[PATCH] Xi: define a default range of axis labels.

[Peter Hutterer]

ATM, we are able to announce that a device has multiple axes, but clients have
to take educated guesses as to wether axis N is tilt, pressure, pan or
bananas. This patch introduces a set of default properties, initialized by the
server on init. Drivers can then take the AXIS_LABEL_PROP and fill it with the
matching labels to indicate to the client which axis does what. Clients can
query this property and adjust their user interface accordingly.

The range of labels is taken from linux/input.h, presumably that's the ones at
least the Linux kernel can give us for a device.

Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
---
 Xi/xiproperty.c              |   39 ++++++++++++++++++++++++++++++++-
 include/xserver-properties.h |   49 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 87 insertions(+), 1 deletions(-)

diff --git a/Xi/xiproperty.c b/Xi/xiproperty.c
index 53b2f6a..3bc2818 100644
--- a/Xi/xiproperty.c
+++ b/Xi/xiproperty.c
@@ -54,7 +54,44 @@ static struct dev_properties
     {0, ACCEL_PROP_PROFILE_NUMBER},
     {0, ACCEL_PROP_CONSTANT_DECELERATION},
     {0, ACCEL_PROP_ADAPTIVE_DECELERATION},
-    {0, ACCEL_PROP_VELOCITY_SCALING}
+    {0, ACCEL_PROP_VELOCITY_SCALING},
+    {0, AXIS_LABEL_PROP},
+    {0, AXIS_LABEL_PROP_REL_X},
+    {0, AXIS_LABEL_PROP_REL_Y},
+    {0, AXIS_LABEL_PROP_REL_Z},
+    {0, AXIS_LABEL_PROP_REL_RX},
+    {0, AXIS_LABEL_PROP_REL_RY},
+    {0, AXIS_LABEL_PROP_REL_RZ},
+    {0, AXIS_LABEL_PROP_REL_HWHEEL},
+    {0, AXIS_LABEL_PROP_REL_DIAL},
+    {0, AXIS_LABEL_PROP_REL_WHEEL},
+    {0, AXIS_LABEL_PROP_REL_MISC},
+    {0, AXIS_LABEL_PROP_ABS_X},
+    {0, AXIS_LABEL_PROP_ABS_Y},
+    {0, AXIS_LABEL_PROP_ABS_Z},
+    {0, AXIS_LABEL_PROP_ABS_RX},
+    {0, AXIS_LABEL_PROP_ABS_RY},
+    {0, AXIS_LABEL_PROP_ABS_RZ},
+    {0, AXIS_LABEL_PROP_ABS_THROTTLE},
+    {0, AXIS_LABEL_PROP_ABS_RUDDER},
+    {0, AXIS_LABEL_PROP_ABS_WHEEL},
+    {0, AXIS_LABEL_PROP_ABS_GAS},
+    {0, AXIS_LABEL_PROP_ABS_BRAKE},
+    {0, AXIS_LABEL_PROP_ABS_HAT0X},
+    {0, AXIS_LABEL_PROP_ABS_HAT0Y},
+    {0, AXIS_LABEL_PROP_ABS_HAT1X},
+    {0, AXIS_LABEL_PROP_ABS_HAT1Y},
+    {0, AXIS_LABEL_PROP_ABS_HAT2X},
+    {0, AXIS_LABEL_PROP_ABS_HAT2Y},
+    {0, AXIS_LABEL_PROP_ABS_HAT3X},
+    {0, AXIS_LABEL_PROP_ABS_HAT3Y},
+    {0, AXIS_LABEL_PROP_ABS_PRESSURE},
+    {0, AXIS_LABEL_PROP_ABS_DISTANCE},
+    {0, AXIS_LABEL_PROP_ABS_TILT_X},
+    {0, AXIS_LABEL_PROP_ABS_TILT_Y},
+    {0, AXIS_LABEL_PROP_ABS_TOOL_WIDTH},
+    {0, AXIS_LABEL_PROP_ABS_VOLUME},
+    {0, AXIS_LABEL_PROP_ABS_MISC}
 };
 
 static long XIPropHandlerID = 1;
diff --git a/include/xserver-properties.h b/include/xserver-properties.h
index 1327e59..1ce37c5 100644
--- a/include/xserver-properties.h
+++ b/include/xserver-properties.h
@@ -43,4 +43,53 @@
 /* FLOAT, format 32 */
 #define ACCEL_PROP_VELOCITY_SCALING "Device Accel Velocity Scaling"
 
