Move keyguard source and resources into new package

This is part 1 of two commits.  This commit moves all keyguard
source and resources to a new com.android.keyguard package.
The second part of this change applies an overlay that makes
it work.

Change-Id: I360e9ac7783c6cb289c992733818b9535df185b9

1 files changed, 290 insertions, 0 deletions

diff --git a/packages/Keyguard/src/com/android/keyguard/KeyguardWidgetCarousel.java b/packages/Keyguard/src/com/android/keyguard/KeyguardWidgetCarousel.java
new file mode 100644
index 0000000..257fd27
--- /dev/null
+++ b/packages/Keyguard/src/com/android/keyguard/KeyguardWidgetCarousel.java
@@ -0,0 +1,290 @@
+/*
+ * 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.internal.policy.impl.keyguard;
+
+import android.animation.Animator;
+import android.animation.AnimatorSet;
+import android.animation.ObjectAnimator;
+import android.animation.PropertyValuesHolder;
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.animation.AccelerateInterpolator;
+import android.view.animation.DecelerateInterpolator;
+import android.view.animation.Interpolator;
+
+import com.android.internal.R;
+
+import java.util.ArrayList;
+
+public class KeyguardWidgetCarousel extends KeyguardWidgetPager {
+
+    private float mAdjacentPagesAngle;
+    private static float MAX_SCROLL_PROGRESS = 1.3f;
+    private static float CAMERA_DISTANCE = 10000;
+    protected AnimatorSet mChildrenTransformsAnimator;
+    float[] mTmpTransform = new float[3];
+
+    public KeyguardWidgetCarousel(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public KeyguardWidgetCarousel(Context context) {
+        this(context, null, 0);
+    }
+
+    public KeyguardWidgetCarousel(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        mAdjacentPagesAngle = context.getResources().getInteger(R.integer.kg_carousel_angle);
+    }
+
+    protected float getMaxScrollProgress() {
+        return MAX_SCROLL_PROGRESS;
+    }
+
+    public float getAlphaForPage(int screenCenter, int index, boolean showSidePages) {
+        View child = getChildAt(index);
+        if (child == null) return 0f;
+
+        boolean inVisibleRange = index >= getNextPage() - 1 && index <= getNextPage() + 1;
+        float scrollProgress = getScrollProgress(screenCenter, child, index);
+
+        if (isOverScrollChild(index, scrollProgress)) {
+            return 1.0f;
+        } else if ((showSidePages && inVisibleRange) || index == getNextPage()) {
+            scrollProgress = getBoundedScrollProgress(screenCenter, child, index);
+            float alpha = 1.0f - 1.0f * Math.abs(scrollProgress / MAX_SCROLL_PROGRESS);
+            return alpha;
+        } else {
+            return 0f;
+        }
+    }
+
+    public float getOutlineAlphaForPage(int screenCenter, int index, boolean showSidePages) {
+        boolean inVisibleRange = index >= getNextPage() - 1 && index <= getNextPage() + 1;
+        if (inVisibleRange) {
+            return super.getOutlineAlphaForPage(screenCenter, index, showSidePages);
+        } else {
+            return 0f;
+        }
+    }
+
+    private void updatePageAlphaValues(int screenCenter) {
+        if (mChildrenOutlineFadeAnimation != null) {
+            mChildrenOutlineFadeAnimation.cancel();
+            mChildrenOutlineFadeAnimation = null;
+        }
+        boolean showSidePages = mShowingInitialHints || isPageMoving();
+        if (!isReordering(false)) {
+            for (int i = 0; i < getChildCount(); i++) {
+                KeyguardWidgetFrame child = getWidgetPageAt(i);
+                if (child != null) {
+                    float outlineAlpha = getOutlineAlphaForPage(screenCenter, i, showSidePages);
+                    float contentAlpha = getAlphaForPage(screenCenter, i,showSidePages);
+                    child.setBackgroundAlpha(outlineAlpha);
+                    child.setContentAlpha(contentAlpha);
+                }
+            }
