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
|
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/views/radio_button.h"
#include "chrome/views/label.h"
#include "chrome/views/hwnd_view.h"
#include "chrome/views/widget/root_view.h"
namespace views {
// FIXME(ACW) there got be a better way to find out the check box sizes
static int kRadioWidth = 13;
static int kRadioHeight = 13;
static int kRadioToLabel = 4;
const char RadioButton::kViewClassName[] = "chrome/views/RadioButton";
RadioButton::RadioButton(const std::wstring& label, int group_id)
: CheckBox(label) {
SetGroup(group_id);
}
RadioButton::~RadioButton() {
}
HWND RadioButton::CreateNativeControl(HWND parent_container) {
HWND r = ::CreateWindowEx(GetAdditionalExStyle(),
L"BUTTON",
L"",
WS_CHILD | BS_RADIOBUTTON ,
0, 0, width(), height(),
parent_container, NULL, NULL, NULL);
ConfigureNativeButton(r);
return r;
}
LRESULT RadioButton::OnCommand(UINT code, int id, HWND source) {
// Radio buttons can't be toggled off once selected except by clicking on
// another radio button within the same group, so we override this from
// CheckBox to prevent this from happening.
if (code == BN_CLICKED) {
RequestFocus();
if (!IsSelected()) {
SetIsSelected(true);
return NativeButton::OnCommand(code, id, source);
}
}
return 0;
}
// static
int RadioButton::GetTextIndent() {
return kRadioWidth + kRadioToLabel + kFocusPaddingHorizontal;
}
std::string RadioButton::GetClassName() const {
return kViewClassName;
}
gfx::Size RadioButton::GetPreferredSize() {
gfx::Size prefsize = label_->GetPreferredSize();
prefsize.set_height(std::max(prefsize.height() + kFocusPaddingVertical * 2,
kRadioHeight));
prefsize.Enlarge(kRadioToLabel + kRadioWidth + kFocusPaddingHorizontal * 2,
0);
return prefsize;
}
void RadioButton::Layout() {
int label_x = GetTextIndent();
label_->SetBounds(label_x, 0, width() - label_x, height());
if (hwnd_view_) {
int first_line_height = label_->GetFont().height();
hwnd_view_->SetBounds(0, ((first_line_height - kRadioHeight) / 2) + 1,
kRadioWidth, kRadioHeight);
hwnd_view_->UpdateHWNDBounds();
}
}
void RadioButton::SetIsSelected(bool f) {
if (f != IsSelected()) {
if (f) {
// We can't just get the root view here because sometimes the radio
// button isn't attached to a root view (e.g., if it's part of a tab page
// that is currently not active).
View* container = GetParent();
while (container && container->GetParent())
container = container->GetParent();
if (container) {
std::vector<View*> other;
container->GetViewsWithGroup(GetGroup(), &other);
std::vector<View*>::iterator i;
for (i = other.begin(); i != other.end(); ++i) {
if (*i != this) {
RadioButton* peer = static_cast<RadioButton*>(*i);
peer->SetIsSelected(false);
}
}
}
}
CheckBox::SetIsSelected(f);
}
}
View* RadioButton::GetSelectedViewForGroup(int group_id) {
std::vector<View*> views;
GetRootView()->GetViewsWithGroup(group_id, &views);
if (views.empty())
return NULL;
for (std::vector<View*>::const_iterator iter = views.begin();
iter != views.end(); ++iter) {
RadioButton* radio_button = static_cast<RadioButton*>(*iter);
if (radio_button->IsSelected())
return radio_button;
}
return NULL;
}
} // namespace views
|
