| |
| /* |
| * Copyright (C) 2008 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.launcher3.dragndrop; |
| |
| import static android.view.View.MeasureSpec.EXACTLY; |
| import static android.view.View.MeasureSpec.getMode; |
| import static android.view.View.MeasureSpec.getSize; |
| |
| import static com.android.launcher3.compat.AccessibilityManagerCompat.sendCustomAccessibilityEvent; |
| |
| import android.animation.Animator; |
| import android.animation.AnimatorListenerAdapter; |
| import android.animation.TimeInterpolator; |
| import android.animation.ValueAnimator; |
| import android.animation.ValueAnimator.AnimatorUpdateListener; |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.graphics.Canvas; |
| import android.graphics.Rect; |
| import android.util.AttributeSet; |
| import android.view.Gravity; |
| import android.view.KeyEvent; |
| import android.view.MotionEvent; |
| import android.view.View; |
| import android.view.accessibility.AccessibilityEvent; |
| import android.view.accessibility.AccessibilityManager; |
| import android.view.animation.Interpolator; |
| import android.widget.FrameLayout; |
| import android.widget.TextView; |
| |
| import com.android.launcher3.AbstractFloatingView; |
| import com.android.launcher3.CellLayout; |
| import com.android.launcher3.DropTargetBar; |
| import com.android.launcher3.Launcher; |
| import com.android.launcher3.R; |
| import com.android.launcher3.ShortcutAndWidgetContainer; |
| import com.android.launcher3.Workspace; |
| import com.android.launcher3.anim.Interpolators; |
| import com.android.launcher3.folder.Folder; |
| import com.android.launcher3.folder.FolderIcon; |
| import com.android.launcher3.graphics.OverviewScrim; |
| import com.android.launcher3.graphics.RotationMode; |
| import com.android.launcher3.graphics.WorkspaceAndHotseatScrim; |
| import com.android.launcher3.keyboard.ViewGroupFocusHelper; |
| import com.android.launcher3.uioverrides.UiFactory; |
| import com.android.launcher3.util.Thunk; |
| import com.android.launcher3.views.BaseDragLayer; |
| import com.android.launcher3.views.Transposable; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * A ViewGroup that coordinates dragging across its descendants |
| */ |
| public class DragLayer extends BaseDragLayer<Launcher> { |
| |
| public static final int ALPHA_INDEX_OVERLAY = 0; |
| public static final int ALPHA_INDEX_LAUNCHER_LOAD = 1; |
| public static final int ALPHA_INDEX_TRANSITIONS = 2; |
| private static final int ALPHA_CHANNEL_COUNT = 3; |
| |
| public static final int ANIMATION_END_DISAPPEAR = 0; |
| public static final int ANIMATION_END_REMAIN_VISIBLE = 2; |
| |
| @Thunk DragController mDragController; |
| |
| // Variables relating to animation of views after drop |
| private ValueAnimator mDropAnim = null; |
| private final TimeInterpolator mCubicEaseOutInterpolator = Interpolators.DEACCEL_1_5; |
| @Thunk DragView mDropView = null; |
| @Thunk int mAnchorViewInitialScrollX = 0; |
| @Thunk View mAnchorView = null; |
| |
| private boolean mHoverPointClosesFolder = false; |
| |
| private int mTopViewIndex; |
| private int mChildCountOnLastUpdate = -1; |
| |
| // Related to adjacent page hints |
| private final ViewGroupFocusHelper mFocusIndicatorHelper; |
| private final WorkspaceAndHotseatScrim mWorkspaceScrim; |
| private final OverviewScrim mOverviewScrim; |
| |
| /** |
| * Used to create a new DragLayer from XML. |
| * |
| * @param context The application's context. |
| * @param attrs The attributes set containing the Workspace's customization values. |
| */ |
| public DragLayer(Context context, AttributeSet attrs) { |
| super(context, attrs, ALPHA_CHANNEL_COUNT); |
| |
