old imagehelper remove
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<?php
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namespace Alphaland\UI {
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use GdImage;
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class ImageHelper
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{
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public static function CopyMergeImageAlpha(GdImage $dst_image, GdImage $src_image, int $dst_x, int $dst_y, int $src_x, int $src_y, int $src_w, int $src_h, int $pct): void
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{
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$img = imagecreatetruecolor($src_w, $src_h);
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imagecopy($img, $dst_image, 0, 0, $dst_x, $dst_y, $src_w, $src_h);
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imagecopy($img, $src_image, 0, 0, $src_x, $src_y, $src_w, $src_h);
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imagecopymerge($dst_image, $img, $dst_x, $dst_y, 0, 0, $src_w, $src_h, $pct);
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}
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public static function IsBase64PNGImage(string $base64): bool
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{
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$mime = finfo_buffer(finfo_open(), $base64, FILEINFO_MIME_TYPE);
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if (in_array($mime, array("image/png"))) {
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return true;
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}
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return false;
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}
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public static function ResizeImageFromString(int $newWidth, int $newHeight, string $targetFile, string $originalFile): bool
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{
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$img = imagecreatefromstring($originalFile);
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$width = imagesx($img);
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$height = imagesy($img);
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$tmp = imagecreatetruecolor($newWidth, $newHeight);
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imagealphablending($tmp, false);
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imagesavealpha($tmp, true);
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imagecopyresampled($tmp, $img, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
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if (imagepng($tmp, "$targetFile")) {
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return true;
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}
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return false;
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}
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}
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}
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