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-rw-r--r--res/layout/lists_fragment.xml37
-rw-r--r--src/com/android/dialer/list/ListsFragment.java12
-rw-r--r--src/com/android/dialer/widget/OverlappingPaneLayout.java1256
3 files changed, 1287 insertions, 18 deletions
diff --git a/res/layout/lists_fragment.xml b/res/layout/lists_fragment.xml
index 6ed0f856e..d5b2bf8ac 100644
--- a/res/layout/lists_fragment.xml
+++ b/res/layout/lists_fragment.xml
@@ -14,11 +14,11 @@
limitations under the License.
-->
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<com.android.dialer.widget.OverlappingPaneLayout
+ xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingTop="?android:attr/actionBarSize"
- android:orientation="vertical"
android:animateLayoutChanges="true"
android:id="@+id/lists_frame">
<ListView
@@ -29,18 +29,23 @@
android:clipToPadding="false"
android:fadingEdge="none"
android:divider="@null" />
- <com.android.dialer.list.ViewPagerTabs
- android:id="@+id/lists_pager_header"
+ <LinearLayout
android:layout_width="match_parent"
- android:layout_height="?android:attr/actionBarSize"
- android:textAllCaps="true"
- android:orientation="horizontal"
- android:layout_gravity="top"
- style="@style/DialtactsActionBarTabTextStyle" />
- <android.support.v4.view.ViewPager
- android:id="@+id/lists_pager"
- android:layout_width="match_parent"
- android:layout_height="0dp"
- android:layout_weight="1">
- </android.support.v4.view.ViewPager>
-</LinearLayout>
+ android:layout_height="match_parent"
+ android:orientation="vertical">
+ <com.android.dialer.list.ViewPagerTabs
+ android:id="@+id/lists_pager_header"
+ android:layout_width="match_parent"
+ android:layout_height="?android:attr/actionBarSize"
+ android:textAllCaps="true"
+ android:orientation="horizontal"
+ android:layout_gravity="top"
+ style="@style/DialtactsActionBarTabTextStyle" />
+ <android.support.v4.view.ViewPager
+ android:id="@+id/lists_pager"
+ android:layout_width="match_parent"
+ android:layout_height="0dp"
+ android:layout_weight="1">
+ </android.support.v4.view.ViewPager>
+ </LinearLayout>
+</com.android.dialer.widget.OverlappingPaneLayout>
diff --git a/src/com/android/dialer/list/ListsFragment.java b/src/com/android/dialer/list/ListsFragment.java
index a61d8a55f..7cabe6fd5 100644
--- a/src/com/android/dialer/list/ListsFragment.java
+++ b/src/com/android/dialer/list/ListsFragment.java
@@ -18,7 +18,6 @@ import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
-import android.widget.LinearLayout;
import android.widget.ListView;
import com.android.contacts.common.GeoUtil;
@@ -32,6 +31,8 @@ import com.android.dialer.calllog.CallLogFragment;
import com.android.dialer.calllog.CallLogQuery;
import com.android.dialer.calllog.CallLogQueryHandler;
import com.android.dialer.calllog.ContactInfoHelper;
+import com.android.dialer.widget.OverlappingPaneLayout;
+import com.android.dialer.widget.OverlappingPaneLayout.PanelSlideListener;
import com.android.dialerbind.ObjectFactory;
import java.util.ArrayList;
@@ -226,7 +227,14 @@ public class ListsFragment extends Fragment implements CallLogQueryHandler.Liste
(ListView) parentView.findViewById(R.id.shortcut_card_list);
shortcutCardsListView.setAdapter(mMergedAdapter);
- LayoutTransition transition = ((LinearLayout) parentView).getLayoutTransition();
+ final OverlappingPaneLayout paneLayout = (OverlappingPaneLayout) parentView;
+ paneLayout.setSliderFadeColor(android.R.color.transparent);
+ // TODO: Remove the notion of a capturable view. The entire view be slideable, once
+ // the framework better supports nested scrolling.
+ paneLayout.setCapturableView(mViewPagerTabs);
+ paneLayout.openPane();
+
+ LayoutTransition transition = paneLayout.getLayoutTransition();
// Turns on animations for all types of layout changes so that they occur for
// height changes.
transition.enableTransitionType(LayoutTransition.CHANGING);
diff --git a/src/com/android/dialer/widget/OverlappingPaneLayout.java b/src/com/android/dialer/widget/OverlappingPaneLayout.java
new file mode 100644
index 000000000..aa9de6377
--- /dev/null
+++ b/src/com/android/dialer/widget/OverlappingPaneLayout.java
@@ -0,0 +1,1256 @@
+/*
+ * 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.dialer.widget;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.PixelFormat;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffColorFilter;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
+import android.os.Build;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.support.v4.view.AccessibilityDelegateCompat;
+import android.support.v4.view.MotionEventCompat;
+import android.support.v4.view.ViewCompat;
+import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat;
+import android.support.v4.widget.ViewDragHelper;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.ViewParent;
+import android.view.accessibility.AccessibilityEvent;
+
+import java.util.ArrayList;
+
+/**
+ * A custom layout that aligns its child views vertically as two panes, and allows for the bottom
+ * pane to be dragged upwards to overlap and hide the top pane. This layout is adapted from
+ * {@link android.support.v4.widget.SlidingPaneLayout}.
+ */
+public class OverlappingPaneLayout extends ViewGroup {
+ private static final String TAG = "SlidingPaneLayout";
+
+ /**
+ * Default size of the overhang for a pane in the open state.
+ * At least this much of a sliding pane will remain visible.
+ * This indicates that there is more content available and provides
+ * a "physical" edge to grab to pull it closed.
+ */
+ private static final int DEFAULT_OVERHANG_SIZE = 32; // dp;
+
+ /**
+ * If no fade color is given by default it will fade to 80% gray.
