1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
#pragma once
#include "Base.hpp"
#include "cru/common/Event.hpp"
#include "cru/platform/native/Keyboard.hpp"
#include <memory>
#include <optional>
#include <string>
#include <type_traits>
namespace cru::platform::graph {
struct IPainter;
}
namespace cru::ui {
class Control;
}
namespace cru::ui::event {
class UiEventArgs : public Object {
public:
UiEventArgs(Object* sender, Object* original_sender)
: sender_(sender), original_sender_(original_sender), handled_(false) {}
UiEventArgs(const UiEventArgs& other) = default;
UiEventArgs(UiEventArgs&& other) = default;
UiEventArgs& operator=(const UiEventArgs& other) = default;
UiEventArgs& operator=(UiEventArgs&& other) = default;
~UiEventArgs() override = default;
Object* GetSender() const { return sender_; }
Object* GetOriginalSender() const { return original_sender_; }
bool IsHandled() const { return handled_; }
void SetHandled(const bool handled = true) { handled_ = handled; }
private:
Object* sender_;
Object* original_sender_;
bool handled_;
};
// TEventArgs must not be a reference type. This class help add reference.
// EventArgs must be reference because the IsHandled property must be settable.
template <typename TEventArgs>
class RoutedEvent {
public:
static_assert(std::is_base_of_v<UiEventArgs, TEventArgs>,
"TEventArgs must be subclass of UiEventArgs.");
static_assert(!std::is_reference_v<TEventArgs>,
"TEventArgs must not be reference.");
using EventArgs = TEventArgs;
RoutedEvent() = default;
RoutedEvent(const RoutedEvent& other) = delete;
RoutedEvent(RoutedEvent&& other) = delete;
RoutedEvent& operator=(const RoutedEvent& other) = delete;
RoutedEvent& operator=(RoutedEvent&& other) = delete;
~RoutedEvent() = default;
IEvent<TEventArgs&>* Direct() { return &direct_; }
IEvent<TEventArgs&>* Bubble() { return &bubble_; }
IEvent<TEventArgs&>* Tunnel() { return &tunnel_; }
private:
Event<TEventArgs&> direct_;
Event<TEventArgs&> bubble_;
Event<TEventArgs&> tunnel_;
};
class MouseEventArgs : public UiEventArgs {
public:
MouseEventArgs(Object* sender, Object* original_sender,
const std::optional<Point>& point = std::nullopt)
: UiEventArgs(sender, original_sender), point_(point) {}
MouseEventArgs(const MouseEventArgs& other) = default;
MouseEventArgs(MouseEventArgs&& other) = default;
MouseEventArgs& operator=(const MouseEventArgs& other) = default;
MouseEventArgs& operator=(MouseEventArgs&& other) = default;
~MouseEventArgs() override = default;
// This point is relative to window client lefttop.
Point GetPoint() const { return point_.value_or(Point{}); }
private:
std::optional<Point> point_;
};
class MouseButtonEventArgs : public MouseEventArgs {
public:
MouseButtonEventArgs(Object* sender, Object* original_sender,
const Point& point, const MouseButton button,
platform::native::KeyModifier key_modifier)
: MouseEventArgs(sender, original_sender, point),
button_(button),
key_modifier_(key_modifier) {}
MouseButtonEventArgs(Object* sender, Object* original_sender,
const MouseButton button,
platform::native::KeyModifier key_modifier)
: MouseEventArgs(sender, original_sender),
button_(button),
key_modifier_(key_modifier) {}
MouseButtonEventArgs(const MouseButtonEventArgs& other) = default;
MouseButtonEventArgs(MouseButtonEventArgs&& other) = default;
MouseButtonEventArgs& operator=(const MouseButtonEventArgs& other) = default;
MouseButtonEventArgs& operator=(MouseButtonEventArgs&& other) = default;
~MouseButtonEventArgs() override = default;
MouseButton GetButton() const { return button_; }
platform::native::KeyModifier GetKeyModifier() const { return key_modifier_; }
private:
MouseButton button_;
platform::native::KeyModifier key_modifier_;
};
