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QCategoryAxis scrolling support added
Marek Rosa -
r1950:d136a6135e13
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@@ -0,0 +1,70
1 /****************************************************************************
2 **
3 ** Copyright (C) 2012 Digia Plc
4 ** All rights reserved.
5 ** For any questions to Digia, please use contact form at http://qt.digia.com
6 **
7 ** This file is part of the Qt Commercial Charts Add-on.
8 **
9 ** $QT_BEGIN_LICENSE$
10 ** Licensees holding valid Qt Commercial licenses may use this file in
11 ** accordance with the Qt Commercial License Agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and Digia.
14 **
15 ** If you have questions regarding the use of this file, please use
16 ** contact form at http://qt.digia.com
17 ** $QT_END_LICENSE$
18 **
19 ****************************************************************************/
20
21 #include "charts.h"
22 #include "qchart.h"
23 #include "qlineseries.h"
24 #include <QCategoryAxis>
25
26 class CategoryLineChart: public Chart
27 {
28 public:
29 QString name() { return QObject::tr("CategoryLineChart"); }
30 QString category() { return QObject::tr("XYSeries"); }
31 QString subCategory() { return QString::null; }
32
33 QChart* createChart(const DataTable& table) {
34
35 QChart* chart = new QChart();
36 chart->setTitle("Category Line chart");
37
38 QString name("Series ");
39 int nameIndex = 0;
40 foreach (DataList list, table) {
41 QLineSeries *series = new QLineSeries(chart);
42 foreach (Data data, list)
43 series->append(data.first);
44 series->setName(name + QString::number(nameIndex));
45 nameIndex++;
46 chart->addSeries(series);
47 }
48
49 // chart->createDefaultAxes();
50 QCategoryAxis *axisX = new QCategoryAxis;
51 axisX->append("low", 5);
52 axisX->append("optimal", 12);
53 axisX->append("high", 19);
54 axisX->setRange(-1, 20);
55 chart->setAxisX(axisX, chart->series().at(0));
56
57 QCategoryAxis *axisY = new QCategoryAxis;
58 axisY->append("low", 5);
59 axisY->append("optimal", 8);
60 axisY->append("high", 12);
61 axisY->setRange(-5, 20);
62 chart->setAxisY(axisY, chart->series().at(0));
63
64 return chart;
65 }
66
67 };
68
69 DECLARE_CHART(CategoryLineChart)
70
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@@ -6,6 +6,7 SOURCES += \
6 xyseries/scatterchart.cpp \
6 xyseries/scatterchart.cpp \
7 xyseries/splinechart.cpp \
7 xyseries/splinechart.cpp \
8 xyseries/areachart.cpp \
8 xyseries/areachart.cpp \
9 xyseries/categorylinechart.cpp \
9 barseries/verticalstackedbarchart.cpp \
10 barseries/verticalstackedbarchart.cpp \
10 barseries/horizontalstackedbarchart.cpp \
11 barseries/horizontalstackedbarchart.cpp \
11 barseries/verticalbarchart.cpp \
12 barseries/verticalbarchart.cpp \
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@@ -80,8 +80,10 void ChartCategoryAxisX::updateGeometry()
80 QList<QGraphicsItem *> shades = m_shades->childItems();
80 QList<QGraphicsItem *> shades = m_shades->childItems();
81 QList<QGraphicsItem *> axis = m_arrow->childItems();
81 QList<QGraphicsItem *> axis = m_arrow->childItems();
82
82
83 // Q_ASSERT(labels.size() == ticksList.size());
83
84 // Q_ASSERT(layout.size() == ticksList.size());
84 for (int i = 0; i < labels.count(); i++) {
85 labels.at(i)->setVisible(false);
86 }
85
87
86 // axis base line
88 // axis base line
87 QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0));
89 QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0));
@@ -97,10 +99,17 void ChartCategoryAxisX::updateGeometry()
97 const QRectF& rect = labelItem->boundingRect();
99 const QRectF& rect = labelItem->boundingRect();
98 QPointF center = rect.center();
100 QPointF center = rect.center();
99 labelItem->setTransformOriginPoint(center.x(), center.y());
101 labelItem->setTransformOriginPoint(center.x(), center.y());
100 if (i < ticksList.count())
102 if (i < layout.size() - 1) {
101 labelItem->setPos(layout[i] + (layout[i + 1] - layout[i]) / 2 - center.x(), m_rect.bottom() + label_padding);
103 labelItem->setPos(layout[i] + (layout[i + 1] - layout[i]) / 2 - center.x(), m_rect.bottom() + label_padding);
102 else
104 } else {
103 labelItem->setPos(layout[i] - center.x(), m_rect.bottom() + label_padding);
105 labelItem->setPos(layout[i] - center.x(), m_rect.bottom() + label_padding);
106 }
107
108 // check if the label should be shown
109 if (labelItem->pos().x() + center.x() < m_rect.left() || labelItem->pos().x() + center.x() > m_rect.right())
110 labelItem->setVisible(false);
111 else
112 labelItem->setVisible(true);
104
113
105 m_minWidth += rect.width();
114 m_minWidth += rect.width();
106 m_minHeight = qMax(rect.height()+ label_padding, m_minHeight);
115 m_minHeight = qMax(rect.height()+ label_padding, m_minHeight);
@@ -111,16 +120,22 void ChartCategoryAxisX::updateGeometry()
111 }
120 }
112
121
113 // grid lines and axis line ticks
122 // grid lines and axis line ticks
114 if (layout[i] < m_rect.left() || layout[i] > m_rect.right())
115 continue;
116
