<?phpnamespace App\Gui;use JumPHP\Renderer\Renderer;use JumPHP\Renderer\Sdl;use JumPHP\Util\Color;/** * A monospaced font drawn glyph by glyph from strips rendered once per colour (assets/fonts/mono.ttf, Liberation Mono): * the grid and the SQL editor draw thousands of short texts, which a texture per text (TtfFont) would make slow. * Every character is `advance` pixels wide, so a column of text is a multiplication. */final class MonoFont{ private const ASCII = ' !"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~'; /** @var array<int, self> per pixel size */ private static array $fonts = []; public int $advance = 8; public int $height = 16; private mixed $font = null; /** @var array<string, mixed> colour => the ASCII strip */ private array $strips = []; /** @var array<string, array{0: mixed, 1: int}> colour|char => texture, width (the other characters) */ private array $glyphs = []; public static function get(?Sdl $sdl, int $px): self { return self::$fonts[$px] ??= new self($sdl, $px); } private function __construct(private ?Sdl $sdl, int $px) { $root = defined('JUMPHP_ROOT') ? (string)JUMPHP_ROOT : (string)getcwd(); $file = rtrim($root, '/') . '/assets/fonts/mono.ttf'; if ($sdl !== null && function_exists('TTF_OpenFont') && is_file($file)) { if (function_exists('TTF_WasInit') && !\TTF_WasInit()) { \TTF_Init(); } $font = \TTF_OpenFont($file, $px); if ($font) { $this->font = $font; $w = $h = 0; \TTF_SizeUTF8($font, 'M', $w, $h); $this->advance = max(1, (int)$w); $this->height = (int)\TTF_FontHeight($font); return; } } $this->advance = max(1, (int)round($px * 0.6)); $this->height = (int)round($px * 1.2); } public function width(string $text): int { return mb_strlen($text) * $this->advance; } /** How many characters fit in a width. */ public function fits(float $width): int { return max(0, (int)floor($width / $this->advance)); } /** One line (control characters shown as spaces), cut at $maxChars (0: no limit) with "…". */ public function draw(Renderer $r, string $text, float $x, float $y, Color|array|string $color, int $maxChars = 0): void { if ($this->font === null || $text === '') { return; } $chars = mb_str_split($text) ?: []; if ($maxChars > 0 && count($chars) > $maxChars) { $chars = array_slice($chars, 0, max(0, $maxChars - 1)); $chars[] = '…'; } $c = Color::of($color); $strip = $this->strip($c); $x = round($x); $y = round($y); foreach ($chars as $char) { if ($char !== ' ') { $at = strpos(self::ASCII, $char); if ($at !== false && strlen($char) === 1) { $r->copy($strip, [$at * $this->advance, 0, $this->advance, $this->height], $x, $y, $this->advance, $this->height); } elseif (ord($char[0]) >= 32 || strlen($char) > 1) { [$texture, $w] = $this->glyph($c, $char); if ($texture) { $r->copy($texture, null, $x, $y, $w, $this->height); } } } $x += $this->advance; } } private function strip(Color $c): mixed { $key = $c->key(); if (!isset($this->strips[$key])) { $surface = \TTF_RenderUTF8_Blended($this->font, self::ASCII, new \SDL_Color($c->r, $c->g, $c->b, $c->a)); $this->strips[$key] = \SDL_CreateTextureFromSurface($this->sdl->getRenderer()->getRenderer(), $surface); \SDL_FreeSurface($surface); } return $this->strips[$key]; } /** @return array{0: mixed, 1: int} */ private function glyph(Color $c, string $char): array { $key = $c->key() . '|' . $char; if (!isset($this->glyphs[$key])) { if (count($this->glyphs) > 2000) { foreach ($this->glyphs as [$texture]) { $texture && \SDL_DestroyTexture($texture); } $this->glyphs = []; } $surface = \TTF_RenderUTF8_Blended($this->font, $char, new \SDL_Color($c->r, $c->g, $c->b, $c->a)); if (!$surface) { return $this->glyphs[$key] = [null, 0]; } $texture = \SDL_CreateTextureFromSurface($this->sdl->getRenderer()->getRenderer(), $surface); $w = $h = $f = $a = 0; \SDL_QueryTexture($texture, $f, $a, $w, $h); \SDL_FreeSurface($surface); $this->glyphs[$key] = [$texture, min((int)$w, $this->advance * 2)]; } return $this->glyphs[$key]; }}