| /* |
| * Copyright (C) 2018 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.quickstep.views; |
| |
| import static com.android.launcher3.LauncherState.ALL_APPS_HEADER_EXTRA; |
| import static com.android.launcher3.LauncherState.BACKGROUND_APP; |
| import static com.android.launcher3.LauncherState.OVERVIEW; |
| import static com.android.launcher3.anim.Interpolators.ACCEL; |
| import static com.android.launcher3.anim.Interpolators.ACCEL_2; |
| import static com.android.launcher3.anim.Interpolators.LINEAR; |
| import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound; |
| |
| import android.content.Context; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.Paint; |
| import android.graphics.Path; |
| import android.graphics.Path.Direction; |
| import android.graphics.Path.Op; |
| import android.graphics.Rect; |
| import android.util.AttributeSet; |
| import android.view.animation.Interpolator; |
| |
| import com.android.launcher3.DeviceProfile; |
| import com.android.launcher3.R; |
| import com.android.launcher3.Utilities; |
| import com.android.launcher3.anim.Interpolators; |
| import com.android.launcher3.uioverrides.states.OverviewState; |
| import com.android.launcher3.util.Themes; |
| import com.android.launcher3.views.ScrimView; |
| import com.android.quickstep.SysUINavigationMode; |
| import com.android.quickstep.SysUINavigationMode.Mode; |
| import com.android.quickstep.SysUINavigationMode.NavigationModeChangeListener; |
| |
| /** |
| * Scrim used for all-apps and shelf in Overview |
| * In transposed layout, it behaves as a simple color scrim. |
| * In portrait layout, it draws a rounded rect such that |
| * From normal state to overview state, the shelf just fades in and does not move |
| * From overview state to all-apps state the shelf moves up and fades in to cover the screen |
| */ |
| public class ShelfScrimView extends ScrimView implements NavigationModeChangeListener { |
| |
| // If the progress is more than this, shelf follows the finger, otherwise it moves faster to |
| // cover the whole screen |
| private static final float SCRIM_CATCHUP_THRESHOLD = 0.2f; |
| |
| // Temporarily needed until android.R.attr.bottomDialogCornerRadius becomes public |
| private static final float BOTTOM_CORNER_RADIUS_RATIO = 2f; |
| |
| // In transposed layout, we simply draw a flat color. |
| private boolean mDrawingFlatColor; |
| |
| // For shelf mode |
| private final int mEndAlpha; |
| private final float mRadius; |
| private final int mMaxScrimAlpha; |
| private final Paint mPaint; |
| |
| // Mid point where the alpha changes |
| private int mMidAlpha; |
| private float mMidProgress; |
| |
| // The progress at which the drag handle starts moving up with the shelf. |
| private float mDragHandleProgress; |
| |
| private Interpolator mBeforeMidProgressColorInterpolator = ACCEL; |
| private Interpolator mAfterMidProgressColorInterpolator = ACCEL; |
| |
| private float mShiftRange; |
| |
| private final float mShelfOffset; |
| private float mTopOffset; |
| private float mShelfTop; |
| private float mShelfTopAtThreshold; |
| |
| private int mShelfColor; |
| private int mRemainingScreenColor; |
| |
| private final Path mTempPath = new Path(); |
| private final Path mRemainingScreenPath = new Path(); |
| private boolean mRemainingScreenPathValid = false; |
| |
| private Mode mSysUINavigationMode; |
| |
| public ShelfScrimView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| mMaxScrimAlpha = Math.round(OVERVIEW.getOverviewScrimAlpha(mLauncher) * 255); |
| |
| mEndAlpha = Color.alpha(mEndScrim); |
| mRadius = BOTTOM_CORNER_RADIUS_RATIO * Themes.getDialogCornerRadius(context); |
| mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| |
| mShelfOffset = context.getResources().getDimension(R.dimen.shelf_surface_offset); |
| // Just assume the easiest UI for now, until we have the proper layout information. |
| mDrawingFlatColor = true; |
| } |
| |
| @Override |
| protected void onSizeChanged(int w, int h, int oldw, int oldh) { |
| super.onSizeChanged(w, h, oldw, oldh); |
| mRemainingScreenPathValid = false; |
| } |
| |
| @Override |
| protected void onAttachedToWindow() { |
| super.onAttachedToWindow(); |
| onNavigationModeChanged(SysUINavigationMode.INSTANCE.get(getContext()) |
| .addModeChangeListener(this)); |
| } |
| |
| @Override |
| protected void onDetachedFromWindow() { |
| super.onDetachedFromWindow(); |
| SysUINavigationMode.INSTANCE.get(getContext()).removeModeChangeListener(this); |
| } |
| |
| @Override |
| public void onNavigationModeChanged(Mode newMode) { |
| mSysUINavigationMode = newMode; |
| // Note that these interpolators are inverted because progress goes 1 to 0. |
