+/////////////////////////////////////////////////////////////////////////////
+// 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 "glcanvas.h"
+
+#include "wx/frame.h"
+#include "wx/colour.h"
+#include "wx/module.h"
+#include "wx/app.h"
+
+extern "C" {
+#include "gtk/gtk.h"
+#include "gdk/gdk.h"
+#include "gdk/gdkx.h"
+}
+
+#include "wx/gtk/win_gtk.h"
+
+//---------------------------------------------------------------------------
+// global data
+//---------------------------------------------------------------------------
+
+XVisualInfo *g_vi = (XVisualInfo*) NULL;
+
+//---------------------------------------------------------------------------
+// wxGLContext
+//---------------------------------------------------------------------------
+
+IMPLEMENT_CLASS(wxGLContext,wxObject)
+
+wxGLContext::wxGLContext( bool WXUNUSED(isRGB), wxWindow *win, const wxPalette& WXUNUSED(palette) )
+{
+ m_window = win;
+ m_widget = ((wxGLCanvas*)win)->m_glWidget;
+
+ wxCHECK_RET( g_vi, "invalid visual for OpenGl" );
+
+ m_glContext = glXCreateContext( GDK_DISPLAY(), g_vi, None, GL_TRUE );
+
+ wxCHECK_RET( m_glContext, "Couldn't create OpenGl context" );
+}
+
+wxGLContext::~wxGLContext()
+{
+ if (!m_glContext) return;
+
+ if (m_glContext == glXGetCurrentContext())
+ {
+ glXMakeCurrent( GDK_DISPLAY(), None, NULL);
+ }
+
+ glXDestroyContext( GDK_DISPLAY(), m_glContext );
+}
+
+void wxGLContext::SwapBuffers()
+{
+ if (m_glContext)
+ {
+ glXSwapBuffers( GDK_DISPLAY(), GDK_WINDOW_XWINDOW( m_widget->window ) );
+ }
+}
+
+void wxGLContext::SetCurrent()
+{
+ if (m_glContext)
+ {
+ glXMakeCurrent( GDK_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 *attribList,
+ const wxPalette& palette )
+{
+ Create( parent, id, pos, size, style, name, attribList, palette );
+}
+
+bool wxGLCanvas::Create( wxWindow *parent, wxWindowID id,
+ const wxPoint& pos, const wxSize& size,
+ long style, const wxString& name,
+ int *attribList,
+ const wxPalette& palette )
+{
+ if (!attribList)
+ {
+ int data[] = { GLX_RGBA,
+ GLX_DOUBLEBUFFER,
+ GLX_DEPTH_SIZE, 1,
+ None };
+ attribList = (int*) data;
+ }
+
+ Display *dpy = GDK_DISPLAY();
+
+ g_vi = glXChooseVisual( dpy, DefaultScreen(dpy), attribList );
+
+ GdkVisual *visual = gdkx_visual_get( g_vi->visualid );
+ GdkColormap *colormap = gdk_colormap_new( gdkx_visual_get(g_vi->visualid), TRUE );
+
+ gtk_widget_push_colormap( colormap );
+ gtk_widget_push_visual( visual );
+
+ m_glWidget = gtk_drawing_area_new();
+ gtk_widget_set_events( m_glWidget,
+ GDK_EXPOSURE_MASK |
+ GDK_POINTER_MOTION_HINT_MASK |
+ GDK_POINTER_MOTION_MASK |
+ GDK_BUTTON_MOTION_MASK |
+ GDK_BUTTON1_MOTION_MASK |
+ GDK_BUTTON2_MOTION_MASK |
+ GDK_BUTTON3_MOTION_MASK |
+ GDK_BUTTON_PRESS_MASK |
+ GDK_BUTTON_RELEASE_MASK |
+ GDK_KEY_PRESS_MASK |
+ GDK_KEY_RELEASE_MASK |
+ GDK_ENTER_NOTIFY_MASK |
+ GDK_LEAVE_NOTIFY_MASK );
+
+ gtk_widget_pop_visual();
+ gtk_widget_pop_colormap();
+
+ wxScrolledWindow::Create( parent, id, pos, size, style, name );
+
+ gtk_myfixed_put( GTK_MYFIXED(m_wxwindow), m_glWidget, 0, 0 );
+
+ gtk_widget_show( m_glWidget );
+
+ m_glContext = new wxGLContext( TRUE, this, palette );
+
+ XFree( g_vi );
+ g_vi = (XVisualInfo*) NULL;
+
+ return TRUE;
+}
+
+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 && GTK_WIDGET_REALIZED(m_glWidget) )
+ {
+ 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 );
+}
+
+void wxGLCanvas::SetSize( int x, int y, int width, int height, int sizeFlags )
+{
+ if (m_resizing) return; // I don't like recursions
+ m_resizing = TRUE;
+
+ if (m_parent->m_wxwindow == NULL) // i.e. wxNotebook
+ {
+ // don't set the size for children of wxNotebook, just take the values.
+ m_x = x;
+ m_y = y;
+ m_width = width;
+ m_height = height;
+ }
+ else
+ {
+ int old_width = m_width;
+ int old_height = m_height;
+
+ if ((sizeFlags & wxSIZE_USE_EXISTING) == wxSIZE_USE_EXISTING)
+ {
+ if (x != -1) m_x = x;
+ if (y != -1) m_y = y;
+ if (width != -1) m_width = width;
+ if (height != -1) m_height = height;
+ }
+ else
+ {
+ m_x = x;
+ m_y = y;
+ m_width = width;
+ m_height = height;
+ }
+
+ if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
+ {
+ if (width == -1) m_width = 80;
+ }
+
+ if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
+ {
+ if (height == -1) m_height = 26;
+ }
+
+ if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
+ if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
+ if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
+ if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
+
+ wxPoint pt( m_parent->GetClientAreaOrigin() );
+ gtk_myfixed_move( GTK_MYFIXED(m_parent->m_wxwindow), m_widget, m_x+pt.x, m_y+pt.y );
+
+ if ((old_width != m_width) || (old_height != m_height))
+ {
+ gtk_widget_set_usize( m_widget, m_width, m_height );
+
+ gtk_drawing_area_size( GTK_DRAWING_AREA(m_glWidget), m_width, m_height );
+
+ GtkAllocation allo;
+ allo.x = 0;
+ allo.y = 0;
+ allo.width = m_width;
+ allo.height = m_height;
+ gtk_widget_size_allocate( m_glWidget, &allo );
+ }
+ }
+
+ m_sizeSet = TRUE;
+
+ wxSizeEvent event( wxSize(m_width,m_height), GetId() );
+ event.SetEventObject( this );
+ GetEventHandler()->ProcessEvent( event );
+
+ m_resizing = FALSE;
+}
+
+void wxGLCanvas::SetSize( int width, int height )
+{
+ SetSize( -1, -1, width, height, wxSIZE_USE_EXISTING );
+}
+
+GtkWidget *wxGLCanvas::GetConnectWidget()
+{
+ return m_glWidget;
+}
+
+bool wxGLCanvas::IsOwnGtkWindow( GdkWindow *window )
+{
+ return (window == m_glWidget->window);
+}
projects / wxWidgets.git / commitdiff