+ */
+ private static final int DEFAULT_FADE_COLOR = 0xcccccccc;
+
+ /**
+ * The fade color used for the sliding panel. 0 = no fading.
+ */
+ private int mSliderFadeColor = DEFAULT_FADE_COLOR;
+
+ /**
+ * Minimum velocity that will be detected as a fling
+ */
+ private static final int MIN_FLING_VELOCITY = 400; // dips per second
+
+ /**
+ * The fade color used for the panel covered by the slider. 0 = no fading.
+ */
+ private int mCoveredFadeColor;
+
+ /**
+ * The size of the overhang in pixels.
+ * This is the minimum section of the sliding panel that will
+ * be visible in the open state to allow for a closing drag.
+ */
+ private final int mOverhangSize;
+
+ /**
+ * True if a panel can slide with the current measurements
+ */
+ private boolean mCanSlide;
+
+ /**
+ * The child view that can slide, if any.
+ */
+ private View mSlideableView;
+
+ /**
+ * The view that can be used to start the drag with.
+ */
+ private View mCapturableView;
+
+ /**
+ * How far the panel is offset from its closed position.
+ * range [0, 1] where 0 = closed, 1 = open.
+ */
+ private float mSlideOffset;
+
+ /**
+ * How far in pixels the slideable panel may move.
+ */
+ private int mSlideRange;
+
+ /**
+ * A panel view is locked into internal scrolling or another condition that
+ * is preventing a drag.
+ */
+ private boolean mIsUnableToDrag;
+
+ private float mInitialMotionX;
+ private float mInitialMotionY;
+
+ private PanelSlideListener mPanelSlideListener;
+
+ private final ViewDragHelper mDragHelper;
+
+ /**
+ * Stores whether or not the pane was open the last time it was slideable.
+ * If open/close operations are invoked this state is modified. Used by
+ * instance state save/restore.
+ */
+ private boolean mPreservedOpenState;
+ private boolean mFirstLayout = true;
+
+ private final Rect mTmpRect = new Rect();
+
+ private final ArrayList<DisableLayerRunnable> mPostedRunnables =
+ new ArrayList<DisableLayerRunnable>();
+
+ /**
+ * Listener for monitoring events about sliding panes.
+ */
+ public interface PanelSlideListener {
+ /**
+ * Called when a sliding pane's position changes.
+ * @param panel The child view that was moved
+ * @param slideOffset The new offset of this sliding pane within its range, from 0-1
+ */
+ public void onPanelSlide(View panel, float slideOffset);
+ /**
+ * Called when a sliding pane becomes slid completely open. The pane may or may not
+ * be interactive at this point depending on how much of the pane is visible.
+ * @param panel The child view that was slid to an open position, revealing other panes
+ */
+ public void onPanelOpened(View panel);
+
+ /**
+ * Called when a sliding pane becomes slid completely closed. The pane is now guaranteed
+ * to be interactive. It may now obscure other views in the layout.
+ * @param panel The child view that was slid to a closed position
+ */
+ public void onPanelClosed(View panel);
+ }
+
+ public OverlappingPaneLayout(Context context) {
+ this(context, null);
+ }
+
+ public OverlappingPaneLayout(Context context, AttributeSet attrs) {
+ this(context, attrs, 0);
+ }
+
+ public OverlappingPaneLayout(Context context, AttributeSet attrs, int defStyle) {
+ super(context, attrs, defStyle);
+
+ final float density = context.getResources().getDisplayMetrics().density;
+ mOverhangSize = (int) (DEFAULT_OVERHANG_SIZE * density + 0.5f);
+
+ setWillNotDraw(false);
+
+ ViewCompat.setAccessibilityDelegate(this, new AccessibilityDelegate());
+ ViewCompat.setImportantForAccessibility(this, ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_YES);
+
+ mDragHelper = ViewDragHelper.create(this, 0.5f, new DragHelperCallback());
+ mDragHelper.setMinVelocity(MIN_FLING_VELOCITY * density);
+ }
+
+ /**
+ * Set the view that can be used to start dragging the sliding pane.
+ */
+ public void setCapturableView(View capturableView) {
+ mCapturableView = capturableView;
+ }
+
+ /**
+ * Set the color used to fade the sliding pane out when it is slid most of the way offscreen.
+ *
+ * @param color An ARGB-packed color value
+ */
+ public void setSliderFadeColor(int color) {
+ mSliderFadeColor = color;
+ }
+
+ /**
+ * @return The ARGB-packed color value used to fade the sliding pane
+ */
+ public int getSliderFadeColor() {
+ return mSliderFadeColor;
+ }
+
+ /**
+ * Set the color used to fade the pane covered by the sliding pane out when the pane
+ * will become fully covered in the closed state.
+ *
+ * @param color An ARGB-packed color value
+ */
+ public void setCoveredFadeColor(int color) {
+ mCoveredFadeColor = color;
+ }
+
+ /**
+ * @return The ARGB-packed color value used to fade the fixed pane
+ */
+ public int getCoveredFadeColor() {
+ return mCoveredFadeColor;
+ }
+
+ public void setPanelSlideListener(PanelSlideListener listener) {
+ mPanelSlideListener = listener;
+ }
+
+ void dispatchOnPanelSlide(View panel) {
+ if (mPanelSlideListener != null) {
+ mPanelSlideListener.onPanelSlide(panel, mSlideOffset);
+ }
+ }
+
+ void dispatchOnPanelOpened(View panel) {
+ if (mPanelSlideListener != null) {
+ mPanelSlideListener.onPanelOpened(panel);
+ }
+ sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
+ }
+
+ void dispatchOnPanelClosed(View panel) {
+ if (mPanelSlideListener != null) {
+ mPanelSlideListener.onPanelClosed(panel);
+ }
+ sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
+ }
+
+ void updateObscuredViewsVisibility(View panel) {
+ final int startBound = getPaddingTop();
+ final int endBound = getHeight() - getPaddingBottom();
+
+ final int leftBound = getPaddingLeft();
+ final int rightBound = getWidth() - getPaddingRight();
+ final int left;
+ final int right;
+ final int top;
+ final int bottom;
+ if (panel != null && viewIsOpaque(panel)) {
+ left = panel.getLeft();
+ right = panel.getRight();
+ top = panel.getTop();
+ bottom = panel.getBottom();
+ } else {
+ left = right = top = bottom = 0;
+ }
+
+ for (int i = 0, childCount = getChildCount(); i < childCount; i++) {
+ final View child = getChildAt(i);
+
+ if (child == panel) {
+ // There are still more children above the panel but they won't be affected.