117 QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i));
123 QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i));
118 lineItem->setPos(layout[i], m_rect.top());
124 lineItem->setPos(layout[i], m_rect.top());
119 lineItem->setLine(0, 0, 0, m_rect.height());
125 lineItem->setLine(0, 0, 0, m_rect.height());
120
126
121 lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1));
127 QGraphicsLineItem *tickLineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1));
122 lineItem->setPos(layout[i], m_rect.bottom());
128 tickLineItem->setPos(layout[i], m_rect.bottom());
123 lineItem->setLine(0, 0, 0, 5);
129 tickLineItem->setLine(0, 0, 0, 5);
130
131 // check if the grid line and the axis tick should be shown
132 if (lineItem->pos().x() < m_rect.left() || lineItem->pos().x() > m_rect.right()) {
133 lineItem->setVisible(false);
134 tickLineItem->setVisible(false);
135 } else {
136 lineItem->setVisible(true);
137 tickLineItem->setVisible(true);
138 }
124 }
139 }
125
140
126 }
141 }
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@@ -82,10 +82,11 void ChartCategoryAxisY::updateGeometry()
82 QList<QGraphicsItem *> shades = m_shades->childItems();
82 QList<QGraphicsItem *> shades = m_shades->childItems();
83 QList<QGraphicsItem *> axis = m_arrow->childItems();
83 QList<QGraphicsItem *> axis = m_arrow->childItems();
84
84
85 // Q_ASSERT(labels.size() == ticksList.size());
85 // qreal height = 2*m_rect.bottom();
86 // Q_ASSERT(layout.size() == ticksList.size());
87
86
88 qreal height = 2*m_rect.bottom();
87 for (int i = 0; i < labels.count(); i++) {
88 labels.at(i)->setVisible(false);
89 }
89
90
90 // axis base line
91 // axis base line
91 QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0));
92 QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0));
@@ -95,7 +96,6 void ChartCategoryAxisY::updateGeometry()
95
96
96 // label items
97 // label items
97 QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i));
98 QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i));
98
99 if (i < ticksList.count()) {
99 if (i < ticksList.count()) {
100 labelItem->setText(ticksList.at(i));
100 labelItem->setText(ticksList.at(i));
101 }
101 }
@@ -104,18 +104,24 void ChartCategoryAxisY::updateGeometry()
104 QPointF center = rect.center();
104 QPointF center = rect.center();
105 labelItem->setTransformOriginPoint(center.x(), center.y());
105 labelItem->setTransformOriginPoint(center.x(), center.y());
106
106
107 if (i < ticksList.count())
107 if (i < layout.size() - 1)
108 labelItem->setPos(m_rect.left() - rect.width() - label_padding , layout[i] + (layout[i + 1] - layout[i]) / 2 - center.y());
108 labelItem->setPos(m_rect.left() - rect.width() - label_padding , layout[i] + (layout[i + 1] - layout[i]) / 2 - center.y());
109 else
109 else
110 labelItem->setPos(m_rect.left() - rect.width() - label_padding , layout[i]-center.y());
110 labelItem->setPos(m_rect.left() - rect.width() - label_padding , layout[i]-center.y());
111
111
112 if(labelItem->pos().y()+rect.height()>height) {
112 // check if the label should be shown
113 if (labelItem->pos().y() + center.y() < m_rect.top() || labelItem->pos().y() + center.y() > m_rect.bottom())
113 labelItem->setVisible(false);
114 labelItem->setVisible(false);
114 }
115 else
115 else {
116 labelItem->setVisible(true);
116 labelItem->setVisible(true);
117 height=labelItem->pos().y();
117
118 }
118 // if(labelItem->pos().y()+rect.height()>height) {
119 // labelItem->setVisible(false);
120 // }
121 // else {
122 // labelItem->setVisible(true);
123 // height=labelItem->pos().y();
124 // }
119
125
120 m_minWidth=qMax(rect.width()+label_padding,m_minWidth);
126 m_minWidth=qMax(rect.width()+label_padding,m_minWidth);
121 m_minHeight+=rect.height();
127 m_minHeight+=rect.height();
@@ -126,16 +132,22 void ChartCategoryAxisY::updateGeometry()
126 }
132 }
127
133
128 // grid lines and axis line ticks
134 // grid lines and axis line ticks
129 if (layout[i] < m_rect.left() || layout[i] > m_rect.right())
130 continue;
131
132 QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i));
135 QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i));
133 lineItem->setPos(m_rect.left(), layout[i]);
136 lineItem->setPos(m_rect.left(), layout[i]);
134 lineItem->setLine(0, 0, m_rect.width(), 0);
137 lineItem->setLine(0, 0, m_rect.width(), 0);
135
138
136 lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1));
139 QGraphicsLineItem *tickLineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1));
137 lineItem->setPos(m_rect.left(), layout[i]);
140 tickLineItem->setPos(m_rect.left(), layout[i]);
138 lineItem->setLine(-5, 0, 0, 0);
141 tickLineItem->setLine(-5, 0, 0, 0);
142
143 // check if the grid line and the axis tick should be shown
144 if (lineItem->pos().y() < m_rect.top() || lineItem->pos().y() > m_rect.bottom()) {
145 lineItem->setVisible(false);
146 tickLineItem->setVisible(false);
147 } else {
148 lineItem->setVisible(true);
149 tickLineItem->setVisible(true);
150 }
139 }
151 }
140
152
141 }
153 }
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