custom dominant color support

1 files changed, 28 insertions, 1 deletions

diff --git a/index.php b/index.php
index 4c1ee55..3909f9b 100644
--- a/index.php
+++ b/index.php
@@ -112,7 +112,33 @@ function domcolor_mode($img, $flt)
 		return false;
 }
 
-$domalgos = array('mean', 'mode');
+
+function domcolor_custom($img, $flt)
+{
+	$color = $_POST['customcolor'];
+
+	/* Remove prefixing '#' if present. */
+	if ($color[0] == '#')	$color = substr($color, 1);
+
+	if (strlen($color) == 6) {
+		/* Handle rrggbb format. */
+		$r = $color[0].$color[1];
+		$g = $color[2].$color[3];
+		$b = $color[4].$color[5];
+	} elseif (strlen($color) == 3) {
+		/* Handle rgb format. */
+		$r = $color[0].$color[0];
+		$g = $color[1].$color[1];
+		$b = $color[2].$color[2];
+	} else {
+		/* Unknown format. */
+		return false;
+	}
+
+	return array(hexdec($r), hexdec($g), hexdec($b));
+}
+
+$domalgos = array('mean', 'mode', 'custom');
 $colfilters = array('none', 'pure', 'grey', 'grey5');
 
 function extract_dominant_color($svg, $algo = 'average', $filter = 'grey')
@@ -374,6 +400,7 @@ echo '<?xml version="1.0" encoding="utf-8" ?>';
 		<legend>Algorithm for dominant color extraction</legend>
 		<label><input type="radio" name="domalgo" value="mean" />Mean / Average</label>
 		<label><input type="radio" name="domalgo" value="mode" checked="true" />Mode</label>
+		<label><input type="radio" name="domalgo" value="custom" checked="true" />Custom: <input type="text" name="customcolor" /></label>
 	</fieldset>
 	<fieldset>
 		<legend>Colors to ignore</legend>