/** * Returns a cropped image * * @param WideImage_Image $img * @param smart_coordinate $left * @param smart_coordinate $top * @param smart_coordinate $width * @param smart_coordinate $height * @return WideImage_Image */ function execute($img, $left, $top, $width, $height) { $width = WideImage_Coordinate::fix($width, $img->getWidth(), $width); $height = WideImage_Coordinate::fix($height, $img->getHeight(), $height); $left = WideImage_Coordinate::fix($left, $img->getWidth(), $width); $top = WideImage_Coordinate::fix($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 WideImage_Exception("Can't crop outside of an image."); } $new = $img->doCreate($width, $height); if ($img->isTransparent() || $img instanceof WideImage_PaletteImage) { $new->copyTransparencyFrom($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; }
/** * 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 $scale 'up', 'down', 'any' * @return WideImage_Image */ function execute($img, $width, $height, $left, $top, $color, $scale) { $new_width = WideImage_Coordinate::fix($width, $img->getWidth()); $new_height = WideImage_Coordinate::fix($width, $img->getHeight()); if ($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(), $img->getHandle()); if ($color === null) { if ($img->isTransparent()) { $new->copyTransparencyFrom($img); $tc_rgb = $img->getTransparentColorRGB(); $color = $new->allocateColorAlpha($tc_rgb); } else { $color = $new->allocateColorAlpha(255, 0, 127, 127); } imagecolortransparent($new->getHandle(), $color); } } $new->fill(0, 0, $color); $x = WideImage_Coordinate::fix($left, $new->getWidth(), $img->getWidth()); $y = WideImage_Coordinate::fix($top, $new->getHeight(), $img->getHeight()); $img->copyTo($new, $x, $y); return $new; }
/** * Applies a mask on the copy of source image * * @param WideImage_Image $image * @param WideImage_Image $mask * @param smart_coordinate $left * @param smart_coordinate $top * @return WideImage_Image */ function execute($image, $mask, $left = 0, $top = 0) { $left = WideImage_Coordinate::fix($image->getWidth(), $left); $top = WideImage_Coordinate::fix($image->getHeight(), $top); $width = $image->getWidth(); if ($width > $mask->getWidth()) { $width = $mask->getWidth(); } $height = $image->getHeight(); if ($height > $mask->getHeight()) { $height = $mask->getHeight(); } $result = $image->asTrueColor(); $result->alphaBlending(false); $result->saveAlpha(true); $srcTransparentColor = $image->getTransparentColor(); if ($srcTransparentColor >= 0) { $trgb = $image->getColorRGB($srcTransparentColor); $trgb['alpha'] = 127; $destTransparentColor = $result->allocateColorAlpha($trgb); $result->setTransparentColor($destTransparentColor); } else { $destTransparentColor = $result->allocateColorAlpha(255, 255, 255, 127); } for ($x = 0; $x < $width; $x++) { for ($y = 0; $y < $height; $y++) { if ($left + $x < $image->getWidth() && $top + $y < $image->getHeight()) { $srcColor = $image->getColorAt($left + $x, $top + $y); if ($srcColor == $srcTransparentColor) { $destColor = $destTransparentColor; } else { $maskRGB = $mask->getRGBAt($x, $y); if ($maskRGB['red'] == 0) { $destColor = $destTransparentColor; } elseif ($srcColor >= 0) { $imageRGB = $image->getRGBAt($left + $x, $top + $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; } } $result->setColorAt($left + $x, $top + $y, $destColor); } } } return $result; }
/** * Applies a mask on the copy of source image * * @param WideImage_Image $image * @param WideImage_Image $mask * @param smart_coordinate $left * @param smart_coordinate $top * @return WideImage_Image */ function execute($image, $mask, $left = 0, $top = 0) { $left = WideImage_Coordinate::fix($left, $image->getWidth(), $mask->getWidth()); $top = WideImage_Coordinate::fix($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) { # this was here. works without. #$trgb = $image->getColorRGB($srcTransparentColor); #$trgb['alpha'] = 127; #$destTransparentColor = $result->allocateColorAlpha($trgb); #$result->setTransparentColor($destTransparentColor); $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; }
