89 lines
2.3 KiB
PHP
89 lines
2.3 KiB
PHP
<?php
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namespace NoccyLabs\GdLabel\Elements;
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use NoccyLabs\GdLabel\Element;
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class TextElement extends Element
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{
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private static $fontCache = [];
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private static function findFont($font, $style='regular')
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{
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if (count(self::$fontCache)==0) {
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self::updateFonts();
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}
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$font = strtolower($font);
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if (array_key_exists($font, self::$fontCache)) {
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$info = self::$fontCache[$font];
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if (!$style) {
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return $info;
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}
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if (array_key_exists($style, $info)) {
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return $info[$style];
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}
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return false;
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}
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return false;
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}
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private static function updateFonts()
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{
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exec("fc-list", $output, $ret);
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if ($ret != 0) {
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fprintf(STDERR, "%s\n", join("\n",$output));
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return;
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}
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foreach ($output as $line) {
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$seg = explode(":", $line);
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$file = $seg[0];
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$name = strtolower(trim(preg_replace("/[^A-Za-z0-9 ]/", '', $seg[1])));
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$style = strtolower(str_replace("style=","",$seg[2]));
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$style = explode(",",$style);
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$style = reset($style);
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if (!array_key_exists($name, self::$fontCache)) {
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self::$fontCache[$name] = [];
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}
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self::$fontCache[$name][$style] = $file;
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}
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}
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protected function draw($gd, int $x, int $y, int $width, int $height, array $params)
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{
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if (($bound = $this->getProp("bind-value"))) {
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$value = array_key_exists($bound, $params)?$params[$bound]:"?{$bound}?";
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} else {
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$value = $this->getProp("value");
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}
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$fontName = $this->getProp("font")?:"liberation sans";
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$font = self::findFont($fontName);
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if (!$font) {
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return;
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}
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$color = $this->getPropRgb("text-color");
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$size = $this->getProp("font-size", 8);
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$dims = imagettfbbox($size, 0, $font, "AaBbXxYyZz0129:;.");
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$textAscent = abs($dims[7]);
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$textDescent = abs($dims[1]);
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$textWidth = abs($dims[0])+abs($dims[2]);
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$textHeight = $textAscent+$textDescent;
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imagettftext($gd, $size, 0, $x, $y + $textAscent, $color, $font, $value);
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//imagestring($gd, $size, $x, $y, $value, $color);
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}
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}
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