initial import

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+<?php
+
+/*
+    hicg -- Harmattan Icon/Color Generator
+    Copyright (C) 2011 Javier S. Pedro <maemo@javispedro.com>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+define('SVGNS', 'http://www.w3.org/2000/svg');
+
+define('COLOR_EXTRACT_RENDER_SIZE', 128);
+define('HARMATTAN_ICON_SIZE', 80);
+define('HARMATTAN_FOCAL_SIZE', 54);
+
+function svg2png($svg, $w, $h, $png)
+{
+	$output = array();
+	$exitcode = -1;
+	exec(sprintf("~/bin/qsvg %s %d %d %s", escapeshellarg($svg), $w, $h, escapeshellarg($png)),$output,$exitcode);
+	return $exitcode == 0;
+}
+
+function multiarray($d, $k, $n = 0)
+{
+	return array_fill(0, $k, $d == 1 ? $n : multiarray($d - 1, $k, $n));
+}
+
+function warn($s)
+{
+	global $warnings;
+	$warnings[] = $s;
+}
+
+function colfilter_none($c)
+{
+	return false;
+}
+
+function colfilter_pure($c)
+{
+	return ($c['red'] == 0 && $c['green'] == 0 && $c['blue'] == 0) ||
+		   ($c['red'] == 255 && $c['green'] == 255 && $c['blue'] == 255);
+}
+
+function colfilter_grey($c)
+{
+	return ($c['red'] == $c['green']) && ($c['green'] == $c['blue']);
+}
+
+function colfilter_grey5($c)
+{
+	$r = $c['red'] >> 3;
+	$g = $c['green'] >> 3;
+	$b = $c['blue'] >> 3;
+	return ($r == $g) && ($g == $b);
+}
+
+function domcolor_mean($img, $flt)
+{
+	$w = imagesx($img);
+	$h = imagesy($img);
+	$t = $w * $h;
+	$r = 0; $g = 0; $b = 0;
+	for ($y = 0; $y < $h; $y++) {
+		for ($x = 0; $x < $w; $x++) {
+			$c = imagecolorsforindex($img, imagecolorat($img, $x, $y));
+			if (call_user_func($flt, $c)) continue;
+			$r += $c['red'];
+			$g += $c['green'];
+			$b += $c['blue'];
+		}
+	}
+	$r /= $t; $g /= $t;	$b /= $t;
+	return array($r, $g, $b);
+}
+
+function domcolor_mode($img, $flt)
+{
+	$w = imagesx($img);
+	$h = imagesy($img);
+	$t = $w * $h;
+	$f = multiarray(3, 256, 0);
+	$max_c = false;
+	$max_f = 0;
+	for ($y = 0; $y < $h; $y++) {
+		for ($x = 0; $x < $w; $x++) {
+			$c = imagecolorsforindex($img, imagecolorat($img, $x, $y));
+			if (call_user_func($flt, $c)) continue;
+			$this_f = $f[$c['red']][$c['green']][$c['blue']] += 1;
+			if ($this_f > $max_f) {
+				$max_c = $c;
+				$max_f = $this_f;
+			}
+		}
+	}
+	if ($max_c)
+		return array($max_c['red'], $max_c['green'], $max_c['blue']);
+	else
+		return false;
+}
+
+$domalgos = array('mean', 'mode');
+$colfilters = array('none', 'pure', 'grey', 'grey5');
+
+function extract_dominant_color($svg, $algo = 'average', $filter = 'grey')
+{
+	global $domalgos, $colfilters;
+	$png = '/tmp/hicg-icon.png';
+	if (!in_array($algo, $domalgos)) {
+		return false;
+	}
+	if (!in_array($filter, $colfilters)) {
+		return false;
+	}
+	if (!svg2png($svg, COLOR_EXTRACT_RENDER_SIZE, COLOR_EXTRACT_RENDER_SIZE, $png)) {
+		return false;
+	}
+	$img = imagecreatefrompng($png);
+	if (!$img) {
+		return false;
+	}
+	$color = call_user_func('domcolor_'. $algo, $img, 'colfilter_'.$filter);
+	imagedestroy($img);
+	return $color;
+}
+
+function clip_color_value($c)
+{
+	if ($c < 0) return 0;
+	else if ($c > 255) return 255;
+	return $c;
+}
+
+function clip_color($c)
+{
+	return array_map('clip_color_value', $c);
+}
+
+function greyscale_color($c)
+{
+	return .299*$c[0] + .587*$c[1] + .114*$c[2];
+}
+
+function color2hex($c)
+{
+	return sprintf("%02x%02x%02x", $c[0], $c[1], $c[2]);
+}
+
+function get_disabled_color($c)
+{
+	/* Clear and desature a bit. */
+	$nc = array_map(create_function('$x', 'return $x + 90;'), $c);
+	$grey = greyscale_color($nc);
