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#include "qrootcanvas.h"
#include <QDebug>
#include "TVirtualX.h"
QRootCanvas::QRootCanvas(QWidget *parent) : QWidget(parent)
{
setAttribute(Qt::WA_PaintOnScreen,false);
setAttribute(Qt::WA_OpaquePaintEvent,true);
setAttribute(Qt::WA_NativeWindow,true);
setUpdatesEnabled(kFALSE);
setMouseTracking(kTRUE);
setMinimumSize(300,200);
timer=new QTimer();
connect(timer,SIGNAL(timeout()),this,SLOT(handleRootEvents()));
timer->start(100);
fCanvas=new TCanvas("canvas",width(),height(),gVirtualX->AddWindow(ULong_t(winId()),UInt_t(width()),UInt_t(height())));
fCanvas->cd();
}
QRootCanvas::~QRootCanvas()
{
delete fCanvas;
}
void QRootCanvas::handleRootEvents()
{
gSystem->ProcessEvents();
}
void QRootCanvas::mouseMoveEvent(QMouseEvent *e)
{
if (fCanvas) {
switch (e->button()) {
case Qt::LeftButton :
fCanvas->HandleInput(kButton1Motion, e->x(), e->y());
break;
case Qt::MidButton :
fCanvas->HandleInput(kButton2Motion, e->x(), e->y());
break;
case Qt::RightButton :
fCanvas->HandleInput(kButton3Motion, e->x(), e->y());
break;
default:
break;
}
}
}
void QRootCanvas::mousePressEvent(QMouseEvent *e)
{
if (fCanvas) {
switch (e->button()) {
case Qt::LeftButton :
fCanvas->HandleInput(kButton1Down, e->x(), e->y());
break;
case Qt::MidButton :
fCanvas->HandleInput(kButton2Down, e->x(), e->y());
break;
case Qt::RightButton :
// does not work properly on Linux...
// ...adding setAttribute(Qt::WA_PaintOnScreen, true)
// seems to cure the problem
fCanvas->HandleInput(kButton3Down, e->x(), e->y());
break;
default:
break;
}
}
}
void QRootCanvas::mouseReleaseEvent(QMouseEvent *e)
{
if (fCanvas) {
switch (e->button()) {
case Qt::LeftButton :
fCanvas->HandleInput(kButton1Up, e->x(), e->y());
break;
case Qt::MidButton :
fCanvas->HandleInput(kButton2Up, e->x(), e->y());
break;
case Qt::RightButton :
// does not work properly on Linux...
// ...adding setAttribute(Qt::WA_PaintOnScreen, true)
// seems to cure the problem
fCanvas->HandleInput(kButton3Up, e->x(), e->y());
break;
default:
break;
}
}
}
void QRootCanvas::paintEvent(QPaintEvent *)
{
if(fCanvas){
fCanvas->Resize();
fCanvas->Update();
}
}
void QRootCanvas::resizeEvent(QResizeEvent *e)
{
if(fCanvas){
fCanvas->SetCanvasSize(UInt_t(e->size().width()),UInt_t(e->size().height()));
fCanvas->Resize();
fCanvas->Update();
}
}