axisitem.cpp
95 lines
| 2.2 KiB
| text/x-c
|
CppLexer
/ src / axisitem.cpp
Michal Klocek
|
r67 | #include "axisitem_p.h" | ||
| #include <QPainter> | ||||
| #include <QDebug> | ||||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
| AxisItem::AxisItem(AxisType type,QGraphicsItem* parent): ChartItem(parent), | ||||
| m_ticks(4), | ||||
| m_type(type) | ||||
| { | ||||
| } | ||||
| AxisItem::~AxisItem() | ||||
| { | ||||
| } | ||||
| void AxisItem::setSize(const QSize& size) | ||||
| { | ||||
| m_rect = QRectF(QPoint(0,0),size); | ||||
| } | ||||
| void AxisItem::setLength(int length) | ||||
| { | ||||
| QPainterPath path; | ||||
| path.moveTo(QPointF(0,0)); | ||||
| path.lineTo(length,0); | ||||
| // path.lineTo(length-4,0); | ||||
| // path.lineTo(length,3); | ||||
| // path.lineTo(length-4,6); | ||||
| // path.lineTo(length-4,4); | ||||
| // path.lineTo(0,4); | ||||
| // path.lineTo(0,2); | ||||
| m_path=path; | ||||
| update(); | ||||
| } | ||||
| QRectF AxisItem::boundingRect() const | ||||
| { | ||||
| return m_rect; | ||||
| } | ||||
| void AxisItem::setPlotDomain(const PlotDomain& plotDomain) | ||||
| { | ||||
| m_plotDomain = plotDomain; | ||||
| } | ||||
| void AxisItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,QWidget *widget) | ||||
| { | ||||
| if (!m_rect.isValid()) | ||||
| return; | ||||
| if(m_type==X_AXIS) { | ||||
| const qreal deltaX = (m_rect.width() -1) / m_ticks; | ||||
| for (int i = 0; i <= m_ticks; ++i) { | ||||
| int x = i * deltaX + m_rect.left(); | ||||
| qreal label = m_plotDomain.m_minX + (i * m_plotDomain.spanX() | ||||
| / m_ticks); | ||||
| painter->drawLine(x, m_rect.top()+1, x, m_rect.bottom()); | ||||
| //painter->drawLine(x, m_rect.bottom(), x, m_rect.bottom() + 5); | ||||
| painter->drawText(x - 50, m_rect.bottom() + 5, 100, 20, | ||||
| Qt::AlignHCenter | Qt::AlignTop, | ||||
| QString::number(label)); | ||||
| } | ||||
| } | ||||
| if(m_type==Y_AXIS) { | ||||
| const qreal deltaY = (m_rect.height() - 1) / m_ticks; | ||||
| for (int j = 0; j <= m_ticks; ++j) { | ||||
| int y = j * -deltaY + m_rect.bottom(); | ||||
| qreal label = m_plotDomain.m_minY + (j * m_plotDomain.spanY() | ||||
| / m_ticks); | ||||
| painter->drawLine(m_rect.left(), y, m_rect.right()-1, y); | ||||
| //painter->drawLine(m_rect.left() - 5, y, m_rect.left(), y); | ||||
| //TODO : margin = 50 ; | ||||
| painter->drawText(m_rect.left() - 50, y - 10, 50 - 5, 20, | ||||
| Qt::AlignRight | Qt::AlignVCenter, | ||||
| QString::number(label)); | ||||
| } | ||||
| } | ||||
| //painter->drawRect(m_rect.adjusted(0, 0, -1, -1)); | ||||
| } | ||||
| //TODO "nice numbers algorithm" | ||||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||