+
+/* Axis labels */
+/* ATOM values, ideally one per axis */
+#define AXIS_LABEL_PROP "Axis Labels"
+
+/* The following are for use in AXIS_LABEL_PROP only and do not have a
+ * defined value that is parsed by the server. */
+#define AXIS_LABEL_PROP_REL_X           "Rel X"
+#define AXIS_LABEL_PROP_REL_Y           "Rel Y"
+#define AXIS_LABEL_PROP_REL_Z           "Rel Z"
+#define AXIS_LABEL_PROP_REL_RX          "Rel Rotary X"
+#define AXIS_LABEL_PROP_REL_RY          "Rel Rotary Y"
+#define AXIS_LABEL_PROP_REL_RZ          "Rel Rotary Z"
+#define AXIS_LABEL_PROP_REL_HWHEEL      "Rel Horiz Wheel"
+#define AXIS_LABEL_PROP_REL_DIAL        "Rel Dial"
+#define AXIS_LABEL_PROP_REL_WHEEL       "Rel Vert Wheel"
+#define AXIS_LABEL_PROP_REL_MISC        "Rel Misc"
+
+/*
+ * Absolute axes
+ */
+
+#define AXIS_LABEL_PROP_ABS_X           "Abs X"
+#define AXIS_LABEL_PROP_ABS_Y           "Abs Y"
+#define AXIS_LABEL_PROP_ABS_Z           "Abs Z"
+#define AXIS_LABEL_PROP_ABS_RX          "Abs Rotary X"
+#define AXIS_LABEL_PROP_ABS_RY          "Abs Rotary Y"
+#define AXIS_LABEL_PROP_ABS_RZ          "Abs Rotary Z"
+#define AXIS_LABEL_PROP_ABS_THROTTLE    "Abs Throttle"
+#define AXIS_LABEL_PROP_ABS_RUDDER      "Abs Rudder"
+#define AXIS_LABEL_PROP_ABS_WHEEL       "Abs Wheel"
+#define AXIS_LABEL_PROP_ABS_GAS         "Abs Gas"
+#define AXIS_LABEL_PROP_ABS_BRAKE       "Abs Brake"
+#define AXIS_LABEL_PROP_ABS_HAT0X       "Abs Hat 0 X"
+#define AXIS_LABEL_PROP_ABS_HAT0Y       "Abs Hat 0 Y"
+#define AXIS_LABEL_PROP_ABS_HAT1X       "Abs Hat 1 X"
+#define AXIS_LABEL_PROP_ABS_HAT1Y       "Abs Hat 1 Y"
+#define AXIS_LABEL_PROP_ABS_HAT2X       "Abs Hat 2 X"
+#define AXIS_LABEL_PROP_ABS_HAT2Y       "Abs Hat 2 Y"
+#define AXIS_LABEL_PROP_ABS_HAT3X       "Abs Hat 3 X"
+#define AXIS_LABEL_PROP_ABS_HAT3Y       "Abs Hat 3 Y"
+#define AXIS_LABEL_PROP_ABS_PRESSURE    "Abs Pressure"
+#define AXIS_LABEL_PROP_ABS_DISTANCE    "Abs Distance"
+#define AXIS_LABEL_PROP_ABS_TILT_X      "Abs Tilt X"
+#define AXIS_LABEL_PROP_ABS_TILT_Y      "Abs Tilt Y"
+#define AXIS_LABEL_PROP_ABS_TOOL_WIDTH  "Abs Tool Width"
+#define AXIS_LABEL_PROP_ABS_VOLUME      "Abs Volume"
+#define AXIS_LABEL_PROP_ABS_MISC        "Abs Misc"
+
 #endif
-- 
1.6.0.6