/** * 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) { $width = WideImage_Coordinate::fix($width, $img->getWidth()); $rx = $img->getWidth() / $width; } else { $rx = null; } if ($height !== null) { $height = WideImage_Coordinate::fix($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'; } $dim = array(); if ($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() / $ratio); } else { throw new WideImage_Operation_InvalidFitMethodException("{$fit} is not a valid resize-fit method."); } return $dim; }
/** * Returns a mask * * @param WideImage_Image $image * @return WideImage_Image */ function execute($image) { $width = $image->getWidth(); $height = $image->getHeight(); $mask = WideImage_TrueColorImage::create($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 merged image * * @param WideImage_Image $base * @param WideImage_Image $overlay * @param smart_coordinate $left * @param smart_coordinate $top * @param numeric $pct * @return WideImage_Image */ function execute($base, $overlay, $left, $top, $pct) { $x = WideImage_Coordinate::fix($base->getWidth(), $left); $y = WideImage_Coordinate::fix($base->getHeight(), $top); $result = $base->asTrueColor(); $result->alphaBlending(true); $result->saveAlpha(true); if ($pct == 0) { return $result; } if ($pct < 100) { imagecopymerge($result->getHandle(), $overlay->getHandle(), $x, $y, 0, 0, $overlay->getWidth(), $overlay->getHeight(), $pct); } else { imagecopy($result->getHandle(), $overlay->getHandle(), $x, $y, 0, 0, $overlay->getWidth(), $overlay->getHeight()); } 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 $merge * @return WideImage_Image */ function execute($img, $width, $height, $left, $top, $color, $scale, $merge) { $new_width = WideImage_Coordinate::fix($width, $img->getWidth()); $new_height = WideImage_Coordinate::fix($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); $x = WideImage_Coordinate::fix($left, $new->getWidth(), $img->getWidth()); $y = WideImage_Coordinate::fix($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; }
/** * Returns a mirrored image * * @param WideImage_Image $image * @return WideImage_Image */ function execute($image) { $new = $image->copy(); $width = $image->getWidth(); $height = $image->getHeight(); for ($x = 0; $x < $width; $x++) { imagecopy($new->getHandle(), $image->getHandle(), $x, 0, $width - $x - 1, 0, 1, $height); } return $new; }
/** * Returns a flipped image * * @param WideImage_Image $image * @return WideImage_Image */ function execute($image) { $new = $image->copy(); $width = $image->getWidth(); $height = $image->getHeight(); for ($y = 0; $y < $height; $y++) { imagecopy($new->getHandle(), $image->getHandle(), 0, $y, 0, $height - $y - 1, $width, 1); } return $new; }
/** * Apply the manipulation with the setup options to the passed in image. * This does not do any memory manipulation * * @param WideImage_Image $image * @return WideImage_Image */ public function &apply(WideImage_Image &$image) { if (!$this->isSetup()) { throw new RokGallery_Manipulation_Exception(rc__('ROKGALLERY_MANIPULATION_WAS_NOT_SETUP_PRIOR_TO_APPLYING')); } if ($this->left == 0 && $this->top == 0 && $this->width == 0 && $this->height == 0) { $this->width = $image->getWidth(); $this->height = $image->getHeight(); } $return_image = $image->crop($this->left, $this->top, $this->width, $this->height); return $return_image; }
/** * 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) { $x = WideImage_Coordinate::fix($left, $base->getWidth(), $overlay->getWidth()); $y = WideImage_Coordinate::fix($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(), $pct)) { throw new WideImage_GDFunctionResultException('imagecopymerge() returned false'); } } else { if (!imagecopy($result->getHandle(), $overlay->getHandle(), $x, $y, 0, 0, $overlay->getWidth(), $overlay->getHeight())) { throw new WideImage_GDFunctionResultException('imagecopy() returned false'); } } return $result; }
/** * Returns a mirrored image * * @param WideImage_Image $image * @return WideImage_Image */ function execute($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; $x++) { imagecopy($new->getHandle(), $image->getHandle(), $x, 0, $width - $x - 1, 0, 1, $height); } return $new; }
