1 files changed, 63 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/photoeditor/actions/ScaleSeekBar.java b/src/com/android/gallery3d/photoeditor/actions/ScaleSeekBar.java
new file mode 100644
index 000000000..6fb154c17
--- /dev/null
+++ b/src/com/android/gallery3d/photoeditor/actions/ScaleSeekBar.java
@@ -0,0 +1,63 @@
+/*
+ * 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.actions;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.widget.SeekBar;
+
+/**
+ * Seek-bar that has a draggable thumb to set and get the normalized scale value from 0 to 1.
+ */
+class ScaleSeekBar extends AbstractSeekBar {
+
+    /**
+     * Listens to scale changes.
+     */
+    public interface OnScaleChangeListener {
+
+        void onProgressChanged(float progress, boolean fromUser);
+    }
+
+    public ScaleSeekBar(Context context, AttributeSet attrs) {
+        super(context, attrs);
+
+        setMax(100);
+    }
+
+    public void setOnScaleChangeListener(final OnScaleChangeListener listener) {
+        setOnSeekBarChangeListener((listener == null) ? null : new OnSeekBarChangeListener() {
+
+            @Override
+            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+                listener.onProgressChanged((float) progress / getMax(), fromUser);
+            }
+
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+            }
+        });
+    }
+
+    public void setProgress(float progress) {
+        setProgress((int) (progress * getMax()));
+    }
+}