Prevents crashes caused by negative line count being passed to wrapping functions...

[wxWidgets.git] / src / gtk / utilsgtk.cpp

diff --git a/src/gtk/utilsgtk.cpp b/src/gtk/utilsgtk.cpp
index 35dd71d871ee0f46c3fee1fdd81611886a6e978f..ae645105e1eac2bb6ffd34f7fac05ddc54fb3d4d 100644 (file)
--- a/src/gtk/utilsgtk.cpp
+++ b/src/gtk/utilsgtk.cpp
@@ -11,11 +11,14 @@
 #include "wx/wxprec.h"
 
 #include "wx/utils.h"
-#include "wx/string.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/string.h"
+    #include "wx/intl.h"
+    #include "wx/log.h"
+#endif
 
 #include "wx/apptrait.h"
-#include "wx/intl.h"
-#include "wx/log.h"
 
 #include "wx/process.h"
 
@@ -69,12 +72,12 @@ bool wxSetDetectableAutoRepeat( bool flag )
 {
     Bool result;
     XkbSetDetectableAutoRepeat( GDK_DISPLAY(), flag, &result );
-    return result;       /* TRUE if keyboard hardware supports this mode */
+    return result;       /* true if keyboard hardware supports this mode */
 }
 #else
 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
 {
-    return FALSE;
+    return false;
 }
 #endif
 
@@ -152,7 +155,7 @@ void wxGetMousePosition( int* x, int* y )
 
 bool wxColourDisplay()
 {
-    return TRUE;
+    return true;
 }
 
 int wxDisplayDepth()
@@ -160,21 +163,6 @@ int wxDisplayDepth()
     return gdk_drawable_get_visual( wxGetRootWindow()->window )->depth;
 }
 
-wxToolkitInfo& wxGUIAppTraits::GetToolkitInfo()
-{
-    static wxToolkitInfo info;
-    info.shortName = _T("gtk2");
-    info.name = _T("wxGTK");
-#ifdef __WXUNIVERSAL__
-    info.shortName << _T("univ");
-    info.name << _T("/wxUniversal");
-#endif
-    info.versionMajor = gtk_major_version;
-    info.versionMinor = gtk_minor_version;
-    info.os = wxGTK;
-    return info;
-}
-
 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 {
     return wxGenericFindWindowAtPoint(pt);
@@ -184,25 +172,48 @@ wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 
 wxCharBuffer wxConvertToGTK(const wxString& s, wxFontEncoding enc)
 {
+    wxCharBuffer buf;
     if ( enc == wxFONTENCODING_UTF8 )
     {
-        // no need for conversion at all
-        return wxCharBuffer(s);
-    }
-
-    wxWCharBuffer wbuf;
-    if ( enc == wxFONTENCODING_SYSTEM || enc == wxFONTENCODING_DEFAULT )
-    {
-        wbuf = wxConvLocal.cMB2WC(s);
+        // no need for conversion at all, but do check that we have a valid
+        // UTF-8 string because passing invalid UTF-8 to GTK+ is going to
+        // result in a GTK+ error message and, especially, loss of data which
+        // was supposed to be shown in the GUI
+        if ( wxConvUTF8.ToWChar(NULL, 0, s, s.length()) == wxCONV_FAILED )
+        {
+            // warn the programmer that something is probably wrong in his code
+            //
+            // NB: don't include the string in output because chances are that
+            //     this invalid UTF-8 string could result in more errors itself
+            //     if the application shows logs in the GUI and so we get into
+            //     an infinite loop
+            wxLogDebug(_T("Invalid UTF-8 string in wxConvertToGTK()"));
+
+            // but still try to show at least something on the screen
+            wxMBConvUTF8 utf8permissive(wxMBConvUTF8::MAP_INVALID_UTF8_TO_OCTAL);
+            wxWCharBuffer wbuf(utf8permissive.cMB2WC(s));
+            buf = wxConvUTF8.cWC2MB(wbuf);
+        }
+        else // valid UTF-8 string, no need to convert
+        {
+            buf = wxCharBuffer(s);
+        }
     }
-    else // another encoding, use generic conversion class
+    else // !UTF-8
     {
-        wbuf = wxCSConv(enc).cMB2WC(s);
-    }
+        wxWCharBuffer wbuf;
+        if ( enc == wxFONTENCODING_SYSTEM || enc == wxFONTENCODING_DEFAULT )
+        {
+            wbuf = wxConvUI->cMB2WC(s);
+        }
+        else // another encoding, use generic conversion class
+        {
+            wbuf = wxCSConv(enc).cMB2WC(s);
+        }
 
-    wxCharBuffer buf;
-    if ( wbuf )
-        buf = wxConvUTF8.cWC2MB(wbuf);
+        if ( wbuf )
+            buf = wxConvUTF8.cWC2MB(wbuf);
+    }
 
     return buf;
 }
@@ -257,3 +268,18 @@ int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
     return tag;
 }
 
+
+
+// ----------------------------------------------------------------------------
+// wxPlatformInfo-related
+// ----------------------------------------------------------------------------
+
+wxPortId wxGUIAppTraits::GetToolkitVersion(int *verMaj, int *verMin) const
+{
+    if ( verMaj )
+        *verMaj = gtk_major_version;
+    if ( verMin )
+        *verMin = gtk_minor_version;
+
+    return wxPORT_GTK;
+}