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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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141
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)
@@ -990,6 +992,7 @@ ViewPort::ViewPort(CvWindow* arg, int arg2, int arg3)
#endif
image2Draw_ipl=cvCreateImage(cvSize(centralWidget->width(),centralWidget->height()),IPL_DEPTH_8U,3);
nbChannelOriginImage = 0;
cvZero(image2Draw_ipl);
setInteractive(false);
@@ -1093,9 +1096,7 @@ void ViewPort::updateImage(void* arr)
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());
nbChannelOriginImage = tempImage->nChannels;
updateGeometry();
}
@@ -1163,12 +1164,18 @@ 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;
if (matrixWorld.m11()*factor<1)
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);
@@ -1311,8 +1318,8 @@ 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 );
@@ -1333,8 +1340,10 @@ 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
{
@@ -1358,7 +1367,6 @@ void ViewPort::resizeEvent ( QResizeEvent *event)
return QGraphicsView::resizeEvent(event);
}
void ViewPort::paintEvent(QPaintEvent* event)
{
QPainter myPainter(viewport());
@@ -1379,17 +1387,18 @@ void ViewPort::paintEvent(QPaintEvent* event)
//in mode zoom/panning
if (matrixWorld.m11()>1)
{
//if (size()>QSize())
myPainter.setWorldMatrixEnabled (false );
drawOverview(&myPainter);
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();
}
//for information overlay
if (drawInfo)
@@ -1404,14 +1413,24 @@ void ViewPort::paintEvent(QPaintEvent* 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());
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())+
@@ -1419,23 +1438,107 @@ void ViewPort::drawStatusBar()
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,

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();