| // Disable multitouch across the workspace/all apps/customize tray |
| setMotionEventSplittingEnabled(false); |
| setChildrenDrawingOrderEnabled(true); |
| |
| mFocusIndicatorHelper = new ViewGroupFocusHelper(this); |
| mWorkspaceScrim = new WorkspaceAndHotseatScrim(this); |
| mOverviewScrim = new OverviewScrim(this); |
| } |
| |
| public void setup(DragController dragController, Workspace workspace) { |
| mDragController = dragController; |
| mWorkspaceScrim.setWorkspace(workspace); |
| recreateControllers(); |
| } |
| |
| public void recreateControllers() { |
| mControllers = UiFactory.createTouchControllers(mActivity); |
| } |
| |
| public ViewGroupFocusHelper getFocusIndicatorHelper() { |
| return mFocusIndicatorHelper; |
| } |
| |
| @Override |
| public boolean dispatchKeyEvent(KeyEvent event) { |
| return mDragController.dispatchKeyEvent(event) || super.dispatchKeyEvent(event); |
| } |
| |
| private boolean isEventOverAccessibleDropTargetBar(MotionEvent ev) { |
| return isInAccessibleDrag() && isEventOverView(mActivity.getDropTargetBar(), ev); |
| } |
| |
| @Override |
| public boolean onInterceptHoverEvent(MotionEvent ev) { |
| if (mActivity == null || mActivity.getWorkspace() == null) { |
| return false; |
| } |
| AbstractFloatingView topView = AbstractFloatingView.getTopOpenView(mActivity); |
| if (!(topView instanceof Folder)) { |
| return false; |
| } else { |
| AccessibilityManager accessibilityManager = (AccessibilityManager) |
| getContext().getSystemService(Context.ACCESSIBILITY_SERVICE); |
| if (accessibilityManager.isTouchExplorationEnabled()) { |
| Folder currentFolder = (Folder) topView; |
| final int action = ev.getAction(); |
| boolean isOverFolderOrSearchBar; |
| switch (action) { |
| case MotionEvent.ACTION_HOVER_ENTER: |
| isOverFolderOrSearchBar = isEventOverView(topView, ev) || |
| isEventOverAccessibleDropTargetBar(ev); |
| if (!isOverFolderOrSearchBar) { |
| sendTapOutsideFolderAccessibilityEvent(currentFolder.isEditingName()); |
| mHoverPointClosesFolder = true; |
| return true; |
| } |
| mHoverPointClosesFolder = false; |
| break; |
| case MotionEvent.ACTION_HOVER_MOVE: |
| isOverFolderOrSearchBar = isEventOverView(topView, ev) || |
| isEventOverAccessibleDropTargetBar(ev); |
| if (!isOverFolderOrSearchBar && !mHoverPointClosesFolder) { |
| sendTapOutsideFolderAccessibilityEvent(currentFolder.isEditingName()); |
| mHoverPointClosesFolder = true; |
| return true; |
| } else if (!isOverFolderOrSearchBar) { |
| return true; |
| } |
| mHoverPointClosesFolder = false; |
| } |
| } |
| } |
| return false; |
| } |
| |
| private void sendTapOutsideFolderAccessibilityEvent(boolean isEditingName) { |
| int stringId = isEditingName ? R.string.folder_tap_to_rename : R.string.folder_tap_to_close; |
| sendCustomAccessibilityEvent( |
| this, AccessibilityEvent.TYPE_VIEW_FOCUSED, getContext().getString(stringId)); |
| } |
| |
| @Override |
| public boolean onHoverEvent(MotionEvent ev) { |
| // If we've received this, we've already done the necessary handling |
| // in onInterceptHoverEvent. Return true to consume the event. |
| return false; |
| } |
| |
| |
| private boolean isInAccessibleDrag() { |
| return mActivity.getAccessibilityDelegate().isInAccessibleDrag(); |
| } |
| |
| @Override |
| public boolean onRequestSendAccessibilityEvent(View child, AccessibilityEvent event) { |
| if (isInAccessibleDrag() && child instanceof DropTargetBar) { |
| return true; |
| } |
| return super.onRequestSendAccessibilityEvent(child, event); |
| } |
| |
| @Override |
| public void addChildrenForAccessibility(ArrayList<View> childrenForAccessibility) { |
| View topView = AbstractFloatingView.getTopOpenViewWithType(mActivity, |
