-/////////////////////////////////////////////////////////////////////////////
-// Name: glcanvas.cpp
-// Purpose: wxGLCanvas, for using OpenGL with wxWindows under Macintosh
-// Author: AUTHOR
+///////////////////////////////////////////////////////////////////////////////
+// Name: src/mac/carbon/glcanvas.cpp
+// Purpose: wxGLCanvas, for using OpenGL with wxWidgets under Macintosh
+// Author: Stefan Csomor
// Modified by:
-// Created: ??/??/98
+// Created: 1998-01-01
// RCS-ID: $Id$
-// Copyright: (c) AUTHOR
-// Licence: wxWindows licence
-/////////////////////////////////////////////////////////////////////////////
+// Copyright: (c) Stefan Csomor
+// Licence: wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "glcanvas.h"
-#endif
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
#include "wx/wxprec.h"
#if defined(__BORLANDC__)
-#pragma hdrstop
+ #pragma hdrstop
#endif
-#include "wx/setup.h"
-
#if wxUSE_GLCANVAS
+#include "wx/glcanvas.h"
+
#ifndef WX_PRECOMP
-#include "wx/frame.h"
+ #include "wx/frame.h"
+ #include "wx/log.h"
+ #include "wx/settings.h"
#endif
-#include "wx/settings.h"
-#include "wx/log.h"
-
-#include "wx/glcanvas.h"
#include "wx/mac/uma.h"
-/*
- * GLContext implementation
- */
+#include "wx/mac/private.h"
+
+// ----------------------------------------------------------------------------
+// helper functions
+// ----------------------------------------------------------------------------
-wxGLContext::wxGLContext(
- AGLPixelFormat fmt, wxGLCanvas *win,
- const wxPalette& palette,
- const wxGLContext *other /* for sharing display lists */
-)
+static void wxLogAGLError(const char *func)
{
- m_window = win;
+ const int err = aglGetError();
- m_drawable = (AGLDrawable) UMAGetWindowPort(win->GetMacRootWindow());
+ wxLogError(_("OpenGL function \"%s\" failed: %s (error %d)"),
+ func, aglErrorString(err), err);
+}
- m_glContext = aglCreateContext(fmt, other ? other->m_glContext : NULL);
- wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGl context") );
+// ============================================================================
+// implementation
+// ============================================================================
- GLboolean b;
- b = aglSetDrawable(m_glContext, m_drawable);
- wxCHECK_RET( b, wxT("Couldn't bind OpenGl context") );
- aglEnable(m_glContext , AGL_BUFFER_RECT ) ;
- b = aglSetCurrentContext(m_glContext);
- wxCHECK_RET( b, wxT("Couldn't activate OpenGl context") );
-}
+// ----------------------------------------------------------------------------
+// wxGLContext
+// ----------------------------------------------------------------------------
-wxGLContext::~wxGLContext()
+wxGLContext::wxGLContext(wxGLCanvas *win, const wxGLContext *other)
{
- if (m_glContext)
- {
- aglSetCurrentContext(NULL);
- aglDestroyContext(m_glContext);
- }
+ m_aglContext = aglCreateContext(win->GetAGLPixelFormat(),
+ other ? other->m_aglContext : NULL);
+ if ( !m_aglContext )
+ wxLogAGLError("aglCreateContext");
}
-void wxGLContext::SwapBuffers()
+wxGLContext::~wxGLContext()
{
- if (m_glContext)
- {
- aglSwapBuffers(m_glContext);
- }
+ if ( m_aglContext )
+ {
