color/starter_color
Demonstrate the basic use of supported color spaces.
Apply the following color spaces to text and vector graphics: gray, rgb, cmyk, iccbasedgray/rgb/cmyk, spot, lab, pattern, and shadings.
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/* $Id: starter_color.php,v 1.2 2012/05/03 14:00:39 stm Exp $
* Starter color:
* Demonstrate the basic use of supported color spaces
*
* Apply the following color spaces to text and vector graphics:
* - gray
* - rgb
* - cmyk
* - iccbasedgray/rgb/cmyk
* - spot
* - lab
* - pattern
* - shadings
*
* Required software: PDFlib/PDFlib+PDI/PPS 7
* Required data: none
*/
/* This is where the data files are. Adjust as necessary. */
$searchpath = dirname(dirname(dirname(__FILE__)))."/input";
$outfile = "";
$title = "Starter Color";
$y = 800; $x = 50; $xoffset1=80; $xoffset2 = 100; $yoffset = 70; $r = 30;
try {
$p = new PDFlib();
$p->set_parameter("SearchPath", $searchpath);
/* This means we must check return values of load_font() etc. */
$p->set_parameter("errorpolicy", "return");
$p->set_parameter("textformat", "utf8");
if ($p->begin_document($outfile, "") == 0)
throw new Exception("Error: " . $p->get_errmsg());
$p->set_info("Creator", "PDFlib Cookbook");
$p->set_info("Title", $title );
/* Load the font */
$font = $p->load_font("Helvetica", "unicode", "");
if ($font == 0)
throw new Exception("Error: " . $p->get_errmsg());
/* Start the page */
$p->begin_page_ext(0, 0, "width=a4.width height=a4.height");
$p->setfont($font, 14);
/* -------------------------------------------------------------------
* Use default colors
*
* If no special color is set the default values will be used. The
* default values are restored at the beginning of the page.
* 0=black in the Gray color space is the default fill and stroke
* color in many cases, as shown in our sample.
* -------------------------------------------------------------------
*/
/* Fill a circle with the default black fill color */
$p->circle($x, $y-=$yoffset, $r);
$p->fill();
/* Output text with default black fill color */
$p->fit_textline("Circle and text filled with default color {gray 0}",
$x+$xoffset2, $y, "");
$p->fit_textline("1.", $x+$xoffset1, $y, "");
/* -------------------------------------------------------------------
* Use the Gray color space
*
* Gray color is defined by Gray values between 0=black and 1=white.
* -------------------------------------------------------------------
*/
/* Using setcolor(), set the current fill color to a light gray
* represented by (0.5, 0, 0, 0) which defines 50% gray. Since gray
* colors are defined by only one value, the last three function
* parameters must be set to 0.
*/
$p->setcolor("fill", "gray", 0.5, 0, 0, 0);
/* Fill a circle with the current fill color defined above */
$p->circle($x, $y-=$yoffset, $r);
$p->fill();
/* Output text with the current fill color */
$p->fit_textline("Circle and text filled with {gray 0.5}",
$x+$xoffset2, $y, "");
/* Alternatively, you can set the fill color in the call to
* fit_textline() using the "fillcolor" option. This case applies the
* fill color just the single function call. The current fill color
* won't be affected.
*/
$p->fit_textline("2.", $x+$xoffset1, $y, "fillcolor={gray 0.5}");
/* ---------------------------------------------------------------------
* Use the RGB color space
*
* RGB color is defined by RGB triples, i.e. three values between 0 and
* 1 specifying the percentage of red, green, and blue.
* (0, 0, 0) is black and (1, 1, 1) is white. The commonly used RGB
* color values in the range 0 to 255 must be divided by 255 in order to
* scale them to the range 0 to 1 as required by PDFlib.
* ---------------------------------------------------------------------
*/
/* Use setcolor() to set the fill color to a grass-green
* represented by (0.1, 0.95, 0.3, 0) which defines 10% red, 95% green,
* 30% blue. Since RGB colors are defined by only three values, the last
* function parameter must be set to 0.
*/
$p->setcolor("fill", "rgb", 0.1, 0.95, 0.3, 0);
/* Draw a circle with the current fill color defined above */
$p->circle($x, $y-=$yoffset, $r);
$p->fill();
/* Output a text line with the RGB fill color defined above */
$p->fit_textline("Circle and text filled with {rgb 0.1 0.95 0.3}",
$x+$xoffset2, $y, "");
/* Alternatively, you can set the fill color in the call to
* fit_textline() using the "fillcolor" option. This case applies the
* fill color just the single function call. The current fill color
* won't be affected.
*/
$p->fit_textline("3.", $x+$xoffset1, $y, "fillcolor={rgb 0.1 0.95 0.3}");
/* --------------------------------------------------------------------
* Use the CMYK color space
*
* CMYK color is defined by four CMYK values between 0 = no color and
* 1 = full color representing cyan, magenta, yellow, and black values;
* (0, 0, 0, 0) is white and (0, 0, 0, 1) is black.
* --------------------------------------------------------------------
*/
/* Use setcolor() to set the current fill color to a pale
* orange, represented by (0.1, 0.7, 0.7, 0.1) which defines 10% Cyan,
* 70% Magenta, 70% Yellow, and 10% Black.
*/
$p->setcolor("fill", "cmyk", 0.1, 0.7, 0.7, 0.1);
/* Fill a circle with the current fill color defined above */
$p->circle($x, $y-=$yoffset, $r);
$p->fill();
/* Output a text line with the CMYK fill color defined above */
$p->fit_textline("Circle and text filled with" .
