commit 39d4aa5bb18a14680347f6f6d1a34eed918e274b
author Riddle Hsu <riddlehsu@google.com> Fri Nov 30 20:46:53 2018 +0800
committer Riddle Hsu <riddlehsu@google.com> Fri Nov 30 12:49:00 2018 +0000
tree 40d06173e8d45207ad57cf3fae1c4d72bd8f4c8e
parent 75cc36e4924601444c75b24a59fac117ead00ee2

Fix empty region if the scale is smaller than 1

It may be used by Layer of SurfaceFlinger to calculate
touchable region. It should be able to scale a window
to a smaller size.

Bug: 111440400
Test: manual - An input-associated surface with a scaling
      matrix that has dsdx, dsdy < 1. Use "dumpsys input"
      to observe its touchable region.

Change-Id: I495bd16acec77f913fd39dcac90404eddc71cabb

services/inputflinger/InputDispatcher.cpp

diff --git a/services/inputflinger/InputDispatcher.cpp b/services/inputflinger/InputDispatcher.cpp
index bea4f91..0e258c8 100644
--- a/services/inputflinger/InputDispatcher.cpp
+++ b/services/inputflinger/InputDispatcher.cpp
@@ -3518,7 +3518,7 @@
                     dump += StringPrintf(INDENT3 "%zu: name='%s', displayId=%d, "
                             "paused=%s, hasFocus=%s, hasWallpaper=%s, "
                             "visible=%s, canReceiveKeys=%s, flags=0x%08x, type=0x%08x, layer=%d, "
-                            "frame=[%d,%d][%d,%d], globalScale=%f, windowScale=%f,%f"
+                            "frame=[%d,%d][%d,%d], globalScale=%f, windowScale=(%f,%f), "
                             "touchableRegion=",
                             i, windowInfo->name.c_str(), windowInfo->displayId,
                             toString(windowInfo->paused),