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evdev: simplify setting a fake resolution

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The only two callers passed in the fake resolution anyway, so we don't need
extra parameters here.
We don't allow devices with only x or y resolution set, either both or none.
And we can use libevdev_set_abs_resolution() rather than handling absinfo
structs.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Peter Hutterer 2015-06-30 12:07:16 +10:00
parent 4e39443757
commit 6e8dc031ba
1 changed files with 12 additions and 43 deletions
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55
src/evdev.c
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@ -1551,19 +1551,16 @@ evdev_read_model(struct evdev_device *device)
return m->model;
}
/* Return 1 if the given resolutions have been set, or 0 otherwise */
/* Return 1 if the device is set to the fake resolution or 0 otherwise */
static inline int
evdev_fix_abs_resolution(struct evdev_device *device,
unsigned int xcode,
unsigned int ycode,
int xresolution,
int yresolution)
unsigned int ycode)
{
struct libinput *libinput = device->base.seat->libinput;
struct libevdev *evdev = device->evdev;
const struct input_absinfo *absx, *absy;
struct input_absinfo fixed;
int rc = 0;
int xres = EVDEV_FAKE_RESOLUTION,
yres = EVDEV_FAKE_RESOLUTION;
if (!(xcode == ABS_X && ycode == ABS_Y) &&
!(xcode == ABS_MT_POSITION_X && ycode == ABS_MT_POSITION_Y)) {
@ -1573,37 +1570,15 @@ evdev_fix_abs_resolution(struct evdev_device *device,
return 0;
}
if (xresolution == 0 || yresolution == 0 ||
(xresolution == EVDEV_FAKE_RESOLUTION && xresolution != yresolution) ||
(yresolution == EVDEV_FAKE_RESOLUTION && xresolution != yresolution)) {
log_bug_libinput(libinput,
"Invalid x/y resolutions %d/%d\n",
xresolution, yresolution);
if (libevdev_get_abs_resolution(evdev, xcode) != 0)
return 0;
}
absx = libevdev_get_abs_info(evdev, xcode);
absy = libevdev_get_abs_info(evdev, ycode);
/* libevdev_set_abs_resolution() changes the absinfo we already
have a pointer to, no need to fetch it again */
libevdev_set_abs_resolution(evdev, xcode, xres);
libevdev_set_abs_resolution(evdev, ycode, yres);
if (absx->resolution == 0 || absx->resolution == EVDEV_FAKE_RESOLUTION) {
fixed = *absx;
fixed.resolution = xresolution;
/* libevdev_set_abs_info() changes the absinfo we already
have a pointer to, no need to fetch it again */
libevdev_set_abs_info(evdev, xcode, &fixed);
rc = 1;
}
if (absy->resolution == 0 || absy->resolution == EVDEV_FAKE_RESOLUTION) {
fixed = *absy;
fixed.resolution = yresolution;
/* libevdev_set_abs_info() changes the absinfo we already
have a pointer to, no need to fetch it again */
libevdev_set_abs_info(evdev, ycode, &fixed);
rc = 1;
}
return rc;
return 1;
}
static enum evdev_device_udev_tags
@ -1774,9 +1749,7 @@ evdev_configure_mt_device(struct evdev_device *device)
if (evdev_fix_abs_resolution(device,
ABS_MT_POSITION_X,
ABS_MT_POSITION_Y,
EVDEV_FAKE_RESOLUTION,
EVDEV_FAKE_RESOLUTION))
ABS_MT_POSITION_Y))
device->abs.fake_resolution = 1;
device->abs.absinfo_x = libevdev_get_abs_info(evdev, ABS_MT_POSITION_X);
@ -1900,11 +1873,7 @@ evdev_configure_device(struct evdev_device *device)
evdev_fix_android_mt(device);
if (libevdev_has_event_code(evdev, EV_ABS, ABS_X)) {
if (evdev_fix_abs_resolution(device,
ABS_X,
ABS_Y,
EVDEV_FAKE_RESOLUTION,
EVDEV_FAKE_RESOLUTION))
if (evdev_fix_abs_resolution(device, ABS_X, ABS_Y))
device->abs.fake_resolution = 1;
device->abs.absinfo_x = libevdev_get_abs_info(evdev, ABS_X);
device->abs.absinfo_y = libevdev_get_abs_info(evdev, ABS_Y);