+ break;
+ }
+
+ final int clampedChildLeft = Math.max(leftBound, child.getLeft());
+ final int clampedChildRight = Math.min(rightBound, child.getRight());
+ final int clampedChildTop = Math.max(startBound, child.getTop());
+ final int clampedChildBottom = Math.min(endBound, child.getBottom());
+
+ final int vis;
+ if (clampedChildLeft >= left && clampedChildTop >= top &&
+ clampedChildRight <= right && clampedChildBottom <= bottom) {
+ vis = INVISIBLE;
+ } else {
+ vis = VISIBLE;
+ }
+ child.setVisibility(vis);
+ }
+ }
+
+ void setAllChildrenVisible() {
+ for (int i = 0, childCount = getChildCount(); i < childCount; i++) {
+ final View child = getChildAt(i);
+ if (child.getVisibility() == INVISIBLE) {
+ child.setVisibility(VISIBLE);
+ }
+ }
+ }
+
+ private static boolean viewIsOpaque(View v) {
+ if (ViewCompat.isOpaque(v)) return true;
+
+ final Drawable bg = v.getBackground();
+ if (bg != null) {
+ return bg.getOpacity() == PixelFormat.OPAQUE;
+ }
+ return false;
+ }
+
+ @Override
+ protected void onAttachedToWindow() {
+ super.onAttachedToWindow();
+ mFirstLayout = true;
+ }
+
+ @Override
+ protected void onDetachedFromWindow() {
+ super.onDetachedFromWindow();
+ mFirstLayout = true;
+
+ for (int i = 0, count = mPostedRunnables.size(); i < count; i++) {
+ final DisableLayerRunnable dlr = mPostedRunnables.get(i);
+ dlr.run();
+ }
+ mPostedRunnables.clear();
+ }
+
+ @Override
+ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+
+ int widthMode = MeasureSpec.getMode(widthMeasureSpec);
+ int widthSize = MeasureSpec.getSize(widthMeasureSpec);
+ int heightMode = MeasureSpec.getMode(heightMeasureSpec);
+ int heightSize = MeasureSpec.getSize(heightMeasureSpec);
+
+ if (widthMode != MeasureSpec.EXACTLY) {
+ if (isInEditMode()) {
+ // Don't crash the layout editor. Consume all of the space if specified
+ // or pick a magic number from thin air otherwise.
+ // TODO Better communication with tools of this bogus state.
+ // It will crash on a real device.
+ if (widthMode == MeasureSpec.AT_MOST) {
+ widthMode = MeasureSpec.EXACTLY;
+ } else if (widthMode == MeasureSpec.UNSPECIFIED) {
+ widthMode = MeasureSpec.EXACTLY;
+ widthSize = 300;
+ }
+ } else {
+ throw new IllegalStateException("Width must have an exact value or MATCH_PARENT");
+ }
+ } else if (heightMode == MeasureSpec.UNSPECIFIED) {
+ if (isInEditMode()) {
+ // Don't crash the layout editor. Pick a magic number from thin air instead.
+ // TODO Better communication with tools of this bogus state.
+ // It will crash on a real device.
+ if (heightMode == MeasureSpec.UNSPECIFIED) {
+ heightMode = MeasureSpec.AT_MOST;
+ heightSize = 300;
+ }
+ } else {
+ throw new IllegalStateException("Height must not be UNSPECIFIED");
+ }
+ }
+
+ int layoutWidth = 0;
+ int maxLayoutWidth = -1;
+ switch (widthMode) {
+ case MeasureSpec.EXACTLY:
+ layoutWidth = maxLayoutWidth = widthSize - getPaddingLeft() - getPaddingRight();
+ break;
+ case MeasureSpec.AT_MOST:
+ maxLayoutWidth = widthSize - getPaddingLeft() - getPaddingRight();
+ break;
+ }
+
+ float weightSum = 0;
+ boolean canSlide = false;
+ final int heightAvailable = heightSize - getPaddingTop() - getPaddingBottom();
+ int heightRemaining = heightAvailable;
+ final int childCount = getChildCount();
+
+ if (childCount > 2) {
+ Log.e(TAG, "onMeasure: More than two child views are not supported.");
+ }
+
+ // We'll find the current one below.
+ mSlideableView = null;
+
+ // First pass. Measure based on child LayoutParams width/height.
+ // Weight will incur a second pass.
+ for (int i = 0; i < childCount; i++) {
+ final View child = getChildAt(i);
+ final LayoutParams lp = (LayoutParams) child.getLayoutParams();
+
+ if (child.getVisibility() == GONE) {
+ lp.dimWhenOffset = false;
+ continue;
+ }
+
+ if (lp.weight > 0) {
+ weightSum += lp.weight;
+
+ // If we have no height, weight is the only contributor to the final size.
+ // Measure this view on the weight pass only.
