blob: cd1367fe8d5db1e05b410833df72e24f84c15083 (
plain)
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
|
#include "cru/ui/Control.hpp"
#include "cru/platform/native/Cursor.hpp"
#include "cru/platform/native/UiApplication.hpp"
#include "cru/ui/Base.hpp"
#include "cru/ui/UiHost.hpp"
#include "RoutedEventDispatch.hpp"
#include <memory>
namespace cru::ui {
using platform::native::ICursor;
using platform::native::IUiApplication;
using platform::native::SystemCursorType;
Control::Control() {
MouseEnterEvent()->Direct()->AddHandler([this](event::MouseEventArgs&) {
this->is_mouse_over_ = true;
this->OnMouseHoverChange(true);
});
MouseLeaveEvent()->Direct()->AddHandler([this](event::MouseEventArgs&) {
this->is_mouse_over_ = false;
this->OnMouseHoverChange(true);
});
}
void Control::_SetParent(Control* parent) {
const auto old_parent = GetParent();
parent_ = parent;
const auto new_parent = GetParent();
if (old_parent != new_parent) OnParentChanged(old_parent, new_parent);
}
void Control::_SetDescendantUiHost(UiHost* host) {
if (host == nullptr && ui_host_ == nullptr) return;
// You can only attach or detach window.
Expects((host != nullptr && ui_host_ == nullptr) ||
(host == nullptr && ui_host_ != nullptr));
if (host == nullptr) {
const auto old = ui_host_;
TraverseDescendants([old](Control* control) {
control->ui_host_ = nullptr;
control->OnDetachFromHost(old);
});
} else
TraverseDescendants([host](Control* control) {
control->ui_host_ = host;
control->OnAttachToHost(host);
});
}
void Control::TraverseDescendants(
const std::function<void(Control*)>& predicate) {
_TraverseDescendants(this, predicate);
}
void Control::_TraverseDescendants(
Control* control, const std::function<void(Control*)>& predicate) {
predicate(control);
for (auto c : control->GetChildren()) _TraverseDescendants(c, predicate);
}
bool Control::RequestFocus() {
auto host = GetUiHost();
if (host == nullptr) return false;
return host->RequestFocusFor(this);
}
bool Control::HasFocus() {
auto host = GetUiHost();
if (host == nullptr) return false;
return host->GetFocusControl() == this;
}
bool Control::CaptureMouse() {
auto host = GetUiHost();
if (host == nullptr) return false;
return host->CaptureMouseFor(this);
}
bool Control::ReleaseMouse() {
auto host = GetUiHost();
if (host == nullptr) return false;
return host->CaptureMouseFor(nullptr);
}
bool Control::IsMouseCaptured() {
auto host = GetUiHost();
if (host == nullptr) return false;
return host->GetMouseCaptureControl() == this;
}
std::shared_ptr<ICursor> Control::GetCursor() { return cursor_; }
std::shared_ptr<ICursor> Control::GetInheritedCursor() {
Control* control = this;
while (control != nullptr) {
const auto cursor = control->GetCursor();
if (cursor != nullptr) return cursor;
control = control->GetParent();
}
return IUiApplication::GetInstance()->GetCursorManager()->GetSystemCursor(
SystemCursorType::Arrow);
}
void Control::SetCursor(std::shared_ptr<ICursor> cursor) {
cursor_ = std::move(cursor);
const auto host = GetUiHost();
if (host != nullptr) {
host->UpdateCursor();
}
}
void Control::OnParentChanged(Control* old_parent, Control* new_parent) {
CRU_UNUSED(old_parent)
CRU_UNUSED(new_parent)
}
void Control::OnAttachToHost(UiHost* host) { CRU_UNUSED(host) }
void Control::OnDetachFromHost(UiHost* host) { CRU_UNUSED(host) }
} // namespace cru::ui
|
