5fd11f0971
Fixed Reparent (added heaps of debug code for this) Small mods to glcanvas git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3799 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
302 lines
7.7 KiB
C++
302 lines
7.7 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: glcanvas.cpp
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// Purpose: wxGLCanvas, for using OpenGL/Mesa with wxWindows and GTK
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// Author: Robert Roebling
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// Modified by:
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// Created: 17/08/98
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// RCS-ID: $Id$
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// Copyright: (c) Robert Roebling
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifdef __GNUG__
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#pragma implementation "glcanvas.h"
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#endif
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#include "glcanvas.h"
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#include "wx/frame.h"
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#include "wx/colour.h"
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#include "wx/module.h"
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#include "wx/app.h"
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extern "C" {
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#include "gtk/gtk.h"
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#include "gdk/gdk.h"
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#include "gdk/gdkx.h"
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}
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#include "wx/gtk/win_gtk.h"
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//---------------------------------------------------------------------------
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// global data
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//---------------------------------------------------------------------------
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XVisualInfo *g_vi = (XVisualInfo*) NULL;
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//---------------------------------------------------------------------------
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// wxGLContext
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//---------------------------------------------------------------------------
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IMPLEMENT_CLASS(wxGLContext,wxObject)
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wxGLContext::wxGLContext( bool WXUNUSED(isRGB), wxWindow *win, const wxPalette& WXUNUSED(palette) )
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{
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m_window = win;
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m_widget = ((wxGLCanvas*)win)->m_glWidget;
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wxCHECK_RET( g_vi, "invalid visual for OpenGl" );
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m_glContext = glXCreateContext( GDK_DISPLAY(), g_vi, None, GL_TRUE );
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wxCHECK_RET( m_glContext, "Couldn't create OpenGl context" );
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}
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wxGLContext::wxGLContext(
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bool WXUNUSED(isRGB), wxWindow *win,
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const wxPalette& WXUNUSED(palette),
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const wxGLContext *other /* for sharing display lists */
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)
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{
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m_window = win;
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m_widget = ((wxGLCanvas*)win)->m_glWidget;
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wxCHECK_RET( g_vi, "invalid visual for OpenGl" );
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if( other != 0 )
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m_glContext = glXCreateContext( GDK_DISPLAY(), g_vi, other->m_glContext,
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GL_TRUE );
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else
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m_glContext = glXCreateContext( GDK_DISPLAY(), g_vi, None, GL_TRUE );
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wxCHECK_RET( m_glContext, "Couldn't create OpenGl context" );
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}
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wxGLContext::~wxGLContext()
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{
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if (!m_glContext) return;
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if (m_glContext == glXGetCurrentContext())
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{
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glXMakeCurrent( GDK_DISPLAY(), None, NULL);
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}
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glXDestroyContext( GDK_DISPLAY(), m_glContext );
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}
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void wxGLContext::SwapBuffers()
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{
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if (m_glContext)
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{
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glXSwapBuffers( GDK_DISPLAY(), GDK_WINDOW_XWINDOW( m_widget->window ) );
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}
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}
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void wxGLContext::SetCurrent()
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{
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if (m_glContext)
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{
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glXMakeCurrent( GDK_DISPLAY(), GDK_WINDOW_XWINDOW(m_widget->window), m_glContext );
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}
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}
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void wxGLContext::SetColour(const char *colour)
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{
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float r = 0.0;
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float g = 0.0;
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float b = 0.0;
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wxColour *col = wxTheColourDatabase->FindColour(colour);
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if (col)
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{
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r = (float)(col->Red()/256.0);
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g = (float)(col->Green()/256.0);
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b = (float)(col->Blue()/256.0);
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glColor3f( r, g, b);
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}
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}
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void wxGLContext::SetupPixelFormat()
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{
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}
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void wxGLContext::SetupPalette( const wxPalette& WXUNUSED(palette) )
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{
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}
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wxPalette wxGLContext::CreateDefaultPalette()
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{
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return wxNullPalette;
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}
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//---------------------------------------------------------------------------
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// wxGlCanvas
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//---------------------------------------------------------------------------
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IMPLEMENT_CLASS(wxGLCanvas, wxScrolledWindow)
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BEGIN_EVENT_TABLE(wxGLCanvas, wxScrolledWindow)
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EVT_SIZE(wxGLCanvas::OnSize)
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END_EVENT_TABLE()
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wxGLCanvas::wxGLCanvas( wxWindow *parent, wxWindowID id,
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const wxPoint& pos, const wxSize& size,
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long style, const wxString& name,
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int *attribList,
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const wxPalette& palette )
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{
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Create( parent, NULL, id, pos, size, style, name, attribList, palette );
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}
