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MetaWaylandPointerConstraint: Fix effective region calculation

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The when surface->input_region is NULL, it should be interpreted as the
whole surface region. If not, the effective input region is the
intersection of the buffer region and the input region set by
wl_surface.set_input_region. Add
meta_wayland_surface_calculate_input_region() that does this
calculation.

https://bugzilla.gnome.org/show_bug.cgi?id=762661
This commit is contained in:
Jonas Ådahl 2016-02-23 21:26:52 +08:00
parent 0882bce989
commit 62ac9df43d
3 changed files with 27 additions and 2 deletions
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4
src/wayland/meta-wayland-pointer-constraints.c
View file

@ -237,7 +237,7 @@ is_within_constraint_region (MetaWaylandPointerConstraint *constraint,
gboolean is_within;
region = meta_wayland_pointer_constraint_calculate_effective_region (constraint);
is_within = cairo_region_contains_point (constraint->region,
is_within = cairo_region_contains_point (region,
wl_fixed_to_int (sx),
wl_fixed_to_int (sy));
cairo_region_destroy (region);
@ -330,7 +330,7 @@ meta_wayland_pointer_constraint_calculate_effective_region (MetaWaylandPointerCo
{
cairo_region_t *region;
region = cairo_region_copy (constraint->surface->input_region);
region = meta_wayland_surface_calculate_input_region (constraint->surface);
cairo_region_intersect (region, constraint->region);
return region;

23
src/wayland/meta-wayland-surface.c
View file

@ -2754,3 +2754,26 @@ meta_wayland_surface_role_subsurface_class_init (MetaWaylandSurfaceRoleSubsurfac
surface_role_class->commit = subsurface_surface_commit;
surface_role_class->is_on_output = actor_surface_is_on_output;
}
cairo_region_t *
meta_wayland_surface_calculate_input_region (MetaWaylandSurface *surface)
{
cairo_region_t *region;
cairo_rectangle_int_t buffer_rect;
CoglTexture *texture;
if (!surface->buffer)
return NULL;
texture = surface->buffer->texture;
buffer_rect = (cairo_rectangle_int_t) {
.width = cogl_texture_get_width (texture) / surface->scale,
.height = cogl_texture_get_height (texture) / surface->scale,
};
region = cairo_region_create_rectangle (&buffer_rect);
if (surface->input_region)
cairo_region_intersect (region, surface->input_region);
return region;
}

2
src/wayland/meta-wayland-surface.h
View file

@ -287,4 +287,6 @@ void meta_wayland_surface_get_absolute_coordinates (MetaWaylandSu
MetaWaylandSurface * meta_wayland_surface_role_get_surface (MetaWaylandSurfaceRole *role);
cairo_region_t * meta_wayland_surface_calculate_input_region (MetaWaylandSurface *surface);
#endif