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#include "axisitem_p.h"
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#include <QPainter>
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#include <QDebug>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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AxisItem::AxisItem(AxisType type,QGraphicsItem* parent): ChartItem(parent),
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m_ticks(4),
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m_type(type)
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{
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}
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AxisItem::~AxisItem()
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{
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}
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void AxisItem::setSize(const QSize& size)
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{
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m_rect = QRectF(QPoint(0,0),size);
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}
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void AxisItem::setLength(int length)
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{
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QPainterPath path;
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path.moveTo(QPointF(0,0));
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path.lineTo(length,0);
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// path.lineTo(length-4,0);
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// path.lineTo(length,3);
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// path.lineTo(length-4,6);
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// path.lineTo(length-4,4);
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// path.lineTo(0,4);
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// path.lineTo(0,2);
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m_path=path;
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update();
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}
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QRectF AxisItem::boundingRect() const
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{
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return m_rect;
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}
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void AxisItem::setPlotDomain(const PlotDomain& plotDomain)
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{
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m_plotDomain = plotDomain;
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}
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void AxisItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,QWidget *widget)
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{
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if (!m_rect.isValid())
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return;
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if(m_type==X_AXIS) {
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const qreal deltaX = (m_rect.width() -1) / m_ticks;
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for (int i = 0; i <= m_ticks; ++i) {
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int x = i * deltaX + m_rect.left();
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qreal label = m_plotDomain.m_minX + (i * m_plotDomain.spanX()
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/ m_ticks);
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painter->drawLine(x, m_rect.top()+1, x, m_rect.bottom());
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//painter->drawLine(x, m_rect.bottom(), x, m_rect.bottom() + 5);
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painter->drawText(x - 50, m_rect.bottom() + 5, 100, 20,
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Qt::AlignHCenter | Qt::AlignTop,
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QString::number(label));
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}
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}
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if(m_type==Y_AXIS) {
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const qreal deltaY = (m_rect.height() - 1) / m_ticks;
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for (int j = 0; j <= m_ticks; ++j) {
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int y = j * -deltaY + m_rect.bottom();
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qreal label = m_plotDomain.m_minY + (j * m_plotDomain.spanY()
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/ m_ticks);
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painter->drawLine(m_rect.left(), y, m_rect.right()-1, y);
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//painter->drawLine(m_rect.left() - 5, y, m_rect.left(), y);
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//TODO : margin = 50 ;
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painter->drawText(m_rect.left() - 50, y - 10, 50 - 5, 20,
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Qt::AlignRight | Qt::AlignVCenter,
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QString::number(label));
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}
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}
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//painter->drawRect(m_rect.adjusted(0, 0, -1, -1));
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}
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//TODO "nice numbers algorithm"
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QTCOMMERCIALCHART_END_NAMESPACE
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