+ if (lp.height == 0) continue;
+ }
+
+ int childHeightSpec;
+ final int verticalMargin = lp.topMargin + lp.bottomMargin;
+ if (lp.height == LayoutParams.WRAP_CONTENT) {
+ childHeightSpec = MeasureSpec.makeMeasureSpec(heightAvailable - verticalMargin,
+ MeasureSpec.AT_MOST);
+ } else if (lp.height == LayoutParams.MATCH_PARENT) {
+ childHeightSpec = MeasureSpec.makeMeasureSpec(heightAvailable - verticalMargin,
+ MeasureSpec.EXACTLY);
+ } else {
+ childHeightSpec = MeasureSpec.makeMeasureSpec(lp.height, MeasureSpec.EXACTLY);
+ }
+
+ int childWidthSpec;
+ if (lp.width == LayoutParams.WRAP_CONTENT) {
+ childWidthSpec = MeasureSpec.makeMeasureSpec(maxLayoutWidth, MeasureSpec.AT_MOST);
+ } else if (lp.width == LayoutParams.MATCH_PARENT) {
+ childWidthSpec = MeasureSpec.makeMeasureSpec(maxLayoutWidth, MeasureSpec.EXACTLY);
+ } else {
+ childWidthSpec = MeasureSpec.makeMeasureSpec(lp.width, MeasureSpec.EXACTLY);
+ }
+
+ child.measure(childWidthSpec, childHeightSpec);
+ final int childWidth = child.getMeasuredWidth();
+ final int childHeight = child.getMeasuredHeight();
+
+ if (widthMode == MeasureSpec.AT_MOST && childWidth > layoutWidth) {
+ layoutWidth = Math.min(childWidth, maxLayoutWidth);
+ }
+
+ heightRemaining -= childHeight;
+ canSlide |= lp.slideable = heightRemaining < 0;
+ if (lp.slideable) {
+ mSlideableView = child;
+ }
+ }
+
+ // Resolve weight and make sure non-sliding panels are smaller than the full screen.
+ if (canSlide || weightSum > 0) {
+ final int fixedPanelHeightLimit = heightAvailable - mOverhangSize;
+
+ for (int i = 0; i < childCount; i++) {
+ final View child = getChildAt(i);
+
+ if (child.getVisibility() == GONE) {
+ continue;
+ }
+
+ final LayoutParams lp = (LayoutParams) child.getLayoutParams();
+
+ if (child.getVisibility() == GONE) {
+ continue;
+ }
+
+ final boolean skippedFirstPass = lp.height == 0 && lp.weight > 0;
+ final int measuredHeight = skippedFirstPass ? 0 : child.getMeasuredHeight();
+ if (canSlide && child != mSlideableView) {
+ if (lp.height < 0 && (measuredHeight > fixedPanelHeightLimit || lp.weight > 0)) {
+ // Fixed panels in a sliding configuration should
+ // be clamped to the fixed panel limit.
+ final int childWidthSpec;
+ if (skippedFirstPass) {
+ // Do initial width measurement if we skipped measuring this view
+ // the first time around.
+ if (lp.width == LayoutParams.WRAP_CONTENT) {
+ childWidthSpec = MeasureSpec.makeMeasureSpec(maxLayoutWidth,
+ MeasureSpec.AT_MOST);
+ } else if (lp.height == LayoutParams.MATCH_PARENT) {
+ childWidthSpec = MeasureSpec.makeMeasureSpec(maxLayoutWidth,
+ MeasureSpec.EXACTLY);
+ } else {
+ childWidthSpec = MeasureSpec.makeMeasureSpec(lp.width,
+ MeasureSpec.EXACTLY);
+ }
+ } else {
+ childWidthSpec = MeasureSpec.makeMeasureSpec(
+ child.getMeasuredWidth(), MeasureSpec.EXACTLY);
+ }
+ final int childHeightSpec = MeasureSpec.makeMeasureSpec(
+ fixedPanelHeightLimit, MeasureSpec.EXACTLY);
+ child.measure(childWidthSpec, childHeightSpec);
+ }
+ } else if (lp.weight > 0) {
+ int childWidthSpec;
+ if (lp.height == 0) {
+ // This was skipped the first time; figure out a real width spec.
+ if (lp.width == LayoutParams.WRAP_CONTENT) {
+ childWidthSpec = MeasureSpec.makeMeasureSpec(maxLayoutWidth,
+ MeasureSpec.AT_MOST);
+ } else if (lp.width == LayoutParams.MATCH_PARENT) {
+ childWidthSpec = MeasureSpec.makeMeasureSpec(maxLayoutWidth,
+ MeasureSpec.EXACTLY);
+ } else {
+ childWidthSpec = MeasureSpec.makeMeasureSpec(lp.width,
+ MeasureSpec.EXACTLY);
+ }
+ } else {
+ childWidthSpec = MeasureSpec.makeMeasureSpec(
+ child.getMeasuredWidth(), MeasureSpec.EXACTLY);
+ }
+
+ if (canSlide) {
+ // Consume available space
+ final int verticalMargin = lp.topMargin + lp.bottomMargin;
+ final int newHeight = heightAvailable - verticalMargin;
+ final int childHeightSpec = MeasureSpec.makeMeasureSpec(
+ newHeight, MeasureSpec.EXACTLY);
+ if (measuredHeight != newHeight) {
+ child.measure(childWidthSpec, childHeightSpec);
+ }
+ } else {
+ // Distribute the extra width proportionally similar to LinearLayout
+ final int heightToDistribute = Math.max(0, heightRemaining);
+ final int addedHeight = (int) (lp.weight * heightToDistribute / weightSum);
+ final int childHeightSpec = MeasureSpec.makeMeasureSpec(
+ measuredHeight + addedHeight, MeasureSpec.EXACTLY);
+ child.measure(childWidthSpec, childHeightSpec);
+ }
+ }
+ }
+ }
+
+ final int measuredHeight = heightSize;
+ final int measuredWidth = layoutWidth + getPaddingLeft() + getPaddingRight();
+
+ setMeasuredDimension(measuredWidth, measuredHeight);
+ mCanSlide = canSlide;
+
+ if (mDragHelper.getViewDragState() != ViewDragHelper.STATE_IDLE && !canSlide) {
+ // Cancel scrolling in progress, it's no longer relevant.
