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New functions with QT GUI:

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- imgregion (as with Matlab) implemented
This commit is contained in:
Yannick Verdie 2010-06-28 21:01:37 +00:00
parent 69adf86afe
commit f8c83340b2
2 changed files with 277 additions and 172 deletions
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445
modules/highgui/src/window_QT.cpp
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@ -51,6 +51,8 @@ static bool multiThreads = false;
static int last_key = -1;
QWaitCondition key_pressed;
QMutex mutexKey;
static const unsigned int threshold_zoom_img_region = 15;//the minimum zoom value to start displaying the values' grid
//end static and global
double cvGetRatioWindow_QT(const char* name)
@ -966,10 +968,10 @@ ViewPort::ViewPort(CvWindow* arg, int arg2, int arg3)
centralWidget = arg,
mode = arg2;
keepRatio = arg3;
setupViewport(centralWidget);
setContentsMargins(0,0,0,0);
setObjectName(QString::fromUtf8("graphicsView"));
timerDisplay = new QTimer(this);
timerDisplay->setSingleShot(true);
@ -979,19 +981,20 @@ ViewPort::ViewPort(CvWindow* arg, int arg2, int arg3)
positionCorners = QRect(0,0,size().width(),size().height());
on_mouse = NULL;
mouseCoordinate = QPoint(-1,-1);
#if defined(OPENCV_GL)
if (mode == CV_MODE_OPENGL)
{
setViewport(new QGLWidget(QGLFormat(QGL::SampleBuffers)));
initGL();
setViewport(new QGLWidget(QGLFormat(QGL::SampleBuffers)));
initGL();
}
#endif
image2Draw_ipl=cvCreateImage(cvSize(centralWidget->width(),centralWidget->height()),IPL_DEPTH_8U,3);
nbChannelOriginImage = 0;
cvZero(image2Draw_ipl);
setInteractive(false);
setMouseTracking (true);//receive mouse event everytime
}
@ -999,21 +1002,21 @@ ViewPort::ViewPort(CvWindow* arg, int arg2, int arg3)
ViewPort::~ViewPort()
{
if (image2Draw_ipl)
cvReleaseImage(&image2Draw_ipl);
cvReleaseImage(&image2Draw_ipl);
delete timerDisplay;
}
void ViewPort::setRatio(int flags)
{
keepRatio = flags;
keepRatio = flags;
updateGeometry();
viewport()->update();
}
int ViewPort::getRatio()
{
return keepRatio;
return keepRatio;
}
void ViewPort::resetZoom()
@ -1063,8 +1066,8 @@ void ViewPort::siftWindowOnDown()
void ViewPort::startDisplayInfo(QString text, int delayms)
{
if (timerDisplay->isActive())
stopDisplayInfo();
stopDisplayInfo();
infoText = text;
timerDisplay->start(delayms);
drawInfo = true;
@ -1084,23 +1087,21 @@ inline bool ViewPort::isSameSize(IplImage* img1,IplImage* img2)
void ViewPort::updateImage(void* arr)
{
if (!arr)
CV_Error(CV_StsNullPtr, "NULL arr pointer (in showImage)" );
CV_Error(CV_StsNullPtr, "NULL arr pointer (in showImage)" );
IplImage* tempImage = (IplImage*)arr;
if (!isSameSize(image2Draw_ipl,tempImage))
{
cvReleaseImage(&image2Draw_ipl);
image2Draw_ipl=cvCreateImage(cvGetSize(tempImage),IPL_DEPTH_8U,3);
ratioX=float(image2Draw_ipl->width)/float(width());
ratioY=float(image2Draw_ipl->height)/float(height());
updateGeometry();
cvReleaseImage(&image2Draw_ipl);
image2Draw_ipl=cvCreateImage(cvGetSize(tempImage),IPL_DEPTH_8U,3);
nbChannelOriginImage = tempImage->nChannels;
updateGeometry();
}
cvConvertImage(tempImage,image2Draw_ipl,CV_CVTIMG_SWAP_RB );
viewport()->update();
}
@ -1113,41 +1114,41 @@ void ViewPort::setMouseCallBack(CvMouseCallback m, void* param)
void ViewPort::controlImagePosition()
{
qreal left, top, right, bottom;
//after check top-left, bottom right corner to avoid getting "out" during zoom/panning
matrixWorld.map(0,0,&left,&top);
if (left > 0)
{
matrixWorld.translate(-left,0);
left = 0;
matrixWorld.translate(-left,0);
left = 0;
