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dc3065a5 VZ |
1 | /////////////////////////////////////////////////////////////////////////////// |
2 | // Name: src/common/glcmn.cpp | |
3 | // Purpose: wxGLCanvasBase implementation | |
4 | // Author: Vadim Zeitlin | |
5 | // Created: 2007-04-09 | |
6 | // RCS-ID: $Id$ | |
7 | // Copyright: (c) 2007 Vadim Zeitlin <vadim@wxwindows.org> | |
8 | // Licence: wxWindows licence | |
9 | /////////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | // ============================================================================ | |
12 | // declarations | |
13 | // ============================================================================ | |
14 | ||
15 | // ---------------------------------------------------------------------------- | |
16 | // headers | |
17 | // ---------------------------------------------------------------------------- | |
18 | ||
19 | // for compilers that support precompilation, includes "wx.h". | |
20 | #include "wx/wxprec.h" | |
21 | ||
22 | #ifdef __BORLANDC__ | |
23 | #pragma hdrstop | |
24 | #endif | |
25 | ||
26 | #if wxUSE_GLCANVAS | |
27 | ||
28 | #ifndef WX_PRECOMP | |
29 | #include "wx/log.h" | |
30 | #endif // WX_PRECOMP | |
31 | ||
32 | #include "wx/glcanvas.h" | |
33 | ||
34 | // DLL options compatibility check: | |
35 | #include "wx/build.h" | |
36 | WX_CHECK_BUILD_OPTIONS("wxGL") | |
37 | ||
38 | IMPLEMENT_CLASS(wxGLApp, wxApp) | |
39 | ||
40 | // ============================================================================ | |
41 | // implementation | |
42 | // ============================================================================ | |
43 | ||
15b239c0 VZ |
44 | wxGLCanvasBase::wxGLCanvasBase() |
45 | { | |
46 | #if WXWIN_COMPATIBILITY_2_8 | |
47 | m_glContext = NULL; | |
48 | #endif | |
49 | ||
50 | // we always paint background entirely ourselves so prevent wx from erasing | |
51 | // it to avoid flicker | |
52 | SetBackgroundStyle(wxBG_STYLE_CUSTOM); | |
53 | } | |
54 | ||
5ec69e96 | 55 | bool wxGLCanvasBase::SetCurrent(const wxGLContext& context) const |
dc3065a5 VZ |
56 | { |
57 | // although on MSW it works even if the window is still hidden, it doesn't | |
58 | // work in other ports (notably X11-based ones) and documentation mentions | |
59 | // that SetCurrent() can only be called for a shown window, so check for it | |
9a83f860 | 60 | wxASSERT_MSG( IsShownOnScreen(), wxT("can't make hidden GL canvas current") ); |
dc3065a5 | 61 | |
5c33522f | 62 | return context.SetCurrent(*static_cast<const wxGLCanvas *>(this)); |
dc3065a5 VZ |
63 | } |
64 | ||
03647350 | 65 | #ifndef wxHAS_OPENGL_ES |
35f1f4f7 | 66 | bool wxGLCanvasBase::SetColour(const wxString& colour) |
dc3065a5 VZ |
67 | { |
68 | wxColour col = wxTheColourDatabase->Find(colour); | |
69 | if ( !col.Ok() ) | |
70 | return false; | |
71 | ||
72 | GLboolean isRGBA; | |
73 | glGetBooleanv(GL_RGBA_MODE, &isRGBA); | |
74 | if ( isRGBA ) | |
75 | { | |
76 | glColor3f(col.Red() / 256., col.Green() / 256., col.Blue() / 256.); | |
77 | } | |
78 | else // indexed colour | |
79 | { | |
80 | GLint pix = GetColourIndex(col); | |
81 | if ( pix == -1 ) | |
82 | { | |
83 | wxLogError(_("Failed to allocate colour for OpenGL")); | |
84 | return false; | |
85 | } | |
86 | ||
87 | glIndexi(pix); | |
88 | } | |
89 | ||
90 | return true; | |
91 | } | |
04ce16a8 | 92 | #endif |
dc3065a5 VZ |
93 | |
94 | wxGLCanvasBase::~wxGLCanvasBase() | |
95 | { | |
96 | #if WXWIN_COMPATIBILITY_2_8 | |
97 | delete m_glContext; | |
98 | #endif // WXWIN_COMPATIBILITY_2_8 | |
99 | } | |
100 | ||
101 | #if WXWIN_COMPATIBILITY_2_8 | |
102 | ||
103 | wxGLContext *wxGLCanvasBase::GetContext() const | |
104 | { | |
105 | return m_glContext; | |
106 | } | |
107 | ||
108 | void wxGLCanvasBase::SetCurrent() | |
109 | { | |
110 | if ( m_glContext ) | |
111 | SetCurrent(*m_glContext); | |
112 | } | |
113 | ||
114 | void wxGLCanvasBase::OnSize(wxSizeEvent& WXUNUSED(event)) | |
115 | { | |
116 | } | |
117 | ||
118 | #endif // WXWIN_COMPATIBILITY_2_8 | |
119 | ||
c39d2e0a VZ |
120 | /* static */ |
121 | bool wxGLCanvasBase::IsExtensionInList(const char *list, const char *extension) | |
122 | { | |
442e842e VZ |
123 | if ( !list ) |
124 | return false; | |
125 | ||
c39d2e0a VZ |
126 | for ( const char *p = list; *p; p++ ) |
127 | { | |
128 | // advance up to the next possible match | |
129 | p = wxStrstr(p, extension); | |
130 | if ( !p ) | |
131 | break; | |
132 | ||
133 | // check that the extension appears at the beginning/ending of the list | |
134 | // or is preceded/followed by a space to avoid mistakenly finding | |
135 | // "glExtension" in a list containing some "glFunkyglExtension" | |
136 | if ( (p == list || p[-1] == ' ') ) | |
137 | { | |
138 | char c = p[strlen(extension)]; | |
139 | if ( c == '\0' || c == ' ' ) | |
140 | return true; | |
141 | } | |
142 | } | |
143 | ||
144 | return false; | |
145 | } | |
146 | ||
dc3065a5 VZ |
147 | #endif // wxUSE_GLCANVAS |
148 |