how to rotate the image and how to maintain image aspect ration while showing.

[kiransu123]

hi i m kiran
i wnt to display image and also maintain 1:1 aspect ratio but i trid the some part of image is not visible is there any way to maintain that

i hav written followng prog and nw i wnt to rotate the image
wht cn i do

i wnt to handle mouse event is there any way to do that



#include "qgl.h"
#include "qapplication.h"
#include "qimage.h"
class PaintWidget : public QGLWidget{
public:
PaintWidget(const QString &filename,QWidget *parent=0);
void paintGL();
void resizeGL(int w,int h);
protected:
QImage data,gldata;
float width,height;
};

PaintWidget::PaintWidget(const QString &filename,QWidget *parent):QGLWidget(parent){
data.load(filename);
resize(data.size());
}


void PaintWidget::paintGL(){
QImage half=data.copy(0,0,data.width()/2,data.height()/2);

gldata = QGLWidget::convertToGLFormat(half);
int xsize,ysize;
float xscale,yscale;
xsize=width;
ysize=gldata.height()*xsize / gldata.width();
if(ysize > height)
{
ysize=height;
xsize=gldata.width()*ysize / gldata.height();
}
xscale=(float)xsize /(float)gldata.width();
yscale=(float)ysize/(float)gldata.height();
glPixelZoom(xscale,yscale);

glDrawPixels(data.width(),data.height(),GL_RGBA,GL _UNSIGNED_BYTE,gldata.bits());
}

void PaintWidget::resizeGL(int w, int h){
glViewport(0,0,w,h);
width=w;
height=h;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0,w,0,h,-1,1);
glMatrixMode(GL_MODELVIEW);
}

int main(int argc, char** argv){
QApplication app(argc,argv);
PaintWidget pw(argv[1]);
pw.showFullScreen();
return app.exec();

}

[jacek]

i wnt to handle mouse event is there any way to do that
Just reimplement QWidget::mouseMoveEvent() (don't forget to turn the mouse tracking on).

[high_flyer]

@kiransu123:
I guess you are not using your nokia to write the posts here, so PLEASE, don't use that sms shorttext, its hard to read and anoying.
Please use regular text.

[wysota]

And don't start three threads on the same subject.