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UI_Master :: struct {
style : UI_Style;
canvas : Canvas;
root : *UI_Elem;
should_exit := false;
blink_stage := 0;
before_draw : struct {
proc := (data : *void) { };
data : *void;
};
extra_handle : struct {
proc := (e : Event, data : *void) { };
data : *void;
};
}
__ui_master : UI_Master;
set_main_scene :: (scene : UI_Scene) {
__ui_master.root = scene.root;
set_active_recursive(scene.entry);
}
run_singlethread_ui :: () {
use_default_winch_handler();
using __ui_master;
while 1 {
before_draw.proc(before_draw.data);
if should_exit break;
draw(*__ui_master);
reset_temporary_storage();
handle_key(*__ui_master, ks_getch(block = false));
if should_exit break;
}
deinit(*__ui_master);
}
run_multithread_ui :: () {
use_events(tick_duration_ms = 530);
__event_handler = .{
proc = (e : Event, __data : *void) {
using __ui_master;
if e.type == {
case .KEY;
handle_key(*__ui_master, e.key);
case .TICK;
#if ENABLE_UI_BLINKING __ui_master.blink_stage = xx !__ui_master.blink_stage;
}
extra_handle.proc(e, extra_handle.data);
},
data = null
}; defer __event_handler = .{};
using __ui_master;
while 1 {
before_draw.proc(before_draw.data);
if should_exit break;
processed := wait_and_process_events();
if should_exit break;
if processed {
draw(*__ui_master);
reset_temporary_storage();
}
}
deinit(*__ui_master);
}
#scope_file
draw :: (using ui_master : *UI_Master) {
new_zone := Ibox2.{size = terminal_state.size};
builder : String_Builder;
if new_zone != canvas.zone {
resize_clear(*canvas, new_zone);
}
ok := c_draw(*canvas, root, canvas.zone, *style);
if ok {
ks_draw_canvas(*canvas);
} else {
b_mode_set(*builder, style.text.default);
b_clear_screen(*builder);
b_print(*builder, .{0, 0}, style.text.debug, "screen to small: %x%", terminal_state.size.x, terminal_state.size.y);
}
b_cursor_set_visibility(*builder, terminal_state.cursor != ivec2.{-1, -1});
if terminal_state.cursor != ivec2.{-1, -1} then b_move_cursor(*builder, terminal_state.cursor);
ks_write(builder_to_string(*builder, allocator = temp));
}
handle_key :: (using ui_master : *UI_Master, key : Key) {
handled := handle_key(root, key);
if handled return;
if key == {
case .ESCAPE; {
should_exit = true;
unset_active_recursive(__last_set);
}
case; if key != .READ_ERROR ui_bell();
}
}
deinit :: (using ui_master : *UI_Master) {
deinit(*canvas);
__ui_master = .{};
}
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