1 files changed, 55 insertions, 0 deletions
diff --git a/src/com/android/camera/ui/TwoStateImageView.java b/src/com/android/camera/ui/TwoStateImageView.java
new file mode 100644
index 000000000..cd5b27fc1
--- /dev/null
+++ b/src/com/android/camera/ui/TwoStateImageView.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2011 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.camera.ui;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.widget.ImageView;
+
+/**
+ * A @{code ImageView} which change the opacity of the icon if disabled.
+ */
+public class TwoStateImageView extends ImageView {
+    private static final int ENABLED_ALPHA = 255;
+    private static final int DISABLED_ALPHA = (int) (255 * 0.4);
+    private boolean mFilterEnabled = true;
+
+    public TwoStateImageView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public TwoStateImageView(Context context) {
+        this(context, null);
+    }
+
+    @SuppressWarnings("deprecation")
+    @Override
+    public void setEnabled(boolean enabled) {
+        super.setEnabled(enabled);
+        if (mFilterEnabled) {
+            if (enabled) {
+                setAlpha(ENABLED_ALPHA);
+            } else {
+                setAlpha(DISABLED_ALPHA);
+            }
+        }
+    }
+
+    public void enableFilter(boolean enabled) {
+        mFilterEnabled = enabled;
+    }
+}