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Diffstat (limited to 'wallet/src/main/java/net/taler/wallet/Utils.kt')
-rw-r--r--wallet/src/main/java/net/taler/wallet/Utils.kt40
1 files changed, 40 insertions, 0 deletions
diff --git a/wallet/src/main/java/net/taler/wallet/Utils.kt b/wallet/src/main/java/net/taler/wallet/Utils.kt
new file mode 100644
index 00000000..fb0b3ae1
--- /dev/null
+++ b/wallet/src/main/java/net/taler/wallet/Utils.kt
@@ -0,0 +1,40 @@
+/*
+ * This file is part of GNU Taler
+ * (C) 2020 Taler Systems S.A.
+ *
+ * GNU Taler is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 3, or (at your option) any later version.
+ *
+ * GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
+ */
+
+package net.taler.wallet
+
+import android.view.View
+import android.view.View.INVISIBLE
+import android.view.View.VISIBLE
+
+fun View.fadeIn(endAction: () -> Unit = {}) {
+ if (visibility == VISIBLE) return
+ alpha = 0f
+ visibility = VISIBLE
+ animate().alpha(1f).withEndAction {
+ if (context != null) endAction.invoke()
+ }.start()
+}
+
+fun View.fadeOut(endAction: () -> Unit = {}) {
+ if (visibility == INVISIBLE) return
+ animate().alpha(0f).withEndAction {
+ if (context == null) return@withEndAction
+ visibility = INVISIBLE
+ alpha = 1f
+ endAction.invoke()
+ }.start()
+}