Fixed premature exit of helpview sample and utility

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

diff --git a/src/gtk/collpane.cpp b/src/gtk/collpane.cpp
index edd737d066fab27151d30cdf19bbddcdc2350297..93b0be56e1f00c3f72aed99199db10e4c5683365 100644 (file)
--- a/src/gtk/collpane.cpp
+++ b/src/gtk/collpane.cpp
@@ -17,15 +17,18 @@
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 

-#ifdef __WXGTK24__
+#if wxUSE_COLLPANE && defined(__WXGTK24__) && !defined(__WXUNIVERSAL__)

 
 #include "wx/collpane.h"
 
 #include "wx/collpane.h"

+#include "wx/toplevel.h"
+#include "wx/sizer.h"
+#include "wx/panel.h"
+

 #include "wx/gtk/private.h"
 #include "wx/gtk/private.h"

+#include "wx/gtk/win_gtk.h"

 
 #include <gtk/gtkexpander.h>
 
 
 #include <gtk/gtkexpander.h>
 

-const wxChar wxCollapsiblePaneNameStr[] = wxT("CollapsiblePane");
-

 // ============================================================================
 // implementation
 // ============================================================================
 // ============================================================================
 // implementation
 // ============================================================================


@@ -50,18 +53,16 @@ static void gtk_collapsiblepane_expanded_callback (GObject    *object,
     wxSize sz;
     if ( p->IsExpanded() )
     {
     wxSize sz;
     if ( p->IsExpanded() )
     {

-        // unfortunately there's no clean way to retrieve the minimal size of
-        // the expanded pane in this handler or in other handlers for the
-        // signals generated by user clicks on the GtkExpander button:
-        // p->GetBestSize() or p->GetMinSize() would still return the size for
-        // the collapsed expander even if the collapsed->expanded transition
-        // has already been completed (this because GTK+ queues some resize
-        // calls which still must be processed). So, the only solution to
-        // correctly set the size hints for this window is to calculate the
-        // expanded size ourselves, without relying on p->Get[Best|Min]Size:
-        sz = p->GetMinSize();
-        sz.SetWidth(wxMax(sz.x, p->GetPane()->GetMinSize().x));
-        sz.SetHeight(sz.y + p->GetPane()->GetMinSize().y + 10);
+        // NB: we cannot use the p->GetBestSize() or p->GetMinSize() functions
+        //     here as they would return the size for the collapsed expander
+        //     even if the collapsed->expanded transition has already been
+        //     completed; we solve this problem doing:
+
+        sz = p->m_szCollapsed;
+
+        wxSize panesz = p->GetPane()->GetBestSize();
+        sz.x = wxMax(sz.x, panesz.x);
+        sz.y += gtk_expander_get_spacing(GTK_EXPANDER(p->m_widget)) + panesz.y;

     }
     else // collapsed
     {
     }
     else // collapsed
     {


@@ -72,7 +73,83 @@ static void gtk_collapsiblepane_expanded_callback (GObject    *object,
         sz = p->m_szCollapsed;
     }
 
         sz = p->m_szCollapsed;
     }
 

-    p->OnStateChange(sz);
+    // VERY IMPORTANT:
+    // just calling
+    //          p->OnStateChange(sz);
+    // here would work work BUT:
+    //     1) in the expanded->collapsed transition it provokes a lot of flickering
+    //     2) in the collapsed->expanded transition using the "Change status" wxButton
+    //        in samples/collpane application some strange warnings would be generated
+    //        by the "clearlooks" theme, if that's your theme.
+    //
+    // So we prefer to use some GTK+ native optimized calls, which prevent too many resize
+    // calculations to happen. Note that the following code has been very carefully designed
+    // and tested - be VERY careful when changing it!
+
+    // 1) need to update our size hints
+    // NB: this function call won't actually do any long operation
+    //     (redraw/relayouting/resizing) so that it's flicker-free
+    p->SetMinSize(sz);
+
+    if (p->HasFlag(wxCP_NO_TLW_RESIZE))
+    {
+        // the user asked to explicitely handle the resizing itself...
+        return;
+    }
+
+    wxTopLevelWindow *
+        top = wxDynamicCast(wxGetTopLevelParent(p), wxTopLevelWindow);
+    if ( top && top->GetSizer() )
+    {
+        // 2) recalculate minimal size of the top window
+        wxSize sz = top->GetSizer()->CalcMin();
+
+        if (top->m_mainWidget)
+        {
+            // 3) MAGIC HACK: if you ever used GtkExpander in a GTK+ program you know
+            //    that this magic call is required to make it possible to shrink the
+            //    top level window in the expanded->collapsed transition.
+            //    This may be sometimes undesired but *is* necessary and if you look
+            //    carefully, all GTK+ programs using GtkExpander perform this trick
+            //    (e.g. the standard "open file" dialog of GTK+>=2.4 is not resizeable
+            //     when the expander is collapsed!)
+            gtk_window_set_resizable (GTK_WINDOW (top->m_widget), p->IsExpanded());
+
+            // 4) set size hints: note that this code has been taken and adapted
+            //    from src/gtk/toplevel.cpp
+            GdkGeometry geom;
+
+            geom.min_width = sz.x;
+            geom.min_height = sz.y;
+
+            gtk_window_set_geometry_hints( GTK_WINDOW(top->m_widget),
+                                           (GtkWidget*) NULL,
+                                           &geom,
+                                           GDK_HINT_MIN_SIZE );
+
+            // 5) set size: also this code has been adapted from src/gtk/toplevel.cpp
+            //    to do the size changes immediately and not delaying them in the idle
+            //    time
+            top->m_width = sz.x;
+            top->m_height = sz.y;
+
+            int client_x = top->m_miniEdge;
+            int client_y = top->m_miniEdge + top->m_miniTitle;
+            int client_w = top->m_width - 2*top->m_miniEdge;
+            int client_h = top->m_height - 2*top->m_miniEdge - top->m_miniTitle;
+            if (client_w < 0)
+                client_w = 0;
+            if (client_h < 0)
+                client_h = 0;
+
+            gtk_pizza_set_size( GTK_PIZZA(top->m_mainWidget),
+                                top->m_wxwindow,
+                                client_x, client_y, client_w, client_h );
+
+            gtk_widget_set_size_request( top->m_wxwindow, sz.x, sz.y );
+
+        }
+    }

