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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/String.h>
30#include <Kernel/KeyCode.h>
31#include <LibCore/Event.h>
32#include <LibGfx/Rect.h>
33#include <WindowServer/Cursor.h>
34#include <WindowServer/WindowType.h>
35
36namespace WindowServer {
37
38class Event : public Core::Event {
39public:
40 enum Type {
41 Invalid = 3000,
42 MouseMove,
43 MouseDown,
44 MouseDoubleClick,
45 MouseUp,
46 MouseWheel,
47 WindowEntered,
48 WindowLeft,
49 KeyDown,
50 KeyUp,
51 WindowActivated,
52 WindowDeactivated,
53 WindowCloseRequest,
54 WindowResized,
55 };
56
57 Event() {}
58 explicit Event(Type type)
59 : Core::Event(type)
60 {
61 }
62 virtual ~Event() {}
63
64 bool is_mouse_event() const { return type() == MouseMove || type() == MouseDown || type() == MouseDoubleClick || type() == MouseUp || type() == MouseWheel; }
65 bool is_key_event() const { return type() == KeyUp || type() == KeyDown; }
66};
67
68enum class MouseButton : u8 {
69 None = 0,
70 Left = 1,
71 Right = 2,
72 Middle = 4,
73};
74
75class KeyEvent final : public Event {
76public:
77 KeyEvent(Type type, int key, char character, u8 modifiers)
78 : Event(type)
79 , m_key(key)
80 , m_character(character)
81 , m_modifiers(modifiers)
82 {
83 }
84
85 int key() const { return m_key; }
86 bool ctrl() const { return m_modifiers & Mod_Ctrl; }
87 bool alt() const { return m_modifiers & Mod_Alt; }
88 bool shift() const { return m_modifiers & Mod_Shift; }
89 bool logo() const { return m_modifiers & Mod_Logo; }
90 u8 modifiers() const { return m_modifiers; }
91 char character() const { return m_character; }
92
93private:
94 friend class EventLoop;
95 friend class Screen;
96 int m_key { 0 };
97 char m_character { 0 };
98 u8 m_modifiers { 0 };
99};
100
101class MouseEvent final : public Event {
102public:
103 MouseEvent(Type type, const Gfx::Point& position, unsigned buttons, MouseButton button, unsigned modifiers, int wheel_delta = 0)
104 : Event(type)
105 , m_position(position)
106 , m_buttons(buttons)
107 , m_button(button)
108 , m_modifiers(modifiers)
109 , m_wheel_delta(wheel_delta)
110 {
111 }
112
113 Gfx::Point position() const { return m_position; }
114 int x() const { return m_position.x(); }
115 int y() const { return m_position.y(); }
116 MouseButton button() const { return m_button; }
117 unsigned buttons() const { return m_buttons; }
118 unsigned modifiers() const { return m_modifiers; }
119 int wheel_delta() const { return m_wheel_delta; }
120 bool is_drag() const { return m_drag; }
121 const String& drag_data_type() const { return m_drag_data_type; }
122
123 void set_drag(bool b) { m_drag = b; }
124 void set_drag_data_type(const String& drag_data_type) { m_drag_data_type = drag_data_type; }
125
126 MouseEvent translated(const Gfx::Point& delta) const { return MouseEvent((Type)type(), m_position.translated(delta), m_buttons, m_button, m_modifiers, m_wheel_delta); }
127
128private:
129 Gfx::Point m_position;
130 unsigned m_buttons { 0 };
131 MouseButton m_button { MouseButton::None };
132 unsigned m_modifiers { 0 };
133 int m_wheel_delta { 0 };
134 bool m_drag { false };
135 String m_drag_data_type;
136};
137
138class ResizeEvent final : public Event {
139public:
140 ResizeEvent(const Gfx::Rect& old_rect, const Gfx::Rect& rect)
141 : Event(Event::WindowResized)
142 , m_old_rect(old_rect)
143 , m_rect(rect)
144 {
145 }
146
147 Gfx::Rect old_rect() const { return m_old_rect; }
148 Gfx::Rect rect() const { return m_rect; }
149
150private:
151 Gfx::Rect m_old_rect;
152 Gfx::Rect m_rect;
153};
154
155}