function execute($image)
{
$width = $image->getWidth();
$height = $image->getHeight();
$mask = wiTrueColorImage::create($width, $height);
$mask->setTransparentColor(-1);
$mask->alphaBlending(false);
$mask->saveAlpha(false);
for ($i = 0; $i <= 255; $i++) {
$greyscale[$i] = ImageColorAllocate($mask->getHandle(), $i, $i, $i);
}
imagefilledrectangle($mask->getHandle(), 0, 0, $width, $height, $greyscale[255]);
$transparentColor = $image->getTransparentColor();
$alphaToGreyRatio = 255 / 127;
for ($x = 0; $x < $width; $x++) {
for ($y = 0; $y < $height; $y++) {
$color = $image->getColorAt($x, $y);
if ($color == $transparentColor) {
$rgba['alpha'] = 127;
} else {
$rgba = $image->getColorRGB($color);
}
imagesetpixel($mask->getHandle(), $x, $y, $greyscale[255 - round($rgba['alpha'] * $alphaToGreyRatio)]);
}
}
return $mask;
}
function testCreate()
{
$img = wiTrueColorImage::create(10, 10);
$this->assertTrue($img instanceof wiTrueColorImage);
$this->assertTrue($img->isValid());
$this->assertTrue($img->isTrueColor());
}
public function createImage($width, $height, $bgColor = '#000000', $bgTransparentamount = 0)
{
$newImage = wiTrueColorImage::create($width, $height);
list($bgR, $bgG, $bgB) = $this->hex2rgb($bgColor);
$bgColor = $newImage->allocateColorAlpha($bgR, $bgG, $bgB, $bgTransparentamount);
$newImage->fill(0, 0, $bgColor);
return $newImage;
}
function asTrueColor()
{
$width = $this->getWidth();
$height = $this->getHeight();
$new = wiTrueColorImage::create($width, $height);
if ($this->isTransparent()) {
$new->copyTransparencyFrom($this);
}
imageCopy($new->getHandle(), $this->handle, 0, 0, 0, 0, $width, $height);
return $new;
}
function execute($img, $left, $top, $width, $height)
{
$width = wiDimension::fix($img->getWidth(), $width);
$height = wiDimension::fix($img->getHeight(), $height);
$new = wiTrueColorImage::create($width, $height);
if ($img->isTransparent()) {
$new->copyTransparencyFrom($img);
imagecopyresized($new->getHandle(), $img->getHandle(), 0, 0, $left, $top, $width, $height, $width, $height);
} else {
$new->alphaBlending(false);
$new->saveAlpha(true);
imagecopyresampled($new->getHandle(), $img->getHandle(), 0, 0, $left, $top, $width, $height, $width, $height);
}
return $new;
}
function execute($img, $width, $height, $fit)
{
if (!$img instanceof wiImage || !$img->isValid()) {
throw new wiInvalidImageException("Can't resize an invalid image.");
}
$dim = $this->prepareDimensions($img, $width, $height, $fit);
$new = wiTrueColorImage::create($dim['width'], $dim['height']);
if ($img->isTransparent()) {
$new->copyTransparencyFrom($img);
imagecopyresized($new->getHandle(), $img->getHandle(), 0, 0, 0, 0, $new->getWidth(), $new->getHeight(), $img->getWidth(), $img->getHeight());
} else {
$new->alphaBlending(false);
$new->saveAlpha(true);
imagecopyresampled($new->getHandle(), $img->getHandle(), 0, 0, 0, 0, $new->getWidth(), $new->getHeight(), $img->getWidth(), $img->getHeight());
}
return $new;
}
function execute($img, $left, $top, $width, $height)
{
$left = wiDimension::fix($img->getWidth(), $left);
$top = wiDimension::fix($img->getHeight(), $top);
$width = wiDimension::fix($img->getWidth(), $width);
