229 lines
5.5 KiB
C++
229 lines
5.5 KiB
C++
/*******************************************************************************
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* *
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* Société de Transports de Montréal. *
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* 2013 *
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* *
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* Projet Zones Tests *
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* *
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* *
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* *
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*******************************************************************************/
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/*
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Description:
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Élément graphique qui affiche une règle de graduation temporelle dans le bas
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de la zone d'affichage.
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Utilisée dans la page de visualisation des passages de train.
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*/
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/* ************************************************************************** */
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/* Revision:
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### 20131024 JFM
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Verision d'origine.
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### YYYYMMDD Description du besoin ou du bug
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Description du changement.
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*/
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/* ************************************************************************** */
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#include "GraphRulerWidget.h"
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#include <QPainter>
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#include <QTextStream>
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#include <QStyleOptionGraphicsItem>
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CGraphRulerWidget::CGraphRulerWidget(qreal RulerPixelWidth, QGraphicsItem *Parent)
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{
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setParentItem(Parent);
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mPixelWidth = RulerPixelWidth;
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mPixelPitch = RulerPixelWidth/RULER_NB_TICKS;
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mRulerPixmap = new QPixmap(RulerPixelWidth,boundingRect().height()+1);
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mValidRange = false;
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}
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CGraphRulerWidget::~CGraphRulerWidget()
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{
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delete mRulerPixmap;
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}
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void CGraphRulerWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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Q_UNUSED(option)
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Q_UNUSED(widget)
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if(mValidRange == false)
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return;
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painter->setClipRect(option->exposedRect);
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painter->drawPixmap(0,0,*mRulerPixmap);
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// static int toto = 0;
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// qDebug("CGraphRulerWidget::paint %d",toto++);
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// qreal x = 0;
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// QRectF TextRect(0,0,100,10);
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// QString TimeText;
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// qreal tick = (mEndTime - mStartTime)/mPixelWidth;
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// QFont font;
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// font.setPixelSize(12);
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// painter->setFont(font);
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// for(int i = 0; i <= RULER_NB_TICKS; i++)
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// {
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// QLine line;
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// if(i%20 == 0)
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// {
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// TimeText.clear();
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// line.setLine(x,0,x,10); //long line
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// TextRect.moveCenter(QPoint(x,15));
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// qreal time = (x*tick) + mStartTime;
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// if(time < 1000)
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// {
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// QTextStream(&TimeText) << time << " ns";
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// }
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// else
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// {
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// time /= 1000;
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// if(time < 1000)
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// {
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// QTextStream(&TimeText) << time << " us";
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// }
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// else
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// {
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// time /= 1000;
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// if(time < 1000)
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// {
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// QTextStream(&TimeText) << time << " ms";
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// }
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// else
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// {
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// time /= 1000;
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// if(time < 1000)
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// {
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// QTextStream(&TimeText) << time << " s";
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// }
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// }
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// }
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// }
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// painter->drawText(TextRect,Qt::AlignCenter,TimeText);
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// }
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// else
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// {
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// line.setLine(x,0,x,5);
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// }
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// painter->drawLine(line);
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// x += mPixelPitch;
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// }
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}
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unsigned int CGraphRulerWidget::SetRange(quint64 StartTime, quint64 EndTime)
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{
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if(StartTime > EndTime)
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return false;
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mStartTime = StartTime;
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mEndTime = EndTime;
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mValidRange = true;
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Render();
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update();
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return RET_OK;
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}
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void CGraphRulerWidget::Render()
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{
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qreal x = 0;
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QRectF TextRect(0,0,100,10);
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QString TimeText;
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qreal tick = (mEndTime - mStartTime)/mPixelWidth;
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QFont font;
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mRulerPixmap->fill(Qt::white);
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QPainter *painter = new QPainter(mRulerPixmap);
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font.setPixelSize(12);
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painter->setFont(font);
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for(int i = 0; i <= RULER_NB_TICKS; i++)
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{
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QLine line;
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if(i%20 == 0)
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{
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TimeText.clear();
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line.setLine(x,0,x,10); //long line
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TextRect.moveCenter(QPoint(x,15));
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if(i == 0)
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TextRect.moveLeft(x);
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else if(i == RULER_NB_TICKS)
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TextRect.moveRight(x);
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qreal time = (x*tick) + mStartTime;
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if(time < 1000)
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{
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QTextStream(&TimeText) << time << " ns";
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}
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else
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{
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time /= 1000;
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if(time < 1000)
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{
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QTextStream(&TimeText) << time << " us";
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}
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else
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{
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time /= 1000;
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if(time < 1000)
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{
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QTextStream(&TimeText) << time << " ms";
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}
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else
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{
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time /= 1000;
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if(time < 1000)
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{
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QTextStream(&TimeText) << time << " s";
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}
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}
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}
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}
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if(i == 0)
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painter->drawText(TextRect,Qt::AlignLeft | Qt::AlignVCenter,TimeText);
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else if(i == RULER_NB_TICKS)
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painter->drawText(TextRect,Qt::AlignRight | Qt::AlignVCenter,TimeText);
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else
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painter->drawText(TextRect,Qt::AlignCenter,TimeText);
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}
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else
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{
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line.setLine(x,0,x,5);
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}
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painter->drawLine(line);
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x += mPixelPitch;
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}
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delete painter;
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}
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void CGraphRulerWidget::resizeEvent(QGraphicsSceneResizeEvent *event)
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{
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Q_UNUSED(event)
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delete mRulerPixmap;
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mRulerPixmap = new QPixmap(mPixelWidth,boundingRect().height()+1);
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}
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