// GetSubsurfaces returns a list of subsurfaces for a surface.
func (s Resource) GetSubsurfaces() []Resource {
var len C.size_t
resouces := C.wlc_surface_get_subsurfaces(C.wlc_resource(s), &len)
subsurfaces := make([]Resource, int(len))
size := int(unsafe.Sizeof(*resouces))
for i := 0; i < int(len); i++ {
ptr := unsafe.Pointer(uintptr(unsafe.Pointer(resouces)) + uintptr(size*i))
subsurfaces[i] = *(*Resource)(ptr)
}
return subsurfaces
}
// ViewFromSurface turns wl_surface into a wlc view. Returns 0 on failure.
// This will also trigger view.created callback as any view would.
func ViewFromSurface(surface Resource, client *C.struct_wl_client, interf *C.struct_wl_interface, implementation unsafe.Pointer, version, id uint32, userdata unsafe.Pointer) View {
return View(
C.wlc_view_from_surface(
C.wlc_resource(surface),
client,
interf,
implementation,
C.uint32_t(version),
C.uint32_t(id),
userdata,
))
}
// GetTextures returns an array with the textures of a surface. Returns error
// if surface is invalid. Note that these are not only OpenGL textures but
// rather render-specific.
func (s Resource) GetTextures() ([3]uint32, SurfaceFormat, error) {
var outTextures [3]C.uint32_t
var format C.enum_wlc_surface_format
val := bool(C.wlc_surface_get_textures(C.wlc_resource(s), &outTextures[0], &format))
if val {
var textures [3]uint32
for i, t := range outTextures {
textures[i] = uint32(t)
}
return textures, SurfaceFormat(format), nil
}
return [3]uint32{}, 0, fmt.Errorf("invalid surface")
}
// FlushFrameCallbacks adds frame callbacks of the given surface for the next
// output frame. It applies recursively to all subsurfaces. Useful when the
// compositor creates custom animations which require disabling internal
// rendering, but still need to update the surface textures (for ex. video
// players).
func (s Resource) FlushFrameCallbacks() {
C.wlc_surface_flush_frame_callbacks(C.wlc_resource(s))
}
// Render renders surfaces inside post / pre render hooks.
func (s Resource) Render(geometry Geometry) {
cgeometry := geometry.c()
defer C.free(unsafe.Pointer(cgeometry))
C.wlc_surface_render(C.wlc_resource(s), cgeometry)
}
// GetSubsurfaceGeometry returns the size of a subsurface and its position
// relative to parent surface.
func (s Resource) GetSubsurfaceGeometry() Geometry {
cgeometry := C.struct_wlc_geometry{}
C.wlc_get_subsurface_geometry(C.wlc_resource(s), &cgeometry)
return *geometryCtoGo(&Geometry{}, &cgeometry)
}
// SurfaceGetWLResource returns wl_surface resource from internal wlc surface.
func SurfaceGetWLResource(surface Resource) *C.struct_wl_resource {
return C.wlc_surface_get_wl_resource(C.wlc_resource(surface))
}
// SurfaceGetSize gets surface size.
func SurfaceGetSize(surface Resource) *Size {
csize := C.wlc_surface_get_size(C.wlc_resource(surface))
return sizeCtoGo(csize)
}