Don't call wxTextMeasure::BeginMeasuring() when using non-native wxDC.

[wxWidgets.git] / include / wx / headercol.h

diff --git a/include/wx/headercol.h b/include/wx/headercol.h
index d82fbff2e528d1bb134c10ce83504f2be25c498d..58736edb0262b3b00a5b6ba9fb9994ea3968879e 100644 (file)
--- a/include/wx/headercol.h
+++ b/include/wx/headercol.h
@@ -13,6 +13,8 @@
 
 #include "wx/bitmap.h"
 
 
 #include "wx/bitmap.h"
 

+#if wxUSE_HEADERCTRL
+

 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------


@@ -20,7 +22,10 @@
 enum
 {
     // special value for column width meaning unspecified/default
 enum
 {
     // special value for column width meaning unspecified/default

-    wxCOL_WIDTH_DEFAULT = -1
+    wxCOL_WIDTH_DEFAULT = -1,
+
+    // size the column automatically to fit all values
+    wxCOL_WIDTH_AUTOSIZE = -2

 };
 
 // bit masks for the various column attributes
 };
 
 // bit masks for the various column attributes


@@ -43,11 +48,11 @@ enum
 };
 
 // ----------------------------------------------------------------------------
 };
 
 // ----------------------------------------------------------------------------

-// wxHeaderColumnBase: interface for a column in a header of controls such as
-//                     wxListCtrl, wxDataViewCtrl or wxGrid
+// wxHeaderColumn: interface for a column in a header of controls such as
+//                 wxListCtrl, wxDataViewCtrl or wxGrid

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-class WXDLLIMPEXP_CORE wxHeaderColumnBase : public wxObject
+class WXDLLIMPEXP_CORE wxHeaderColumn

 {
 public:
     // ctors and dtor
 {
 public:
     // ctors and dtor


@@ -67,106 +72,218 @@ public:
                    int flags = wxCOL_DEFAULT_FLAGS);
     */
 
                    int flags = wxCOL_DEFAULT_FLAGS);
     */
 

+    // virtual dtor for the base class to avoid gcc warnings even though we
+    // don't normally delete the objects of this class via a pointer to
+    // wxHeaderColumn so it's not necessary, strictly speaking
+    virtual ~wxHeaderColumn() { }
+
+    // getters for various attributes
+    // ------------------------------

 
 

-    // setters and getters for various attributes
-    // ------------------------------------------
+    // notice that wxHeaderColumn only provides getters as this is all the
+    // wxHeaderCtrl needs, various derived class must also provide some way to
+    // change these attributes but this can be done either at the column level
+    // (in which case they should inherit from wxSettableHeaderColumn) or via
+    // the methods of the main control in which case you don't need setters in
+    // the column class at all

 
     // title is the string shown for this column
 
     // title is the string shown for this column

-    virtual void SetTitle(const wxString& title) = 0;

     virtual wxString GetTitle() const = 0;
 
     // bitmap shown (instead of text) in the column header
     virtual wxString GetTitle() const = 0;
 
     // bitmap shown (instead of text) in the column header

-    virtual void SetBitmap(const wxBitmap& bitmap) = 0;

     virtual wxBitmap GetBitmap() const = 0;                                   \
 
     // width of the column in pixels, can be set to wxCOL_WIDTH_DEFAULT meaning
     // unspecified/default
     virtual wxBitmap GetBitmap() const = 0;                                   \
 
     // width of the column in pixels, can be set to wxCOL_WIDTH_DEFAULT meaning
     // unspecified/default

-    virtual void SetWidth(int width) = 0;

     virtual int GetWidth() const = 0;
 
     virtual int GetWidth() const = 0;
 

-    // minimal width can be set for resizeable columns to forbid resizing them
+    // minimal width can be set for resizable columns to forbid resizing them

     // below the specified size (set to 0 to remove)
     // below the specified size (set to 0 to remove)

-    virtual void SetMinWidth(int minWidth) = 0;

     virtual int GetMinWidth() const = 0;
 
     // alignment of the text: wxALIGN_CENTRE, wxALIGN_LEFT or wxALIGN_RIGHT
     virtual int GetMinWidth() const = 0;
 
     // alignment of the text: wxALIGN_CENTRE, wxALIGN_LEFT or wxALIGN_RIGHT

-    virtual void SetAlignment(wxAlignment align) = 0;

     virtual wxAlignment GetAlignment() const = 0;
 
     virtual wxAlignment GetAlignment() const = 0;
 

-    // arbitrary client data associated with the column (currently only
-    // implemented in MSW because it is used in MSW wxDataViewCtrl
-    // implementation)
-    virtual void SetClientData(wxUIntPtr WXUNUSED(data))
-        { wxFAIL_MSG("not implemented"); }
-    virtual wxUIntPtr GetClientData() const
-        { return 0; }
-

