/**
* Executes imageconvolution() filter
*
* @param \WideImage\Image $image
* @param array $matrix
* @param numeric $div
* @param numeric $offset
* @return \WideImage\Image
*/
public function execute($image, $matrix, $div, $offset)
{
$new = $image->asTrueColor();
if (!imageconvolution($new->getHandle(), $matrix, $div, $offset)) {
throw new GDFunctionResultException("imageconvolution() returned false");
}
return $new;
}
/**
* Executes imagegammacorrect()
*
* @param \WideImage\Image $image
* @param numeric $input_gamma
* @param numeric $output_gamma
* @return \WideImage\TrueColorImage
*/
public function execute($image, $input_gamma, $output_gamma)
{
$new = $image->copy();
if (!imagegammacorrect($new->getHandle(), $input_gamma, $output_gamma)) {
throw new GDFunctionResultException("imagegammacorrect() returned false");
}
return $new;
}
/**
* Returns a greyscale copy of an image
*
* @param \WideImage\Image $image
* @return \WideImage\Image
*/
public function execute($image)
{
$new = $image->asTrueColor();
if (!imagefilter($new->getHandle(), IMG_FILTER_GRAYSCALE)) {
throw new GDFunctionResultException("imagefilter() returned false");
}
if (!$image->isTrueColor()) {
$new = $new->asPalette();
}
return $new;
}
/**
* Returns a mirrored image
*
* @param \WideImage\Image $image
* @return \WideImage\Image
*/
public function execute($image)
{
$new = $image->copy();
$width = $image->getWidth();
$height = $image->getHeight();
if ($new->isTransparent()) {
imagefilledrectangle($new->getHandle(), 0, 0, $width, $height, $new->getTransparentColor());
}
for ($x = 0; $x < $width; $x++) {
if (!imagecopy($new->getHandle(), $image->getHandle(), $x, 0, $width - $x - 1, 0, 1, $height)) {
throw new GDFunctionResultException("imagecopy() returned false");
}
}
return $new;
}
/**
* Executes imagefilter
*
* @param \WideImage\Image $image
* @param int $filter
* @param numeric $arg1
* @param numeric $arg2
* @param numeric $arg3
* @return \WideImage\TrueColorImage
*/
public function execute($image, $filter, $arg1 = null, $arg2 = null, $arg3 = null, $arg4 = null)
{
$new = $image->asTrueColor();
if (in_array($filter, static::$one_arg_filters)) {
$res = imagefilter($new->getHandle(), $filter, $arg1);
} elseif (defined('IMG_FILTER_PIXELATE') && $filter == IMG_FILTER_PIXELATE) {
$res = imagefilter($new->getHandle(), $filter, $arg1, $arg2);
} elseif ($filter == IMG_FILTER_COLORIZE) {
$res = imagefilter($new->getHandle(), $filter, $arg1, $arg2, $arg3, $arg4);
} else {
$res = imagefilter($new->getHandle(), $filter);
}
if (!$res) {
throw new GDFunctionResultException("imagefilter() returned false");
}
return $new;
}
/**
* Saves resized image to a file
*
* @param string $path File location
* @param quality $quality Quality options
* @return Image
*/
public function save($path, $quality = array())
{
$ext = pathinfo($path, PATHINFO_EXTENSION);
$jpeg_quality = elgg_extract('jpeg_quality', $quality);
$png_quality = elgg_extract('png_quality', $quality);
$png_filter = elgg_extract('png_filter', $quality);
switch ($ext) {
default:
$this->source->saveToFile($path, $jpeg_quality);
break;
case 'gif':
$this->source->saveToFile($path);
break;
case 'png':
$this->source->saveToFile($path, $png_quality, $png_filter);
break;
}
return $this;
}
/**
* Prepares and corrects smart coordinates
*
* @param \WideImage\Image $img
* @param smart_coordinate $width
* @param smart_coordinate $height
* @param string $fit
* @return array