| AbstractFloatingView.TYPE_ACCESSIBLE); |
| if (topView != null) { |
| addAccessibleChildToList(topView, childrenForAccessibility); |
| if (isInAccessibleDrag()) { |
| addAccessibleChildToList(mActivity.getDropTargetBar(), childrenForAccessibility); |
| } |
| } else { |
| super.addChildrenForAccessibility(childrenForAccessibility); |
| } |
| } |
| |
| @Override |
| public boolean dispatchUnhandledMove(View focused, int direction) { |
| return super.dispatchUnhandledMove(focused, direction) |
| || mDragController.dispatchUnhandledMove(focused, direction); |
| } |
| |
| @Override |
| public boolean dispatchTouchEvent(MotionEvent ev) { |
| ev.offsetLocation(getTranslationX(), 0); |
| try { |
| return super.dispatchTouchEvent(ev); |
| } finally { |
| ev.offsetLocation(-getTranslationX(), 0); |
| } |
| } |
| |
| public void animateViewIntoPosition(DragView dragView, final int[] pos, float alpha, |
| float scaleX, float scaleY, int animationEndStyle, Runnable onFinishRunnable, |
| int duration) { |
| Rect r = new Rect(); |
| getViewRectRelativeToSelf(dragView, r); |
| final int fromX = r.left; |
| final int fromY = r.top; |
| |
| animateViewIntoPosition(dragView, fromX, fromY, pos[0], pos[1], alpha, 1, 1, scaleX, scaleY, |
| onFinishRunnable, animationEndStyle, duration, null); |
| } |
| |
| public void animateViewIntoPosition(DragView dragView, final View child, View anchorView) { |
| animateViewIntoPosition(dragView, child, -1, anchorView); |
| } |
| |
| public void animateViewIntoPosition(DragView dragView, final View child, int duration, |
| View anchorView) { |
| ShortcutAndWidgetContainer parentChildren = (ShortcutAndWidgetContainer) child.getParent(); |
| CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); |
| parentChildren.measureChild(child); |
| |
| Rect r = new Rect(); |
| getViewRectRelativeToSelf(dragView, r); |
| |
| float coord[] = new float[2]; |
| float childScale = child.getScaleX(); |
| coord[0] = lp.x + (child.getMeasuredWidth() * (1 - childScale) / 2); |
| coord[1] = lp.y + (child.getMeasuredHeight() * (1 - childScale) / 2); |
| |
| // Since the child hasn't necessarily been laid out, we force the lp to be updated with |
| // the correct coordinates (above) and use these to determine the final location |
| float scale = getDescendantCoordRelativeToSelf((View) child.getParent(), coord); |
| // We need to account for the scale of the child itself, as the above only accounts for |
| // for the scale in parents. |
| scale *= childScale; |
| int toX = Math.round(coord[0]); |
| int toY = Math.round(coord[1]); |
| float toScale = scale; |
| if (child instanceof TextView) { |
| TextView tv = (TextView) child; |
| // Account for the source scale of the icon (ie. from AllApps to Workspace, in which |
| // the workspace may have smaller icon bounds). |
| toScale = scale / dragView.getIntrinsicIconScaleFactor(); |
| |
| // The child may be scaled (always about the center of the view) so to account for it, |
| // we have to offset the position by the scaled size. Once we do that, we can center |
| // the drag view about the scaled child view. |
| toY += Math.round(toScale * tv.getPaddingTop()); |
| toY -= dragView.getMeasuredHeight() * (1 - toScale) / 2; |
| if (dragView.getDragVisualizeOffset() != null) { |
| toY -= Math.round(toScale * dragView.getDragVisualizeOffset().y); |
| } |
| |
| toX -= (dragView.getMeasuredWidth() - Math.round(scale * child.getMeasuredWidth())) / 2; |
| } else if (child instanceof FolderIcon) { |
| // Account for holographic blur padding on the drag view |
| toY += Math.round(scale * (child.getPaddingTop() - dragView.getDragRegionTop())); |
