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tablet: reset delta and changed axes as soon as we send them

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We don't have frame events for tablets so we must take care to send the
axis change notifications only once and leave the others as-is. Most of the
axes are absolute so it doesn't really matter, but we need to reset the delta
to make sure clients don't receive the same delta twice.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Ping Cheng <pingc@wacom.com>
This commit is contained in:
Peter Hutterer 2017-03-07 17:08:07 +10:00
parent a19d18f9c6
commit ae11eaa265
1 changed files with 32 additions and 5 deletions
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37
src/evdev-tablet.c
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@ -120,6 +120,12 @@ tablet_history_get(const struct tablet_dispatch *tablet, unsigned int index)
return &tablet->history.samples[index];
}
static inline void
tablet_reset_changed_axes(struct tablet_dispatch *tablet)
{
memset(tablet->changed_axes, 0, sizeof(tablet->changed_axes));
}
static bool
tablet_device_has_axis(struct tablet_dispatch *tablet,
enum libinput_tablet_tool_axis axis)
@ -1328,7 +1334,7 @@ static inline bool
tablet_send_proximity_in(struct tablet_dispatch *tablet,
struct libinput_tablet_tool *tool,
struct evdev_device *device,
const struct tablet_axes *axes,
struct tablet_axes *axes,
uint64_t time)
{
if (!tablet_has_status(tablet, TABLET_TOOL_ENTERING_PROXIMITY))
@ -1343,6 +1349,10 @@ tablet_send_proximity_in(struct tablet_dispatch *tablet,
tablet_unset_status(tablet, TABLET_TOOL_ENTERING_PROXIMITY);
tablet_unset_status(tablet, TABLET_AXES_UPDATED);
tablet_reset_changed_axes(tablet);
axes->delta.x = 0;
axes->delta.y = 0;
return true;
}
@ -1350,7 +1360,7 @@ static inline bool
tablet_send_proximity_out(struct tablet_dispatch *tablet,
struct libinput_tablet_tool *tool,
struct evdev_device *device,
const struct tablet_axes *axes,
struct tablet_axes *axes,
uint64_t time)
{
if (!tablet_has_status(tablet, TABLET_TOOL_LEAVING_PROXIMITY))
@ -1366,6 +1376,10 @@ tablet_send_proximity_out(struct tablet_dispatch *tablet,
tablet_set_status(tablet, TABLET_TOOL_OUT_OF_PROXIMITY);
tablet_unset_status(tablet, TABLET_TOOL_LEAVING_PROXIMITY);
tablet_reset_changed_axes(tablet);
axes->delta.x = 0;
axes->delta.y = 0;
return true;
}
@ -1373,7 +1387,7 @@ static inline bool
tablet_send_tip(struct tablet_dispatch *tablet,
struct libinput_tablet_tool *tool,
struct evdev_device *device,
const struct tablet_axes *axes,
struct tablet_axes *axes,
uint64_t time)
{
if (tablet_has_status(tablet, TABLET_TOOL_ENTERING_CONTACT)) {
@ -1386,6 +1400,11 @@ tablet_send_tip(struct tablet_dispatch *tablet,
tablet_unset_status(tablet, TABLET_AXES_UPDATED);
tablet_unset_status(tablet, TABLET_TOOL_ENTERING_CONTACT);
tablet_set_status(tablet, TABLET_TOOL_IN_CONTACT);
tablet_reset_changed_axes(tablet);
axes->delta.x = 0;
axes->delta.y = 0;
return true;
}
@ -1399,6 +1418,11 @@ tablet_send_tip(struct tablet_dispatch *tablet,
tablet_unset_status(tablet, TABLET_AXES_UPDATED);
tablet_unset_status(tablet, TABLET_TOOL_LEAVING_CONTACT);
tablet_unset_status(tablet, TABLET_TOOL_IN_CONTACT);
tablet_reset_changed_axes(tablet);
axes->delta.x = 0;
axes->delta.y = 0;
return true;
}
@ -1409,7 +1433,7 @@ static inline void
tablet_send_axes(struct tablet_dispatch *tablet,
struct libinput_tablet_tool *tool,
struct evdev_device *device,
const struct tablet_axes *axes,
struct tablet_axes *axes,
uint64_t time)
{
enum libinput_tablet_tool_tip_state tip_state;
@ -1430,6 +1454,9 @@ tablet_send_axes(struct tablet_dispatch *tablet,
tablet->changed_axes,
axes);
tablet_unset_status(tablet, TABLET_AXES_UPDATED);
tablet_reset_changed_axes(tablet);
axes->delta.x = 0;
axes->delta.y = 0;
}
static inline void
@ -1486,8 +1513,8 @@ tablet_send_events(struct tablet_dispatch *tablet,
if (!tablet_send_tip(tablet, tool, device, &axes, time))
tablet_send_axes(tablet, tool, device, &axes, time);
memset(tablet->changed_axes, 0, sizeof(tablet->changed_axes));
tablet_unset_status(tablet, TABLET_TOOL_ENTERING_CONTACT);
tablet_reset_changed_axes(tablet);
tablet_send_buttons(tablet, tool, device, time);