> Matthias Melcher schrieb:
> >
> > Use fl_transform_x() and fl_transform_y() to get the screen position for
> > the drawing. These function transform drawing coordinates into screen
> > coordinates. If you need to know the scale, use fl_transform_dx() and
> > fl_transform_dy().
>
> Oh, yes, that was the missing part of the puzzle ;-P
>
> And here it is:
>
> static void drawQuit(Fl_Color c) {
>
> static Fl_PNG_Image *i = 0;
> if (!i) i = new Fl_PNG_Image("icon.png");
>
> int x = (int)fl_transform_x(0,0) - i->w()/2;
> int y = (int)fl_transform_y(0,0) - i->h()/2;
>
> #if DRAW_BG
> fl_color(FL_WHITE); // bg color
> fl_rectf(x,y,i->w(),i->h()); // draw bg
> #endif
> i->draw(x,y); // draw image
> fl_color(c); // (re)set color
> }
>
> One thing to note is that the symbol's origin (0,0) is
> centered, thus the correction after fl_transform_*().
>
> Works nice. But can't rotate and scale the symbol, as all the
> other symbol drawings can do. ;-)
>
> Albrecht
Thank you all for your help :p. Another question though, what is use of
> #if DRAW_BG
> fl_color(FL_WHITE); // bg color
> fl_rectf(x,y,i->w(),i->h()); // draw bg
> #endif
There is no difference when removing it.
thanks
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