don't expect errno to be set to EOVERFLOW if vsnprintf() fails

[wxWidgets.git] / src / x11 / glcanvas.cpp

diff --git a/src/x11/glcanvas.cpp b/src/x11/glcanvas.cpp
index f45784eeabac011850a6cdc50681590ea3d40b13..dc1ae653ba0cb2b7b5eb89e21a42cb7b02a58c63 100644 (file)
--- a/src/x11/glcanvas.cpp
+++ b/src/x11/glcanvas.cpp
@@ -1,6 +1,6 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        glcanvas.cpp
-// Purpose:     wxGLCanvas, for using OpenGL with wxWindows 2.0 for Motif.
+// Purpose:     wxGLCanvas, for using OpenGL with wxWidgets
 //              Uses the GLX extension.
 // Author:      Julian Smart and Wolfram Gloger
 // Modified by:
@@ -10,10 +10,6 @@
 // Licence:    wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-#pragma implementation "glcanvas.h"
-#endif
-
 #include "wx/setup.h"
 
 #if wxUSE_GLCANVAS
@@ -26,11 +22,24 @@
 #ifdef __VMS
 # pragma message disable nosimpint
 #endif
-#include <Xm/Xm.h>
+#include <X11/Xlib.h>
 #ifdef __VMS
 # pragma message enable nosimpint
 #endif
-#include "wx/motif/private.h"
+#include "wx/x11/private.h"
+
+// DLL options compatibility check:
+#include "wx/build.h"
+WX_CHECK_BUILD_OPTIONS("wxGL")
+
+static inline WXWindow wxGetClientAreaWindow(wxWindow* win)
+{
+#ifdef __WXMOTIF__
+    return win->GetClientXWindow();
+#else
+    return win->GetClientAreaWindow();
+#endif
+}
 
 #ifdef OLD_MESA
 // workaround for bug in Mesa's glx.c
@@ -60,12 +69,12 @@ wxGLContext::wxGLContext( bool WXUNUSED(isRGB), wxWindow *win,
     wxGLCanvas *gc = (wxGLCanvas*) win;
     XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
     
-    wxCHECK_RET( vi, "invalid visual for OpenGl" );
+    wxCHECK_RET( vi, wxT("invalid visual for OpenGL") );
     
     m_glContext = glXCreateContext( (Display *)wxGetDisplay(), vi,
                                     None, GL_TRUE);
   
-    wxCHECK_RET( m_glContext, "Couldn't create OpenGl context" );
+    wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGL context") );
 }
 
 wxGLContext::wxGLContext( 
@@ -80,7 +89,7 @@ wxGLContext::wxGLContext(
     wxGLCanvas *gc = (wxGLCanvas*) win;
     XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
     
-    wxCHECK_RET( vi, "invalid visual for OpenGl" );
+    wxCHECK_RET( vi, wxT("invalid visual for OpenGL") );
     
     if( other != 0 )
         m_glContext = glXCreateContext( (Display *)wxGetDisplay(), vi, 
@@ -89,7 +98,7 @@ wxGLContext::wxGLContext(
         m_glContext = glXCreateContext( (Display *)wxGetDisplay(), vi,
                                         None, GL_TRUE );
     
-    wxCHECK_RET( m_glContext, "Couldn't create OpenGl context" );
+    wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGL context") );
 }
 
 wxGLContext::~wxGLContext()
@@ -109,7 +118,7 @@ void wxGLContext::SwapBuffers()
     if (m_glContext)
     {
         Display* display = (Display*) wxGetDisplay();
-        glXSwapBuffers(display, (Window) m_window->GetClientAreaWindow());
+        glXSwapBuffers(display, (Window) wxGetClientAreaWindow(m_window));
     }
 }
 
@@ -118,31 +127,39 @@ void wxGLContext::SetCurrent()
     if (m_glContext) 
     { 
         Display* display = (Display*) wxGetDisplay();
-        glXMakeCurrent(display, (Window) m_window->GetClientAreaWindow(), 
+        glXMakeCurrent(display, (Window) wxGetClientAreaWindow(m_window), 
                        m_glContext );;
     }
 }
 
