Commit Graph

21 Commits

Author SHA1 Message Date
Lionel Landwerlin
927624d92c input-device: add APIs to grab sequences of touch events
https://bugzilla.gnome.org/show_bug.cgi?id=678279
2012-06-22 21:48:58 +01:00
Neil Roberts
13e3f9e5f1 Add an input device function to convert keycodes to evdev codes
This adds a virtual function to ClutterInputDevice to translate a
keycode from the hardware_keycode member of ClutterKeyEvent to an
evdev keycode. The function can fail so that input backends that don't
have a sensible way to translate to evdev keycodes can return FALSE.
There are implementations for evdev, wayland and X. The X
implementation assumes that the X server is using an evdev driver in
which case the hardware keycodes are the evdev codes plus 8.

Reviewed-by: Emmanuele Bassi <ebassi@linux.intel.com>
2012-03-01 11:41:51 +00:00
Emmanuele Bassi
fb9df4bef2 Annotate all functions available since 1.10 2012-02-27 16:35:09 +00:00
Emmanuele Bassi
d28e04be72 Move all enumerations to a separate file
This should allow sharing types, and we can avoid glib-mkenums thrawling
the whole repository for enumerations.
2011-10-11 17:59:46 +01:00
Emmanuele Bassi
b6dd306998 Clean up grab implementation
The grab API is a relic of Clutter 0.6, and hasn't been through proper
vetting in a *long* time — mostly due to the fact that we don't really
like grabs, and point to the ::captured-event as a way to implement
"soft grabs" in toolkits and applications.

The implementation of full and device grabs uses weak references on
actors instead of using the ::destroy signal, which is meant exactly for
the case of releasing pointers to actors when they are disposed.

The API naming scheme is also fairly broken, especially for
device-related grabs.

Finally, keyboard device grabs are just not implemented.

We can, in one go, clean up this mess and deprecate a bunch of badly
named API by introducing generic device grab/ungrab methods on
ClutterInputDevice, and re-implement the current API on top of them.
2011-10-11 17:15:34 +01:00
Emmanuele Bassi
2b81d90dd7 Eliminate G_CONST_RETURN
The G_CONST_RETURN define in GLib is, and has always been, a bit fuzzy.

We always used it to conform to the platform, at least for public-facing
API.

At first I assumed it has something to do with brain-damaged compilers
or with weird platforms where const was not really supported; sadly,
it's something much, much worse: it's a define that can be toggled at
compile-time to remove const from the signature of public API. This is a
truly terrifying feature that I assume was added in the past century,
and whose inception clearly had something to do with massive doses of
absynthe and opium — because any other explanation would make the
existence of such a feature even worse than assuming drugs had anything
to do with it.

Anyway, and pleasing the gods, this dubious feature is being
removed/deprecated in GLib; see bug:

  https://bugzilla.gnome.org/show_bug.cgi?id=644611

Before deprecation, though, we should just remove its usage from the
whole API. We should especially remove its usage from Cally's internals,
since there it never made sense in the first place.
2011-06-07 16:06:24 +01:00
Emmanuele Bassi
73cf6bd52c device: Allow enabling/disabling non-master devices
Slave and floating devices should always be disabled, and not deliver
events to the scene. It is up to the user to enable non-master devices
and handle events coming from them.

ClutterInputDevice gets a new :enabled property, defaulting to FALSE;
when a device manager creates a new device it has to set it to TRUE if
the :device-mode property is set to CLUTTER_INPUT_MODE_MASTER.

