File: pane_drag.cpp

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/*************************************************************************/
/*  pane_drag.cpp                                                        */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#include "pane_drag.h"

void PaneDrag::_gui_input(const Ref<InputEvent> &p_input) {

	Ref<InputEventMouseMotion> mm = p_input;
	if (mm.is_valid() && mm->get_button_mask() & BUTTON_MASK_LEFT) {

		emit_signal("dragged", Point2(mm->get_relative().x, mm->get_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() {

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

PaneDrag::PaneDrag() {

	mouse_over = false;
}