Darker's profile - activity

But I'm only trying to fit height. Width must be fit by user - correct button width must be defined, or the font overflows.

Thank you, I'd never have figured this out! :D

I have a button created in openCV and I need to fit a text in it. How do I compute the font scale if I want to fit it by width and I know the width of the box?

int font = CV_FONT_HERSHEY_COMPLEX_SMALL;  //defining font
double scale = ((float)(height-3))/20.0;   //So far, I just try to divide height by 20
Size textSize = getTextSize(value, font, scale, 1, &bottom);  //Geting text rect
Point textOrg((width - textSize.width)/2+x, (height + textSize.height)/2+y); //Computing point to center the text in the button
putText(*screen, value, textOrg, font, scale, Scalar(0,0,255), 1);//Printing txt in RED color

Now, I do simple height division, which works, but doesn't really make text fit - and in extreme cases (too small, to large box) the text either overflows or does not use desired 95% of boxes height.

I may just be googling wrong, but I cannot find out a way (read function) to change properties of camera in the new Open CV. I need to disable auto exposure and auto gain of the camera.
Is that even possible?

Off topic. Are you making fun of us man? This almost seems like some "like to be troll"...

I have written a very simple UI class for open CV (based on drawing buttons on OpenCV matrices), but it seems, that OpenCV has some sort of event handler bug:
When I click down, up and down second down click event is not captured, if I click too fast. However, if I click down, up, down and up though the second down remains ignored the second up event is captured, no matter how fast I try to click.
Debug output (1 = down, -1 = up):

Button: 1    //slow clicks
Button: -1
Button: 1
Button: -1
Button: 1
Button: -1
Button: 1
Button: -1
Button: 1   //started clicking fast
Button: -1
Button: -1
Button: 1
Button: -1
Button: -1
Button: 1
Button: -1
Button: -1
Button: 1

Because I already happened to be downvoted for posting questions without code, here is some code:

void Opencv_UI::event_process(int evt, int x, int y, int flags) 
{
    int button = 0;
    switch(evt) 
    {
        case CV_EVENT_LBUTTONDOWN : button=1; break;
        case CV_EVENT_LBUTTONUP : button=-1; break;
        case CV_EVENT_RBUTTONDOWN : button=3; break;
        case CV_EVENT_RBUTTONUP : button=-3; break;
    }
    if(button==1||button==-1)
      std::cout<<"Button: "<<button<<"\n";
        //Code below does not affect event performance, I tryed the script with all this commented out
    int button_count = buttons.size();
    for(int i=0; i<button_count; i++) //Informs buttons about mouse event
    {
        buttons[i]->mouse(x, y, button);
    }
    this->render();    //Renders buttons affected by click/mousemove
}