modified CardContainerView#updateAlpha.

katsuya-yamada-eureka · katsuya-yamada-eureka · commit 5006302ca747 · 2018-03-12T17:43:01.000+09:00
diff --git a/cardstackview/src/main/java/com/yuyakaido/android/cardstackview/internal/CardContainerView.java b/cardstackview/src/main/java/com/yuyakaido/android/cardstackview/internal/CardContainerView.java
@@ -215,23 +215,44 @@ private void updateAlpha() {
         float percentX = getPercentX();
         float percentY = getPercentY();
 
-        if (Math.abs(percentX) > Math.abs(percentY)){
-            if (percentX < 0) {
-                showLeftOverlay();
+        if (option.swipeDirection == SwipeDirection.HORIZONTAL) {
+            showHorizontalOverlay(percentX);
+        } else if (option.swipeDirection == SwipeDirection.VERTICAL) {
+            showVerticalOverlay(percentY);
+        } else if (option.swipeDirection == SwipeDirection.FREEDOM_NO_BOTTOM) {
+            if (Math.abs(percentX) < Math.abs(percentY) && percentY < 0) {
+                showTopOverlay();
+                setOverlayAlpha(Math.abs(percentY));
             } else {
-                showRightOverlay();
+                showHorizontalOverlay(percentX);
             }
-            setOverlayAlpha(Math.abs(percentX));
-        }else{
-            if (percentY < 0) {
-                showTopOverlay();
+        } else if (option.swipeDirection == SwipeDirection.FREEDOM) {
+            if (Math.abs(percentX) > Math.abs(percentY)) {
+                showHorizontalOverlay(percentX);
             } else {
-                showBottomOverlay();
+                showVerticalOverlay(percentY);
             }
-            setOverlayAlpha(Math.abs(percentY));
         }
     }
 
+    private void showHorizontalOverlay(float percentX) {
+        if (percentX < 0) {
+            showLeftOverlay();
+        } else {
+            showRightOverlay();
+        }
+        setOverlayAlpha(Math.abs(percentX));
+    }
+
+    private void showVerticalOverlay(float percentY) {
+        if (percentY < 0) {
+            showTopOverlay();
+        } else {
+            showBottomOverlay();
+        }
+        setOverlayAlpha(Math.abs(percentY));
+    }
+
     private void moveToOrigin() {
         animate().translationX(viewOriginX)
                 .translationY(viewOriginY)