class MouseWheelEventArgs : public MouseEventArgs {
public:
MouseWheelEventArgs(Object* sender, Object* original_sender,
const Point& point, const float delta)
: MouseEventArgs(sender, original_sender, point), delta_(delta) {}
MouseWheelEventArgs(const MouseWheelEventArgs& other) = default;
MouseWheelEventArgs(MouseWheelEventArgs&& other) = default;
MouseWheelEventArgs& operator=(const MouseWheelEventArgs& other) = default;
MouseWheelEventArgs& operator=(MouseWheelEventArgs&& other) = default;
~MouseWheelEventArgs() override = default;
float GetDelta() const { return delta_; }
private:
float delta_;
};
class PaintEventArgs : public UiEventArgs {
public:
PaintEventArgs(Object* sender, Object* original_sender,
platform::graph::IPainter* painter)
: UiEventArgs(sender, original_sender), painter_(painter) {}
PaintEventArgs(const PaintEventArgs& other) = default;
PaintEventArgs(PaintEventArgs&& other) = default;
PaintEventArgs& operator=(const PaintEventArgs& other) = default;
PaintEventArgs& operator=(PaintEventArgs&& other) = default;
~PaintEventArgs() = default;
platform::graph::IPainter* GetPainter() const { return painter_; }
private:
platform::graph::IPainter* painter_;
};
class FocusChangeEventArgs : public UiEventArgs {
public:
FocusChangeEventArgs(Object* sender, Object* original_sender,
const bool is_window = false)
: UiEventArgs(sender, original_sender), is_window_(is_window) {}
FocusChangeEventArgs(const FocusChangeEventArgs& other) = default;
FocusChangeEventArgs(FocusChangeEventArgs&& other) = default;
FocusChangeEventArgs& operator=(const FocusChangeEventArgs& other) = default;
FocusChangeEventArgs& operator=(FocusChangeEventArgs&& other) = default;
~FocusChangeEventArgs() override = default;
// Return whether the focus change is caused by the window-wide focus change.
bool IsWindow() const { return is_window_; }
private:
bool is_window_;
};
/*
class ToggleEventArgs : public UiEventArgs {
public:
ToggleEventArgs(Object* sender, Object* original_sender, bool new_state)
: UiEventArgs(sender, original_sender), new_state_(new_state) {}
ToggleEventArgs(const ToggleEventArgs& other) = default;
ToggleEventArgs(ToggleEventArgs&& other) = default;
ToggleEventArgs& operator=(const ToggleEventArgs& other) = default;
ToggleEventArgs& operator=(ToggleEventArgs&& other) = default;
~ToggleEventArgs() override = default;
bool GetNewState() const { return new_state_; }
private:
bool new_state_;
};
*/
class KeyEventArgs : public UiEventArgs {
public:
KeyEventArgs(Object* sender, Object* original_sender,
platform::native::KeyCode key_code,
platform::native::KeyModifier key_modifier)
: UiEventArgs(sender, original_sender),
key_code_(key_code),
key_modifier_(key_modifier) {}
KeyEventArgs(const KeyEventArgs& other) = default;
KeyEventArgs(KeyEventArgs&& other) = default;
KeyEventArgs& operator=(const KeyEventArgs& other) = default;
KeyEventArgs& operator=(KeyEventArgs&& other) = default;
~KeyEventArgs() override = default;
platform::native::KeyCode GetKeyCode() const { return key_code_; }
platform::native::KeyModifier GetKeyModifier() const { return key_modifier_; }
private:
platform::native::KeyCode key_code_;
platform::native::KeyModifier key_modifier_;
};
class CharEventArgs : public UiEventArgs {
public:
CharEventArgs(Object* sender, Object* original_sender, std::string c)
: UiEventArgs(sender, original_sender), c_(std::move(c)) {}
CharEventArgs(const CharEventArgs& other) = default;
CharEventArgs(CharEventArgs&& other) = default;
CharEventArgs& operator=(const CharEventArgs& other) = default;
CharEventArgs& operator=(CharEventArgs&& other) = default;
~CharEventArgs() override = default;
std::string GetChar() const { return c_; }
private:
std::string c_;
};
} // namespace cru::ui::event
|
