1// SuperTux
2// Copyright (C) 2016 Hume2 <teratux.mail@gmail.com>
3//
4// This program is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// This program is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with this program. If not, see <http://www.gnu.org/licenses/>.
16
17#ifndef HEADER_SUPERTUX_EDITOR_SCROLLER_WIDGET_HPP
18#define HEADER_SUPERTUX_EDITOR_SCROLLER_WIDGET_HPP
19
20#include "editor/widget.hpp"
21#include "math/vector.hpp"
22
23class Editor;
24class DrawingContext;
25union SDL_Event;
26
27/** A little virtual joystick that can be used to scroll around the
28 level with the mouse. */
29class EditorScrollerWidget final : public Widget
30{
31public:
32 static bool rendered;
33
34public:
35 EditorScrollerWidget(Editor& editor);
36
37 virtual void draw(DrawingContext& context) override;
38 virtual void update(float dt_sec) override;
39
40 virtual bool on_mouse_button_up(const SDL_MouseButtonEvent& button) override;
41 virtual bool on_mouse_button_down(const SDL_MouseButtonEvent& button) override;
42 virtual bool on_mouse_motion(const SDL_MouseMotionEvent& motion) override;
43 virtual bool on_key_down(const SDL_KeyboardEvent& key) override;
44
45public:
46 void draw_arrow(DrawingContext&, const Vector& pos);
47 bool can_scroll() const;
48
49private:
50 Editor& m_editor;
51 bool m_scrolling;
52 Vector m_scrolling_vec;
53 Vector m_mouse_pos;
54
55private:
56 EditorScrollerWidget(const EditorScrollerWidget&) = delete;
57 EditorScrollerWidget& operator=(const EditorScrollerWidget&) = delete;
58};
59
60#endif
61
62/* EOF */
63