don't crash trying to dereference NULL m_selection (happens when showing a grid witho...

[wxWidgets.git] / src / generic / progdlgg.cpp

diff --git a/src/generic/progdlgg.cpp b/src/generic/progdlgg.cpp
index cbccd89a6121bd5be0042194bbbe1f2b44fcae48..c6ca37e085d5493a04e66fa512ecefb7dcc23717 100644 (file)
--- a/src/generic/progdlgg.cpp
+++ b/src/generic/progdlgg.cpp
@@ -67,19 +67,17 @@ static void SetTimeLabel(unsigned long val, wxStaticText *label);
 BEGIN_EVENT_TABLE(wxProgressDialog, wxDialog)
     EVT_BUTTON(wxID_CANCEL, wxProgressDialog::OnCancel)
 
-    EVT_SHOW(wxProgressDialog::OnShow)
-
     EVT_CLOSE(wxProgressDialog::OnClose)
 END_EVENT_TABLE()
 
 IMPLEMENT_CLASS(wxProgressDialog, wxDialog)
 
 // ============================================================================
-// implementation
+// wxProgressDialog implementation
 // ============================================================================
 
 // ----------------------------------------------------------------------------
-// wxProgressDialog
+// wxProgressDialog creation
 // ----------------------------------------------------------------------------
 
 wxProgressDialog::wxProgressDialog(wxString const &title,
@@ -87,10 +85,11 @@ wxProgressDialog::wxProgressDialog(wxString const &title,
                                    int maximum,
                                    wxWindow *parent,
                                    int style)
-                : wxDialog(parent, -1, title,
-                           wxDefaultPosition, wxDefaultSize,
-                           wxDEFAULT_DIALOG_STYLE | wxDIALOG_NO_PARENT)
+                : wxDialog(parent, -1, title)
 {
+    // we may disappear at any moment, let the others know about it
+    SetExtraStyle(GetExtraStyle() | wxWS_EX_TRANSIENT);
+
     m_windowStyle |= style;
 
     bool hasAbortButton = (style & wxPD_CAN_ABORT) != 0;
@@ -109,6 +108,13 @@ wxProgressDialog::wxProgressDialog(wxString const &title,
     m_state = hasAbortButton ? Continue : Uncancelable;
     m_maximum = maximum;
 
+#ifdef __WXMSW__
+    // we can't have values > 65,536 in the progress control under Windows, so
+    // scale everything down
+    m_factor = m_maximum / 65536 + 1;
+    m_maximum /= m_factor;
+#endif // __WXMSW__
+
     m_parentTop = parent;
     while ( m_parentTop && m_parentTop->GetParent() )
     {
@@ -118,7 +124,7 @@ wxProgressDialog::wxProgressDialog(wxString const &title,
     wxLayoutConstraints *c;
 
     wxClientDC dc(this);
-    dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+    dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
     long widthText;
     dc.GetTextExtent(message, &widthText, NULL, NULL, NULL, NULL);
 
@@ -141,7 +147,7 @@ wxProgressDialog::wxProgressDialog(wxString const &title,
         // note that we can't use wxGA_SMOOTH because it happens to also mean
         // wxDIALOG_MODAL and will cause the dialog to be modal. Have an extra
         // style argument to wxProgressDialog, perhaps.
-        m_gauge = new wxGauge(this, -1, maximum,
+        m_gauge = new wxGauge(this, -1, m_maximum,
                               wxDefaultPosition, wxDefaultSize,
                               wxGA_HORIZONTAL);
 
@@ -213,16 +219,17 @@ wxProgressDialog::wxProgressDialog(wxString const &title,
 #endif // MSW/!MSW
         c->bottom.SameAs(this, wxBottom, 2*LAYOUT_Y_MARGIN);
 
-        wxSize sizeBtn = wxButton::GetDefaultSize();
-        c->width.Absolute(sizeBtn.x);
-        c->height.Absolute(sizeBtn.y);
+        c->width.AsIs();
+        c->height.AsIs();
 
         m_btnAbort->SetConstraints(c);
 
-        sizeDlg.y += 2*LAYOUT_Y_MARGIN + sizeBtn.y;
+        sizeDlg.y += 2*LAYOUT_Y_MARGIN + wxButton::GetDefaultSize().y;
     }
-    else
+    else // no "Cancel" button
+    {
         m_btnAbort = (wxButton *)NULL;
+    }
 
