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gerrit-public.fairphone.software / platform / external / ImageMagick / 06f63f2865009003d39425e264f6066d7f0b8875 / . / www / api / color.html
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cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame^]1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
2 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
3<html version="-//W3C//DTD XHTML 1.1//EN"
4 xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"
5 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
6 xsi:schemaLocation="http://www.w3.org/1999/xhtml
7 http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd">
8<head>
9 <meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
10 <meta name="google-site-verification" content="MxsMq6bdLOx0KSuz1MY6yG9ZTIJ7_7DVRfl5NCAT5Yg"/>
cristyffb69ed2010-12-25 00:06:48 +0000[diff] [blame]11 <title>ImageMagick: MagickCore, C API for ImageMagick: Count the Colors in an Image</title>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]12 <meta http-equiv="content-language" content="en-US"/>
13 <meta http-equiv="content-type" content="text/html; charset=utf-8"/>
14 <meta http-equiv="reply-to" content="magick-users@imagemagick.org"/>
15 <meta name="application-name" content="ImageMagick"/>
16 <meta name="description" content="Use ImageMagick to convert, edit, or compose bitmap images in a variety of formats. In addition resize, rotate, shear, distort and transform images automagically."/>
17 <meta name="application-url" content="http://www.imagemagick.org"/>
18 <meta name="generator" content="PHP"/>
19 <meta name="keywords" content="magickcore, c, api, for, imagemagick:, count, the, colors, in, an, image, ImageMagick, PerlMagick, image processing, OpenMP, software development library, image, photo, software, Magick++, MagickWand"/>
20 <meta name="rating" content="GENERAL"/>
21 <meta name="robots" content="INDEX, FOLLOW"/>
22 <meta name="generator" content="ImageMagick Studio LLC"/>
23 <meta name="author" content="ImageMagick Studio LLC"/>
24 <meta name="revisit-after" content="2 DAYS"/>
25 <meta name="resource-type" content="document"/>
26 <meta name="copyright" content="Copyright (c) 1999-2012 ImageMagick Studio LLC"/>
27 <meta name="distribution" content="Global"/>
cristy99084a42012-08-04 16:51:41 +0000[diff] [blame]28 <link rel="icon" href="../../../../../../../../../../../../../../../../../../../../../../../../../../../../../../../../images/wand.png"/>
29 <link rel="shortcut icon" href="../../../../../../../../../../../../../../../../../../../../../../../../../../../../../../../../images/wand.ico" type="images/x-icon"/>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame^]30 <link rel="canonical" href="http://www.imagemagick.org" />
31 <link rel="meta" type="application/rdf+xml" title="ICI" href="http://imagemagick.org/ici.rdf"/>
32 <!-- Add jQuery library -->
33 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.min.js"></script>
34
35 <!-- Optionaly include easing and/or mousewheel plugins -->
36 <script type="text/javascript" src="http://www.imagemagick.org/fancybox/jquery.easing-1.3.pack.js"></script>
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cristy20398432011-08-11 01:31:50 +0000[diff] [blame]239<h1>Module color Methods</h1>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]240<p class="navigation-index">[<a href="color.html#GetColorInfoList">GetColorInfoList</a> &bull; <a href="color.html#GetColorList">GetColorList</a> &bull; <a href="color.html#ListColorInfo">ListColorInfo</a> &bull; <a href="color.html#LoadColorList">LoadColorList</a> &bull; <a href="color.html#QueryColorCompliance">QueryColorCompliance</a> &bull; <a href="color.html#QueryColorDatabase">QueryColorDatabase</a> &bull; <a href="color.html#QueryColorname">QueryColorname</a> &bull; <a href="color.html#QueryMagickColorCompliance">QueryMagickColorCompliance</a> &bull; <a href="color.html#QueryMagickColor">QueryMagickColor</a> &bull; <a href="color.html#QueryMagickColorname">QueryMagickColorname</a>]</p>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]241
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]242<h2><a href="http://www.imagemagick.org/api/MagickCore/color_8c.html" id="GetColorInfoList">GetColorInfoList</a></h2>
243<div class="doc-section">
244
245<p>GetColorInfoList() returns any colors that match the specified pattern.</p>
246
247<p>The format of the GetColorInfoList function is:</p>
248