The main event queue entry point, _clutter_event_push(), will
automatically discard events coming from disabled devices.
2011-01-21 10:25:45 +00:00
Emmanuele Bassi
dd5f6ca7e1 device: Add more accessors for properties
Allow using real accessor methods for getting the ClutterInputDevice
properties set on construction.
2011-01-21 10:25:45 +00:00
Emmanuele Bassi
333ca35cec device: Add get_axis_value()
We need a convenience function for extracting the value of a specific
axis type out of the array of axis values attached to events.
2011-01-21 10:25:45 +00:00
Emmanuele Bassi
431200f40d device: Add keys and axes accessors
Allow retrieving the number of keys and axes, since we provide the API
to iterate over them both.
2011-01-21 10:25:44 +00:00
Emmanuele Bassi
a3102a777e docs: Fill out documentation for new symbols 2011-01-21 10:25:44 +00:00
Emmanuele Bassi
caf359d8c9 input-device: Add documentation 2011-01-21 10:25:43 +00:00
Emmanuele Bassi
2777c52f27 input-device: Make ClutterInputDeviceClass private
We keep the symbol in the public header, but the definition is now
private. You could not sub-class InputDevice anyway, without the
instance structure, and the lack of padding in the class made actually
implementing devices in backends really hard.
2011-01-21 10:25:43 +00:00
Emmanuele Bassi
1b1e77b469 event/x11: Rework the way we translate X11 events
This is a lump commit that is fairly difficult to break down without
either breaking bisecting or breaking the test cases.

The new design for handling X11 event translation works this way:

  - ClutterBackend::translate_event() has been added as the central
    point used by a ClutterBackend implementation to translate a
    native event into a ClutterEvent;

  - ClutterEventTranslator is a private interface that should be
    implemented by backend-specific objects, like stage
    implementations and ClutterDeviceManager sub-classes, and
    allows dealing with class-specific event translation;

  - ClutterStageX11 implements EventTranslator, and deals with the
    stage-relative X11 events coming from the X11 event source;

  - ClutterStageGLX overrides EventTranslator, in order to
    deal with the INTEL_GLX_swap_event extension, and it chains up
    to the X11 default implementation;

  - ClutterDeviceManagerX11 has been split into two separate classes,
    one that deals with core and (optionally) XI1 events, and the
    other that deals with XI2 events; the selection is done at run-time,
    since the core+XI1 and XI2 mechanisms are mutually exclusive.

All the other backends we officially support still use their own
custom event source and translation function, but the end goal is to
migrate them to the translate_event() virtual function, and have the
event source be a shared part of Clutter core.
2011-01-21 10:25:43 +00:00
Damien Lespiau
c6493885c3 evdev: First stab at an evdev backend
This backend is a event backend that can be enabled for EGL (for now).
It uses udev (gudev) to query input devices on a linux system, listens to
keyboard events from input devices and xkbcommon to translate raw key
codes into key keysyms.

This commit only supports key events, more to follow.
2010-11-30 14:40:37 +00:00
Emmanuele Bassi
51a3e49c82 device: Allow updating devices from embedding toolkits
Embedding toolkits most likely will disable the event handling, so all
the input device code will not be executed. Unfortunately, the newly
added synthetic event generation of ENTER and LEAVE event pairs depends
on having input devices.

In order to unbreak things without reintroducing the madness of the
previous code we should allow embedding toolkits to just update the
state of an InputDevice by using the data contained inside the
ClutterEvent. This strategy has two obvious reasons:

  • the embedding toolkit is creating a ClutterEvent by translating
    a toolkit-native event anyway

  • this is exactly what ClutterStage does when processing events

We are, essentially, deferring input device handling to the embedding
toolkits, just like we're deferring event handling to them.
2010-02-17 18:21:50 +00:00
Emmanuele Bassi
cf4e05930a device: Add the :name property to InputDevice
The InputDevice should have a name, possibly user readable, coming from
the backend.
2010-01-20 00:38:09 +00:00
Emmanuele Bassi
55e4315aa5 device: Add pointer actor getter
ClutterInputDevice should have a getter method for retrieving the
reactive actor underneath the pointer.
2010-01-20 00:38:09 +00:00
Emmanuele Bassi
a056ae7164 Add docs and licensing notices 2010-01-20 00:38:08 +00:00
Emmanuele Bassi
9506510d1c Move all picking-related operations inside InputDevice
The InputDevice objects stores pointer coordinates, state, stage and
the actor under the cursor, so if the current backend provides us with
one attached to the Event structure then we want the InputDevice itself
to update its state and give us the ClutterActor underneath the
pointer's cursor.
2010-01-20 00:38:08 +00:00
Emmanuele Bassi
d23dd9af6b device: Make InputDevice an object and subclass it for X11
ClutterInputDevice should be a type that we can subclass per-backend
to add functionality.
2010-01-20 00:38:08 +00:00