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use AlphaBlt() when blitting to a bitmap with alpha channel too (patch 991166)
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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// and William Gallafent.
7// Modified by:
8// Created: 08.02.01
9// RCS-ID: $Id$
10// Copyright: (c) 2000 Johnny C. Norris II
11// License: Rocketeer license
12/////////////////////////////////////////////////////////////////////////////
13
14// ============================================================================
15// declatations
16// ============================================================================
17
18// ----------------------------------------------------------------------------
19// headers
20// ----------------------------------------------------------------------------
21
22#include "wx/wxprec.h"
23
24#ifdef __BORLANDC__
25 #pragma hdrstop
26#endif
27
28#include "wx/tglbtn.h"
29
30#if wxUSE_TOGGLEBTN
31
32#ifndef WX_PRECOMP
33 #include "wx/button.h"
34 #include "wx/brush.h"
35 #include "wx/dcscreen.h"
36 #include "wx/settings.h"
37
38 #include "wx/log.h"
39#endif // WX_PRECOMP
40
41#include "wx/msw/private.h"
42
43// ----------------------------------------------------------------------------
44// macros
45// ----------------------------------------------------------------------------
46
47IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
48DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED)
49
50#define BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10)
51
52// ============================================================================
53// implementation
54// ============================================================================
55
56// ----------------------------------------------------------------------------
57// wxToggleButton
58// ----------------------------------------------------------------------------
59
60bool wxToggleButton::MSWCommand(WXUINT WXUNUSED(param), WXWORD WXUNUSED(id))
61{
62 wxCommandEvent event(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, m_windowId);
63 event.SetInt(GetValue());
64 event.SetEventObject(this);
65 ProcessCommand(event);
66 return true;
67}
68
69// Single check box item
70bool wxToggleButton::Create(wxWindow *parent, wxWindowID id,
71 const wxString& label,
72 const wxPoint& pos,
73 const wxSize& size, long style,
74 const wxValidator& validator,
75 const wxString& name)
76{
77 if ( !CreateControl(parent, id, pos, size, style, validator, name) )
78 return false;
79
80 if ( !MSWCreateControl(wxT("BUTTON"), label, pos, size) )
81 return false;
82
83 return true;
84}
85
86wxBorder wxToggleButton::GetDefaultBorder() const
87{
88 return wxBORDER_NONE;
89}
90
91WXDWORD wxToggleButton::MSWGetStyle(long style, WXDWORD *exstyle) const
92{
93 WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
94
95#ifndef BS_PUSHLIKE
96#define BS_PUSHLIKE 0x00001000L
97#endif
98
99 msStyle |= BS_AUTOCHECKBOX | BS_PUSHLIKE | WS_TABSTOP;
100
101 if(style & wxBU_LEFT)
102 msStyle |= BS_LEFT;
103 if(style & wxBU_RIGHT)
104 msStyle |= BS_RIGHT;
105 if(style & wxBU_TOP)
106 msStyle |= BS_TOP;
107 if(style & wxBU_BOTTOM)
108 msStyle |= BS_BOTTOM;
109
110 return msStyle;
111}
112
113wxSize wxToggleButton::DoGetBestSize() const
114{
115 wxString label = wxGetWindowText(GetHWND());
116 int wBtn;
117 GetTextExtent(label, &wBtn, NULL);
118
119 int wChar, hChar;
120 wxGetCharSize(GetHWND(), &wChar, &hChar, GetFont());
121
122 // add a margin - the button is wider than just its label
123 wBtn += 3*wChar;
124
125 // the button height is proportional to the height of the font used
126 int hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar);
127
128#if wxUSE_BUTTON
129 wxSize sz = wxButton::GetDefaultSize();
130 if (wBtn > sz.x)
131 sz.x = wBtn;
132 if (hBtn > sz.y)
133 sz.y = hBtn;
134#else
135 wxSize sz(wBtn, hBtn);
136#endif
137
138 return sz;
139}
140
141void wxToggleButton::SetValue(bool val)
142{
143 ::SendMessage(GetHwnd(), BM_SETCHECK, val, 0);
144}
145
146#ifndef BST_CHECKED
147#define BST_CHECKED 0x0001
148#endif
149
150bool wxToggleButton::GetValue() const
151{
152#ifdef __WIN32__
153 return (::SendMessage(GetHwnd(), BM_GETCHECK, 0, 0) == BST_CHECKED);
154#else
155 return ((0x001 & ::SendMessage(GetHwnd(), BM_GETCHECK, 0, 0)) == 0x001);
156#endif
157}
158
159void wxToggleButton::Command(wxCommandEvent & event)
160{
161 SetValue((event.GetInt() != 0));
162 ProcessCommand(event);
163}
164
165#endif // wxUSE_TOGGLEBTN
166