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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 package org.chromium.ui.base; | 5 package org.chromium.ui.base; |
6 | 6 |
7 import android.content.Context; | 7 import android.content.Context; |
8 import android.os.Build; | 8 import android.os.Build; |
9 import android.util.DisplayMetrics; | 9 import android.util.DisplayMetrics; |
10 import android.view.WindowManager; | 10 import android.view.WindowManager; |
11 | 11 |
| 12 import org.chromium.base.ContextUtils; |
12 import org.chromium.base.annotations.CalledByNative; | 13 import org.chromium.base.annotations.CalledByNative; |
13 | 14 |
14 /** | 15 /** |
15 * UI utilities for accessing form factor information. | 16 * UI utilities for accessing form factor information. |
16 */ | 17 */ |
17 public class DeviceFormFactor { | 18 public class DeviceFormFactor { |
18 | 19 |
19 /** | 20 /** |
20 * The minimum width that would classify the device as a tablet or a large t
ablet. | 21 * The minimum width that would classify the device as a tablet or a large t
ablet. |
21 */ | 22 */ |
22 public static final int MINIMUM_TABLET_WIDTH_DP = 600; | 23 public static final int MINIMUM_TABLET_WIDTH_DP = 600; |
23 private static final int MINIMUM_LARGE_TABLET_WIDTH_DP = 720; | 24 private static final int MINIMUM_LARGE_TABLET_WIDTH_DP = 720; |
24 | 25 |
25 private static Boolean sIsTablet; | 26 private static Boolean sIsTablet; |
26 private static Boolean sIsLargeTablet; | 27 private static Boolean sIsLargeTablet; |
27 private static Integer sMinimumTabletWidthPx; | 28 private static Integer sMinimumTabletWidthPx; |
28 private static Float sDensity; | 29 private static Float sDensity; |
29 | 30 |
| 31 /** TODO(wnwen): Remove when downstream is migrated. */ |
| 32 @Deprecated |
| 33 public static boolean isTablet(Context context) { |
| 34 return isTablet(); |
| 35 } |
| 36 |
30 /** | 37 /** |
31 * @param context {@link Context} used to get the Application Context. | |
32 * @return Whether the app should treat the device as a tablet for layout. T
his method is not | 38 * @return Whether the app should treat the device as a tablet for layout. T
his method is not |
33 * affected by Android N multi-window. | 39 * affected by Android N multi-window. |
34 */ | 40 */ |
35 @CalledByNative | 41 @CalledByNative |
36 public static boolean isTablet(Context context) { | 42 public static boolean isTablet() { |
37 if (sIsTablet == null) { | 43 if (sIsTablet == null) { |
38 sIsTablet = getSmallestDeviceWidthDp(context) >= MINIMUM_TABLET_WIDT
H_DP; | 44 sIsTablet = getSmallestDeviceWidthDp() >= MINIMUM_TABLET_WIDTH_DP; |
39 } | 45 } |
40 return sIsTablet; | 46 return sIsTablet; |
41 } | 47 } |
42 | 48 |
43 /** | 49 /** |
44 * @param context {@link Context} used to get the Application Context. | 50 * @param context {@link Context} used to get the Application Context. |
45 * @return True if the app should treat the device as a large (> 720dp) tabl
et for layout. This | 51 * @return True if the app should treat the device as a large (> 720dp) tabl
et for layout. This |
46 * method is not affected by Android N multi-window. | 52 * method is not affected by Android N multi-window. |
47 */ | 53 */ |
48 public static boolean isLargeTablet(Context context) { | 54 public static boolean isLargeTablet(Context context) { |
49 if (sIsLargeTablet == null) { | 55 if (sIsLargeTablet == null) { |
50 sIsLargeTablet = getSmallestDeviceWidthDp(context) >= MINIMUM_LARGE_
TABLET_WIDTH_DP; | 56 sIsLargeTablet = getSmallestDeviceWidthDp() >= MINIMUM_LARGE_TABLET_
WIDTH_DP; |
51 } | 57 } |
52 return sIsLargeTablet; | 58 return sIsLargeTablet; |
53 } | 59 } |
54 | 60 |
55 /** | 61 /** |
56 * Calculates the minimum device width in dp. This method is not affected by
Android N | 62 * Calculates the minimum device width in dp. This method is not affected by
Android N |
57 * multi-window. | 63 * multi-window. |
58 * | 64 * |
59 * @param context {@link Context} used to get the Application Context. | |
