/////////////////////////////////////////////////////////////////////////////
// Name: src/msw/glcanvas.cpp
-// Purpose: wxGLCanvas, for using OpenGL with wxWindows under MS Windows
+// Purpose: wxGLCanvas, for using OpenGL with wxWidgets under MS Windows
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
#include "wx/app.h"
#endif
+#include "wx/module.h"
+
#include "wx/msw/private.h"
// DLL options compatibility check:
these two libraries to either the Makefile or project file.
This is NOT a recommended technique, and certainly is unlikely to be used
- anywhere else in wxWindows given it is so specific to not only wxMSW, but
+ anywhere else in wxWidgets given it is so specific to not only wxMSW, but
also the VC compiler. However, in the case of opengl support, it's an
applicable technique as opengl is optional in setup.h This code (wrapped by
wxUSE_GLCANVAS), now allows opengl support to be added purely by modifying
LRESULT WXDLLEXPORT APIENTRY _EXPORT wxWndProc(HWND hWnd, UINT message,
WPARAM wParam, LPARAM lParam);
+// ----------------------------------------------------------------------------
+// wxGLModule is responsible for unregistering wxGLCanvasClass Windows class
+// ----------------------------------------------------------------------------
+
+class wxGLModule : public wxModule
+{
+public:
+ bool OnInit() { return true; }
+ void OnExit() { UnregisterClasses(); }
+
+ // register the GL classes if not done yet, return true if ok, false if
+ // registration failed
+ static bool RegisterClasses();
+
+ // unregister the classes, done automatically on program termination
+ static void UnregisterClasses();
+
+private:
+ // wxGLCanvas is only used from the main thread so this is MT-ok
+ static bool ms_registeredGLClasses;
+
+ DECLARE_DYNAMIC_CLASS(wxGLModule)
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxGLModule, wxModule)
+
+bool wxGLModule::ms_registeredGLClasses = false;
+
+/* static */
+bool wxGLModule::RegisterClasses()
+{
+ if (ms_registeredGLClasses)
+ return true;
+
+ // We have to register a special window class because we need the CS_OWNDC
+ // style for GLCanvas.
+
+ /*
+ From Angel Popov <jumpo@bitex.com>
+
+ Here are two snips from a dicussion in the OpenGL Gamedev list that explains
+ how this problem can be fixed:
+
+ "There are 5 common DCs available in Win95. These are aquired when you call
+ GetDC or GetDCEx from a window that does _not_ have the OWNDC flag.
+ OWNDC flagged windows do not get their DC from the common DC pool, the issue
+ is they require 800 bytes each from the limited 64Kb local heap for GDI."
+
+ "The deal is, if you hold onto one of the 5 shared DC's too long (as GL apps
+ do), Win95 will actually "steal" it from you. MakeCurrent fails,
+ apparently, because Windows re-assigns the HDC to a different window. The
+ only way to prevent this, the only reliable means, is to set CS_OWNDC."
+ */
+
+ WNDCLASS wndclass;
+
+ // the fields which are common to all classes
+ wndclass.lpfnWndProc = (WNDPROC)wxWndProc;
+ wndclass.cbClsExtra = 0;
+ wndclass.cbWndExtra = sizeof( DWORD ); // VZ: what is this DWORD used for?
