- if(pixel1 < -10) pixel1 = -10;
- if(pixel2 > pane->canvas->get_w() + 10)
- pixel2 = pane->canvas->get_w() + 10;
+ int xs10 = xS(10);
+ if(pixel1 < -xs10) pixel1 = -xs10;
+ if(pixel2 > pane->canvas->get_w() + xs10)
+ pixel2 = pane->canvas->get_w() + xs10;