/**
* Applies the sepia filter to an image resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
if ($this->offset === 0) {
return;
}
$resource = $aResource->getResource();
$imagex = imagesx($resource);
$imagey = imagesy($resource);
for ($x = 0; $x < $imagex; ++$x) {
for ($y = 0; $y < $imagey; ++$y) {
$distx = rand($this->offset * -1, $this->offset);
$disty = rand($this->offset * -1, $this->offset);
if ($x + $distx >= $imagex) {
continue;
}
if ($x + $distx < 0) {
continue;
}
if ($y + $disty >= $imagey) {
continue;
}
if ($y + $disty < 0) {
continue;
}
$oldcol = imagecolorat($resource, $x, $y);
$newcol = imagecolorat($resource, $x + $distx, $y + $disty);
imagesetpixel($resource, $x, $y, $newcol);
imagesetpixel($resource, $x + $distx, $y + $disty, $oldcol);
}
}
}
/**
* Applies the sepia filter to an image resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
$dstImg = $aResource->getResource();
$imgX = $aResource->getX();
$imgY = $aResource->getY();
$previous = array("index" => -1, "result" => 0);
for ($y = 0; $y < $imgY; $y++) {
for ($x = 0; $x < $imgX; $x++) {
$dstRGB = imagecolorat($dstImg, $x, $y);
if ($previous["index"] === $dstRGB) {
$newRGB = $previous["result"];
} else {
$dstR = $dstRGB >> 16 & 0xff;
$dstG = $dstRGB >> 8 & 0xff;
$dstB = $dstRGB & 0xff;
$newR = $dstR * 0.393 + $dstG * 0.769 + $dstB * 0.189 - $this->darken;
$newG = $dstR * 0.349 + $dstG * 0.6860000000000001 + $dstB * 0.168 - $this->darken;
$newB = $dstR * 0.272 + $dstG * 0.534 + $dstB * 0.131 - $this->darken;
$newR = $newR > 255 ? 255 : ($newR < 0 ? 0 : $newR);
$newG = $newG > 255 ? 255 : ($newG < 0 ? 0 : $newG);
$newB = $newB > 255 ? 255 : ($newB < 0 ? 0 : $newB);
$newRGB = imagecolorallocate($dstImg, $newR, $newG, $newB);
$previous["index"] = $dstRGB;
$previous["result"] = $newRGB;
}
imagesetpixel($dstImg, $x, $y, $newRGB);
}
}
}
/**
* Write the resource back to it's owner
* @param ImageResource $resource
* @param Segment $segment
* @throws ImageResourceException when segment's dimensions do not match resource dimensions
*/
public function writeSegment(ImageResource $resource, Segment $segment)
{
if ($resource->getWidth() !== $segment->getWidth() || $resource->getHeight() !== $segment->getHeight()) {
throw new ImageResourceException("Dimensions of resource and segment differ");
}
imagecopy($this->resource->getResource(), $resource->getResource(), $segment->getCoordinate()->getX(), $segment->getCoordinate()->getY(), 0, 0, $segment->getWidth(), $segment->getHeight());
}
/**
* Applies the sepia filter to an image resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
if ($this->degrees === 0) {
return;
}
$width = $aResource->getX();
$height = $aResource->getY();
// cache calculated colors in a map...
