load->model('tool/image'); } public function transparent($width, $height) { static $imgs = []; $width = (int) $width ?: 1; $height = (int) $height ?: 1; $key = "{$width}x{$height}"; if ( ! isset( $imgs[ $key ] ) ) { // REF: http://stackoverflow.com/questions/9370847/php-create-image-with-imagepng-and-convert-with-base64-encode-in-a-single-file ob_start(); $img = imagecreatetruecolor( $width, $height ); imagesavealpha( $img, true ); imagetruecolortopalette( $img, false, 1 ); $color = imagecolorallocatealpha( $img, 0, 0, 0, 127 ); imagefill( $img, 0, 0, $color ); imagepng( $img, null, 9 ); imagedestroy( $img ); $data = ob_get_contents(); ob_end_clean(); $imgs[ $key ] = 'data:image/png;base64,' . base64_encode( $data ); } return $imgs[ $key ]; } private function isNumeric($value) { return is_numeric($value) && $value > 0; } public function dimensions($filename) { if ($filename && is_file(DIR_IMAGE . $filename)) { list($width, $height) = @getimagesize(DIR_IMAGE . $filename); if (!$width || !$height) { trigger_error('Image ' . DIR_IMAGE . $filename . ' is invalid!'); } } else { $width = null; $height = null; } return array($width, $height); } public function resize($filename, $width = null, $height = null, $resize_type = '') { if (is_array($filename)) { $filename = Arr::get($filename, $this->config->get('config_language_id')); } // Interstore remote image if (Str::endsWith($filename, '.http')) { return trim(file_get_contents(DIR_IMAGE . $filename)); } // svg image if (Str::endsWith($filename, '.svg')) { return $this->model_tool_image->resize($filename, $width, $height, $resize_type); } // external image if (Str::startsWith($filename, 'http://') || Str::startsWith($filename, 'https://')) { return $filename; } if (!$filename || !is_file(DIR_IMAGE . $filename)) { $filename = 'placeholder.png'; } list($width_orig, $height_orig) = $this->dimensions($filename); if (!$this->isNumeric($width) && !$this->isNumeric($height)) { return $this->model_tool_image->resize($filename, $width_orig, $height_orig); } $ratio_orig = (float)$width_orig / $height_orig; if ($this->isNumeric($width) && $this->isNumeric($height)) { if ($resize_type === 'fill' || $resize_type === 'crop') { $ratio = (float)$width / $height; if ($ratio > $ratio_orig) { $resize_type = 'w'; } else if ($ratio < $ratio_orig) { $resize_type = 'h'; } else { $resize_type = ''; } } else { $ratio = (float)$width / $height; if ($ratio > $ratio_orig) { $resize_type = 'h'; } else if ($ratio < $ratio_orig) { $resize_type = 'w'; } else { $resize_type = ''; } } } else if ($this->isNumeric($width)) { $height = $width / $ratio_orig; } else { $width = $height * $ratio_orig; } return $this->model_tool_image->resize($filename, $width, $height, $resize_type); } }