}
if (top > 0)
{
matrixWorld.translate(0,-top);
top = 0;
matrixWorld.translate(0,-top);
top = 0;
}
//-------
QSize sizeImage = size();
matrixWorld.map(sizeImage.width(),sizeImage.height(),&right,&bottom);
if (right < sizeImage.width())
{
matrixWorld.translate(sizeImage.width()-right,0);
right = sizeImage.width();
matrixWorld.translate(sizeImage.width()-right,0);
right = sizeImage.width();
}
if (bottom < sizeImage.height())
{
matrixWorld.translate(0,sizeImage.height()-bottom);
bottom = sizeImage.height();
matrixWorld.translate(0,sizeImage.height()-bottom);
bottom = sizeImage.height();
}
//save corner position
positionCorners.setTopLeft(QPoint(left,top));
positionCorners.setBottomRight(QPoint(right,bottom));
//save also the inv matrix
matrixWorld_inv = matrixWorld.inverted();
viewport()->update();
}
@ -1162,29 +1163,35 @@ void ViewPort::scaleView(qreal factor,QPointF center)
{
factor/=5;//-0.1 <-> 0.1
factor+=1;//0.9 <-> 1.1
//limit zoom out ---
if (matrixWorld.m11()==1 && factor < 1)
return;
return;
if (matrixWorld.m11()*factor<1)
factor = 1/matrixWorld.m11();
factor = 1/matrixWorld.m11();
//limit zoom int ---
if (matrixWorld.m11()>100 && factor > 1)
return;
//inverse the transform
int a, b;
matrixWorld_inv.map(center.x(),center.y(),&a,&b);
matrixWorld.translate(a-factor*a,b-factor*b);
matrixWorld.scale(factor,factor);
controlImagePosition();
//display new zoom
centralWidget->displayStatusBar(tr("Zoom: %1%").arg(matrixWorld.m11()*100),1000);
if (matrixWorld.m11()>1)
setCursor(Qt::OpenHandCursor);
setCursor(Qt::OpenHandCursor);
else
unsetCursor();
unsetCursor();
}
void ViewPort::wheelEvent(QWheelEvent *event)
@ -1196,33 +1203,33 @@ void ViewPort::mousePressEvent(QMouseEvent *event)
{
int cv_event = -1, flags = 0;
QPoint pt = event->pos();
//icvmouseHandler: pass parameters for cv_event, flags
icvmouseHandler(event, mouse_down, cv_event, flags);
icvmouseProcessing(QPointF(pt), cv_event, flags);
if (matrixWorld.m11()>1)
{
setCursor(Qt::ClosedHandCursor);
positionGrabbing = event->pos();
setCursor(Qt::ClosedHandCursor);
positionGrabbing = event->pos();
}
QWidget::mousePressEvent(event);
}
void ViewPort::mouseReleaseEvent(QMouseEvent *event)
{
int cv_event = -1, flags = 0;
QPoint pt = event->pos();
//icvmouseHandler: pass parameters for cv_event, flags
icvmouseHandler(event, mouse_up, cv_event, flags);
icvmouseProcessing(QPointF(pt), cv_event, flags);
if (matrixWorld.m11()>1)
setCursor(Qt::OpenHandCursor);
setCursor(Qt::OpenHandCursor);
QWidget::mouseReleaseEvent(event);
}
@ -1230,11 +1237,11 @@ void ViewPort::mouseDoubleClickEvent(QMouseEvent *event)
{
int cv_event = -1, flags = 0;
QPoint pt = event->pos();
//icvmouseHandler: pass parameters for cv_event, flags
icvmouseHandler(event, mouse_dbclick, cv_event, flags);
icvmouseProcessing(QPointF(pt), cv_event, flags);
QWidget::mouseDoubleClickEvent(event);
}
@ -1242,32 +1249,32 @@ void ViewPort::mouseMoveEvent(QMouseEvent *event)
{
int cv_event = -1, flags = 0;
QPoint pt = event->pos();
//icvmouseHandler: pass parameters for cv_event, flags
icvmouseHandler(event, mouse_move, cv_event, flags);
icvmouseProcessing(QPointF(pt), cv_event, flags);
if (matrixWorld.m11()>1 && event->buttons() == Qt::LeftButton)
{
QPointF dxy = (pt - positionGrabbing)/matrixWorld.m11();
positionGrabbing = event->pos();
moveView(dxy);
QPointF dxy = (pt - positionGrabbing)/matrixWorld.m11();
positionGrabbing = event->pos();
moveView(dxy);
}
//I update the statusbar here because if the user does a cvWaitkey(0) (like with inpaint.cpp)
//the status bar will only be repaint when a click occurs.