$colorMap = array();
for ($x = 0; $x < $width; ++$x) {
for ($y = 0; $y < $height; ++$y) {
$color = ColorUtil::getColorAt($aResource, Coordinate::create($x, $y));
if (!isset($colorMap[$color->getColorIndex()])) {
// calculate the new color
$hsl = ColorUtil::rgb2hsl($color->getRed(), $color->getGreen(), $color->getBlue());
$hsl[0] += $this->degrees;
$rgb = ColorUtil::hsl2rgb($hsl[0], $hsl[1], $hsl[2]);
$newcol = imagecolorallocate($aResource->getResource(), $rgb[0], $rgb[1], $rgb[2]);
$colorMap[$color->getColorIndex()] = $newcol;
} else {
$newcol = $colorMap[$color->getColorIndex()];
}
imagesetpixel($aResource->getResource(), $x, $y, $newcol);
}
}
$colorMap = null;
}
/**
* (non-PHPdoc)
* @see \imagemanipulation\filter\IImageFilter::applyFilter()
*/
public function applyFilter(ImageResource $resource)
{
if ($this->radius === 0) {
return;
}
$source_image = $resource->getResource();
$source_width = $resource->getX();
$source_height = $resource->getY();
$corner_image = imagecreatetruecolor($this->radius, $this->radius);
$clear_colour = imagecolorallocate($corner_image, 0, 0, 0);
imagecolortransparent($corner_image, $clear_colour);
$solid_colour = imagecolorallocate($corner_image, $this->color->getRed(), $this->color->getGreen(), $this->color->getBlue());
imagefill($corner_image, 0, 0, $solid_colour);
imagefilledellipse($corner_image, $this->radius, $this->radius, $this->radius * 2, $this->radius * 2, $clear_colour);
/*
* render the top-left, bottom-left, bottom-right, top-right corners by rotating and copying the mask
*/
imagecopymerge($source_image, $corner_image, 0, 0, 0, 0, $this->radius, $this->radius, 100);
$corner_image = imagerotate($corner_image, 90, 0);
imagecopymerge($source_image, $corner_image, 0, $source_height - $this->radius, 0, 0, $this->radius, $this->radius, 100);
$corner_image = imagerotate($corner_image, 90, 0);
imagecopymerge($source_image, $corner_image, $source_width - $this->radius, $source_height - $this->radius, 0, 0, $this->radius, $this->radius, 100);
$corner_image = imagerotate($corner_image, 90, 0);
imagecopymerge($source_image, $corner_image, $source_width - $this->radius, 0, 0, 0, $this->radius, $this->radius, 100);
}
/**
* (non-PHPdoc)
* @see \imagemanipulation\filter\IImageFilter::applyFilter()
*/
public function applyFilter(ImageResource $aResource)
{
$watermarkRes = new ImageImageResource($this->watermark);
imagealphablending($aResource->getResource(), true);
imagealphablending($watermarkRes->getResource(), true);
if ($this->position == 'random') {
$this->position = rand(1, 8);
}
if ($this->watermarkOpacity) {
$opacityFilter = new ImageFilterOpacity($this->watermarkOpacity);
$opacityFilter->applyFilter($watermarkRes);
}
$destWidth = $aResource->getX();
$destHeight = $aResource->getY();
$watermarkWidth = $watermarkRes->getX();
$watermarkHeight = $watermarkRes->getY();
switch ($this->position) {
case 'top-right':
case 'right-top':
case 1:
$result = imagecopy($aResource->getResource(), $watermarkRes->getResource(), $destWidth - $watermarkWidth, 0, 0, 0, $watermarkWidth, $watermarkHeight);
break;
case 'top-left':
case 2:
$result = imagecopy($aResource->getResource(), $watermarkRes->getResource(), 0, 0, 0, 0, $watermarkWidth, $watermarkHeight);
break;
case 'bottom-right':
case 3:
$result = imagecopy($aResource->getResource(), $watermarkRes->getResource(), $destWidth - $watermarkWidth, $destHeight - $watermarkHeight, 0, 0, $watermarkWidth, $watermarkHeight);
break;
case 'bottom-left':
case 4:
$result = imagecopy($aResource->getResource(), $watermarkRes->getResource(), 0, $destHeight - $watermarkHeight, 0, 0, $watermarkWidth, $watermarkHeight);
break;
case 'center':
case 5:
$result = imagecopy($aResource->getResource(), $watermarkRes->getResource(), $destWidth / 2 - $watermarkWidth / 2, $destHeight / 2 - $watermarkHeight / 2, 0, 0, $watermarkWidth, $watermarkHeight);
break;
case 'top':
case 6:
$result = imagecopy($aResource->getResource(), $watermarkRes->getResource(), $destWidth / 2 - $watermarkWidth / 2, 0, 0, 0, $watermarkWidth, $watermarkHeight);
break;
case 'bottom':
case 7:
$result = imagecopy($aResource->getResource(), $watermarkRes->getResource(), $destWidth / 2 - $watermarkWidth / 2, $destHeight - $watermarkHeight, 0, 0, $watermarkWidth, $watermarkHeight);
