Add touch_frame events to Weston 1.5.0

Otherwise no Qt applications react on touch. This issue was
eventually resolved upstream by dropping the built-in evdev backend
and relying on libinput exclusively, where it is fixed. The libinput
backend is required since Weston 1.7. In 1.6 the libinput backend
was made the default, but the old backend was still there. Thus this
fix also applies to Weston 1.6.

Task-number: QTEE-831
Change-Id: Ib089136723b7b1dc6f760b5eedb12d7b8a50abbc
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>

1 files changed, 65 insertions, 0 deletions

diff --git a/recipes/wayland/weston/0001-Adapt-changes-made-in-libinput-src-evdev.c-for-touch.patch b/recipes/wayland/weston/0001-Adapt-changes-made-in-libinput-src-evdev.c-for-touch.patch
new file mode 100644
index 0000000..1bb9253
--- /dev/null
+++ b/recipes/wayland/weston/0001-Adapt-changes-made-in-libinput-src-evdev.c-for-touch.patch
@@ -0,0 +1,65 @@
+From c4633014fff25d32926129a8b028124c6338bb2b Mon Sep 17 00:00:00 2001
+From: Louai Al-Khanji <louai.al-khanji@theqtcompany.com>
+Date: Wed, 19 Aug 2015 09:04:46 +0300
+Subject: [PATCH 1/1] Adapt changes made in libinput/src/evdev.c for touch
+ frame emission.
+
+---
+ src/evdev.c | 27 +++++++++++++++++++++++++++
+ 1 file changed, 27 insertions(+)
+
+diff --git a/src/evdev.c b/src/evdev.c
+index 888dfbd..daa5d72 100644
+--- a/src/evdev.c
++++ b/src/evdev.c
+@@ -359,12 +359,36 @@ evdev_process_absolute(struct evdev_device *device,
+        }
+ }
+ 
++static inline int
++evdev_need_touch_frame(struct evdev_device *device)
++{
++       if (!(device->seat_caps & EVDEV_SEAT_TOUCH))
++               return 0;
++
++       switch (device->pending_event) {
++       case EVDEV_NONE:
++       case EVDEV_RELATIVE_MOTION:
++               break;
++       case EVDEV_ABSOLUTE_MT_DOWN:
++       case EVDEV_ABSOLUTE_MT_MOTION:
++       case EVDEV_ABSOLUTE_MT_UP:
++       case EVDEV_ABSOLUTE_TOUCH_DOWN:
++       case EVDEV_ABSOLUTE_TOUCH_UP:
++       case EVDEV_ABSOLUTE_MOTION:
++               return 1;
++       }
++
++       return 0;
++}
++
+ static void
+ fallback_process(struct evdev_dispatch *dispatch,
+                 struct evdev_device *device,
+                 struct input_event *event,
+                 uint32_t time)
+ {
++       int need_frame = 0;
++
+        switch (event->type) {
+        case EV_REL:
+                evdev_process_relative(device, event, time);
+@@ -376,7 +400,10 @@ fallback_process(struct evdev_dispatch *dispatch,
+                evdev_process_key(device, event, time);
+                break;
+        case EV_SYN:
++               need_frame = evdev_need_touch_frame(device);
+                evdev_flush_pending_event(device, time);
++               if (need_frame)
++                       notify_touch_frame(device->seat);
+                break;
+        }
+ }
+-- 
+2.1.4
+