Problems with the Linux version of XAMPP, questions, comments, and anything related.
by Reputer » 14. October 2003 20:27
Hi Oswald,
My graphics seems to get in 256 collors when rendered trough GD.
Do you have a clou what this error could be?
For an example goo to
http://145.99.201.226/repute/imagebrowser/
I'm running lampp 1.3 on redhat 9....
Please help me im desperetly looking foor the answer.
Thnx,
Repute
-
Reputer
-
by Oswald » 15. October 2003 09:26
Hi Repute!
Please use ImageCreateTruecolor() instead of ImageCreate() and use ImageCopyResampled() instead of ImageCopyResized().
Both commands have the same parameters so you can simply replace them.
Good luck,
Oswald
-
Oswald
- Apache Friends
-
- Posts: 2718
- Joined: 26. December 2002 19:51
- Location: Berlin, Germany
- Operating System: Linux
-
by Reputer » 15. October 2003 11:35
Thanks for your great answer!
But I already done that is it possible that GD isnt correctly installed?
I mean that redhat still uses GD 1?
I only installed your lampp 1.3 can I give a comand to see what GD linix is using?
Thanks Reputer
-
Reputer
-
by Oswald » 15. October 2003 11:39
Simply call phpinfo(). You will find a gd section. If you're using XAMPP 1.3 you should have GD 2.0.15.
Greetings
Oswald
-
Oswald
- Apache Friends
-
- Posts: 2718
- Joined: 26. December 2002 19:51
- Location: Berlin, Germany
- Operating System: Linux
-
by Reputer » 15. October 2003 12:35
Ok wel that shoould not be the problem its al set to gd 2 2.0.15
I'm getting confused now
But thanks your the best!
-
Reputer
-
by Reputer » 16. October 2003 12:55
Hi again
This is the code i use
- Code: Select all
<?PHP
//this class works with image
class hft_image {
var $image_original;
var $file_original;
var $image_original_width;
var $image_original_height;
var $image_original_type_code;
var $image_original_type_abbr;
var $image_original_html_sizes;
var $image_resized;
var $file_resized;
var $image_resized_width;
var $image_resized_height;
var $image_resized_type_code;
var $image_resized_type_abbr;
var $image_resized_html_sizes;
//some settings
var $jpeg_quality;
var $use_gd2;
function hft_image($file_original){
//constructor of the class
//it takes given file and creates image out of it
global $ERR;
$this->clear(); // clear all.
if(file_exists($file_original)) {
$this->file_original = $file_original;
$this->image_original = $this->imagecreatefromfile($file_original);
if(!$this->image_original){
$this->error($ERR["IMAGE_NOT_CREATED_FROM_FILE"]." file=$file_original");
return false;
}
} else {
$this->error($ERR["FILE_DOESNOT_EXSIT"]." file=$file_original");
}
}
function clear() {
// clear all the class member varaibles
$this->image_original = 0;
$this->file_original = "";
$this->image_original_width = 0;
$this->image_original_height = 0;
$this->image_original_type_code = 0;
$this->image_original_type_abbr = "";
$this->image_original_html_sizes= "";
$this->image_resized = 0;
$this->file_resized = "";
$this->image_resized_width = 0;
$this->image_resized_height = 0;
$this->image_resized_type_code = -1;
$this->image_resized_type_abbr = "";
$this->image_resized_html_sizes = "";
$this->set_parameters();
}
function set_parameters($jpeg_quality="85", $use_gd2=true) {
$this->jpeg_quality=$jpeg_quality;
$this->use_gd2=$use_gd2;
}
function error($msg){
//error messages and debug info:
// here you can implement your own error handling
echo("<hr color='red'><font color='red'><b>$msg</b></font><br> file=<b>".__FILE__."</b><hr color='red'>");
}
function imagecreatefromfile($img_file){
global $ERR;
$img=0;
$img_sz = getimagesize( $img_file ); ## returns array with some properties like dimensions and type;
