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New functions with QT GUI (presented in the 4th report)

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-Fullscreen
-Change Autoresize dynamically (after windows are created)
-Zoom on mouse location (with wheel)
-Panning by click'ndrag posible after zooming
pull/13383/head
Yannick Verdie 15 years ago
parent 673b4404a9
commit f4dba4686d
2 changed files with 117 additions and 66 deletions
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  1. 148
      modules/highgui/src/window_QT.cpp
  2. 11
      modules/highgui/src/window_QT.h

148
modules/highgui/src/window_QT.cpp
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@ -418,6 +418,7 @@ CV_IMPL void cvShowImage( const char* name, const CvArr* arr )
//----------OBJECT----------------
GuiReceiver::GuiReceiver() : _bTimeOut(false)
@ -428,53 +429,53 @@ GuiReceiver::GuiReceiver() : _bTimeOut(false)
double GuiReceiver::getPropWindow(QString name)
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (!w)
return -1;
return -1;
return (double)w->flags;
return (double)w->flags;
}
void GuiReceiver::setPropWindow(QString name, double arg2 )
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (!w)
return;
return;
int flags = (int) arg2;
int flags = (int) arg2;
if (w->flags == flags)//nothing to do
return;
if (w->flags == flags)//nothing to do
return;
switch(flags)
{
case CV_WINDOW_NORMAL:
w->layout->setSizeConstraint(QLayout::SetMinAndMaxSize);
w->flags = flags;
break;
case CV_WINDOW_AUTOSIZE:
w->layout->setSizeConstraint(QLayout::SetFixedSize);
w->flags = flags;
break;
default:;
}
switch(flags)
{
case CV_WINDOW_NORMAL:
w->layout->setSizeConstraint(QLayout::SetMinAndMaxSize);
w->flags = flags;
break;
case CV_WINDOW_AUTOSIZE:
w->layout->setSizeConstraint(QLayout::SetFixedSize);
w->flags = flags;
break;
default:;
}
}
double GuiReceiver::isFullScreen(QString name)
{
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
QPointer<CvWindow> w = icvFindWindowByName( name.toLatin1().data() );
if (!w)
return -1;
return -1;
if (w->isFullScreen())
return CV_WINDOW_FULLSCREEN;
else
return CV_WINDOW_NORMAL;
if (w->isFullScreen())
return CV_WINDOW_FULLSCREEN;
else
return CV_WINDOW_NORMAL;
}
//accept CV_WINDOW_NORMAL or CV_WINDOW_FULLSCREEN
@ -485,11 +486,11 @@ void GuiReceiver::toggleFullScreen(QString name, double flags )
if (!w)
return;
if (w->isFullScreen() && flags == CV_WINDOW_NORMAL)
w->showNormal();
if (w->isFullScreen() && flags == CV_WINDOW_NORMAL)
w->showNormal();
if (!w->isFullScreen() && flags == CV_WINDOW_FULLSCREEN)
w->showFullScreen();
if (!w->isFullScreen() && flags == CV_WINDOW_FULLSCREEN)
w->showFullScreen();
}
@ -764,13 +765,6 @@ CvWindow::~CvWindow()
}
/*
void CvWindow::startNavigate()
{
cout<<"here"<<endl;
//myview->zoomIn();
}*/
void CvWindow::displayInfo(QString text,int delayms)
{
myview->startDisplayInfo(text, delayms);
@ -783,7 +777,7 @@ void CvWindow::updateImage(void* arr)
void CvWindow::setMouseCallBack(CvMouseCallback m, void* param)
{
myview->setMouseCallBack(m,param);
myview->setMouseCallBack(m,param);
}
void CvWindow::addSlider(QString name, int* value, int count,CvTrackbarCallback on_change)
@ -834,6 +828,7 @@ ViewPort::ViewPort(QWidget* arg, int arg2)
previousFactor = 1;
previousCenter = QPointF(0,0);
previousDelta = QPointF(0,0);
positionGrabbing = QPointF(0,0);
if (mode == CV_MODE_OPENGL)
{
@ -845,6 +840,11 @@ ViewPort::ViewPort(QWidget* arg, int arg2)
image2Draw=cvCreateImage(cvSize(centralWidget->width(),centralWidget->height()),IPL_DEPTH_8U,3);
cvZero(image2Draw);
setSceneRect(0,0,size().width(),size().height());
this->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
this->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
this->setInteractive(false);
}
ViewPort::~ViewPort()
@ -852,6 +852,7 @@ ViewPort::~ViewPort()
if (image2Draw)
cvReleaseImage(&image2Draw);
delete timerDisplay;
}