*/
protected function prepareDimensions($img, $width, $height, $fit)
{
if ($width === null && $height === null) {
return array('width' => $img->getWidth(), 'height' => $img->getHeight());
}
if ($width !== null) {
$width = Coordinate::fix($width, $img->getWidth());
$rx = $img->getWidth() / $width;
} else {
$rx = null;
}
if ($height !== null) {
$height = Coordinate::fix($height, $img->getHeight());
$ry = $img->getHeight() / $height;
} else {
$ry = null;
}
if ($rx === null && $ry !== null) {
$rx = $ry;
$width = round($img->getWidth() / $rx);
}
if ($ry === null && $rx !== null) {
$ry = $rx;
$height = round($img->getHeight() / $ry);
}
if ($width === 0 || $height === 0) {
return array('width' => 0, 'height' => 0);
}
if ($fit == null) {
$fit = 'inside';
}
$dim = [];
if ($fit == 'fill') {
$dim['width'] = $width;
$dim['height'] = $height;
} elseif ($fit == 'inside' || $fit == 'outside') {
if ($fit == 'inside') {
$ratio = $rx > $ry ? $rx : $ry;
} else {
$ratio = $rx < $ry ? $rx : $ry;
}
$dim['width'] = round($img->getWidth() / $ratio);
$dim['height'] = round($img->getHeight() / $ratio);
} else {
throw new InvalidFitMethodException("{$fit} is not a valid resize-fit method.");
}
return $dim;
}
/**
* Returns rotated image
*
* @param \WideImage\Image $image
* @param numeric $angle
* @param int $bgColor
* @param bool $ignoreTransparent
* @return \WideImage\Image
*/
public function execute($image, $angle, $bgColor, $ignoreTransparent)
{
$angle = -floatval($angle);
if ($angle < 0) {
$angle = 360 + $angle;
}
$angle = $angle % 360;
if ($angle == 0) {
return $image->copy();
}
$image = $image->asTrueColor();
if ($bgColor === null) {
$bgColor = $image->getTransparentColor();
if ($bgColor == -1) {
$bgColor = $image->allocateColorAlpha(255, 255, 255, 127);
imagecolortransparent($image->getHandle(), $bgColor);
}
}
return new TrueColorImage(imagerotate($image->getHandle(), $angle, $bgColor, $ignoreTransparent));
}
/**
* Returns a mask
*
* @param \WideImage\Image $image
* @return \WideImage\Image
*/
public function execute($image)
{
$width = $image->getWidth();
$height = $image->getHeight();
$mask = TrueColorImage::create($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;
}
/**
* Returns a greyscale copy of an image
*
* @param \WideImage\Image $image
* @return \WideImage\Image
*/
public function execute($image)
{
$palette = !$image->isTrueColor();
$transparent = $image->isTransparent();
if ($palette && $transparent) {
$tcrgb = $image->getTransparentColorRGB();
}
$new = $image->asTrueColor();
if (!imagefilter($new->getHandle(), IMG_FILTER_NEGATE)) {
throw new GDFunctionResultException("imagefilter() returned false");
}
if ($palette) {
$new = $new->asPalette();
if ($transparent) {
$irgb = array('red' => 255 - $tcrgb['red'], 'green' => 255 - $tcrgb['green'], 'blue' => 255 - $tcrgb['blue'], 'alpha' => 127);
// needs imagecolorexactalpha instead of imagecolorexact, otherwise doesn't work on some transparent GIF images
$new_tci = imagecolorexactalpha($new->getHandle(), $irgb['red'], $irgb['green'], $irgb['blue'], 127);
$new->setTransparentColor($new_tci);
}
}
return $new;
}
/**
* Returns an image with only specified channels copied
*
* @param \WideImage\Image $img
* @param array $channels
* @return \WideImage\Image
*/
public function execute($img, $channels)
{
$blank = array('red' => 0, 'green' => 0, 'blue' => 0, 'alpha' => 0);
$width = $img->getWidth();
$height = $img->getHeight();