####### Now create original image from uploaded file. Be carefull! GIF is often not supported, as far as I remember from GD 1.6
switch( $img_sz[2] ){
case 1:
$img = $this->_imagecheckandcreate("ImageCreateFromGif", $img_file);
$img_type = "GIF";
break;
case 2:
$img = $this->_imagecheckandcreate("ImageCreateFromJpeg", $img_file);
$img_type = "JPG";
break;
case 3:
$img = $this->_imagecheckandcreate("ImageCreateFromPng", $img_file);
$img_type = "PNG";
break;
// would be nice if this function will be finally supported
case 4:
$img = $this->_imagecheckandcreate("ImageCreateFromSwf", $img_file);
$img_type = "SWF";
break;
default:
$img = 0;
$img_type = "UNKNOWN";
$this->error($ERR["IMG_NOT_SUPPORTED"]." $img_file");
break;
}//case
if($img){
$this->image_original_width=$img_sz[0];
$this->image_original_height=$img_sz[1];
$this->image_original_type_code=$img_sz[2];
$this->image_original_type_abbr=$img_type;
$this->image_original_html_sizes=$img_sz[3];
}else {
$this->clear();
}
return $img;
}
function _imagecheckandcreate($function, $img_file) {
//inner function used from imagecreatefromfile().
//Checks if the function exists and returns
//created image or false
global $ERR;
if(function_exists($function)) {
$img = $function($img_file);
}else{
$img = false;
$this->error($ERR["FUNCTION_DOESNOT_EXIST"]." ".$function);
}
return $img;
}
function resize($desired_width, $desired_height, $mode="-"){
//this is core function--it resizes created image
//if any of parameters == "*" then no resizing on this parameter
//>> mode = "+" then image is resized to cover the region specified by desired_width, _height
//>> mode = "-" then image is resized to fit into the region specified by desired_width, _height
// width-to-height ratio is all the time the same
//>>mode=0 then image will be exactly resized to $desired_width _height.
//geometrical distortion can occur in this case.
// say u have picture 400x300 and there is circle on the picture
//now u resized in mode=0 to 800x300 -- circle shape will be distorted and will look like ellipse.
//GD2 provides much better quality but is not everywhere installed
global $ERR;
if($desired_width == "*" && $desired_height == "*"){
$this->image_resized = $this->image_original;
Return true;
}
switch($mode) {
case "-":
case '+':
//multipliers
if($desired_width != "*") $mult_x = $desired_width / $this->image_original_width;
if($desired_height != "*") $mult_y = $desired_height / $this->image_original_height;
$ratio = $this->image_original_width / $this->image_original_height;
if($desired_width == "*"){
$new_height = $desired_height;
$new_width = $ratio * $desired_height;
}elseif($desired_height == "*"){
$new_height = $desired_width / $ratio;
$new_width = $desired_width;
}else{
if($mode=="-"){
if( $this->image_original_height * $mult_x < $desired_height ){
//image must be smaller than given $desired_ region
//test which multiplier gives us best result
//$mult_x does the job
$new_width = $desired_width;
$new_height = $this->image_original_height * $mult_x;
}else{
//$mult_y does the job
$new_width = $this->image_original_width * $mult_y;
$new_height = $desired_height;
}
}else{
//mode == "+"
// cover the region
//image must be bigger than given $desired_ region
//test which multiplier gives us best result
if( $this->image_original_height * $mult_x > $desired_height ){
//$mult_x does the job
$new_width = $desired_width;
$new_height = $this->image_original_height * $mult_x;
}else{
//$mult_y does the job
$new_width = $this->image_original_width * $mult_y;
$new_height = $desired_height;
}
}
}
break;
case '0':
//fit the region exactly.