| if (mSysUINavigationMode == Mode.NO_BUTTON) { |
| // Show the shelf more quickly before reaching overview progress. |
| mBeforeMidProgressColorInterpolator = ACCEL_2; |
| mAfterMidProgressColorInterpolator = ACCEL; |
| } else { |
| mBeforeMidProgressColorInterpolator = ACCEL; |
| mAfterMidProgressColorInterpolator = Interpolators.clampToProgress(ACCEL, 0.5f, 1f); |
| } |
| } |
| |
| @Override |
| public void reInitUi() { |
| DeviceProfile dp = mLauncher.getDeviceProfile(); |
| mDrawingFlatColor = dp.isVerticalBarLayout(); |
| |
| if (!mDrawingFlatColor) { |
| mRemainingScreenPathValid = false; |
| mShiftRange = mLauncher.getAllAppsController().getShiftRange(); |
| |
| if ((OVERVIEW.getVisibleElements(mLauncher) & ALL_APPS_HEADER_EXTRA) == 0) { |
| mMidProgress = 1; |
| mDragHandleProgress = 1; |
| mMidAlpha = 0; |
| } else { |
| Context context = getContext(); |
| mMidAlpha = Themes.getAttrInteger(context, R.attr.allAppsInterimScrimAlpha); |
| mMidProgress = OVERVIEW.getVerticalProgress(mLauncher); |
| Rect hotseatPadding = dp.getHotseatLayoutPadding(); |
| int hotseatSize = dp.hotseatBarSizePx + dp.getInsets().bottom |
| - hotseatPadding.bottom - hotseatPadding.top; |
| float dragHandleTop = |
| Math.min(hotseatSize, OverviewState.getDefaultSwipeHeight(context, dp)); |
| mDragHandleProgress = 1 - (dragHandleTop / mShiftRange); |
| } |
| mTopOffset = dp.getInsets().top - mShelfOffset; |
| mShelfTopAtThreshold = mShiftRange * SCRIM_CATCHUP_THRESHOLD + mTopOffset; |
| } |
| updateColors(); |
| updateDragHandleAlpha(); |
| invalidate(); |
| } |
| |
| @Override |
| public void updateColors() { |
| super.updateColors(); |
| if (mDrawingFlatColor) { |
| mDragHandleOffset = 0; |
| return; |
| } |
| |
| mDragHandleOffset = mShelfOffset - mDragHandleSize; |
| if (mProgress >= SCRIM_CATCHUP_THRESHOLD) { |
| mShelfTop = mShiftRange * mProgress + mTopOffset; |
| } else { |
| mShelfTop = Utilities.mapRange(mProgress / SCRIM_CATCHUP_THRESHOLD, -mRadius, |
| mShelfTopAtThreshold); |
| } |
| |
| if (mProgress >= 1) { |
| mRemainingScreenColor = 0; |
| mShelfColor = 0; |
| if (mSysUINavigationMode == Mode.NO_BUTTON |
| && mLauncher.getStateManager().getState() == BACKGROUND_APP) { |
| // Show the shelf background when peeking during swipe up. |
| mShelfColor = setColorAlphaBound(mEndScrim, mMidAlpha); |
| } |
| } else if (mProgress >= mMidProgress) { |
| mRemainingScreenColor = 0; |
| |
| int alpha = Math.round(Utilities.mapToRange( |
| mProgress, mMidProgress, 1, mMidAlpha, 0, mBeforeMidProgressColorInterpolator)); |
| mShelfColor = setColorAlphaBound(mEndScrim, alpha); |
| } else { |
| // Note that these ranges and interpolators are inverted because progress goes 1 to 0. |
| int alpha = Math.round( |
| Utilities.mapToRange(mProgress, (float) 0, mMidProgress, (float) mEndAlpha, |
| (float) mMidAlpha, mAfterMidProgressColorInterpolator)); |
| mShelfColor = setColorAlphaBound(mEndScrim, alpha); |
| |
| int remainingScrimAlpha = Math.round( |
| Utilities.mapToRange(mProgress, (float) 0, mMidProgress, mMaxScrimAlpha, |
| (float) 0, LINEAR)); |
| mRemainingScreenColor = setColorAlphaBound(mScrimColor, remainingScrimAlpha); |
| } |
| |
| if (mProgress < mDragHandleProgress) { |
| mDragHandleOffset += mShiftRange * (mDragHandleProgress - mProgress); |
| } |
| } |
| |
| @Override |
| protected void onDraw(Canvas canvas) { |
| drawBackground(canvas); |
| drawDragHandle(canvas); |
| } |
| |
| private void drawBackground(Canvas canvas) { |
| if (mDrawingFlatColor) { |
| if (mCurrentFlatColor != 0) { |
| canvas.drawColor(mCurrentFlatColor); |
| } |
| return; |
| } |
| |
| if (Color.alpha(mShelfColor) == 0) { |
| return; |
| } else if (mProgress <= 0) { |
| canvas.drawColor(mShelfColor); |
| return; |
| } |
| |
| int height = getHeight(); |
| int width = getWidth(); |
| // Draw the scrim over the remaining screen if needed. |
| if (mRemainingScreenColor != 0) { |
| if (!mRemainingScreenPathValid) { |
| mTempPath.reset(); |
| // Using a arbitrary '+10' in the bottom to avoid any left-overs at the |
| // corners due to rounding issues. |
| mTempPath.addRoundRect(0, height - mRadius, width, height + mRadius + 10, |
| mRadius, mRadius, Direction.CW); |
| mRemainingScreenPath.reset(); |
| mRemainingScreenPath.addRect(0, 0, width, height, Direction.CW); |
| mRemainingScreenPath.op(mTempPath, Op.DIFFERENCE); |
| } |
| |
| float offset = height - mRadius - mShelfTop; |
| canvas.translate(0, -offset); |
| mPaint.setColor(mRemainingScreenColor); |
| canvas.drawPath(mRemainingScreenPath, mPaint); |
| canvas.translate(0, offset); |
| } |
| |
| mPaint.setColor(mShelfColor); |
| canvas.drawRoundRect(0, mShelfTop, width, height + mRadius, mRadius, mRadius, mPaint); |
| } |
| } |