Matze202
Erfahrenes Mitglied
Hiho @all,
ich hoff, dass jemand den Fehler, der endlos langen Ladezeiten der folgenden Datei findet, wenn ich die Bedingungen der 1. bzw. der 2. IF-Schleife erfülle. Wenn ich jedoch keine der Bedingungen erfülle und dadurch den am Ende der Datei aufgeführten Code nutze, funktioniert das ganze problemlos.
Hier mal noch die dazu gehörige Datei, welche ich nutze, um mehrfarbige Hintergründe zu erstellen. Diese Datei findet ihr auch im Anhang als Zip-Datei.
Gruß Matze.
ich hoff, dass jemand den Fehler, der endlos langen Ladezeiten der folgenden Datei findet, wenn ich die Bedingungen der 1. bzw. der 2. IF-Schleife erfülle. Wenn ich jedoch keine der Bedingungen erfülle und dadurch den am Ende der Datei aufgeführten Code nutze, funktioniert das ganze problemlos.
PHP:
<?
require_once('./../gd-gradient-fill.php');
// Farbverläufe aus der Datenbank laden
if($_GET['site_color'] >= 1){
include('./config.inc.php');
$site_color = mysql_fetch_array(mysql_query("SELECT * FROM pl4u_bg_images WHERE id='".mysql_real_escape_string($_GET['site_color'])."'"));
$width = $site_color['width'];
$height = $site_color['height'];
$direction = $site_color['direction'];
$startcolor = "#".$site_color['startcolor'];
$endcolor = "#".$site_color['endcolor'];
$step = $site_color['step'];
$image = new gd_gradient_fill($width,$height,$direction,$startcolor,$endcolor,$step);
mysql_close();
exit;
}
// Farbverläufe über $_GET beziehen
if($_GET['width'] >= 1 AND $_GET['height'] >= 1){
$image = new gd_gradient_fill($_GET['width'],$_GET['height'],$_GET['direction'],"#".$_GET['startcolor'],"#".$_GET['endcolor'],$_GET['step']);
exit;
}
$width = "1";
$height = "800";
$direction = "vertical"; // Zur Auswahl stehen: vertical, horizontal, ellipse, ellipse2, circle, circle2, rectangle, diamond
$startcolor = "#FFBC47";
$endcolor = "#FBFFC9";
$step = "0";
$image = new gd_gradient_fill($width,$height,$direction,$startcolor,$endcolor,$step);
?>Hier mal noch die dazu gehörige Datei, welche ich nutze, um mehrfarbige Hintergründe zu erstellen. Diese Datei findet ihr auch im Anhang als Zip-Datei.
PHP:
<?php
/*
Script Name: GD Gradient Fill
Script URI: http://planetozh.com/blog/my-projects/images-php-gd-gradient-fill/
Description: Creates a gradient fill of any shape (rectangle, ellipse, vertical, horizontal, diamond)
Author: Ozh
Version: 1.1
Author URI: http://planetozh.com/
*/
/* Release history :
* 1.1
* - changed : more nicely packaged as a class
* - fixed : not displaying proper gradient colors with image dimension greater than 255 (because of a limitation in imagecolorallocate)
* - added : optional parameter 'step', more options for 'direction'
* 1.0
* - initial release
*/
/* Usage :
*
* require_once('/path/to/gd-gradient-fill.php');
* $image = new gd_gradient_fill($width,$height,$direction,$startcolor,$endcolor,$step);
*
* Parameters :
* - width and height : integers, dimesions of your image.
* - direction : string, shape of the gradient.
* Can be : vertical, horizontal, rectangle (or square), ellipse, ellipse2, circle, circle2, diamond.
* - startcolor : string, start color in 3 or 6 digits hexadecimal.
* - endcolor : string, end color in 3 or 6 digits hexadecimal.
* - step : integer, optional, default to 0. Step that breaks the smooth blending effect.
* Returns a resource identifier.
*
* Examples :
*
* 1.
* require_once('/home/ozh/www/includes/gd-gradient-fill.php');
* $image = new gd_gradient_fill(200,200,'horizontal','#fff','#f00');
*
* 2.
