X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/dde19c2180ef8d6415af7bb2492bfcb0a2d5c7e4..890defb4f3a0012a296c69949bf5f93075743e8f:/src/generic/progdlgg.cpp

diff --git a/src/generic/progdlgg.cpp b/src/generic/progdlgg.cpp
index 6677a2ea33..77af0c76aa 100644
--- a/src/generic/progdlgg.cpp
+++ b/src/generic/progdlgg.cpp
@@ -403,8 +403,17 @@ wxProgressDialog::Update(int value, const wxString& newmsg, bool *skip)
                 m_msg->SetLabel(_("Done."));
             }
 
+            wxCHECK_MSG(wxEventLoopBase::GetActive(), false,
+                        "wxProgressDialog::Update needs a running event loop");
+
+            // allow the window to repaint:
+            // NOTE: since we yield only for UI events with this call, there
+            //       should be no side-effects
             wxEventLoopBase::GetActive()->YieldFor(wxEVT_CATEGORY_UI);
 
+            // NOTE: this call results in a new event loop being created
+            //       and to a call to ProcessPendingEvents() (which may generate
+            //       unwanted re-entrancies).
             (void)ShowModal();
         }
         else // auto hide
@@ -451,8 +460,13 @@ bool wxProgressDialog::Pulse(const wxString& newmsg, bool *skip)
 
 bool wxProgressDialog::DoAfterUpdate(bool *skip)
 {
+    wxCHECK_MSG(wxEventLoopBase::GetActive(), false,
+                "wxProgressDialog::DoAfterUpdate needs a running event loop");
+
     // we have to yield because not only we want to update the display but
     // also to process the clicks on the cancel and skip buttons
+    // NOTE: using YieldFor() this call shouldn't give re-entrancy problems
+    //       for event handlers not interested to UI/user-input events.
     wxEventLoopBase::GetActive()->YieldFor(wxEVT_CATEGORY_UI|wxEVT_CATEGORY_USER_INPUT);
 
     Update();
@@ -508,6 +522,22 @@ wxString wxProgressDialog::GetMessage() const
     return m_msg->GetLabel();
 }
 
+void wxProgressDialog::SetRange(int maximum)
+{
+    wxASSERT_MSG(m_gauge, "The dialog should have been constructed with a range > 0");
+    wxASSERT_MSG(maximum > 0, "Invalid range");
+
+    m_gauge->SetRange(maximum);
+    m_maximum = maximum;
+
+#if defined(__WXMSW__) || defined(__WXPM__)
+    // 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__
+}
+
 // ----------------------------------------------------------------------------
 // event handlers
 // ----------------------------------------------------------------------------
@@ -666,12 +696,16 @@ void wxProgressDialog::EnableClose()
 
 void wxProgressDialog::UpdateMessage(const wxString &newmsg)
 {
+    wxCHECK_RET(wxEventLoopBase::GetActive(),
+                "wxProgressDialog::UpdateMessage needs a running event loop");
+
     if ( !newmsg.empty() && newmsg != m_msg->GetLabel() )
     {
         m_msg->SetLabel(newmsg);
 
-        Fit();   // adapt to the new label size
-
+        // allow the window to repaint:
+        // NOTE: since we yield only for UI events with this call, there
+        //       should be no side-effects
         wxEventLoopBase::GetActive()->YieldFor(wxEVT_CATEGORY_UI);
     }
 }