+ wndclass.hInstance = wxhInstance;
+ wndclass.hIcon = (HICON) NULL;
+ wndclass.hCursor = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
+ wndclass.lpszMenuName = NULL;
+
+ // Register the GLCanvas class name
+ wndclass.hbrBackground = (HBRUSH)NULL;
+ wndclass.lpszClassName = wxGLCanvasClassName;
+ wndclass.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | CS_OWNDC;
+
+ if ( !::RegisterClass(&wndclass) )
+ {
+ wxLogLastError(wxT("RegisterClass(wxGLCanvasClass)"));
+ return false;
+ }
+
+ // Register the GLCanvas class name for windows which don't do full repaint
+ // on resize
+ wndclass.lpszClassName = wxGLCanvasClassNameNoRedraw;
+ wndclass.style &= ~(CS_HREDRAW | CS_VREDRAW);
+
+ if ( !::RegisterClass(&wndclass) )
+ {
+ wxLogLastError(wxT("RegisterClass(wxGLCanvasClassNameNoRedraw)"));
+
+ ::UnregisterClass(wxGLCanvasClassName, wxhInstance);
+
+ return false;
+ }
+
+ ms_registeredGLClasses = true;
+
+ return true;
+}
+
+/* static */
+void wxGLModule::UnregisterClasses()
+{
+ // we need to unregister the classes in case we're in a DLL which is
+ // unloaded and then loaded again because if we don't, the registration is
+ // going to fail in wxGLCanvas::Create() the next time we're loaded
+ if ( ms_registeredGLClasses )
+ {
+ ::UnregisterClass(wxGLCanvasClassName, wxhInstance);
+ ::UnregisterClass(wxGLCanvasClassNameNoRedraw, wxhInstance);
+
+ ms_registeredGLClasses = false;
+ }
+}
+
/*
* GLContext implementation
*/
m_hDC = win->GetHDC();
m_glContext = wglCreateContext((HDC) m_hDC);
- wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGl context") );
+ wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGL context") );
wglMakeCurrent((HDC) m_hDC, m_glContext);
}
m_hDC = win->GetHDC();
m_glContext = wglCreateContext((HDC) m_hDC);
- wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGl context") );
+ wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGL context") );
if( other != 0 )
wglShareLists( other->m_glContext, m_glContext );
void wxGLContext::SetColour(const wxChar *colour)
{
- float r = 0.0;
- float g = 0.0;
- float b = 0.0;
- wxColour *col = wxTheColourDatabase->FindColour(colour);
- if (col)
- {
- r = (float)(col->Red()/256.0);
- g = (float)(col->Green()/256.0);
- b = (float)(col->Blue()/256.0);
- glColor3f( r, g, b);
- }
+ wxColour col = wxTheColourDatabase->Find(colour);
+ if (col.Ok())
+ {
+ float r = (float)(col.Red()/256.0);
+ float g = (float)(col.Green()/256.0);
+ float b = (float)(col.Blue()/256.0);
+ glColor3f( r, g, b);
+ }
}
if ( ret )
{
SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
- SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
}
m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
SetupPixelFormat(attribList);
SetupPalette(palette);
- m_glContext = new wxGLContext(TRUE, this, palette);
+ m_glContext = new wxGLContext(true, this, palette);
}
wxGLCanvas::wxGLCanvas( wxWindow *parent,
if ( ret )
{
SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
- SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
}
m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
SetupPixelFormat(attribList);
SetupPalette(palette);
- m_glContext = new wxGLContext(TRUE, this, palette, shared );
+ m_glContext = new wxGLContext(true, this, palette, shared );
}
// Not very useful for wxMSW, but this is to be wxGTK compliant
if ( ret )
{
SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
- SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
}
m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
wxGLContext *sharedContext=0;
if (shared) sharedContext=shared->GetContext();
- m_glContext = new wxGLContext(TRUE, this, palette, sharedContext );
+ m_glContext = new wxGLContext(true, this, palette, sharedContext );
}
wxGLCanvas::~wxGLCanvas()
{
- if (m_glContext)
- delete m_glContext;
+ delete m_glContext;
::ReleaseDC((HWND) GetHWND(), (HDC) m_hDC);
}
long style,
const wxString& name)
{
- static bool s_registeredGLCanvasClass = FALSE;
-
- // We have to register a special window class because we need
- // the CS_OWNDC style for GLCanvas.
-
- /*
- From Angel Popov <jumpo@bitex.com>
-
- Here are two snips from a dicussion in the OpenGL Gamedev list that explains
- how this problem can be fixed:
-
- "There are 5 common DCs available in Win95. These are aquired when you call
- GetDC or GetDCEx from a window that does _not_ have the OWNDC flag.
- OWNDC flagged windows do not get their DC from the common DC pool, the issue
- is they require 800 bytes each from the limited 64Kb local heap for GDI."
-
- "The deal is, if you hold onto one of the 5 shared DC's too long (as GL apps
- do), Win95 will actually "steal" it from you. MakeCurrent fails,
- apparently, because Windows re-assigns the HDC to a different window. The
- only way to prevent this, the only reliable means, is to set CS_OWNDC."