+	$nc = array_map(create_function('$x', 'return $x * 0.8 + ('.$grey.') * 0.2;'), $nc);
+	return clip_color($nc);
+}
+
+function get_pressed_color($c)
+{
+	/* Desaturate and darken. */
+	$grey = greyscale_color($c);
+	$nc = array_map(create_function('$x', 'return $x * 0.5 + ('.$grey.') * 0.5;'), $c);
+	$nc = array_map(create_function('$x', 'return $x - 40;'), $nc);
+
+	return clip_color($nc);
+}
+
+function get_icon_light_color($c)
+{
+	$nc = array_map(create_function('$x', 'return $x + 60;'), $c);
+	return clip_color($nc);
+}
+
+function get_icon_dark_color($c)
+{
+	$nc = array_map(create_function('$x', 'return $x - 50;'), $c);
+	return clip_color($nc);
+}
+
+function get_svg_attribute($node, $attrib)
+{
+	$v = $node->getAttributeNS(SVGNS, 'svg:' . $attrib);
+	if (empty($v)) {
+		$v = $node->getAttribute('svg:' . $attrib);
+		if (empty($v)) {
+			$v = $node->getAttribute($attrib);
+		}
+	}
+
+	return $v;
+}
+
+function calc_scale_ratios($w, $h, &$s, &$tx, &$ty)
+{
+	if ($w > $h) {
+		$s = HARMATTAN_FOCAL_SIZE / $w;
+		$sw = HARMATTAN_FOCAL_SIZE;
+		$sh = $s * $h;
+	} else {
+		$s = HARMATTAN_FOCAL_SIZE / $h;
+		$sw = $s * $w;
+		$sh = HARMATTAN_FOCAL_SIZE;
+	}
+	$tx = HARMATTAN_ICON_SIZE / 2 - $sw / 2;
+	$ty = HARMATTAN_ICON_SIZE / 2 - $sh / 2;
+}
+
+function make_icon($src, $template, $dst, $color)
+{
+	$srcDoc = new DOMDocument();
+	$srcDoc->load($src);
+	$doc = new DOMDocument();
+	$doc->load($template);
+
+	/* Get scaling ratios from source SVG. */
+	$srcNode = $srcDoc->documentElement;
+	$w = intval(get_svg_attribute($srcNode, 'width'));
+	$h = intval(get_svg_attribute($srcNode, 'height'));
+	calc_scale_ratios($w, $h, $s, $tx, $ty);
+
+	/* Fix gradient colors. */
+	$grd = $doc->getElementsByTagName('stop');
+	$grd->item(0)->setAttribute('style', 'stop-color:#' . color2hex(get_icon_light_color($color)) . ';stop-opacity:1');
+	$grd->item(1)->setAttribute('style', 'stop-color:#' . color2hex(get_icon_dark_color($color)) . ';stop-opacity:1');
+
+	/* Create the scaling & centering transform. */
+	$g = $doc->createElement('g');
+	$g->setAttribute('transform', "translate($tx, $ty) scale($s)");
+
+	foreach ($srcNode->childNodes as $node) {
+		$n = $doc->importNode($node, TRUE);
+		$g->appendChild($n);
+	}
+	
+	$doc->documentElement->appendChild($g);
+
+	$doc->save($dst);
+}
+
+function make_png($src, $dst)
+{
+	if (!svg2png($src, HARMATTAN_ICON_SIZE, HARMATTAN_ICON_SIZE, $dst)) {
+		warn("I failed to generate a 80x80 PNG.");
+	}
+}
+
+$warnings = array();
+
+if (@isset($_POST['send'])) {
+	$prefix = './files/' . uniqid() . '_';
+	$srcfile = $prefix . 'src.svg';
+	if (!move_uploaded_file($_FILES['iconfile']['tmp_name'], $srcfile)) {
+		die('Upload failed.');
+	}
+	$domalgo = $_POST['domalgo'];
+	$colfilter = $_POST['colfilter'];
+	$iconfile = $prefix . 'icon.svg';
+	$pngfile = $prefix . 'icon.png';
+
+	$domcolor = extract_dominant_color($srcfile, $domalgo, $colfilter);
+	if (!$domcolor) {
+		warn("I failed to get a dominant color. Your icon might be too greyish.");
+		$domcolor = array(0, 0, 0);
+		$discolor = array(0, 0, 0);
+		$prscolor = array(0, 0, 0);
+	} else {
+		$discolor = get_disabled_color($domcolor);
+		$prscolor = get_pressed_color($domcolor);
+	}
+
+	make_icon($srcfile, 'template.svg', $iconfile, $domcolor);
+	make_png($iconfile, $pngfile);
+
+	$srcurl = $srcfile;
+	$iconurl = $iconfile;
+	$pngurl = $pngfile;
+} else {
+	/* Load some sample data. */
+	$srcfile = 'samplesrc.svg';
+	$domalgo = 'mode';
+	$colfilter = 'grey5';
