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/*
* Copyright (C) 2012 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.content.res.CompatibilityInfo;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.DisplayMetrics;
/**
* Describes the characteristics of a particular logical display.
* @hide
*/
public final class DisplayInfo implements Parcelable {
/**
* The width of the portion of the display that is available to applications, in pixels.
* Represents the size of the display minus any system decorations.
*/
public int appWidth;
/**
* The height of the portion of the display that is available to applications, in pixels.
* Represents the size of the display minus any system decorations.
*/
public int appHeight;
/**
* The smallest value of {@link #appWidth} that an application is likely to encounter,
* in pixels, excepting cases where the width may be even smaller due to the presence
* of a soft keyboard, for example.
*/
public int smallestNominalAppWidth;
/**
* The smallest value of {@link #appHeight} that an application is likely to encounter,
* in pixels, excepting cases where the height may be even smaller due to the presence
* of a soft keyboard, for example.
*/
public int smallestNominalAppHeight;
/**
* The largest value of {@link #appWidth} that an application is likely to encounter,
* in pixels, excepting cases where the width may be even larger due to system decorations
* such as the status bar being hidden, for example.
*/
public int largestNominalAppWidth;
/**
* The largest value of {@link #appHeight} that an application is likely to encounter,
* in pixels, excepting cases where the height may be even larger due to system decorations
* such as the status bar being hidden, for example.
*/
public int largestNominalAppHeight;
/**
* The logical width of the display, in pixels.
* Represents the usable size of the display which may be smaller than the
* physical size when the system is emulating a smaller display.
*/
public int logicalWidth;
/**
* The logical height of the display, in pixels.
* Represents the usable size of the display which may be smaller than the
* physical size when the system is emulating a smaller display.
*/
public int logicalHeight;
/**
* The rotation of the display relative to its natural orientation.
* May be one of {@link android.view.Surface#ROTATION_0},
* {@link android.view.Surface#ROTATION_90}, {@link android.view.Surface#ROTATION_180},
* {@link android.view.Surface#ROTATION_270}.
* <p>
* The value of this field is indeterminate if the logical display is presented on
* more than one physical display.
* </p>
*/
public int rotation;
/**
* The refresh rate of this display in frames per second.
* <p>
* The value of this field is indeterminate if the logical display is presented on
* more than one physical display.
* </p>
*/
public float refreshRate;
/**
* The logical display density which is the basis for density-independent
* pixels.
*/
public int logicalDensityDpi;
/**
* The exact physical pixels per inch of the screen in the X dimension.
* <p>
* The value of this field is indeterminate if the logical display is presented on
* more than one physical display.
* </p>
*/
public float physicalXDpi;
/**
* The exact physical pixels per inch of the screen in the Y dimension.
* <p>
* The value of this field is indeterminate if the logical display is presented on
* more than one physical display.
* </p>
*/
public float physicalYDpi;
public static final Creator<DisplayInfo> CREATOR = new Creator<DisplayInfo>() {
public DisplayInfo createFromParcel(Parcel source) {
return new DisplayInfo(source);
}
public DisplayInfo[] newArray(int size) {
return new DisplayInfo[size];
}
};
public DisplayInfo() {
}
public DisplayInfo(DisplayInfo other) {
copyFrom(other);
}
private DisplayInfo(Parcel source) {
readFromParcel(source);
}
@Override
public int describeContents() {
return 0;
}
public void copyFrom(DisplayInfo other) {
appWidth = other.appWidth;
appHeight = other.appHeight;
smallestNominalAppWidth = other.smallestNominalAppWidth;
smallestNominalAppHeight = other.smallestNominalAppHeight;
largestNominalAppWidth = other.largestNominalAppWidth;
largestNominalAppHeight = other.largestNominalAppHeight;
logicalWidth = other.logicalWidth;
logicalHeight = other.logicalHeight;
rotation = other.rotation;
refreshRate = other.refreshRate;
logicalDensityDpi = other.logicalDensityDpi;
physicalXDpi = other.physicalXDpi;
physicalYDpi = other.physicalYDpi;
}
public void readFromParcel(Parcel source) {
appWidth = source.readInt();
appHeight = source.readInt();
smallestNominalAppWidth = source.readInt();
smallestNominalAppHeight = source.readInt();
largestNominalAppWidth = source.readInt();
largestNominalAppHeight = source.readInt();
logicalWidth = source.readInt();
logicalHeight = source.readInt();
rotation = source.readInt();
refreshRate = source.readFloat();
logicalDensityDpi = source.readInt();
physicalXDpi = source.readFloat();
physicalYDpi = source.readFloat();
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(appWidth);
dest.writeInt(appHeight);
dest.writeInt(smallestNominalAppWidth);
dest.writeInt(smallestNominalAppHeight);
dest.writeInt(largestNominalAppWidth);
dest.writeInt(largestNominalAppHeight);
dest.writeInt(logicalWidth);
dest.writeInt(logicalHeight);
dest.writeInt(rotation);
dest.writeFloat(refreshRate);
dest.writeInt(logicalDensityDpi);
dest.writeFloat(physicalXDpi);
dest.writeFloat(physicalYDpi);
}
public void getAppMetrics(DisplayMetrics outMetrics, CompatibilityInfoHolder cih) {
getMetricsWithSize(outMetrics, cih, appWidth, appHeight);
}
public void getLogicalMetrics(DisplayMetrics outMetrics, CompatibilityInfoHolder cih) {
getMetricsWithSize(outMetrics, cih, logicalWidth, logicalHeight);
}
private void getMetricsWithSize(DisplayMetrics outMetrics, CompatibilityInfoHolder cih,
int width, int height) {
outMetrics.densityDpi = outMetrics.noncompatDensityDpi = logicalDensityDpi;
outMetrics.noncompatWidthPixels = outMetrics.widthPixels = width;
outMetrics.noncompatHeightPixels = outMetrics.heightPixels = height;
outMetrics.density = outMetrics.noncompatDensity =
logicalDensityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE;
outMetrics.scaledDensity = outMetrics.noncompatScaledDensity = outMetrics.density;
outMetrics.xdpi = outMetrics.noncompatXdpi = physicalXDpi;
outMetrics.ydpi = outMetrics.noncompatYdpi = physicalYDpi;
if (cih != null) {
CompatibilityInfo ci = cih.getIfNeeded();
if (ci != null) {
ci.applyToDisplayMetrics(outMetrics);
}
}
}
// For debugging purposes
@Override
public String toString() {
return "app " + appWidth + " x " + appHeight
+ ", real " + logicalWidth + " x " + logicalHeight
+ ", largest app " + largestNominalAppWidth + " x " + largestNominalAppHeight
+ ", smallest app " + smallestNominalAppWidth + " x " + smallestNominalAppHeight
+ ", " + refreshRate + " fps"
+ ", rotation " + rotation
+ ", density " + logicalDensityDpi
+ ", " + physicalXDpi + " x " + physicalYDpi + " dpi";
}
}
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