+ // it's ok to pass the current context to this function
+ if ( !aglDestroyContext(m_aglContext) )
+ wxLogAGLError("aglDestroyContext");
+ }
}
-void wxGLContext::SetCurrent()
+void wxGLContext::SetCurrent(const wxGLCanvas& win) const
{
- if (m_glContext)
- {
- aglSetCurrentContext(m_glContext);
- }
-}
+ if ( !m_aglContext )
+ return;
-void wxGLContext::Update()
-{
- if (m_glContext)
- {
- aglUpdateContext(m_glContext);
- }
-}
+ AGLDrawable drawable = (AGLDrawable)UMAGetWindowPort(
+ MAC_WXHWND(win.MacGetTopLevelWindowRef()));
+ if ( !aglSetDrawable(m_aglContext, drawable) )
+ wxLogAGLError("aglSetDrawable");
-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);
- }
-}
+ if ( !aglSetCurrentContext(m_aglContext) )
+ wxLogAGLError("aglSetCurrentContext");
+ wx_const_cast(wxGLCanvas&, win).SetViewport();
+}
-/*
- * wxGLCanvas implementation
- */
+// ----------------------------------------------------------------------------
+// wxGLCanvas
+// ----------------------------------------------------------------------------
IMPLEMENT_CLASS(wxGLCanvas, wxWindow)
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)
+wxGLCanvas::wxGLCanvas(wxWindow *parent,
+ wxWindowID id,
+ const int *attribList,
+ const wxPoint& pos,
+ const wxSize& size,
+ long style,
+ const wxString& name,
+ const wxPalette& palette)
{
- Create(parent, NULL, id, pos, size, style, name, attribList, palette);
+ Create(parent, id, pos, size, style, name, attribList, palette);
}
-wxGLCanvas::wxGLCanvas( wxWindow *parent,
- const wxGLContext *shared, wxWindowID id,
- const wxPoint& pos, const wxSize& size, long style, const wxString& name,
- int *attribList, const wxPalette& palette )
+#if WXWIN_COMPATIBILITY_2_8
+
+wxGLCanvas::wxGLCanvas(wxWindow *parent,
+ wxWindowID id,
+ const wxPoint& pos,
+ const wxSize& size,
+ long style,
+ const wxString& name,
+ const int *attribList,
+ const wxPalette& palette)
{
- Create(parent, shared, id, pos, size, style, name, attribList, palette);
+ if ( Create(parent, id, pos, size, style, name, attribList, palette) )
+ m_glContext = new wxGLContext(this);
}
-wxGLCanvas::wxGLCanvas( wxWindow *parent, const wxGLCanvas *shared, wxWindowID id,
- const wxPoint& pos, const wxSize& size, long style, const wxString& name,
- int *attribList, const wxPalette& palette )
+wxGLCanvas::wxGLCanvas(wxWindow *parent,
+ const wxGLContext *shared,
+ wxWindowID id,
+ const wxPoint& pos,
+ const wxSize& size,
+ long style,
+ const wxString& name,
+ const int *attribList,
+ const wxPalette& palette)
{
- Create(parent, shared ? shared->GetContext() : NULL, id, pos, size, style, name, attribList, palette);
+ if ( Create(parent, id, pos, size, style, name, attribList, palette) )
+ m_glContext = new wxGLContext(this, shared);
}
-wxGLCanvas::~wxGLCanvas()
+wxGLCanvas::wxGLCanvas(wxWindow *parent,
+ const wxGLCanvas *shared,
+ wxWindowID id,
+ const wxPoint& pos,
+ const wxSize& size,
+ long style,
+ const wxString& name,
+ const int *attribList,
+ const wxPalette& palette)
{
- if (m_glContext)
- delete m_glContext;
+ if ( Create(parent, id, pos, size, style, name, attribList, palette) )