viewport()->update();
QWidget::mouseMoveEvent(event);
}
//up, down, dclick, move
void ViewPort::icvmouseHandler(QMouseEvent *event, type_mouse_event category, int &cv_event, int &flags)
{
switch(event->modifiers())
{
case Qt::ShiftModifier:
@ -1287,7 +1294,7 @@ void ViewPort::icvmouseHandler(QMouseEvent *event, type_mouse_event category, in
break;
default:;
}
switch(event->button())
{
case Qt::LeftButton:
@ -1311,155 +1318,251 @@ void ViewPort::icvmouseProcessing(QPointF pt, int cv_event, int flags)
//to convert mouse coordinate
qreal pfx, pfy;
matrixWorld_inv.map(pt.x(),pt.y(),&pfx,&pfy);
mouseCoordinate.rx()=floor(pfx*ratioX);
mouseCoordinate.ry()=floor(pfy*ratioY);
mouseCoordinate.rx()=floor(pfx);
mouseCoordinate.ry()=floor(pfy);
if (on_mouse)
on_mouse( cv_event, mouseCoordinate.x(),mouseCoordinate.y(), flags, on_mouse_param );
}
QSize ViewPort::sizeHint() const
{
if(image2Draw_ipl)
{
return QSize(image2Draw_ipl->width,image2Draw_ipl->height);
return QSize(image2Draw_ipl->width,image2Draw_ipl->height);
} else {
return QGraphicsView::sizeHint();
return QGraphicsView::sizeHint();
}
}
void ViewPort::resizeEvent ( QResizeEvent *event)
{
controlImagePosition();
ratioX=float(image2Draw_ipl->width)/float(width());
ratioY=float(image2Draw_ipl->height)/float(height());
//ratioX=float(image2Draw_ipl->width)/float(width());
//ratioY=float(image2Draw_ipl->height)/float(height());
ratioX=width()/float(image2Draw_ipl->width);
ratioY=height()/float(image2Draw_ipl->height);
if(keepRatio == CV_WINDOW_KEEPRATIO)//to keep the same aspect ratio
{
QSize newSize = QSize(image2Draw_ipl->width,image2Draw_ipl->height);
newSize.scale(event->size(),Qt::KeepAspectRatio);
QSize newSize = QSize(image2Draw_ipl->width,image2Draw_ipl->height);
newSize.scale(event->size(),Qt::KeepAspectRatio);
//imageWidth/imageHeight = newWidth/newHeight +/- epsilon
//ratioX = ratioY +/- epsilon
//||ratioX - ratioY|| = epsilon
if (fabs(ratioX - ratioY)*100> ratioX)//avoid infinity loop / epsilon = 1% of ratioX
{
resize(newSize);
//move to the middle
//newSize get the delta offset to place the picture in the middle of its parent
newSize= (event->size()-newSize)/2;
move(newSize.width(),newSize.height());
}
//imageWidth/imageHeight = newWidth/newHeight +/- epsilon
//ratioX = ratioY +/- epsilon
//||ratioX - ratioY|| = epsilon
if (fabs(ratioX - ratioY)*100> ratioX)//avoid infinity loop / epsilon = 1% of ratioX
{
resize(newSize);
//move to the middle
//newSize get the delta offset to place the picture in the middle of its parent
newSize= (event->size()-newSize)/2;
move(newSize.width(),newSize.height());
}
}
return QGraphicsView::resizeEvent(event);
}
void ViewPort::paintEvent(QPaintEvent* event)
{
QPainter myPainter(viewport());
myPainter.setWorldTransform(matrixWorld);
draw2D(&myPainter);
#if defined(OPENCV_GL)
if (mode == CV_MODE_OPENGL && false)//disable it for now
{
setGL(this->width(),this->height());
draw3D();
unsetGL();
setGL(this->width(),this->height());
draw3D();
unsetGL();
}
#endif
//in mode zoom/panning
if (matrixWorld.m11()>1)
{
