src/generic/bmpcboxg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/bmpcboxg.cpp
   3 // Purpose:     wxBitmapComboBox
   4 // Author:      Jaakko Salli
   5 // Modified by:
   6 // Created:     Aug-31-2006
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2005 Jaakko Salli
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #if wxUSE_BITMAPCOMBOBOX
  27
  28 #include "wx/bmpcbox.h"
  29
  30 #if defined(wxGENERIC_BITMAPCOMBOBOX)
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/log.h"
  34 #endif
  35
  36 #include "wx/odcombo.h"
  37 #include "wx/settings.h"
  38 #include "wx/dc.h"
  39
  40 #if wxUSE_IMAGE
  41     #include "wx/image.h"
  42 #endif
  43
  44
  45 #define IMAGE_SPACING_CTRL_VERTICAL 7  // Spacing used in control size calculation
  46
  47
  48 // ============================================================================
  49 // implementation
  50 // ============================================================================
  51
  52
  53 BEGIN_EVENT_TABLE(wxBitmapComboBox, wxOwnerDrawnComboBox)
  54     EVT_SIZE(wxBitmapComboBox::OnSize)
  55 END_EVENT_TABLE()
  56
  57
  58 IMPLEMENT_DYNAMIC_CLASS(wxBitmapComboBox, wxOwnerDrawnComboBox)
  59
  60 void wxBitmapComboBox::Init()
  61 {
  62     m_inResize = false;
  63 }
  64
  65 wxBitmapComboBox::wxBitmapComboBox(wxWindow *parent,
  66                                   wxWindowID id,
  67                                   const wxString& value,
  68                                   const wxPoint& pos,
  69                                   const wxSize& size,
  70                                   const wxArrayString& choices,
  71                                   long style,
  72                                   const wxValidator& validator,
  73                                   const wxString& name)
  74     : wxOwnerDrawnComboBox(),
  75       wxBitmapComboBoxBase()
  76 {
  77     Init();
  78
  79     Create(parent,id,value,pos,size,choices,style,validator,name);
  80 }
  81
  82 bool wxBitmapComboBox::Create(wxWindow *parent,
  83                               wxWindowID id,
  84                               const wxString& value,
  85                               const wxPoint& pos,
  86                               const wxSize& size,
  87                               const wxArrayString& choices,
  88                               long style,
  89                               const wxValidator& validator,
  90                               const wxString& name)
  91 {
  92     if ( !wxOwnerDrawnComboBox::Create(parent, id, value,
  93                                        pos, size,
  94                                        choices, style,
  95                                        validator, name) )
  96     {
  97         return false;
  98     }
  99
 100     UpdateInternals();
 101
 102     return true;
 103 }
 104
 105 bool wxBitmapComboBox::Create(wxWindow *parent,
 106                               wxWindowID id,
 107                               const wxString& value,
 108                               const wxPoint& pos,
 109                               const wxSize& size,
 110                               int n,
 111                               const wxString choices[],
 112                               long style,
 113                               const wxValidator& validator,
 114                               const wxString& name)
 115 {
 116     if ( !wxOwnerDrawnComboBox::Create(parent, id, value,
 117                                        pos, size, n,
 118                                        choices, style,
 119                                        validator, name) )
 120     {
 121         return false;
 122     }
 123
 124     UpdateInternals();
 125
 126     return true;
 127 }
 128
 129 wxBitmapComboBox::~wxBitmapComboBox()
 130 {
 131     DoClear();
 132 }
 133