 
     // flags manipulations:
     // --------------------
 
 
     // flags manipulations:
     // --------------------
 

-    // notice that while we make Set/GetFlags() pure virtual here and implement
-    // the individual flags access in terms of them, for some derived classes
-    // it is more natural to implement access to each flag individually, in
-    // which case they can use SetIndividualFlags() and GetFromIndividualFlags() 
-    // below to implement Set/GetFlags()
+    // notice that while we make GetFlags() pure virtual here and implement the
+    // individual flags access in terms of it, for some derived classes it is
+    // more natural to implement access to each flag individually, in which
+    // case they can use our GetFromIndividualFlags() helper below to implement
+    // GetFlags()

 
 

-    // set or retrieve all column flags at once: combination of wxCOL_XXX
-    // values above
-    virtual void SetFlags(int flags) = 0;
+    // retrieve all column flags at once: combination of wxCOL_XXX values above

     virtual int GetFlags() const = 0;
 
     virtual int GetFlags() const = 0;
 

-    // change, set, clear, toggle or test for any individual flag
-    void ChangeFlag(int flag, bool set);
-    void SetFlag(int flag);
-    void ClearFlag(int flag);
-    void ToggleFlag(int flag);
-

     bool HasFlag(int flag) const { return (GetFlags() & flag) != 0; }
 
 
     // wxCOL_RESIZABLE
     bool HasFlag(int flag) const { return (GetFlags() & flag) != 0; }
 
 
     // wxCOL_RESIZABLE

-    virtual void SetResizeable(bool resizeable)
-        { ChangeFlag(wxCOL_RESIZABLE, resizeable); }

     virtual bool IsResizeable() const
         { return HasFlag(wxCOL_RESIZABLE); }
 
     // wxCOL_SORTABLE
     virtual bool IsResizeable() const
         { return HasFlag(wxCOL_RESIZABLE); }
 
     // wxCOL_SORTABLE

-    virtual void SetSortable(bool sortable)
-        { ChangeFlag(wxCOL_SORTABLE, sortable); }

     virtual bool IsSortable() const
         { return HasFlag(wxCOL_SORTABLE); }
 
     // wxCOL_REORDERABLE
     virtual bool IsSortable() const
         { return HasFlag(wxCOL_SORTABLE); }
 
     // wxCOL_REORDERABLE

-    virtual void SetReorderable(bool reorderable)
-        { ChangeFlag(wxCOL_REORDERABLE, reorderable); }

     virtual bool IsReorderable() const
         { return HasFlag(wxCOL_REORDERABLE); }
 
     // wxCOL_HIDDEN
     virtual bool IsReorderable() const
         { return HasFlag(wxCOL_REORDERABLE); }
 
     // wxCOL_HIDDEN

-    virtual void SetHidden(bool hidden)
-        { ChangeFlag(wxCOL_HIDDEN, hidden); }

     virtual bool IsHidden() const
         { return HasFlag(wxCOL_HIDDEN); }
     virtual bool IsHidden() const
         { return HasFlag(wxCOL_HIDDEN); }

+    bool IsShown() const
+        { return !IsHidden(); }
+
+
+    // sorting
+    // -------
+
+    // return true if the column is the one currently used for sorting
+    virtual bool IsSortKey() const = 0;

 
     // for sortable columns indicate whether we should sort in ascending or
 
     // for sortable columns indicate whether we should sort in ascending or

-    // descending order
+    // descending order (this should only be taken into account if IsSortKey())
+    virtual bool IsSortOrderAscending() const = 0;
+
+protected:
+    // helper for the class overriding IsXXX()
+    int GetFromIndividualFlags() const;
+};
+
+// ----------------------------------------------------------------------------
+// wxSettableHeaderColumn: column which allows to change its fields too
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxSettableHeaderColumn : public wxHeaderColumn
+{
+public:
+    virtual void SetTitle(const wxString& title) = 0;
+    virtual void SetBitmap(const wxBitmap& bitmap) = 0;
+    virtual void SetWidth(int width) = 0;
+    virtual void SetMinWidth(int minWidth) = 0;
+    virtual void SetAlignment(wxAlignment align) = 0;
+
+    // see comment for wxHeaderColumn::GetFlags() about the relationship
+    // between SetFlags() and Set{Sortable,Reorderable,...}
+
+    // change, set, clear, toggle or test for any individual flag
+    virtual void SetFlags(int flags) = 0;
+    void ChangeFlag(int flag, bool set);
+    void SetFlag(int flag);
+    void ClearFlag(int flag);
+    void ToggleFlag(int flag);
+
+    virtual void SetResizeable(bool resizable)
+        { ChangeFlag(wxCOL_RESIZABLE, resizable); }
+    virtual void SetSortable(bool sortable)
+        { ChangeFlag(wxCOL_SORTABLE, sortable); }
+    virtual void SetReorderable(bool reorderable)
+        { ChangeFlag(wxCOL_REORDERABLE, reorderable); }
+    virtual void SetHidden(bool hidden)
+        { ChangeFlag(wxCOL_HIDDEN, hidden); }
+
+    // This function can be called to indicate that this column is not used for
+    // sorting any more. Under some platforms it's not necessary to do anything
+    // in this case as just setting another column as a sort key takes care of
+    // everything but under MSW we currently need to call this explicitly to
+    // reset the sort indicator displayed on the column.
+    virtual void UnsetAsSortKey() { }
+

