GTK's toolbar class has no OnPaint

[wxWidgets.git] / utils / glcanvas / src / glcanvas.cpp

diff --git a/utils/glcanvas/src/glcanvas.cpp b/utils/glcanvas/src/glcanvas.cpp
new file mode 100644 (file)
index 0000000..44f28e7
--- /dev/null
+++ b/utils/glcanvas/src/glcanvas.cpp
@@ -0,0 +1,161 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        glcanvas.cpp
+// Purpose:     wxGLCanvas, for using OpenGL/Mesa with wxWindows and GTK
+// Author:      Robert Roebling
+// Modified by:
+// Created:     17/08/98
+// RCS-ID:      $Id$
+// Copyright:   (c) Robert Roebling
+// Licence:    wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifdef __GNUG__
+#pragma implementation "glcanvas.h"
+#endif
+
+#include "wx/wxprec.h"
+
+#include "wx/frame.h"
+#include "wx/colour.h"
+#include "glcanvas.h"
+#include <gdk/gdkx.h>
+
+//---------------------------------------------------------------------------
+// wxGLContext
+//---------------------------------------------------------------------------
+
+IMPLEMENT_CLASS(wxGLContext,wxObject)
+
+wxGLContext::wxGLContext( bool WXUNUSED(isRGB), wxWindow *win, const wxPalette& WXUNUSED(palette) )
+{
+  m_window = win;
+  m_widget = win->m_wxwindow;
+  
+  int data[] = {GLX_RGBA,GLX_RED_SIZE,1,GLX_GREEN_SIZE,1,
+                GLX_BLUE_SIZE,1,GLX_DOUBLEBUFFER,None};
+
+  Display *display = GDK_WINDOW_XDISPLAY( m_widget->window );
+  XVisualInfo *visual_info = glXChooseVisual( display, DefaultScreen(display), data );
+  
+  wxCHECK_RET( visual_info != NULL, "Couldn't choose visual for OpenGl" );
+
+  m_glContext = glXCreateContext( display, visual_info, None, GL_TRUE );
+  
+  wxCHECK_RET( m_glContext != NULL, "Couldn't create OpenGl context" );
+
+  glXMakeCurrent( display, GDK_WINDOW_XWINDOW(m_widget->window), m_glContext );
+}
+
+wxGLContext::~wxGLContext()
+{
+  if (m_glContext)
+  {
+    Display *display = GDK_WINDOW_XDISPLAY( m_widget->window );
+    glXMakeCurrent( display, GDK_WINDOW_XWINDOW(m_widget->window), m_glContext );
+    
+    glXDestroyContext( display, m_glContext );
+  }
+}
+
+void wxGLContext::SwapBuffers()
+{
+  if (m_glContext)
+  {
+    Display *display = GDK_WINDOW_XDISPLAY( m_widget->window );
+    glXSwapBuffers( display, GDK_WINDOW_XWINDOW( m_widget->window ) );
+  }
+}
+
+void wxGLContext::SetCurrent()
+{
+  if (m_glContext) 
+  { 
+    Display *display = GDK_WINDOW_XDISPLAY( m_widget->window );
+    glXMakeCurrent( display, GDK_WINDOW_XWINDOW(m_widget->window), m_glContext );
+  }
+}
+
+void wxGLContext::SetColour(const char *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);
+  }
+}
+
+void wxGLContext::SetupPixelFormat()
+{
+}
+
+void wxGLContext::SetupPalette( const wxPalette& WXUNUSED(palette) )
+{
+}
+
+wxPalette wxGLContext::CreateDefaultPalette()
+{
+  return wxNullPalette;
+}
+
+//---------------------------------------------------------------------------
+// wxGlCanvas
+//---------------------------------------------------------------------------
+
+IMPLEMENT_CLASS(wxGLCanvas, wxScrolledWindow)
+
+BEGIN_EVENT_TABLE(wxGLCanvas, wxScrolledWindow)
+    EVT_SIZE(wxGLCanvas::OnSize)
+END_EVENT_TABLE()
+
+wxGLCanvas::wxGLCanvas(wxWindow *parent, wxWindowID id,
+    const wxPoint& pos, const wxSize& size, long style, const wxString& name,
+    int *WXUNUSED(attribList), const wxPalette& palette):
+  wxScrolledWindow(parent, id, pos, size, style, name)
+{
+  m_glContext = new wxGLContext( TRUE, this, palette );
+}
+
+wxGLCanvas::~wxGLCanvas()
+{
+  if (m_glContext) delete m_glContext;
+}
+
+void wxGLCanvas::SwapBuffers()
+{
+  if (m_glContext) m_glContext->SwapBuffers();
+}
+
+void wxGLCanvas::OnSize(wxSizeEvent& WXUNUSED(event))
+{
+  int width, height;
+  GetClientSize(& width, & height);
+
+  if (m_glContext)
+  {
+    m_glContext->SetCurrent();
+
+    glViewport(0, 0, (GLint)width, (GLint)height);
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 15.0 );
+    glMatrixMode(GL_MODELVIEW);
+  }
+}
+
+void wxGLCanvas::SetCurrent()
+{
+  if (m_glContext) m_glContext->SetCurrent();
+}
+
+void wxGLCanvas::SetColour( const char *colour )
+{
+  if (m_glContext) m_glContext->SetColour( colour );
+}
+
+