$copy = TrueColorImage::create($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;
}
/**
* Returns a merged image
*
* @param \WideImage\Image $base
* @param \WideImage\Image $overlay
* @param smart_coordinate $left
* @param smart_coordinate $top
* @param numeric $pct
* @return \WideImage\Image
*/
public function execute($base, $overlay, $left, $top, $pct)
{
$x = Coordinate::fix($left, $base->getWidth(), $overlay->getWidth());
$y = Coordinate::fix($top, $base->getHeight(), $overlay->getHeight());
$result = $base->asTrueColor();
$result->alphaBlending(true);
$result->saveAlpha(true);
if ($pct <= 0) {
return $result;
}
if ($pct < 100) {
if (!imagecopymerge($result->getHandle(), $overlay->getHandle(), $x, $y, 0, 0, $overlay->getWidth(), $overlay->getHeight(), $pct)) {
throw new GDFunctionResultException("imagecopymerge() returned false");
}
} else {
if (!imagecopy($result->getHandle(), $overlay->getHandle(), $x, $y, 0, 0, $overlay->getWidth(), $overlay->getHeight())) {
throw new GDFunctionResultException("imagecopy() returned false");
}
}
return $result;
}
/**
* Returns image with every pixel changed by specififed function
*
* @param \WideImage\Image $image
* @param str $function
* @param int $value
* @return \WideImage\Image
*/
public function filter($image, $function, $value)
{
for ($y = 0; $y < $image->getHeight(); $y++) {
for ($x = 0; $x < $image->getWidth(); $x++) {
$rgb = imagecolorat($image->getHandle(), $x, $y);
$a = $rgb >> 24 & 0xff;
$r = $rgb >> 16 & 0xff;
$g = $rgb >> 8 & 0xff;
$b = $rgb & 0xff;
static::$function($r, $g, $b, $value);
$color = imagecolorallocatealpha($image->getHandle(), $r, $g, $b, $a);
imagesetpixel($image->getHandle(), $x, $y, $color);
}
}
return $image;
}
/**
* Writes text onto an image
*
* @param \WideImage\Image $image
* @param mixed $x smart coordinate
* @param mixed $y smart coordinate
* @param string $text
* @param int $angle Angle in degrees clockwise
*/
public function writeText($image, $x, $y, $text, $angle = 0)
{
if ($image->isTrueColor()) {
$image->alphaBlending(true);
}
$box = imageftbbox($this->size, $angle, $this->face, $text);
$obox = array('left' => min($box[0], $box[2], $box[4], $box[6]), 'top' => min($box[1], $box[3], $box[5], $box[7]), 'right' => max($box[0], $box[2], $box[4], $box[6]) - 1, 'bottom' => max($box[1], $box[3], $box[5], $box[7]) - 1);
$obox['width'] = abs($obox['left']) + abs($obox['right']);
$obox['height'] = abs($obox['top']) + abs($obox['bottom']);
$x = Coordinate::fix($x, $image->getWidth(), $obox['width']);
$y = Coordinate::fix($y, $image->getHeight(), $obox['height']);
$fixed_x = $x - $obox['left'];
$fixed_y = $y - $obox['top'];
imagettftext($image->getHandle(), $this->size, $angle, $fixed_x, $fixed_y, $this->color, $this->face, $text);
}
/**
* Applies a mask on the copy of source image
*
* @param \WideImage\Image $image
* @param \WideImage\Image $mask
* @param smart_coordinate $left
* @param smart_coordinate $top
* @return \WideImage\Image
*/
public function execute($image, $mask, $left = 0, $top = 0)
{
$left = Coordinate::fix($left, $image->getWidth(), $mask->getWidth());
$top = Coordinate::fix($top, $image->getHeight(), $mask->getHeight());
$width = $image->getWidth();
$mask_width = $mask->getWidth();
$height = $image->getHeight();
$mask_height = $mask->getHeight();
$result = $image->asTrueColor();
$result->alphaBlending(false);
$result->saveAlpha(true);
$srcTransparentColor = $result->getTransparentColor();
