noccy/php-gdlabel
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Implemented a proper font registry

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This commit is contained in:
Chris 2017-10-31 03:35:36 +01:00
parent c8abdce24a
commit 3fb9f18941
2 changed files with 115 additions and 47 deletions
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49
src/Elements/TextElement.php
View File

@ -7,52 +7,6 @@ use NoccyLabs\GdLabel\Element;
class TextElement extends Element
{
private static $fontCache = [];
private static function findFont($font, $style='regular')
{
if (count(self::$fontCache)==0) {
self::updateFonts();
}
$font = strtolower($font);
if (array_key_exists($font, self::$fontCache)) {
$info = self::$fontCache[$font];
if (!$style) {
return $info;
}
if (array_key_exists($style, $info)) {
return $info[$style];
}
return false;
}
return false;
}
private static function updateFonts()
{
exec("fc-list", $output, $ret);
if ($ret != 0) {
fprintf(STDERR, "%s\n", join("\n",$output));
return;
}
foreach ($output as $line) {
$seg = explode(":", $line);
$file = $seg[0];
$name = strtolower(trim(preg_replace("/[^A-Za-z0-9 ]/", '', $seg[1])));
$style = strtolower(str_replace("style=","",$seg[2]));
$style = explode(",",$style);
$style = reset($style);
if (!array_key_exists($name, self::$fontCache)) {
self::$fontCache[$name] = [];
}
self::$fontCache[$name][$style] = $file;
}
}
protected function draw($gd, int $x, int $y, int $width, int $height, array $params)
{
if (($bound = $this->getProp("bind-value"))) {
@ -62,8 +16,9 @@ class TextElement extends Element
}
$fontName = $this->getProp("font")?:"liberation sans";
$fontStyle = $this->getProp("font-style")?:"regular";
$font = \NoccyLabs\GdLabel\FontRegistry::getInstance()->findFont($fontName, $fontStyle);
$font = self::findFont($fontName);
if (!$font) {
return;
}

113
src/FontRegistry.php Normal file
View File

@ -0,0 +1,113 @@
<?php
namespace NoccyLabs\GdLabel;
class FontRegistry
{
private $fonts = [];
private static $instance = null;
public static function getInstance()
{
if (!self::$instance) {
self::$instance = new FontRegistry();
self::$instance->load();
}
return self::$instance;
}
public function load(string $lang='en')
{
exec("fc-list -v", $out, $ret);
$meta = []; $curr = [];
foreach ($out as $line) {
if (trim($line)) {
$curr[] = $line;
} else {
$meta[] = $curr;
$curr = [];
}
}
foreach ($meta as $font) {
$this->parseMeta($font, $lang);
}
}
private function parseMeta(array $meta, string $lang)
{
$coll = [];
foreach ($meta as $line) {
if (9 != ord($line[0]) or strpos($line,": ") === false or ctype_digit($line[1])) {
continue;
}
list ($key, $values) = explode(": ", substr($line, 1), 2);
if (preg_match('/.+lang$/', $key)) {
$base = substr($key, 0, -4);
$baseMeta = $coll[$base];
$vals = str_getcsv($baseMeta, ' ', '"');
$langs = str_getcsv($values, ' ', '"');
$keep = [];
while (count($langs)>0) {
$l = $this->parseValue(array_shift($langs));
$v = $this->parseValue(array_shift($vals));
if ($l == $lang) {
$keep[] = $v;
}
}
$coll[$base] = $keep;
} else {
$coll[$key] = $values;
}
}
foreach ($coll as $key=>$values) {
if (is_array($values)) {
continue;
}
$coll[$key] = $this->parseValue($values);
}
$langs = explode("|", $coll['lang']);
if (!in_array($lang, $langs)) {
return;
}
$this->fonts[] = (object)$coll;
}
private function parseValue($value)
{
if (substr($value, -3, 3) == "(s)") {
$value = substr($value, 0, -3);
if ($value && $value[0] == '"') {
$value = substr($value, 1, strpos($value, '"', 2)-1);
}
}
if (substr($value, -3, 3) == "(i)") {
$value = intval($value);
}
return $value;
}
public function findFont($family, $styles='regular')
{
$styles = explode(" ",$styles);
foreach ($this->fonts as $font) {
$families = array_map("strtolower", (array)$font->family);
if (!in_array(strtolower($family), $families)) {
continue;
}
$fontStyles = array_map("strtolower", $font->style);
foreach ($styles as $style) {
if (!in_array($style, $fontStyles)) {
continue(2);
}
}
if (count(array_diff($fontStyles, $styles))>0) {
continue;
}
return $font->file;
}
}
}