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

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This commit is contained in:
nicm
2019-05-10 14:12:47 +00:00
parent cb10bfb8ef
commit 004a9b52f0
2 changed files with 55 additions and 1 deletions
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38
screen-write.c
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@@ -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)