249<pre class="text">
250 const ColorInfo **GetColorInfoList(const char *pattern,
251 size_t *number_colors,ExceptionInfo *exception)
252</pre>
253
254<p>A description of each parameter follows:</p>
255
256<h5>pattern</h5>
257<p>Specifies a pointer to a text string containing a pattern.</p>
258
259<h5>number_colors</h5>
260<p>This integer returns the number of colors in the list.</p>
261
262<h5>exception</h5>
263<p>return any errors or warnings in this structure.</p>
264
265 </div>
266<h2><a href="http://www.imagemagick.org/api/MagickCore/color_8c.html" id="GetColorList">GetColorList</a></h2>
267<div class="doc-section">
268
269<p>GetColorList() returns any colors that match the specified pattern.</p>
270
271<p>The format of the GetColorList function is:</p>
272
273<pre class="text">
274 char **GetColorList(const char *pattern,size_t *number_colors,
275 ExceptionInfo *exception)
276</pre>
277
278<p>A description of each parameter follows:</p>
279
280<h5>pattern</h5>
281<p>Specifies a pointer to a text string containing a pattern.</p>
282
283<h5>number_colors</h5>
284<p>This integer returns the number of colors in the list.</p>
285
286<h5>exception</h5>
287<p>return any errors or warnings in this structure.</p>
288
289 </div>
290<h2><a href="http://www.imagemagick.org/api/MagickCore/color_8c.html" id="ListColorInfo">ListColorInfo</a></h2>
291<div class="doc-section">
292
293<p>ListColorInfo() lists color names to the specified file. Color names are a convenience. Rather than defining a color by its red, green, and blue intensities just use a color name such as white, blue, or yellow.</p>
294
295<p>The format of the ListColorInfo method is:</p>
296
297<pre class="code">
298 MagickBooleanType ListColorInfo(FILE *file,ExceptionInfo *exception)
299</pre>
300
301<p>A description of each parameter follows.</p>
302
303<h5>file</h5>
304<p>List color names to this file handle.</p>
305
306<h5>exception</h5>
307<p>return any errors or warnings in this structure.</p>
308
309 </div>
310<h2><a href="http://www.imagemagick.org/api/MagickCore/color_8c.html" id="LoadColorList">LoadColorList</a></h2>
311<div class="doc-section">
312
313<p>LoadColorList() loads one or more color configuration file which provides a mapping between color attributes and a color name.</p>
314
315<p>The format of the LoadColorLists method is:</p>
316
317<pre class="code">
318 MagickBooleanType LoadColorLists(const char *filename,
319 ExceptionInfo *exception)
320</pre>
321
322<p>A description of each parameter follows:</p>
323
324<h5>filename</h5>
325<p>the font file name.</p>
326
327<h5>exception</h5>
328<p>return any errors or warnings in this structure.</p>
329
330 </div>
cristyeed6cb62012-01-28 19:38:34 +0000[diff] [blame]331<h2><a href="http://www.imagemagick.org/api/MagickCore/color_8c.html" id="QueryColorCompliance">QueryColorCompliance</a></h2>
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]332<div class="doc-section">
333
cristyeed6cb62012-01-28 19:38:34 +0000[diff] [blame]334<p>QueryColorCompliance() returns the red, green, blue, and opacity intensities for a given color name.</p>
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]335
cristyeed6cb62012-01-28 19:38:34 +0000[diff] [blame]336<p>The format of the QueryColorCompliance method is:</p>
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]337
338<pre class="code">
cristyeed6cb62012-01-28 19:38:34 +0000[diff] [blame]339 MagickBooleanType QueryColorCompliance(const char *name,
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]340 const ComplianceType compliance,PixelPacket *color,
341 ExceptionInfo *exception)
342</pre>
343
344<p>A description of each parameter follows:</p>
345
346<h5>name</h5>
347<p>the color name (e.g. white, blue, yellow).</p>
348
349<h5>compliance</h5>
350<p>Adhere to this color standard: SVG, X11, or XPM.</p>
351
352<h5>color</h5>
353<p>the red, green, blue, and opacity intensities values of the named color in this structure.</p>
354
355<h5>exception</h5>
356<p>return any errors or warnings in this structure.</p>
357
358 </div>
359<h2><a href="http://www.imagemagick.org/api/MagickCore/color_8c.html" id="QueryColorDatabase">QueryColorDatabase</a></h2>
360<div class="doc-section">
361
362<p>QueryColorDatabase() returns the red, green, blue, and opacity intensities for a given color name.</p>
363
364<p>The format of the QueryColorDatabase method is:</p>
365
366<pre class="code">
367 MagickBooleanType QueryColorDatabase(const char *name,PixelPacket *color,
