1 files changed, 59 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/photoeditor/actions/AbstractSeekBar.java b/src/com/android/gallery3d/photoeditor/actions/AbstractSeekBar.java
new file mode 100644
index 000000000..27a0bce0b
--- /dev/null
+++ b/src/com/android/gallery3d/photoeditor/actions/AbstractSeekBar.java
@@ -0,0 +1,59 @@
+/*
+ * 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.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
+import android.util.AttributeSet;
+import android.widget.SeekBar;
+
+import com.android.gallery3d.R;
+
+/**
+ * Seek-bar base that implements a draggable thumb that fits seek-bar height.
+ */
+abstract class AbstractSeekBar extends SeekBar {
+
+    public AbstractSeekBar(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
+        super.onSizeChanged(w, h, oldw, oldh);
+
+        // Scale the thumb to fit seek-bar height.
+        Resources res = getResources();
+        Drawable thumb = res.getDrawable(R.drawable.photoeditor_seekbar_thumb);
+
+        // Set the left/right padding to half width of the thumb drawn.
+        int scaledWidth = thumb.getIntrinsicWidth() * h / thumb.getIntrinsicHeight();
+        int padding = (scaledWidth + 1) / 2;
+        setPadding(padding, 0, padding, 0);
+
+        Bitmap bitmap = Bitmap.createBitmap(scaledWidth, h, Bitmap.Config.ARGB_8888);
+        Canvas canvas = new Canvas(bitmap);
+        thumb.setBounds(0, 0, bitmap.getWidth(), bitmap.getHeight());
+        thumb.draw(canvas);
+
+        setThumb(new BitmapDrawable(res, bitmap));
+    }
+}