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The default grab implementation in wayland-server was updating the
focus resource before sending the button event. This would cause the
button release to be dropped from the implicit grab if the pointer is
moved away from the focus surface. This patch just swaps the order
around.
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This also matches the new wl_drm format names.
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This commit changes the way struct wl_grab works in a couple of ways:
- The grab itself now decides when it ends instead of hardcoding button
up as the terminating event. We remove the end vfunc since a grab now
always know when it ends and can just clean up at that point.
- We add a new focus vfunc that is invoked every time the pointer enters
a new surface, regardless of any grabs. The callback receives the
surface and the surface-relative pointer coordinates. The callback lets
a grab send enter/leave events and change the grab focus.
- The grab has a focus surface, wich determines the coordinate space
for the motion callback coordinates.
- The input device always tracks the current surface, ie the surface that
currently contains the pointer, and coordinates relative to that surface.
With these changes, we will be able to pull the core input event delivery
and the drag and drop grab into the core wayland-server library.
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Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
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Add a clean-up function for destroying all objects created in
wl_input_device_init(). Can be used to fix memory leaks reported by
Valgrind in the demos.
The init function was also missing an explicit initialisation of the
'keys' array. Add the explicit array init, although it is redundant with
the zeroing of the whole struct.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
krh: Edited to rename function to *_release()
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We now just use a table for looking up object IDs so we should drop the
hash table.
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Thiago Macieira compiles with -std=c++11.
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On wl_display_add_socket(), the listening socket fd is added to the
event loop. However, wl_event_source object is not stored and hence
cannot be freed, resulting in a minor leak.
Store wl_event_source pointer in struct wl_socket so we can track it,
and destroy it on wl_display_destroy(). The event loop itself must be
destroyed after destroying the event sources linked to it.
Fixes a Valgrind reported memory leak.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
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Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>
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Buffer size changed from 256 to 1024 bytes. Marshalling will now stop
if the buffer is not big enough.
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The only purpose those code seems to serve is to introduce a buffer
overflow when events contain more than 128 bytes of data.
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Memory leak found by valgrinding simple-shm client.
struct wl_global::interface is a strdup()'d string that was never freed.
Make a function for freeing a wl_global, and use it.
krh: Edit to name wl_global destructor wl_global_destroy.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
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WAYLAND_SOCKET contains a file descriptor that is an open connection to
a Wayland server. It is private to us, and makes no sense to relay the
same value (or any value) to our child processes.
Unset the environment variable to prevent it from being accidentally
relayed to other processes.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
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During client tear-down, all objects are destroyed in id order.
Therefore the display object is destroyed first.
If the destroy listeners of any object destroy another object by calling
wl_resoruce_destroy(), we try to send a delete_id event to the client.
This leads to a segmentation fault without a display object.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
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Requests like 'move' and 'set_toplevel' are really methods of a surface,
not methods of a global shell object. Move all these methods to a new
interface, wl_shell_surface.
The global object wl_shell will contain only 'get_shell_surface'
request, which creates and associates a wl_shell_surface object to a
given wl_surface object.
This will also give the shell plugin (if you look at the demo
compositor) means to store per-surface private data in a natural way.
Due to a limitation in delete_id event handling on client side, the
client must destroy its wl_shell_surface object before destroying the
wl_surface object. Otherwise it may just leak an id.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
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Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
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Set the next and prev pointers of the removed list element to NULL. This
will catch programming errors that would use invalid list pointers,
double-remove for instance.
It also helps debugging, making it easy to see in gdb if an object is
not in a list.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
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Do not try to send errors to an already dead client, while in the
middle of cleanup.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
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This commit brings a big change to the DND and copy/paste interfaces.
Most importantly the functionality is now independent of wl_shell.
The wl_shell interface is intended for desktop style UI interaction and
an optional and experimental interface.
The new interface also allows receiving the DND data multiple times or
multiple times during the drag, and the mechanism for offering and receiving
data is now shared between DND and selections.
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wl_compositor_init() was just adding the global and providing a helper
bind function. Not useful enough to warrent API.
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We set aside a range of the object ID space for use by the server. This
allows the server to bind an object to an ID for a client and pass that
object to the client. The client can use the object immediately and the
server can emit events to the object immdiately.
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Some events, such as the display.delete_id, aren't very urgent and we
would like to not always send them immdiately and cause an unnecessary
context switch. The wl_resource_queue_event() function will place the
event in the connection output buffer but not request the main loop to
poll for writable. The effect is that the event will just sit in the
output buffer until a more important event comes around and requires
flushing.
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We need to make sure the client doesn't reuse an object ID until the
server has seen the destroy request. When a client destroys an ID
the server will now respond with the display.delete_id event, which lets
the client block reuse until it receives the event.
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Instead of artificially introducing collisions in the step value by
replacing 0 with 1 (which causes the value 1 to have twice the
frequency of any other value), the step value can simply be computed
as an uniformly distributed value in the range [1, rehash], extremes
included.
This is safe because any step value smaller than the hash modulus is
co-prime with it, hence induces an orbit which includes every integer
in [0, size - 1].
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From a clang static analysis warning.
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When the last idle handler queues another idle handler, we fail to
dispatch that last handler. The wl_list_for_each_safe loop looks up
the next pointer before running the handler, and at that point it points
to the head of the list and the loop terminates.
Instead, just loop until the list is empty.
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Consistent with global args.
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Spotted by Jakob Bornecrantz.
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This helps spot and remove extraneous round trips and context switches.
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We no long track the focused surface, but expect the compositor to set
focus when the focus changes. We do track the resource for the input
device that corresponds to the current surface, in case that goes away.
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Object ID was read from freed memory.
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