomain*> domains;
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@@ -62,6 +62,8 public:
62 62
63 63 void zoomInDomain(const QRectF &rect);
64 64 void zoomOutDomain(const QRectF &rect);
65 void zoomResetDomain();
66 bool isZoomedDomain();
65 67 void scrollDomain(qreal dx, qreal dy);
66 68
67 69 QPointF mapToValue(const QPointF &position, QAbstractSeries *series = 0);
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@@ -30,7 +30,13 AbstractDomain::AbstractDomain(QObject *parent)
30 30 m_maxX(0),
31 31 m_minY(0),
32 32 m_maxY(0),
33 m_signalsBlocked(false)
33 m_signalsBlocked(false),
34 m_zoomed(false),
35 m_zoomResetMinX(0),
36 m_zoomResetMaxX(0),
37 m_zoomResetMinY(0),
38 m_zoomResetMaxY(0)
39
34 40 {
35 41 }
36 42
@@ -131,6 +137,28 void AbstractDomain::blockRangeSignals(bool block)
131 137 }
132 138 }
133 139
140 void AbstractDomain::zoomReset()
141 {
142 if (m_zoomed) {
143 setRange(m_zoomResetMinX,
144 m_zoomResetMaxX,
145 m_zoomResetMinY,
146 m_zoomResetMaxY);
147 m_zoomed = false;
148 }
149 }
150
151 void AbstractDomain::storeZoomReset()
152 {
153 if (!m_zoomed) {
154 m_zoomed = true;
155 m_zoomResetMinX = m_minX;
156 m_zoomResetMaxX = m_maxX;
157 m_zoomResetMinY = m_minY;
158 m_zoomResetMaxY = m_maxY;
159 }
160 }
161
134 162 //algorithm defined by Paul S.Heckbert GraphicalGems I
135 163
136 164 void AbstractDomain::looseNiceNumbers(qreal &min, qreal &max, int &ticksCount)
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@@ -80,6 +80,10 public:
80 80 void blockRangeSignals(bool block);
81 81 bool rangeSignalsBlocked() const { return m_signalsBlocked; }
82 82
83 void zoomReset();
84 void storeZoomReset();
85 bool isZoomed() { return m_zoomed; }
86
83 87 friend bool QTCOMMERCIALCHART_AUTOTEST_EXPORT operator== (const AbstractDomain &domain1, const AbstractDomain &domain2);
84 88 friend bool QTCOMMERCIALCHART_AUTOTEST_EXPORT operator!= (const AbstractDomain &domain1, const AbstractDomain &domain2);
85 89 friend QDebug QTCOMMERCIALCHART_AUTOTEST_EXPORT operator<<(QDebug dbg, const AbstractDomain &domain);
@@ -116,6 +120,11 protected:
116 120 qreal m_maxY;
117 121 QSizeF m_size;
118 122 bool m_signalsBlocked;
123 bool m_zoomed;
124 qreal m_zoomResetMinX;
125 qreal m_zoomResetMaxX;
126 qreal m_zoomResetMinY;
127 qreal m_zoomResetMaxY;
119 128 };
120 129
121 130 QTCOMMERCIALCHART_END_NAMESPACE
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@@ -78,6 +78,7 void LogXLogYDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY)
78 78
79 79 void LogXLogYDomain::zoomIn(const QRectF &rect)
80 80 {
81 storeZoomReset();
81 82 qreal logLeftX = rect.left() * (m_logRightX - m_logLeftX) / m_size.width() + m_logLeftX;
82 83 qreal logRightX = rect.right() * (m_logRightX - m_logLeftX) / m_size.width() + m_logLeftX;
83 84 qreal leftX = qPow(m_logBaseX, logLeftX);
@@ -97,6 +98,7 void LogXLogYDomain::zoomIn(const QRectF &rect)
97 98
98 99 void LogXLogYDomain::zoomOut(const QRectF &rect)
99 100 {
101 storeZoomReset();
100 102 const qreal factorX = m_size.width() / rect.width();
101 103 const qreal factorY = m_size.height() / rect.height();
102 104
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@@ -78,6 +78,7 void LogXLogYPolarDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal max
78 78
79 79 void LogXLogYPolarDomain::zoomIn(const QRectF &rect)
80 80 {
81 storeZoomReset();
81 82 qreal logLeftX = rect.left() * (m_logRightX - m_logLeftX) / m_size.width() + m_logLeftX;
82 83 qreal logRightX = rect.right() * (m_logRightX - m_logLeftX) / m_size.width() + m_logLeftX;
83 84 qreal leftX = qPow(m_logBaseX, logLeftX);
@@ -97,6 +98,7 void LogXLogYPolarDomain::zoomIn(const QRectF &rect)
97 98
98 99 void LogXLogYPolarDomain::zoomOut(const QRectF &rect)
99 100 {
101 storeZoomReset();
100 102 const qreal factorX = m_size.width() / rect.width();
101 103
102 104 qreal logLeftX = m_logLeftX + (m_logRightX - m_logLeftX) / 2.0 * (1.0 - factorX);
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@@ -70,6 +70,7 void LogXYDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY)
70 70
71 71 void LogXYDomain::zoomIn(const QRectF &rect)
72 72 {
73 storeZoomReset();
