From fee206f2419a0ffa90abf4f9f3f9e0b6d0b74906 Mon Sep 17 00:00:00 2001 From: Winson Date: Wed, 19 Aug 2015 17:26:21 -0700 Subject: Adding graphic for all apps empty search screen. Change-Id: I976a327a5984790c458b0f36d33c0b1ac16ec59c --- .../allapps/AllAppsBackgroundDrawable.java | 194 +++++++++++++++++++++ .../launcher3/allapps/AllAppsContainerView.java | 3 +- .../launcher3/allapps/AllAppsGridAdapter.java | 11 +- .../launcher3/allapps/AllAppsRecyclerView.java | 70 ++++++++ 4 files changed, 274 insertions(+), 4 deletions(-) create mode 100644 src/com/android/launcher3/allapps/AllAppsBackgroundDrawable.java (limited to 'src/com/android') diff --git a/src/com/android/launcher3/allapps/AllAppsBackgroundDrawable.java b/src/com/android/launcher3/allapps/AllAppsBackgroundDrawable.java new file mode 100644 index 000000000..117aca921 --- /dev/null +++ b/src/com/android/launcher3/allapps/AllAppsBackgroundDrawable.java @@ -0,0 +1,194 @@ +/* + * Copyright (C) 2015 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.allapps; + +import android.animation.ObjectAnimator; +import android.content.Context; +import android.content.res.Resources; +import android.graphics.Canvas; +import android.graphics.ColorFilter; +import android.graphics.PixelFormat; +import android.graphics.Rect; +import android.graphics.drawable.Drawable; + +import android.view.Gravity; +import com.android.launcher3.R; + +/** + * A helper class to positon and orient a drawable to be drawn. + */ +class TransformedImageDrawable { + private Drawable mImage; + private float mXPercent; + private float mYPercent; + private int mGravity; + + /** + * @param gravity If one of the Gravity center values, the x and y offset will take the width + * and height of the image into account to center the image to the offset. + */ + public TransformedImageDrawable(Resources res, int resourceId, float xPct, float yPct, + int gravity) { + mImage = res.getDrawable(resourceId); + mXPercent = xPct; + mYPercent = yPct; + mGravity = gravity; + } + + public void setAlpha(int alpha) { + mImage.setAlpha(alpha); + } + + public int getAlpha() { + return mImage.getAlpha(); + } + + public void updateBounds(Rect bounds) { + int width = mImage.getIntrinsicWidth(); + int height = mImage.getIntrinsicHeight(); + int left = bounds.left + (int) (mXPercent * bounds.width()); + int top = bounds.top + (int) (mYPercent * bounds.height()); + if ((mGravity & Gravity.CENTER_HORIZONTAL) == Gravity.CENTER_HORIZONTAL) { + left -= (width / 2); + } + if ((mGravity & Gravity.CENTER_VERTICAL) == Gravity.CENTER_VERTICAL) { + top -= (height / 2); + } + mImage.setBounds(left, top, left + width, top + height); + } + + public void draw(Canvas canvas) { + int c = canvas.save(Canvas.MATRIX_SAVE_FLAG); + mImage.draw(canvas); + canvas.restoreToCount(c); + } +} + +/** + * This is a custom composite drawable that has a fixed virtual size and dynamically lays out its + * children images relatively within its bounds. This way, we can reduce the memory usage of a + * single, large sparsely populated image. + */ +public class AllAppsBackgroundDrawable extends Drawable { + + private final TransformedImageDrawable mHand; + private final TransformedImageDrawable[] mIcons; + private final int mWidth; + private final int mHeight; + + private ObjectAnimator mBackgroundAnim; + + public AllAppsBackgroundDrawable(Context context) { + Resources res = context.getResources(); + mHand = new TransformedImageDrawable(res, R.drawable.ic_all_apps_bg_hand, + 0.575f, 0.1f, Gravity.CENTER_HORIZONTAL); + mIcons = new TransformedImageDrawable[4]; + mIcons[0] = new TransformedImageDrawable(res, R.drawable.ic_all_apps_bg_icon_1, + 0.375f, 0, Gravity.CENTER_HORIZONTAL); + mIcons[1] = new TransformedImageDrawable(res, R.drawable.ic_all_apps_bg_icon_2, + 0.3125f, 0.25f, Gravity.CENTER_HORIZONTAL); + mIcons[2] = new TransformedImageDrawable(res, R.drawable.ic_all_apps_bg_icon_3, + 0.475f, 0.4f, Gravity.CENTER_HORIZONTAL); + mIcons[3] = new TransformedImageDrawable(res, R.drawable.ic_all_apps_bg_icon_4, + 0.7f, 0.125f, Gravity.CENTER_HORIZONTAL); + mWidth = res.getDimensionPixelSize(R.dimen.all_apps_background_canvas_width); + mHeight = res.getDimensionPixelSize(R.dimen.all_apps_background_canvas_height); + } + + /** + * Animates the background alpha. + */ + public void animateBgAlpha(float finalAlpha, int duration) { + int finalAlphaI = (int) (finalAlpha * 255f); + if (getAlpha() != finalAlphaI) { + mBackgroundAnim = cancelAnimator(mBackgroundAnim); + mBackgroundAnim = ObjectAnimator.ofInt(this, "alpha", finalAlphaI); + mBackgroundAnim.setDuration(duration); + mBackgroundAnim.start(); + } + } + + /** + * Sets the background alpha immediately. + */ + public void setBgAlpha(float finalAlpha) { + int finalAlphaI = (int) (finalAlpha * 255f); + if (getAlpha() != finalAlphaI) { + mBackgroundAnim = cancelAnimator(mBackgroundAnim); + setAlpha(finalAlphaI); + } + } + + @Override + public int getIntrinsicWidth() { + return mWidth; + } + + @Override + public int getIntrinsicHeight() { + return mHeight; + } + + @Override + public void draw(Canvas canvas) { + mHand.draw(canvas); + for (int i = 0; i < mIcons.length; i++) { + mIcons[i].draw(canvas); + } + } + + @Override + protected void onBoundsChange(Rect bounds) { + super.onBoundsChange(bounds); + mHand.updateBounds(bounds); + for (int i = 0; i < mIcons.length; i++) { + mIcons[i].updateBounds(bounds); + } + invalidateSelf(); + } + + @Override + public void setAlpha(int alpha) { + mHand.setAlpha(alpha); + for (int i = 0; i < mIcons.length; i++) { + mIcons[i].setAlpha(alpha); + } + invalidateSelf(); + } + + @Override + public int getAlpha() { + return mHand.getAlpha(); + } + + @Override + public void setColorFilter(ColorFilter colorFilter) { + // Do nothing + } + + @Override + public int getOpacity() { + return PixelFormat.TRANSLUCENT; + } + + private ObjectAnimator cancelAnimator(ObjectAnimator animator) { + if (animator != null) { + animator.removeAllListeners(); + animator.cancel(); + } + return null; + } +} diff --git a/src/com/android/launcher3/allapps/AllAppsContainerView.java b/src/com/android/launcher3/allapps/AllAppsContainerView.java index 6d008ab98..88c6acada 100644 --- a/src/com/android/launcher3/allapps/AllAppsContainerView.java +++ b/src/com/android/launcher3/allapps/AllAppsContainerView.java @@ -615,13 +615,14 @@ public class AllAppsContainerView extends BaseContainerView implements DragSourc if (apps != null) { mApps.setOrderedFilter(apps); mAdapter.setLastSearchQuery(query); - mAppsRecyclerView.scrollToTop(); + mAppsRecyclerView.onSearchResultsChanged(); } } @Override public void clearSearchResult() { mApps.setOrderedFilter(null); + mAppsRecyclerView.onSearchResultsChanged(); // Clear the search query mSearchQueryBuilder.clear(); diff --git a/src/com/android/launcher3/allapps/AllAppsGridAdapter.java b/src/com/android/launcher3/allapps/AllAppsGridAdapter.java index f7c4489be..1f95133d4 100644 --- a/src/com/android/launcher3/allapps/AllAppsGridAdapter.java +++ b/src/com/android/launcher3/allapps/AllAppsGridAdapter.java @@ -24,11 +24,13 @@ import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.PointF; import android.graphics.Rect; +import android.graphics.drawable.Drawable; import android.support.v4.view.accessibility.AccessibilityRecordCompat; import android.support.v4.view.accessibility.AccessibilityEventCompat; import android.net.Uri; import android.support.v7.widget.GridLayoutManager; import android.support.v7.widget.RecyclerView; +import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.ViewConfiguration; @@ -511,14 +513,17 @@ public class AllAppsGridAdapter extends RecyclerView.Adapter 0) { + c.clipRect(mBackgroundPadding.left, mBackgroundPadding.top, + getWidth() - mBackgroundPadding.right, + getHeight() - mBackgroundPadding.bottom); + + mEmptySearchBackground.draw(c); + } + + super.onDraw(c); + } + + @Override + protected boolean verifyDrawable(Drawable who) { + return who == mEmptySearchBackground || super.verifyDrawable(who); + } + + @Override + protected void onSizeChanged(int w, int h, int oldw, int oldh) { + updateEmptySearchBackgroundBounds(); + } + @Override protected void onFinishInflate() { super.onFinishInflate(); @@ -137,6 +172,25 @@ public class AllAppsRecyclerView extends BaseRecyclerView } } + public void onSearchResultsChanged() { + // Always scroll the view to the top so the user can see the changed results + scrollToTop(); + + if (mApps.hasNoFilteredResults()) { + if (mEmptySearchBackground == null) { + mEmptySearchBackground = new AllAppsBackgroundDrawable(getContext()); + mEmptySearchBackground.setAlpha(0); + mEmptySearchBackground.setCallback(this); + updateEmptySearchBackgroundBounds(); + } + mEmptySearchBackground.animateBgAlpha(1f, 150); + } else if (mEmptySearchBackground != null) { + // For the time being, we just immediately hide the background to ensure that it does + // not overlap with the results + mEmptySearchBackground.setBgAlpha(0f); + } + } + /** * Maps the touch (from 0..1) to the adapter position that should be visible. */ @@ -386,4 +440,20 @@ public class AllAppsRecyclerView extends BaseRecyclerView return 0; } } + + /** + * Updates the bounds of the empty search background. + */ + private void updateEmptySearchBackgroundBounds() { + if (mEmptySearchBackground == null) { + return; + } + + // Center the empty search background on this new view bounds + int x = (getMeasuredWidth() - mEmptySearchBackground.getIntrinsicWidth()) / 2; + int y = mEmptySearchBackgroundTopOffset; + mEmptySearchBackground.setBounds(x, y, + x + mEmptySearchBackground.getIntrinsicWidth(), + y + mEmptySearchBackground.getIntrinsicHeight()); + } } -- cgit v1.2.3