//if (size()>QSize())
myPainter.setWorldMatrixEnabled (false );
drawOverview(&myPainter);
myPainter.setWorldMatrixEnabled (false );
if (matrixWorld.m11()>=threshold_zoom_img_region)
drawImgRegion(&myPainter);
drawViewOverview(&myPainter);
}
//for statusbar
if (mouseCoordinate.x()>=0 && mouseCoordinate.y()>=0 &&
mouseCoordinate.x()<image2Draw_ipl->width && mouseCoordinate.y()<image2Draw_ipl->height)
{
drawStatusBar();
}
drawStatusBar();
//for information overlay
if (drawInfo)
{
myPainter.setWorldMatrixEnabled (false );
drawInstructions(&myPainter);
myPainter.setWorldMatrixEnabled (false );
drawInstructions(&myPainter);
}
QGraphicsView::paintEvent(event);
}
void ViewPort::draw2D(QPainter *painter)
{
image2Draw_qt = QImage((uchar*) image2Draw_ipl->imageData, image2Draw_ipl->width, image2Draw_ipl->height,QImage::Format_RGB888);
// painter->drawImage(0,0,image2Draw_qt.scaled(this->width(),this->height(),Qt::KeepAspectRatio));
painter->drawImage(0,0,image2Draw_qt.scaled(this->width(),this->height(),Qt::IgnoreAspectRatio,Qt::SmoothTransformation));
}
void ViewPort::drawStatusBar()
{
//centralWidget->myBar_msg->setMaximumWidth(width());
//CvScalar value = cvGet2D(image2Draw_ipl,mouseCoordinate.y(),mouseCoordinate.x());
QRgb rgbValue = image2Draw_qt.pixel(mouseCoordinate);
centralWidget->myBar_msg->setText(tr("<font color='black'>Coordinate: %1x%2 ~ </font>")
.arg(mouseCoordinate.x())
.arg(mouseCoordinate.y())+
tr("<font color='red'>R:%3 </font>").arg(qRed(rgbValue))+//.arg(value.val[0])+
tr("<font color='green'>G:%4 </font>").arg(qGreen(rgbValue))+//.arg(value.val[1])+
tr("<font color='blue'>B:%5</font>").arg(qBlue(rgbValue))//.arg(value.val[2])
);
if (mouseCoordinate.x()>=0 &&
mouseCoordinate.y()>=0 &&
mouseCoordinate.x()<image2Draw_ipl->width &&
mouseCoordinate.y()<image2Draw_ipl->height)
{
QRgb rgbValue = image2Draw_qt.pixel(mouseCoordinate);
if (nbChannelOriginImage==3)
{
centralWidget->myBar_msg->setText(tr("<font color='black'>Coordinate: %1x%2 ~ </font>")
.arg(mouseCoordinate.x())
.arg(mouseCoordinate.y())+
tr("<font color='red'>R:%3 </font>").arg(qRed(rgbValue))+//.arg(value.val[0])+
tr("<font color='green'>G:%4 </font>").arg(qGreen(rgbValue))+//.arg(value.val[1])+
tr("<font color='blue'>B:%5</font>").arg(qBlue(rgbValue))//.arg(value.val[2])
);
}else{
//all the channel have the same value (because of cvconvertimage), so only the r channel is dsplayed
centralWidget->myBar_msg->setText(tr("<font color='black'>Coordinate: %1x%2 ~ </font>")
.arg(mouseCoordinate.x())
.arg(mouseCoordinate.y())+
tr("<font color='grey'>grey:%3 </font>").arg(qRed(rgbValue))
);
}
}
}
void ViewPort::drawOverview(QPainter *painter)
void ViewPort::drawImgRegion(QPainter *painter)
{
qreal offsetX = matrixWorld.dx()/matrixWorld.m11();
offsetX = offsetX - floor(offsetX);
qreal offsetY = matrixWorld.dy()/matrixWorld.m11();
offsetY = offsetY - floor(offsetY);
QSize view = size();
QVarLengthArray<QLineF, 30> linesX;
for (qreal x = offsetX*matrixWorld.m11(); x < view.width(); x += matrixWorld.m11() )
linesX.append(QLineF(x, 0, x, view.height()));
