function doTransformImage($base_img, $img_file, $im_width, $im_height, $ext = 'jpg')
{
list($base_width, $base_height, $type, $attr) = getimagesize($base_img);
$gd_img_base = imagecreatefromjpeg($base_img);
$gd_img_dest = imagecreatetruecolor($im_width, $im_height);
imagecopyresampled($gd_img_dest, $gd_img_base, 0, 0, 0, 0, $im_width, $im_height, $base_width, $base_height);
if ($ext == 'jpg') {
//write out the image:
if (!imagejpeg($gd_img_dest, $img_file, 90)) {
return false;
}
} else {
if ($im_width == 80) {
$dcolors = 128;
} else {
$dcolors = 256;
}
ImageTrueColorToPalette2($gd_img_dest, false, $dcolors);
if (!imagepng($gd_img_dest, $img_file)) {
return false;
}
}
imagedestroy($gd_img_base);
imagedestroy($gd_img_dest);
//success:
return true;
}
function display_crop_and_frame($original_image, $original_width, $original_height, $param_width, $param_height)
{
//error_log("display_crop_and_frame");
//--------------------------------------------
// Create the cropped image
//--------------------------------------------
$ratio = $original_width / $param_width > $original_height / $param_height ? $original_height / $param_height : $original_width / $param_width;
$cropped_width = floor($ratio * $param_width);
$cropped_height = floor($ratio * $param_height);
$off_x = floor(($original_width - $cropped_width) / 2);
$off_y = floor(($original_height - $cropped_height) / 2);
$original_width = $cropped_width;
$original_height = $cropped_height;
$new_width = $param_width;
$new_height = $param_height;
$scaled_image = imagecreatetruecolor($new_width, $new_height);
imagecopyresampled($scaled_image, $original_image, 0, 0, $off_x, $off_y, $new_width, $new_height, $original_width, $original_height);
// JLR
// imagetruecolortopalette($scaled_image, true, 255);
ImageTrueColorToPalette2($scaled_image, true, 255);
//----------------------------------------
// Create the background image
//----------------------------------------
$background_image = imagecreatetruecolor($param_width, $param_height);
$black = imagecolorallocate($background_image, 0, 0, 0);
imagecolortransparent($background_image, $black);
// JLR
// imagetruecolortopalette($background_image, true, 255);
ImageTrueColorToPalette2($background_image, true, 255);
//----------------------------------------
// Calculate the offsets
//----------------------------------------
$offset_width = floor(($param_width - $new_width) / 2);
$offset_height = floor(($param_height - $new_height) / 2);
imagecopymerge($background_image, $scaled_image, $offset_width, $offset_height, 0, 0, $new_width, $new_height, 100);
//--------------------------------------------
// Display the image
//--------------------------------------------
header('Content-type: image/png');
imagepng($scaled_image);
}
