include/wx/bmpcbox.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/bmpcbox.h
   3 // Purpose:     wxBitmapComboBox base header
   4 // Author:      Jaakko Salli
   5 // Modified by:
   6 // Created:     Aug-31-2006
   7 // Copyright:   (c) Jaakko Salli
   8 // RCS-ID:      $Id$
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_BMPCBOX_H_BASE_
  13 #define _WX_BMPCBOX_H_BASE_
  14
  15
  16 #include "wx/defs.h"
  17
  18 #if wxUSE_BITMAPCOMBOBOX
  19
  20 #include "wx/bitmap.h"
  21 #include "wx/window.h"
  22
  23 class WXDLLIMPEXP_FWD_CORE wxItemContainer;
  24
  25 // Define wxBITMAPCOMBOBOX_OWNERDRAWN_BASED for platforms which
  26 // wxBitmapComboBox implementation utilizes ownerdrawn combobox
  27 // (either native or generic).
  28 #if 1
  29     #define wxBITMAPCOMBOBOX_OWNERDRAWN_BASED
  30 #endif
  31
  32 extern WXDLLIMPEXP_DATA_ADV(const wxChar) wxBitmapComboBoxNameStr[];
  33
  34
  35 class WXDLLIMPEXP_ADV wxBitmapComboBoxBase
  36 {
  37 public:
  38     // ctors and such
  39     wxBitmapComboBoxBase() { Init(); }
  40
  41     virtual ~wxBitmapComboBoxBase() { }
  42
  43     // Sets the image for the given item.
  44     virtual void SetItemBitmap(unsigned int n, const wxBitmap& bitmap) = 0;
  45
  46 #if !defined(wxBITMAPCOMBOBOX_OWNERDRAWN_BASED)
  47
  48     // Returns the image of the item with the given index.
  49     virtual wxBitmap GetItemBitmap(unsigned int n) const = 0;
  50
  51     // Returns size of the image used in list
  52     virtual wxSize GetBitmapSize() const = 0;
  53
  54 private:
  55     void Init() {}
  56
  57 #else // wxBITMAPCOMBOBOX_OWNERDRAWN_BASED
  58
  59     // Returns the image of the item with the given index.
  60     virtual wxBitmap GetItemBitmap(unsigned int n) const;
  61
  62     // Returns size of the image used in list
  63     virtual wxSize GetBitmapSize() const
  64     {
  65         return m_usedImgSize;
  66     }
  67
  68 protected:
  69
  70     // Returns pointer to the combobox item container
  71     virtual wxItemContainer* GetItemContainer() = 0;
  72
  73     // Return pointer to the owner-drawn combobox control
  74     virtual wxWindow* GetControl() = 0;
  75
  76     // wxItemContainer functions
  77     void BCBDoClear();
  78     void BCBDoDeleteOneItem(unsigned int n);
  79
  80     void DoSetItemBitmap(unsigned int n, const wxBitmap& bitmap);
  81
  82     void DrawBackground(wxDC& dc, const wxRect& rect, int item, int flags) const;
  83     void DrawItem(wxDC& dc, const wxRect& rect, int item, const wxString& text,
  84                   int flags) const;
  85     wxCoord MeasureItem(size_t item) const;
  86
  87     // Returns true if image size was affected
  88     virtual bool OnAddBitmap(const wxBitmap& bitmap);
  89
  90     // Recalculates amount of empty space needed in front of text
  91     // in control itself. Returns number that can be passed to
  92     // wxOwnerDrawnComboBox::SetCustomPaintWidth() and similar
  93     // functions.
  94     virtual int DetermineIndent();
  95
  96     void UpdateInternals();
  97
  98     wxArrayPtrVoid      m_bitmaps;  // Images associated with items
  99     wxSize              m_usedImgSize;  // Size of bitmaps
 100
 101     int                 m_imgAreaWidth;  // Width and height of area next to text field
 102     int                 m_fontHeight;
 103     int                 m_indent;
 104
 105 private:
 106     void Init();
 107 #endif // !wxBITMAPCOMBOBOX_OWNERDRAWN_BASED/wxBITMAPCOMBOBOX_OWNERDRAWN_BASED
 108 };
 109
 110
 111 #if defined(__WXUNIVERSAL__)
 112     #include "wx/generic/bmpcbox.h"
 113 #elif defined(__WXMSW__)
 114     #include "wx/msw/bmpcbox.h"
 115 #else
 116     #include "wx/generic/bmpcbox.h"
 117 #endif
 118
 119 #endif // wxUSE_BITMAPCOMBOBOX
 120
 121 #endif // _WX_BMPCBOX_H_BASE_