From 2293ed78636e5f66b5e2884bebd193803cb6939f Mon Sep 17 00:00:00 2001
From: rodri <rgl@antares-labs.eu>
Date: Fri, 22 Sep 2023 15:32:36 +0000
Subject: add parsecmd to the client. finish the menulist of matches.

the menulist now supports scrolling.
also changed some cursors and got to tidy up /^lmb\(.
---
 menulist.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 55 insertions(+), 13 deletions(-)

(limited to 'menulist.c')

diff --git a/menulist.c b/menulist.c
index 8cd41a8..52b5362 100644
--- a/menulist.c
+++ b/menulist.c
@@ -13,7 +13,7 @@ enum {
 	Menuborder = 2,
 	Vspace = 2,
 	Scrollwidth = 10,
-	Maxvisitems = 5,
+	Maxvisitems = 8,
 };
 static char none[] = "none";
 
@@ -31,7 +31,11 @@ menulist_add(Menulist *ml, int id, char *title)
 		ml->r.min.x = SCRW/2 - ew/2;
 		ml->r.max.x = ml->r.min.x + ew;
 	}
-	if(ml->nentries > 1)
+
+	if(ml->nentries > Maxvisitems){
+		ml->sr.min = subpt(ml->r.min, Pt(Scrollwidth+2*Menuborder,0));
+		ml->sr.max = Pt(ml->r.min.x-2*Menuborder, ml->r.max.y);
+	}else if(ml->nentries > 1)
 		ml->r.max.y += font->height+Vspace;
 }
 
@@ -55,16 +59,45 @@ menulist_clear(Menulist *ml)
 	ml->r.max = addpt(ml->r.min, Pt(w, font->height+Vspace));
 	ml->sr = ZR;
 	ml->high = -1;
+	ml->off = 0;
 }
 
-static void
-menulist_update(Menulist *ml, Mousectl *mc)
+static int
+menulist_update(Menulist *ml, Mousectl *mc, Channel *drawchan)
 {
-	if(ptinrect(mc->xy, ml->r)){
-		/* item highlighting and selection */
-	}else if(ptinrect(mc->xy, ml->sr)){
-		/* scrolling */
+	/* redundant from bts.c:/^mouse\(, but it's necessary to avoid overdrawing */
+	static Mouse oldm;
+	static ulong lastlmbms;
+	int selected;
+
+	selected = -1;
+	if(ptinrect(mc->xy, Rpt(ml->sr.min, ml->r.max))){
+		if(ptinrect(mc->xy, ml->r)){
+			/* item highlighting and selection */
+			ml->high = ml->off + (mc->xy.y - ml->r.min.y)/(font->height+Vspace);
+			if(oldm.buttons != mc->buttons && mc->buttons == 1){
+				if(mc->msec-lastlmbms < 500)
+					selected = ml->high;
+				else
+					lastlmbms = mc->msec;
+			}
+		}
+		if(mc->buttons != oldm.buttons && ml->nentries > Maxvisitems)
+			/* scrolling */
+			switch(mc->buttons){
+			case 1: if(!ptinrect(mc->xy, ml->sr)) break;
+			case 8:
+				ml->off = max(0, ml->off - (mc->xy.y - ml->sr.min.y)/(font->height+Vspace));
+				break;
+			case 4: if(!ptinrect(mc->xy, ml->sr)) break;
+			case 16:
+				ml->off = min(ml->off + (mc->xy.y - ml->sr.min.y)/(font->height+Vspace), ml->nentries-Maxvisitems);
+				break;
+			}
 	}
+	nbsendp(drawchan, nil);
+	oldm = mc->Mouse;
+	return selected;
 }
 
 static void
@@ -72,7 +105,7 @@ menulist_draw(Menulist *ml, Image *dst)
 {
 	static Image *bc;
 	Rectangle tr, er; /* title and per-entry */
-	int i;
+	int i, width;
 
 	if(ml->filling)
 		return;
@@ -81,18 +114,20 @@ menulist_draw(Menulist *ml, Image *dst)
 		bc = eallocimage(display, Rect(0,0,1,1), screen->chan, 1, DPurpleblue);
 
 	/* draw title */
+	width = stringwidth(font, ml->title);
 	tr.min = subpt(ml->r.min, Pt(0,Menuborder + font->height+Vspace));
 	tr.max = Pt(ml->r.max.x, ml->r.min.y - Menuborder);
 	draw(dst, tr, display->black, nil, ZP);
-	string(dst, tr.min, display->white, ZP, font, ml->title);
+	string(dst, addpt(tr.min, Pt(Dx(tr)/2 - width/2,0)), display->white, ZP, font, ml->title);
 
 	/* draw content */
 	border(dst, ml->r, -Menuborder, bc, ZP);
 	er.min = ml->r.min;
 	er.max = Pt(ml->r.max.x, er.min.y + font->height+Vspace);
-	for(i = 0; i < ml->nentries; i++){
-		draw(dst, er, display->white, nil, ZP);
-		string(dst, er.min, display->black, ZP, font, ml->entries[i].title);
+	for(i = ml->off; i < ml->nentries && er.min.y < ml->r.max.y; i++){
+		width = stringwidth(font, ml->entries[i].title);
+		draw(dst, er, i == ml->high? display->black: display->white, nil, ZP);
+		string(dst, addpt(er.min, Pt(Dx(er)/2 - width/2,0)), i == ml->high? display->white: display->black, ZP, font, ml->entries[i].title);
 		er.min.y += font->height+Vspace;
 		er.max.y = er.min.y + font->height+Vspace;
 	}
@@ -100,6 +135,13 @@ menulist_draw(Menulist *ml, Image *dst)
 		draw(dst, er, display->white, nil, ZP);
 		string(dst, er.min, display->black, ZP, font, none);
 	}
+
+	/* draw scroll */
+	if(ml->nentries > Maxvisitems){
+		border(dst, ml->sr, -Menuborder, bc, ZP);
+		draw(dst, ml->sr, display->black, nil, ZP);
+		draw(dst, Rpt(addpt(ml->sr.min, Pt(0,ml->off*Dy(ml->sr)/ml->nentries)), Pt(ml->sr.max.x,ml->sr.min.y + (ml->off+Maxvisitems)*Dy(ml->sr)/ml->nentries)), display->white, nil, ZP);
+	}
 }
 
 Menulist *
-- 
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