File indexing completed on 2025-01-26 05:29:14

 <?php
 
 namespace Intervention\Image\Gd\Commands;
 
 use Intervention\Image\Gd\Color;
 
 class TrimCommand extends ResizeCommand
 {
     /**
      * Trims away parts of an image
      *
      * @param  \Intervention\Image\Image $image
      * @return boolean
      */
     public function execute($image)
     {
         $base = $this->argument(0)->type('string')->value();
         $away = $this->argument(1)->value();
         $tolerance = $this->argument(2)->type('numeric')->value(0);
         $feather = $this->argument(3)->type('numeric')->value(0);
 
         $width = $image->getWidth();
         $height = $image->getHeight();
 
         // default values
         $checkTransparency = false;
 
         // define borders to trim away
         if (is_null($away)) {
             $away = ['top', 'right', 'bottom', 'left'];
         } elseif (is_string($away)) {
             $away = [$away];
         }
 
         // lower border names
         foreach ($away as $key => $value) {
             $away[$key] = strtolower($value);
         }
 
         // define base color position
         switch (strtolower($base)) {
             case 'transparent':
             case 'trans':
                 $checkTransparency = true;
                 $base_x = 0;
                 $base_y = 0;
                 break;
 
             case 'bottom-right':
             case 'right-bottom':
                 $base_x = $width - 1;
                 $base_y = $height - 1;
                 break;
 
             default:
             case 'top-left':
             case 'left-top':
                 $base_x = 0;
                 $base_y = 0;
                 break;
         }
 
         // pick base color
         if ($checkTransparency) {
             $color = new Color; // color will only be used to compare alpha channel
         } else {
             $color = $image->pickColor($base_x, $base_y, 'object');
         }
 
         $top_x = 0;
         $top_y = 0;
         $bottom_x = $width;
         $bottom_y = $height;
 
         // search upper part of image for colors to trim away
         if (in_array('top', $away)) {
 
             for ($y=0; $y < ceil($height/2); $y++) {
                 for ($x=0; $x < $width; $x++) {
 
                     $checkColor = $image->pickColor($x, $y, 'object');
 
                     if ($checkTransparency) {
                         $checkColor->r = $color->r;
                         $checkColor->g = $color->g;
                         $checkColor->b = $color->b;
                     }
 
                     if ($color->differs($checkColor, $tolerance)) {
                         $top_y = max(0, $y - $feather);
                         break 2;
                     }
 
                 }
             }
 
         }
 
         // search left part of image for colors to trim away
         if (in_array('left', $away)) {
 
             for ($x=0; $x < ceil($width/2); $x++) {
                 for ($y=$top_y; $y < $height; $y++) {
 
                     $checkColor = $image->pickColor($x, $y, 'object');
 
                     if ($checkTransparency) {
                         $checkColor->r = $color->r;
                         $checkColor->g = $color->g;
                         $checkColor->b = $color->b;
                     }
 
                     if ($color->differs($checkColor, $tolerance)) {
                         $top_x = max(0, $x - $feather);
                         break 2;
                     }
 
                 }
             }
 
         }
 
         // search lower part of image for colors to trim away
         if (in_array('bottom', $away)) {
 
             for ($y=($height-1); $y >= floor($height/2)-1; $y--) {
                 for ($x=$top_x; $x < $width; $x++) {
 
                     $checkColor = $image->pickColor($x, $y, 'object');
 
                     if ($checkTransparency) {
                         $checkColor->r = $color->r;
                         $checkColor->g = $color->g;
                         $checkColor->b = $color->b;
                     }
 
                     if ($color->differs($checkColor, $tolerance)) {
                         $bottom_y = min($height, $y+1 + $feather);
                         break 2;
                     }
 
                 }
             }
 
         }
 
         // search right part of image for colors to trim away
         if (in_array('right', $away)) {
 
             for ($x=($width-1); $x >= floor($width/2)-1; $x--) {
                 for ($y=$top_y; $y < $bottom_y; $y++) {
 
                     $checkColor = $image->pickColor($x, $y, 'object');
 
                     if ($checkTransparency) {
                         $checkColor->r = $color->r;
                         $checkColor->g = $color->g;
                         $checkColor->b = $color->b;
                     }
 
                     if ($color->differs($checkColor, $tolerance)) {
                         $bottom_x = min($width, $x+1 + $feather);
                         break 2;
                     }
 
                 }
             }
 
         }
 
 
         // trim parts of image
         return $this->modify($image, 0, 0, $top_x, $top_y, ($bottom_x-$top_x), ($bottom_y-$top_y), ($bottom_x-$top_x), ($bottom_y-$top_y));
 
     }
 }