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backends: Delegate pointer confinements to an impl object

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Split pointer confinements in 2 objects, one set from the upper layers
containing its definition, and another managed by the backend that
applies it.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1403>
This commit is contained in:
Carlos Garnacho
2020-07-08 18:17:13 +02:00
committed by Marge Bot
parent efd065259d
commit 8a8d47725c
15 changed files with 1134 additions and 813 deletions
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91
src/backends/meta-pointer-constraint.c
View File

@ -39,10 +39,34 @@
#include "backends/meta-pointer-constraint.h"
#ifdef HAVE_NATIVE_BACKEND
#include "backends/native/meta-backend-native.h"
#include "backends/native/meta-pointer-constraint-native.h"
#endif
#include <glib-object.h>
struct _MetaPointerConstraint
{
GObject parent_instance;
cairo_region_t *region;
};
G_DEFINE_TYPE (MetaPointerConstraint, meta_pointer_constraint, G_TYPE_OBJECT);
G_DEFINE_TYPE (MetaPointerConstraintImpl, meta_pointer_constraint_impl,
G_TYPE_OBJECT);
static void
meta_pointer_constraint_finalize (GObject *object)
{
MetaPointerConstraint *constraint = META_POINTER_CONSTRAINT (object);
g_clear_pointer (&constraint->region, cairo_region_destroy);
G_OBJECT_CLASS (meta_pointer_constraint_parent_class)->finalize (object);
}
static void
meta_pointer_constraint_init (MetaPointerConstraint *constraint)
{
@ -50,12 +74,43 @@ meta_pointer_constraint_init (MetaPointerConstraint *constraint)
static void
meta_pointer_constraint_class_init (MetaPointerConstraintClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = meta_pointer_constraint_finalize;
}
MetaPointerConstraint *
meta_pointer_constraint_new (const cairo_region_t *region)
{
MetaPointerConstraint *constraint;
constraint = g_object_new (META_TYPE_POINTER_CONSTRAINT, NULL);
constraint->region = cairo_region_copy (region);
return constraint;
}
cairo_region_t *
meta_pointer_constraint_get_region (MetaPointerConstraint *constraint)
{
return constraint->region;
}
static void
meta_pointer_constraint_impl_init (MetaPointerConstraintImpl *constraint_impl)
{
}
static void
meta_pointer_constraint_impl_class_init (MetaPointerConstraintImplClass *klass)
{
}
/**
* meta_pointer_constraint_constrain:
* @constraint: a #MetaPointerConstraint.
* meta_pointer_constraint_impl_constrain:
* @constraint_impl: a #MetaPointerConstraintImpl.
* @device; the device of the pointer.
* @time: the timestamp (in ms) of the event.
* @prev_x: X-coordinate of the previous pointer position.
@ -67,17 +122,25 @@ meta_pointer_constraint_class_init (MetaPointerConstraintClass *klass)
* if needed.
*/
void
meta_pointer_constraint_constrain (MetaPointerConstraint *constraint,
ClutterInputDevice *device,
guint32 time,
float prev_x,
float prev_y,
float *x,
float *y)
meta_pointer_constraint_impl_constrain (MetaPointerConstraintImpl *constraint_impl,
ClutterInputDevice *device,
uint32_t time,
float prev_x,
float prev_y,
float *x,
float *y)
{
META_POINTER_CONSTRAINT_GET_CLASS (constraint)->constrain (constraint,
device,
time,
prev_x, prev_y,
x, y);
META_POINTER_CONSTRAINT_IMPL_GET_CLASS (constraint_impl)->constrain (constraint_impl,
device,
time,
prev_x, prev_y,
x, y);
}
void
meta_pointer_constraint_impl_ensure_constrained (MetaPointerConstraintImpl *constraint_impl,
ClutterInputDevice *device)
{
META_POINTER_CONSTRAINT_IMPL_GET_CLASS (constraint_impl)->ensure_constrained (constraint_impl,
device);
}