+#if wxDEBUG_LEVEL && wxUSE_STACKWALKER
+
+// private helper class
+class StackDump : public wxStackWalker
+{
+public:
+ StackDump(GtkAssertDialog *dlg) { m_dlg=dlg; }
+
+protected:
+ virtual void OnStackFrame(const wxStackFrame& frame)
+ {
+ wxString fncname = frame.GetName();
+ wxString fncargs = fncname;
+
+ size_t n = fncname.find(wxT('('));
+ if (n != wxString::npos)
+ {
+ // remove arguments from function name
+ fncname.erase(n);
+
+ // remove function name and brackets from arguments
+ fncargs = fncargs.substr(n+1, fncargs.length()-n-2);
+ }
+ else
+ fncargs = wxEmptyString;
+
+ // append this stack frame's info in the dialog
+ if (!frame.GetFileName().empty() || !fncname.empty())
+ gtk_assert_dialog_append_stack_frame(m_dlg,
+ fncname.mb_str(),
+ fncargs.mb_str(),
+ frame.GetFileName().mb_str(),
+ frame.GetLine());
+ }
+
+private:
+ GtkAssertDialog *m_dlg;
+};
+
+// the callback functions must be extern "C" to comply with GTK+ declarations
+extern "C"
+{
+ void get_stackframe_callback(StackDump *dump)
+ {
+ // skip over frames up to including wxOnAssert()
+ dump->ProcessFrames(3);
+ }
+}
+
+#endif // wxDEBUG_LEVEL && wxUSE_STACKWALKER
+
+bool wxGUIAppTraits::ShowAssertDialog(const wxString& msg)
+{
+#if wxDEBUG_LEVEL
+ // under GTK2 we prefer to use a dialog widget written using directly in
+ // GTK+ as use a dialog written using wxWidgets would need the wxWidgets
+ // idle processing to work correctly which might not be the case when
+ // assert happens
+ GtkWidget *dialog = gtk_assert_dialog_new();
+ gtk_assert_dialog_set_message(GTK_ASSERT_DIALOG(dialog), msg.mb_str());
+
+#if wxUSE_STACKWALKER
+ // don't show more than maxLines or we could get a dialog too tall to be
+ // shown on screen: 20 should be ok everywhere as even with 15 pixel high
+ // characters it is still only 300 pixels...
+ static const int maxLines = 20;
+
+ // save current stack frame...
+ StackDump dump(GTK_ASSERT_DIALOG(dialog));
+ dump.SaveStack(maxLines);
+
+ // ...but process it only if the user needs it
+ gtk_assert_dialog_set_backtrace_callback(GTK_ASSERT_DIALOG(dialog),
+ (GtkAssertDialogStackFrameCallback)get_stackframe_callback,
+ &dump);
+#endif // wxUSE_STACKWALKER
+
+ gint result = gtk_dialog_run(GTK_DIALOG (dialog));
+ bool returnCode = false;
+ switch (result)
+ {
+ case GTK_ASSERT_DIALOG_STOP:
+ wxTrap();
+ break;
+ case GTK_ASSERT_DIALOG_CONTINUE:
+ // nothing to do
+ break;
+ case GTK_ASSERT_DIALOG_CONTINUE_SUPPRESSING:
+ // no more asserts
+ returnCode = true;
+ break;
+
+ default:
+ wxFAIL_MSG( wxT("unexpected return code from GtkAssertDialog") );
+ }
+
+ gtk_widget_destroy(dialog);
+ return returnCode;
+#else // !wxDEBUG_LEVEL
+ // this function is never called in this case
+ wxUnusedVar(msg);
+ return false;
+#endif // wxDEBUG_LEVEL/!wxDEBUG_LEVEL
+}
+
projects / wxWidgets.git / blobdiff