break;
case 'left':
case 8:
$result = imagecopy($aResource->getResource(), $watermarkRes->getResource(), 0, $destHeight / 2 - $watermarkHeight / 2, 0, 0, $watermarkWidth, $watermarkHeight);
break;
case 'right':
case 9:
$result = imagecopy($aResource->getResource(), $watermarkRes->getResource(), $destWidth - $watermarkWidth, $destHeight / 2 - $watermarkHeight / 2, 0, 0, $watermarkWidth, $watermarkHeight);
break;
imagedestroy($watermarkRes->getResource());
if (!$result) {
throw new \Exception('Applying watermark failed');
}
}
}
/**
* Applies the filter to the resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
$width = $aResource->getX();
$height = $aResource->getY();
$lineRes = imagecreatetruecolor($width, 1);
$bgc = imagecolorallocatealpha($lineRes, $this->backgroundColor->getRed(), $this->backgroundColor->getGreen(), $this->backgroundColor->getBlue(), $this->backgroundColor->getAlpha());
// Background color
imagefilledrectangle($lineRes, 0, 0, $width, 1, $bgc);
$rotateFilter = new ImageFilterRotate(180, $this->backgroundColor);
$rotateFilter->applyFilter($aResource);
$bg = imagecreatetruecolor($width, $this->height);
imagecopyresampled($bg, $aResource->getResource(), 0, 0, 0, 0, $width, $height, $width, $height);
$im = $bg;
$bg = imagecreatetruecolor($width, $this->height);
for ($x = 0; $x < $width; $x++) {
imagecopy($bg, $im, $x, 0, $width - $x, 0, 1, $this->height);
}
$im = $bg;
$in = 100 / $this->height;
for ($i = 0; $i <= $this->height; $i++) {
imagecopymerge($im, $lineRes, 0, $i, 0, 0, $width, 1, $this->startOpacity);
if ($this->startOpacity < 100) {
$this->startOpacity += $in;
}
}
imagecopymerge($im, $lineRes, 0, 0, 0, 0, $width, $this->divLineHeight, 100);
// Divider
$aResource->setResource($im);
}
/**
* Tests ImageResource->setResource()
*/
public function testSetResourceFail()
{
try {
$this->res->setResource(false);
$this->fail('Expected an exception');
} catch (ImageResourceException $ex) {
}
}
/**
* (non-PHPdoc)
* @see \imagemanipulation\filter\IImageFilter::applyFilter()
*/
public function applyFilter(ImageResource $aResource)
{
$resource = $aResource->getResource();
$imagex = $aResource->getX();
$imagey = $aResource->getY();
for ($x = 0; $x < $imagex; $x += $this->blocksize) {
for ($y = 0; $y < $imagey; $y += $this->blocksize) {
// get the pixel colour at the top-left of the square
$thiscol = imagecolorat($resource, $x, $y);
// set the new red, green, and blue values to 0
$newr = 0;
$newg = 0;
$newb = 0;
// create an empty array for the colours
$colours = array();
// cycle through each pixel in the block
for ($k = $x; $k < $x + $this->blocksize; ++$k) {
for ($l = $y; $l < $y + $this->blocksize; ++$l) {
// if we are outside the valid bounds of the image, use a safe colour
if ($k < 0) {
$colours[] = $thiscol;
continue;
}
if ($k >= $imagex) {
$colours[] = $thiscol;
continue;
}
if ($l < 0) {
$colours[] = $thiscol;
continue;
}
if ($l >= $imagey) {
$colours[] = $thiscol;
continue;
}
// if not outside the image bounds, get the colour at this pixel
$colours[] = imagecolorat($resource, $k, $l);
}
}
// cycle through all the colours we can use for sampling
foreach ($colours as $colour) {
// add their red, green, and blue values to our master numbers
$newr += $colour >> 16 & 0xff;
$newg += $colour >> 8 & 0xff;
$newb += $colour & 0xff;
}
// now divide the master numbers by the number of valid samples to get an average
$numelements = count($colours);
$newr /= $numelements;
$newg /= $numelements;
$newb /= $numelements;
// and use the new numbers as our colour
$newcol = imagecolorallocate($resource, $newr, $newg, $newb);
imagefilledrectangle($resource, $x, $y, $x + $this->blocksize - 1, $y + $this->blocksize - 1, $newcol);
}
}
}
/**
* Create a new image with specified width, height and color
*
* @param int $width The new image width in pixels
* @param int $height The new image height in pixels
* @param Color $color The new image color
*
* @return \imagemanipulation\ImageResource
*/
public static function create($width, $height, Color $color)
{
Args::int($width, 'width')->required()->min(1);