+        }
+    }
+
+    public void showInitialPageHints() {
+        mShowingInitialHints = true;
+        int count = getChildCount();
+        for (int i = 0; i < count; i++) {
+            boolean inVisibleRange = i >= getNextPage() - 1 && i <= getNextPage() + 1;
+            KeyguardWidgetFrame child = getWidgetPageAt(i);
+            if (inVisibleRange) {
+                child.setBackgroundAlpha(KeyguardWidgetFrame.OUTLINE_ALPHA_MULTIPLIER);
+                child.setContentAlpha(1f);
+            } else {
+                child.setBackgroundAlpha(0f);
+                child.setContentAlpha(0f);
+            }
+        }
+    }
+
+    @Override
+    protected void screenScrolled(int screenCenter) {
+        mScreenCenter = screenCenter;
+        updatePageAlphaValues(screenCenter);
+        if (isReordering(false)) return;
+        for (int i = 0; i < getChildCount(); i++) {
+            KeyguardWidgetFrame v = getWidgetPageAt(i);
+            float scrollProgress = getScrollProgress(screenCenter, v, i);
+            float boundedProgress = getBoundedScrollProgress(screenCenter, v, i);
+            if (v == mDragView || v == null) continue;
+            v.setCameraDistance(CAMERA_DISTANCE);
+
+            if (isOverScrollChild(i, scrollProgress)) {
+                v.setRotationY(- OVERSCROLL_MAX_ROTATION * scrollProgress);
+                v.setOverScrollAmount(Math.abs(scrollProgress), scrollProgress < 0);
+            } else {
+                int width = v.getMeasuredWidth();
+                float pivotX = (width / 2f) + boundedProgress * (width / 2f);
+                float pivotY = v.getMeasuredHeight() / 2;
+                float rotationY = - mAdjacentPagesAngle * boundedProgress;
+                v.setPivotX(pivotX);
+                v.setPivotY(pivotY);
+                v.setRotationY(rotationY);
+                v.setOverScrollAmount(0f, false);
+            }
+            float alpha = v.getAlpha();
+            // If the view has 0 alpha, we set it to be invisible so as to prevent
+            // it from accepting touches
+            if (alpha == 0) {
+                v.setVisibility(INVISIBLE);
+            } else if (v.getVisibility() != VISIBLE) {
+                v.setVisibility(VISIBLE);
+            }
+        }
+    }
+
+    void animatePagesToNeutral() {
+        if (mChildrenTransformsAnimator != null) {
+            mChildrenTransformsAnimator.cancel();
+            mChildrenTransformsAnimator = null;
+        }
+
+        int count = getChildCount();
+        PropertyValuesHolder alpha;
+        PropertyValuesHolder outlineAlpha;
+        PropertyValuesHolder rotationY;
+        ArrayList<Animator> anims = new ArrayList<Animator>();
+
+        for (int i = 0; i < count; i++) {
+            KeyguardWidgetFrame child = getWidgetPageAt(i);
+            boolean inVisibleRange = (i >= mCurrentPage - 1 && i <= mCurrentPage + 1);
+            if (!inVisibleRange) {
+                child.setRotationY(0f);
+            }
+            alpha = PropertyValuesHolder.ofFloat("contentAlpha", 1.0f);
+            outlineAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha",
+                    KeyguardWidgetFrame.OUTLINE_ALPHA_MULTIPLIER);
+            rotationY = PropertyValuesHolder.ofFloat("rotationY", 0f);
+            ObjectAnimator a = ObjectAnimator.ofPropertyValuesHolder(child, alpha, outlineAlpha, rotationY);
+            child.setVisibility(VISIBLE);
+            if (!inVisibleRange) {
+                a.setInterpolator(mSlowFadeInterpolator);
+            }
+            anims.add(a);
+        }
+
+        int duration = REORDERING_ZOOM_IN_OUT_DURATION;
+        mChildrenTransformsAnimator = new AnimatorSet();
+        mChildrenTransformsAnimator.playTogether(anims);
+
+        mChildrenTransformsAnimator.setDuration(duration);
+        mChildrenTransformsAnimator.start();
+    }
+
