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Tweak wallpaper restore rejection threshold

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Raise the height ratio threshold slightly in order to start accepting
restores of height=1920 images onto height=2560 devices.

Bug 17882661

Change-Id: I63b47817fdf754cda9a052bddb62aee764522c6f
This commit is contained in:
Christopher Tate
2014-10-10 10:49:16 -07:00
committed by Christopher Tate
parent 294297df4e
commit 1133e29f22
1 changed files with 12 additions and 2 deletions
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14
core/java/android/app/backup/WallpaperBackupHelper.java
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@@ -44,6 +44,16 @@ public class WallpaperBackupHelper extends FileBackupHelperBase implements Backu
// device's preferred wallpaper image dimensions.
private static final boolean REJECT_OUTSIZED_RESTORE = true;
// When outsized restore rejection is enabled, this is the maximum ratio between the
// source and target image heights that will be permitted. The ratio is checked both
// ways (i.e. >= MAX, or <= 1/MAX) to validate restores from both largeer-than-target
// and smaller-than-target sources.
private static final double MAX_HEIGHT_RATIO = 1.35;
// The height ratio check when applying larger images on smaller screens is separate;
// in current policy we accept any such restore regardless of the relative dimensions.
private static final double MIN_HEIGHT_RATIO = 0;
// This path must match what the WallpaperManagerService uses
// TODO: Will need to change if backing up non-primary user's wallpaper
public static final String WALLPAPER_IMAGE =
@@ -142,8 +152,8 @@ public class WallpaperBackupHelper extends FileBackupHelperBase implements Backu
// letterboxing.
final double heightRatio = mDesiredMinHeight / options.outHeight;
if (options.outWidth < mDesiredMinWidth
|| heightRatio <= 0
|| heightRatio >= 1.33) {
|| heightRatio >= MAX_HEIGHT_RATIO
|| heightRatio <= MIN_HEIGHT_RATIO) {
// Not wide enough for the screen, or too short/tall to be a good fit
// for the height of the screen, broken image file, or the system's
// desires for wallpaper size are in a bad state. Probably one of the