Args::int($height, 'height')->required()->min(1);
$res = new ImageResource(imagecreatetruecolor($width, $height));
$color = ImageUtil::allocateColor($res->getResource(), $color);
imagefill($res->getResource(), 0, 0, $color);
$res->saveAlpha();
return $res;
}
/**
* Applies the filter to the resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
$width = $aResource->getX();
$height = $aResource->getY();
$blockImg = imagecreate(1, 1);
imagecolorallocatealpha($blockImg, $this->blockColor->getRed(), $this->blockColor->getGreen(), $this->blockColor->getBlue(), $this->blockColor->getAlpha());
for ($i = 0; $i <= $this->nrOfBlocks; $i++) {
$xPos = rand(0, $width - $this->blockSize - 1);
$yPos = rand(0, $height - $this->blockSize - 1);
imagecopy($aResource->getResource(), $blockImg, $xPos, $yPos, $xPos, $yPos, $this->blockSize, $this->blockSize);
}
}
/**
* Applies the filter to the resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
//comic effect
$width = $aResource->getX();
$height = $aResource->getY();
/* @var $imgK \imagemanipulation\ImageResource */
$imgK = $aResource->cloneResource();
$trueColorFilter = new ImageFilterTrueColor('ffffff', '000000');
$trueColorFilter->applyFilter($imgK);
imagecopymerge($aResource->getResource(), $imgK->getResource(), 0, 0, 0, 0, $width, $height, $this->opacity);
imagedestroy($imgK->getResource());
}
/**
* Applies the filter to the image resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
$function = 'imageflip';
if (function_exists($function)) {
$function($aResource->getResource(), $this->getMode());
} else {
$width = $aResource->getX();
$height = $aResource->getY();
$dest = imagecreatetruecolor($width, $height);
imagealphablending($dest, false);
imagesavealpha($dest, true);
switch ($this->getMode()) {
case self::FLIP_VERTICALLY:
$this->flipVertically($dest, $aResource->getResource(), $height, $width);
break;
case self::FLIP_HORIZONTALLY:
$this->flipHorizontally($dest, $aResource->getResource(), $height, $width);
break;
case self::FLIP_BOTH:
$this->flipVertically($dest, $aResource->getResource(), $height, $width);
$copy = imagecreatetruecolor($width, $height);
imagecopy($copy, $dest, 0, 0, 0, 0, $width, $height);
$this->flipHorizontally($dest, $copy, $height, $width);
break;
}
$aResource->setResource($dest);
}
}
/**
* Applies the filter to the resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
$this->width = $aResource->getX();
$this->height = $aResource->getY();
$im = $aResource->getResource();
for ($x = 0; $x < $this->width; ++$x) {
for ($y = 0; $y < $this->height; ++$y) {
$index = imagecolorat($im, $x, $y);
$rgb = imagecolorsforindex($im, $index);
$this->vignetteToPixel($x, $y, $rgb);
$color = imagecolorallocate($im, $rgb['red'], $rgb['green'], $rgb['blue']);
imagesetpixel($im, $x, $y, $color);
}
}
}
/**
* Applies the filter to the resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
$dest = $aResource->getResource();
if (imageistruecolor($dest)) {
imagetruecolortopalette($dest, false, 256);
}
foreach ($this->search as $search) {
$searchRgb = new Color($search);
$index = imagecolorclosest($aResource->getResource(), $searchRgb->getRed(), $searchRgb->getGreen(), $searchRgb->getBlue());
// get White COlor
imagecolorset($aResource->getResource(), $index, $this->replace->getRed(), $this->replace->getGreen(), $this->replace->getBlue());
// SET NEW COLOR
}
$aResource->setResource($dest);
}
/**
* Applies the filter to the image resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
if ($this->angle == 0 || $this->angle == 360) {
return;
}
imageantialias($aResource->getResource(), true);
$aResource->setResource(imagerotate($aResource->getResource(), $this->angle, $this->bgColor->getColorIndex(), $this->bgColor->getAlpha()));
$new_imgres = imagecreatetruecolor($aResource->getX(), $aResource->getY());
$success = imagecopy($new_imgres, $aResource->getResource(), 0, 0, 0, 0, $aResource->getX(), $aResource->getY());
if (!$success) {
throw new FilterException(self::$filterType);
}
imagedestroy($new_imgres);
}
/**
* Applies the filter to the image resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
if ($this->percentage == 0) {
return;
// percentage = 0, do nothing !