+ m_glContext = new wxGLContext(this, shared ? shared->m_glContext : NULL);
}
+#endif // WXWIN_COMPATIBILITY_2_8
+
static AGLPixelFormat ChoosePixelFormat(const int *attribList)
{
GLint data[512];
- GLint defaultAttribs[] = { AGL_RGBA,
- AGL_DOUBLEBUFFER,
- AGL_MINIMUM_POLICY,
- AGL_DEPTH_SIZE, 1, // use largest available depth buffer
- AGL_RED_SIZE, 1,
- AGL_GREEN_SIZE, 1,
- AGL_BLUE_SIZE, 1,
- AGL_ALPHA_SIZE, 0,
- AGL_NONE };
- GLint *attribs;
- if (!attribList)
+ const GLint defaultAttribs[] =
+ {
+ AGL_RGBA,
+ AGL_DOUBLEBUFFER,
+ AGL_MINIMUM_POLICY, // never choose less than requested
+ AGL_DEPTH_SIZE, 1, // use largest available depth buffer
+ AGL_RED_SIZE, 1,
+ AGL_GREEN_SIZE, 1,
+ AGL_BLUE_SIZE, 1,
+ AGL_ALPHA_SIZE, 0,
+ AGL_NONE
+ };
+
+ const GLint *attribs;
+ if ( !attribList )
{
- attribs = defaultAttribs;
+ attribs = defaultAttribs;
}
else
{
- int arg=0, p=0;
+ unsigned p = 0;
+ data[p++] = AGL_MINIMUM_POLICY; // make _SIZE tags behave more like GLX
- data[p++] = AGL_MINIMUM_POLICY; // make _SIZE tags behave more like GLX
- while( (attribList[arg]!=0) && (p<512) )
- {
- switch( attribList[arg++] )
+ for ( unsigned arg = 0; attribList[arg] !=0 && p < WXSIZEOF(data); )
{
- case WX_GL_RGBA: data[p++] = AGL_RGBA; break;
- case WX_GL_BUFFER_SIZE:
- data[p++]=AGL_BUFFER_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_LEVEL:
- data[p++]=AGL_LEVEL; data[p++]=attribList[arg++]; break;
- case WX_GL_DOUBLEBUFFER: data[p++] = AGL_DOUBLEBUFFER; break;
- case WX_GL_STEREO: data[p++] = AGL_STEREO; break;
- case WX_GL_AUX_BUFFERS:
- data[p++]=AGL_AUX_BUFFERS; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_RED:
- data[p++]=AGL_RED_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_GREEN:
- data[p++]=AGL_GREEN_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_BLUE:
- data[p++]=AGL_BLUE_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_ALPHA:
- data[p++]=AGL_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_DEPTH_SIZE:
- data[p++]=AGL_DEPTH_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_STENCIL_SIZE:
- data[p++]=AGL_STENCIL_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_ACCUM_RED:
- data[p++]=AGL_ACCUM_RED_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_ACCUM_GREEN:
- data[p++]=AGL_ACCUM_GREEN_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_ACCUM_BLUE:
- data[p++]=AGL_ACCUM_BLUE_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_ACCUM_ALPHA:
- data[p++]=AGL_ACCUM_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
- default:
- break;
+ switch ( attribList[arg++] )
+ {
+ case WX_GL_RGBA:
+ data[p++] = AGL_RGBA;
+ break;
+
+ case WX_GL_BUFFER_SIZE:
+ data[p++] = AGL_BUFFER_SIZE;
+ data[p++] = attribList[arg++];
+ break;
+
+ case WX_GL_LEVEL:
+ data[p++]=AGL_LEVEL;
+ data[p++]=attribList[arg++];
+ break;
+
+ case WX_GL_DOUBLEBUFFER:
+ data[p++] = AGL_DOUBLEBUFFER;
+ break;
+
+ case WX_GL_STEREO:
+ data[p++] = AGL_STEREO;
+ break;
+
+ case WX_GL_AUX_BUFFERS:
+ data[p++] = AGL_AUX_BUFFERS;
+ data[p++] = attribList[arg++];
+ break;
+
+ case WX_GL_MIN_RED:
+ data[p++] = AGL_RED_SIZE;
+ data[p++] = attribList[arg++];
+ break;
+
+ case WX_GL_MIN_GREEN:
