shithub: vdir

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handle mouse clicks on scrollbar

	scrollbar now reacts to mouse clicks like any standard 9 application.
	mouse 1 and 3 scroll up and down respectively with the scroll speed based
	on where the click occurs in the scrollbar (the lower the faster and vice versa)
	mouse 2 moves the scroll position to where the click occurs

--- a/vdir.c

+++ b/vdir.c

@@ -386,11 +386,23 @@

 void

 evtmouse(Mouse m)

 {

-	int n;

+	int n, dy;

 	Dir d;

 	char buf[256] = {0};

-	if(m.buttons&4){

+	if(m.buttons&1){

+		if(ptinrect(m.xy, scrollr)){

+			dy = 1+nlines*((double)(m.xy.y - scrollr.min.y)/Dy(scrollr));

+			scrollup(dy);

+		}

+	}else if(m.buttons&2){

+		if(ptinrect(m.xy, scrollr)){

+			if(nlines<ndirs){

+				offset = (m.xy.y - scrollr.min.y) * ndirs/Dy(scrollr);

+				redraw();

+			}

+		}

+	}if(m.buttons&4){

 		if(ptinrect(m.xy, homer)){

 			cd(nil);

 			redraw();

@@ -425,6 +437,9 @@

 				redraw();

 			}else

 				plumbfile(path, d.name);

+		}else if(ptinrect(m.xy, scrollr)){

+			dy = 1+nlines*((double)(m.xy.y - scrollr.min.y)/Dy(scrollr));

+			scrolldown(dy);

 		}

 	}else if(m.buttons&8)

 		scrollup(Slowscroll);