1 files changed, 174 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/theme/perapptheming/PerAppThemeListLayout.java b/src/org/cyanogenmod/theme/perapptheming/PerAppThemeListLayout.java
new file mode 100644
index 0000000..424d640
--- /dev/null
+++ b/src/org/cyanogenmod/theme/perapptheming/PerAppThemeListLayout.java
@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2016 Cyanogen, Inc.
+ * Copyright (C) 2016 The CyanogenMod 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 org.cyanogenmod.theme.perapptheming;
+
+import android.animation.Animator;
+import android.animation.ValueAnimator;
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.Canvas;
+import android.graphics.Path;
+import android.graphics.PointF;
+import android.util.AttributeSet;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.animation.AccelerateDecelerateInterpolator;
+import android.view.animation.Animation;
+import android.widget.FrameLayout;
+
+import org.cyanogenmod.theme.chooser.R;
+
+public class PerAppThemeListLayout extends FrameLayout {
+    private PerAppThemingWindow mWindow;
+    private PointF mCenter;
+
+    private float mMaxRadius;
+    private float mTargetRadius;
+    private float mStartRadius;
+    private float mCurrentRadius;
+
+    private ValueAnimator mAnimator;
+    private boolean mIsAnimating;
+
+    private Path mRevealPath;
+
+    public PerAppThemeListLayout(Context context) {
+        this(context, null);
+    }
+
+    public PerAppThemeListLayout(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public PerAppThemeListLayout(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        final Resources res = getResources();
+        float width = res.getDimension(R.dimen.theme_list_width);
+        float height = res.getDimension(R.dimen.theme_list_max_height);
+        mMaxRadius = (float) Math.sqrt(Math.pow(width, 2) + Math.pow(height, 2));
+        mRevealPath = new Path();
+
+        mAnimator = new ValueAnimator();
+        mAnimator.setInterpolator(new AccelerateDecelerateInterpolator());
+        mAnimator.addListener(mAnimationListener);
+        mAnimator.addUpdateListener(mUpdateListener);
+    }
+
+    @Override
+    public boolean dispatchKeyEvent(KeyEvent event) {
+        if (event.getAction() == KeyEvent.ACTION_DOWN &&
+                event.getKeyCode() == KeyEvent.KEYCODE_BACK && mWindow != null) {
+            mWindow.hideThemeList();
+        }
+        return super.dispatchKeyEvent(event);
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        if (isEnabled() && event.getAction() == MotionEvent.ACTION_DOWN && mWindow != null) {
+            mWindow.hideThemeList();
+            return true;
+        }
+        return super.onTouchEvent(event);
+    }
+
+    @Override
+    protected void dispatchDraw(Canvas canvas) {
+        if (!mIsAnimating) {
+            super.dispatchDraw(canvas);
+        } else {
+            final int state = canvas.save();
+            mRevealPath.reset();
+            mRevealPath.addCircle(mCenter.x, mCenter.y, mCurrentRadius, Path.Direction.CW);
+            canvas.clipPath(mRevealPath);
+            super.dispatchDraw(canvas);
+            canvas.restoreToCount(state);
+        }
+    }
+
+    public void setPerAppThemingWindow(PerAppThemingWindow window) {
+        mWindow = window;
+    }
+
+    /**
+     * Perform a circular reveal from center cx,cy
+     * @param cx X position of center
+     * @param cy Y position of center
+     * @param duration Duration of animation
+     */
+    public void circularReveal(float cx, float cy, long duration) {
+        mCenter = new PointF(cx, cy);
+        mIsAnimating = true;
+
+        mStartRadius = mCurrentRadius;
+        mTargetRadius = mMaxRadius;
+        startAnimation(duration);
+    }
+
+    /**
+     * Perform a circular hide from center cx,cy
+     * @param cx X position of center
+     * @param cy Y position of center
+     * @param duration Duration of animation
+     */
+    public void circularHide(float cx, float cy, long duration) {
+        mCenter = new PointF(cx, cy);
+        mIsAnimating = true;
+
+        mStartRadius = mCurrentRadius;
+        mTargetRadius = 0f;
+        startAnimation(duration);
+    }
+
+    private void startAnimation(long duration) {
+        getChildAt(0).setVisibility(View.VISIBLE);
+        mAnimator.setFloatValues(mStartRadius, mTargetRadius);
+        mAnimator.setDuration(duration);
+        mAnimator.start();
+    }
+
+    private ValueAnimator.AnimatorUpdateListener mUpdateListener =
+            new ValueAnimator.AnimatorUpdateListener() {
+        @Override
+        public void onAnimationUpdate(ValueAnimator animation) {
+            Float value = (Float) animation.getAnimatedValue();
+            mCurrentRadius = value.floatValue();
+            invalidate();
+        }
+    };
+
+    private Animator.AnimatorListener mAnimationListener = new Animator.AnimatorListener() {
+        @Override
+        public void onAnimationStart(Animator animation) {}
+
+        @Override
+        public void onAnimationEnd(Animator animation) {
+            mIsAnimating = false;
+            if (mCurrentRadius <= 0) {
+                getChildAt(0).setVisibility(INVISIBLE);
+            }
+        }
+
+        @Override
+        public void onAnimationCancel(Animator animation) {}
+
+        @Override
+        public void onAnimationRepeat(Animator animation) {}
+    };
+}