mouse hovering now selects again

TODO: make this a lot faster, will require rewriting drawmenu
significantly

libs/event.c

@@ -2,6 +2,7 @@ void
 eventloop(void)
 {
 	XEvent ev;
+    int noimg = 0;
 
 	while (!XNextEvent(dpy, &ev)) {
 		if (XFilterEvent(&ev, win))
@@ -14,6 +15,11 @@ eventloop(void)
 			exit(1);
 		case ButtonPress:
 			buttonpress(&ev);
+            noimg = 0;
+			break;
+        case MotionNotify:
+            motionevent(&ev.xbutton);
+            noimg = 1;
             break;
 		case Expose:
 			if (ev.xexpose.count == 0)
@@ -39,7 +45,11 @@ eventloop(void)
 
         // redraw image on X11 event
         #if USEIMAGE
+        if (!noimg) {
             drawimage();
+        } else {
+            noimg = 0; // draw it next time
+        }
         #endif
 	}
 }

libs/mouse.c

@@ -1,3 +1,55 @@
+unsigned int
+textw_clamp(const char *str, unsigned int n)
+{
+	unsigned int w;
+    w = drw_fontset_getwidth_clamp(drw, str, n, True) + lrpad;
+
+	return MIN(w, n);
+}
+
+void
+motionevent(XButtonEvent *ev)
+{
+	struct item *item;
+	int xy, ev_xy;
+
+	if (ev->window != win || matches == 0)
+		return;
+
+    #if USEIMAGE
+        if (image) return;
+    #endif
+
+    int itemCount = 0;
+
+    // walk through all items
+    for (item = items; item && item->text; item++)
+        itemCount++;
+
+    // to prevent slowdown, arbritary limit of 50 items
+    if (itemCount > 50)
+        return;
+
+    int larrowWidth = 0;
+    int rarrowWidth = 0;
+
+    if (!hidelarrow) larrowWidth = pango_leftarrow ? TEXTWM(leftarrow) : TEXTW(leftarrow);
+    if (!hiderarrow) rarrowWidth = pango_rightarrow ? TEXTWM(rightarrow) : TEXTW(rightarrow);
+
+	xy = lines > 0 ? bh : inputw + promptw + larrowWidth;
+	ev_xy = lines > 0 ? ev->y : ev->x;
+	for (item = curr; item && item != next; item = item->right) {
+		int wh = lines > 0 ? bh : textw_clamp(item->text, mw - xy - rarrowWidth);
+		if (ev_xy >= xy && ev_xy < (xy + wh)) {
+			sel = item;
+			calcoffsets();
+			drawmenu();
+			break;
+		}
+		xy += wh;
+	}
+}
+
 void
 buttonpress(XEvent *e)
 {

libs/mouse.h

@@ -1 +1,3 @@
+static unsigned int textw_clamp(const char *str, unsigned int n);
+static void motionevent(XButtonEvent *ev);
 static void buttonpress(XEvent *e);

libs/sl/draw-pango.c

@@ -325,3 +325,12 @@ drw_cur_free(Drw *drw, Cur *cursor)
 	XFreeCursor(drw->dpy, cursor->cursor);
 	free(cursor);
 }
+
+unsigned int
+drw_fontset_getwidth_clamp(Drw *drw, const char *text, unsigned int n, Bool markup)
+{
+	unsigned int tmp = 0;
+	if (drw && drw->font && text && n)
+		tmp = drw_text(drw, 0, 0, 0, 0, 0, text, n, markup);
+	return MIN(n, tmp);
+}

libs/sl/draw-pango.h

@@ -35,6 +35,7 @@ void drw_free(Drw *drw);
 /* Fnt abstraction */
 Fnt *drw_font_create(Drw* drw, char *font[], size_t fontcount);
 void drw_font_free(Fnt* set);
+unsigned int drw_fontset_getwidth_clamp(Drw *drw, const char *text, unsigned int n, Bool markup);
 unsigned int drw_font_getwidth(Drw *drw, const char *text, Bool markup);
 void drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h, Bool markup);
 

libs/sl/draw-xft.c

@@ -463,3 +463,11 @@ drw_cur_free(Drw *drw, Cur *cursor)
 	free(cursor);
 }
 
+unsigned int
+drw_fontset_getwidth_clamp(Drw *drw, const char *text, unsigned int n, Bool markup)
+{
+	unsigned int tmp = 0;
+	if (drw && drw->font && text && n)
+		tmp = drw_text(drw, 0, 0, 0, 0, 0, text, n, markup);
+	return MIN(n, tmp);
+}

libs/sl/draw-xft.h

@@ -38,6 +38,7 @@ void drw_free(Drw *drw);
 Fnt *drw_font_create(Drw* drw, char *font[], size_t fontcount);
 void drw_font_free(Fnt* set);
 unsigned int drw_font_getwidth(Drw *drw, const char *text, Bool markup);
+unsigned int drw_fontset_getwidth_clamp(Drw *drw, const char *text, unsigned int n, Bool markup);
 void drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h, Bool markup);
 
 /* Colorscheme abstraction */