if ($srcTransparentColor >= 0) {
$destTransparentColor = $srcTransparentColor;
} else {
$destTransparentColor = $result->allocateColorAlpha(255, 255, 255, 127);
}
for ($x = 0; $x < $width; $x++) {
for ($y = 0; $y < $height; $y++) {
$mx = $x - $left;
$my = $y - $top;
if ($mx >= 0 && $mx < $mask_width && $my >= 0 && $my < $mask_height) {
$srcColor = $image->getColorAt($x, $y);
if ($srcColor == $srcTransparentColor) {
$destColor = $destTransparentColor;
} else {
$maskRGB = $mask->getRGBAt($mx, $my);
if ($maskRGB['red'] == 0) {
$destColor = $destTransparentColor;
} elseif ($srcColor >= 0) {
$imageRGB = $image->getRGBAt($x, $y);
$level = $maskRGB['red'] / 255 * (1 - $imageRGB['alpha'] / 127);
$imageRGB['alpha'] = 127 - round($level * 127);
if ($imageRGB['alpha'] == 127) {
$destColor = $destTransparentColor;
} else {
$destColor = $result->allocateColorAlpha($imageRGB);
}
} else {
$destColor = $destTransparentColor;
}
}
$result->setColorAt($x, $y, $destColor);
}
}
}
return $result;
}
/**
* Returns a cropped image
*
* @param \WideImage\Image $img
* @param smart_coordinate $left
* @param smart_coordinate $top
* @param smart_coordinate $width
* @param smart_coordinate $height
* @return \WideImage\Image
*/
public function execute($img, $left, $top, $width, $height)
{
$width = Coordinate::fix($width, $img->getWidth(), $width);
$height = Coordinate::fix($height, $img->getHeight(), $height);
$left = Coordinate::fix($left, $img->getWidth(), $width);
$top = Coordinate::fix($top, $img->getHeight(), $height);
if ($left < 0) {
$width = $left + $width;
$left = 0;
}
if ($width > $img->getWidth() - $left) {
$width = $img->getWidth() - $left;
}
if ($top < 0) {
$height = $top + $height;
$top = 0;
}
if ($height > $img->getHeight() - $top) {
$height = $img->getHeight() - $top;
}
if ($width <= 0 || $height <= 0) {
throw new Exception("Can't crop outside of an image.");
}
$new = $img->doCreate($width, $height);
if ($img->isTransparent() || $img instanceof PaletteImage) {
$new->copyTransparencyFrom($img);
if (!imagecopyresized($new->getHandle(), $img->getHandle(), 0, 0, $left, $top, $width, $height, $width, $height)) {
throw new GDFunctionResultException("imagecopyresized() returned false");
}
} else {
$new->alphaBlending(false);
$new->saveAlpha(true);
if (!imagecopyresampled($new->getHandle(), $img->getHandle(), 0, 0, $left, $top, $width, $height, $width, $height)) {
throw new GDFunctionResultException("imagecopyresampled() returned false");
}
}
return $new;
}
/**
* Executes the auto-crop operation on the $img
*
* @param \WideImage\Image $img
* @param int $rgb_threshold The difference in RGB from $base_color
* @param int $pixel_cutoff The number of pixels on each border that must be over $rgb_threshold
* @param int $base_color The color that will get cropped
* @return \WideImage\Image resulting auto-cropped image
*/
public function execute($img, $margin, $rgb_threshold, $pixel_cutoff, $base_color)
{
$margin = intval($margin);
$rgb_threshold = intval($rgb_threshold);
if ($rgb_threshold < 0) {
$rgb_threshold = 0;
}
$pixel_cutoff = intval($pixel_cutoff);
if ($pixel_cutoff <= 1) {
$pixel_cutoff = 1;
}
if ($base_color === null) {
$rgb_base = $img->getRGBAt(0, 0);
} else {
if ($base_color < 0) {
return $img->copy();
}
$rgb_base = $img->getColorRGB($base_color);
}
$cut_rect = array('left' => 0, 'top' => 0, 'right' => $img->getWidth() - 1, 'bottom' => $img->getHeight() - 1);
