imagesetstyle

(PHP 4 >= 4.0.6, PHP 5)

imagesetstyle — Set the style for line drawing

Popis

bool imagesetstyle ( resource $image, array $style )

imagesetstyle() sets the style to be used by all line drawing functions (such as imageline() and imagepolygon()) when drawing with the special color IMG_COLOR_STYLED or lines of images with color IMG_COLOR_STYLEDBRUSHED.

Seznam parametrů

image: An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
style: An array of pixel colors. You can use the IMG_COLOR_TRANSPARENT constant to add a transparent pixel.

Návratové hodnoty

Vrací TRUE při úspěchu, FALSE při selhání.

Příklady

Following example script draws a dashed line from upper left to lower right corner of the canvas:

Příklad 809. imagesetstyle() example


<?php

header("Content-type: image/jpeg");

$im  = imagecreatetruecolor(100, 100);

$w   = imagecolorallocate($im, 255, 255, 255);

$red = imagecolorallocate($im, 255, 0, 0);



/* Draw a dashed line, 5 red pixels, 5 white pixels */

$style = array($red, $red, $red, $red, $red, $w, $w, $w, $w, $w);

imagesetstyle($im, $style);

imageline($im, 0, 0, 100, 100, IMG_COLOR_STYLED);



/* Draw a line of happy faces using imagesetbrush() with imagesetstyle */

$style = array($w, $w, $w, $w, $w, $w, $w, $w, $w, $w, $w, $w, $red);

imagesetstyle($im, $style);



$brush = imagecreatefrompng("http://www.libpng.org/pub/png/images/smile.happy.png");

$w2 = imagecolorallocate($brush, 255, 255, 255);

imagecolortransparent($brush, $w2);

imagesetbrush($im, $brush);

imageline($im, 100, 0, 0, 100, IMG_COLOR_STYLEDBRUSHED);



imagejpeg($im);

imagedestroy($im);

?>

Výše uvedený příklad vypíše něco jako:

Viz také

imagesetbrush()

imageline()

imagesetthickness

imagesetpixel

Last updated: Sat, 24 Mar 2007

add a note User Contributed Notes
imagesetstyle

Michael_Todd_335 at yahoo dot com
27-Jun-2007 09:40


Watch out! If you pass imagesetstyle() an empty array as the second argument, it will crash your server!

I was messing with it just earlier and accidentally did so, and the page took a good minute to process, when my Apache server came up with the good ol' Windows 'Send Error Report' window.

Cruz at FtUC dot net
15-Jan-2006 03:45


When lines drawn with imagesetstyle seem to produce a thin white line only, make sure antialiasing is disabled.



<?

  imageantialias($im, false);

  $style = array($gridxcolor, $gridxcolor, IMG_COLOR_TRANSPARENT, IMG_COLOR_TRANSPARENT);

  imagesetstyle($im, $style);

  imageline($im, $x, 0, $x, $ymax+5, IMG_COLOR_STYLED);

  imageantialias($im, true);

?>



Setstyle and Antialias don't go together.

zackbloom at gmail dot com
06-Dec-2005 02:44


Use this to set the style to any combination of pixels.

You can pass as many modifiers as you wish.

Use the format [num]r[red]g[green]b[blue].



For example:



$im=dashed($im,"4r255g0b0","2r0g255b0","5r0g0b255");

imageline($im, 0, 0, 600, 600, IMG_COLOR_STYLED);



function dashed($im){

$size = func_num_args();

for($i = 0; $i < $size; $i++){

$arg = func_get_arg($i);

if(!is_resource($arg)){

$r=substr($arg,strpos($arg,"r")+1,

strpos($arg,"g")-strpos($arg,"r")-1);

$g=substr($arg,strpos($arg,"g")+1,

strpos($arg,"b")-strpos($arg,"g")-1);

$b=substr($arg,strpos($arg,"b")+1,

strlen($arg)-strpos($arg,"b"));

$color = imagecolorallocate($im,$r,$g,$b);

$x = substr($arg,0,strpos($arg,"r"));

$vals[$i] = array_fill(0,$x,$color);

}

}

for($k=0;$k<count($vals)+1;$k++)

if(array_key_exists($k,$vals)) $prop=array_merge($prop,$vals[$k]);

imagesetstyle($im, $prop);

return $im;

}

yhoko at yhoko dot com
11-Aug-2004 06:24


When drawing lines that are >1px thick you'll have to setup the array corresponding to this fact (since there's no multi-array support for this function).



For example if the line's 3 pixels thick each 2nd color goes to the 2nd line, each 3rd color to the 3rd line and so on.

add a note

imagesetthickness

imagesetpixel

Last updated: Sat, 24 Mar 2007