     virtual void SetSortOrder(bool ascending) = 0;
     void ToggleSortOrder() { SetSortOrder(!IsSortOrderAscending()); }
     virtual void SetSortOrder(bool ascending) = 0;
     void ToggleSortOrder() { SetSortOrder(!IsSortOrderAscending()); }

-    virtual bool IsSortOrderAscending() const = 0;

 
 protected:
 
 protected:

-    // helpers for the class overriding Set/IsXXX()
+    // helper for the class overriding individual SetXXX() methods instead of
+    // overriding SetFlags()

     void SetIndividualFlags(int flags);
     void SetIndividualFlags(int flags);

-    int GetFromIndividualFlags() const;

 };
 
 };
 

-#if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
-    #include "wx/msw/headercol.h"
-#elif 0 // TODO
-    #define wxHAS_GENERIC_HEADERCOL
-    #include "wx/generic/headercolg.h"
-#endif
+// ----------------------------------------------------------------------------
+// wxHeaderColumnSimple: trivial generic implementation of wxHeaderColumn
+// ----------------------------------------------------------------------------
+
+class wxHeaderColumnSimple : public wxSettableHeaderColumn
+{
+public:
+    // ctors and dtor
+    wxHeaderColumnSimple(const wxString& title,
+                         int width = wxCOL_WIDTH_DEFAULT,
+                         wxAlignment align = wxALIGN_NOT,
+                         int flags = wxCOL_DEFAULT_FLAGS)
+        : m_title(title),
+          m_width(width),
+          m_align(align),
+          m_flags(flags)
+    {
+        Init();
+    }
+
+    wxHeaderColumnSimple(const wxBitmap& bitmap,
+                         int width = wxCOL_WIDTH_DEFAULT,
+                         wxAlignment align = wxALIGN_CENTER,
+                         int flags = wxCOL_DEFAULT_FLAGS)
+        : m_bitmap(bitmap),
+          m_width(width),
+          m_align(align),
+          m_flags(flags)
+    {
+        Init();
+    }
+
+    // implement base class pure virtuals
+    virtual void SetTitle(const wxString& title) { m_title = title; }
+    virtual wxString GetTitle() const { return m_title; }
+
+    virtual void SetBitmap(const wxBitmap& bitmap) { m_bitmap = bitmap; }
+    wxBitmap GetBitmap() const { return m_bitmap; }
+
+    virtual void SetWidth(int width) { m_width = width; }
+    virtual int GetWidth() const { return m_width; }
+
+    virtual void SetMinWidth(int minWidth) { m_minWidth = minWidth; }
+    virtual int GetMinWidth() const { return m_minWidth; }
+
+    virtual void SetAlignment(wxAlignment align) { m_align = align; }
+    virtual wxAlignment GetAlignment() const { return m_align; }
+
+    virtual void SetFlags(int flags) { m_flags = flags; }
+    virtual int GetFlags() const { return m_flags; }
+
+    virtual bool IsSortKey() const { return m_sort; }
+    virtual void UnsetAsSortKey() { m_sort = false; }
+
+    virtual void SetSortOrder(bool ascending)
+    {
+        m_sort = true;
+        m_sortAscending = ascending;
+    }
+
+    virtual bool IsSortOrderAscending() const { return m_sortAscending; }
+
+private:
+    // common part of all ctors
+    void Init()
+    {
+        m_minWidth = 0;
+        m_sort = false;
+        m_sortAscending = true;
+    }
+
+    wxString m_title;
+    wxBitmap m_bitmap;
+    int m_width,
+        m_minWidth;
+    wxAlignment m_align;
+    int m_flags;
+    bool m_sort,
+         m_sortAscending;
+};
+
+#endif // wxUSE_HEADERCTRL

 
 #endif // _WX_HEADERCOL_H_
 
 
 #endif // _WX_HEADERCOL_H_