+ data[p++] = AGL_GREEN_SIZE;
+ data[p++] = attribList[arg++];
+ break;
+
+ case WX_GL_MIN_BLUE:
+ data[p++] = AGL_BLUE_SIZE;
+ data[p++] = attribList[arg++];
+ break;
+
+ case WX_GL_MIN_ALPHA:
+ data[p++] = AGL_ALPHA_SIZE;
+ data[p++] = attribList[arg++];
+ break;
+
+ case WX_GL_DEPTH_SIZE:
+ data[p++] = AGL_DEPTH_SIZE;
+ data[p++] = attribList[arg++];
+ break;
+
+ case WX_GL_STENCIL_SIZE:
+ data[p++] = AGL_STENCIL_SIZE;
+ data[p++] = attribList[arg++];
+ break;
+
+ case WX_GL_MIN_ACCUM_RED:
+ data[p++] = AGL_ACCUM_RED_SIZE;
+ data[p++] = attribList[arg++];
+ break;
+
+ case WX_GL_MIN_ACCUM_GREEN:
+ data[p++] = AGL_ACCUM_GREEN_SIZE;
+ data[p++] = attribList[arg++];
+ break;
+
+ case WX_GL_MIN_ACCUM_BLUE:
+ data[p++] = AGL_ACCUM_BLUE_SIZE;
+ data[p++] = attribList[arg++];
+ break;
+
+ case WX_GL_MIN_ACCUM_ALPHA:
+ data[p++] = AGL_ACCUM_ALPHA_SIZE;
+ data[p++] = attribList[arg++];
+ break;
+ }
}
- }
- data[p] = 0;
- attribs = data;
+ data[p] = AGL_NONE;
+
+ attribs = data;
}
-
+
return aglChoosePixelFormat(NULL, 0, attribs);
}
-bool wxGLCanvas::Create(wxWindow *parent, const wxGLContext *shared, wxWindowID id,
- const wxPoint& pos, const wxSize& size, long style, const wxString& name,
- int *attribList, const wxPalette& palette)
+bool wxGLCanvas::Create(wxWindow *parent,
+ wxWindowID id,
+ const wxPoint& pos,
+ const wxSize& size,
+ long style,
+ const wxString& name,
+ const int *attribList,
+ const wxPalette& WXUNUSED(palette))
{
- m_macEraseOnRedraw = false ;
- wxWindow::Create( parent, id, pos, size, style, name );
+ m_needsUpdate = false;
+ m_macCanvasIsShown = false;
- AGLPixelFormat fmt = ChoosePixelFormat(attribList);
- wxCHECK_MSG( fmt, false, wxT("Couldn't create OpenGl pixel format") );
+ m_aglFormat = ChoosePixelFormat(attribList);
+ if ( !m_aglFormat )
+ return false;
- m_glContext = new wxGLContext(fmt, this, palette, shared);
+ if ( !wxWindow::Create(parent, id, pos, size, style, name) )
+ return false;
+
+ m_macCanvasIsShown = true;
- aglDestroyPixelFormat(fmt);
-
return true;
}
-void wxGLCanvas::SwapBuffers()
+wxGLCanvas::~wxGLCanvas()
{
- if (m_glContext)
- m_glContext->SwapBuffers();
+ if ( m_aglFormat )
+ aglDestroyPixelFormat(m_aglFormat);
}
-void wxGLCanvas::UpdateContext()
+void wxGLCanvas::SwapBuffers()
{
- if (m_glContext)
- m_glContext->Update();
+ AGLContext context = aglGetCurrentContext();
+ wxCHECK_RET( context, _T("should have current context") );
+
+ aglSwapBuffers(context);
}
void wxGLCanvas::SetViewport()
{
- // viewport is initially set to entire port
- // adjust glViewport to just this window
- int x = 0 ;
- int y = 0 ;
-
- MacClientToRootWindow( &x , &y ) ;
+ if ( !m_needsUpdate )
+ return;
+
+ m_needsUpdate = false;
+
+ AGLContext context = aglGetCurrentContext();
+ if ( !context )
+ return;
+
+ // viewport is initially set to entire port, adjust it to just this window
+ int x = 0,
+ y = 0;
+ MacClientToRootWindow(&x , &y);
+
int width, height;
- GetClientSize(& width, & height);
- Rect bounds ;
- GetWindowPortBounds( GetMacRootWindow() , &bounds ) ;
- GLint parms[4] ;
- parms[0] = x ;
- parms[1] = bounds.bottom - bounds.top - ( y + height ) ;
- parms[2] = width ;
