fix: handle non-client area pointer events from pen on Win10 (electron#24104)

trop[bot] · zcbenz · ckerr · web-flow · commit bcd02508661b · 2020-06-16T12:38:36.000-05:00
* fix: handle non client pointer events from pen on Win10

* fix trop oops

* update patches

Co-authored-by: Cheng Zhao &lt;zcbenz@gmail.com&gt;
Co-authored-by: Charles Kerr &lt;charles@charleskerr.com&gt;
diff --git a/patches/chromium/.patches b/patches/chromium/.patches
@@ -125,3 +125,4 @@ fix_hunspell_crash.patch
 introduce_a_mutex_for_the_rendering_loop_in_baseaudiocontext.patch
 fix_default_to_ntlm_v2_in_network_service.patch
 fix_allow_ime_to_insert_zero-length_composition_string.patch
+fix_handling_non_client_pointer_events_from_pen_on_windows_10.patch
diff --git a/patches/chromium/fix_handling_non_client_pointer_events_from_pen_on_windows_10.patch b/patches/chromium/fix_handling_non_client_pointer_events_from_pen_on_windows_10.patch
@@ -0,0 +1,28 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Cheng Zhao <zcbenz@gmail.com>
+Date: Thu, 4 Oct 2018 14:57:02 -0700
+Subject: fix: handle non client pointer events from pen on Windows 10
+
+Refs: https://github.com/electron/electron/issues/21440
+Refs: https://chromium-review.googlesource.com/c/chromium/src/+/2237535
+
+diff --git a/ui/views/win/hwnd_message_handler.cc b/ui/views/win/hwnd_message_handler.cc
+index 0e957831c25ccbb27038b9a24587621a825ec5ee..dd330f71d203f473452455f6c96d0b89074ddc1d 100644
+--- a/ui/views/win/hwnd_message_handler.cc
++++ b/ui/views/win/hwnd_message_handler.cc
+@@ -2052,6 +2052,15 @@ LRESULT HWNDMessageHandler::OnPointerEvent(UINT message,
+     return -1;
+   }
+ 
++  // Pen may also send non client pointer messages, treat them as normal
++  // touch events so they can be properly handled.
++  if (pointer_type == PT_PEN &&
++      (message == WM_NCPOINTERDOWN ||
++       message == WM_NCPOINTERUP ||
++       message == WM_NCPOINTERUPDATE)) {
++    pointer_type = PT_TOUCH;
++  }
++
+   switch (pointer_type) {
+     case PT_PEN:
+       return HandlePointerEventTypePen(message, w_param, l_param);
