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hidpp10drv: enable writing of resolution for programmable devices

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Need to dance a little bit to preserve the current settings.

Fixes #23

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
This commit is contained in:
Benjamin Tissoires
2015-12-11 17:00:27 +01:00
parent eb6e312bf3
commit a23cb4f22d
1 changed files with 44 additions and 0 deletions
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44
src/driver-hidpp10.c
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@@ -301,6 +301,49 @@ hidpp10drv_write_profile(struct ratbag_profile *profile)
return 0;
}
static int
hidpp10drv_write_resolution_dpi(struct ratbag_resolution *resolution,
int dpi_x, int dpi_y)
{
struct ratbag_profile *profile = resolution->profile;
struct ratbag_device *device = profile->device;
struct hidpp10drv_data *drv_data = ratbag_get_drv_data(device);
struct hidpp10_device *hidpp10 = drv_data->dev;
struct hidpp10_profile p;
unsigned int index;
uint16_t cur_dpi_x, cur_dpi_y;
int rc;
rc = hidpp10_get_profile(hidpp10, profile->index, &p);
if (rc)
return rc;
/* store the current resolution */
rc = hidpp10_get_current_resolution(hidpp10, &cur_dpi_x, &cur_dpi_y);
if (rc)
return rc;
if (resolution->is_active) {
/* we need to switch to the new resolution */
cur_dpi_x = dpi_x;
cur_dpi_y = dpi_y;
}
/* retrieve which resolution is asked to be changed */
index = resolution - profile->resolution.modes;
p.dpi_modes[index].xres = dpi_x;
p.dpi_modes[index].yres = dpi_y;
/* this effectively switches the resolution to the default in the profile */
rc = hidpp10_set_profile(drv_data->dev, profile->index, &p);
if (rc)
return rc;
/* restore the current setting */
return hidpp10_set_current_resolution(hidpp10, cur_dpi_x, cur_dpi_y);
}
static int
hidpp10drv_fill_from_profile(struct ratbag_device *device, struct hidpp10_device *dev)
{
@@ -483,4 +526,5 @@ struct ratbag_driver hidpp10_driver = {
.has_capability = hidpp10drv_has_capability,
.read_button = hidpp10drv_read_button,
.write_button = hidpp10drv_write_button,
.write_resolution_dpi = hidpp10drv_write_resolution_dpi,
};