20239453d5
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1691 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
365 lines
9.7 KiB
C++
365 lines
9.7 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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{
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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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// "expose_event" of m_glWidget
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//-----------------------------------------------------------------------------
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static void gtk_window_expose_callback( GtkWidget *WXUNUSED(widget), GdkEventExpose *gdk_event, wxWindow *win )
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{
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if (!win->HasVMT()) return;
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win->m_updateRegion.Union( gdk_event->area.x,
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gdk_event->area.y,
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gdk_event->area.width,
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gdk_event->area.height );
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if (gdk_event->count > 0) return;
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/*
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printf( "OnExpose from " );
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if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
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printf( win->GetClassInfo()->GetClassName() );
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printf( ".\n" );
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*/
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wxPaintEvent event( win->GetId() );
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event.SetEventObject( win );
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win->GetEventHandler()->ProcessEvent( event );
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win->m_updateRegion.Clear();
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}
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//-----------------------------------------------------------------------------
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// "draw" of m_glWidget
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//-----------------------------------------------------------------------------
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static void gtk_window_draw_callback( GtkWidget *WXUNUSED(widget), GdkRectangle *rect, wxWindow *win )
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{
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if (!win->HasVMT()) return;
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win->m_updateRegion.Union( rect->x, rect->y, rect->width, rect->height );
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wxPaintEvent event( win->GetId() );
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event.SetEventObject( win );
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win->GetEventHandler()->ProcessEvent( event );
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win->m_updateRegion.Clear();
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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, id, pos, size, style, name, attribList, palette );
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}
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bool wxGLCanvas::Create( 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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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,
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None };
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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_drawing_area_new();
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gtk_widget_set_events( m_glWidget,
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GDK_EXPOSURE_MASK |
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GDK_POINTER_MOTION_HINT_MASK |
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GDK_POINTER_MOTION_MASK |
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GDK_BUTTON_MOTION_MASK |
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GDK_BUTTON1_MOTION_MASK |
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GDK_BUTTON2_MOTION_MASK |
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GDK_BUTTON3_MOTION_MASK |
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GDK_BUTTON_PRESS_MASK |
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GDK_BUTTON_RELEASE_MASK |
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GDK_KEY_PRESS_MASK |
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GDK_KEY_RELEASE_MASK |
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GDK_ENTER_NOTIFY_MASK |
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GDK_LEAVE_NOTIFY_MASK );
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gtk_widget_pop_visual();
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gtk_widget_pop_colormap();
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wxScrolledWindow::Create( parent, id, pos, size, style, name );
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gtk_myfixed_put( GTK_MYFIXED(m_wxwindow), m_glWidget, 0, 0 );
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gtk_signal_connect( GTK_OBJECT(m_glWidget), "expose_event",
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GTK_SIGNAL_FUNC(gtk_window_expose_callback), (gpointer)this );
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gtk_signal_connect( GTK_OBJECT(m_glWidget), "draw",
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GTK_SIGNAL_FUNC(gtk_window_draw_callback), (gpointer)this );
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gtk_widget_show( m_glWidget );
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m_glContext = new wxGLContext( TRUE, this, palette );
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XFree( g_vi );
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g_vi = (XVisualInfo*) NULL;
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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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}
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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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void wxGLCanvas::SetSize( int x, int y, int width, int height, int sizeFlags )
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{
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if (m_resizing) return; // I don't like recursions
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m_resizing = TRUE;
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if (m_parent->m_wxwindow == NULL) // i.e. wxNotebook
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{
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// don't set the size for children of wxNotebook, just take the values.
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m_x = x;
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m_y = y;
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m_width = width;
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m_height = height;
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}
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else
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{
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int old_width = m_width;
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int old_height = m_height;
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if ((sizeFlags & wxSIZE_USE_EXISTING) == wxSIZE_USE_EXISTING)
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{
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if (x != -1) m_x = x;
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if (y != -1) m_y = y;
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if (width != -1) m_width = width;
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if (height != -1) m_height = height;
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}
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else
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{
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m_x = x;
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m_y = y;
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m_width = width;
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m_height = height;
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}
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if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
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{
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if (width == -1) m_width = 80;
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}
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if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
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{
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if (height == -1) m_height = 26;
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}
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if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
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if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
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if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
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if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
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wxPoint pt( m_parent->GetClientAreaOrigin() );
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gtk_myfixed_move( GTK_MYFIXED(m_parent->m_wxwindow), m_widget, m_x+pt.x, m_y+pt.y );
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if ((old_width != m_width) || (old_height != m_height))
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{
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gtk_widget_set_usize( m_widget, m_width, m_height );
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gtk_drawing_area_size( GTK_DRAWING_AREA(m_glWidget), m_width, m_height );
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GtkAllocation allo;
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allo.x = 0;
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allo.y = 0;
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allo.width = m_width;
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allo.height = m_height;
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gtk_widget_size_allocate( m_glWidget, &allo );
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}
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}
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m_sizeSet = TRUE;
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wxSizeEvent event( wxSize(m_width,m_height), GetId() );
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event.SetEventObject( this );
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GetEventHandler()->ProcessEvent( event );
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m_resizing = FALSE;
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}
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void wxGLCanvas::SetSize( int width, int height )
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{
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SetSize( -1, -1, width, height, wxSIZE_USE_EXISTING );
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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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