| toY -= scale * dragView.getBlurSizeOutline() / 2; |
| toY -= (1 - scale) * dragView.getMeasuredHeight() / 2; |
| // Center in the x coordinate about the target's drawable |
| toX -= (dragView.getMeasuredWidth() - Math.round(scale * child.getMeasuredWidth())) / 2; |
| } else { |
| toY -= (Math.round(scale * (dragView.getHeight() - child.getMeasuredHeight()))) / 2; |
| toX -= (Math.round(scale * (dragView.getMeasuredWidth() |
| - child.getMeasuredWidth()))) / 2; |
| } |
| |
| final int fromX = r.left; |
| final int fromY = r.top; |
| child.setVisibility(INVISIBLE); |
| Runnable onCompleteRunnable = () -> child.setVisibility(VISIBLE); |
| animateViewIntoPosition(dragView, fromX, fromY, toX, toY, 1, 1, 1, toScale, toScale, |
| onCompleteRunnable, ANIMATION_END_DISAPPEAR, duration, anchorView); |
| } |
| |
| public void animateViewIntoPosition(final DragView view, final int fromX, final int fromY, |
| final int toX, final int toY, float finalAlpha, float initScaleX, float initScaleY, |
| float finalScaleX, float finalScaleY, Runnable onCompleteRunnable, |
| int animationEndStyle, int duration, View anchorView) { |
| Rect from = new Rect(fromX, fromY, fromX + |
| view.getMeasuredWidth(), fromY + view.getMeasuredHeight()); |
| Rect to = new Rect(toX, toY, toX + view.getMeasuredWidth(), toY + view.getMeasuredHeight()); |
| animateView(view, from, to, finalAlpha, initScaleX, initScaleY, finalScaleX, finalScaleY, duration, |
| null, null, onCompleteRunnable, animationEndStyle, anchorView); |
| } |
| |
| /** |
| * This method animates a view at the end of a drag and drop animation. |
| * |
| * @param view The view to be animated. This view is drawn directly into DragLayer, and so |
| * doesn't need to be a child of DragLayer. |
| * @param from The initial location of the view. Only the left and top parameters are used. |
| * @param to The final location of the view. Only the left and top parameters are used. This |
| * location doesn't account for scaling, and so should be centered about the desired |
| * final location (including scaling). |
| * @param finalAlpha The final alpha of the view, in case we want it to fade as it animates. |
| * @param finalScaleX The final scale of the view. The view is scaled about its center. |
| * @param finalScaleY The final scale of the view. The view is scaled about its center. |
| * @param duration The duration of the animation. |
| * @param motionInterpolator The interpolator to use for the location of the view. |
| * @param alphaInterpolator The interpolator to use for the alpha of the view. |
| * @param onCompleteRunnable Optional runnable to run on animation completion. |
| * @param animationEndStyle Whether or not to fade out the view once the animation completes. |
| * {@link #ANIMATION_END_DISAPPEAR} or {@link #ANIMATION_END_REMAIN_VISIBLE}. |
| * @param anchorView If not null, this represents the view which the animated view stays |
| * anchored to in case scrolling is currently taking place. Note: currently this is |
| * only used for the X dimension for the case of the workspace. |
| */ |
| public void animateView(final DragView view, final Rect from, final Rect to, |
| final float finalAlpha, final float initScaleX, final float initScaleY, |
| final float finalScaleX, final float finalScaleY, int duration, |
| final Interpolator motionInterpolator, final Interpolator alphaInterpolator, |
| final Runnable onCompleteRunnable, final int animationEndStyle, View anchorView) { |
| |
| // Calculate the duration of the animation based on the object's distance |
| final float dist = (float) Math.hypot(to.left - from.left, to.top - from.top); |
| final Resources res = getResources(); |
