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
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