+ mDragHelper.abort();
+ }
+ }
+
+ @Override
+ protected void onLayout(boolean changed, int l, int t, int r, int b) {
+ mDragHelper.setEdgeTrackingEnabled(ViewDragHelper.EDGE_TOP);
+
+ final int height = b - t;
+ final int paddingTop = getPaddingTop();
+ final int paddingBottom = getPaddingBottom();
+ final int paddingLeft = getPaddingLeft();
+
+ final int childCount = getChildCount();
+ int yStart = paddingTop;
+ int nextYStart = yStart;
+
+ if (mFirstLayout) {
+ mSlideOffset = mCanSlide && mPreservedOpenState ? 1.f : 0.f;
+ }
+
+ for (int i = 0; i < childCount; i++) {
+ final View child = getChildAt(i);
+
+ if (child.getVisibility() == GONE) {
+ continue;
+ }
+
+ final LayoutParams lp = (LayoutParams) child.getLayoutParams();
+
+ final int childHeight = child.getMeasuredHeight();
+
+ if (lp.slideable) {
+ final int margin = lp.topMargin + lp.bottomMargin;
+ final int range = Math.min(nextYStart,
+ height - paddingBottom - mOverhangSize) - yStart - margin;
+ mSlideRange = range;
+ final int lpMargin = lp.topMargin;
+ lp.dimWhenOffset = yStart + lpMargin + range + childHeight / 2 >
+ height - paddingBottom;
+ final int pos = (int) (range * mSlideOffset);
+ yStart += pos + lpMargin;
+ mSlideOffset = (float) pos / mSlideRange;
+ } else {
+ yStart = nextYStart;
+ }
+
+ final int childTop = yStart;
+ final int childBottom = childTop + childHeight;
+ final int childLeft = paddingLeft;
+ final int childRight = childLeft + child.getMeasuredWidth();
+
+ child.layout(childLeft, childTop, childRight, childBottom);
+
+ nextYStart += child.getHeight();
+ }
+
+ if (mFirstLayout) {
+ if (mCanSlide) {
+ if (((LayoutParams) mSlideableView.getLayoutParams()).dimWhenOffset) {
+ dimChildView(mSlideableView, mSlideOffset, mSliderFadeColor);
+ }
+ } else {
+ // Reset the dim level of all children; it's irrelevant when nothing moves.
+ for (int i = 0; i < childCount; i++) {
+ dimChildView(getChildAt(i), 0, mSliderFadeColor);
+ }
+ }
+ updateObscuredViewsVisibility(mSlideableView);
+ }
+
+ mFirstLayout = false;
+ }
+
+ @Override
+ protected void onSizeChanged(int w, int h, int oldw, int oldh) {
+ super.onSizeChanged(w, h, oldw, oldh);
+ // Recalculate sliding panes and their details
+ if (h != oldh) {
+ mFirstLayout = true;
+ }
+ }
+
+ @Override
+ public void requestChildFocus(View child, View focused) {
+ super.requestChildFocus(child, focused);
+ if (!isInTouchMode() && !mCanSlide) {
+ mPreservedOpenState = child == mSlideableView;
+ }
+ }
+
+ @Override
+ public boolean onInterceptTouchEvent(MotionEvent ev) {
+ final int action = MotionEventCompat.getActionMasked(ev);
+
+ // Preserve the open state based on the last view that was touched.
+ if (!mCanSlide && action == MotionEvent.ACTION_DOWN && getChildCount() > 1) {
+ // After the first things will be slideable.
+ final View secondChild = getChildAt(1);
+ if (secondChild != null) {
+ mPreservedOpenState = !mDragHelper.isViewUnder(secondChild,
+ (int) ev.getX(), (int) ev.getY());
+ }
+ }
+
+ if (!mCanSlide || (mIsUnableToDrag && action != MotionEvent.ACTION_DOWN)) {
+ mDragHelper.cancel();
+ return super.onInterceptTouchEvent(ev);
+ }
+
+ if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {
+ mDragHelper.cancel();
+ return false;
+ }
+
+ boolean interceptTap = false;
+
+ switch (action) {
+ case MotionEvent.ACTION_DOWN: {
+ mIsUnableToDrag = false;
+ final float x = ev.getX();
+ final float y = ev.getY();
+ mInitialMotionX = x;
+ mInitialMotionY = y;
+
+ if (mDragHelper.isViewUnder(mSlideableView, (int) x, (int) y) &&
+ isDimmed(mSlideableView)) {
+ interceptTap = true;
+ }
+ break;
+ }
+
+ case MotionEvent.ACTION_MOVE: {
+ final float x = ev.getX();
+ final float y = ev.getY();
+ final float adx = Math.abs(x - mInitialMotionX);
+ final float ady = Math.abs(y - mInitialMotionY);
+ final int slop = mDragHelper.getTouchSlop();
+ if (ady > slop && adx > ady || !isCapturableViewUnder((int) x, (int) y)) {
+ mDragHelper.cancel();
+ mIsUnableToDrag = true;
+ return false;
+ }
+ }
+ }
+
+ final boolean interceptForDrag = mDragHelper.shouldInterceptTouchEvent(ev);
+
+ return interceptForDrag || interceptTap;
+ }
+
+ @Override
+ public boolean onTouchEvent(MotionEvent ev) {
+ if (!mCanSlide) {
+ return super.onTouchEvent(ev);
+ }
+
+ mDragHelper.processTouchEvent(ev);
+
+ final int action = ev.getAction();
+ boolean wantTouchEvents = true;
+
+ switch (action & MotionEventCompat.ACTION_MASK) {
+ case MotionEvent.ACTION_DOWN: {
+ final float x = ev.getX();
+ final float y = ev.getY();
+ mInitialMotionX = x;
+ mInitialMotionY = y;
+ break;
+ }
+
+ case MotionEvent.ACTION_UP: {
+ if (isDimmed(mSlideableView)) {
+ final float x = ev.getX();
+ final float y = ev.getY();
+ final float dx = x - mInitialMotionX;
+ final float dy = y - mInitialMotionY;
+ final int slop = mDragHelper.getTouchSlop();
+ if (dx * dx + dy * dy < slop * slop &&
+ mDragHelper.isViewUnder(mSlideableView, (int) x, (int) y)) {
+ // Taps close a dimmed open pane.
