Fix b/5974663: inconsistent transparency of disabled action buttons.

1. Avoid gray out save-button again as disabled alpha is already applied
to all text buttons.
2. Reduce disabled alpha of image buttons to make them look consistent
with text buttons.

Change-Id: Ie76988db1424ce036470a754acd2e4501979dd1a

1 files changed, 41 insertions, 0 deletions

diff --git a/src/com/android/gallery3d/photoeditor/ImageActionButton.java b/src/com/android/gallery3d/photoeditor/ImageActionButton.java
new file mode 100644
index 000000000..a919ac6d4
--- /dev/null
+++ b/src/com/android/gallery3d/photoeditor/ImageActionButton.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.photoeditor;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.widget.ImageButton;
+
+/**
+ * Image buttons used in Action-bar and Effects-menu that can be grayed out when set disabled.
+ * (Text buttons are automatically grayed out when disabled; however, image buttons are not.)
+ */
+public class ImageActionButton extends ImageButton {
+
+    private static final float ENABLED_ALPHA = 1;
+    private static final float DISABLED_ALPHA = 0.28f;
+
+    public ImageActionButton(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    public void setEnabled(boolean enabled) {
+        super.setEnabled(enabled);
+        setAlpha(enabled ? ENABLED_ALPHA : DISABLED_ALPHA);
+    }
+}