Source Code for GD library image function

by on June 12, 2007 in Downloads, php, php source code

gd.thumbnail

Hello my php friends,

I have written a class library using gb for a lot of image functions:

  • Resize
  • Round Edge
  • Rotate
  • Watermark

Click details for Souce code:

PHP
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Class Thump
{
public function Resize($image,$new_width,$new_height=0)
{
$old_width = imagesx($image);
$old_height= imagesy($image);
if($new_height==0) // if the height is not specified....calculate the relative height
$new_height= $new_width * $old_height / $old_width ;
$new_image= imagecreatetruecolor($new_width, $new_height);
imagecopyresampled($new_image, $image, 0, 0, 0, 0, $new_width, $new_height, $old_width, $old_height);
return $new_image;
}
public function RoundImage($image,$corner_radius=20,$topleft=true,$topright=true,$bottomleft=true,$bottomright=true)
{
$corner_source = imagecreatefrompng(sfConfig::get('sf_root_dir').'/web/images/rounded_corner.png');
$corner_width = imagesx($corner_source);
$corner_height = imagesy($corner_source);
$corner_resized = ImageCreateTrueColor($corner_radius, $corner_radius);
ImageCopyResampled($corner_resized, $corner_source, 0, 0, 0, 0, $corner_radius, $corner_radius, $corner_width, $corner_height);
$corner_width = imagesx($corner_resized);
$corner_height = imagesy($corner_resized);
$width = imagesx($image);
$height= imagesy($image);
$white = ImageColorAllocate($image,255,255,255);
$black = ImageColorAllocate($image,0,0,0);
// Top-left corner
if ($topleft == true) {
$dest_x = 0;
$dest_y = 0;
imagecolortransparent($corner_resized, $black);
imagecopymerge($image, $corner_resized, $dest_x, $dest_y, 0, 0, $corner_width, $corner_height, 100);
}
// Bottom-left corner
if ($bottomleft == true) {
$dest_x = 0;
$dest_y = $height - $corner_height;
$rotated = imagerotate($corner_resized, 90, 0);
imagecolortransparent($rotated, $black);
imagecopymerge($image, $rotated, $dest_x, $dest_y, 0, 0, $corner_width, $corner_height, 100);
}
// Bottom-right corner
if ($bottomright == true) {
$dest_x = $width - $corner_width;
$dest_y = $height - $corner_height;
$rotated = imagerotate($corner_resized, 180, 0);
imagecolortransparent($rotated, $black);
imagecopymerge($image, $rotated, $dest_x, $dest_y, 0, 0, $corner_width, $corner_height, 100);
}
// Top-right corner
if ($topright == true) {
$dest_x = $width - $corner_width;
$dest_y = 0;
$rotated = imagerotate($corner_resized, 270, 0);
imagecolortransparent($rotated, $black);
imagecopymerge($image, $rotated, $dest_x, $dest_y, 0, 0, $corner_width, $corner_height, 100);
}
return $image;
}
public function RotateImage($image,$angle=15)
{
$white = ImageColorAllocate($image,255,255,255);
$image = imagerotate($image, $angle, $white);
return $image;
}
public function AddWaterMark($image,$logo)
{
$WM=new transparentWatermark($logo);
$WM->setStampPosition ( 400, 400);
$image = $WM->markImageFile ( $image) ;
return $image;
}
}
?>
2 Comments

2 Responses to “Source Code for GD library image function”

  1. divakar April 23, 2008 at 11:04 am #

    how to install ffmpeg or ffmpeg-php in windows.I want step by step instructions. please tell me. and where to get ffmpeg source code.

    Reply

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