+    private void getTransformForPage(int screenCenter, int index, float[] transform) {
+        View child = getChildAt(index);
+        float boundedProgress = getBoundedScrollProgress(screenCenter, child, index);
+        float rotationY = - mAdjacentPagesAngle * boundedProgress;
+        int width = child.getMeasuredWidth();
+        float pivotX = (width / 2f) + boundedProgress * (width / 2f);
+        float pivotY = child.getMeasuredHeight() / 2;
+
+        transform[0] = pivotX;
+        transform[1] = pivotY;
+        transform[2] = rotationY;
+    }
+
+    Interpolator mFastFadeInterpolator = new Interpolator() {
+        Interpolator mInternal = new DecelerateInterpolator(1.5f);
+        float mFactor = 2.5f;
+        @Override
+        public float getInterpolation(float input) {
+            return mInternal.getInterpolation(Math.min(mFactor * input, 1f));
+        }
+    };
+
+    Interpolator mSlowFadeInterpolator = new Interpolator() {
+        Interpolator mInternal = new AccelerateInterpolator(1.5f);
+        float mFactor = 1.3f;
+        @Override
+        public float getInterpolation(float input) {
+            input -= (1 - 1 / mFactor);
+            input = mFactor * Math.max(input, 0f);
+            return mInternal.getInterpolation(input);
+        }
+    };
+
+    void animatePagesToCarousel() {
+        if (mChildrenTransformsAnimator != null) {
+            mChildrenTransformsAnimator.cancel();
+            mChildrenTransformsAnimator = null;
+        }
+
+        int count = getChildCount();
+        PropertyValuesHolder alpha;
+        PropertyValuesHolder outlineAlpha;
+        PropertyValuesHolder rotationY;
+        PropertyValuesHolder pivotX;
+        PropertyValuesHolder pivotY;
+        ArrayList<Animator> anims = new ArrayList<Animator>();
+
+        for (int i = 0; i < count; i++) {
+            KeyguardWidgetFrame child = getWidgetPageAt(i);
+            float finalAlpha = getAlphaForPage(mScreenCenter, i, true);
+            float finalOutlineAlpha = getOutlineAlphaForPage(mScreenCenter, i, true);
+            getTransformForPage(mScreenCenter, i, mTmpTransform);
+
+            boolean inVisibleRange = (i >= mCurrentPage - 1 && i <= mCurrentPage + 1);
+
+            ObjectAnimator a;
+            alpha = PropertyValuesHolder.ofFloat("contentAlpha", finalAlpha);
+            outlineAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", finalOutlineAlpha);
+            pivotX = PropertyValuesHolder.ofFloat("pivotX", mTmpTransform[0]);
+            pivotY = PropertyValuesHolder.ofFloat("pivotY", mTmpTransform[1]);
+            rotationY = PropertyValuesHolder.ofFloat("rotationY", mTmpTransform[2]);
+
+            if (inVisibleRange) {
+                // for the central pages we animate into a rotated state
+                a = ObjectAnimator.ofPropertyValuesHolder(child, alpha, outlineAlpha,
+                        pivotX, pivotY, rotationY);
+            } else {
+                a = ObjectAnimator.ofPropertyValuesHolder(child, alpha, outlineAlpha);
+                a.setInterpolator(mFastFadeInterpolator);
+            }
+            anims.add(a);
+        }
+
+        int duration = REORDERING_ZOOM_IN_OUT_DURATION;
+        mChildrenTransformsAnimator = new AnimatorSet();
+        mChildrenTransformsAnimator.playTogether(anims);
+
+        mChildrenTransformsAnimator.setDuration(duration);
+        mChildrenTransformsAnimator.start();
+    }
+
+    protected void reorderStarting() {
+        mViewStateManager.fadeOutSecurity(REORDERING_ZOOM_IN_OUT_DURATION);
+        animatePagesToNeutral();
+    }
+
+    protected boolean zoomIn(final Runnable onCompleteRunnable) {
+        animatePagesToCarousel();
+        return super.zoomIn(onCompleteRunnable);
+    }
+
+    @Override
+    protected void onEndReordering() {
+        super.onEndReordering();
+        mViewStateManager.fadeInSecurity(REORDERING_ZOOM_IN_OUT_DURATION);
+    }
+}