1 files changed, 95 insertions, 0 deletions
diff --git a/src/com/android/camera/ui/OverlayRenderer.java b/src/com/android/camera/ui/OverlayRenderer.java
new file mode 100644
index 000000000..417e219aa
--- /dev/null
+++ b/src/com/android/camera/ui/OverlayRenderer.java
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2012 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.graphics.Canvas;
+import android.view.MotionEvent;
+
+public abstract class OverlayRenderer implements RenderOverlay.Renderer {
+
+    private static final String TAG = "CAM OverlayRenderer";
+    protected RenderOverlay mOverlay;
+
+    protected int mLeft, mTop, mRight, mBottom;
+
+    protected boolean mVisible;
+
+    public void setVisible(boolean vis) {
+        mVisible = vis;
+        update();
+    }
+
+    public boolean isVisible() {
+        return mVisible;
+    }
+
+    // default does not handle touch
+    @Override
+    public boolean handlesTouch() {
+        return false;
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent evt) {
+        return false;
+    }
+
+    public abstract void onDraw(Canvas canvas);
+
+    public void draw(Canvas canvas) {
+        if (mVisible) {
+            onDraw(canvas);
+        }
+    }
+
+    @Override
+    public void setOverlay(RenderOverlay overlay) {
+        mOverlay = overlay;
+    }
+
+    @Override
+    public void layout(int left, int top, int right, int bottom) {
+        mLeft = left;
+        mRight = right;
+        mTop = top;
+        mBottom = bottom;
+    }
+
+    protected Context getContext() {
+        if (mOverlay != null) {
+            return mOverlay.getContext();
+        } else {
+            return null;
+        }
+    }
+
+    public int getWidth() {
+        return mRight - mLeft;
+    }
+
+    public int getHeight() {
+        return mBottom - mTop;
+    }
+
+    protected void update() {
+        if (mOverlay != null) {
+            mOverlay.update();
+        }
+    }
+
+}