tools: add a tablet debugging tool

Nothing sophisticated but easier to debug certain tablet oddities.
It shows a bar for each axis on the tablet (and the evdev axis) and prints
that relative to the axis range. This makes it easy to check if we do hit the
full range (especially for distance/pressure/tilt) and whether that matches
with what the device gives us.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

meson.build

@@ -495,6 +495,20 @@ configure_file(input : 'tools/libinput-debug-events.man',
 	       install_dir : dir_man1,
 	       )
 
+libinput_debug_tablet_sources = [ 'tools/libinput-debug-tablet.c' ]
+executable('libinput-debug-tablet',
+	   libinput_debug_tablet_sources,
+	   dependencies : deps_tools,
+	   include_directories : [includes_src, includes_include],
+	   install_dir : libinput_tool_path,
+	   install : true)
+
+configure_file(input : 'tools/libinput-debug-tablet.man',
+	       output : 'libinput-debug-tablet.1',
+	       configuration : man_config,
+	       install_dir : dir_man1,
+	       )
+
 libinput_quirks_sources = [ 'tools/libinput-quirks.c' ]
 libinput_quirks = executable('libinput-quirks',
 			     libinput_quirks_sources,

src/util-macros.h

@@ -49,4 +49,11 @@
 #define ANSI_BRIGHT_CYAN	"\x1B[0;36;1m"
 #define ANSI_NORMAL		"\x1B[0m"
 
+
+#define ANSI_UP			"\x1B[%dA"
+#define ANSI_DOWN		"\x1B[%dB"
+#define ANSI_RIGHT		"\x1B[%dC"
+#define ANSI_LEFT		"\x1B[%dD"
+
+
 #define CASE_RETURN_STRING(a) case a: return #a