/** * Returns a flipped image * * @param WideImage_Image $image * @return WideImage_Image */ function execute($image) { $new = $image->copy(); $width = $image->getWidth(); $height = $image->getHeight(); if ($new->isTransparent()) { imagefilledrectangle($new->getHandle(), 0, 0, $width, $height, $new->getTransparentColor()); } for ($y = 0; $y < $height; $y++) { imagecopy($new->getHandle(), $image->getHandle(), 0, $y, 0, $height - $y - 1, $width, 1); } return $new; }
/** * Returns a mirrored image * * @param WideImage_Image $image * @return WideImage_Image */ function execute($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 WideImage_GDFunctionResultException("imagecopy() returned false"); } } return $new; }
/** * 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); $obox = ['left' => min($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']); $x = WideImage_Coordinate::fix($x, $image->getWidth(), $obox['width']); $y = WideImage_Coordinate::fix($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); }
/** * Returns a flipped 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, $new->getTransparentColor()); } for ($y = 0; $y < $height; ++$y) { if (!imagecopy($new->getHandle(), $image->getHandle(), 0, $y, 0, $height - $y - 1, $width, 1)) { throw new WideImage_GDFunctionResultException('imagecopy() returned false'); } } return $new; }
/** * Returns image with every pixel changed by specififed function * * @param WideImage_Image $image * @param str $function * @param int $value * @return WideImage_Image */ function filter($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 = $rgb & 0xff; self::$function($r, $g, $b, $value); $color = imagecolorallocatealpha($image->getHandle(), $r, $g, $b, $a); imagesetpixel($image->getHandle(), $x, $y, $color); } } return $image; }
/** * Returns an image with only specified channels copied * * @param WideImage_Image $img * @param array $channels * @return WideImage_Image */ function execute($img, $channels) { $blank = array('red' => 0, 'green' => 0, 'blue' => 0, 'alpha' => 0); $width = $img->getWidth(); $height = $img->getHeight(); $copy = WideImage_TrueColorImage::create($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 sharpened image * * @param WideImage_Image $image * @param float $amount * @param int $radius * @param float $threshold * @return WideImage_Image */ function execute($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(array(1, 2, 1), array(2, 4, 2), array(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 = $amount * ($rOrig - $rBlur) + $rOrig; if ($rNew > 255) { $rNew = 255; } elseif ($rNew < 0) { $rNew = 0; } $gNew = $amount * ($gOrig - $gBlur) + $gOrig; if ($gNew > 255) { $gNew = 255; } elseif ($gNew < 0) { $gNew = 0; } $bNew = $amount * ($bOrig - $bBlur) + $bOrig; if ($bNew > 255) { $bNew = 255; } elseif ($bNew < 0) { $bNew = 0; } $rgbNew = array("red" => $rNew, "green" => $gNew, "blue" => $bNew, "alpha" => 0); $image->setRGBAt($x, $y, $rgbNew); } } } return $image; }
/** * Fix a coordinate for a resize (limits by image weight and height) * * @param WideImage_Image $img * @param int $width Width of the image * @param int $height Height of the image * @return array An array(width, height), fixed for resizing */ static function fixForResize($img, $width, $height) { if ($width === null && $height === null) { return array($img->getWidth(), $img->getHeight()); } if ($width !== null) { $width = self::fix($width, $img->getWidth()); } if ($height !== null) { $height = self::fix($height, $img->getHeight()); } if ($width === null) { $width = floor($img->getWidth() * $height / $img->getHeight()); } if ($height === null) { $height = floor($img->getHeight() * $width / $img->getWidth()); } return array($width, $height); }
/** * 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 $base_color The color that will get cropped * @return WideImage_Image resulting auto-cropped image */ function execute($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 image height * * @return int */ public function getHeight() { return $this->image->getHeight(); }