| final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); |
| |
| // If duration < 0, this is a cue to compute the duration based on the distance |
| if (duration < 0) { |
| duration = res.getInteger(R.integer.config_dropAnimMaxDuration); |
| if (dist < maxDist) { |
| duration *= mCubicEaseOutInterpolator.getInterpolation(dist / maxDist); |
| } |
| duration = Math.max(duration, res.getInteger(R.integer.config_dropAnimMinDuration)); |
| } |
| |
| // Fall back to cubic ease out interpolator for the animation if none is specified |
| TimeInterpolator interpolator = null; |
| if (alphaInterpolator == null || motionInterpolator == null) { |
| interpolator = mCubicEaseOutInterpolator; |
| } |
| |
| // Animate the view |
| final float initAlpha = view.getAlpha(); |
| final float dropViewScale = view.getScaleX(); |
| AnimatorUpdateListener updateCb = new AnimatorUpdateListener() { |
| @Override |
| public void onAnimationUpdate(ValueAnimator animation) { |
| final float percent = (Float) animation.getAnimatedValue(); |
| final int width = view.getMeasuredWidth(); |
| final int height = view.getMeasuredHeight(); |
| |
| float alphaPercent = alphaInterpolator == null ? percent : |
| alphaInterpolator.getInterpolation(percent); |
| float motionPercent = motionInterpolator == null ? percent : |
| motionInterpolator.getInterpolation(percent); |
| |
| float initialScaleX = initScaleX * dropViewScale; |
| float initialScaleY = initScaleY * dropViewScale; |
| float scaleX = finalScaleX * percent + initialScaleX * (1 - percent); |
| float scaleY = finalScaleY * percent + initialScaleY * (1 - percent); |
| float alpha = finalAlpha * alphaPercent + initAlpha * (1 - alphaPercent); |
| |
| float fromLeft = from.left + (initialScaleX - 1f) * width / 2; |
| float fromTop = from.top + (initialScaleY - 1f) * height / 2; |
| |
| int x = (int) (fromLeft + Math.round(((to.left - fromLeft) * motionPercent))); |
| int y = (int) (fromTop + Math.round(((to.top - fromTop) * motionPercent))); |
| |
| int anchorAdjust = mAnchorView == null ? 0 : (int) (mAnchorView.getScaleX() * |
| (mAnchorViewInitialScrollX - mAnchorView.getScrollX())); |
| |
| int xPos = x - mDropView.getScrollX() + anchorAdjust; |
| int yPos = y - mDropView.getScrollY(); |
| |
| mDropView.setTranslationX(xPos); |
| mDropView.setTranslationY(yPos); |
| mDropView.setScaleX(scaleX); |
| mDropView.setScaleY(scaleY); |
| mDropView.setAlpha(alpha); |
| } |
| }; |
| animateView(view, updateCb, duration, interpolator, onCompleteRunnable, animationEndStyle, |
| anchorView); |
| } |
| |
| public void animateView(final DragView view, AnimatorUpdateListener updateCb, int duration, |
| TimeInterpolator interpolator, final Runnable onCompleteRunnable, |
| final int animationEndStyle, View anchorView) { |
| // Clean up the previous animations |
| if (mDropAnim != null) mDropAnim.cancel(); |
| |
| // Show the drop view if it was previously hidden |
| mDropView = view; |
| mDropView.cancelAnimation(); |
| mDropView.requestLayout(); |
| |
| // Set the anchor view if the page is scrolling |
| if (anchorView != null) { |
| mAnchorViewInitialScrollX = anchorView.getScrollX(); |
| } |
| mAnchorView = anchorView; |
| |
| // Create and start the animation |
| mDropAnim = new ValueAnimator(); |
| mDropAnim.setInterpolator(interpolator); |
| mDropAnim.setDuration(duration); |
| mDropAnim.setFloatValues(0f, 1f); |
| mDropAnim.addUpdateListener(updateCb); |
| mDropAnim.addListener(new AnimatorListenerAdapter() { |
| public void onAnimationEnd(Animator animation) { |
| if (onCompleteRunnable != null) { |
| onCompleteRunnable.run(); |
| } |
| switch (animationEndStyle) { |
| case ANIMATION_END_DISAPPEAR: |