- */
-
- if (!s_registeredGLCanvasClass)
- {
- WNDCLASS wndclass;
+ wxCHECK_MSG( parent, false, wxT("can't create wxWindow without parent") );
- // the fields which are common to all classes
- wndclass.lpfnWndProc = (WNDPROC)wxWndProc;
- wndclass.cbClsExtra = 0;
- wndclass.cbWndExtra = sizeof( DWORD ); // VZ: what is this DWORD used for?
- wndclass.hInstance = wxhInstance;
- wndclass.hIcon = (HICON) NULL;
- wndclass.hCursor = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
- wndclass.lpszMenuName = NULL;
-
- // Register the GLCanvas class name
- wndclass.hbrBackground = (HBRUSH)NULL;
- wndclass.lpszClassName = wxGLCanvasClassName;
- wndclass.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | CS_OWNDC;
-
- if ( !::RegisterClass(&wndclass) )
- {
- wxLogLastError(wxT("RegisterClass(wxGLCanvasClass)"));
- return FALSE;
- }
-
- // Register the GLCanvas class name for windows which don't do full repaint
- // on resize
- wndclass.lpszClassName = wxGLCanvasClassNameNoRedraw;
- wndclass.style &= ~(CS_HREDRAW | CS_VREDRAW);
-
- if ( !::RegisterClass(&wndclass) )
+ if ( !wxGLModule::RegisterClasses() )
{
- wxLogLastError(wxT("RegisterClass(wxGLCanvasClassNameNoRedraw)"));
-
- ::UnregisterClass(wxGLCanvasClassName, wxhInstance);
+ wxLogError(_("Failed to register OpenGL window class."));
- return FALSE;
+ return false;
}
- s_registeredGLCanvasClass = TRUE;
- }
-
- wxCHECK_MSG( parent, FALSE, wxT("can't create wxWindow without parent") );
-
- if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
- return FALSE;
+ if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
+ return false;
- parent->AddChild(this);
+ parent->AddChild(this);
- DWORD msflags = 0;
+ DWORD msflags = 0;
- /*
- A general rule with OpenGL and Win32 is that any window that will have a
- HGLRC built for it must have two flags: WS_CLIPCHILDREN & WS_CLIPSIBLINGS.
- You can find references about this within the knowledge base and most OpenGL
- books that contain the wgl function descriptions.
- */
+ /*
+ A general rule with OpenGL and Win32 is that any window that will have a
+ HGLRC built for it must have two flags: WS_CLIPCHILDREN & WS_CLIPSIBLINGS.
+ You can find references about this within the knowledge base and most OpenGL
+ books that contain the wgl function descriptions.
+ */
- WXDWORD exStyle = 0;
- msflags |= WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
- msflags |= MSWGetStyle(style, & exStyle) ;
+ WXDWORD exStyle = 0;
+ msflags |= WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
+ msflags |= MSWGetStyle(style, & exStyle) ;
- return MSWCreate(wxGLCanvasClassName, NULL, pos, size, msflags, exStyle);
+ return MSWCreate(wxGLCanvasClassName, NULL, pos, size, msflags, exStyle);
}
static void AdjustPFDForAttributes(PIXELFORMATDESCRIPTOR& pfd, int *attribList)
if (m_palette.Ok())
{
- SelectPalette((HDC) m_hDC, (HPALETTE) m_palette.GetHPALETTE(), FALSE);
- RealizePalette((HDC) m_hDC);
+ ::SelectPalette((HDC) m_hDC, (HPALETTE) m_palette.GetHPALETTE(), FALSE);
+ ::RealizePalette((HDC) m_hDC);
}
}
::SelectPalette((HDC) GetHDC(), (HPALETTE) GetPalette()->GetHPALETTE(), FALSE);
::RealizePalette((HDC) GetHDC());
Refresh();
- event.SetPaletteRealized(TRUE);
+ event.SetPaletteRealized(true);
}
else
- event.SetPaletteRealized(FALSE);
+ event.SetPaletteRealized(false);
}
// I think this doesn't have to be propagated to child windows.
if (pixelFormat == 0) {
wxLogError(_("Failed to initialize OpenGL"));
- return FALSE;
+ return false;
}
- return TRUE;
+ return true;
}
wxGLApp::~wxGLApp()
projects / wxWidgets.git / blobdiff