for ($y = 0; $y <= $cut_rect['bottom']; $y++) {
$count = 0;
for ($x = 0; $x <= $cut_rect['right']; $x++) {
$rgb = $img->getRGBAt($x, $y);
$diff = abs($rgb['red'] - $rgb_base['red']) + abs($rgb['green'] - $rgb_base['green']) + abs($rgb['blue'] - $rgb_base['blue']);
if ($diff > $rgb_threshold) {
$count++;
if ($count >= $pixel_cutoff) {
$cut_rect['top'] = $y;
break 2;
}
}
}
}
for ($y = $img->getHeight() - 1; $y >= $cut_rect['top']; $y--) {
$count = 0;
for ($x = 0; $x <= $cut_rect['right']; $x++) {
$rgb = $img->getRGBAt($x, $y);
$diff = abs($rgb['red'] - $rgb_base['red']) + abs($rgb['green'] - $rgb_base['green']) + abs($rgb['blue'] - $rgb_base['blue']);
if ($diff > $rgb_threshold) {
$count++;
if ($count >= $pixel_cutoff) {
$cut_rect['bottom'] = $y;
break 2;
}
}
}
}
for ($x = 0; $x <= $cut_rect['right']; $x++) {
$count = 0;
for ($y = $cut_rect['top']; $y <= $cut_rect['bottom']; $y++) {
$rgb = $img->getRGBAt($x, $y);
$diff = abs($rgb['red'] - $rgb_base['red']) + abs($rgb['green'] - $rgb_base['green']) + abs($rgb['blue'] - $rgb_base['blue']);
if ($diff > $rgb_threshold) {
$count++;
if ($count >= $pixel_cutoff) {
$cut_rect['left'] = $x;
break 2;
}
}
}
}
for ($x = $cut_rect['right']; $x >= $cut_rect['left']; $x--) {
$count = 0;
for ($y = $cut_rect['top']; $y <= $cut_rect['bottom']; $y++) {
$rgb = $img->getRGBAt($x, $y);
$diff = abs($rgb['red'] - $rgb_base['red']) + abs($rgb['green'] - $rgb_base['green']) + abs($rgb['blue'] - $rgb_base['blue']);
if ($diff > $rgb_threshold) {
$count++;
if ($count >= $pixel_cutoff) {
$cut_rect['right'] = $x;
break 2;
}
}
}
}
$cut_rect = array('left' => $cut_rect['left'] - $margin, 'top' => $cut_rect['top'] - $margin, 'right' => $cut_rect['right'] + $margin, 'bottom' => $cut_rect['bottom'] + $margin);
if ($cut_rect['left'] < 0) {
$cut_rect['left'] = 0;
}
if ($cut_rect['top'] < 0) {
$cut_rect['top'] = 0;
}
if ($cut_rect['right'] >= $img->getWidth()) {
$cut_rect['right'] = $img->getWidth() - 1;
}
if ($cut_rect['bottom'] >= $img->getHeight()) {
$cut_rect['bottom'] = $img->getHeight() - 1;
}
return $img->crop($cut_rect['left'], $cut_rect['top'], $cut_rect['right'] - $cut_rect['left'] + 1, $cut_rect['bottom'] - $cut_rect['top'] + 1);
}
/**
* Returns sharpened image
*
* @param \WideImage\Image $image
* @param float $amount
* @param int $radius
* @param float $threshold
* @return \WideImage\Image
*/
public function execute($image, $amount, $radius, $threshold)
{
// Attempt to calibrate the parameters to Photoshop:
if ($amount > 500) {
$amount = 500;
}
$amount = $amount * 0.016;
if ($radius > 50) {
$radius = 50;
}
$radius = $radius * 2;
if ($threshold > 255) {
$threshold = 255;
}
$radius = abs(round($radius));
// Only integers make sense.
if ($radius == 0) {
return $image;
}
// Gaussian blur matrix
$matrix = array([1, 2, 1], [2, 4, 2], [1, 2, 1]);
$blurred = $image->applyConvolution($matrix, 16, 0);
if ($threshold > 0) {
// Calculate the difference between the blurred pixels and the original
// and set the pixels
for ($x = 0; $x < $image->getWidth(); $x++) {
for ($y = 0; $y < $image->getHeight(); $y++) {
$rgbOrig = $image->getRGBAt($x, $y);
$rOrig = $rgbOrig['red'];
$gOrig = $rgbOrig['green'];
$bOrig = $rgbOrig['blue'];
$rgbBlur = $blurred->getRGBAt($x, $y);
$rBlur = $rgbBlur['red'];
$gBlur = $rgbBlur['green'];
$bBlur = $rgbBlur['blue'];
// When the masked pixels differ less from the original
// than the threshold specifies, they are set to their original value.