| clearAnimatedView(); |
| break; |
| case ANIMATION_END_REMAIN_VISIBLE: |
| break; |
| } |
| mDropAnim = null; |
| } |
| }); |
| mDropAnim.start(); |
| } |
| |
| public void clearAnimatedView() { |
| if (mDropAnim != null) { |
| mDropAnim.cancel(); |
| } |
| mDropAnim = null; |
| if (mDropView != null) { |
| mDragController.onDeferredEndDrag(mDropView); |
| } |
| mDropView = null; |
| invalidate(); |
| } |
| |
| public View getAnimatedView() { |
| return mDropView; |
| } |
| |
| @Override |
| public void onViewAdded(View child) { |
| super.onViewAdded(child); |
| updateChildIndices(); |
| UiFactory.onLauncherStateOrFocusChanged(mActivity); |
| } |
| |
| @Override |
| public void onViewRemoved(View child) { |
| super.onViewRemoved(child); |
| updateChildIndices(); |
| UiFactory.onLauncherStateOrFocusChanged(mActivity); |
| } |
| |
| @Override |
| public void bringChildToFront(View child) { |
| super.bringChildToFront(child); |
| updateChildIndices(); |
| } |
| |
| private void updateChildIndices() { |
| mTopViewIndex = -1; |
| int childCount = getChildCount(); |
| for (int i = 0; i < childCount; i++) { |
| if (getChildAt(i) instanceof DragView) { |
| mTopViewIndex = i; |
| } |
| } |
| mChildCountOnLastUpdate = childCount; |
| } |
| |
| @Override |
| protected int getChildDrawingOrder(int childCount, int i) { |
| if (mChildCountOnLastUpdate != childCount) { |
| // between platform versions 17 and 18, behavior for onChildViewRemoved / Added changed. |
| // Pre-18, the child was not added / removed by the time of those callbacks. We need to |
| // force update our representation of things here to avoid crashing on pre-18 devices |
| // in certain instances. |
| updateChildIndices(); |
| } |
| |
| // i represents the current draw iteration |
| if (mTopViewIndex == -1) { |
| // in general we do nothing |
| return i; |
| } else if (i == childCount - 1) { |
| // if we have a top index, we return it when drawing last item (highest z-order) |
| return mTopViewIndex; |
| } else if (i < mTopViewIndex) { |
| return i; |
| } else { |
| // for indexes greater than the top index, we fetch one item above to shift for the |
| // displacement of the top index |
| return i + 1; |
| } |
| } |
| |
| @Override |
| protected void dispatchDraw(Canvas canvas) { |
| // Draw the background below children. |
| mWorkspaceScrim.draw(canvas); |
| mOverviewScrim.updateCurrentScrimmedView(this); |
| mFocusIndicatorHelper.draw(canvas); |
| super.dispatchDraw(canvas); |
| } |
| |
| @Override |
| protected boolean drawChild(Canvas canvas, View child, long drawingTime) { |
| if (child == mOverviewScrim.getScrimmedView()) { |
| mOverviewScrim.draw(canvas); |
| } |
| return super.drawChild(canvas, child, drawingTime); |
| } |
| |
| @Override |
| protected void onSizeChanged(int w, int h, int oldw, int oldh) { |
| super.onSizeChanged(w, h, oldw, oldh); |
| mWorkspaceScrim.setSize(w, h); |
| } |
| |
| @Override |
| public void setInsets(Rect insets) { |
| super.setInsets(insets); |
| mWorkspaceScrim.onInsetsChanged(insets); |
| mOverviewScrim.onInsetsChanged(insets); |
| } |
| |
| public WorkspaceAndHotseatScrim getScrim() { |
| return mWorkspaceScrim; |
| } |
| |
| public OverviewScrim getOverviewScrim() { |
| return mOverviewScrim; |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| RotationMode rotation = mActivity.getRotationMode(); |
| int count = getChildCount(); |
| |
| if (!rotation.isTransposed |
| || getMode(widthMeasureSpec) != EXACTLY |
| || getMode(heightMeasureSpec) != EXACTLY) { |
| |
| for (int i = 0; i < count; i++) { |
| final View child = getChildAt(i); |
| child.setRotation(rotation.surfaceRotation); |
| } |
| super.onMeasure(widthMeasureSpec, heightMeasureSpec); |
