ScreenShapeHelper.java revision a0938021718867edd267d4905f3c17ef2944aa65 
1package com.android.internal.util;
2
3import android.content.res.Resources;
4import android.content.res.TypedArray;
5import android.os.Build;
6import android.os.SystemProperties;
7import android.util.DisplayMetrics;
8import android.util.TypedValue;
9import android.view.ViewRootImpl;
10
11import com.android.internal.R;
12
13/**
14 * @hide
15 */
16public class ScreenShapeHelper {
17    private static final boolean IS_EMULATOR = Build.HARDWARE.contains("goldfish");
18
19    /**
20     * Return the bottom pixel window outset of a window given its style attributes.
21     * @param displayMetrics Display metrics of the current device
22     * @param windowStyle Window style attributes for the window.
23     * @return An outset dimension in pixels or 0 if no outset should be applied.
24     */
25    public static int getWindowOutsetBottomPx(DisplayMetrics displayMetrics,
26            TypedArray windowStyle) {
27        if (IS_EMULATOR) {
28            return SystemProperties.getInt(ViewRootImpl.PROPERTY_EMULATOR_WIN_OUTSET_BOTTOM_PX, 0);
29        } else if (windowStyle.hasValue(R.styleable.Window_windowOutsetBottom)) {
30            TypedValue outsetBottom = new TypedValue();
31            windowStyle.getValue(R.styleable.Window_windowOutsetBottom, outsetBottom);
32            return (int) outsetBottom.getDimension(displayMetrics);
33        }
34        return 0;
35    }
36
37    /**
38     * Get whether a device has has a round screen.
39     */
40    public static boolean getWindowIsRound(Resources resources) {
41        if (IS_EMULATOR) {
42            return SystemProperties.getBoolean(ViewRootImpl.PROPERTY_EMULATOR_CIRCULAR, false);
43        } else {
44            return resources.getBoolean(
45                    com.android.internal.R.bool.config_windowIsRound);
46        }
47    }
48}
49