+ closePane(mSlideableView, 0);
+ break;
+ }
+ }
+ break;
+ }
+ }
+
+ return wantTouchEvents;
+ }
+
+ private boolean closePane(View pane, int initialVelocity) {
+ if (mFirstLayout || smoothSlideTo(0.f, initialVelocity)) {
+ mPreservedOpenState = false;
+ return true;
+ }
+ return false;
+ }
+
+ private boolean openPane(View pane, int initialVelocity) {
+ if (mFirstLayout || smoothSlideTo(1.f, initialVelocity)) {
+ mPreservedOpenState = true;
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * Open the sliding pane if it is currently slideable. If first layout
+ * has already completed this will animate.
+ *
+ * @return true if the pane was slideable and is now open/in the process of opening
+ */
+ public boolean openPane() {
+ return openPane(mSlideableView, 0);
+ }
+
+ /**
+ * Close the sliding pane if it is currently slideable. If first layout
+ * has already completed this will animate.
+ *
+ * @return true if the pane was slideable and is now closed/in the process of closing
+ */
+ public boolean closePane() {
+ return closePane(mSlideableView, 0);
+ }
+
+ /**
+ * Check if the layout is completely open. It can be open either because the slider
+ * itself is open revealing the left pane, or if all content fits without sliding.
+ *
+ * @return true if sliding panels are completely open
+ */
+ public boolean isOpen() {
+ return !mCanSlide || mSlideOffset == 1;
+ }
+
+ /**
+ * Check if the content in this layout cannot fully fit side by side and therefore
+ * the content pane can be slid back and forth.
+ *
+ * @return true if content in this layout can be slid open and closed
+ */
+ public boolean isSlideable() {
+ return mCanSlide;
+ }
+
+ private void onPanelDragged(int newTop) {
+ if (mSlideableView == null) {
+ // This can happen if we're aborting motion during layout because everything now fits.
+ mSlideOffset = 0;
+ return;
+ }
+ final LayoutParams lp = (LayoutParams) mSlideableView.getLayoutParams();
+
+ final int lpMargin = lp.topMargin;
+ final int topBound = getPaddingTop() + lpMargin;
+
+ mSlideOffset = (float) (newTop - topBound) / mSlideRange;
+
+ if (lp.dimWhenOffset) {
+ dimChildView(mSlideableView, mSlideOffset, mSliderFadeColor);
+ }
+ dispatchOnPanelSlide(mSlideableView);
+ }
+
+ private void dimChildView(View v, float mag, int fadeColor) {
+ final LayoutParams lp = (LayoutParams) v.getLayoutParams();
+
+ if (mag > 0 && fadeColor != 0) {
+ final int baseAlpha = (fadeColor & 0xff000000) >>> 24;
+ int imag = (int) (baseAlpha * mag);
+ int color = imag << 24 | (fadeColor & 0xffffff);
+ if (lp.dimPaint == null) {
+ lp.dimPaint = new Paint();
+ }
+ lp.dimPaint.setColorFilter(new PorterDuffColorFilter(color, PorterDuff.Mode.SRC_OVER));
+ if (ViewCompat.getLayerType(v) != ViewCompat.LAYER_TYPE_HARDWARE) {
+ ViewCompat.setLayerType(v, ViewCompat.LAYER_TYPE_HARDWARE, lp.dimPaint);
+ }
+ invalidateChildRegion(v);
+ } else if (ViewCompat.getLayerType(v) != ViewCompat.LAYER_TYPE_NONE) {
+ if (lp.dimPaint != null) {
+ lp.dimPaint.setColorFilter(null);
+ }
+ final DisableLayerRunnable dlr = new DisableLayerRunnable(v);
+ mPostedRunnables.add(dlr);
+ ViewCompat.postOnAnimation(this, dlr);
+ }
+ }
+
+ @Override
+ protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
+ final LayoutParams lp = (LayoutParams) child.getLayoutParams();
+ boolean result;
+ final int save = canvas.save(Canvas.CLIP_SAVE_FLAG);
+
+ if (mCanSlide && !lp.slideable && mSlideableView != null) {
+ // Clip against the slider; no sense drawing what will immediately be covered.
+ canvas.getClipBounds(mTmpRect);
+
+ mTmpRect.bottom = Math.min(mTmpRect.bottom, mSlideableView.getTop());
+ canvas.clipRect(mTmpRect);
+ }
+
+ if (Build.VERSION.SDK_INT >= 11) { // HC
+ result = super.drawChild(canvas, child, drawingTime);
+ } else {
+ if (lp.dimWhenOffset && mSlideOffset > 0) {
+ if (!child.isDrawingCacheEnabled()) {
+ child.setDrawingCacheEnabled(true);
+ }
+ final Bitmap cache = child.getDrawingCache();
+ if (cache != null) {
+ canvas.drawBitmap(cache, child.getLeft(), child.getTop(), lp.dimPaint);
+ result = false;
+ } else {
+ Log.e(TAG, "drawChild: child view " + child + " returned null drawing cache");
+ result = super.drawChild(canvas, child, drawingTime);
+ }
+ } else {
+ if (child.isDrawingCacheEnabled()) {
+ child.setDrawingCacheEnabled(false);
+ }
+ result = super.drawChild(canvas, child, drawingTime);
+ }
+ }
+
+ canvas.restoreToCount(save);
+
+ return result;
+ }
+
+ private void invalidateChildRegion(View v) {
+ ViewCompat.setLayerPaint(v, ((LayoutParams) v.getLayoutParams()).dimPaint);
+ }
+
+ /**
+ * Smoothly animate mDraggingPane to the target X position within its range.
