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//! Hikari Menu Renderer
const display = @import("../display/display.zig");
const theme_mod = @import("theme.zig");
pub const MenuItem = struct {
label: []const u8,
description: []const u8,
enabled: bool,
};
pub const Renderer = struct {
fb: *display.Framebuffer,
text: *display.TextRenderer,
theme: theme_mod.Theme,
menu_x: u32,
menu_y: u32,
menu_width: u32,
visible_items: u32,
pub fn initialize(
fb: *display.Framebuffer,
text_renderer: *display.TextRenderer,
theme: theme_mod.Theme,
) Renderer {
const char_width = text_renderer.font.width;
const char_height = text_renderer.font.height;
const menu_width = 60;
const menu_x = (text_renderer.columns - menu_width) / 2;
const menu_y: u32 = 4;
const visible_items = text_renderer.rows - 10;
_ = char_width;
_ = char_height;
return Renderer{
.fb = fb,
.text = text_renderer,
.theme = theme,
.menu_x = menu_x,
.menu_y = menu_y,
.menu_width = menu_width,
.visible_items = visible_items,
};
}
pub fn draw_background(self: *Renderer) void {
self.fb.clear(self.theme.background);
}
pub fn draw_title(self: *Renderer, title: []const u8) void {
self.text.set_colors(self.theme.title_fg, self.theme.background);
const title_x = (self.text.columns - @as(u32, @intCast(title.len))) / 2;
self.text.set_cursor(title_x, 1);
self.text.print(title);
self.text.set_cursor(self.menu_x, 2);
var i: u32 = 0;
while (i < self.menu_width) : (i += 1) {
self.text.put_char('-');
}
}
pub fn draw_menu_items(
self: *Renderer,
items: []const MenuItem,
selected: usize,
scroll_offset: usize,
) void {
var row: u32 = 0;
while (row < self.visible_items and (scroll_offset + row) < items.len) : (row += 1) {
const item_index = scroll_offset + row;
const item = items[item_index];
const is_selected = item_index == selected;
self.draw_menu_item(item, row, is_selected);
}
}
fn draw_menu_item(self: *Renderer, item: MenuItem, row: u32, selected: bool) void {
const y = self.menu_y + row;
if (selected) {
self.text.set_colors(self.theme.highlight_fg, self.theme.highlight_bg);
} else if (!item.enabled) {
self.text.set_colors(self.theme.border, self.theme.background);
} else {
self.text.set_colors(self.theme.foreground, self.theme.background);
}
self.text.set_cursor(self.menu_x, y);
if (selected) {
self.text.print("> ");
} else {
self.text.print(" ");
}
self.text.print(item.label);
var i: u32 = @intCast(item.label.len + 2);
while (i < self.menu_width) : (i += 1) {
self.text.put_char(' ');
}
}
pub fn draw_description(self: *Renderer, description: []const u8) void {
const desc_y = self.text.rows - 3;
self.text.set_colors(self.theme.foreground, self.theme.background);
self.text.set_cursor(self.menu_x, desc_y);
var i: u32 = 0;
while (i < self.menu_width) : (i += 1) {
self.text.put_char(' ');
}
self.text.set_cursor(self.menu_x, desc_y);
self.text.print(description);
}
pub fn draw_footer(self: *Renderer) void {
const footer_y = self.text.rows - 1;
self.text.set_colors(self.theme.border, self.theme.background);
self.text.set_cursor(self.menu_x, footer_y);
self.text.print("Up/Down: Navigate Enter: Select Esc: Cancel");
}
pub fn draw_scrollbar(self: *Renderer, total_items: usize, visible: usize, offset: usize) void {
if (total_items <= visible) {
return;
}
const scrollbar_x = self.menu_x + self.menu_width + 1;
const scrollbar_height = self.visible_items;
const thumb_height = (visible * scrollbar_height) / total_items;
const thumb_height_clamped = if (thumb_height < 1) 1 else @as(u32, @intCast(thumb_height));
const thumb_offset = (offset * scrollbar_height) / total_items;
var i: u32 = 0;
while (i < scrollbar_height) : (i += 1) {
self.text.set_cursor(scrollbar_x, self.menu_y + i);
if (i >= thumb_offset and i < thumb_offset + thumb_height_clamped) {
self.text.set_colors(self.theme.highlight_bg, self.theme.background);
self.text.put_char('#');
} else {
self.text.set_colors(self.theme.border, self.theme.background);
self.text.put_char('|');
}
}
}
pub fn draw_progress(self: *Renderer, message: []const u8, percent: u32) void {
const progress_y = self.text.rows / 2;
const progress_width: u32 = 40;
const progress_x = (self.text.columns - progress_width) / 2;
self.text.set_colors(self.theme.foreground, self.theme.background);
self.text.set_cursor((self.text.columns - @as(u32, @intCast(message.len))) / 2, progress_y - 1);
self.text.print(message);
self.text.set_cursor(progress_x, progress_y);
self.text.put_char('[');
const filled = (percent * (progress_width - 2)) / 100;
var i: u32 = 0;
while (i < progress_width - 2) : (i += 1) {
if (i < filled) {
self.text.set_colors(self.theme.success, self.theme.background);
self.text.put_char('=');
} else {
self.text.set_colors(self.theme.border, self.theme.background);
self.text.put_char('-');
}
}
self.text.set_colors(self.theme.foreground, self.theme.background);
self.text.put_char(']');
}
pub fn draw_message(self: *Renderer, message: []const u8, is_error: bool) void {
const msg_y = self.text.rows / 2;
if (is_error) {
self.text.set_colors(self.theme.error_color, self.theme.background);
} else {
self.text.set_colors(self.theme.success, self.theme.background);
}
self.text.set_cursor((self.text.columns - @as(u32, @intCast(message.len))) / 2, msg_y);
self.text.print(message);
}
};
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