}
$resource = $aResource->getResource();
$rgb = 0;
$d = array();
$s = array();
$dstx = 0;
$dsty = 0;
$dest = imagecreatetruecolor($aResource->getX(), $aResource->getY());
for ($i = 0; $i < $aResource->getY(); $i++) {
for ($j = 0; $j < $aResource->getX(); $j++) {
$rgb = imagecolorat($dest, $dstx + $j, $dsty + $i);
$d[0] = $rgb >> 16 & 0xff;
$d[1] = $rgb >> 8 & 0xff;
$d[2] = $rgb & 0xff;
$rgb = imagecolorat($aResource->getResource(), $j, $i);
$s[0] = $rgb >> 16 & 0xff;
$s[1] = $rgb >> 8 & 0xff;
$s[2] = $rgb & 0xff;
$d[0] += min($s[0], 0xff - $d[0]) * $this->percentage / 100;
$d[1] += min($s[1], 0xff - $d[1]) * $this->percentage / 100;
$d[2] += min($s[2], 0xff - $d[2]) * $this->percentage / 100;
imagesetpixel($resource, $dstx + $j, $dsty + $i, imagecolorallocate($resource, $d[0], $d[1], $d[2]));
}
}
}
/**
* Tests ImageResource->setResource()
*/
public function testSetResourceFail()
{
try {
$this->res->setResource(false);
$this->fail('Expected an exception');
} catch (ImageResourceException $ex) {
$this->assertNotNull($ex->getMessage());
}
}
/**
* (non-PHPdoc)
* @see \imagemanipulation\filter\IImageFilter::applyFilter()
*/
public function applyFilter(ImageResource $aResource)
{
if ($this->noise === 0) {
return;
}
$resource = $aResource->getResource();
$imagex = $aResource->getX();
$imagey = $aResource->getY();
for ($x = 0; $x < $imagex; ++$x) {
for ($y = 0; $y < $imagey; ++$y) {
if (rand(0, 1)) {
$rgb = imagecolorat($resource, $x, $y);
$red = $rgb >> 16 & 0xff;
$green = $rgb >> 8 & 0xff;
$blue = $rgb & 0xff;
$modifier = rand($this->noise * -1, $this->noise);
$red += $modifier;
$green += $modifier;
$blue += $modifier;
if ($red > 255) {
$red = 255;
}
if ($green > 255) {
$green = 255;
}
if ($blue > 255) {
$blue = 255;
}
if ($red < 0) {
$red = 0;
}
if ($green < 0) {
$green = 0;
}
if ($blue < 0) {
$blue = 0;
}
$newcol = imagecolorallocate($resource, $red, $green, $blue);
imagesetpixel($resource, $x, $y, $newcol);
}
}
}
}
public function applyFilter(ImageResource $aResource)
{
$x = $aResource->getX();
$y = $aResource->getY();
$resource = $aResource->getResource();
// Create a new image
$ip = imagecreatetruecolor($x, $y);
// Loop through the whole height of the image
for ($i = 0; $i < $y; $i++) {
// Loop through the whole width of the image
for ($j = 0; $j < $x; $j++) {
// Get the pixel color ( $this->img->x - 1 needs to be there because of the imagestart @ 0,0 ;) )
$c = imagecolorat($resource, $x - 1 - $j, $i);
// Get the rgb values from color $c
$r = $c >> 16 & 0xff;
$g = $c >> 8 & 0xff;
$b = $c & 0xff;
// Set the color
$clr = imagecolorallocate($ip, $r, $g, $b);
// Set the pixel color in the new image
imagesetpixel($ip, $j, $i, $clr);
}
}
$aResource->setResource(imagecreatetruecolor($x, $y));
imagecopy($aResource->getResource(), $ip, 0, 0, 0, 0, $x, $y);
}
/**
* Applies the filter to the resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
$width = $aResource->getWidth();
$height = $aResource->getHeight();
$lineRes = imagecreatetruecolor($width, 1);
$bgc = imagecolorallocatealpha($lineRes, $this->backgroundColor->getRed(), $this->backgroundColor->getGreen(), $this->backgroundColor->getBlue(), $this->backgroundColor->getAlpha());
// Background color
imagefilledrectangle($lineRes, 0, 0, $width, 1, $bgc);
$rotated = $aResource->cloneResource();
$rotateFilter = new ImageFilterRotate(180, $this->backgroundColor);
$rotateFilter->applyFilter($rotated);
$bg = imagecreatetruecolor($width, $this->height);
imagecopyresampled($bg, $rotated->getResource(), 0, 0, 0, 0, $width, $height, $width, $height);
$im = $bg;