+ *
+ * @param slideOffset position to animate to
+ * @param velocity initial velocity in case of fling, or 0.
+ */
+ boolean smoothSlideTo(float slideOffset, int velocity) {
+ if (!mCanSlide) {
+ // Nothing to do.
+ return false;
+ }
+
+ final LayoutParams lp = (LayoutParams) mSlideableView.getLayoutParams();
+
+ int y;
+ int topBound = getPaddingTop() + lp.topMargin;
+ y = (int) (topBound + slideOffset * mSlideRange);
+
+ if (mDragHelper.smoothSlideViewTo(mSlideableView, mSlideableView.getLeft(), y)) {
+ setAllChildrenVisible();
+ ViewCompat.postInvalidateOnAnimation(this);
+ return true;
+ }
+ return false;
+ }
+
+ @Override
+ public void computeScroll() {
+ if (mDragHelper.continueSettling(true)) {
+ if (!mCanSlide) {
+ mDragHelper.abort();
+ return;
+ }
+
+ ViewCompat.postInvalidateOnAnimation(this);
+ }
+ }
+
+ private boolean isCapturableViewUnder(int x, int y) {
+ View capturableView = mCapturableView != null ? mCapturableView : mSlideableView;
+ if (capturableView == null) {
+ return false;
+ }
+ int[] viewLocation = new int[2];
+ capturableView.getLocationOnScreen(viewLocation);
+ int[] parentLocation = new int[2];
+ this.getLocationOnScreen(parentLocation);
+ int screenX = parentLocation[0] + x;
+ int screenY = parentLocation[1] + y;
+ return screenX >= viewLocation[0]
+ && screenX < viewLocation[0] + capturableView.getWidth()
+ && screenY >= viewLocation[1]
+ && screenY < viewLocation[1] + capturableView.getHeight();
+ }
+
+ boolean isDimmed(View child) {
+ if (child == null) {
+ return false;
+ }
+ final LayoutParams lp = (LayoutParams) child.getLayoutParams();
+ return mCanSlide && lp.dimWhenOffset && mSlideOffset > 0;
+ }
+
+ @Override
+ protected ViewGroup.LayoutParams generateDefaultLayoutParams() {
+ return new LayoutParams();
+ }
+
+ @Override
+ protected ViewGroup.LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) {
+ return p instanceof MarginLayoutParams
+ ? new LayoutParams((MarginLayoutParams) p)
+ : new LayoutParams(p);
+ }
+
+ @Override
+ protected boolean checkLayoutParams(ViewGroup.LayoutParams p) {
+ return p instanceof LayoutParams && super.checkLayoutParams(p);
+ }
+
+ @Override
+ public ViewGroup.LayoutParams generateLayoutParams(AttributeSet attrs) {
+ return new LayoutParams(getContext(), attrs);
+ }
+
+ @Override
+ protected Parcelable onSaveInstanceState() {
+ Parcelable superState = super.onSaveInstanceState();
+
+ SavedState ss = new SavedState(superState);
+ ss.isOpen = isSlideable() ? isOpen() : mPreservedOpenState;
+
+ return ss;
+ }
+
+ @Override
+ protected void onRestoreInstanceState(Parcelable state) {
+ SavedState ss = (SavedState) state;
+ super.onRestoreInstanceState(ss.getSuperState());
+
+ if (ss.isOpen) {
+ openPane();
+ } else {
+ closePane();
+ }
+ mPreservedOpenState = ss.isOpen;
+ }
+
+ private class DragHelperCallback extends ViewDragHelper.Callback {
+
+ @Override
+ public boolean tryCaptureView(View child, int pointerId) {
+ if (mIsUnableToDrag) {
+ return false;
+ }
+
+ return ((LayoutParams) child.getLayoutParams()).slideable;
+ }
+
+ @Override
+ public void onViewDragStateChanged(int state) {
+ if (mDragHelper.getViewDragState() == ViewDragHelper.STATE_IDLE) {
+ if (mSlideOffset == 0) {
+ updateObscuredViewsVisibility(mSlideableView);
+ dispatchOnPanelClosed(mSlideableView);
+ mPreservedOpenState = false;
+ } else {
+ dispatchOnPanelOpened(mSlideableView);
+ mPreservedOpenState = true;
+ }
+ }
+ }
+
+ @Override
+ public void onViewCaptured(View capturedChild, int activePointerId) {
+ // Make all child views visible in preparation for sliding things around
+ setAllChildrenVisible();
+ }
+
+ @Override
+ public void onViewPositionChanged(View changedView, int left, int top, int dx, int dy) {
+ onPanelDragged(top);
+ invalidate();
+ }
+
+ @Override
+ public void onViewReleased(View releasedChild, float xvel, float yvel) {
+ final LayoutParams lp = (LayoutParams) releasedChild.getLayoutParams();
+
+ int top = getPaddingTop() + lp.topMargin;
+ if (yvel > 0 || (yvel == 0 && mSlideOffset > 0.5f)) {
+ top += mSlideRange;
+ }
+
+ int left;
+ mDragHelper.settleCapturedViewAt(releasedChild.getLeft(), top);
+ invalidate();
+ }
+
+ @Override
+ public int getViewVerticalDragRange(View child) {
+ return mSlideRange;
+ }
+
+ @Override
+ public int clampViewPositionHorizontal(View child, int left, int dx) {
+ // Make sure we never move views horizontally.
+ return child.getLeft();
+ }
+
+ @Override
+ public int clampViewPositionVertical(View child, int top, int dy) {
+ final LayoutParams lp = (LayoutParams) mSlideableView.getLayoutParams();
+
+ final int newTop;
+ int topBound = getPaddingTop() + lp.topMargin;
+ int bottomBound = topBound + mSlideRange;
+ newTop = Math.min(Math.max(top, topBound), bottomBound);
+
+ return newTop;
+ }
+
+ @Override
+ public void onEdgeDragStarted(int edgeFlags, int pointerId) {
+ mDragHelper.captureChildView(mSlideableView, pointerId);
+ }
+ }
+
+ public static class LayoutParams extends ViewGroup.MarginLayoutParams {
+ private static final int[] ATTRS = new int[] {
+ android.R.attr.layout_weight
+ };
+
+ /**
+ * The weighted proportion of how much of the leftover space
+ * this child should consume after measurement.
