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[wxWidgets.git] / src / msw / tglbtn.cpp
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1/////////////////////////////////////////////////////////////////////////////
2// Name: src/msw/tglbtn.cpp
3// Purpose: Definition of the wxToggleButton class, which implements a
4// toggle button under wxMSW.
5// Author: John Norris, minor changes by Axel Schlueter
6// Modified by:
7// Created: 08.02.01
8// RCS-ID: $Id$
9// Copyright: (c) 2000 Johnny C. Norris II
10// License: Rocketeer license
11/////////////////////////////////////////////////////////////////////////////
12
13// ============================================================================
14// declatations
15// ============================================================================
16
17// ----------------------------------------------------------------------------
18// headers
19// ----------------------------------------------------------------------------
20
21#include "wx/wxprec.h"
22
23#ifdef __BORLANDC__
24 #pragma hdrstop
25#endif
26
27#include "wx/tglbtn.h"
28
29#if wxUSE_TOGGLEBTN
30
31#ifndef WX_PRECOMP
32 #include "wx/button.h"
33 #include "wx/brush.h"
34 #include "wx/dcscreen.h"
35 #include "wx/settings.h"
36
37 #include "wx/log.h"
38#endif // WX_PRECOMP
39
40#include "wx/msw/private.h"
41
42// ----------------------------------------------------------------------------
43// macros
44// ----------------------------------------------------------------------------
45
46IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
47DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED)
48
49#define BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10)
50
51// ============================================================================
52// implementation
53// ============================================================================
54
55// ----------------------------------------------------------------------------
56// wxToggleButton
57// ----------------------------------------------------------------------------
58
59bool wxToggleButton::MSWCommand(WXUINT WXUNUSED(param), WXWORD WXUNUSED(id))
60{
61 wxCommandEvent event(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, m_windowId);
62 event.SetInt(GetValue());
63 event.SetEventObject(this);
64 ProcessCommand(event);
65 return TRUE;
66}
67
68// Single check box item
69bool wxToggleButton::Create(wxWindow *parent, wxWindowID id,
70 const wxString& label,
71 const wxPoint& pos,
72 const wxSize& size, long style,
73 const wxValidator& validator,
74 const wxString& name)
75{
76 if (!CreateBase(parent, id, pos, size, style, validator, name))
77 return FALSE;
78
79 parent->AddChild(this);
80
81 m_backgroundColour = parent->GetBackgroundColour();
82 m_foregroundColour = parent->GetForegroundColour();
83
84 long msStyle = BS_AUTOCHECKBOX | BS_PUSHLIKE | WS_TABSTOP | WS_CHILD | WS_VISIBLE;
85#ifdef __WIN32__
86 if(m_windowStyle & wxBU_LEFT)
87 msStyle |= BS_LEFT;
88 if(m_windowStyle & wxBU_RIGHT)
89 msStyle |= BS_RIGHT;
90 if(m_windowStyle & wxBU_TOP)
91 msStyle |= BS_TOP;
92 if(m_windowStyle & wxBU_BOTTOM)
93 msStyle |= BS_BOTTOM;
94#endif
95
96 m_hWnd = (WXHWND)CreateWindowEx(MakeExtendedStyle(m_windowStyle),
97 wxT("BUTTON"), label,
98 msStyle, 0, 0, 0, 0,
99 (HWND)parent->GetHWND(),
100 (HMENU)m_windowId,
101 wxGetInstance(), NULL);
102
103 if ( m_hWnd == 0 )
104 {
105 wxLogError(_T("Failed to create a toggle button"));
106
107 return FALSE;
108 }
109
110 // Subclass again for purposes of dialog editing mode
111 SubclassWin(m_hWnd);
112
113 SetFont(parent->GetFont());
114
115 SetSize(pos.x, pos.y, size.x, size.y);
116
117 return TRUE;
118}
119
120void wxToggleButton::SetLabel(const wxString& label)
121{
122 SetWindowText(GetHwnd(), label);
123}
124
125wxSize wxToggleButton::DoGetBestSize() const
126{
127 wxString label = wxGetWindowText(GetHWND());
128 int wBtn;
129 GetTextExtent(label, &wBtn, NULL);
130
131 int wChar, hChar;
132 wxGetCharSize(GetHWND(), &wChar, &hChar, &GetFont());
133
134 // add a margin - the button is wider than just its label
135 wBtn += 3*wChar;
136
137 // the button height is proportional to the height of the font used
138 int hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar);
139
140 wxSize sz = wxButton::GetDefaultSize();
141 if (wBtn > sz.x)
142 sz.x = wBtn;
143 if (hBtn > sz.y)
144 sz.y = hBtn;
145
146 return sz;
147}
148
149void wxToggleButton::SetValue(bool val)
150{
151 SendMessage(GetHwnd(), BM_SETCHECK, val, 0);
152}
153
154#ifndef BST_CHECKED
155#define BST_CHECKED 0x0001
156#endif
157
158bool wxToggleButton::GetValue() const
159{
160#ifdef __WIN32__
161 return (SendMessage(GetHwnd(), BM_GETCHECK, 0, 0) == BST_CHECKED);
162#else
163 return ((0x001 & SendMessage(GetHwnd(), BM_GETCHECK, 0, 0)) == 0x001);
164#endif
165}
166
167void wxToggleButton::Command(wxCommandEvent & event)
168{
169 SetValue((event.GetInt() != 0));
170 ProcessCommand(event);
171}
172
173#endif // wxUSE_TOGGLEBTN
174