[PATCH evemu 5/5] Print the device size where applicable

[Peter Hutterer]

Needed often enough, might as well print it

Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
---
 src/evemu.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/src/evemu.c b/src/evemu.c
index 1f4444e..49302fd 100644
--- a/src/evemu.c
+++ b/src/evemu.c
@@ -321,6 +321,28 @@ static void write_desc(const struct evemu_device *dev, FILE *fp)
 	fprintf(fp, "# Input device ID: bus %#04x vendor %#04x product %#04x version %#04x\n",
 		evemu_get_id_bustype(dev), evemu_get_id_vendor(dev),
 		evemu_get_id_product(dev), evemu_get_id_version(dev));
+
+	if (evemu_has_event(dev, EV_ABS, ABS_X) &&
+	    evemu_has_event(dev, EV_ABS, ABS_Y)) {
+		int min, max, res;
+		int w = 0, h = 0;
+
+		min = evemu_get_abs_minimum(dev, ABS_X);
+		max = evemu_get_abs_maximum(dev, ABS_X);
+		res = evemu_get_abs_resolution(dev, ABS_X);
+		if (res != 0)
+			w = (max - min)/res;
+
+		min = evemu_get_abs_minimum(dev, ABS_Y);
+		max = evemu_get_abs_maximum(dev, ABS_Y);
+		res = evemu_get_abs_resolution(dev, ABS_Y);
+		if (res != 0)
+			h = (max - min)/res;
+
+		if (w != 0 && h != 0)
+			fprintf(fp, "# Size in mm: %dx%d\n", w, h);
+	}
+
 	fprintf(fp, "# Supported events:\n");
 	for (i = 0; i < EV_MAX; i++) {
 		if (!evemu_has_bit(dev, i))
-- 
2.9.3