Allow custom density setting

Use system property persist.sys.lcd_density to set custom density.  The
custom setting affects the entire UI.  It is independent of
ro.sf.lcd_density and has no effect on play store compatibility.

Code distilled from PA project via PAC project.

Change-Id: I8d26405d5d33bdf2890a0e9f67f113a4dc3e763b

1 files changed, 3 insertions, 1 deletions

diff --git a/core/java/android/content/res/Resources.java b/core/java/android/content/res/Resources.java
index f6a966b..77d3295 100644
--- a/core/java/android/content/res/Resources.java
+++ b/core/java/android/content/res/Resources.java
@@ -286,6 +286,7 @@ public class Resources {
             CompatibilityInfo compatInfo) {
         mAssets = assets;
         mMetrics.setToDefaults();
+        mMetrics.updateDensity();
         if (compatInfo != null) {
             mCompatibilityInfo = compatInfo;
         }
@@ -2123,6 +2124,7 @@ public class Resources {
             if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) {
                 mMetrics.densityDpi = mConfiguration.densityDpi;
                 mMetrics.density = mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE;
+                mMetrics.updateDensity();
             }
             mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale;
 
@@ -2552,7 +2554,7 @@ public class Resources {
             }
             sPreloaded = true;
             mPreloading = true;
-            sPreloadedDensity = DisplayMetrics.DENSITY_DEVICE;
+            sPreloadedDensity = DisplayMetrics.getDeviceDensity();
             mConfiguration.densityDpi = sPreloadedDensity;
             updateConfiguration(null, null);
         }