-void wxGLContext::SetColour(const char *colour)
+void wxGLContext::SetColour(const wxChar *colour)
 {
-    wxColour *the_colour = wxTheColourDatabase->FindColour(colour);
-    if(the_colour) {
-       GLboolean b;
-       glGetBooleanv(GL_RGBA_MODE, &b);
-       if(b) {
-           glColor3ub(the_colour->Red(),
-                      the_colour->Green(),
-                      the_colour->Blue());
-       } else {
-            the_colour->CalcPixel(wxTheApp->GetMainColormap(wxGetDisplay()));
-           GLint pix = (GLint)the_colour->GetPixel();
-           if(pix == -1)
+    wxColour the_colour = wxTheColourDatabase->Find(colour);
+    if(the_colour.Ok())
+    {
+        GLboolean b;
+        glGetBooleanv(GL_RGBA_MODE, &b);
+        if(b)
+        {
+            glColor3ub(the_colour.Red(),
+                    the_colour.Green(),
+                    the_colour.Blue());
+        }
+        else
+        {
+#ifdef __WXMOTIF__
+            the_colour.AllocColour(m_window->GetXDisplay());
+#else
+            the_colour.CalcPixel(wxTheApp->GetMainColormap(wxGetDisplay()));
+#endif
+            GLint pix = (GLint)the_colour.GetPixel();
+            if(pix == -1)
             {
-                wxLogError("wxGLCanvas: cannot allocate color\n");
-               return;
+                wxLogError(wxT("wxGLCanvas: cannot allocate color\n"));
+                return;
             }
-           glIndexi(pix);
-       }
+            glIndexi(pix);
+        }
     }
 }
 
@@ -238,8 +255,8 @@ bool wxGLCanvas::Create( wxWindow *parent,
 
     // Check for the presence of the GLX extension
     if(!glXQueryExtension(display, NULL, NULL)) {
-       wxDebugMsg("wxGLCanvas: GLX extension is missing\n");
-       return false;
+       wxLogDebug(wxT("wxGLCanvas: GLX extension is missing\n"));
+       return FALSE;
     }
 
     if(attribList) {
@@ -287,7 +304,7 @@ bool wxGLCanvas::Create( wxWindow *parent,
       attribList = (int*) data;
       // Get an appropriate visual
       vi = glXChooseVisual(display, DefaultScreen(display), attribList);
-      if(!vi) return false;
+      if(!vi) return FALSE;
       
       // Here we should make sure that vi is the same visual as the
       // one used by the xwindow drawable in wxCanvas.  However,
@@ -295,12 +312,12 @@ bool wxGLCanvas::Create( wxWindow *parent,
     } else {
        // By default, we use the visual of xwindow
         // NI: is this really senseful ? opengl in e.g. color index mode ?
-       XGetWindowAttributes(display, (Window) GetClientAreaWindow(), &xwa);
+       XGetWindowAttributes(display, (Window)wxGetClientAreaWindow(this), &xwa);
        vi_templ.visualid = XVisualIDFromVisual(xwa.visual);
        vi = XGetVisualInfo(display, VisualIDMask, &vi_templ, &n);
-       if(!vi) return false;
+       if(!vi) return FALSE;
        glXGetConfig(display, vi, GLX_USE_GL, &val);
-       if(!val) return false;
+       if(!val) return FALSE;
        // Basically, this is it.  It should be possible to use vi
        // in glXCreateContext() below.  But this fails with Mesa.
        // I notified the Mesa author about it; there may be a fix.
@@ -327,13 +344,13 @@ bool wxGLCanvas::Create( wxWindow *parent,
        a_list[n] = None;
        // XFree(vi);
        vi = glXChooseVisual(display, DefaultScreen(display), a_list);
-       if(!vi) return false;
+       if(!vi) return FALSE;
 #endif /* OLD_MESA */
     }
 
     m_vi = vi;  // safe for later use
     
-    wxCHECK_MSG( m_vi, FALSE, "required visual couldn't be found" );
+    wxCHECK_MSG( m_vi, FALSE, wxT("required visual couldn't be found") );
 
     // Create the GLX context and make it current
 
@@ -348,7 +365,7 @@ bool wxGLCanvas::Create( wxWindow *parent,
 #endif
     SetCurrent();
 
-    return true;
+    return TRUE;
 }
 
 wxGLCanvas::~wxGLCanvas(void)
@@ -378,7 +395,7 @@ void wxGLCanvas::SetCurrent()
     // if(glx_cx) glXMakeCurrent(display, (Window) GetClientAreaWindow(), glx_cx);
 }
 
-void wxGLCanvas::SetColour(const char *col)
+void wxGLCanvas::SetColour(const wxChar *col)
 {
     if( m_glContext ) m_glContext->SetColour(col);
 }