$bg = imagecreatetruecolor($width, $this->height);
for ($x = 0; $x < $width; $x++) {
imagecopy($bg, $im, $x, 0, $width - $x, 0, 1, $this->height);
}
$im = $bg;
$in = 100 / $this->height;
for ($i = 0; $i <= $this->height; $i++) {
imagecopymerge($im, $lineRes, 0, $i, 0, 0, $width, 1, $this->startOpacity);
if ($this->startOpacity < 100) {
$this->startOpacity += $in;
}
}
imagecopymerge($im, $lineRes, 0, 0, 0, 0, $width, $this->divLineHeight, 100);
// Divider
if ($this->includeOriginal) {
// we need to include the original
$mergeWidth = imagesx($im) + $aResource->getWidth();
$mergeHeight = imagesy($im) + $aResource->getHeight();
$imMerge = imagecreatetruecolor($width, $mergeHeight);
imagecopy($imMerge, $aResource->getResource(), 0, 0, 0, 0, $width, $height);
imagecopy($imMerge, $im, 0, $aResource->getHeight(), 0, 0, $width, $height);
$aResource->setResource($imMerge);
} else {
$aResource->setResource($im);
}
}
/**
* Applies the sepia filter to an image resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
$dstImg = $aResource->getResource();
$imgX = $aResource->getX();
$imgY = $aResource->getY();
for ($y = 0; $y < $imgY; $y++) {
for ($x = 0; $x < $imgX; $x++) {
$dstRGB = imagecolorat($dstImg, $x, $y);
//$dstA = ($dstRGB >> 24) << 1;
$dstR = $dstRGB >> 16 & 0xff;
$dstG = $dstRGB >> 8 & 0xff;
$dstB = $dstRGB & 0xff;
$newR = $dstR * 0.393 + $dstG * 0.769 + $dstB * 0.189 - $this->darken;
$newG = $dstR * 0.349 + $dstG * 0.6860000000000001 + $dstB * 0.168 - $this->darken;
$newB = $dstR * 0.272 + $dstG * 0.534 + $dstB * 0.131 - $this->darken;
$newR = $newR > 255 ? 255 : ($newR < 0 ? 0 : $newR);
$newG = $newG > 255 ? 255 : ($newG < 0 ? 0 : $newG);
$newB = $newB > 255 ? 255 : ($newB < 0 ? 0 : $newB);
$newRGB = imagecolorallocate($dstImg, $newR, $newG, $newB);
imagesetpixel($dstImg, $x, $y, $newRGB);
}
}
}
/**
* Applies the sepia filter to an image resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
if ($this->red === 0 && $this->green === 0 && $this->blue === 0) {
return;
}
$res = $aResource->getResource();
$width = $aResource->getX();
$height = $aResource->getY();
for ($y = 0; $y < $height; $y++) {
for ($x = 0; $x < $width; $x++) {
$colorIndex = imagecolorat($res, $x, $y);
$dstA = $colorIndex >> 24 << 1;
$dstR = $colorIndex >> 16 & 0xff;
$dstG = $colorIndex >> 8 & 0xff;
$dstB = $colorIndex & 0xff;
$newR = min(255, $this->red + $dstR);
$newG = min(255, $this->green + $dstG);
$newB = min(255, $this->blue + $dstB);
$newColor = imagecolorallocatealpha($res, $newR, $newG, $newB, $dstA);
imagesetpixel($res, $x, $y, $newColor);
}
}
}
/**
* Create the thumbnail
*
* @param $aResource ImageResource The image resource of the original image
*
* @return ImageResource The image resource of the thumbnail
*/
public function create(ImageResource $aResource)
{
// The original PHP image resource
$origImgRes = $aResource->getResource();
// Create a new image resource
$newResource = clone $aResource;
$this->strategy->init($aResource);
$originalBegin = $this->strategy->getSourceBegin($newResource);
$originalEnd = $this->strategy->getSourceEnd($newResource);
$targetBegin = $this->strategy->getDestinationBegin($aResource);
$targetEnd = $this->strategy->getDestinationEnd($newResource);
// no change, return original
if ($originalBegin == $targetBegin && $originalEnd == $targetEnd) {
return $aResource;
}
$aResource->setResource(imagecreatetruecolor($targetEnd->getX(), $targetEnd->getY()));
imagecolortransparent($aResource->getResource(), imagecolorallocate($newResource->getResource(), 0, 0, 0));
imagealphablending($aResource->getResource(), false);
