godot/editor/pane_drag.cpp

/*************************************************************************/
/*  pane_drag.cpp                                                        */
/*************************************************************************/
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/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
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#include "pane_drag.h"

void PaneDrag::_input_event(const InputEvent &p_input) {

	if (p_input.type == InputEvent::MOUSE_MOTION && p_input.mouse_motion.button_mask & BUTTON_MASK_LEFT) {

		emit_signal("dragged", Point2(p_input.mouse_motion.relative_x, p_input.mouse_motion.relative_y));
	}
}

void PaneDrag::_notification(int p_what) {

	switch (p_what) {

		case NOTIFICATION_DRAW: {

			Ref<Texture> icon = mouse_over ? get_icon("PaneDragHover", "EditorIcons") : get_icon("PaneDrag", "EditorIcons");
			if (!icon.is_null())
				icon->draw(get_canvas_item(), Point2(0, 0));

		} break;
		case NOTIFICATION_MOUSE_ENTER:
			mouse_over = true;
			update();
			break;
		case NOTIFICATION_MOUSE_EXIT:
			mouse_over = false;
			update();
			break;
	}
}
Size2 PaneDrag::get_minimum_size() const {

	Ref<Texture> icon = get_icon("PaneDrag", "EditorIcons");
	if (!icon.is_null())
		return icon->get_size();
	return Size2();
}

void PaneDrag::_bind_methods() {

	ObjectTypeDB::bind_method("_input_event", &PaneDrag::_input_event);
	ADD_SIGNAL(MethodInfo("dragged", PropertyInfo(Variant::VECTOR2, "amount")));
}

PaneDrag::PaneDrag() {

	mouse_over = false;
}