+ */
+ public float weight = 0;
+
+ /**
+ * True if this pane is the slideable pane in the layout.
+ */
+ boolean slideable;
+
+ /**
+ * True if this view should be drawn dimmed
+ * when it's been offset from its default position.
+ */
+ boolean dimWhenOffset;
+
+ Paint dimPaint;
+
+ public LayoutParams() {
+ super(FILL_PARENT, FILL_PARENT);
+ }
+
+ public LayoutParams(int width, int height) {
+ super(width, height);
+ }
+
+ public LayoutParams(android.view.ViewGroup.LayoutParams source) {
+ super(source);
+ }
+
+ public LayoutParams(MarginLayoutParams source) {
+ super(source);
+ }
+
+ public LayoutParams(LayoutParams source) {
+ super(source);
+ this.weight = source.weight;
+ }
+
+ public LayoutParams(Context c, AttributeSet attrs) {
+ super(c, attrs);
+
+ final TypedArray a = c.obtainStyledAttributes(attrs, ATTRS);
+ this.weight = a.getFloat(0, 0);
+ a.recycle();
+ }
+
+ }
+
+ static class SavedState extends BaseSavedState {
+ boolean isOpen;
+
+ SavedState(Parcelable superState) {
+ super(superState);
+ }
+
+ private SavedState(Parcel in) {
+ super(in);
+ isOpen = in.readInt() != 0;
+ }
+
+ @Override
+ public void writeToParcel(Parcel out, int flags) {
+ super.writeToParcel(out, flags);
+ out.writeInt(isOpen ? 1 : 0);
+ }
+
+ public static final Parcelable.Creator<SavedState> CREATOR =
+ new Parcelable.Creator<SavedState>() {
+ public SavedState createFromParcel(Parcel in) {
+ return new SavedState(in);
+ }
+
+ public SavedState[] newArray(int size) {
+ return new SavedState[size];
+ }
+ };
+ }
+
+ class AccessibilityDelegate extends AccessibilityDelegateCompat {
+ private final Rect mTmpRect = new Rect();
+
+ @Override
+ public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
+ final AccessibilityNodeInfoCompat superNode = AccessibilityNodeInfoCompat.obtain(info);
+ super.onInitializeAccessibilityNodeInfo(host, superNode);
+ copyNodeInfoNoChildren(info, superNode);
+ superNode.recycle();
+
+ info.setClassName(OverlappingPaneLayout.class.getName());
+ info.setSource(host);
+
+ final ViewParent parent = ViewCompat.getParentForAccessibility(host);
+ if (parent instanceof View) {
+ info.setParent((View) parent);
+ }
+
+ // This is a best-approximation of addChildrenForAccessibility()
+ // that accounts for filtering.
+ final int childCount = getChildCount();
+ for (int i = 0; i < childCount; i++) {
+ final View child = getChildAt(i);
+ if (!filter(child) && (child.getVisibility() == View.VISIBLE)) {
+ // Force importance to "yes" since we can't read the value.
+ ViewCompat.setImportantForAccessibility(
+ child, ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_YES);
+ info.addChild(child);
+ }
+ }
+ }
+
+ @Override
+ public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) {
+ super.onInitializeAccessibilityEvent(host, event);
+
+ event.setClassName(OverlappingPaneLayout.class.getName());
+ }
+
+ @Override
+ public boolean onRequestSendAccessibilityEvent(ViewGroup host, View child,
+ AccessibilityEvent event) {
+ if (!filter(child)) {
+ return super.onRequestSendAccessibilityEvent(host, child, event);
+ }
+ return false;
+ }
+
+ public boolean filter(View child) {
+ return isDimmed(child);
+ }
+
+ /**
+ * This should really be in AccessibilityNodeInfoCompat, but there unfortunately
+ * seem to be a few elements that are not easily cloneable using the underlying API.
+ * Leave it private here as it's not general-purpose useful.
+ */
+ private void copyNodeInfoNoChildren(AccessibilityNodeInfoCompat dest,
+ AccessibilityNodeInfoCompat src) {
+ final Rect rect = mTmpRect;
+
+ src.getBoundsInParent(rect);
+ dest.setBoundsInParent(rect);
+
+ src.getBoundsInScreen(rect);
+ dest.setBoundsInScreen(rect);
+
+ dest.setVisibleToUser(src.isVisibleToUser());
+ dest.setPackageName(src.getPackageName());
+ dest.setClassName(src.getClassName());
+ dest.setContentDescription(src.getContentDescription());
+
+ dest.setEnabled(src.isEnabled());
+ dest.setClickable(src.isClickable());
+ dest.setFocusable(src.isFocusable());
+ dest.setFocused(src.isFocused());
+ dest.setAccessibilityFocused(src.isAccessibilityFocused());
+ dest.setSelected(src.isSelected());
+ dest.setLongClickable(src.isLongClickable());
+
+ dest.addAction(src.getActions());
+
+ dest.setMovementGranularities(src.getMovementGranularities());
+ }
+ }
+
+ private class DisableLayerRunnable implements Runnable {
+ final View mChildView;
+
+ DisableLayerRunnable(View childView) {
+ mChildView = childView;
+ }
+
+ @Override
+ public void run() {
+ if (mChildView.getParent() == OverlappingPaneLayout.this) {
+ ViewCompat.setLayerType(mChildView, ViewCompat.LAYER_TYPE_NONE, null);
+ invalidateChildRegion(mChildView);
+ }
+ mPostedRunnables.remove(this);
+ }
+ }
+}