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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 android.view;
import android.graphics.Insets;
import android.graphics.Rect;
import android.os.Parcel;
import android.os.Parcelable;
import android.view.InsetsState.InternalInsetType;
import java.io.PrintWriter;
/**
* Represents the state of a single window generating insets for clients.
* @hide
*/
public class InsetsSource implements Parcelable {
private final @InternalInsetType int mType;
/** Frame of the source in screen coordinate space */
private final Rect mFrame;
private boolean mVisible;
private final Rect mTmpFrame = new Rect();
public InsetsSource(@InternalInsetType int type) {
mType = type;
mFrame = new Rect();
}
public InsetsSource(InsetsSource other) {
mType = other.mType;
mFrame = new Rect(other.mFrame);
mVisible = other.mVisible;
}
public void setFrame(Rect frame) {
mFrame.set(frame);
}
public void setVisible(boolean visible) {
mVisible = visible;
}
public @InternalInsetType int getType() {
return mType;
}
public Rect getFrame() {
return mFrame;
}
public boolean isVisible() {
return mVisible;
}
/**
* Calculates the insets this source will cause to a client window.
*
* @param relativeFrame The frame to calculate the insets relative to.
* @param ignoreVisibility If true, always reports back insets even if source isn't visible.
* @return The resulting insets. The contract is that only one side will be occupied by a
* source.
*/
public Insets calculateInsets(Rect relativeFrame, boolean ignoreVisibility) {
if (!ignoreVisibility && !mVisible) {
return Insets.NONE;
}
if (!mTmpFrame.setIntersect(mFrame, relativeFrame)) {
return Insets.NONE;
}
// Intersecting at top/bottom
if (mTmpFrame.width() == relativeFrame.width()) {
if (mTmpFrame.top == relativeFrame.top) {
return Insets.of(0, mTmpFrame.height(), 0, 0);
} else {
return Insets.of(0, 0, 0, mTmpFrame.height());
}
}
// Intersecting at left/right
else if (mTmpFrame.height() == relativeFrame.height()) {
if (mTmpFrame.left == relativeFrame.left) {
return Insets.of(mTmpFrame.width(), 0, 0, 0);
} else {
return Insets.of(0, 0, mTmpFrame.width(), 0);
}
} else {
return Insets.NONE;
}
}
public void dump(String prefix, PrintWriter pw) {
pw.print(prefix);
pw.print("InsetsSource type="); pw.print(InsetsState.typeToString(mType));
pw.print(" frame="); pw.print(mFrame.toShortString());
pw.print(" visible="); pw.print(mVisible);
pw.println();
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
InsetsSource that = (InsetsSource) o;
if (mType != that.mType) return false;
if (mVisible != that.mVisible) return false;
return mFrame.equals(that.mFrame);
}
@Override
public int hashCode() {
int result = mType;
result = 31 * result + mFrame.hashCode();
result = 31 * result + (mVisible ? 1 : 0);
return result;
}
public InsetsSource(Parcel in) {
mType = in.readInt();
mFrame = in.readParcelable(null /* loader */);
mVisible = in.readBoolean();
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(mType);
dest.writeParcelable(mFrame, 0 /* flags*/);
dest.writeBoolean(mVisible);
}
public static final @android.annotation.NonNull Creator<InsetsSource> CREATOR = new Creator<InsetsSource>() {
public InsetsSource createFromParcel(Parcel in) {
return new InsetsSource(in);
}
public InsetsSource[] newArray(int size) {
return new InsetsSource[size];
}
};
}
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