imageantialias($aResource->getResource(), true);
imagecopyresampled($aResource->getResource(), $newResource->getResource(), $targetBegin->getX(), $targetBegin->getY(), $originalBegin->getX(), $originalBegin->getY(), $targetEnd->getX(), $targetEnd->getY(), $originalEnd->getX(), $originalEnd->getY());
$aResource->setResource($aResource->getResource());
$newResource->destroy();
return $aResource;
}
/**
* Applies the filter to the resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
//comic effect
$width = $aResource->getX();
$height = $aResource->getY();
$imgK = imagecreatetruecolor($width, $height);
$lowR = $this->lowcolor->getRed();
$lowG = $this->lowcolor->getGreen();
$lowB = $this->lowcolor->getBlue();
$highR = $this->highcolor->getRed();
$highG = $this->highcolor->getGreen();
$highB = $this->highcolor->getBlue();
for ($y = 0; $y < $height; $y++) {
for ($x = 0; $x < $width; $x++) {
$rgb = imagecolorat($aResource->getResource(), $x, $y);
$r = $rgb >> 16 & 0xff;
$g = $rgb >> 8 & 0xff;
$b = $rgb & 0xff;
$bw = $r + $g + $b > 300 ? imagecolorallocate($imgK, $lowR, $lowG, $lowB) : imagecolorallocate($imgK, $highR, $highG, $highB);
imagesetpixel($imgK, $x, $y, $bw);
}
}
$aResource->setResource($imgK);
}
/**
* (non-PHPdoc)
* @see \imagemanipulation\filter\IImageFilter::applyFilter()
*/
public function applyFilter(ImageResource $aResource)
{
$placeholder = imagecreatetruecolor($aResource->getX(), $aResource->getY());
imagealphablending($placeholder, false);
imagesavealpha($placeholder, true);
$destWidth = $this->fill ? $aResource->getX() : $this->overlay->getX();
$destHeight = $this->fill ? $aResource->getY() : $this->overlay->getY();
imagecopyresized($placeholder, $this->overlay->getResource(), 0, 0, 0, 0, $destWidth, $destHeight, $this->overlay->getX(), $this->overlay->getY());
imagecopymerge($aResource->getResource(), $placeholder, $this->startX, $this->startY, 0, 0, $destWidth, $destHeight, $this->opacity);
}
/**
* (non-PHPdoc)
* @see \imagemanipulation\filter\IImageFilter::applyFilter()
*/
public function applyFilter(ImageResource $aResource)
{
$destWidth = $this->fill ? $aResource->getX() : $this->overlay->getX();
$destHeight = $this->fill ? $aResource->getY() : $this->overlay->getY();
imagealphablending($this->overlay->getResource(), false);
imagesavealpha($this->overlay->getResource(), false);
imagecopyresized($this->overlay->getResource(), $this->overlay->getResource(), 0, 0, 0, 0, $destWidth, $destHeight, $this->overlay->getX(), $this->overlay->getY());
imagealphablending($aResource->getResource(), true);
imagesavealpha($aResource->getResource(), true);
imagecopyresampled($aResource->getResource(), $this->overlay->getResource(), $this->startX, $this->startY, 0, 0, $destWidth, $destHeight, $destWidth, $destHeight);
}
/**
* Applies the filter to the resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
if (!isset($this->opacity)) {
return;
}
$this->opacity /= 100;
//get image width and height
$w = $aResource->getX();
$h = $aResource->getY();
//turn alpha blending off
imagealphablending($aResource->getResource(), false);
//find the most opaque pixel in the image (the one with the smallest alpha value)
$minalpha = 127;
for ($x = 0; $x < $w; $x++) {
for ($y = 0; $y < $h; $y++) {
$alpha = imagecolorat($aResource->getResource(), $x, $y) >> 24 & 0xff;
if ($alpha < $minalpha) {
$minalpha = $alpha;
}
}
}
//loop through image pixels and modify alpha for each
for ($x = 0; $x < $w; $x++) {
for ($y = 0; $y < $h; $y++) {
//get current alpha value (represents the TANSPARENCY!)