     SetAutoLayout(TRUE);
     Layout();
@@ -261,6 +268,7 @@ wxProgressDialog::wxProgressDialog(wxString const &title,
 
     // Update the display (especially on X, GTK)
     wxYield();
+    wxYield();
 
 #ifdef __WXMAC__
     MacUpdateImmediately();
@@ -300,26 +308,32 @@ wxStaticText *wxProgressDialog::CreateLabel(const wxString& text,
     return label;
 }
 
+// ----------------------------------------------------------------------------
+// wxProgressDialog operations
+// ----------------------------------------------------------------------------
+
 bool
 wxProgressDialog::Update(int value, const wxString& newmsg)
 {
     wxASSERT_MSG( value == -1 || m_gauge, wxT("cannot update non existent dialog") );
+
+#ifdef __WXMSW__
+    value /= m_factor;
+#endif // __WXMSW__
+
     wxASSERT_MSG( value <= m_maximum, wxT("invalid progress value") );
 
     if ( m_gauge )
+    {
         m_gauge->SetValue(value + 1);
+    }
 
     if ( !newmsg.IsEmpty() )
     {
-#ifdef __WXMSW__
-        // this seems to be necessary or garbage is left when the new label is
-        // longer than the old one
-        m_msg->SetLabel(wxEmptyString);
-#endif // MSW
-
         m_msg->SetLabel(newmsg);
 
         wxYield();
+        wxYield();
     }
 
     if ( (m_elapsed || m_remaining || m_estimated) && (value != 0) )
@@ -333,38 +347,47 @@ wxProgressDialog::Update(int value, const wxString& newmsg)
         SetTimeLabel(remaining, m_remaining);
     }
 
-    if ( (value == m_maximum ) && !(GetWindowStyle() & wxPD_AUTO_HIDE) )
+    if ( (value == m_maximum ) )
     {
-        if ( m_btnAbort )
+        // so that we return TRUE below and that out [Cancel] handler knew what
+        // to do
+        m_state = Finished;
+        if( !(GetWindowStyle() & wxPD_AUTO_HIDE) )
         {
-            // tell the user what he should do...
-            m_btnAbort->SetLabel(_("Close"));
-        }
+            if ( m_btnAbort )
+            {
+                // tell the user what he should do...
+                m_btnAbort->SetLabel(_("Close"));
+            }
 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
-        else // enable the close button to give the user a way to close the dlg
-        {
-            EnableCloseButton(TRUE);
-        }
+            else // enable the close button to give the user a way to close the dlg
+            {
+                EnableCloseButton(TRUE);
+            }
 #endif // __WXMSW__
 
-        if ( !newmsg )
-        {
-            // also provide the finishing message if the application didn't
-            m_msg->SetLabel(_("Done."));
-        }
-
-        // so that we return TRUE below and that out [Cancel] handler knew what
-        // to do
-        m_state = Finished;
+            if ( !newmsg )
+            {
+                // also provide the finishing message if the application didn't
+                m_msg->SetLabel(_("Done."));
+            }
 
-        wxYield();
+            wxYield();
+            wxYield();
 
-        (void)ShowModal();
+            (void)ShowModal();
+        }
+        else
+        {
+            Hide();
+            ReenableOtherWindows();
+        }
     }
     else
     {
         // update the display
         wxYield();
+        wxYield();
     }
 
 #ifdef __WXMAC__
@@ -374,6 +397,15 @@ wxProgressDialog::Update(int value, const wxString& newmsg)
     return m_state != Canceled;
 }
 
+void wxProgressDialog::Resume()
+{
+    m_state = Continue;
+
+    // it may have been disabled by OnCancel(), so enable it back to let the
+    // user interrupt us again if needed
+    m_btnAbort->Enable();
+}
+
 // ----------------------------------------------------------------------------
 // event handlers
 // ----------------------------------------------------------------------------
@@ -417,16 +449,6 @@ void wxProgressDialog::OnClose(wxCloseEvent& event)
     }
 }
 
-void wxProgressDialog::OnShow(wxShowEvent& event)
-{
-    // if the dialog is being hidden, it was closed, so reenable other windows
-    // now
-    if ( event.GetShow() )
-    {
-        ReenableOtherWindows();
-    }
-}
-
 // ----------------------------------------------------------------------------
 // destruction
 // ----------------------------------------------------------------------------