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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#include <AK/Vector.h>
30#include <AK/WeakPtr.h>
31#include <LibCore/Object.h>
32#include <LibGfx/Forward.h>
33#include <LibGfx/Rect.h>
34
35namespace WindowServer {
36
37class KeyEvent;
38class Window;
39
40class WindowSwitcher final : public Core::Object {
41 C_OBJECT(WindowSwitcher)
42public:
43 static WindowSwitcher& the();
44
45 WindowSwitcher();
46 virtual ~WindowSwitcher() override;
47
48 bool is_visible() const { return m_visible; }
49 void set_visible(bool);
50
51 void show() { set_visible(true); }
52 void hide() { set_visible(false); }
53
54 void on_key_event(const KeyEvent&);
55
56 void refresh();
57 void refresh_if_needed();
58
59 void select_window(Window&);
60
61private:
62 int thumbnail_width() const { return 40; }
63 int thumbnail_height() const { return 40; }
64 int item_height() const { return 10 + thumbnail_height(); }
65 int padding() const { return 8; }
66 int item_padding() const { return 8; }
67
68 void draw();
69 void redraw();
70 void select_window_at_index(int index);
71 Gfx::Rect item_rect(int index) const;
72 Window* selected_window();
73
74 virtual void event(Core::Event&) override;
75
76 RefPtr<Window> m_switcher_window;
77 Gfx::Rect m_rect;
78 bool m_visible { false };
79 Vector<WeakPtr<Window>> m_windows;
80 int m_selected_index { 0 };
81 int m_hovered_index { -1 };
82};
83
84}