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don't crash trying to draw buttons with invalid bitmaps (the real fix would be to...
[wxWidgets.git] / src / univ / bmpbuttn.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/univ/bmpbuttn.cpp
3 // Purpose: wxBitmapButton implementation
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 25.08.00
7 // RCS-ID: $Id$
8 // Copyright: (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 #include "wx/wxprec.h"
21
22 #ifdef __BORLANDC__
23 #pragma hdrstop
24 #endif
25
26 #if wxUSE_BMPBUTTON
27
28 #include "wx/bmpbuttn.h"
29
30 #ifndef WX_PRECOMP
31 #include "wx/dc.h"
32 #include "wx/validate.h"
33 #endif
34
35 #include "wx/univ/renderer.h"
36
37 // ============================================================================
38 // implementation
39 // ============================================================================
40
41 IMPLEMENT_DYNAMIC_CLASS(wxBitmapButton, wxButton)
42
43 BEGIN_EVENT_TABLE(wxBitmapButton, wxButton)
44 EVT_SET_FOCUS(wxBitmapButton::OnSetFocus)
45 EVT_KILL_FOCUS(wxBitmapButton::OnKillFocus)
46 END_EVENT_TABLE()
47
48 // ----------------------------------------------------------------------------
49 // wxBitmapButton
50 // ----------------------------------------------------------------------------
51
52 bool wxBitmapButton::Create(wxWindow *parent,
53 wxWindowID id,
54 const wxBitmap& bitmap,
55 const wxPoint &pos,
56 const wxSize &size,
57 long style,
58 const wxValidator& validator,
59 const wxString &name)
60 {
61 // we add wxBU_EXACTFIT because the bitmap buttons are not the standard
62 // ones and so shouldn't be forced to be of the standard size which is
63 // typically too big for them
64 if ( !wxButton::Create(parent, id, bitmap, wxEmptyString,
65 pos, size, style | wxBU_EXACTFIT, validator, name) )
66 return false;
67
68 m_bmpNormal = bitmap;
69
70 return true;
71 }
72
73 void wxBitmapButton::OnSetBitmap()
74 {
75 wxBitmap bmp;
76 if ( !IsEnabled() )
77 {
78 bmp = m_bmpDisabled;
79 }
80 else if ( IsPressed() )
81 {
82 bmp = m_bmpSelected;
83 }
84 else if ( IsFocused() )
85 {
86 bmp = m_bmpFocus;
87 }
88 else
89 {
90 bmp = m_bmpNormal;
91 }
92
93 ChangeBitmap(bmp);
94 }
95
96 bool wxBitmapButton::ChangeBitmap(const wxBitmap& bmp)
97 {
98 wxBitmap bitmap = bmp.Ok() ? bmp : m_bmpNormal;
99 if ( bitmap.IsSameAs(m_bitmap) )
100 return false;
101
102 m_bitmap = bitmap;
103
104 return true;
105 }
106
107 bool wxBitmapButton::Enable(bool enable)
108 {
109 if ( !wxButton::Enable(enable) )
110 return false;
111
112 if ( !enable && ChangeBitmap(m_bmpDisabled) )
113 Refresh();
114
115 return true;
116 }
117
118 bool wxBitmapButton::SetCurrent(bool doit)
119 {
120 ChangeBitmap(doit ? m_bmpFocus : m_bmpNormal);
121
122 return wxButton::SetCurrent(doit);
123 }
124
125 void wxBitmapButton::OnSetFocus(wxFocusEvent& event)
126 {
127 if ( ChangeBitmap(m_bmpFocus) )
128 Refresh();
129
130 event.Skip();
131 }
132
133 void wxBitmapButton::OnKillFocus(wxFocusEvent& event)
134 {
135 if ( ChangeBitmap(m_bmpNormal) )
136 Refresh();
137
138 event.Skip();
139 }
140
141 void wxBitmapButton::Press()
142 {
143 ChangeBitmap(m_bmpSelected);
144
145 wxButton::Press();
146 }
147
148 void wxBitmapButton::Release()
149 {
150 ChangeBitmap(IsFocused() ? m_bmpFocus : m_bmpNormal);
151
152 wxButton::Release();
153 }
154
155 #endif // wxUSE_BMPBUTTON