73 74 qreal logLeftX = rect.left() * (m_logRightX - m_logLeftX) / m_size.width() + m_logLeftX;
74 75 qreal logRightX = rect.right() * (m_logRightX - m_logLeftX) / m_size.width() + m_logLeftX;
75 76 qreal leftX = qPow(m_logBaseX, logLeftX);
@@ -89,6 +90,7 void LogXYDomain::zoomIn(const QRectF &rect)
89 90
90 91 void LogXYDomain::zoomOut(const QRectF &rect)
91 92 {
93 storeZoomReset();
92 94 const qreal factorX = m_size.width() / rect.width();
93 95
94 96 qreal logLeftX = m_logLeftX + (m_logRightX - m_logLeftX) / 2 * (1 - factorX);
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@@ -70,6 +70,7 void LogXYPolarDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY)
70 70
71 71 void LogXYPolarDomain::zoomIn(const QRectF &rect)
72 72 {
73 storeZoomReset();
73 74 qreal logLeftX = rect.left() * (m_logRightX - m_logLeftX) / m_size.width() + m_logLeftX;
74 75 qreal logRightX = rect.right() * (m_logRightX - m_logLeftX) / m_size.width() + m_logLeftX;
75 76 qreal leftX = qPow(m_logBaseX, logLeftX);
@@ -89,6 +90,7 void LogXYPolarDomain::zoomIn(const QRectF &rect)
89 90
90 91 void LogXYPolarDomain::zoomOut(const QRectF &rect)
91 92 {
93 storeZoomReset();
92 94 const qreal factorX = m_size.width() / rect.width();
93 95
94 96 qreal logLeftX = m_logLeftX + (m_logRightX - m_logLeftX) / 2.0 * (1.0 - factorX);
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@@ -70,6 +70,7 void XLogYDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY)
70 70
71 71 void XLogYDomain::zoomIn(const QRectF &rect)
72 72 {
73 storeZoomReset();
73 74 qreal dx = spanX() / m_size.width();
74 75 qreal maxX = m_maxX;
75 76 qreal minX = m_minX;
@@ -89,6 +90,7 void XLogYDomain::zoomIn(const QRectF &rect)
89 90
90 91 void XLogYDomain::zoomOut(const QRectF &rect)
91 92 {
93 storeZoomReset();
92 94 qreal dx = spanX() / rect.width();
93 95 qreal maxX = m_maxX;
94 96 qreal minX = m_minX;
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@@ -70,6 +70,7 void XLogYPolarDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY)
70 70
71 71 void XLogYPolarDomain::zoomIn(const QRectF &rect)
72 72 {
73 storeZoomReset();
73 74 qreal dx = spanX() / m_size.width();
74 75 qreal maxX = m_maxX;
75 76 qreal minX = m_minX;
@@ -89,6 +90,7 void XLogYPolarDomain::zoomIn(const QRectF &rect)
89 90
90 91 void XLogYPolarDomain::zoomOut(const QRectF &rect)
91 92 {
93 storeZoomReset();
92 94 qreal dx = spanX() / rect.width();
93 95 qreal maxX = m_maxX;
94 96 qreal minX = m_minX;
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@@ -61,6 +61,7 void XYDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY)
61 61
62 62 void XYDomain::zoomIn(const QRectF &rect)
63 63 {
64 storeZoomReset();
64 65 qreal dx = spanX() / m_size.width();
65 66 qreal dy = spanY() / m_size.height();
66 67
@@ -79,6 +80,7 void XYDomain::zoomIn(const QRectF &rect)
79 80
80 81 void XYDomain::zoomOut(const QRectF &rect)
81 82 {
83 storeZoomReset();
82 84 qreal dx = spanX() / rect.width();
83 85 qreal dy = spanY() / rect.height();
84 86
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@@ -61,6 +61,7 void XYPolarDomain::setRange(qreal minX, qreal maxX, qreal minY, qreal maxY)
61 61
62 62 void XYPolarDomain::zoomIn(const QRectF &rect)
63 63 {
64 storeZoomReset();
64 65 qreal dx = spanX() / m_size.width();
65 66 qreal dy = spanY() / m_size.height();
66 67
@@ -79,6 +80,7 void XYPolarDomain::zoomIn(const QRectF &rect)
79 80
80 81 void XYPolarDomain::zoomOut(const QRectF &rect)
81 82 {
83 storeZoomReset();
82 84 qreal dx = spanX() / rect.width();
83 85 qreal dy = spanY() / rect.height();
84 86
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@@ -347,6 +347,26 void QChart::zoom(qreal factor)
347 347 d_ptr->zoomOut(1.0 / factor);
348 348 }
349 349
350
351 /*!
352 Resets the series domains to what they were before any zoom method was called.
353 Note that this will also reset any scrolls and explicit axis range settings done between
354 the first zoom operation and calling this method. If no zoom operation has been
355 done, this method does nothing.
356 */
357 void QChart::zoomReset()
358 {
359 d_ptr->zoomReset();
360 }
361
362 /*!
