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https://github.com/LawnchairLauncher/lawnchair.git
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Updated project directories for unified 'systemUI' folder (#5034)
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John Andrew Camu
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/*
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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.systemui.plugins;
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import android.graphics.Color;
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import android.graphics.Rect;
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import android.view.View;
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import com.android.systemui.plugins.DarkIconDispatcher.DarkReceiver;
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import com.android.systemui.plugins.annotations.DependsOn;
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import com.android.systemui.plugins.annotations.ProvidesInterface;
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import java.util.ArrayList;
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import java.util.Collection;
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/**
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* Dispatches events to {@link DarkReceiver}s about changes in darkness, tint area and dark
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* intensity. Accessible through {@link PluginDependency}
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*/
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@ProvidesInterface(version = DarkIconDispatcher.VERSION)
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@DependsOn(target = DarkReceiver.class)
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public interface DarkIconDispatcher {
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int VERSION = 2;
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/**
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* Sets the dark area so {@link #applyDark} only affects the icons in the specified area.
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*
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* @param r the areas in which icons should change its tint, in logical screen
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* coordinates
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*/
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void setIconsDarkArea(ArrayList<Rect> r);
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/**
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* Adds a receiver to receive callbacks onDarkChanged
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*/
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void addDarkReceiver(DarkReceiver receiver);
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/**
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* Must have been previously been added through one of the addDarkReceive methods above.
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*/
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void removeDarkReceiver(DarkReceiver object);
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/**
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* Used to reapply darkness on an object, must have previously been added through
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* addDarkReceiver.
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*/
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void applyDark(DarkReceiver object);
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/** The default tint (applicable for dark backgrounds) is white */
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int DEFAULT_ICON_TINT = Color.WHITE;
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/** To support an icon which wants to create contrast, the default tint is black-on-white. */
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int DEFAULT_INVERSE_ICON_TINT = Color.BLACK;
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Rect sTmpRect = new Rect();
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int[] sTmpInt2 = new int[2];
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/**
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* @return the tint to apply to view depending on the desired tint color and
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* the screen tintArea in which to apply that tint
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*/
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static int getTint(Collection<Rect> tintAreas, View view, int color) {
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if (isInAreas(tintAreas, view)) {
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return color;
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} else {
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return DEFAULT_ICON_TINT;
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}
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}
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/**
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* @return the tint to apply to a foreground, given that the background is tinted
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* per {@link #getTint}
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*/
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static int getInverseTint(Collection<Rect> tintAreas, View view, int inverseColor) {
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if (isInAreas(tintAreas, view)) {
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return inverseColor;
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} else {
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return DEFAULT_INVERSE_ICON_TINT;
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}
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}
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/**
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* @return true if more than half of the view's area is in any of the given area Rects, false
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* otherwise
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*/
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static boolean isInAreas(Collection<Rect> areas, View view) {
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if (areas.isEmpty()) {
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return true;
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}
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for (Rect area : areas) {
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if (isInArea(area, view)) {
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return true;
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}
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}
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return false;
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}
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/**
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* @return true if more than half of the viewBounds are in any of the given area Rects, false
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* otherwise
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*/
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static boolean isInAreas(Collection<Rect> areas, Rect viewBounds) {
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if (areas.isEmpty()) {
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return true;
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}
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for (Rect area : areas) {
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if (isInArea(area, viewBounds)) {
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return true;
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}
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}
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return false;
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}
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/** @return true if more than half of the viewBounds are in the area Rect, false otherwise */
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static boolean isInArea(Rect area, Rect viewBounds) {
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if (area.isEmpty()) {
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return true;
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}
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sTmpRect.set(area);
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int left = viewBounds.left;
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int width = viewBounds.width();
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int intersectStart = Math.max(left, area.left);
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int intersectEnd = Math.min(left + width, area.right);
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int intersectAmount = Math.max(0, intersectEnd - intersectStart);
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boolean coversFullStatusBar = area.top <= 0;
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boolean majorityOfWidth = 2 * intersectAmount > width;
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return majorityOfWidth && coversFullStatusBar;
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}
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/** @return true if more than half of the view's area is in the area Rect, false otherwise */
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static boolean isInArea(Rect area, View view) {
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if (area.isEmpty()) {
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return true;
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}
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sTmpRect.set(area);
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view.getLocationOnScreen(sTmpInt2);
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int left = sTmpInt2[0];
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int intersectStart = Math.max(left, area.left);
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int intersectEnd = Math.min(left + view.getWidth(), area.right);
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int intersectAmount = Math.max(0, intersectEnd - intersectStart);
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boolean coversFullStatusBar = area.top <= 0;
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boolean majorityOfWidth = 2 * intersectAmount > view.getWidth();
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return majorityOfWidth && coversFullStatusBar;
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}
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/**
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* Receives a callback on darkness changes
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*/
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@ProvidesInterface(version = DarkReceiver.VERSION)
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interface DarkReceiver {
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int VERSION = 3;
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/**
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* @param areas list of regions on screen where the tint applies
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* @param darkIntensity float representing the level of tint. In the range [0,1]
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* @param tint the tint applicable as a foreground contrast to the dark regions. This value
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* is interpolated between a default light and dark tone, and is therefore
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* usable as-is, as long as the view is in one of the areas defined in
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* {@code areas}.
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*
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* @see DarkIconDispatcher#isInArea(Rect, View) for utilizing {@code areas}
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*
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* Note: only one of {@link #onDarkChanged(ArrayList, float, int)} or
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* {@link #onDarkChangedWithContrast(ArrayList, int, int)} need to be implemented, as both
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* will be called in the same circumstances.
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*/
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void onDarkChanged(ArrayList<Rect> areas, float darkIntensity, int tint);
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/**
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* New version of onDarkChanged, which describes a tint plus an optional contrastTint
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* that can be used if the tint is applied to the background of an icon.
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*
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* We use the 2 here to avoid the case where an existing override of onDarkChanged
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* might pass in parameters as bare numbers (e.g. 0 instead of 0f) which might get
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* mistakenly cast to (int) and therefore trigger this method.
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*
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* @param areas list of areas where dark tint applies
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* @param tint int describing the tint color to use
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* @param contrastTint if desired, a contrasting color that can be used for a foreground
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*
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* Note: only one of {@link #onDarkChanged(ArrayList, float, int)} or
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* {@link #onDarkChangedWithContrast(ArrayList, int, int)} need to be implemented, as both
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* will be called in the same circumstances.
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*/
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default void onDarkChangedWithContrast(ArrayList<Rect> areas, int tint, int contrastTint) {}
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}
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}
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