Implement mouse menus

Setup a menu/some menus by writing to an elements props/menus file

1 files changed, 112 insertions, 2 deletions

diff --git a/props.c b/props.c
index fecf9ef..df61782 100644
--- a/props.c
+++ b/props.c
@@ -109,6 +109,17 @@ deftext(int gtag, int ptag)
 	return v;
 }
 
+PropVal
+defmenus(int gtag, int ptag)
+{
+	USED(gtag);
+	USED(ptag);
+
+	PropVal v;
+	v.menus = emalloc(sizeof(MenuSpec));
+	return v;
+}
+
 char *
 printcolour(PropVal p)
 {
@@ -155,6 +166,36 @@ printtext(PropVal p)
 }
 
 char *
+printmenus(PropVal p)
+{
+	MenuSpec *spec = p.menus;
+
+	char which[3] = "LMR";
+	char *str = smprint("");
+	for(int i = 0; i < 3; i++){
+		if(spec->menus[i] == nil)
+			continue;
+
+		char sep = spec->seps[i];
+		char *tmp = str;
+		str = smprint("%s%c", tmp, which[i]);
+		free(tmp);
+
+		char **items = spec->menus[i]->item;
+		for(int j = 0; items[j] != nil; j++){
+			tmp = str;
+			str = smprint("%s%c%s", tmp, sep, items[j]);
+			free(tmp);
+		}
+
+		tmp = str;
+		str = smprint("%s\n", tmp);
+		free(tmp);
+	}
+	return str;
+}
+
+char *
 parsecolour(char *str, PropVal *p)
 {
 	char *r;
@@ -226,6 +267,74 @@ parsetext(char *str, PropVal *p)
 	return nil;
 }
 
+char *
+parsemenus(char *str, PropVal *p)
+{
+	char *err = nil;
+	int n = 0;
+	for(int i = 0; str[i] != 0; i++)
+		if(str[i] == '\n')
+			n++;
+
+	char **lines = emalloc(sizeof(char *) * (n+1));
+	n = getfields(str, lines, n, 1, "\n");
+
+	p->menus = emalloc(sizeof(MenuSpec));
+	MenuSpec *spec = p->menus;
+	for(int i = 0; i < n; i++){
+		char *line = lines[i];
+		if(strlen(line) == 0)
+			continue;
+
+		if(strlen(line) <= 2)
+			return Eparse;
+
+		int which;
+		switch(line[0]){
+		case 'L': which = 0; break;
+		case 'M': which = 1; break;
+		case 'R': which = 2; break;
+		default:
+			err = Eparse;
+			goto Lend;
+		}
+
+		if(spec->menus[which] == nil)
+			spec->menus[which] = emalloc(sizeof(Menu));
+
+		int count = 0;
+		char sep = line[1];
+		spec->seps[which] = sep;
+		spec->menus[which]->item = emalloc(sizeof(char *));
+
+		char *start = line+2;
+		char *end;
+		while(*start != 0){
+			count++;
+			spec->menus[which]->item = erealloc(spec->menus[which]->item, sizeof(char *) * count);
+			for(end = start; *end != 0 && *end != sep && *end != '\n'; end++);
+			int len = end-start;
+			char *buf = emalloc(len+1);
+			memcpy(buf, start, len);
+			buf[len] = 0;
+
+			spec->menus[which]->item[count-1] = buf;
+			start = end;
+			if(*start != 0){
+				do{
+					start++;
+				}while(*start == '\n');
+			}
+		}
+		spec->menus[which]->item[count] = nil;
+		print("count: %d\n", count);
+	}
+
+Lend:
+	free(lines);
+	return err;
+}
+
 PropVal
 getprop(GuiElement *g, int tag, int lock)
 {
@@ -239,7 +348,7 @@ getprop(GuiElement *g, int tag, int lock)
 		runlock(&g->lock);
 
 	if(v == nil)
-		sysfatal("invalid prop for this gui element");
+		sysfatal("invalid prop %d for this gui element", tag);
 	else
 		return *v;
 }
@@ -268,6 +377,7 @@ PropSpec propspecs[Pmax] = {
 	[Pbordercolour] = {"bordercolour",	defcolour,	printcolour,	parsecolour},
 	[Ptext] = {"text",	deftext,	printtext,	parsetext},
 	[Ptextcolour] = {"textcolour",	defcolour,	printcolour,	parsecolour},
+	[Pmenus] = {"menus",	defmenus,	printmenus,	parsemenus},
 };
 
-int baseprops[nbaseprops] = {Pbackground, Pborder, Pmargin, Ppadding, Pbordercolour};
\ No newline at end of file
+int baseprops[nbaseprops] = {Pbackground, Pborder, Pmargin, Ppadding, Pbordercolour, Pmenus};
\ No newline at end of file