void ViewPort::startDisplayInfo(QString text, int delayms)
@ -896,16 +897,34 @@ void ViewPort::updateImage(void* arr)
void ViewPort::setMouseCallBack(CvMouseCallback m, void* param)
{
setMouseTracking (true);//receive mouse event everytime
setMouseTracking (true);//receive mouse event everytime
on_mouse = m;
on_mouse_param = param;
}
void ViewPort::controlImagePosition()
{
qreal left, top, right, bottom;
matrixWorld.map(0,0,&left,&top);
if (left < 0)left = 0;
if (top < 0)top = 0;
if (left>0 || top > 0)
matrixWorld.translate(-left,-top);
QSize sizeImage = size();
matrixWorld.map(sizeImage.width(),sizeImage.height(),&right,&bottom);
if (right > sizeImage.width()) right = sizeImage.width();
if (bottom > sizeImage.height()) bottom = sizeImage.height();
if (right < sizeImage.width() || bottom < sizeImage.height())
matrixWorld.translate(sizeImage.width()-right,sizeImage.height()-bottom);
}
void ViewPort::scaleView(qreal factor,QPointF center)
{
factor += previousFactor;
if (factor < 1 || factor > 100)
return;
{
factor += previousFactor;
if (factor < 1 || factor > 100)
return;
center= (center-previousCenter)/previousFactor + previousCenter;//move to global coordinate
QPointF delta = QPointF(center-center*factor);
@ -914,21 +933,23 @@ void ViewPort::scaleView(qreal factor,QPointF center)
matrixWorld.translate(delta.x(),delta.y());//newCenter.x(),newCenter.y());
matrixWorld.scale(factor,factor);
//controlImagePosition();
previousCenter = center;
previousDelta = delta;
//previousDelta = delta;
previousFactor = factor;
if (previousFactor>1)
setCursor(Qt::OpenHandCursor);
else
unsetCursor();
setCursor(Qt::OpenHandCursor);
else
unsetCursor();
viewport()->update();
}
void ViewPort::wheelEvent(QWheelEvent *event)
{
scaleView( -event->delta() / 480.0,event->pos());
scaleView( -event->delta() / 240.0,event->pos());
}
void ViewPort::mousePressEvent(QMouseEvent *event)
@ -979,7 +1000,10 @@ void ViewPort::mousePressEvent(QMouseEvent *event)
if (previousFactor>1)
setCursor(Qt::ClosedHandCursor);
{
setCursor(Qt::ClosedHandCursor);
positionGrabbing = event->pos();
}
QWidget::mousePressEvent(event);
}
@ -1032,7 +1056,7 @@ void ViewPort::mouseReleaseEvent(QMouseEvent *event)
on_mouse( cv_event, pt.x(), pt.y(), flags, on_mouse_param );
if (previousFactor>1)
setCursor(Qt::OpenHandCursor);
setCursor(Qt::OpenHandCursor);
QWidget::mouseReleaseEvent(event);
}
@ -1115,6 +1139,17 @@ void ViewPort::mouseMoveEvent(QMouseEvent *event)
if (on_mouse)
on_mouse( cv_event, pt.x(), pt.y(), flags, on_mouse_param );
if (previousFactor>1 && event->buttons() == Qt::LeftButton)
{
QPointF dxy = (pt - positionGrabbing)/previousFactor;
positionGrabbing = event->pos();
matrixWorld.translate(dxy.x(),dxy.y());
controlImagePosition();
}
QWidget::mouseMoveEvent(event);
}
@ -1183,6 +1218,18 @@ void ViewPort::drawInstructions(QPainter *painter)
}
#if defined(OPENCV_GL)//all this section -> not tested
void ViewPort::initGL()
@ -1246,3 +1293,4 @@ void ViewPort::draw3D()
#endif
#endif

11
modules/highgui/src/window_QT.h
Unescape View File

@ -172,15 +172,16 @@ public:
qreal scaleFactor;//for zoom int/out
public slots:
//reference:
//http://www.qtcentre.org/wiki/index.php?title=QGraphicsView:_Smooth_Panning_and_Zooming
//reference:
//http://www.qtcentre.org/wiki/index.php?title=QGraphicsView:_Smooth_Panning_and_Zooming
//http://doc.qt.nokia.com/4.6/gestures-imagegestures-imagewidget-cpp.html
void scaleView(qreal scaleFactor, QPointF center);
private:
QPointF previousCenter ;
QPointF previousCenter ;
qreal previousFactor;//for zoom int/out
QPointF previousDelta;
QPointF positionGrabbing;
CvMouseCallback on_mouse;
void* on_mouse_param;
@ -202,6 +203,8 @@ private:
void mouseDoubleClickEvent(QMouseEvent *event);
void drawInstructions(QPainter *painter);
void draw2D(QPainter *painter);
void controlImagePosition();
#if defined(OPENCV_GL)
void draw3D();

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