| } else { |
| |
| for (int i = 0; i < count; i++) { |
| final View child = getChildAt(i); |
| if (child.getVisibility() == GONE) { |
| continue; |
| } |
| if (!(child instanceof Transposable)) { |
| measureChildWithMargins(child, widthMeasureSpec, 0, heightMeasureSpec, 0); |
| } else { |
| measureChildWithMargins(child, heightMeasureSpec, 0, widthMeasureSpec, 0); |
| |
| child.setPivotX(child.getMeasuredWidth() / 2); |
| child.setPivotY(child.getMeasuredHeight() / 2); |
| child.setRotation(rotation.surfaceRotation); |
| } |
| } |
| setMeasuredDimension(getSize(widthMeasureSpec), getSize(heightMeasureSpec)); |
| } |
| } |
| |
| @Override |
| protected void onLayout(boolean changed, int left, int top, int right, int bottom) { |
| RotationMode rotation = mActivity.getRotationMode(); |
| if (!rotation.isTransposed) { |
| super.onLayout(changed, left, top, right, bottom); |
| return; |
| } |
| |
| final int count = getChildCount(); |
| |
| final int parentWidth = right - left; |
| final int parentHeight = bottom - top; |
| |
| for (int i = 0; i < count; i++) { |
| final View child = getChildAt(i); |
| if (child.getVisibility() == GONE) { |
| continue; |
| } |
| |
| final FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) child.getLayoutParams(); |
| |
| if (lp instanceof LayoutParams) { |
| final LayoutParams dlp = (LayoutParams) lp; |
| if (dlp.customPosition) { |
| child.layout(dlp.x, dlp.y, dlp.x + dlp.width, dlp.y + dlp.height); |
| continue; |
| } |
| } |
| |
| final int width = child.getMeasuredWidth(); |
| final int height = child.getMeasuredHeight(); |
| |
| int childLeft; |
| int childTop; |
| |
| int gravity = lp.gravity; |
| if (gravity == -1) { |
| gravity = Gravity.TOP | Gravity.START; |
| } |
| |
| final int layoutDirection = getLayoutDirection(); |
| |
| int absoluteGravity = Gravity.getAbsoluteGravity(gravity, layoutDirection); |
| |
| if (child instanceof Transposable) { |
| absoluteGravity = rotation.toNaturalGravity(absoluteGravity); |
| |
| switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) { |
| case Gravity.CENTER_HORIZONTAL: |
| childTop = (parentHeight - height) / 2 + |
| lp.topMargin - lp.bottomMargin; |
| break; |
| case Gravity.RIGHT: |
| childTop = width / 2 + lp.rightMargin - height / 2; |
| break; |
| case Gravity.LEFT: |
| default: |
| childTop = parentHeight - lp.leftMargin - width / 2 - height / 2; |
| } |
| |
| switch (absoluteGravity & Gravity.VERTICAL_GRAVITY_MASK) { |
| case Gravity.CENTER_VERTICAL: |
| childLeft = (parentWidth - width) / 2 + |
| lp.leftMargin - lp.rightMargin; |
| break; |
| case Gravity.BOTTOM: |
| childLeft = parentWidth - width / 2 - height / 2 - lp.bottomMargin; |
| break; |
| case Gravity.TOP: |
| default: |
| childLeft = height / 2 - width / 2 + lp.topMargin; |
| } |
| } else { |
| switch (absoluteGravity & Gravity.HORIZONTAL_GRAVITY_MASK) { |
| case Gravity.CENTER_HORIZONTAL: |
| childLeft = (parentWidth - width) / 2 + |
| lp.leftMargin - lp.rightMargin; |
| break; |
| case Gravity.RIGHT: |
| childLeft = parentWidth - width - lp.rightMargin; |
| break; |
| case Gravity.LEFT: |
| default: |
| childLeft = lp.leftMargin; |
| } |
| |
| switch (absoluteGravity & Gravity.VERTICAL_GRAVITY_MASK) { |
| case Gravity.TOP: |
| childTop = lp.topMargin; |
| break; |
| case Gravity.CENTER_VERTICAL: |
| childTop = (parentHeight - height) / 2 + |
| lp.topMargin - lp.bottomMargin; |
| break; |
| case Gravity.BOTTOM: |
| childTop = parentHeight - height - lp.bottomMargin; |
| break; |
| default: |
| childTop = lp.topMargin; |
| } |
| } |
| |
| child.layout(childLeft, childTop, childLeft + width, childTop + height); |
| } |
| } |
| } |