60 * @return The smaller of device width and height in dp. | 65 * @return The smaller of device width and height in dp. |
61 */ | 66 */ |
62 public static int getSmallestDeviceWidthDp(Context context) { | 67 public static int getSmallestDeviceWidthDp() { |
63 assert context.getApplicationContext() != null; | |
64 | |
65 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) { | 68 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) { |
66 DisplayMetrics metrics = new DisplayMetrics(); | 69 DisplayMetrics metrics = new DisplayMetrics(); |
67 // The Application Context must be used instead of the regular Conte
xt, because | 70 // The Application Context must be used instead of the regular Conte
xt, because |
68 // in Android N multi-window calling Display.getRealMetrics() using
the regular Context | 71 // in Android N multi-window calling Display.getRealMetrics() using
the regular Context |
69 // returns the size of the current screen rather than the device. | 72 // returns the size of the current screen rather than the device. |
70 ((WindowManager) context.getApplicationContext().getSystemService( | 73 ((WindowManager) ContextUtils.getApplicationContext().getSystemServi
ce( |
71 Context.WINDOW_SERVICE)).getDefaultDisplay().getRealMetrics(
metrics); | 74 Context.WINDOW_SERVICE)) |
| 75 .getDefaultDisplay() |
| 76 .getRealMetrics(metrics); |
72 return Math.round(Math.min(metrics.heightPixels / metrics.density, | 77 return Math.round(Math.min(metrics.heightPixels / metrics.density, |
73 metrics.widthPixels / metrics.density)); | 78 metrics.widthPixels / metrics.density)); |
74 } else { | 79 } else { |
75 // Display.getRealMetrics() is only available in API level 17+, so | 80 // Display.getRealMetrics() is only available in API level 17+, so |
76 // Configuration.smallestScreenWidthDp is used instead. Proir to the
introduction of | 81 // Configuration.smallestScreenWidthDp is used instead. Proir to the
introduction of |
77 // multi-window in Android N, smallestScreenWidthDp was the same as
the minimum size | 82 // multi-window in Android N, smallestScreenWidthDp was the same as
the minimum size |
78 // in getRealMetrics(). | 83 // in getRealMetrics(). |
79 return context.getResources().getConfiguration().smallestScreenWidth
Dp; | 84 return ContextUtils.getApplicationContext() |
| 85 .getResources() |
| 86 .getConfiguration() |
| 87 .smallestScreenWidthDp; |
80 } | 88 } |
81 } | 89 } |
82 | 90 |
83 /** | 91 /** |
84 * @param context {@link Context} used to get the display density. | 92 * @param context {@link Context} used to get the display density. |
85 * @return The minimum width in px at which the device should be treated lik
e a tablet for | 93 * @return The minimum width in px at which the device should be treated lik
e a tablet for |
86 * layout. | 94 * layout. |
87 */ | 95 */ |
88 public static int getMinimumTabletWidthPx(Context context) { | 96 public static int getMinimumTabletWidthPx(Context context) { |
89 if (sMinimumTabletWidthPx == null) { | 97 if (sMinimumTabletWidthPx == null) { |
(...skipping 20 matching lines...) Expand all Loading... |
110 * Sets whether the device is a tablet. | 118 * Sets whether the device is a tablet. |
111 * @param isTablet Whether the app should treat the device as a tablet for l
ayout. | 119 * @param isTablet Whether the app should treat the device as a tablet for l
ayout. |
112 * @param isLargeTablet Whether the app should treat the device as a large t
ablet for layout. | 120 * @param isLargeTablet Whether the app should treat the device as a large t
ablet for layout. |
113 * If this is true, isTablet should also be true. | 121 * If this is true, isTablet should also be true. |
114 */ | 122 */ |
115 public static void setIsTablet(boolean isTablet, boolean isLargeTablet) { | 123 public static void setIsTablet(boolean isTablet, boolean isLargeTablet) { |
116 sIsTablet = isTablet; | 124 sIsTablet = isTablet; |
117 sIsLargeTablet = isLargeTablet; | 125 sIsLargeTablet = isLargeTablet; |
118 } | 126 } |
119 } | 127 } |
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