Added the convenient transition with duration APIs

SDWebImage/Core/SDWebImageTransition.h

@@ -83,7 +83,7 @@ typedef void (^SDWebImageTransitionCompletionBlock)(BOOL finished);
  */
 @interface SDWebImageTransition (Conveniences)
 
-/// Fade transition.
+/// Fade-in transition.
 @property (nonatomic, class, nonnull, readonly) SDWebImageTransition *fadeTransition;
 /// Flip from left transition.
 @property (nonatomic, class, nonnull, readonly) SDWebImageTransition *flipFromLeftTransition;
@@ -98,6 +98,34 @@ typedef void (^SDWebImageTransitionCompletionBlock)(BOOL finished);
 /// Curl down transition.
 @property (nonatomic, class, nonnull, readonly) SDWebImageTransition *curlDownTransition;
 
+/// Fade-in transition with duration.
+/// @param duration transition duration, use ease-in-out
++ (nonnull instancetype)fadeTransitionWithDuration:(NSTimeInterval)duration NS_SWIFT_NAME(fade(duration:));
+
+/// Flip from left  transition with duration.
+/// @param duration transition duration, use ease-in-out
++ (nonnull instancetype)flipFromLeftTransitionWithDuration:(NSTimeInterval)duration NS_SWIFT_NAME(flipFromLeft(duration:));
+
+/// Flip from right transition with duration.
+/// @param duration transition duration, use ease-in-out
++ (nonnull instancetype)flipFromRightTransitionWithDuration:(NSTimeInterval)duration NS_SWIFT_NAME(flipFromRight(duration:));
+
+/// Flip from top transition with duration.
+/// @param duration transition duration, use ease-in-out
++ (nonnull instancetype)flipFromTopTransitionWithDuration:(NSTimeInterval)duration NS_SWIFT_NAME(flipFromTop(duration:));
+
+/// Flip from bottom transition with duration.
+/// @param duration transition duration, use ease-in-out
++ (nonnull instancetype)flipFromBottomTransitionWithDuration:(NSTimeInterval)duration NS_SWIFT_NAME(flipFromBottom(duration:));
+
+///  Curl up transition with duration.
+/// @param duration transition duration, use ease-in-out
++ (nonnull instancetype)curlUpTransitionWithDuration:(NSTimeInterval)duration NS_SWIFT_NAME(curlUp(duration:));
+
+/// Curl down transition with duration.
+/// @param duration transition duration, use ease-in-out
++ (nonnull instancetype)curlDownTransitionWithDuration:(NSTimeInterval)duration NS_SWIFT_NAME(curlDown(duration:));
+
 @end
 
 #endif

SDWebImage/Core/SDWebImageTransition.m

@@ -84,6 +84,10 @@ CATransition * SDTransitionFromAnimationOptions(SDWebImageAnimationOptions optio
 @implementation SDWebImageTransition (Conveniences)
 
 + (SDWebImageTransition *)fadeTransition {
+    return [self fadeTransitionWithDuration:0.5];
+}
+
++ (SDWebImageTransition *)fadeTransitionWithDuration:(NSTimeInterval)duration {
     SDWebImageTransition *transition = [SDWebImageTransition new];
 #if SD_UIKIT
     transition.animationOptions = UIViewAnimationOptionTransitionCrossDissolve | UIViewAnimationOptionAllowUserInteraction;
@@ -94,6 +98,10 @@ CATransition * SDTransitionFromAnimationOptions(SDWebImageAnimationOptions optio
 }
 
 + (SDWebImageTransition *)flipFromLeftTransition {
+    return [self flipFromLeftTransitionWithDuration:0.5];
+}
+
++ (SDWebImageTransition *)flipFromLeftTransitionWithDuration:(NSTimeInterval)duration {
     SDWebImageTransition *transition = [SDWebImageTransition new];
 #if SD_UIKIT
     transition.animationOptions = UIViewAnimationOptionTransitionFlipFromLeft | UIViewAnimationOptionAllowUserInteraction;
@@ -104,6 +112,10 @@ CATransition * SDTransitionFromAnimationOptions(SDWebImageAnimationOptions optio
 }
 
 + (SDWebImageTransition *)flipFromRightTransition {
+    return [self flipFromRightTransitionWithDuration:0.5];
+}
+
++ (SDWebImageTransition *)flipFromRightTransitionWithDuration:(NSTimeInterval)duration {
     SDWebImageTransition *transition = [SDWebImageTransition new];
 #if SD_UIKIT
     transition.animationOptions = UIViewAnimationOptionTransitionFlipFromRight | UIViewAnimationOptionAllowUserInteraction;
@@ -114,6 +126,10 @@ CATransition * SDTransitionFromAnimationOptions(SDWebImageAnimationOptions optio
 }
 
 + (SDWebImageTransition *)flipFromTopTransition {
+    return [self flipFromTopTransitionWithDuration:0.5];
+}
+
++ (SDWebImageTransition *)flipFromTopTransitionWithDuration:(NSTimeInterval)duration {
     SDWebImageTransition *transition = [SDWebImageTransition new];
 #if SD_UIKIT
     transition.animationOptions = UIViewAnimationOptionTransitionFlipFromTop | UIViewAnimationOptionAllowUserInteraction;
@@ -124,6 +140,10 @@ CATransition * SDTransitionFromAnimationOptions(SDWebImageAnimationOptions optio
 }
 
 + (SDWebImageTransition *)flipFromBottomTransition {
+    return [self flipFromBottomTransitionWithDuration:0.5];
+}
+
++ (SDWebImageTransition *)flipFromBottomTransitionWithDuration:(NSTimeInterval)duration {
     SDWebImageTransition *transition = [SDWebImageTransition new];
 #if SD_UIKIT
     transition.animationOptions = UIViewAnimationOptionTransitionFlipFromBottom | UIViewAnimationOptionAllowUserInteraction;
@@ -134,6 +154,10 @@ CATransition * SDTransitionFromAnimationOptions(SDWebImageAnimationOptions optio
 }
 
 + (SDWebImageTransition *)curlUpTransition {
+    return [self curlUpTransitionWithDuration:0.5];
+}
+
++ (SDWebImageTransition *)curlUpTransitionWithDuration:(NSTimeInterval)duration {
     SDWebImageTransition *transition = [SDWebImageTransition new];
 #if SD_UIKIT
     transition.animationOptions = UIViewAnimationOptionTransitionCurlUp | UIViewAnimationOptionAllowUserInteraction;
@@ -144,12 +168,17 @@ CATransition * SDTransitionFromAnimationOptions(SDWebImageAnimationOptions optio
 }
 
 + (SDWebImageTransition *)curlDownTransition {
+    return [self curlDownTransitionWithDuration:0.5];
+}
+
++ (SDWebImageTransition *)curlDownTransitionWithDuration:(NSTimeInterval)duration {
     SDWebImageTransition *transition = [SDWebImageTransition new];
 #if SD_UIKIT
     transition.animationOptions = UIViewAnimationOptionTransitionCurlDown | UIViewAnimationOptionAllowUserInteraction;
 #else
     transition.animationOptions = SDWebImageAnimationOptionTransitionCurlDown;
 #endif
+    transition.duration = duration;
     return transition;
 }