- parms[3] = height ;
-
- aglSetInteger( m_glContext->m_glContext , AGL_BUFFER_RECT , parms ) ;
+ GetClientSize(&width, &height);
+
+ Rect bounds;
+ GetWindowPortBounds(MAC_WXHWND(MacGetTopLevelWindowRef()) , &bounds);
+
+#if 0
+ // TODO in case we adopt point vs pixel coordinates, this will make the conversion
+ HIRect hiRect = CGRectMake( x, y, width, height );
+ HIRectConvert( &hiRect, kHICoordSpace72DPIGlobal, NULL, kHICoordSpaceScreenPixel, NULL);
+ HIRect hiBounds = CGRectMake( 0, 0, bounds.right - bounds.left , bounds.bottom - bounds.top );
+ HIRectConvert( &hiBounds, kHICoordSpace72DPIGlobal, NULL, kHICoordSpaceScreenPixel, NULL);
+ GLint parms[4];
+ parms[0] = hiRect.origin.x;
+ parms[1] = hiBounds.size.height - (hiRect.origin.y + hiRect.size.height);
+ parms[2] = hiRect.size.width;
+ parms[3] = hiRect.size.height;
+#else
+ GLint parms[4];
+ parms[0] = x;
+ parms[1] = bounds.bottom - bounds.top - ( y + height );
+ parms[2] = width;
+ parms[3] = height;
+#endif
+
+ // move the buffer rect out of sight if we're hidden
+ if ( !m_macCanvasIsShown )
+ parms[0] += 20000;
+
+ if ( !aglSetInteger(context, AGL_BUFFER_RECT, parms) )
+ wxLogAGLError("aglSetInteger(AGL_BUFFER_RECT)");
+
+ if ( !aglEnable(context, AGL_BUFFER_RECT) )
+ wxLogAGLError("aglEnable(AGL_BUFFER_RECT)");
+
+ if ( !aglUpdateContext(context) )
+ wxLogAGLError("aglUpdateContext");
}
void wxGLCanvas::OnSize(wxSizeEvent& event)
{
- if (m_glContext)
- {
- UpdateContext();
- m_glContext->SetCurrent();
-
- SetViewport();
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 15.0 );
- glMatrixMode(GL_MODELVIEW);
- }
+ MacUpdateView();
+ event.Skip();
}
-void wxGLCanvas::SetCurrent()
+void wxGLCanvas::MacUpdateView()
{
- if (m_glContext)
- {
- m_glContext->SetCurrent();
- }
+ m_needsUpdate = true;
+ Refresh(false);
}
-void wxGLCanvas::SetColour(const char *colour)
+void wxGLCanvas::MacSuperChangedPosition()
{
- if (m_glContext)
- m_glContext->SetColour(colour);
+ MacUpdateView();
+ wxWindow::MacSuperChangedPosition();
}
+void wxGLCanvas::MacTopLevelWindowChangedPosition()
+{
+ MacUpdateView();
+ wxWindow::MacTopLevelWindowChangedPosition();
+}
-//---------------------------------------------------------------------------
-// wxGLApp
-//---------------------------------------------------------------------------
+void wxGLCanvas::MacVisibilityChanged()
+{
+ if ( MacIsReallyShown() != m_macCanvasIsShown )
+ {
+ m_macCanvasIsShown = !m_macCanvasIsShown;
+ MacUpdateView();
+ }
-IMPLEMENT_CLASS(wxGLApp, wxApp)
+ wxWindowMac::MacVisibilityChanged();
+}
+
+// ----------------------------------------------------------------------------
+// wxGLApp
+// ----------------------------------------------------------------------------
-bool wxGLApp::InitGLVisual(int *attribList)
+bool wxGLApp::InitGLVisual(const int *attribList)
{
AGLPixelFormat fmt = ChoosePixelFormat(attribList);
- if (fmt != NULL) {
- aglDestroyPixelFormat(fmt);
- return true;
- } else
+ if ( !fmt )
return false;
-}
-wxGLApp::~wxGLApp(void)
-{
+ aglDestroyPixelFormat(fmt);
+ return true;
}
#endif // wxUSE_GLCANVAS
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