$colorxy = imagecolorat($aResource->getResource(), $x, $y);
$alpha = $colorxy >> 24 & 0xff;
//calculate new alpha
if ($minalpha !== 127) {
$alpha = 127 + 127 * $this->opacity * ($alpha - 127) / (127 - $minalpha);
} else {
$alpha += 127 * $this->opacity;
}
//get the color index with new alpha
$alphacolorxy = imagecolorallocatealpha($aResource->getResource(), $colorxy >> 16 & 0xff, $colorxy >> 8 & 0xff, $colorxy & 0xff, $alpha);
//set pixel with the new color + opacity
if (!imagesetpixel($aResource->getResource(), $x, $y, $alphacolorxy)) {
return;
}
}
}
}
/**
* Applies the filter to the resource
*
* @param ImageResource $aResource
*/
public function applyFilter(ImageResource $aResource)
{
$orig_time_limit = ini_get('max_execution_time');
set_time_limit(180);
// creating the image
$starting_img = $aResource->getResource();
// this will be the final image, same width and height of the original
$final = imagecreatetruecolor($aResource->getX(), $aResource->getY());
// looping through ALL pixels!!
for ($x = 1; $x < $aResource->getX() - 1; $x++) {
for ($y = 1; $y < $aResource->getY() - 1; $y++) {
// getting gray value of all surrounding pixels
$pixel_up = $this->getLuminance(imagecolorat($starting_img, $x, $y - 1));
$pixel_down = $this->getLuminance(imagecolorat($starting_img, $x, $y + 1));
$pixel_left = $this->getLuminance(imagecolorat($starting_img, $x - 1, $y));
$pixel_right = $this->getLuminance(imagecolorat($starting_img, $x + 1, $y));
$pixel_up_left = $this->getLuminance(imagecolorat($starting_img, $x - 1, $y - 1));
$pixel_up_right = $this->getLuminance(imagecolorat($starting_img, $x + 1, $y - 1));
$pixel_down_left = $this->getLuminance(imagecolorat($starting_img, $x - 1, $y + 1));
$pixel_down_right = $this->getLuminance(imagecolorat($starting_img, $x + 1, $y + 1));
// appliying convolution mask
$conv_x = $pixel_up_right + $pixel_right * 2 + $pixel_down_right - ($pixel_up_left + $pixel_left * 2 + $pixel_down_left);
$conv_y = $pixel_up_left + $pixel_up * 2 + $pixel_up_right - ($pixel_down_left + $pixel_down * 2 + $pixel_down_right);
// calculating the distance
$gray = (int) sqrt($conv_x * $conv_x + $conv_y + $conv_y);
// inverting the distance not to get the negative image
$gray = 255 - $gray;
// adjusting distance if it's greater than 255 or less than zero (out of color range)
if ($gray > 255) {
$gray = 255;
}
if ($gray < 0) {
$gray = 0;
}
// creation of the new gray
$new_gray = imagecolorallocate($final, $gray, $gray, $gray);
// adding the gray pixel to the new image
imagesetpixel($final, $x, $y, $new_gray);
}
}
imagedestroy($starting_img);
$aResource->setResource($final);
set_time_limit($orig_time_limit);
}
public function applyFilter(ImageResource $aResource)
{
imagefilter($aResource->getResource(), IMG_FILTER_MEAN_REMOVAL);
}
