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/*
* 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.systemui.plugins;
import android.graphics.Color;
import android.graphics.Rect;
import android.view.View;
import android.widget.ImageView;
import com.android.systemui.plugins.DarkIconDispatcher.DarkReceiver;
import com.android.systemui.plugins.annotations.DependsOn;
import com.android.systemui.plugins.annotations.ProvidesInterface;
/**
* Dispatches events to {@link DarkReceiver}s about changes in darkness, tint area and dark
* intensity. Accessible through {@link PluginDependency}
*/
@ProvidesInterface(version = DarkIconDispatcher.VERSION)
@DependsOn(target = DarkReceiver.class)
public interface DarkIconDispatcher {
int VERSION = 1;
/**
* Sets the dark area so {@link #applyDark} only affects the icons in the specified area.
*
* @param r the area in which icons should change its tint, in logical screen
* coordinates
*/
void setIconsDarkArea(Rect r);
/**
* Adds a receiver to receive callbacks onDarkChanged
*/
void addDarkReceiver(DarkReceiver receiver);
/**
* Adds a receiver to receive callbacks onDarkChanged
*/
void addDarkReceiver(ImageView imageView);
/**
* Must have been previously been added through one of the addDarkReceive methods above.
*/
void removeDarkReceiver(DarkReceiver object);
/**
* Must have been previously been added through one of the addDarkReceive methods above.
*/
void removeDarkReceiver(ImageView object);
/**
* Used to reapply darkness on an object, must have previously been added through
* addDarkReceiver.
*/
void applyDark(DarkReceiver object);
int DEFAULT_ICON_TINT = Color.WHITE;
Rect sTmpRect = new Rect();
int[] sTmpInt2 = new int[2];
/**
* @return the tint to apply to view depending on the desired tint color and
* the screen tintArea in which to apply that tint
*/
static int getTint(Rect tintArea, View view, int color) {
if (isInArea(tintArea, view)) {
return color;
} else {
return DEFAULT_ICON_TINT;
}
}
/**
* @return the dark intensity to apply to view depending on the desired dark
* intensity and the screen tintArea in which to apply that intensity
*/
static float getDarkIntensity(Rect tintArea, View view, float intensity) {
if (isInArea(tintArea, view)) {
return intensity;
} else {
return 0f;
}
}
/**
* @return true if more than half of the view area are in area, false
* otherwise
*/
static boolean isInArea(Rect area, View view) {
if (area.isEmpty()) {
return true;
}
sTmpRect.set(area);
view.getLocationOnScreen(sTmpInt2);
int left = sTmpInt2[0];
int intersectStart = Math.max(left, area.left);
int intersectEnd = Math.min(left + view.getWidth(), area.right);
int intersectAmount = Math.max(0, intersectEnd - intersectStart);
boolean coversFullStatusBar = area.top <= 0;
boolean majorityOfWidth = 2 * intersectAmount > view.getWidth();
return majorityOfWidth && coversFullStatusBar;
}
/**
* Receives a callback on darkness changes
*/
@ProvidesInterface(version = DarkReceiver.VERSION)
interface DarkReceiver {
int VERSION = 1;
void onDarkChanged(Rect area, float darkIntensity, int tint);
}
}
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