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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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// W A R N I N G
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// -------------
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//
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// This file is not part of the QtCommercial Chart API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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#ifndef CHARTAXIS_H
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#define CHARTAXIS_H
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#include "qchartglobal.h"
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#include "chartelement_p.h"
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#include "axisanimation_p.h"
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#include <QGraphicsItem>
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#include <QGraphicsLayoutItem>
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#include <QFont>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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class QAbstractAxis;
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class ChartPresenter;
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class ChartAxis : public ChartElement, public QGraphicsLayoutItem
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{
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Q_OBJECT
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Q_INTERFACES(QGraphicsLayoutItem)
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public:
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ChartAxis(QAbstractAxis *axis, QGraphicsItem* item = 0, bool intervalAxis = false);
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~ChartAxis();
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QAbstractAxis* axis() const { return m_axis; }
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void setLabelPadding(int padding);
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int labelPadding() const { return m_labelPadding;};
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void setTitlePadding(int padding);
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int titlePadding() const { return m_titlePadding;};
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QFont titleFont() const;
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QString titleText() const;
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void setLayout(QVector<qreal> &layout);
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QVector<qreal> layout() const { return m_layoutVector; }
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void setAnimation(AxisAnimation *animation);
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ChartAnimation *animation() const { return m_animation; };
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Qt::Orientation orientation() const;
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Qt::Alignment alignment() const;
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void setGeometry(const QRectF &axis, const QRectF &grid);
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QRectF axisGeometry() const { return m_axisRect; }
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QRectF gridGeometry() const { return m_gridRect; }
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void setLabels(const QStringList &labels);
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QStringList labels() const { return m_labelsList; }
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//this flag indicates that axis is used to show intervals it means labels are in between ticks
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bool intervalAxis() const { return m_intervalAxis; }
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virtual QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const;
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QRectF boundingRect() const{
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return QRectF();
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}
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void paint(QPainter*, const QStyleOptionGraphicsItem*, QWidget*)
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{
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}
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//helpers
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static QStringList createValueLabels(qreal max, qreal min, int ticks, const QString &format);
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static QStringList createLogValueLabels(qreal min, qreal max, qreal base, int ticks, const QString& format);
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static QStringList createDateTimeLabels(qreal max, qreal min, int ticks, const QString &format);
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protected:
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void setGeometry(const QRectF &size) { Q_UNUSED(size);};
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virtual void updateGeometry() = 0;
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virtual QVector<qreal> calculateLayout() const = 0;
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QList<QGraphicsItem *> lineItems() { return m_grid->childItems(); };
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QList<QGraphicsItem *> labelItems() { return m_labels->childItems();};
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QList<QGraphicsItem *> shadeItems() { return m_shades->childItems();};
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QList<QGraphicsItem *> arrowItems() { return m_arrow->childItems();};
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QGraphicsSimpleTextItem* titleItem() const { return m_title.data();}
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QFont font() const;
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qreal min() const;
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qreal max() const;
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QRect labelBoundingRect(const QFontMetrics &fn, const QString &label) const;
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//handlers
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public Q_SLOTS:
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void handleVisibleChanged(bool visible);
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void handleArrowVisibleChanged(bool visible);
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void handleGridVisibleChanged(bool visible);
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void handleLabelsVisibleChanged(bool visible);
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void handleShadesVisibleChanged(bool visible);
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void handleLabelsAngleChanged(int angle);
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void handleShadesBrushChanged(const QBrush &brush);
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void handleShadesPenChanged(const QPen &pen);
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void handleArrowPenChanged(const QPen &pen);
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void handleGridPenChanged(const QPen &pen);
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void handleLabelsPenChanged(const QPen &pen);
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void handleLabelsBrushChanged(const QBrush &brush);
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void handleLabelsFontChanged(const QFont &font);
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void handleTitlePenChanged(const QPen &pen);
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void handleTitleBrushChanged(const QBrush &brush);
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void handleTitleFontChanged(const QFont &font);
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void handleTitleTextChanged(const QString &title);
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void handleTitleVisibleChanged(bool visible);
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void handleRangeChanged(qreal min , qreal max);
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Q_SIGNALS:
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void clicked();
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private:
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inline bool isEmpty();
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void createItems(int count);
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void deleteItems(int count);
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void updateLayout(QVector<qreal> &layout);
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void axisSelected();
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void connectSlots();
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private:
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QAbstractAxis *m_axis;
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int m_labelsAngle;
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QRectF m_axisRect;
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QRectF m_gridRect;
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QScopedPointer<QGraphicsItemGroup> m_grid;
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QScopedPointer<QGraphicsItemGroup> m_arrow;
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QScopedPointer<QGraphicsItemGroup> m_shades;
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QScopedPointer<QGraphicsItemGroup> m_labels;
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QScopedPointer<QGraphicsSimpleTextItem> m_title;
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QVector<qreal> m_layoutVector;
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AxisAnimation *m_animation;
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int m_labelPadding;
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QStringList m_labelsList;
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bool m_intervalAxis;
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int m_titlePadding;
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friend class AxisAnimation;
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friend class ArrowItem;
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};
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class ArrowItem: public QGraphicsLineItem
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{
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public:
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explicit ArrowItem(ChartAxis *axis, QGraphicsItem *parent = 0) : QGraphicsLineItem(parent), m_axis(axis) {}
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protected:
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void mousePressEvent(QGraphicsSceneMouseEvent *event) {
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Q_UNUSED(event)
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m_axis->axisSelected();
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}
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QRectF boundingRect() const {
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return shape().boundingRect();
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}
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QPainterPath shape() const {
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QPainterPath path = QGraphicsLineItem::shape();
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QRectF rect = path.boundingRect();
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path.addRect(rect.adjusted(0, 0, m_axis->orientation() != Qt::Horizontal ? 8 : 0, m_axis->orientation() != Qt::Vertical ? 8 : 0));
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return path;
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}
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private:
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ChartAxis *m_axis;
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};
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QTCOMMERCIALCHART_END_NAMESPACE
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#endif /* CHARTAXI_H */
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