[clutter/wip/evdev-tablet-support: 3/4] evdev: Implement ClutterInputDevice::update_from_tool

[Carlos Garnacho <carlosg src gnome org>]

commit db6271aa1b035f52aa449b318f62a0d00215ad07
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Feb 4 17:20:58 2015 +0100

    evdev: Implement ClutterInputDevice::update_from_tool
    
    This vfunc pokes the libinput_tool in order to find out the currently
    available axes, and updates the device as such.

 clutter/evdev/clutter-input-device-evdev.c |   46 ++++++++++++++++++++++++++++
 1 files changed, 46 insertions(+), 0 deletions(-)
---
diff --git a/clutter/evdev/clutter-input-device-evdev.c b/clutter/evdev/clutter-input-device-evdev.c
index 56c2b09..a7837c3 100644
--- a/clutter/evdev/clutter-input-device-evdev.c
+++ b/clutter/evdev/clutter-input-device-evdev.c
@@ -30,6 +30,7 @@
 #include "clutter/clutter-device-manager-private.h"
 #include "clutter-private.h"
 #include "clutter-evdev.h"
+#include "clutter-input-device-tool-evdev.h"
 
 #include "clutter-input-device-evdev.h"
 
@@ -78,12 +79,57 @@ clutter_input_device_evdev_keycode_to_evdev (ClutterInputDevice *device,
 }
 
 static void
+clutter_input_device_evdev_update_from_tool (ClutterInputDevice     *device,
+                                             ClutterInputDeviceTool *tool)
+{
+  ClutterInputDeviceToolEvdev *evdev_tool;
+  guint axis;
+
+  evdev_tool = CLUTTER_INPUT_DEVICE_TOOL_EVDEV (tool);
+
+  g_object_freeze_notify (G_OBJECT (device));
+
+  _clutter_input_device_reset_axes (device);
+
+  for (axis = LIBINPUT_TABLET_TOOL_AXIS_X; axis <= LIBINPUT_TABLET_TOOL_AXIS_TILT_Y; axis++)
+    {
+      if (!tool || !libinput_tablet_tool_has_axis (evdev_tool->tool, axis))
+        continue;
+
+      switch (axis)
+        {
+        case LIBINPUT_TABLET_TOOL_AXIS_X:
+          _clutter_input_device_add_axis (device, CLUTTER_INPUT_AXIS_X, 0, 0, 0);
+          break;
+        case LIBINPUT_TABLET_TOOL_AXIS_Y:
+          _clutter_input_device_add_axis (device, CLUTTER_INPUT_AXIS_Y, 0, 0, 0);
+          break;
+        case LIBINPUT_TABLET_TOOL_AXIS_DISTANCE:
+          _clutter_input_device_add_axis (device, CLUTTER_INPUT_AXIS_DISTANCE, 0, 1, 0);
+          break;
+        case LIBINPUT_TABLET_TOOL_AXIS_PRESSURE:
+          _clutter_input_device_add_axis (device, CLUTTER_INPUT_AXIS_PRESSURE, 0, 1, 0);
+          break;
+        case LIBINPUT_TABLET_TOOL_AXIS_TILT_X:
+          _clutter_input_device_add_axis (device, CLUTTER_INPUT_AXIS_XTILT, -1, 1, 0);
+          break;
+        case LIBINPUT_TABLET_TOOL_AXIS_TILT_Y:
+          _clutter_input_device_add_axis (device, CLUTTER_INPUT_AXIS_YTILT, -1, 1, 0);
+          break;
+        }
+    }
+
+  g_object_thaw_notify (G_OBJECT (device));
+}
+
+static void
 clutter_input_device_evdev_class_init (ClutterInputDeviceEvdevClass *klass)
 {
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 
   object_class->finalize = clutter_input_device_evdev_finalize;
   klass->keycode_to_evdev = clutter_input_device_evdev_keycode_to_evdev;
+  klass->update_from_tool = clutter_input_device_evdev_update_from_tool;
 }
 
 static void