<?php

namespace App\Gui;

use JumPHP\Gui\TextBox;
use JumPHP\Gui\Theme;
use JumPHP\Renderer\Renderer;

/** java.awt.TextField: white, in a sunken bevel (the engine's text box does the typing, its frame is drawn over). */
final class AwtText extends TextBox
{
    private float $time = 0;

    public function update(float $dt): void
    {
        parent::update($dt);
        $this->time += $dt;
    }

    protected function content(Theme $t, float $maxWidth, string $breakpoint): array
    {
        [$w] = parent::content($t, $maxWidth, $breakpoint);
        return [$w, $t->px(22)];
    }

    public function render(Renderer $r, Theme $t): void
    {
        // the engine's own caret (a short bar in its taller fields) would land on the first letter here: kept hidden,
        // this field draws the caret of Windows itself (below)
        \Closure::bind(function (): void {
            $this->blink = 0.9;
        }, $this, TextBox::class)();
        parent::render($r, $t);
        // the engine's focus halo and rounded frame are covered by the bevel of Windows
        $px = Awt::px($t);
        $r->fillRect($this->x - $t->px(3), $this->y - $t->px(3), $this->w + $t->px(6), $t->px(3), Awt::$face);
        $r->fillRect($this->x - $t->px(3), $this->y + $this->h, $this->w + $t->px(6), $t->px(3), Awt::$face);
        $r->fillRect($this->x - $t->px(3), $this->y, $t->px(3), $this->h, Awt::$face);
        $r->fillRect($this->x + $this->w, $this->y, $t->px(3), $this->h, Awt::$face);
        Awt::sunken($r, $this->x, $this->y, $this->w, $this->h, $px);
        // the caret of Windows: one black line the height of the text, blinking every half second (the engine's is
        // made for its own, taller fields)
        if ($this->focused && $this->caret !== null && fmod($this->time, 1.06) < 0.53) {
            $font = $t->font();
            // one pixel before the letter that follows it, never over it
            $r->fillRect($this->caret[0] - $px, $this->y + ($this->h - $font->height()) / 2, $px, $font->height(), '#000000');
        }
    }
}