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1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: univ/theme.cpp
3 // Purpose: implementation of wxTheme
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 06.08.00
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 // For compilers that support precompilation, includes "wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #ifndef WX_PRECOMP
28 #include "wx/intl.h"
29 #include "wx/log.h"
30 #endif // WX_PRECOMP
31
32 #include "wx/artprov.h"
33
34 #include "wx/univ/renderer.h"
35 #include "wx/univ/inphand.h"
36 #include "wx/univ/theme.h"
37
38 // ============================================================================
39 // implementation
40 // ============================================================================
41
42 wxThemeInfo *wxTheme::ms_allThemes = NULL;
43 wxTheme *wxTheme::ms_theme = NULL;
44
45 // ----------------------------------------------------------------------------
46 // "dynamic" theme creation
47 // ----------------------------------------------------------------------------
48
49 wxThemeInfo::wxThemeInfo(Constructor c,
50 const wxString& n,
51 const wxString& d)
52 : name(n), desc(d), ctor(c)
53 {
54 // insert us (in the head of) the linked list
55 next = wxTheme::ms_allThemes;
56 wxTheme::ms_allThemes = this;
57 }
58
59 /* static */ wxTheme *wxTheme::Create(const wxString& name)
60 {
61 // find the theme in the list by name
62 wxThemeInfo *info = ms_allThemes;
63 while ( info )
64 {
65 if ( name.CmpNoCase(info->name) == 0 )
66 {
67 return info->ctor();
68 }
69
70 info = info->next;
71 }
72
73 return NULL;
74 }
75
76 // ----------------------------------------------------------------------------
77 // the default theme (called by wxApp::OnInitGui)
78 // ----------------------------------------------------------------------------
79
80 /* static */ bool wxTheme::CreateDefault()
81 {
82 if ( ms_theme )
83 {
84 // we already have a theme
85 return true;
86 }
87
88 wxString nameDefTheme;
89
90 // use the environment variable first
91 const wxChar *p = wxGetenv(wxT("WXTHEME"));
92 if ( p )
93 {
94 nameDefTheme = p;
95 }
96 #ifdef wxUNIV_DEFAULT_THEME
97 else // use native theme by default
98 {
99 nameDefTheme = wxSTRINGIZE_T(wxUNIV_DEFAULT_THEME);
100 }
101 #endif // wxUNIV_DEFAULT_THEME
102
103 wxTheme *theme = Create(nameDefTheme);
104
105 // fallback to the first one in the list
106 if ( !theme && ms_allThemes )
107 {
108 theme = ms_allThemes->ctor();
109 }
110
111 // abort if still nothing
112 if ( !theme )
113 {
114 wxLogError(_("Failed to initialize GUI: no built-in themes found."));
115
116 return false;
117 }
118
119 // Set the theme as current.
120 wxTheme::Set(theme);
121
122 return true;
123 }
124
125 /* static */ wxTheme *wxTheme::Set(wxTheme *theme)
126 {
127 wxTheme *themeOld = ms_theme;
128 ms_theme = theme;
129
130 if ( ms_theme )
131 {
132 // automatically start using the art provider of the new theme if it
133 // has one
134 wxArtProvider *art = ms_theme->GetArtProvider();
135 if ( art )
136 wxArtProvider::Push(art);
137 }
138
139 return themeOld;
140 }
141
142 // ----------------------------------------------------------------------------
143 // assorted trivial dtors
144 // ----------------------------------------------------------------------------
145
146 wxTheme::~wxTheme()
147 {
148 }
149
150
151 // ----------------------------------------------------------------------------
152 // wxDelegateTheme
153 // ----------------------------------------------------------------------------
154
155 wxDelegateTheme::wxDelegateTheme(const wxString& theme)
156 {
157 m_themeName = theme;
158 m_theme = NULL;
159 }
160
161 wxDelegateTheme::~wxDelegateTheme()
162 {
163 delete m_theme;
164 }
165
166 bool wxDelegateTheme::GetOrCreateTheme()
167 {
168 if ( !m_theme )
169 m_theme = wxTheme::Create(m_themeName);
170 return m_theme != NULL;
171 }
172
173 wxRenderer *wxDelegateTheme::GetRenderer()
174 {
175 if ( !GetOrCreateTheme() )
176 return NULL;
177
178 return m_theme->GetRenderer();
179 }
180
181 wxArtProvider *wxDelegateTheme::GetArtProvider()
182 {
183 if ( !GetOrCreateTheme() )
184 return NULL;
185
186 return m_theme->GetArtProvider();
187 }
188
189 wxInputHandler *wxDelegateTheme::GetInputHandler(const wxString& control,
190 wxInputConsumer *consumer)
191 {
192 if ( !GetOrCreateTheme() )
193 return NULL;
194
195 return m_theme->GetInputHandler(control, consumer);
196 }
197
198 wxColourScheme *wxDelegateTheme::GetColourScheme()
199 {
200 if ( !GetOrCreateTheme() )
201 return NULL;
202
203 return m_theme->GetColourScheme();
204 }