text: /**
   * Copyright (c) 2012 Muh Hon Cheng
   * Created by honcheng on 6/2/12.
   *
   * Permission is hereby granted, free of charge, to any person obtaining
   * a copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sublicense, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject
   * to the following conditions:
   *
   * The above copyright notice and this permission notice shall be
   * included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT
   * WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
   * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR
   * PURPOSE AND NONINFRINGEMENT. IN NO EVENT
   * SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
   * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
   * TORT OR OTHERWISE, ARISING FROM, OUT OF OR
   * IN CONNECTION WITH THE SOFTWARE OR
   * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   *
   * @author 		Muh Hon Cheng <honcheng@gmail.com>
   * @copyright	2012	Muh Hon Cheng
   * @version
   *
   */
  
  
  #import "UIView+Screenshot.h"
  #import <QuartzCore/QuartzCore.h>
  
  @implementation UIView (Screenshot)
  
  - (UIImage*)screenshotWithOptimization:(BOOL)optimized
  {
      if (optimized)
      {
          // take screenshot of the view
          if ([self isKindOfClass:NSClassFromString(@"MKMapView")])
          {
              if ([[[UIDevice currentDevice] systemVersion] floatValue]>=6.0)
              {
                  // in iOS6, there is no problem using a non-retina screenshot in a retina display screen
                  UIGraphicsBeginImageContextWithOptions(self.frame.size, NO, 1.0);
              }
              else
              {
                  // if the view is a mapview in iOS5.0 and below, screenshot has to take the screen scale into consideration
                  // else, the screen shot in retina display devices will be of a less detail map (note, it is not the size of the screenshot, but it is the level of detail of the screenshot
                  UIGraphicsBeginImageContextWithOptions(self.frame.size, NO, 0.0);
              }
          }
          else
          {
              // for performance consideration, everything else other than mapview will use a lower quality screenshot
              UIGraphicsBeginImageContext(self.frame.size);
          }
      }
      else
      {
          UIGraphicsBeginImageContextWithOptions(self.frame.size, NO, 0.0);
      }
      
      
      
      if (UIGraphicsGetCurrentContext()==nil)
      {
          NSLog(@"UIGraphicsGetCurrentContext() is nil. You may have a UIView with CGRectZero");
          return nil;
      }
      else
      {
          [self.layer renderInContext:UIGraphicsGetCurrentContext()];
          
          UIImage *screenshot = UIGraphicsGetImageFromCurrentImageContext();
          UIGraphicsEndImageContext();
          
  //        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
  //        NSString *documentsDirectory = [paths objectAtIndex:0];
  //        NSString *testScreenshot = [documentsDirectory stringByAppendingPathComponent:@"test.png"];
  //        NSData *imageData = UIImagePNGRepresentation(screenshot);
  //        [imageData writeToFile:testScreenshot atomically:YES];
          
          return screenshot;
      }
      
  }
  
  - (UIImage*)screenshot
  {
      return [self screenshotWithOptimization:YES];
  }
  
  @end
  