diff options
| -rw-r--r-- | res/layout/lists_fragment.xml | 37 | ||||
| -rw-r--r-- | src/com/android/dialer/list/ListsFragment.java | 12 | ||||
| -rw-r--r-- | src/com/android/dialer/widget/OverlappingPaneLayout.java | 1256 |
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); + } + } +} |