PDF_setcolor

(PHP 4 >= 4.0.5, PECL pdflib >= 1.0.0)

PDF_setcolor — Set fill and stroke color

说明

bool PDF_setcolor ( resource $p , string $fstype , string $colorspace , float $c1 , float $c2 , float $c3 , float $c4 )

Sets the current color space and color. 成功时返回 TRUE ，或者在失败时返回 FALSE 。

用户评论:

[#1] cancausecancer at yahoo dot com [2011-01-14 16:39:36]

Here is a quick snippet to convert CMYK to RGB. It has better precision than a lot of other solutions that also don't factor in colour profiles.

<?php $cmyk = '10,20,100,31'; list($c, $m, $y, $k) = explode(',', $cmyk); # Gets the rgb as floats (cast via (int) if you want int ) $r = (1 - min(($c / 100) * (1 - $k /= 100) + 1 * $k, 1)) * 255; $g = (1 - min(($m / 100) * (1 - $k) + 1 * $k, 1)) * 255; $b = (1 - min(($y / 100) * (1 - $k) + 1 * $k, 1)) * 255; echo "$r $g $b\r\n"; # Converts the rgb to hex with leading 0's $r = str_pad(dechex($r), 2, '0', STR_PAD_LEFT); $g = str_pad(dechex($g), 2, '0', STR_PAD_LEFT); $b = str_pad(dechex($b), 2, '0', STR_PAD_LEFT); echo "hex: $r$g$b\r\n"; ?>

[#2] _meto ALT+q web.de [2004-05-08 09:03:21]

Damn, this took me some real long time! Maybe it's helpfull for those who even have no idea of color-Schemes like me ;)

If u want to generate PDF's for Print Offices u need to set all the colors in CMYK.

Here is a Function that will convert RGB to CMYK

<?php function hex2rgb($hex) { $color = str_replace('#','',$hex); $rgb = array('r' => hexdec(substr($color,0,2)), 'g' => hexdec(substr($color,2,2)), 'b' => hexdec(substr($color,4,2))); return $rgb; } function rgb2cmyk($var1,$g=0,$b=0) { if(is_array($var1)) { $r = $var1['r']; $g = $var1['g']; $b = $var1['b']; } else $r=$var1; $cyan = 255 - $r; $magenta = 255 - $g; $yellow = 255 - $b; $black = min($cyan, $magenta, $yellow); $cyan = @(($cyan - $black) / (255 - $black)) * 255; $magenta = @(($magenta - $black) / (255 - $black)) * 255; $yellow = @(($yellow - $black) / (255 - $black)) * 255; return array('c' => $cyan / 255, 'm' => $magenta / 255, 'y' => $yellow / 255, 'k' => $black / 255); } $color=rgb2cmyk(hex2rgb('#FF0000')); pdf_setcolor($pdf, "both", "cmyk", $color['c'], $color['m'], $color['y'], $color['k']); ?>

U can call it with parameters (r,g,b) or just an array(r,g,b) that contains these values.

Hope it works correct. All testing was fine.

[#3] enyo vel cora [2004-01-13 04:32:30]

This seems a little less complicated:

this is the color you want to use : 'FF11AA'

<?php pdf_setcolor ($pdf, 'both', 0xFF / 255, 0x11 / 255, 0xAA / 255); ?>

[#4] php at perfectweb dotcom [2003-04-29 16:22:40]

Here's a better implementation for setting HTML hexadecimal colors:

function pdf_setcolor_hex($hexcolor, $type = '')
{
    global $pdf;     ## match this to your pdf resource handle
   $color['r'] = hexdec(substr($hexcolor, 0, 2))/255;
    $color['g'] = hexdec(substr($hexcolor, 2, 2))/255;
    $color['b'] = hexdec(substr($hexcolor, 4, 2))/255;
   if ($type != 'fill' && $type != 'stroke')  $type = 'both';
   pdf_setcolor($pdf, $type, 'rgb', $color['r'], $color['g'], $color['b']);
}

Sample usage:
pdf_setcolor_hex('FFFFFF', 'fill');

-Derek

[#5] php at perfectweb dotcom [2003-04-29 00:59:33]

Here's a function for converting HTML hexadecimal colors to RGB decimals suitable for this function:

$color_hex = "FF0000";       ## whatever hex color you want
$color = convert_hexcolor_rgbdec($color_hex);
pdf_setcolor($pdf, 'fill', 'rgb', $color['r'], $color['g'], $color['b']);

function convert_hexcolor_rgbdec($color_hex)
{
   $color['r'] = hexdec(substr($color_hex, 0, 2))/255;
   $color['g'] = hexdec(substr($color_hex, 2, 2))/255;
   $color['b'] = hexdec(substr($color_hex, 4, 2))/255;
   return $color;
}

-Derek

[#6] maurice dot anglebert at free dot fr [2003-04-28 08:25:57]

[#7] psychosos at gmx dot at [2003-04-16 10:51:07]

If you want to change the font color you need to set type to "fill", not "stroke" ("both" also works, of course).

[#8] steven dot gould at NO_SPAM dot stevengould dot org [2001-12-21 11:44:25]

If you encounter errors of the form function 'PDF_setcolor' must not be called in 'path' scope this generally means that you've called the PDFLib functions in the wrong order. For example, the following would be *incorrect* because PDF_rect marks the beginning of the "path scope", and set_color must not be called in path scope:

<?php // THIS CODE WILL PRODUCE AN ERROR PDF_rect($pdf,0,0,$width,$height); PDF_setcolor($pdf,$red,$green,$blue); PDF_fill($pdf); <p>The correct order of function calls is as follows: <p>// Correct order of function calls PDF_setcolor($pdf,$red,$green,$blue); PDF_rect($pdf,0,0,$width,$height); PDF_fill($pdf); ?>