 
     if ( p->m_bIgnoreNextChange )
     {
 
     if ( p->m_bIgnoreNextChange )
     {


@@ -146,8 +223,8 @@ bool wxCollapsiblePane::Create(wxWindow *parent,
     m_insertCallback = gtk_collapsiblepane_insert_callback;
 
     // this the real "pane"
     m_insertCallback = gtk_collapsiblepane_insert_callback;
 
     // this the real "pane"

-    m_pPane = new wxWindow(this, wxID_ANY, wxDefaultPosition, wxDefaultSize,
-                           wxNO_BORDER);
+    m_pPane = new wxPanel(this, wxID_ANY, wxDefaultPosition, wxDefaultSize,
+                           wxTAB_TRAVERSAL|wxNO_BORDER);

 
     gtk_widget_show( GTK_WIDGET(m_widget) );
     m_parent->DoAddChild( this );
 
     gtk_widget_show( GTK_WIDGET(m_widget) );
     m_parent->DoAddChild( this );


@@ -173,6 +250,7 @@ wxSize wxCollapsiblePane::DoGetBestSize() const
                 (m_widget, &req );
 
         // notice that we do not cache our best size here as it changes
                 (m_widget, &req );
 
         // notice that we do not cache our best size here as it changes

+        // all times the user expands/hide our pane

         return wxSize(req.width, req.height);
     }
 
         return wxSize(req.width, req.height);
     }
 


@@ -206,7 +284,13 @@ bool wxCollapsiblePane::IsCollapsed() const
 void wxCollapsiblePane::SetLabel(const wxString &str)
 {
     if (!gtk_check_version(2,4,0))
 void wxCollapsiblePane::SetLabel(const wxString &str)
 {
     if (!gtk_check_version(2,4,0))

-        gtk_expander_set_label(GTK_EXPANDER(m_widget), str.c_str());
+    {
+        gtk_expander_set_label(GTK_EXPANDER(m_widget), wxGTK_CONV(str));
+
+        // FIXME: we need to update our collapsed width in some way but using GetBestSize()
+        // we may get the size of the control with the pane size summed up if we are expanded!
+        //m_szCollapsed.x = GetBestSize().x;
+    }

     else
         wxGenericCollapsiblePane::SetLabel(str);
 }
     else
         wxGenericCollapsiblePane::SetLabel(str);
 }


@@ -224,12 +308,12 @@ void wxCollapsiblePane::OnSize(wxSizeEvent &ev)
 
     // here we need to resize the pane window otherwise, even if the GtkExpander container
     // is expanded or shrinked, the pane window won't be updated!
 
     // here we need to resize the pane window otherwise, even if the GtkExpander container
     // is expanded or shrinked, the pane window won't be updated!

-    m_pPane->SetSize(ev.GetSize());
+    m_pPane->SetSize(ev.GetSize().x, ev.GetSize().y - m_szCollapsed.y);

 
     // we need to explicitely call m_pPane->Layout() or else it won't correctly relayout
     // (even if SetAutoLayout(true) has been called on it!)
     m_pPane->Layout();
 }
 
 
     // we need to explicitely call m_pPane->Layout() or else it won't correctly relayout
     // (even if SetAutoLayout(true) has been called on it!)
     m_pPane->Layout();
 }
 

-#endif //  __WXGTK24__
+#endif // wxUSE_COLLPANE && defined(__WXGTK24__) && !defined(__WXUNIVERSAL__)