" {cmyk 0.1 0.7 0.7 0.1}", $x+$xoffset2, $y, "");
/* Alternatively, you can set the fill color in the call to
* fit_textline() using the "fillcolor" option. This case applies the
* fill color just the single function call. The current fill color
* won't be affected.
*/
$p->fit_textline("4.", $x+$xoffset1, $y, "fillcolor={cmyk 0.1 0.7 0.7 0.1}");
/* --------------------------------------------------------------------
* Use a Lab color
*
* Device-independent color in the CIE L*a*b* color space is specified
* by a luminance value in the range 0 to 100 and two color values in
* the range -127 to 128. The first value contains the green-red axis,
* while the second value contains the blue-yellow axis.
* --------------------------------------------------------------------
*/
/* Set the current fill color to a loud blue, represented by
* (100, -127, -127, 0). Since Lab colors are defined by only three
* values, the last function parameter must be set to 0.
*/
$p->setcolor("fill", "lab", 100, -127, -127, 0);
/* Fill a circle with the fill color defined above */
$p->circle($x, $y-=$yoffset, $r);
$p->fill();
/* Output a text line with the Lab fill color defined above */
$p->fit_textline("Circle and text filled with {lab 100 -127 -127}",
$x+$xoffset2, $y, "");
/* Alternatively, you can set the fill color in the call to
* fit_textline() using the "fillcolor" option. This case applies the
* fill color just the single function call. The current fill color
* won't be affected.
*/
$p->fit_textline("5.", $x+$xoffset1, $y, "fillcolor={lab 100 -127 -127}");
/* ---------------------------------------------------------------
* Use an ICC based color
*
* ICC-based colors are specified with the help of an ICC profile.
* ---------------------------------------------------------------
*/
/* Load the sRGB profile. sRGB is guaranteed to be always available */
$icchandle = $p->load_iccprofile("sRGB", "usage=iccbased");
/* Set the sRGB profile. (Accordingly, you can use
* "setcolor:iccprofilergb" or "setcolor:iccprofilegray" with an
* appropriate profile)
*/
$p->set_value("setcolor:iccprofilergb", $icchandle);
/* Use setcolor() with the "iccbasedrgb" color space to set the current
* fill and stroke color to a grass-green, represented
* by the RGB color values (0.1 0.95 0.3 0) which define 10% Red,
* 95% Green, and 30% Blue. Since iccbasedrgb colors are defined by only
* three values, the last function parameter must be set to 0.
*/
$p->setcolor("fill", "iccbasedrgb", 0.1, 0.95, 0.3, 0);
/* Fill a circle with the ICC based RGB fill color defined above */
$p->circle($x, $y-=$yoffset, $r);
$p->fill();
/* Output a text line with the ICC based RGB fill color defined above */
$p->fit_textline("Circle and text filled with {iccbasedrgb 0.1 0.95 0.3}",
$x+$xoffset2, $y, "");
/* Alternatively, you can set the fill color in the call to
* fit_textline() using the "fillcolor" option. This case applies the
* fill color just the single function call. The current fill color
* won't be affected.
*/
$p->fit_textline("6.", $x+$xoffset1, $y,
"fillcolor={iccbasedrgb 0.1 0.95 0.3}");
/* --------------------------------------------------------------------
* Use a spot color
*
* Spot color (separation color space) is a predefined or arbitrarily
* named custom color with an alternate representation in one of the
* other color spaces above; this is generally used for preparing
* documents which are intended to be printed on an offset printing
* machine with one or more custom colors. The tint value (percentage)
* ranges from 0 = no color to 1 = maximum intensity of the spot color.
* --------------------------------------------------------------------
*/
/* Define the spot color "PANTONE 281 U" from the builtin color
* library PANTONE
*/
$spot = $p->makespotcolor("PANTONE 281 U");
/* Set the spot color "PANTONE 281 U" with a tint value of 1 (=100%)
* and output some text. Since spot colors are defined by only two
* values, the last two function parameters must be set to 0.
*/
$p->setcolor("fill", "spot", $spot, 1.0, 0, 0);
/* Fill a circle with the ICC based RGB fill color defined above */
$p->circle($x, $y-=$yoffset, $r);
$p->fill();
$p->fit_textline("Circle and text filled with " .
"{spotname {PANTONE 281 U} 1}", $x+$xoffset2, $y, "");
/* Alternatively, you can set the fill color in the call to
* fit_textline() using the "fillcolor" option. This case applies the
* fill color just the single function call. The current fill color
* won't be affected.
*/
$p->fit_textline("7.", $x+$xoffset1, $y,
"fillcolor={spotname {PANTONE 281 U} 1}");
/* or */
$p->fit_textline("7.", $x+$xoffset1, $y, "fillcolor={spot " . $spot . " 1}");
/* ----------------------------------------------------------
* For using the Pattern color space, see the Cookbook topics
* graphics/fill_pattern and images/background_pattern.
* ----------------------------------------------------------
*/
/* ---------------------------------------------------------
* For using the Shading color space, see the Cookbook topic
* color/color_gradient.
* ---------------------------------------------------------
*/
$p->end_page_ext("");
$p->end_document("");
$buf = $p->get_buffer();
$len = strlen($buf);
header("Content-type: application/pdf");
header("Content-Length: $len");
header("Content-Disposition: inline; filename=starter_color.pdf");
print $buf;
} catch (PDFlibException $e) {
die("PDFlib exception occurred:\n".
"[" . $e->get_errnum() . "] " . $e->get_apiname() .
": " . $e->get_errmsg() . "\n");
} catch (Exception $e) {
die($e->getMessage());
}
$p=0;
?>