368 ExceptionInfo *exception)
369</pre>
370
371<p>A description of each parameter follows:</p>
372
373<h5>name</h5>
374<p>the color name (e.g. white, blue, yellow).</p>
375
376<h5>color</h5>
377<p>the red, green, blue, and opacity intensities values of the named color in this structure.</p>
378
379<h5>exception</h5>
380<p>return any errors or warnings in this structure.</p>
381
382 </div>
383<h2><a href="http://www.imagemagick.org/api/MagickCore/color_8c.html" id="QueryColorname">QueryColorname</a></h2>
384<div class="doc-section">
385
386<p>QueryColorname() returns a named color for the given color intensity. If an exact match is not found, a rgb() color is returned instead.</p>
387
388<p>The format of the QueryColorname method is:</p>
389
390<pre class="code">
391 MagickBooleanType QueryColorname(const Image *image,
392 const PixelPacket *color,const ComplianceType compliance,char *name,
393 ExceptionInfo *exception)
394</pre>
395
396<p>A description of each parameter follows.</p>
397
398<h5>image</h5>
399<p>the image.</p>
400
401<h5>color</h5>
402<p>the color intensities.</p>
403
404<h5>compliance</h5>
405<p>Adhere to this color standard: SVG, X11, or XPM.</p>
406
407<h5>name</h5>
408<p>Return the color name or hex value.</p>
409
410<h5>exception</h5>
411<p>return any errors or warnings in this structure.</p>
412
413 </div>
414<h2><a href="http://www.imagemagick.org/api/MagickCore/color_8c.html" id="QueryMagickColorCompliance">QueryMagickColorCompliance</a></h2>
415<div class="doc-section">
416
417<p>QueryMagickColorCompliance() returns the red, green, blue, and opacity intensities for a given color name and standards compliance.</p>
418
419<p>The format of the QueryMagickColor method is:</p>
420
421<pre class="code">
cristyeed6cb62012-01-28 19:38:34 +0000[diff] [blame]422 MagickBooleanType QueryMagickColorCompilence(const char *name,
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]423 const ComplianceType compliance,MagickPixelPacket *color,
424 ExceptionInfo *exception)
425</pre>
426
427<p>A description of each parameter follows:</p>
428
429<h5>name</h5>
430<p>the color name (e.g. white, blue, yellow).</p>
431
432<h5>compliance</h5>
433<p>Adhere to this color standard: SVG, X11, or XPM.</p>
434
435<h5>color</h5>
436<p>the red, green, blue, and opacity intensities values of the named color in this structure.</p>
437
438<h5>exception</h5>
439<p>return any errors or warnings in this structure.</p>
440
441 </div>
442<h2><a href="http://www.imagemagick.org/api/MagickCore/color_8c.html" id="QueryMagickColor">QueryMagickColor</a></h2>
443<div class="doc-section">
444
445<p>QueryMagickColor() returns the red, green, blue, and opacity intensities for a given color name.</p>
446
447<p>The format of the QueryMagickColor method is:</p>
448
449<pre class="code">
450 MagickBooleanType QueryMagickColor(const char *name,
451 MagickPixelPacket *color,ExceptionInfo *exception)
452</pre>
453
454<p>A description of each parameter follows:</p>
455
456<h5>name</h5>
457<p>the color name (e.g. white, blue, yellow).</p>
458
459<h5>color</h5>
460<p>the red, green, blue, and opacity intensities values of the named color in this structure.</p>
461
462<h5>exception</h5>
463<p>return any errors or warnings in this structure.</p>
464
465 </div>
466<h2><a href="http://www.imagemagick.org/api/MagickCore/color_8c.html" id="QueryMagickColorname">QueryMagickColorname</a></h2>
467<div class="doc-section">
468
469<p>QueryMagickColorname() returns a named color for the given color intensity. If an exact match is not found, a hex value is returned instead. For example an intensity of rgb:(0,0,0) returns black whereas rgb:(223,223,223) returns #dfdfdf.</p>
470
471<p>The format of the QueryMagickColorname method is:</p>
472
473<pre class="code">
474 MagickBooleanType QueryMagickColorname(const Image *image,
475 const PixelPacket *color,const ComplianceType compliance,char *name,
476 ExceptionInfo *exception)
477</pre>
478
479<p>A description of each parameter follows.</p>
480
481<h5>image</h5>
482<p>the image.</p>
483
484<h5>color</h5>
485<p>the color intensities.</p>
486
487<h5>Compliance</h5>
488<p>Adhere to this color standard: SVG, X11, or XPM.</p>
489
490<h5>name</h5>
491<p>Return the color name or hex value.</p>
492
493<h5>exception</h5>
494<p>return any errors or warnings in this structure.</p>
495
496 </div>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame^]497
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