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Commit 0076e67d authored by Sunny Goyal's avatar Sunny Goyal
Browse files

Showing the caret/drag handle in transposed layout 

> Adding a simple touch-down effect, without capturing the motion event

Bug: 79526736
Change-Id: I50dcc76836765d158dfdcef2886b190a85707ff2
parent 7c86a1ad

src/com/android/launcher3/views/ScrimView.java

+76 −8
Original line number Original line Diff line number Diff line
@@ -18,14 +18,24 @@ package com.android.launcher3.views; 
import static android.content.Context.ACCESSIBILITY_SERVICE;

import static android.content.Context.ACCESSIBILITY_SERVICE;

import static android.support.v4.graphics.ColorUtils.compositeColors;

import static android.support.v4.graphics.ColorUtils.compositeColors;

import static android.support.v4.graphics.ColorUtils.setAlphaComponent;

import static android.support.v4.graphics.ColorUtils.setAlphaComponent;

import static android.view.MotionEvent.ACTION_DOWN;





import static com.android.launcher3.LauncherState.ALL_APPS;

import static com.android.launcher3.LauncherState.ALL_APPS;

import static com.android.launcher3.LauncherState.NORMAL;

import static com.android.launcher3.LauncherState.NORMAL;



import static com.android.launcher3.anim.Interpolators.ACCEL;

import static com.android.launcher3.anim.Interpolators.DEACCEL;



import android.animation.Animator;

import android.animation.AnimatorListenerAdapter;

import android.animation.Keyframe;

import android.animation.ObjectAnimator;

import android.animation.PropertyValuesHolder;

import android.animation.RectEvaluator;

import android.content.Context;

import android.content.Context;

import android.graphics.Canvas;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Color;

import android.graphics.Rect;

import android.graphics.Rect;

import android.graphics.RectF;

import android.graphics.drawable.Drawable;

import android.graphics.drawable.Drawable;

import android.os.Bundle;

import android.os.Bundle;

import android.support.annotation.Nullable;

import android.support.annotation.Nullable;
@@ -85,6 +95,8 @@ public class ScrimView extends View implements Insettable, OnChangeListener, 




    protected final int mDragHandleSize;

    protected final int mDragHandleSize;

    private final Rect mDragHandleBounds;

    private final Rect mDragHandleBounds;

    private final RectF mHitRect = new RectF();



    private final AccessibilityHelper mAccessibilityHelper;

    private final AccessibilityHelper mAccessibilityHelper;

    @Nullable

    @Nullable

    protected Drawable mDragHandle;

    protected Drawable mDragHandle;
@@ -110,6 +122,7 @@ public class ScrimView extends View implements Insettable, OnChangeListener, 
    @Override

    @Override

    public void setInsets(Rect insets) {

    public void setInsets(Rect insets) {

        updateDragHandleBounds();

        updateDragHandleBounds();

        updateDragHandleVisibility(null);

    }

    }





    @Override

    @Override
@@ -179,6 +192,46 @@ public class ScrimView extends View implements Insettable, OnChangeListener, 
        }

        }

    }

    }





    @Override

    public boolean onTouchEvent(MotionEvent event) {

        boolean value = super.onTouchEvent(event);

        if (!value && mDragHandle != null && event.getAction() == ACTION_DOWN

                && mDragHandle.getAlpha() == 255

                && mHitRect.contains(event.getX(), event.getY())) {



            final Drawable drawable = mDragHandle;

            mDragHandle = null;

            drawable.setBounds(mDragHandleBounds);



            Rect topBounds = new Rect(mDragHandleBounds);

            topBounds.offset(0, -mDragHandleBounds.height() / 2);



            Rect invalidateRegion = new Rect(mDragHandleBounds);

            invalidateRegion.top = topBounds.top;



            Keyframe frameTop = Keyframe.ofObject(0.6f, topBounds);

            frameTop.setInterpolator(DEACCEL);

            Keyframe frameBot = Keyframe.ofObject(1, mDragHandleBounds);

            frameBot.setInterpolator(ACCEL);

            PropertyValuesHolder holder = PropertyValuesHolder .ofKeyframe("bounds",

                    Keyframe.ofObject(0, mDragHandleBounds), frameTop, frameBot);

            holder.setEvaluator(new RectEvaluator());



            ObjectAnimator anim = ObjectAnimator.ofPropertyValuesHolder(drawable, holder);

            anim.addListener(new AnimatorListenerAdapter() {

                @Override

                public void onAnimationEnd(Animator animation) {

                    getOverlay().remove(drawable);

                    updateDragHandleVisibility(drawable);

                }

            });

            anim.addUpdateListener((v) -> invalidate(invalidateRegion));

            getOverlay().add(drawable);

            anim.start();

        }

        return value;

    }



    protected void updateDragHandleBounds() {

    protected void updateDragHandleBounds() {

        DeviceProfile grid = mLauncher.getDeviceProfile();

        DeviceProfile grid = mLauncher.getDeviceProfile();

        final int left;

        final int left;
@@ -198,6 +251,9 @@ public class ScrimView extends View implements Insettable, OnChangeListener, 
            topMargin = grid.hotseatBarSizePx;

            topMargin = grid.hotseatBarSizePx;

        }

        }

        mDragHandleBounds.offsetTo(left, top - topMargin);

        mDragHandleBounds.offsetTo(left, top - topMargin);

        mHitRect.set(mDragHandleBounds);

        float inset = -mDragHandleSize / 2;

        mHitRect.inset(inset, inset);





        if (mDragHandle != null) {

        if (mDragHandle != null) {

            mDragHandle.setBounds(mDragHandleBounds);

            mDragHandle.setBounds(mDragHandleBounds);
@@ -210,11 +266,22 @@ public class ScrimView extends View implements Insettable, OnChangeListener, 
        stateManager.removeStateListener(this);

        stateManager.removeStateListener(this);





        if (enabled) {

        if (enabled) {

            mDragHandle = mLauncher.getDrawable(R.drawable.drag_handle_indicator);

            mDragHandle.setBounds(mDragHandleBounds);



            stateManager.addStateListener(this);

            stateManager.addStateListener(this);

            onStateSetImmediately(mLauncher.getStateManager().getState());

            onStateSetImmediately(mLauncher.getStateManager().getState());

        } else {

            setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS);

        }

        updateDragHandleVisibility(null);

    }



    private void updateDragHandleVisibility(Drawable recycle) {

        boolean visible = mLauncher.getDeviceProfile().isVerticalBarLayout() || mAM.isEnabled();

        boolean wasVisible = mDragHandle != null;

        if (visible != wasVisible) {

            if (visible) {

                mDragHandle = recycle != null ? recycle :

                        mLauncher.getDrawable(R.drawable.drag_handle_indicator);

                mDragHandle.setBounds(mDragHandleBounds);





                updateDragHandleAlpha();

                updateDragHandleAlpha();

            } else {

            } else {
@@ -222,6 +289,7 @@ public class ScrimView extends View implements Insettable, OnChangeListener, 
            }

            }

            invalidate();

            invalidate();

        }

        }

    }





    @Override

    @Override

    public boolean dispatchHoverEvent(MotionEvent event) {

    public boolean dispatchHoverEvent(MotionEvent event) {