A super easy PHP Framework for web development!
https://github.com/exacti/phacil-framework
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293 lines
8.8 KiB
293 lines
8.8 KiB
<?php
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/*
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* Copyright © 2021 ExacTI Technology Solutions. All rights reserved.
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* GPLv3 General License.
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* https://exacti.com.br
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* Phacil PHP Framework - https://github.com/exacti/phacil-framework
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*/
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namespace Phacil\Framework;
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use Exception;
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/** @package Phacil\Framework */
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final class Image {
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private $file;
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private $image;
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private $info;
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/**
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* @param string $file
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* @return void
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* @throws Exception
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*/
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public function __construct($file) {
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if(!extension_loaded('gd')){
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throw new \Exception("The image function requires GD extension on PHP!");
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}
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if($this->infoChk($file))
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$this->image = $this->create($file);
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else
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throw new \Exception('Error: Could not load image ' . $file . '!');
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}
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/**
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* @param string $file
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* @param bool $infoFile
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* @return bool
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*/
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private function infoChk($file, $infoFile = true){
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if (file_exists($file)) {
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$this->file = $file;
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$info = getimagesize($file);
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if($infoFile) {
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$this->info = array(
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'width' => $info[0],
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'height' => $info[1],
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'bits' => $info['bits'],
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'mime' => $info['mime']
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);
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}
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return true;
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} else {
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return false;
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}
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}
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/**
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* @param string $image
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* @return GdImage|false|void
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*/
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private function create($image) {
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$info = getimagesize($image);
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$mime = $info['mime'];
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if ($mime == 'image/gif') {
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return imagecreatefromgif($image);
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} elseif ($mime == 'image/png') {
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return imagecreatefrompng($image);
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} elseif ($mime == 'image/jpeg') {
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return imagecreatefromjpeg($image);
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}
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}
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/**
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* @param string $file
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* @param int $quality
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* @return void
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*/
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public function save($file, $quality = 90) {
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$info = pathinfo($file);
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$extension = strtolower($info['extension']);
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if ($extension == 'jpeg' || $extension == 'jpg') {
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imagejpeg($this->image, $file, $quality);
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} elseif($extension == 'png') {
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imagepng($this->image, $file, 0);
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} elseif($extension == 'gif') {
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imagegif($this->image, $file);
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}
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imagedestroy($this->image);
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}
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/**
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* @param int $width
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* @param int $height
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* @return void
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*/
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public function resize($width = 0, $height = 0) {
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if (!$this->info['width'] || !$this->info['height']) {
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return;
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}
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$xpos = 0;
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$ypos = 0;
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$scale = min($width / $this->info['width'], $height / $this->info['height']);
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if ($scale == 1) {
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return;
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}
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$new_width = (int)($this->info['width'] * $scale);
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$new_height = (int)($this->info['height'] * $scale);
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$xpos = (int)(($width - $new_width) / 2);
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$ypos = (int)(($height - $new_height) / 2);
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$image_old = $this->image;
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$this->image = imagecreatetruecolor($width, $height);
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if (isset($this->info['mime']) && $this->info['mime'] == 'image/png') {
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imagealphablending($this->image, false);
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imagesavealpha($this->image, true);
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$background = imagecolorallocatealpha($this->image, 255, 255, 255, 127);
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imagecolortransparent($this->image, $background);
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} else {
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$background = imagecolorallocate($this->image, 255, 255, 255);
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}
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imagefilledrectangle($this->image, 0, 0, $width, $height, $background);
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imagecopyresampled($this->image, $image_old, $xpos, $ypos, 0, 0, $new_width, $new_height, $this->info['width'], $this->info['height']);
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imagedestroy($image_old);
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$this->info['width'] = $width;
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$this->info['height'] = $height;
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}
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/**
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* @param string $file
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* @param string $position
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* @param int $opacity
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* @return false|void
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*/
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public function watermark($file, $position = 'bottomright', $opacity = 100) {