+	$iconfile = 'sampleicon.svg';
+	$pngfile = 'sampleicon.png';
+
+	$domcolor = extract_dominant_color($srcfile, $domalgo, $colfilter);
+	$discolor = get_disabled_color($domcolor);
+	$prscolor = get_pressed_color($domcolor);
+
+	/* This should not get into production. ;) */
+	make_icon($srcfile, 'template.svg', $iconfile, $domcolor);
+	make_png($iconfile, $pngfile);
+
+	$srcurl = $srcfile;
+	$iconurl = $iconfile;
+	$pngurl = $pngfile;
+}
+
+echo '<?xml version="1.0" encoding="utf-8" ?>';
+?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+	  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Harmattan Icon Generator</title>
+<link rel="stylesheet" type="text/css" href="style.css" />
+</head>
+<body>
+<?php if (!empty($warnings)): ?>
+<h1>Warnings</h1>
+<?php foreach ($warnings as $w): ?>
+	<p><strong>Warning:</strong> <?php echo $w; ?></p>
+<?php endforeach; ?>
+<?php endif; ?>
+<h1>Upload your icon</h1>
+<form enctype="multipart/form-data" action="." method="post">
+	<fieldset>
+		<legend>Your application's current icon file</legend>
+		<label>SVG icon file:
+			<input type="file" name="iconfile" size="60" />
+		</label>
+	</fieldset>
+	<fieldset>
+		<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>
+	</fieldset>
+	<fieldset>
+		<legend>Colors to ignore</legend>
+		<label><input type="radio" name="colfilter" value="none" />None</label>
+		<label><input type="radio" name="colfilter" value="pure" />Pure white/blacks</label>
+		<label><input type="radio" name="colfilter" value="grey" checked="true" />Pure greys</label>
+		<label><input type="radio" name="colfilter" value="grey5" />Greys at 5bpp per channel</label>
+	</fieldset>
+	<fieldset>
+		<legend>Drop shadow</legend>
+		<label><input type="radio" name="dropshadow" value="none" />None</label>
+		<label><input type="radio" name="dropshadow" value="std" />Standard</label>
+	</fieldset>
+	<div class="buttons">
+		<input type="submit" name="send" value="Submit" />
+	</div>
+</form>
+<h1>Results</h1>
+<div id="uploaded">
+	<p>You uploaded:</p>
+	<object type="image/svg+xml" data="<?php echo $srcurl; ?>" width="200" height="200"></object>
+</div>
+<div id="results">
+	<div id="yourcolor">
+		<p>Your icon's dominant color is <span class="color">#<?php echo color2hex($domcolor); ?></span></p>
+		<div class="color" style="background-color: #<?php echo color2hex($domcolor); ?>;"></div>
+	</div>
+	<div id="discolor">
+		<p>A suggested disabled color is <span class="color">#<?php echo color2hex($discolor); ?></span></p>
+		<div class="color" style="background-color: #<?php echo color2hex($discolor); ?>;"></div>
+	</div>
+	<div id="prscolor">
+		<p>A suggested pressed color is <span class="color">#<?php echo color2hex($prscolor); ?></span></p>
+		<div class="color" style="background-color: #<?php echo color2hex($prscolor); ?>;"></div>
+	</div>
+	<div id="youricon">
+		<p>Harmattan style icon:</p>
+		<div>
+			<div class="icon">
+				<object type="image/svg+xml" data="<?php echo $iconurl; ?>" width="80" height="80"></object>
+				<p>YourApp</p>
+			</div>
+		</div>
+	</div>
+	<p>Download <a href="<?php echo $iconurl; ?>">SVG file</a>. Or a 80x80 <a href="<?php echo $pngurl; ?>">PNG file</a>.</p>
+</div>
+<h1>Suggested reading</h1>
+<ul>
+	<li><a href="http://www.developer.nokia.com/swipe/ux/pages/Colour.html">Nokia N9 UX Color Guidelines</a></li>
+	<li><a href="http://www.developer.nokia.com/swipe/ux/pages/Icons.html">Nokia N9 UX Icon Guidelines</a></li>
+</ul>
+</body>
+</html>