Add a function to draw a simple menu onto a screen.

1 files changed, 39 insertions, 1 deletions

diff --git a/usr.bin/tmux/screen-write.c b/usr.bin/tmux/screen-write.c
index 5b0baf05a23..c4daa153703 100644
--- a/usr.bin/tmux/screen-write.c
+++ b/usr.bin/tmux/screen-write.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: screen-write.c,v 1.151 2019/04/18 11:07:28 nicm Exp $ */
+/* $OpenBSD: screen-write.c,v 1.152 2019/05/10 14:12:47 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -403,6 +403,44 @@ screen_write_vline(struct screen_write_ctx *ctx, u_int ny, int top, int bottom)
 	screen_write_set_cursor(ctx, cx, cy);
 }
 
+/* Draw a menu on screen. */
+void
+screen_write_menu(struct screen_write_ctx *ctx, struct menu *menu, int choice)
+{
+	struct screen		*s = ctx->s;
+	struct grid_cell	 gc;
+	u_int			 cx, cy, i, j;
+
+	cx = s->cx;
+	cy = s->cy;
+
+	memcpy(&gc, &grid_default_cell, sizeof gc);
+
+	screen_write_box(ctx, menu->width + 4, menu->count + 2);
+	screen_write_cursormove(ctx, cx + 2, cy, 0);
+	format_draw(ctx, &gc, menu->width, menu->title, NULL);
+
+	for (i = 0; i < menu->count; i++) {
+		if (menu->items[i].name == NULL) {
+			screen_write_cursormove(ctx, cx, cy + 1 + i, 0);
+			screen_write_hline(ctx, menu->width + 4, 1, 1);
+		} else {
+			if (choice >= 0 && i == (u_int)choice)
+				gc.attr |= GRID_ATTR_REVERSE;
+			screen_write_cursormove(ctx, cx + 2, cy + 1 + i, 0);
+			for (j = 0; j < menu->width; j++)
+				screen_write_putc(ctx, &gc, ' ');
+			screen_write_cursormove(ctx, cx + 2, cy + 1 + i, 0);
+			format_draw(ctx, &gc, menu->width, menu->items[i].name,
+			    NULL);
+			if (choice >= 0 && i == (u_int)choice)
+				gc.attr &= ~GRID_ATTR_REVERSE;
+		}
+	}
+
+	screen_write_set_cursor(ctx, cx, cy);
+}
+
 /* Draw a box on screen. */
 void
 screen_write_box(struct screen_write_ctx *ctx, u_int nx, u_int ny)