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if($this->infoChk($file, false))
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$watermark = $this->create($file);
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else
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return false;
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$watermark_width = imagesx($watermark);
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$watermark_height = imagesy($watermark);
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switch($position) {
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case 'topleft':
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$watermark_pos_x = 0;
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$watermark_pos_y = 0;
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break;
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case 'topright':
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$watermark_pos_x = $this->info['width'] - $watermark_width;
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$watermark_pos_y = 0;
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break;
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case 'bottomleft':
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$watermark_pos_x = 0;
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$watermark_pos_y = $this->info['height'] - $watermark_height;
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break;
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case 'bottomright':
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$watermark_pos_x = $this->info['width'] - $watermark_width;
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$watermark_pos_y = $this->info['height'] - $watermark_height;
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break;
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}
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imagealphablending( $this->image, true );
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imagesavealpha( $this->image, true );
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imagealphablending($watermark, false);
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imagesavealpha($watermark, true);
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$background = imagecolorallocatealpha($watermark, 255, 255, 255, 127);
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imagecolortransparent($watermark, $background);
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//$image = $watermark;
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$opacity = $opacity/100;
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$transparency = 1 - $opacity;
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imagefilter($watermark, IMG_FILTER_COLORIZE, 0,0,0,127*$transparency);
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//imagepng($watermark, DIR_IMAGE."testeWater".md5(rand()).".png");
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//$this->imagecopymerge_alpha($this->image, $watermark, $watermark_pos_x, $watermark_pos_y, 0, 0, $watermark_width, $watermark_height, $opacity);
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imagecopy($this->image, $watermark, $watermark_pos_x, $watermark_pos_y, 0, 0, $watermark_width, $watermark_height);
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imagedestroy($watermark);
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}
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/**
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* @param int $top_x
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* @param int $top_y
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* @param int $bottom_x
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* @param int $bottom_y
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* @return void
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*/
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public function crop($top_x, $top_y, $bottom_x, $bottom_y) {
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$image_old = $this->image;
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$this->image = imagecreatetruecolor($bottom_x - $top_x, $bottom_y - $top_y);
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imagecopy($this->image, $image_old, 0, 0, $top_x, $top_y, $this->info['width'], $this->info['height']);
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imagedestroy($image_old);
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$this->info['width'] = $bottom_x - $top_x;
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$this->info['height'] = $bottom_y - $top_y;
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}
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/**
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* @param int $degree
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* @param string $color
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* @return void
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*/
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public function rotate($degree, $color = 'FFFFFF') {
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$rgb = $this->html2rgb($color);
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$this->image = imagerotate($this->image, $degree, imagecolorallocate($this->image, $rgb[0], $rgb[1], $rgb[2]));
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$this->info['width'] = imagesx($this->image);
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$this->info['height'] = imagesy($this->image);
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}
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/**
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* @param mixed $filter
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* @return void
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*/
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private function filter($filter) {
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imagefilter($this->image, $filter);
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}
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/**
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* @param string $text
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* @param int $x
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* @param int $y
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* @param int $size
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* @param string $color
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* @return void
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*/
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private function text($text, $x = 0, $y = 0, $size = 5, $color = '000000') {
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$rgb = $this->html2rgb($color);
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imagestring($this->image, $size, $x, $y, $text, imagecolorallocate($this->image, $rgb[0], $rgb[1], $rgb[2]));
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}
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/**
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* @param string $file
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* @param int $x
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* @param int $y
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* @param int $opacity
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* @return void
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*/
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private function merge($file, $x = 0, $y = 0, $opacity = 100) {
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$merge = $this->create($file);
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$merge_width = imagesx($image);
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$merge_height = imagesy($image);
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imagecopymerge($this->image, $merge, $x, $y, 0, 0, $merge_width, $merge_height, $opacity);
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}
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/**
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* @param string $color
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* @return false|(int|float)[]
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*/
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private function html2rgb($color) {
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if ($color[0] == '#') {
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$color = substr($color, 1);
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}
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if (strlen($color) == 6) {
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list($r, $g, $b) = array($color[0] . $color[1], $color[2] . $color[3], $color[4] . $color[5]);
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} elseif (strlen($color) == 3) {
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list($r, $g, $b) = array($color[0] . $color[0], $color[1] . $color[1], $color[2] . $color[2]);
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} else {
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return false;
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}
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$r = hexdec($r);
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$g = hexdec($g);
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$b = hexdec($b);
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return array($r, $g, $b);
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}
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}
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