QVarLengthArray<QLineF, 30> linesY;
for (qreal y = offsetY*matrixWorld.m11(); y < view.height(); y += matrixWorld.m11() )
linesY.append(QLineF(0, y, view.width(), y));
QFont f = painter->font();
f.setPointSize(threshold_zoom_img_region/3+(matrixWorld.m11()-threshold_zoom_img_region)/6);
//f.setStretch(0);
painter->setFont(f);
QString val;
QRgb rgbValue;
QPointF point1;//sorry, I do not know how to name it
QPointF point2;//idem
for (int j=-1;j<view.height()/matrixWorld.m11();j++)
for (int i=-1;i<view.width()/matrixWorld.m11();i++)
{
point1.setX((i+offsetX)*matrixWorld.m11());
point1.setY((j+offsetY)*matrixWorld.m11());
matrixWorld_inv.map(point1.x(),point1.y(),&point2.rx(),&point2.ry());
if (point2.x() >= 0 && point2.y() >= 0)
rgbValue = image2Draw_qt.pixel(QPoint(point2.x(),point2.y()));
else
rgbValue = qRgb(0,0,0);
const int margin = 1;
if (nbChannelOriginImage==3)
{
val = tr("%1").arg(qRed(rgbValue));
painter->setPen(QPen(Qt::red, 1));
painter->drawText(QRect(point1.x(),point1.y()+margin,matrixWorld.m11(),matrixWorld.m11()/3),
Qt::AlignCenter, val);
val = tr("%1").arg(qGreen(rgbValue));
painter->setPen(QPen(Qt::green, 1));
painter->drawText(QRect(point1.x(),point1.y()+matrixWorld.m11()/3+margin,matrixWorld.m11(),matrixWorld.m11()/3),
Qt::AlignCenter, val);
val = tr("%1").arg(qBlue(rgbValue));
painter->setPen(QPen(Qt::blue, 1));
painter->drawText(QRect(point1.x(),point1.y()+2*matrixWorld.m11()/3+margin,matrixWorld.m11(),matrixWorld.m11()/3),
Qt::AlignCenter, val);
}
else
{
val = tr("%1").arg(qRed(rgbValue));
painter->drawText(QRect(point1.x(),point1.y(),matrixWorld.m11(),matrixWorld.m11()),
Qt::AlignCenter, val);
}
}
painter->setPen(QPen(Qt::black, 1));
painter->drawLines(linesX.data(), linesX.size());
painter->drawLines(linesY.data(), linesY.size());
}
void ViewPort::drawViewOverview(QPainter *painter)
{
QSize viewSize = size();
viewSize.scale ( 100, 100,Qt::KeepAspectRatio );
const int margin = 5;
//draw the image's location
painter->setBrush(QColor(0, 0, 0, 127));
painter->setPen(Qt::darkGreen);
painter->drawRect(QRect(width()-viewSize.width()-margin, 0,viewSize.width(),viewSize.height()));
//daw the view's location inside the image
qreal ratioSize = 1/matrixWorld.m11();
qreal ratioWindow = (qreal)(viewSize.height())/(qreal)(size().height());
painter->setPen(Qt::darkBlue);
painter->drawRect(QRectF(width()-viewSize.width()-positionCorners.left()*ratioSize*ratioWindow-margin,
-positionCorners.top()*ratioSize*ratioWindow,
(viewSize.width()-1)*ratioSize,
(viewSize.height()-1)*ratioSize)
);
-positionCorners.top()*ratioSize*ratioWindow,
(viewSize.width()-1)*ratioSize,
(viewSize.height()-1)*ratioSize)
);
}
void ViewPort::drawInstructions(QPainter *painter)
{
QFontMetrics metrics = QFontMetrics(font());
int border = qMax(4, metrics.leading());
QRect rect = metrics.boundingRect(0, 0, width() - 2*border, int(height()*0.125),
Qt::AlignCenter | Qt::TextWordWrap, infoText);
Qt::AlignCenter | Qt::TextWordWrap, infoText);
painter->setRenderHint(QPainter::TextAntialiasing);
