X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8907154c1a8a6882c6797d1f16393ddfb23e7f3a..e91e1e3d5cab263883c1cee1689c898b8f7c4ecd:/include/wx/gbsizer.h

diff --git a/include/wx/gbsizer.h b/include/wx/gbsizer.h
index 6ceeb9311f..dea46c15ab 100644
--- a/include/wx/gbsizer.h
+++ b/include/wx/gbsizer.h
@@ -1,12 +1,11 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        gbsizer.h
+// Name:        wx/gbsizer.h
 // Purpose:     wxGridBagSizer:  A sizer that can lay out items in a grid,
 //              with items at specified cells, and with the option of row
 //              and/or column spanning
 //
 // Author:      Robin Dunn
 // Created:     03-Nov-2003
-// RCS-ID:      $Id$
 // Copyright:   (c) Robin Dunn
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
@@ -28,7 +27,7 @@
 // is used for this and also for wxGridCellCoords.
 //---------------------------------------------------------------------------
 
-class WXDLLEXPORT wxGBPosition
+class WXDLLIMPEXP_CORE wxGBPosition
 {
 public:
     wxGBPosition() : m_row(0), m_col(0) {}
@@ -50,65 +49,106 @@ private:
 };
 
 
-class WXDLLEXPORT wxGBSpan
+class WXDLLIMPEXP_CORE wxGBSpan
 {
 public:
-    wxGBSpan() : m_rowspan(1), m_colspan(1) {}
-    wxGBSpan(int rowspan, int colspan) : m_rowspan(rowspan), m_colspan(colspan) {}
+    wxGBSpan() { Init(); }
+    wxGBSpan(int rowspan, int colspan)
+    {
+        // Initialize the members to valid values as not doing it may result in
+        // infinite loop in wxGBSizer code if the user passed 0 for any of
+        // them, see #12934.
+        Init();
+
+        SetRowspan(rowspan);
+        SetColspan(colspan);
+    }
 
     // default copy ctor and assignment operator are okay.
 
+    // Factor constructor creating an invalid wxGBSpan: this is mostly supposed
+    // to be used as return value for functions returning wxGBSpan in case of
+    // errors.
+    static wxGBSpan Invalid()
+    {
+        return wxGBSpan(NULL);
+    }
+
     int GetRowspan() const { return m_rowspan; }
     int GetColspan() const { return m_colspan; }
-    void SetRowspan(int rowspan) { m_rowspan = rowspan; }
-    void SetColspan(int colspan) { m_colspan = colspan; }
+    void SetRowspan(int rowspan)
+    {
+        wxCHECK_RET( rowspan > 0, "Row span should be strictly positive" );
+
+        m_rowspan = rowspan;
+    }
+
+    void SetColspan(int colspan)
+    {
+        wxCHECK_RET( colspan > 0, "Column span should be strictly positive" );
+
+        m_colspan = colspan;
+    }
 
     bool operator==(const wxGBSpan& o) const { return m_rowspan == o.m_rowspan && m_colspan == o.m_colspan; }
     bool operator!=(const wxGBSpan& o) const { return !(*this == o); }
 
 private:
+    // This private ctor is used by Invalid() only.
+    wxGBSpan(struct InvalidCtorTag*)
+    {
+        m_rowspan =
+        m_colspan = -1;
+    }
+
+    void Init()
+    {
+        m_rowspan =
+        m_colspan = 1;
+    }
+
     int m_rowspan;
     int m_colspan;
 };
 
 
-extern WXDLLEXPORT_DATA(const wxGBSpan) wxDefaultSpan;
+extern WXDLLIMPEXP_DATA_CORE(const wxGBSpan) wxDefaultSpan;
 
 
 //---------------------------------------------------------------------------
 // wxGBSizerItem
 //---------------------------------------------------------------------------
 
-class WXDLLEXPORT wxGridBagSizer;
+class WXDLLIMPEXP_FWD_CORE wxGridBagSizer;
 
 
-class WXDLLEXPORT wxGBSizerItem : public wxSizerItem
+class WXDLLIMPEXP_CORE wxGBSizerItem : public wxSizerItem
 {
 public:
     // spacer
     wxGBSizerItem( int width,
                    int height,
                    const wxGBPosition& pos,
-                   const wxGBSpan& span,
-                   int flag,
-                   int border,
-                   wxObject* userData);
+                   const wxGBSpan& span=wxDefaultSpan,
+                   int flag=0,
+                   int border=0,
+                   wxObject* userData=NULL);
 
     // window
     wxGBSizerItem( wxWindow *window,
                    const wxGBPosition& pos,
-                   const wxGBSpan& span,
-                   int flag,
-                   int border,
-                   wxObject* userData );
+                   const wxGBSpan& span=wxDefaultSpan,
+                   int flag=0,
+                   int border=0,
+                   wxObject* userData=NULL );
 
     // subsizer
     wxGBSizerItem( wxSizer *sizer,
                    const wxGBPosition& pos,
-                   const wxGBSpan& span,
-                   int flag,
-                   int border,
-                   wxObject* userData );
+                   const wxGBSpan& span=wxDefaultSpan,
+                   int flag=0,
+                   int border=0,
+                   wxObject* userData=NULL );
 
     // default ctor
     wxGBSizerItem();
@@ -134,7 +174,7 @@ public:
     // is successful and after the next Layout the item will be resized.
     bool SetSpan( const wxGBSpan& span );
 
-    // Returns true if this item and the other item instersect
+    // Returns true if this item and the other item intersect
     bool Intersects(const wxGBSizerItem& other);
 
     // Returns true if the given pos/span would intersect with this item.
@@ -156,7 +196,7 @@ protected:
 
 private:
     DECLARE_DYNAMIC_CLASS(wxGBSizerItem)
-    DECLARE_NO_COPY_CLASS(wxGBSizerItem)
+    wxDECLARE_NO_COPY_CLASS(wxGBSizerItem);
 };
 
 
@@ -165,7 +205,7 @@ private:
 //---------------------------------------------------------------------------
 
 
-class WXDLLEXPORT wxGridBagSizer : public wxFlexGridSizer
+class WXDLLIMPEXP_CORE wxGridBagSizer : public wxFlexGridSizer
 {
 public:
     wxGridBagSizer(int vgap = 0, int hgap = 0 );
@@ -286,6 +326,7 @@ public:
 
 protected:
     wxGBPosition FindEmptyCell();
+    void AdjustForOverflow();
 
     wxSize m_emptyCellSize;
 
@@ -293,7 +334,7 @@ protected:
 private:
 
     DECLARE_CLASS(wxGridBagSizer)
-    DECLARE_NO_COPY_CLASS(wxGridBagSizer)
+    wxDECLARE_NO_COPY_CLASS(wxGridBagSizer);
 };
 
 //---------------------------------------------------------------------------