Golang glib.ToGObject函数代码示例

//export goBuilderConnect
func goBuilderConnect(builder *C.GtkBuilder,
	object *C.GObject,
	signal_name *C.gchar,
	handler_name *C.gchar,
	connect_object *C.GObject,
	flags C.GConnectFlags,
	user_data C.gpointer) {

	builderSignals.Lock()
	signals, ok := builderSignals.m[builder]
	builderSignals.Unlock()

	if !ok {
		panic("no signal mapping defined for this GtkBuilder")
	}

	h := C.GoString((*C.char)(handler_name))
	s := C.GoString((*C.char)(signal_name))

	handler, ok := signals[h]
	if !ok {
		return
	}

	if object == nil {
		panic("unexpected nil object from builder")
	}

	//TODO: figure out a better way to get a glib.Object from a *C.GObject
	gobj := glib.Object{glib.ToGObject(unsafe.Pointer(object))}
	gobj.Connect(s, handler)
}

func toDisplay(s *C.GdkDisplay) (*Display, error) {
	if s == nil {
		return nil, nilPtrErr
	}
	obj := &glib.Object{glib.ToGObject(unsafe.Pointer(s))}
	return &Display{obj}, nil
}

func toScreen(s *C.GdkScreen) (*Screen, error) {
	if s == nil {
		return nil, nilPtrErr
	}
	obj := &glib.Object{glib.ToGObject(unsafe.Pointer(s))}
	return &Screen{obj}, nil
}

func toWindow(s *C.GdkWindow) (*Window, error) {
	if s == nil {
		return nil, nilPtrErr
	}
	obj := &glib.Object{glib.ToGObject(unsafe.Pointer(s))}
	return &Window{obj}, nil
}

// GetDisplay() is a wrapper around gdk_device_manager_get_display().
func (v *DeviceManager) GetDisplay() (*Display, error) {
	c := C.gdk_device_manager_get_display(v.native())
	if c == nil {
		return nil, nilPtrErr
	}
	obj := &glib.Object{glib.ToGObject(unsafe.Pointer(c))}
	obj.Ref()
	runtime.SetFinalizer(obj, (*glib.Object).Unref)
	return &Display{obj}, nil
}

// Flip is a wrapper around gdk_pixbuf_flip().
func (v *Pixbuf) Flip(horizontal bool) (*Pixbuf, error) {
	c := C.gdk_pixbuf_flip(v.native(), gbool(horizontal))
	if c == nil {
		return nil, nilPtrErr
	}
	obj := &glib.Object{glib.ToGObject(unsafe.Pointer(c))}
	p := &Pixbuf{obj}
	runtime.SetFinalizer(obj, (*glib.Object).Unref)
	return p, nil
}

// ApplyEmbeddedOrientation is a wrapper around gdk_pixbuf_apply_embedded_orientation().
func (v *Pixbuf) ApplyEmbeddedOrientation() (*Pixbuf, error) {
	c := C.gdk_pixbuf_apply_embedded_orientation(v.native())
	if c == nil {
		return nil, nilPtrErr
	}
	obj := &glib.Object{glib.ToGObject(unsafe.Pointer(c))}
	p := &Pixbuf{obj}
	runtime.SetFinalizer(obj, (*glib.Object).Unref)
	return p, nil
}

// RotateSimple is a wrapper around gdk_pixbuf_rotate_simple().
func (v *Pixbuf) RotateSimple(angle PixbufRotation) (*Pixbuf, error) {
	c := C.gdk_pixbuf_rotate_simple(v.native(), C.GdkPixbufRotation(angle))
	if c == nil {
		return nil, nilPtrErr
	}
	obj := &glib.Object{glib.ToGObject(unsafe.Pointer(c))}
	p := &Pixbuf{obj}
	runtime.SetFinalizer(obj, (*glib.Object).Unref)
	return p, nil
}

// PixbufCopy is a wrapper around gdk_pixbuf_copy().
func PixbufCopy(v *Pixbuf) (*Pixbuf, error) {
	c := C.gdk_pixbuf_copy(v.native())
	if c == nil {
		return nil, nilPtrErr
	}
	obj := &glib.Object{glib.ToGObject(unsafe.Pointer(c))}
	p := &Pixbuf{obj}
	runtime.SetFinalizer(obj, (*glib.Object).Unref)
	return p, nil
}

// GetPixbuf is a wrapper around gdk_pixbuf_loader_get_pixbuf().
func (v *PixbufLoader) GetPixbuf() (*Pixbuf, error) {
	c := C.gdk_pixbuf_loader_get_pixbuf(v.native())
	if c == nil {
		return nil, nilPtrErr
	}
	obj := &glib.Object{glib.ToGObject(unsafe.Pointer(c))}
	p := &Pixbuf{obj}
	obj.Ref()
	runtime.SetFinalizer(obj, (*glib.Object).Unref)
	return p, nil
}

// ScaleSimple is a wrapper around gdk_pixbuf_scale_simple().
func (v *Pixbuf) ScaleSimple(destWidth, destHeight int, interpType InterpType) (*Pixbuf, error) {
	c := C.gdk_pixbuf_scale_simple(v.native(), C.int(destWidth),
		C.int(destHeight), C.GdkInterpType(interpType))
	if c == nil {
		return nil, nilPtrErr
	}
	obj := &glib.Object{glib.ToGObject(unsafe.Pointer(c))}
	p := &Pixbuf{obj}
	runtime.SetFinalizer(obj, (*glib.Object).Unref)
	return p, nil
}

// GetSystemVisual is a wrapper around gdk_screen_get_system_visual().
func (v *Screen) GetSystemVisual() (*Visual, error) {
	c := C.gdk_screen_get_system_visual(v.native())
	if c == nil {
		return nil, nilPtrErr
	}
	obj := &glib.Object{glib.ToGObject(unsafe.Pointer(c))}
	visual := &Visual{obj}
	obj.Ref()
	runtime.SetFinalizer(obj, (*glib.Object).Unref)
	return visual, nil
}

// GetDefaultScreen() is a wrapper around gdk_display_get_default_screen().
func (v *Display) GetDefaultScreen() (*Screen, error) {
	c := C.gdk_display_get_default_screen(v.native())
	if c == nil {
		return nil, nilPtrErr
	}
	obj := &glib.Object{glib.ToGObject(unsafe.Pointer(c))}
	s := &Screen{obj}
	obj.Ref()
	runtime.SetFinalizer(obj, (*glib.Object).Unref)
	return s, nil
}

// PixbufNew is a wrapper around gdk_pixbuf_new().
func PixbufNew(colorspace Colorspace, hasAlpha bool, bitsPerSample, width, height int) (*Pixbuf, error) {
	c := C.gdk_pixbuf_new(C.GdkColorspace(colorspace), gbool(hasAlpha),
		C.int(bitsPerSample), C.int(width), C.int(height))
	if c == nil {
		return nil, nilPtrErr
	}
	obj := &glib.Object{glib.ToGObject(unsafe.Pointer(c))}
	p := &Pixbuf{obj}
	runtime.SetFinalizer(obj, (*glib.Object).Unref)
	return p, nil
}

// GetDefaultGroup() is a wrapper around gdk_display_get_default_group().
func (v *Display) GetDefaultGroup() (*Window, error) {
	c := C.gdk_display_get_default_group(v.native())
	if c == nil {
		return nil, nilPtrErr
	}
	obj := &glib.Object{glib.ToGObject(unsafe.Pointer(c))}
	w := &Window{obj}
	obj.Ref()
	runtime.SetFinalizer(obj, (*glib.Object).Unref)
	return w, nil
}