if ($width > $img->getWidth() - $left) {
$width = $img->getWidth() - $left;
}
$height = wiDimension::fix($img->getHeight(), $height);
if ($height > $img->getHeight() - $top) {
$height = $img->getHeight() - $top;
}
if ($left < 0) {
$width = $left + $width;
$left = 0;
}
if ($left + $width > $img->getWidth()) {
$width = $img->getWidth() - $left;
}
if ($width < 0) {
$width = 0;
}
if ($top < 0) {
$height = $top + $height;
$top = 0;
}
if ($top + $height > $img->getHeight()) {
$top = $img->getHeight() - $top;
}
if ($height < 0) {
$height = 0;
}
$new = wiTrueColorImage::create($width, $height);
if ($img->isTransparent()) {
$new->copyTransparencyFrom($img);
imagecopyresized($new->getHandle(), $img->getHandle(), 0, 0, $left, $top, $width, $height, $width, $height);
} else {
$new->alphaBlending(false);
$new->saveAlpha(true);
imagecopyresampled($new->getHandle(), $img->getHandle(), 0, 0, $left, $top, $width, $height, $width, $height);
}
return $new;
}
/**
*
* @var string $scale 'up', 'down' or 'any'
*/
function execute($img, $width, $height, $fit, $scale = 'any')
{
if (!$img instanceof wiImage || !$img->isValid()) {
throw new wiInvalidImageException("Can't resize an invalid image.");
}
$dim = $this->prepareDimensions($img, $width, $height, $fit);
if ($scale === 'down' && ($dim['width'] >= $img->getWidth() && $dim['height'] >= $img->getHeight()) || $scale === 'up' && ($dim['width'] <= $img->getWidth() && $dim['height'] <= $img->getHeight())) {
$dim = array('width' => $img->getWidth(), 'height' => $img->getHeight());
}
if ($dim['width'] <= 0 || $dim['height'] <= 0) {
throw new wiInvalidResizeDimensionException("Both dimensions must be larger than 0.");
}
$new = wiTrueColorImage::create($dim['width'], $dim['height']);
if ($img->isTransparent()) {
$new->copyTransparencyFrom($img);
imagecopyresized($new->getHandle(), $img->getHandle(), 0, 0, 0, 0, $new->getWidth(), $new->getHeight(), $img->getWidth(), $img->getHeight());
} else {
$new->alphaBlending(false);
$new->saveAlpha(true);
imagecopyresampled($new->getHandle(), $img->getHandle(), 0, 0, 0, 0, $new->getWidth(), $new->getHeight(), $img->getWidth(), $img->getHeight());
}
return $new;
}
function execute($img, $channels)
{
$blank = array('red' => 0, 'green' => 0, 'blue' => 0, 'alpha' => 0);
$width = $img->getWidth();
$height = $img->getHeight();
$copy = wiTrueColorImage::create($width, $height);
if (count($channels) > 0) {
for ($x = 0; $x < $width; $x++) {
for ($y = 0; $y < $height; $y++) {
$RGBA = $img->getRGBAt($x, $y);
$newRGBA = $blank;
foreach ($channels as $channel) {
$newRGBA[$channel] = $RGBA[$channel];
}
$color = $copy->getExactColorAlpha($newRGBA);
if ($color == -1) {
$color = $copy->allocateColorAlpha($newRGBA);
}
$copy->setColorAt($x, $y, $color);
}
}
}
return $copy;
}
function testSaveOverrideFormat()
{
$uri = IMG_PATH . 'temp/test.gif';
$img = wiTrueColorImage::create(10, 10);
$img->saveToFile($uri, 'png');
try {
$img = @wiImage::load($uri);
$this->fail("Exception expected");
} catch (wiInvalidImageSourceException $e) {
$this->pass();
}
$img = wiImage::load($uri, 'png');
$this->assertTrue(10, $img->getWidth());
$this->assertTrue(10, $img->getHeight());
unlink($uri);
}
