Add configuration for maximum UI width.
This changelist adds config_maxUiWidth, a new system resource
configuration which specifies the maximum width the user interface
can operate in. If the physical or specified width is greater than
this value, dimensions and density are scaled down accordingly. The
native mode resolution can be still discovered through
Display.Mode#getPhysicalWidth/getPhysicalHeight.
Test: Defined override for development device and verified values.
Test: bit FrameworksServicesTests:com.android.server.wm.DisplayContentTests#testMaxUiWidth
Change-Id: I12e7ad52f2aa8014e143bc7e80b020c9b24ed9c8
Fixes: 25820708
diff --git a/services/tests/servicestests/src/com/android/server/wm/DisplayContentTests.java b/services/tests/servicestests/src/com/android/server/wm/DisplayContentTests.java
index dd94a21..1729cee 100644
--- a/services/tests/servicestests/src/com/android/server/wm/DisplayContentTests.java
+++ b/services/tests/servicestests/src/com/android/server/wm/DisplayContentTests.java
@@ -254,6 +254,48 @@
assertEquals(window1, sWm.mRoot.computeFocusedWindow());
}
+ /**
+ * This tests setting the maximum ui width on a display.
+ */
+ @Test
+ public void testMaxUiWidth() throws Exception {
+ final int baseWidth = 1440;
+ final int baseHeight = 2560;
+ final int baseDensity = 300;
+
+ sDisplayContent.updateBaseDisplayMetrics(baseWidth, baseHeight, baseDensity);
+
+ final int maxWidth = 300;
+ final int resultingHeight = (maxWidth * baseHeight) / baseWidth;
+ final int resultingDensity = (maxWidth * baseDensity) / baseWidth;
+
+ sDisplayContent.setMaxUiWidth(maxWidth);
+ verifySizes(sDisplayContent, maxWidth, resultingHeight, resultingDensity);
+
+ // Assert setting values again does not change;
+ sDisplayContent.updateBaseDisplayMetrics(baseWidth, baseHeight, baseDensity);
+ verifySizes(sDisplayContent, maxWidth, resultingHeight, resultingDensity);
+
+ final int smallerWidth = 200;
+ final int smallerHeight = 400;
+ final int smallerDensity = 100;
+
+ // Specify smaller dimension, verify that it is honored
+ sDisplayContent.updateBaseDisplayMetrics(smallerWidth, smallerHeight, smallerDensity);
+ verifySizes(sDisplayContent, smallerWidth, smallerHeight, smallerDensity);
+
+ // Verify that setting the max width to a greater value than the base width has no effect
+ sDisplayContent.setMaxUiWidth(maxWidth);
+ verifySizes(sDisplayContent, smallerWidth, smallerHeight, smallerDensity);
+ }
+
+ private static void verifySizes(DisplayContent displayContent, int expectedBaseWidth,
+ int expectedBaseHeight, int expectedBaseDensity) {
+ assertEquals(displayContent.mBaseDisplayWidth, expectedBaseWidth);
+ assertEquals(displayContent.mBaseDisplayHeight, expectedBaseHeight);
+ assertEquals(displayContent.mBaseDisplayDensity, expectedBaseDensity);
+ }
+
private void assertForAllWindowsOrder(List<WindowState> expectedWindows) {
final LinkedList<WindowState> actualWindows = new LinkedList();