363 Returns true if any series has a zoomed domain.
364 */
365 bool QChart::isZoomed()
366 {
367 return d_ptr->isZoomed();
368 }
369
350 370 /*!
351 371 Returns a pointer to the horizontal axis attached to the specified \a series.
352 372 If no \a series is specified, the first horizontal axis added to the chart is returned.
@@ -749,6 +769,16 void QChartPrivate::zoomIn(const QRectF &rect)
749 769
750 770 }
751 771
772 void QChartPrivate::zoomReset()
773 {
774 m_dataset->zoomResetDomain();
775 }
776
777 bool QChartPrivate::isZoomed()
778 {
779 return m_dataset->isZoomedDomain();
780 }
781
752 782 void QChartPrivate::zoomOut(qreal factor)
753 783 {
754 784 const QRectF geometry = m_presenter->geometry();
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@@ -126,6 +126,8 public:
126 126
127 127 void zoomIn(const QRectF &rect);
128 128 void zoom(qreal factor);
129 void zoomReset();
130 bool isZoomed();
129 131
130 132 void scroll(qreal dx, qreal dy);
131 133
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@@ -61,6 +61,8 public:
61 61 void zoomIn(qreal factor);
62 62 void zoomOut(qreal factor);
63 63 void zoomIn(const QRectF &rect);
64 void zoomReset();
65 bool isZoomed();
64 66 void scroll(qreal dx, qreal dy);
65 67 };
66 68
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@@ -177,7 +177,7 void QChartView::mouseMoveEvent(QMouseEvent *event)
177 177 /*!
178 178 If left mouse button is released and the rubber band is enabled then \a event is accepted and
179 179 the view is zoomed into the rect specified by the rubber band.
180 If it is a right mouse button \a event then the rubber band is dismissed and the zoom is canceled.
180 If it is a right mouse button \a event then the view is zoomed out.
181 181 */
182 182 void QChartView::mouseReleaseEvent(QMouseEvent *event)
183 183 {
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@@ -105,6 +105,7 private slots:
105 105 void zoomIn();
106 106 void zoomOut_data();
107 107 void zoomOut();
108 void zoomReset();
108 109 void createDefaultAxesForLineSeries_data();
109 110 void createDefaultAxesForLineSeries();
110 111 void axisPolarOrientation();
@@ -852,6 +853,77 void tst_QChart::zoomOut()
852 853
853 854 }
854 855
856 void tst_QChart::zoomReset()
857 {
858 createTestData();
859 m_chart->createDefaultAxes();
860 QValueAxis *axisX = qobject_cast<QValueAxis *>(m_chart->axisX());
861 QVERIFY(axisX != 0);
862 QValueAxis *axisY = qobject_cast<QValueAxis *>(m_chart->axisY());
863 QVERIFY(axisY != 0);
864
865 qreal minX = axisX->min();
866 qreal minY = axisY->min();
867 qreal maxX = axisX->max();
868 qreal maxY = axisY->max();
869
870 QVERIFY(!m_chart->isZoomed());
871
872 m_chart->zoomIn();
873
874 QVERIFY(m_chart->isZoomed());
875 QVERIFY(minX < axisX->min());
876 QVERIFY(maxX > axisX->max());
877 QVERIFY(minY < axisY->min());
878 QVERIFY(maxY > axisY->max());
879
880 m_chart->zoomReset();
881
882 // Reset after zoomIn should restore originals
883 QVERIFY(!m_chart->isZoomed());
884 QVERIFY(minX == axisX->min());
885 QVERIFY(maxX == axisX->max());
886 QVERIFY(minY == axisY->min());
887 QVERIFY(maxY == axisY->max());
888
889 m_chart->zoomOut();
890
891 QVERIFY(m_chart->isZoomed());
892 QVERIFY(minX > axisX->min());
893 QVERIFY(maxX < axisX->max());
894 QVERIFY(minY > axisY->min());
895 QVERIFY(maxY < axisY->max());
896
897 m_chart->zoomReset();
898
899 // Reset after zoomOut should restore originals
900 QVERIFY(!m_chart->isZoomed());
901 QVERIFY(minX == axisX->min());
902 QVERIFY(maxX == axisX->max());
903 QVERIFY(minY == axisY->min());
904 QVERIFY(maxY == axisY->max());
905
906 axisX->setRange(234, 345);
907 axisY->setRange(345, 456);
908
909 minX = axisX->min();
910 minY = axisY->min();
911 maxX = axisX->max();
912 maxY = axisY->max();
913
914 QVERIFY(!m_chart->isZoomed());
915
916 m_chart->zoomReset();
917
918 // Reset without zoom should not change anything
919 QVERIFY(!m_chart->isZoomed());
920 QVERIFY(minX == axisX->min());
921 QVERIFY(maxX == axisX->max());
922 QVERIFY(minY == axisY->min());
923 QVERIFY(maxY == axisY->max());
924
925 }
926
855 927 void tst_QChart::createDefaultAxesForLineSeries_data()
856 928 {
857 929 QTest::addColumn<qreal>("series1minX");
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