1 files changed, 141 insertions, 0 deletions
diff --git a/src/com/android/camera/ui/focus/FocusController.java b/src/com/android/camera/ui/focus/FocusController.java
new file mode 100644
index 000000000..f303f1ea1
--- /dev/null
+++ b/src/com/android/camera/ui/focus/FocusController.java
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+/*
+ * Copyright (C) 2014 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.focus;
+
+import android.graphics.RectF;
+import android.util.Log;
+
+import com.android.camera.async.MainThread;
+import com.android.camera.ui.motion.LinearScale;
+
+/**
+ * The focus controller interacts with the focus ring UI element.
+ */
+public class FocusController {
+    private static final String TAG = "FocusController";
+
+    private final FocusRing mFocusRing;
+    private final FocusSound mFocusSound;
+    private final MainThread mMainThread;
+
+    public FocusController(FocusRing focusRing, FocusSound focusSound, MainThread mainThread) {
+        mFocusRing = focusRing;
+        mFocusSound = focusSound;
+        mMainThread = mainThread;
+    }
+
+    /**
+     * Show a passive focus animation at the center of the active area.
+     * This will likely be different than the view bounds due to varying image
+     * ratios and dimensions.
+     */
+    public void showPassiveFocusAtCenter() {
+        mMainThread.execute(new Runnable() {
+            @Override
+            public void run() {
+                Log.v(TAG, "Running showPassiveFocusAtCenter()");
+                mFocusRing.startPassiveFocus();
+                mFocusRing.centerFocusLocation();
+            }
+        });
+    }
+
+    /**
+     * Show a passive focus animation at the given viewX and viewY position.
+     * This is usually indicates the camera subsystem kicked off an auto-focus
+     * at the given screen position.
+     *
+     * @param viewX the view's x coordinate
+     * @param viewY the view's y coordinate
+     */
+    public void showPassiveFocusAt(final int viewX, final int viewY) {
+        mMainThread.execute(new Runnable() {
+            @Override
+            public void run() {
+                Log.v(TAG, "Running showPassiveFocusAt(" + viewX + ", " + viewY + ")");
+                mFocusRing.startPassiveFocus();
+                mFocusRing.setFocusLocation(viewX, viewY);
+            }
+        });
+    }
+
+    /**
+     * Show an active focus animation at the given viewX and viewY position.
+     * This is normally initiated by the user touching the screen at a given
+     * point.
+     *
+     * @param viewX the view's x coordinate
+     * @param viewY the view's y coordinate
+     */
+    public void showActiveFocusAt(final int viewX, final int viewY) {
+        mMainThread.execute(new Runnable() {
+            @Override
+            public void run() {
+                Log.v(TAG, "showActiveFocusAt(" + viewX + ", " + viewY + ")");
+                mFocusRing.startActiveFocus();
+                mFocusRing.setFocusLocation(viewX, viewY);
+
+                // TODO: Enable focus sound when better audio controls exist.
+                // mFocusSound.play();
+            }
+        });
+    }
+
+    /**
+     * Stop any currently executing focus animation.
+     */
+    public void clearFocusIndicator() {
+        mMainThread.execute(new Runnable() {
+            @Override
+            public void run() {
+                Log.v(TAG, "clearFocusIndicator()");
+                mFocusRing.stopFocusAnimations();
+            }
+        });
+    }
+
+    /**
+     * Computing the correct location for the focus ring requires knowing
+     * the screen position and size of the preview area so the drawing
+     * operations can be clipped correctly.
+     */
+    public void configurePreviewDimensions(final RectF previewArea) {
+        mMainThread.execute(new Runnable() {
+            @Override
+            public void run() {
+               Log.v(TAG, "configurePreviewDimensions(" + previewArea + ")");
+               mFocusRing.configurePreviewDimensions(previewArea);
+            }
+        });
+    }
+
+    /**
+     * Set the radius of the focus ring as a radius between 0 and 1.
+     * This will map to the min and max values computed for the UI.
+     */
+    public void setFocusRatio(final float ratio) {
+        mMainThread.execute(new Runnable() {
+            @Override
+            public void run() {
+                if (mFocusRing.isPassiveFocusRunning() ||
+                      mFocusRing.isActiveFocusRunning()) {
+                    mFocusRing.setRadiusRatio(ratio);
+                }
+            }
+        });
+    }
+}