1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the Qt Charts module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:GPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU 19 ** General Public License version 3 or (at your option) any later version 20 ** approved by the KDE Free Qt Foundation. The licenses are as published by 21 ** the Free Software Foundation and appearing in the file LICENSE.GPL3 22 ** included in the packaging of this file. Please review the following 23 ** information to ensure the GNU General Public License requirements will 24 ** be met: https://www.gnu.org/licenses/gpl-3.0.html. 25 ** 26 ** $QT_END_LICENSE$ 27 ** 28 ****************************************************************************/ 29 30 // W A R N I N G 31 // ------------- 32 // 33 // This file is not part of the Qt Chart API. It exists purely as an 34 // implementation detail. This header file may change from version to 35 // version without notice, or even be removed. 36 // 37 // We mean it. 38 39 40 #ifndef ABSTRACTBARCHARTITEM_H 41 #define ABSTRACTBARCHARTITEM_H 42 43 #include <private/chartitem_p.h> 44 #include <QtCharts/QAbstractBarSeries> 45 #include <QtCharts/private/qchartglobal_p.h> 46 #include <QtGui/QPen> 47 #include <QtGui/QBrush> 48 49 QT_CHARTS_BEGIN_NAMESPACE 50 51 class Bar; 52 class QAxisCategories; 53 class QChart; 54 class BarAnimation; 55 class QBarSetPrivate; 56 class QAbstractAxis; 57 58 class Q_CHARTS_PRIVATE_EXPORT AbstractBarChartItem : public ChartItem 59 { 60 Q_OBJECT 61 public: 62 AbstractBarChartItem(QAbstractBarSeries *series, QGraphicsItem* item = 0); 63 virtual ~AbstractBarChartItem(); 64 65 public: 66 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget); 67 QRectF boundingRect() const; 68 69 virtual QVector<QRectF> calculateLayout() = 0; 70 void initializeFullLayout(); 71 virtual void initializeLayout(int set, int category, int layoutIndex, bool resetAnimation) = 0; 72 virtual void applyLayout(const QVector<QRectF> &layout); 73 virtual void setAnimation(BarAnimation *animation); 74 virtual ChartAnimation *animation() const; 75 void setLayout(const QVector<QRectF> &layout); geometry()76 QRectF geometry() const { return m_rect;} 77 void resetAnimation(); 78 79 public Q_SLOTS: 80 void handleDomainUpdated(); 81 void handleLayoutChanged(); 82 void handleLabelsVisibleChanged(bool visible); 83 void handleDataStructureChanged(); // structure of of series has changed, recreate graphic items 84 void handleVisibleChanged(); 85 void handleOpacityChanged(); 86 void handleUpdatedBars(); 87 void handleLabelsPositionChanged(); 88 virtual void positionLabels(); 89 void handleBarValueChange(int index, QBarSet *barset); 90 void handleBarValueAdd(int index, int count, QBarSet *barset); 91 void handleBarValueRemove(int index, int count, QBarSet *barset); 92 void handleSeriesAdded(QAbstractSeries *series); 93 void handleSeriesRemoved(QAbstractSeries *series); 94 95 protected: 96 void positionLabelsVertical(); 97 void createLabelItems(); 98 void handleSetStructureChange(); 99 virtual QString generateLabelText(int set, int category, qreal value); 100 void updateBarItems(); 101 virtual void markLabelsDirty(QBarSet *barset, int index, int count); 102 void calculateSeriesPositionAdjustmentAndWidth(); 103 104 QRectF m_rect; 105 QVector<QRectF> m_layout; 106 107 BarAnimation *m_animation; 108 109 QAbstractBarSeries *m_series; // Not owned. 110 QMap<QBarSet *, QList<Bar *> > m_barMap; 111 QMap<QBarSet *, QHash<int, Bar *> > m_indexForBarMap; 112 int m_firstCategory; 113 int m_lastCategory; 114 int m_categoryCount; 115 QSizeF m_oldSize; 116 bool m_labelItemsMissing; 117 Qt::Orientation m_orientation; 118 bool m_resetAnimation; 119 qreal m_seriesPosAdjustment; 120 qreal m_seriesWidth; 121 }; 122 123 QT_CHARTS_END_NAMESPACE 124 125 #endif // ABSTRACTBARCHARTITEM_H 126