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wxGLCanvas::wxGLCanvas( wxWindow *parent,
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const wxGLContext *shared,
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wxWindowID id,
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const wxPoint& pos, const wxSize& size,
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long style, const wxString& name,
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int *attribList,
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const wxPalette& palette )
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{
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Create( parent, shared, id, pos, size, style, name, attribList, palette );
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}
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bool wxGLCanvas::Create( wxWindow *parent,
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const wxGLContext *shared,
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wxWindowID id,
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const wxPoint& pos, const wxSize& size,
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long style, const wxString& name,
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int *attribList,
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const wxPalette& palette)
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{
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m_needParent = TRUE;
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m_acceptsFocus = TRUE;
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if (!PreCreation( parent, pos, size ) ||
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!CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
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{
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wxFAIL_MSG( _T("wxGLCanvas creation failed") );
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return FALSE;
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}
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if (!attribList)
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{
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int data[] = { GLX_RGBA,
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GLX_DOUBLEBUFFER,
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GLX_DEPTH_SIZE, 1, /* use largest available depth buffer */
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GLX_RED_SIZE, 1,
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GLX_GREEN_SIZE, 1,
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GLX_BLUE_SIZE, 1,
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GLX_ALPHA_SIZE, 0,
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None };
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attribList = (int*) data;
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}
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else
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{
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int data[512], arg=0, p=0;
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while( (attribList[arg]!=0) && (p<512) )
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{
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switch( attribList[arg++] )
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{
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case WX_GL_RGBA: data[p++] = GLX_RGBA; break;
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case WX_GL_DOUBLEBUFFER: data[p++] = GLX_DOUBLEBUFFER; break;
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case WX_GL_DEPTH_SIZE:
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data[p++]=GLX_DEPTH_SIZE; data[p++]=attribList[arg++]; break;
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case WX_GL_MIN_RED:
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data[p++]=GLX_RED_SIZE; data[p++]=attribList[arg++]; break;
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case WX_GL_MIN_GREEN:
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data[p++]=GLX_GREEN_SIZE; data[p++]=attribList[arg++]; break;
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case WX_GL_MIN_BLUE:
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data[p++]=GLX_BLUE_SIZE; data[p++]=attribList[arg++]; break;
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default:
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break;
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}
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}
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data[p] = 0;
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attribList = (int*) data;
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}
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Display *dpy = GDK_DISPLAY();
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g_vi = glXChooseVisual( dpy, DefaultScreen(dpy), attribList );
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GdkVisual *visual = gdkx_visual_get( g_vi->visualid );
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GdkColormap *colormap = gdk_colormap_new( gdkx_visual_get(g_vi->visualid), TRUE );
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gtk_widget_push_colormap( colormap );
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gtk_widget_push_visual( visual );
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m_glWidget = gtk_myfixed_new();
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m_widget = m_glWidget;
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gtk_widget_pop_visual();
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gtk_widget_pop_colormap();
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m_parent->DoAddChild( this );
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/* must be realized for OpenGl output */
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gtk_widget_realize( m_glWidget );
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m_glContext = new wxGLContext( TRUE, this, palette, shared );
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XFree( g_vi );
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g_vi = (XVisualInfo*) NULL;
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/* we pretend to have a m_wxwindow so that PostCreation hooks
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up the events for expose and draw */
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m_wxwindow = m_glWidget;
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PostCreation();
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Show( TRUE );
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return TRUE;
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}
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wxGLCanvas::~wxGLCanvas()
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{
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if (m_glContext) delete m_glContext;
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m_wxwindow = (GtkWidget*) NULL;
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}
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void wxGLCanvas::SwapBuffers()
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{
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if (m_glContext) m_glContext->SwapBuffers();
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}
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void wxGLCanvas::OnSize(wxSizeEvent& WXUNUSED(event))
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{
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int width, height;
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GetClientSize( &width, &height );
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if (m_glContext && GTK_WIDGET_REALIZED(m_glWidget) )
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{
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SetCurrent();
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glViewport(0, 0, (GLint)width, (GLint)height );
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 15.0 );
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glMatrixMode(GL_MODELVIEW);
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}
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}
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void wxGLCanvas::SetCurrent()
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{
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if (m_glContext) m_glContext->SetCurrent();
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}
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void wxGLCanvas::SetColour( const char *colour )
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{
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if (m_glContext) m_glContext->SetColour( colour );
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}
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GtkWidget *wxGLCanvas::GetConnectWidget()
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{
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return m_glWidget;
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}
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bool wxGLCanvas::IsOwnGtkWindow( GdkWindow *window )
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{
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return (window == m_glWidget->window);
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}
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