painter->fillRect(QRect(0, 0, width(), rect.height() + 2*border),
QColor(0, 0, 0, 127));
QColor(0, 0, 0, 127));
painter->setPen(Qt::white);
painter->fillRect(QRect(0, 0, width(), rect.height() + 2*border),
QColor(0, 0, 0, 127));
QColor(0, 0, 0, 127));
painter->drawText((width() - rect.width())/2, border,
rect.width(), rect.height(),
Qt::AlignCenter | Qt::TextWordWrap, infoText);
rect.width(), rect.height(),
Qt::AlignCenter | Qt::TextWordWrap, infoText);
}
@ -1490,15 +1593,15 @@ void ViewPort::initGL()
//do not want to link glu
void ViewPort::icvgluPerspective(GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar)
{
GLdouble xmin, xmax, ymin, ymax;
ymax = zNear * tan(fovy * M_PI / 360.0);
ymin = -ymax;
xmin = ymin * aspect;
xmax = ymax * aspect;
glFrustum(xmin, xmax, ymin, ymax, zNear, zFar);
GLdouble xmin, xmax, ymin, ymax;
ymax = zNear * tan(fovy * M_PI / 360.0);
ymin = -ymax;
xmin = ymin * aspect;
xmax = ymax * aspect;
glFrustum(xmin, xmax, ymin, ymax, zNear, zFar);
}
@ -1524,31 +1627,31 @@ void ViewPort::draw3D()
{
//draw scene here
glLoadIdentity();
glTranslated(0.0, 0.0, -1.0);
// QVector3D p = convert(positionMouse);
//glTranslated(p.x(),p.y(),p.z());
glRotatef( 55, 1, 0, 0 );
glRotatef( 45, 0, 1, 0 );
glRotatef( 0, 0, 0, 1 );
static const int coords[6][4][3] = {
{ { +1, -1, -1 }, { -1, -1, -1 }, { -1, +1, -1 }, { +1, +1, -1 } },
{ { +1, +1, -1 }, { -1, +1, -1 }, { -1, +1, +1 }, { +1, +1, +1 } },
{ { +1, -1, +1 }, { +1, -1, -1 }, { +1, +1, -1 }, { +1, +1, +1 } },
{ { -1, -1, -1 }, { -1, -1, +1 }, { -1, +1, +1 }, { -1, +1, -1 } },
{ { +1, -1, +1 }, { -1, -1, +1 }, { -1, -1, -1 }, { +1, -1, -1 } },
{ { -1, -1, +1 }, { +1, -1, +1 }, { +1, +1, +1 }, { -1, +1, +1 } }
{ { +1, -1, -1 }, { -1, -1, -1 }, { -1, +1, -1 }, { +1, +1, -1 } },
{ { +1, +1, -1 }, { -1, +1, -1 }, { -1, +1, +1 }, { +1, +1, +1 } },
{ { +1, -1, +1 }, { +1, -1, -1 }, { +1, +1, -1 }, { +1, +1, +1 } },
{ { -1, -1, -1 }, { -1, -1, +1 }, { -1, +1, +1 }, { -1, +1, -1 } },
{ { +1, -1, +1 }, { -1, -1, +1 }, { -1, -1, -1 }, { +1, -1, -1 } },
{ { -1, -1, +1 }, { +1, -1, +1 }, { +1, +1, +1 }, { -1, +1, +1 } }
};
for (int i = 0; i < 6; ++i) {
glColor3ub( i*20, 100+i*10, i*42 );
glBegin(GL_QUADS);
for (int j = 0; j < 4; ++j) {
glVertex3d(0.2 * coords[i][j][0], 0.2 * coords[i][j][1], 0.2 * coords[i][j][2]);
}
glEnd();
glColor3ub( i*20, 100+i*10, i*42 );
glBegin(GL_QUADS);
for (int j = 0; j < 4; ++j) {
glVertex3d(0.2 * coords[i][j][0], 0.2 * coords[i][j][1], 0.2 * coords[i][j][2]);
}
glEnd();
}
}
#endif

4
modules/highgui/src/window_QT.h
View File

@ -197,6 +197,7 @@ public:
IplImage* image2Draw_ipl;
QImage image2Draw_qt;
int nbChannelOriginImage;
void setRatio(int flags);
int getRatio();
@ -247,7 +248,8 @@ private:
void mouseReleaseEvent(QMouseEvent *event);
void mouseDoubleClickEvent(QMouseEvent *event);
void drawInstructions(QPainter *painter);
void drawOverview(QPainter *painter);
void drawViewOverview(QPainter *painter);
void drawImgRegion(QPainter *painter);
void draw2D(QPainter *painter);
void drawStatusBar();
void controlImagePosition();