/**
Returns the mapping of hex strings to arrays of color words
@access static
@return Array An array of HexString => ColorWords[]
*/
function getHexToWordsMap ()
{
$hexToWordMap = array();
$wordToHexMap = ColorMap::getWordToHexMap();
foreach ($wordToHexMap as $word => $hex)
$hexToWordMap[$hex][] = $word;
return $hexToWordMap;
}
function toRGB($color)
{
$named = ColorMap::wordToHex($color);
if ($named) {
$color = $named;
}
$color = str_replace('#', '', $color);
$rgb = array();
foreach (range(0, 2) as $i) {
array_push($rgb, hexdec(substr($color, $i * 2, 2)));
}
return $rgb;
}
public function Draw($aTitle, $aStart, $aEnd, $n = 64, $aReverse = false, $addColorNames = false)
{
// Setup to draw colormap with names platoe colors
$lmarg = ColorMapDriver::LMARG;
// left margin
$rmarg = ColorMapDriver::RMARG;
// right margin
$width = ColorMapDriver::WIDTH;
// Overall image width
// Module height
$mh = ColorMapDriver::MODHEIGHT;
// Step between each map
$ymarg = $mh + ColorMapDriver::MAPMARG;
if ($addColorNames) {
$ymarg += 50;
}
// Start position
$xs = $lmarg;
$ys = ColorMapDriver::YSTART;
// Setup a basic canvas graph
$height = ($aEnd - $aStart + 1) * $ymarg + 50;
$graph = new CanvasGraph($width, $height);
$graph->img->SetColor('darkgray');
$graph->img->Rectangle(0, 0, $width - 1, $height - 1);
$t = new Text($aTitle, $width / 2, 5);
$t->SetAlign('center', 'top');
$t->SetFont(FF_ARIAL, FS_BOLD, 14);
$t->Stroke($graph->img);
// Instantiate a colormap
$cm = new ColorMap();
$cm->InitRGB($graph->img->rgb);
for ($mapidx = $aStart; $mapidx <= $aEnd; ++$mapidx, $ys += $ymarg) {
$cm->SetMap($mapidx, $aReverse);
$n = $cm->SetNumColors($n);
list($mapidx, $maparray) = $cm->GetCurrMap();
$ncols = count($maparray);
$colbuckets = $cm->GetBuckets();
// The module width will depend on the actual number of colors
$mw = round(($width - $lmarg - $rmarg) / $n);
// Draw color map title (name)
$t->Set('Basic colors: ' . $ncols . ', Total colors: ' . $n);
$t->SetAlign('center', 'bottom');
$t->SetAngle(0);
$t->SetFont(FF_TIMES, FS_NORMAL, 14);
$t->Stroke($graph->img, $width / 2, $ys - 3);
// Add the name/number of the map to the left
$t->SetAlign('right', 'center');
$t->Set('Map: ' . $mapidx);
$t->SetFont(FF_ARIAL, FS_NORMAL, 14);
$t->Stroke($graph->img, $xs - 20, round($ys + $mh / 2));
// Setup text properties for the color names
if ($addColorNames) {
$t->SetAngle(30);
$t->SetFont(FF_ARIAL, FS_NORMAL, 12);
$t->SetAlign('right', 'top');
}
// Loop through all colors in the map
$x = $xs;
$y = $ys;
$k = 0;
for ($i = 0; $i < $n; ++$i) {
$graph->img->SetColor($colbuckets[$i]);
$graph->img->FilledRectangle($x, $y, $x + $mw, $y + $mh);
// Mark all basic colors in the map with a bar and name
if ($i % (($n - $ncols) / ($ncols - 1) + 1) == 0) {
$graph->img->SetColor('black');
$graph->img->FilledRectangle($x, $y + $mh + 4, $x + $mw - 1, $y + $mh + 6);
if ($addColorNames) {
$t->Set($maparray[$k++]);
$t->Stroke($graph->img, $x + $mw / 2, $y + $mh + 10);
}
}
$x += $mw;
}
// Draw a border around the map
$graph->img->SetColor('black');
$graph->img->Rectangle($xs, $ys, $xs + $mw * $n, $ys + $mh);
}
// Send back to client
$graph->Stroke();
}
function convert($color, $to = false)
{
if (!$to) {
$to = $this->defaultReturnType;
}
if (is_array($color) && count($color) == 3) {
//could be rgb or hsl, make a judgement call
if ($color['r'] || $color['R']) {
$color = new Color_RGB($color);
} elseif ($color['h'] || $color['H']) {
$color = new Color_HSL($color);
} else {
return false;
}
// could not decide
} elseif (is_string($color) || is_numeric($color)) {
$tryword = ColorMap::wordToHex($color);
if ($tryword) {
$color = $tryword;
}
// could be a hex code or a color name
$color = new Color_Hex($color);
if (!$color->isHex()) {
return false;
}
// whups not hex.
}
$class = strtolower(get_class($color));
if (!$class) {
return false;
}
// not color usable
$hash = FALSE;
switch (strtolower($to)) {
case '#hex':
$hash = TRUE;
case 'hex':
if ($class == 'color_hex') {
return $color->toString($hash);
}
if (method_exists($color, 'toHex')) {
return $color->toHex($hash);
}
break;
case 'color_hex':
if ($class == 'color_hex') {
return $color;
}
if (method_exists($color, 'toHex')) {
return new Color_Hex($color->toHex());
}
break;
case 'rgb':
if ($class == 'color_rgb') {
return $color->toArray();
}
if (method_exists($color, 'toRGB')) {
return $color->toRGB();
}
break;
case 'color_rgb':
if ($class == 'color_rgb') {
return $color;
}
if (method_exists($color, 'toRGB')) {
return new Color_RGB($color->toRGB());
}
break;
case 'hsl':
if ($class == 'color_hsl') {
return $color->toArray();
}
if (method_exists($color, 'toHSL')) {
return $color->toHSL();
}
break;
case 'color_hsl':
if ($class == 'color_hsl') {
return $color;
}
if (method_exists($color, 'toHSL')) {
return new Color_HSL($color->toHSL());
}
break;
}
return null;
}