$rNew = abs($rOrig - $rBlur) >= $threshold ? max(0, min(255, $amount * ($rOrig - $rBlur) + $rOrig)) : $rOrig;
$gNew = abs($gOrig - $gBlur) >= $threshold ? max(0, min(255, $amount * ($gOrig - $gBlur) + $gOrig)) : $gOrig;
$bNew = abs($bOrig - $bBlur) >= $threshold ? max(0, min(255, $amount * ($bOrig - $bBlur) + $bOrig)) : $bOrig;
$rgbNew = array('red' => $rNew, 'green' => $gNew, 'blue' => $bNew, 'alpha' => 0);
if ($rOrig != $rNew || $gOrig != $gNew || $bOrig != $bNew) {
$image->setRGBAt($x, $y, $rgbNew);
}
}
}
} else {
$w = $image->getWidth();
$h = $image->getHeight();
for ($x = 0; $x < $w; $x++) {
for ($y = 0; $y < $h; $y++) {
$rgbOrig = $image->getRGBAt($x, $y);
$rOrig = $rgbOrig['red'];
$gOrig = $rgbOrig['green'];
$bOrig = $rgbOrig['blue'];
$rgbBlur = $blurred->getRGBAt($x, $y);
$rBlur = $rgbBlur['red'];
$gBlur = $rgbBlur['green'];
$bBlur = $rgbBlur['blue'];
$rNew = static::bit($amount * ($rOrig - $rBlur) + $rOrig);
$gNew = static::bit($amount * ($gOrig - $gBlur) + $gOrig);
$bNew = static::bit($amount * ($bOrig - $bBlur) + $bOrig);
$rgbNew = array('red' => $rNew, 'green' => $gNew, 'blue' => $bNew, 'alpha' => 0);
$image->setRGBAt($x, $y, $rgbNew);
}
}
}
return $image;
}
/**
* Creates the object
*
* @param resource $handle
*/
public function __construct($handle)
{
parent::__construct($handle);
$this->alphaBlending(false);
$this->saveAlpha(true);
}
/**
* Copies this image onto another image
*
* @param \WideImage\Image $dest
* @param int $left
* @param int $top
**/
public function copyTo($dest, $left = 0, $top = 0)
{
if (!imagecopy($dest->getHandle(), $this->handle, $left, $top, 0, 0, $this->getWidth(), $this->getHeight())) {
throw new GDFunctionResultException("imagecopy() returned false");
}
}
/**
* Creates a canvas object that writes to the image passed as a parameter
*
* Shouldn't be used directly, use \WideImage\Image::getCanvas() instead.
*
* @param \WideImage\Image $img Image object
*/
public function __construct($img)
{
$this->handle = $img->getHandle();
$this->image = $img;
}
/**
* @param \WideImage\Image $image
* @param int $radius
* @param int $color
* @param int $smoothness
* @return \WideImage\Image
*/
public function execute($image, $radius, $color, $smoothness, $corners)
{
if ($smoothness < 1) {
$sample_ratio = 1;
} elseif ($smoothness > 16) {
$sample_ratio = 16;
} else {
$sample_ratio = $smoothness;
}
$corner = WideImage::createTrueColorImage($radius * $sample_ratio, $radius * $sample_ratio);
if ($color === null) {
imagepalettecopy($corner->getHandle(), $image->getHandle());
$bg_color = $corner->allocateColor(0, 0, 0);
$corner->fill(0, 0, $bg_color);
$fg_color = $corner->allocateColor(255, 255, 255);
$corner->getCanvas()->filledEllipse($radius * $sample_ratio, $radius * $sample_ratio, $radius * 2 * $sample_ratio, $radius * 2 * $sample_ratio, $fg_color);
$corner = $corner->resize($radius, $radius);
$result = $image->asTrueColor();
$tc = $result->getTransparentColor();
if ($tc == -1) {
$tc = $result->allocateColorAlpha(255, 255, 255, 127);
imagecolortransparent($result->getHandle(), $tc);
$result->setTransparentColor($tc);
}
if ($corners & WideImage::SIDE_TOP_LEFT || $corners & WideImage::SIDE_LEFT || $corners & WideImage::SIDE_TOP) {
$result = $result->applyMask($corner, -1, -1);
}
$corner = $corner->rotate(90);
if ($corners & WideImage::SIDE_TOP_RIGHT || $corners & WideImage::SIDE_TOP || $corners & WideImage::SIDE_RIGHT) {
$result = $result->applyMask($corner, $result->getWidth() - $corner->getWidth() + 1, -1, 100);
}
$corner = $corner->rotate(90);
if ($corners & WideImage::SIDE_BOTTOM_RIGHT || $corners & WideImage::SIDE_RIGHT || $corners & WideImage::SIDE_BOTTOM) {