if($desired_width == "*") $desired_width = $this->image_original_width;
if($desired_height == "*") $desired_height = $this->image_original_height;
$new_width = $desired_width;
$new_height = $desired_height;
break;
default:
$this->error($ERR["UNKNOWN_RESIZE_MODE"]." $mode");
break;
}
// OK here we have $new_width _height
//create destination image checking for GD2 functions:
if( $this->use_gd2 ){
if( function_exists("ImageCreateTruecolor")){
$this->image_resized = ImageCreateTruecolor($new_width, $new_height) or $this->error($ERR["GD2_NOT_CREATED"]);
}else {
$this->error($ERR["GD2_UNAVALABLE"]." ImageCreateTruecolor()");
}
} else {
$this->image_resized = imagecreate($new_width, $new_height) or $this->error($ERR["IMG_NOT_CREATED"]);
}
//Resize
if( $this->use_gd2 ){
if( function_exists("ImageCopyResampled")){
$res = ImageCopyResampled($this->image_resized,
$this->image_original,
0, 0, //dest coord
0, 0, //source coord
$new_width, $new_height, //dest sizes
$this->image_original_width, $this->image_original_height // src sizes
) or $this->error($ERR["GD2_NOT_RESIZED"]);
}else {
$this->error($ERR["GD2_UNAVALABLE"]." ImageCopyResampled()");
}
} else {
$res = imagecopyresized($this->image_resized,
$this->image_original,
0, 0, //dest coord
0, 0, //source coord
$new_width, $new_height, //dest sizes
$this->image_original_width, $this->image_original_height // src sizes
) or $this->error($ERR["IMG_NOT_RESIZED"]);
}
}
function output_original($destination_file, $image_type="JPG") {
//outputs original image
//if destination file is empty image will be output to browser
// right now $image_type can be JPG or PNG
return _output_image($destination_file, $image_type, $this->image_original);
}
function output_resized($destination_file, $image_type="JPG") {
//if destination file is empty image will be output to browser
// right now $image_type can be JPG or PNG
$res = $this->_output_image($destination_file, $image_type, $this->image_resized);
if(trim($destination_file)){
$sz=getimagesize($destination_file);
$this->file_resized = $destination_file;
$this->image_resized_width = $sz[0];
$this->image_resized_height = $sz[1];
$this->image_resized_type_code=$sz[2];
$this->image_resized_html_sizes=$sz[3];
//only jpeg and png are really supported, but I'd like to think of future
switch($this->image_resized_html_sizes){
case 0:
$this->image_resized_type_abbr = "GIF";
break;
case 1:
$this->image_resized_type_abbr = "JPG";
break;
case 2:
$this->image_resized_type_abbr = "PNG";
break;
case 3:
$this->image_resized_type_abbr = "SWF";
break;
default:
$this->image_resized_type_abbr = "UNKNOWN";
break;
}
}
return $res;
}
function _output_image($destination_file, $image_type, $image){
//if destination file is empty image will be output to browser
// right now $image_type can be JPEG or PNG
global $ERR;
$destination_file = trim($destination_file);
$res = false;
if($image){
switch($image_type) {
case 'JPEG':
case 'JPG':
$res = ImageJpeg($image, $destination_file, $this->jpeg_quality);
break;
case 'PNG':
$res = Imagepng($image, $destination_file);
break;
default:
$this->error($ERR["UNKNOWN_OUTPUT_FORMAT"]." $image_type");
break;
}
}else{
$this->error($ERR["NO_IMAGE_FOR_OUTPUT"]);
}
if(!$res) $this->error($ERR["UNABLE_TO_OUTPUT"]." $destination_file");
return $res;
}
}
?>
-
Reputer
-
by Reputer » 16. October 2003 12:57
Do you see something thats unsuported in GD2?
Thnx Repute?
-
Reputer
-
by Oswald » 16. October 2003 13:07
Hi Repute!
Could you email me the file? And a small example to use the class?
oswald@apachefriends.org
Gruß
Oswald
-
Oswald
- Apache Friends
-
- Posts: 2718
- Joined: 26. December 2002 19:51
- Location: Berlin, Germany
- Operating System: Linux
-
Return to XAMPP for Linux
Who is online
Users browsing this forum: No registered users and 21 guests