Merge pull request #3 from xinsight/master

limit image size for lorempixel

PlaceKit/UIImageView+PlaceKit.h

@@ -43,6 +43,7 @@
 /** Place a random image in a specific category with a given size from lorempixel.com
  
  @param size The size in points of your random image
+ @warning Image size will be clamped to max size supported by service
  @param category The category that you would like your image to be chosen from. A full list of valid categories can be found at http://lorempixel.com
  */
 - (void)placeRandomImageWithSize:(CGSize)size
@@ -51,6 +52,7 @@
 /** Place a random greyscale image in a specific category with a given size from lorempixel.com
  
  @param size The size in points of your random greyscale image
+ @warning Image size will be clamped to max size supported by service
  @param category The category that you would like your image to be chosen from. A full list of valid categories can be found at http://lorempixel.com
  */
 - (void)placeRandomGreyscaleImageWithSize:(CGSize)size
@@ -59,12 +61,14 @@
 /** Place a random image with a given size from lorempixel.com
  
  @param size The size in points of your random image
+ @warning Image size will be clamped to max size supported by service
  */
 - (void)placeRandomImageWithSize:(CGSize)size;
 
 /** Place a random greyscale image with a given size from lorempixel.com
  
  @param size The size in points of your random greyscale image
+ @warning Image size will be clamped to max size supported by service
  */
 - (void)placeRandomGreyscaleImageWithSize:(CGSize)size;
 
@@ -89,20 +93,24 @@
 /** Place a random image in a specific category with an inherited size from lorempixel.com
  
  @param category The category that you would like your image to be chosen from. A full list of valid categories can be found at http://lorempixel.com
+ @warning Image size will be clamped to max size supported by service
  */
 - (void)placeRandomImageFromCategory:(NSString *)category;
 
 /** Place a random greyscale image in a specific category with an inherited size from lorempixel.com
  
  @param category The category that you would like your image to be chosen from. A full list of valid categories can be found at http://lorempixel.com
+ @warning Image size will be clamped to max size supported by service
  */
 - (void)placeRandomGreyscaleImageFromCategory:(NSString *)category;
 
 /** Place a random image with an inherited size from lorempixel.com
+ @warning Image size will be clamped to max size supported by service
  */
 - (void)placeRandomImage;
 
 /** Place a random greyscale image with an inherited size from lorempixel.com
+ @warning Image size will be clamped to max size supported by service
  */
 - (void)placeRandomGreyscaleImage;
 

PlaceKit/UIImageView+PlaceKit.m

@@ -80,7 +80,18 @@ - (void)placeRandomGreyscaleImage{
 #pragma mark - Common
 - (void)placeImageWithURLString:(NSString *)path size:(CGSize)size{
     CGFloat screenScale = [[UIScreen mainScreen] scale];
-    NSString *urlString = [NSString stringWithFormat:path, size.width*screenScale, size.height*screenScale];
+    CGFloat w = size.width*screenScale;
+    CGFloat h = size.height*screenScale;
+    NSString *service = @"lorempixel.com";
+    if ([path rangeOfString:service].length > 0) {
+        CGFloat max = 1920.0f;
+        if (w > max || h > max) {
+          w = MIN(w,max);
+          h = MIN(h,max);
+          NSLog(@"%s: Warn: clamping image size to %@ max size. using %.0fx%.0f", __PRETTY_FUNCTION__, service, w, h);
+        }
+    }
+    NSString *urlString = [NSString stringWithFormat:path, w, h];
     NSURL *url = [NSURL URLWithString:urlString];
     [self setImageWithURL:url];
 }