* require_once('c:/iis/inet/include/gd-gradient-fill.php');
* $myimg = new gd_gradient_fill(80,20,'diamond','#ff0010','#303060');
*
*/
// Test it :
// $image = new gd_gradient_fill(400,200,'ellipse','#f00','#000',0);
class gd_gradient_fill {
// Constructor. Creates, fills and returns an image
function gd_gradient_fill($w,$h,$d,$s,$e,$step=0) {
$this->width = $w;
$this->height = $h;
$this->direction = $d;
$this->startcolor = $s;
$this->endcolor = $e;
$this->step = intval(abs($step));
// Attempt to create a blank image in true colors, or a new palette based image if this fails
if (function_exists('imagecreatetruecolor')) {
$this->image = imagecreatetruecolor($this->width,$this->height);
} elseif (function_exists('imagecreate')) {
$this->image = imagecreate($this->width,$this->height);
} else {
die('Unable to create an image');
}
// Fill it
$this->fill($this->image,$this->direction,$this->startcolor,$this->endcolor);
// Show it
$this->display($this->image);
// Return it
return $this->image;
}
// Displays the image with a portable function that works with any file type
// depending on your server software configuration
function display ($im) {
if (function_exists("imagepng")) {
header("Content-type: image/png");
imagepng($im);
}
elseif (function_exists("imagegif")) {
header("Content-type: image/gif");
imagegif($im);
}
elseif (function_exists("imagejpeg")) {
header("Content-type: image/jpeg");
imagejpeg($im, "", 0.5);
}
elseif (function_exists("imagewbmp")) {
header("Content-type: image/vnd.wap.wbmp");
imagewbmp($im);
} else {
die("Doh ! No graphical functions on this server ?");
}
return true;
}
// The main function that draws the gradient
function fill($im,$direction,$start,$end) {
switch($direction) {
case 'horizontal':
$line_numbers = imagesx($im);
$line_width = imagesy($im);
list($r1,$g1,$b1) = $this->hex2rgb($start);
list($r2,$g2,$b2) = $this->hex2rgb($end);
break;
case 'vertical':
$line_numbers = imagesy($im);
$line_width = imagesx($im);
list($r1,$g1,$b1) = $this->hex2rgb($start);
list($r2,$g2,$b2) = $this->hex2rgb($end);
break;
case 'ellipse':
$width = imagesx($im);
$height = imagesy($im);
$rh=$height>$width?1:$width/$height;
$rw=$width>$height?1:$height/$width;
$line_numbers = min($width,$height);
$center_x = $width/2;
$center_y = $height/2;
list($r1,$g1,$b1) = $this->hex2rgb($end);
list($r2,$g2,$b2) = $this->hex2rgb($start);
imagefill($im, 0, 0, imagecolorallocate( $im, $r1, $g1, $b1 ));
break;
case 'ellipse2':
$width = imagesx($im);
$height = imagesy($im);
$rh=$height>$width?1:$width/$height;
$rw=$width>$height?1:$height/$width;
$line_numbers = sqrt(pow($width,2)+pow($height,2));
$center_x = $width/2;
$center_y = $height/2;
list($r1,$g1,$b1) = $this->hex2rgb($end);
list($r2,$g2,$b2) = $this->hex2rgb($start);
break;
case 'circle':
$width = imagesx($im);
$height = imagesy($im);
$line_numbers = sqrt(pow($width,2)+pow($height,2));
$center_x = $width/2;
$center_y = $height/2;
$rh = $rw = 1;
list($r1,$g1,$b1) = $this->hex2rgb($end);
list($r2,$g2,$b2) = $this->hex2rgb($start);
break;
case 'circle2':
$width = imagesx($im);
$height = imagesy($im);
$line_numbers = min($width,$height);
$center_x = $width/2;
$center_y = $height/2;
$rh = $rw = 1;
list($r1,$g1,$b1) = $this->hex2rgb($end);
list($r2,$g2,$b2) = $this->hex2rgb($start);
imagefill($im, 0, 0, imagecolorallocate( $im, $r1, $g1, $b1 ));
break;
case 'square':
case 'rectangle':
$width = imagesx($im);
$height = imagesy($im);
$line_numbers = max($width,$height)/2;
list($r1,$g1,$b1) = $this->hex2rgb($end);
list($r2,$g2,$b2) = $this->hex2rgb($start);
break;
case 'diamond':
list($r1,$g1,$b1) = $this->hex2rgb($end);
list($r2,$g2,$b2) = $this->hex2rgb($start);
$width = imagesx($im);
$height = imagesy($im);
$rh=$height>$width?1:$width/$height;
$rw=$width>$height?1:$height/$width;
$line_numbers = min($width,$height);
break;
default:
}
for ( $i = 0; $i < $line_numbers; $i=$i+1+$this->step ) {
// old values :
$old_r=$r;
$old_g=$g;
$old_b=$b;
// new values :
$r = ( $r2 - $r1 != 0 ) ? intval( $r1 + ( $r2 - $r1 ) * ( $i / $line_numbers ) ): $r1;
$g = ( $g2 - $g1 != 0 ) ? intval( $g1 + ( $g2 - $g1 ) * ( $i / $line_numbers ) ): $g1;
$b = ( $b2 - $b1 != 0 ) ? intval( $b1 + ( $b2 - $b1 ) * ( $i / $line_numbers ) ): $b1;
// if new values are really new ones, allocate a new color, otherwise reuse previous color.
// There's a "feature" in imagecolorallocate that makes this function
// always returns '-1' after 255 colors have been allocated in an image that was created with
// imagecreate (everything works fine with imagecreatetruecolor)
if ( "$old_r,$old_g,$old_b" != "$r,$g,$b")
$fill = imagecolorallocate( $im, $r, $g, $b );
switch($direction) {
case 'vertical':
imagefilledrectangle($im, 0, $i, $line_width, $i+$this->step, $fill);
break;
case 'horizontal':
imagefilledrectangle( $im, $i, 0, $i+$this->step, $line_width, $fill );
break;
case 'ellipse':
case 'ellipse2':
case 'circle':
case 'circle2':
imagefilledellipse ($im,$center_x, $center_y, ($line_numbers-$i)*$rh, ($line_numbers-$i)*$rw,$fill);
break;
case 'square':
case 'rectangle':
imagefilledrectangle ($im,$i*$width/$height,$i*$height/$width,$width-($i*$width/$height), $height-($i*$height/$width),$fill);
break;
case 'diamond':
imagefilledpolygon($im, array (
$width/2, $i*$rw-0.5*$height,
$i*$rh-0.5*$width, $height/2,
$width/2,1.5*$height-$i*$rw,
1.5*$width-$i*$rh, $height/2 ), 4, $fill);
break;
default:
}
}
}
// #ff00ff -> array(255,0,255) or #f0f -> array(255,0,255)
function hex2rgb($color) {
$color = str_replace('#','',$color);
$s = strlen($color) / 3;
$rgb[]=hexdec(str_repeat(substr($color,0,$s),2/$s));
$rgb[]=hexdec(str_repeat(substr($color,$s,$s),2/$s));
$rgb[]=hexdec(str_repeat(substr($color,2*$s,$s),2/$s));
return $rgb;
}
}
?>Gruß Matze.
