104 lines
3.7 KiB
PHP
104 lines
3.7 KiB
PHP
<?php
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class SimpleImage {
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var $image;
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var $image_type;
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function load($filename) {
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$image_info = getimagesize($filename);
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$this->image_type = $image_info[2];
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if ($this->image_type == IMAGETYPE_JPEG) {
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$this->image = imagecreatefromjpeg($filename);
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} elseif ($this->image_type == IMAGETYPE_GIF) {
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$this->image = imagecreatefromgif($filename);
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} elseif ($this->image_type == IMAGETYPE_PNG) {
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$this->image = imagecreatefrompng($filename);
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}
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}
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function saveas($filename, $image_type = IMAGETYPE_JPEG, $compression = 75, $permissions = null) {
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if ($image_type == IMAGETYPE_JPEG) {
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imagejpeg($this->image, $filename, $compression);
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} elseif ($image_type == IMAGETYPE_GIF) {
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imagegif($this->image, $filename);
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} elseif ($image_type == IMAGETYPE_PNG) {
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imagepng($this->image, $filename);
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} if ($permissions != null) {
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chmod($filename, $permissions);
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}
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}
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function save($filename) {
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if ($this->image_type == IMAGETYPE_JPEG) {
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imagejpeg($this->image, $filename);
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} elseif ($this->image_type == IMAGETYPE_GIF) {
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imagegif($this->image, $filename);
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} elseif ($this->image_type == IMAGETYPE_PNG) {
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imagepng($this->image, $filename);
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}
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}
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function output($image_type = IMAGETYPE_JPEG) {
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if ($image_type == IMAGETYPE_JPEG) {
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imagejpeg($this->image);
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} elseif ($image_type == IMAGETYPE_GIF) {
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imagegif($this->image);
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} elseif ($image_type == IMAGETYPE_PNG) {
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imagepng($this->image);
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}
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}
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function getWidth() {
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return imagesx($this->image);
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}
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function getHeight() {
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return imagesy($this->image);
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}
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function resizeToHeight($height) {
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$ratio = $height / $this->getHeight();
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$width = $this->getWidth() * $ratio;
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$this->resize($width, $height);
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}
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function resizeToWidth($width) {
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$ratio = $width / $this->getWidth();
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$height = $this->getheight() * $ratio;
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$this->resize($width, $height);
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}
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function scale($scale) {
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$width = $this->getWidth() * $scale / 100;
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$height = $this->getheight() * $scale / 100;
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$this->resize($width, $height);
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}
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function resize($width, $height) {
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$new_image = imagecreatetruecolor($width, $height);
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if ($this->image_type == IMAGETYPE_GIF || $this->image_type == IMAGETYPE_PNG) {
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$current_transparent = imagecolortransparent($this->image);
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if ($current_transparent != -1) {
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$transparent_color = imagecolorsforindex($this->image, $current_transparent);
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$current_transparent = imagecolorallocate($new_image, $transparent_color['red'], $transparent_color['green'], $transparent_color['blue']);
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imagefill($new_image, 0, 0, $current_transparent);
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imagecolortransparent($new_image, $current_transparent);
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} elseif ($this->image_type == IMAGETYPE_PNG) {
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imagealphablending($new_image, false);
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$color = imagecolorallocatealpha($new_image, 0, 0, 0, 127);
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imagefill($new_image, 0, 0, $color);
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imagesavealpha($new_image, true);
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}
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}
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imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
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$this->image = $new_image;
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}
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function close()
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{
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imagedestroy($this->image);
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}
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}
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?>
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