$result = $result->applyMask($corner, $result->getWidth() - $corner->getWidth() + 1, $result->getHeight() - $corner->getHeight() + 1, 100);
}
$corner = $corner->rotate(90);
if ($corners & WideImage::SIDE_BOTTOM_LEFT || $corners & WideImage::SIDE_LEFT || $corners & WideImage::SIDE_BOTTOM) {
$result = $result->applyMask($corner, -1, $result->getHeight() - $corner->getHeight() + 1, 100);
}
return $result;
} else {
$bg_color = $color;
$corner->fill(0, 0, $bg_color);
$fg_color = $corner->allocateColorAlpha(127, 127, 127, 127);
$corner->getCanvas()->filledEllipse($radius * $sample_ratio, $radius * $sample_ratio, $radius * 2 * $sample_ratio, $radius * 2 * $sample_ratio, $fg_color);
$corner = $corner->resize($radius, $radius);
$result = $image->copy();
if ($corners & WideImage::SIDE_TOP_LEFT || $corners & WideImage::SIDE_LEFT || $corners & WideImage::SIDE_TOP) {
$result = $result->merge($corner, -1, -1, 100);
}
$corner = $corner->rotate(90);
if ($corners & WideImage::SIDE_TOP_RIGHT || $corners & WideImage::SIDE_TOP || $corners & WideImage::SIDE_RIGHT) {
$result = $result->merge($corner, $result->getWidth() - $corner->getWidth() + 1, -1, 100);
}
$corner = $corner->rotate(90);
if ($corners & WideImage::SIDE_BOTTOM_RIGHT || $corners & WideImage::SIDE_RIGHT || $corners & WideImage::SIDE_BOTTOM) {
$result = $result->merge($corner, $result->getWidth() - $corner->getWidth() + 1, $result->getHeight() - $corner->getHeight() + 1, 100);
}
$corner = $corner->rotate(90);
if ($corners & WideImage::SIDE_BOTTOM_LEFT || $corners & WideImage::SIDE_LEFT || $corners & WideImage::SIDE_BOTTOM) {
$result = $result->merge($corner, -1, $result->getHeight() - $corner->getHeight() + 1, 100);
}
return $result;
}
}
/**
* Returns an image with a resized canvas
*
* The image is filled with $color. Use $scale to determine, when to resize.
*
* @param \WideImage\Image $img
* @param smart_coordinate $width
* @param smart_coordinate $height
* @param smart_coordinate $left
* @param smart_coordinate $top
* @param int $color
* @param string $scale 'up', 'down', 'any'
* @param boolean $merge
* @return \WideImage\Image
*/
public function execute($img, $width, $height, $left, $top, $color, $scale, $merge)
{
$new_width = Coordinate::fix($width, $img->getWidth());
$new_height = Coordinate::fix($height, $img->getHeight());
if ($scale == 'down') {
$new_width = min($new_width, $img->getWidth());
$new_height = min($new_height, $img->getHeight());
} elseif ($scale == 'up') {
$new_width = max($new_width, $img->getWidth());
$new_height = max($new_height, $img->getHeight());
}
$new = WideImage::createTrueColorImage($new_width, $new_height);
if ($img->isTrueColor()) {
if ($color === null) {
$color = $new->allocateColorAlpha(0, 0, 0, 127);
}
} else {
imagepalettecopy($new->getHandle(), $img->getHandle());
if ($img->isTransparent()) {
$new->copyTransparencyFrom($img);
$tc_rgb = $img->getTransparentColorRGB();
$t_color = $new->allocateColorAlpha($tc_rgb);
}
if ($color === null) {
if ($img->isTransparent()) {
$color = $t_color;
} else {
$color = $new->allocateColorAlpha(255, 0, 127, 127);
}
imagecolortransparent($new->getHandle(), $color);
}
}
$new->fill(0, 0, $color);
$x = Coordinate::fix($left, $new->getWidth(), $img->getWidth());
$y = Coordinate::fix($top, $new->getHeight(), $img->getHeight());
// blending for truecolor images
if ($img->isTrueColor()) {
$new->alphaBlending($merge);
}
// not-blending for palette images
if (!$merge && !$img->isTrueColor() && isset($t_color)) {
$new->getCanvas()->filledRectangle($x, $y, $x + $img->getWidth(), $y + $img->getHeight(), $t_color);
}
$img->copyTo($new, $x, $y);
return $new;
}