1 <?php
  2     /**
  3  * @author Gasper Kozak
  4  * @copyright 2007-2011
  5 
  6     This file is part of WideImage.
  7         
  8     WideImage is free software; you can redistribute it and/or modify
  9     it under the terms of the GNU Lesser General Public License as published by
 10     the Free Software Foundation; either version 2.1 of the License, or
 11     (at your option) any later version.
 12         
 13     WideImage is distributed in the hope that it will be useful,
 14     but WITHOUT ANY WARRANTY; without even the implied warranty of
 15     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 16     GNU Lesser General Public License for more details.
 17         
 18     You should have received a copy of the GNU Lesser General Public License
 19     along with WideImage; if not, write to the Free Software
 20     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 21 
 22     * @package Internal/Operations
 23   **/
 24     
 25     /**
 26      * ApplyMask operation class
 27      * 
 28      * @package Internal/Operations
 29      */
 30     class WideImage_Operation_RoundCorners
 31     {
 32         /**
 33          * @param WideImage_Image $image
 34          * @param int $radius
 35          * @param int $color
 36          * @param int $smoothness
 37          * @return WideImage_Image
 38          */
 39         function execute($image, $radius, $color, $smoothness, $corners)
 40         {
 41             if ($smoothness < 1)
 42                 $sample_ratio = 1;
 43             elseif ($smoothness > 16)
 44                 $sample_ratio = 16;
 45             else
 46                 $sample_ratio = $smoothness;
 47             
 48             $corner = WideImage::createTrueColorImage($radius * $sample_ratio, $radius * $sample_ratio);
 49             if ($color === null)
 50             {
 51                 imagepalettecopy($corner->getHandle(), $image->getHandle());
 52                 $bg_color = $corner->allocateColor(0, 0, 0);
 53                 
 54                 $corner->fill(0, 0, $bg_color);
 55                 $fg_color = $corner->allocateColor(255, 255, 255);
 56                 $corner->getCanvas()->filledEllipse($radius * $sample_ratio, $radius * $sample_ratio, $radius * 2 * $sample_ratio, $radius * 2 * $sample_ratio, $fg_color);
 57                 $corner = $corner->resize($radius, $radius);
 58                 
 59                 $result = $image->asTrueColor();
 60                 
 61                 $tc = $result->getTransparentColor();
 62                 if ($tc == -1)
 63                 {
 64                     $tc = $result->allocateColorAlpha(255, 255, 255, 127);
 65                     imagecolortransparent($result->getHandle(), $tc);
 66                     $result->setTransparentColor($tc);
 67                 }
 68                 
 69                 if ($corners & WideImage::SIDE_TOP_LEFT || $corners & WideImage::SIDE_LEFT || $corners & WideImage::SIDE_TOP)
 70                     $result = $result->applyMask($corner, -1, -1);
 71                 
 72                 $corner = $corner->rotate(90);
 73                 if ($corners & WideImage::SIDE_TOP_RIGHT || $corners & WideImage::SIDE_TOP || $corners & WideImage::SIDE_RIGHT)
 74                     $result = $result->applyMask($corner, $result->getWidth() - $corner->getWidth() + 1, -1, 100);
 75                 
 76                 $corner = $corner->rotate(90);
 77                 if ($corners & WideImage::SIDE_BOTTOM_RIGHT || $corners & WideImage::SIDE_RIGHT || $corners & WideImage::SIDE_BOTTOM)
 78                     $result = $result->applyMask($corner, $result->getWidth() - $corner->getWidth() + 1, $result->getHeight() - $corner->getHeight() + 1, 100);
 79                 
 80                 $corner = $corner->rotate(90);
 81                 if ($corners & WideImage::SIDE_BOTTOM_LEFT || $corners & WideImage::SIDE_LEFT || $corners & WideImage::SIDE_BOTTOM)
 82                     $result = $result->applyMask($corner, -1, $result->getHeight() - $corner->getHeight() + 1, 100);
 83                 
 84                 return $result;
 85             }
 86             else
 87             {
 88                 $bg_color = $color;
 89                 
 90                 $corner->fill(0, 0, $bg_color);
 91                 $fg_color = $corner->allocateColorAlpha(127, 127, 127, 127);
 92                 $corner->getCanvas()->filledEllipse($radius * $sample_ratio, $radius * $sample_ratio, $radius * 2 * $sample_ratio, $radius * 2 * $sample_ratio, $fg_color);
 93                 $corner = $corner->resize($radius, $radius);
 94                 
 95                 $result = $image->copy();
 96                 if ($corners & WideImage::SIDE_TOP_LEFT || $corners & WideImage::SIDE_LEFT || $corners & WideImage::SIDE_TOP)
 97                     $result = $result->merge($corner, -1, -1, 100);
 98                 
 99                 $corner = $corner->rotate(90);
100                 if ($corners & WideImage::SIDE_TOP_RIGHT || $corners & WideImage::SIDE_TOP || $corners & WideImage::SIDE_RIGHT)
101                     $result = $result->merge($corner, $result->getWidth() - $corner->getWidth() + 1, -1, 100);
102                 
103                 $corner = $corner->rotate(90);
104                 if ($corners & WideImage::SIDE_BOTTOM_RIGHT || $corners & WideImage::SIDE_RIGHT || $corners & WideImage::SIDE_BOTTOM)
105                     $result = $result->merge($corner, $result->getWidth() - $corner->getWidth() + 1, $result->getHeight() - $corner->getHeight() + 1, 100);
106                 
107                 $corner = $corner->rotate(90);
108                 if ($corners & WideImage::SIDE_BOTTOM_LEFT || $corners & WideImage::SIDE_LEFT || $corners & WideImage::SIDE_BOTTOM)
109                     $result = $result->merge($corner, -1, $result->getHeight() - $corner->getHeight() + 1, 100);
110                 
111                 return $result;
112             }
113         }
114     }
115