Sunny Goyal
927447e71d
> Converting the scrim to View, to better avoid overdraw > Overview and Spring loaded state have different scrim alpha > When going from overview to all-apps, there is a color scrim drawn over the overview panel. The slef color is merged with this color to prevent overdraw, and the remaining screen is drawn with a cut-out round rect path Bug: 79111591 Change-Id: I26801fde13dd6adb4b06110bbe8087e35cc31847
112 lines
3.4 KiB
Java
112 lines
3.4 KiB
Java
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3.views;
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import static android.support.v4.graphics.ColorUtils.compositeColors;
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import static android.support.v4.graphics.ColorUtils.setAlphaComponent;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Color;
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import android.graphics.Rect;
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import android.util.AttributeSet;
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import android.view.View;
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import com.android.launcher3.Insettable;
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import com.android.launcher3.R;
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import com.android.launcher3.uioverrides.WallpaperColorInfo;
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import com.android.launcher3.uioverrides.WallpaperColorInfo.OnChangeListener;
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import com.android.launcher3.util.Themes;
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/**
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* Simple scrim which draws a flat color
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*/
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public class ScrimView extends View implements Insettable, OnChangeListener {
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private final WallpaperColorInfo mWallpaperColorInfo;
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protected final int mEndScrim;
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protected float mMaxScrimAlpha;
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protected float mProgress = 1;
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protected int mScrimColor;
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protected int mCurrentFlatColor;
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protected int mEndFlatColor;
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protected int mEndFlatColorAlpha;
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public ScrimView(Context context, AttributeSet attrs) {
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super(context, attrs);
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mWallpaperColorInfo = WallpaperColorInfo.getInstance(context);
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mEndScrim = Themes.getAttrColor(context, R.attr.allAppsScrimColor);
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mMaxScrimAlpha = 0.7f;
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}
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@Override
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public void setInsets(Rect insets) { }
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@Override
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protected void onAttachedToWindow() {
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super.onAttachedToWindow();
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mWallpaperColorInfo.addOnChangeListener(this);
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onExtractedColorsChanged(mWallpaperColorInfo);
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}
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@Override
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protected void onDetachedFromWindow() {
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super.onDetachedFromWindow();
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mWallpaperColorInfo.removeOnChangeListener(this);
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}
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@Override
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public boolean hasOverlappingRendering() {
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return false;
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}
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@Override
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public void onExtractedColorsChanged(WallpaperColorInfo wallpaperColorInfo) {
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mScrimColor = wallpaperColorInfo.getMainColor();
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mEndFlatColor = compositeColors(mEndScrim, setAlphaComponent(
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mScrimColor, Math.round(mMaxScrimAlpha * 255)));
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mEndFlatColorAlpha = Color.alpha(mEndFlatColor);
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updateColors();
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invalidate();
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}
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public void setProgress(float progress) {
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if (mProgress != progress) {
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mProgress = progress;
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updateColors();
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invalidate();
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}
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}
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public void reInitUi() { }
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protected void updateColors() {
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mCurrentFlatColor = mProgress >= 1 ? 0 : setAlphaComponent(
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mEndFlatColor, Math.round((1 - mProgress) * mEndFlatColorAlpha));
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}
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@Override
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protected void onDraw(Canvas canvas) {
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if (mCurrentFlatColor != 0) {
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canvas.drawColor(mCurrentFlatColor);
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}
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}
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}
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