 134 // ----------------------------------------------------------------------------
 135 // Item manipulation
 136 // ----------------------------------------------------------------------------
 137
 138 void wxBitmapComboBox::SetItemBitmap(unsigned int n, const wxBitmap& bitmap)
 139 {
 140     OnAddBitmap(bitmap);
 141     DoSetItemBitmap(n, bitmap);
 142
 143     if ( (int)n == GetSelection() )
 144         Refresh();
 145 }
 146
 147 int wxBitmapComboBox::DoInsertItems(const wxArrayStringsAdapter & items,
 148                                     unsigned int pos,
 149                                     void **clientData, wxClientDataType type)
 150 {
 151     const unsigned int numItems = items.GetCount();
 152     const unsigned int countNew = GetCount() + numItems;
 153
 154     wxASSERT( numItems == 1 || !HasFlag(wxCB_SORT) );  // Sanity check
 155
 156     m_bitmaps.Alloc(countNew);
 157
 158     for ( unsigned int i = 0; i < numItems; i++ )
 159     {
 160         m_bitmaps.Insert(new wxBitmap(wxNullBitmap), pos + i);
 161     }
 162
 163     const int index = wxOwnerDrawnComboBox::DoInsertItems(items, pos,
 164                                                           clientData, type);
 165
 166     if ( index == wxNOT_FOUND )
 167     {
 168         for ( int i = numItems-1; i >= 0; i-- )
 169             BCBDoDeleteOneItem(pos + i);
 170     }
 171     else if ( ((unsigned int)index) != pos )
 172     {
 173         // Move pre-inserted empty bitmap into correct position
 174         // (usually happens when combo box has wxCB_SORT style)
 175         wxBitmap* bmp = static_cast<wxBitmap*>(m_bitmaps[pos]);
 176         m_bitmaps.RemoveAt(pos);
 177         m_bitmaps.Insert(bmp, index);
 178     }
 179
 180     return index;
 181 }
 182
 183 int wxBitmapComboBox::Append(const wxString& item, const wxBitmap& bitmap)
 184 {
 185     const int n = wxOwnerDrawnComboBox::Append(item);
 186     if(n != wxNOT_FOUND)
 187         SetItemBitmap(n, bitmap);
 188     return n;
 189 }
 190
 191 int wxBitmapComboBox::Append(const wxString& item, const wxBitmap& bitmap,
 192                              void *clientData)
 193 {
 194     const int n = wxOwnerDrawnComboBox::Append(item, clientData);
 195     if(n != wxNOT_FOUND)
 196         SetItemBitmap(n, bitmap);
 197     return n;
 198 }
 199
 200 int wxBitmapComboBox::Append(const wxString& item, const wxBitmap& bitmap,
 201                              wxClientData *clientData)
 202 {
 203     const int n = wxOwnerDrawnComboBox::Append(item, clientData);
 204     if(n != wxNOT_FOUND)
 205         SetItemBitmap(n, bitmap);
 206     return n;
 207 }
 208
 209 int wxBitmapComboBox::Insert(const wxString& item,
 210                              const wxBitmap& bitmap,
 211                              unsigned int pos)
 212 {
 213     const int n = wxOwnerDrawnComboBox::Insert(item, pos);
 214     if(n != wxNOT_FOUND)
 215         SetItemBitmap(n, bitmap);
 216     return n;
 217 }
 218
 219 int wxBitmapComboBox::Insert(const wxString& item, const wxBitmap& bitmap,
 220                              unsigned int pos, void *clientData)
 221 {
 222     const int n = wxOwnerDrawnComboBox::Insert(item, pos, clientData);
 223     if(n != wxNOT_FOUND)
 224         SetItemBitmap(n, bitmap);
 225     return n;
 226 }
 227
 228 int wxBitmapComboBox::Insert(const wxString& item, const wxBitmap& bitmap,
 229                              unsigned int pos, wxClientData *clientData)
 230 {
 231     const int n = wxOwnerDrawnComboBox::Insert(item, pos, clientData);
 232     if(n != wxNOT_FOUND)
 233         SetItemBitmap(n, bitmap);
 234     return n;
 235 }
 236
 237 void wxBitmapComboBox::DoClear()
 238 {
 239     wxOwnerDrawnComboBox::DoClear();
 240     wxBitmapComboBoxBase::BCBDoClear();
 241 }
 242
 243 void wxBitmapComboBox::DoDeleteOneItem(unsigned int n)
 244 {
 245     wxOwnerDrawnComboBox::DoDeleteOneItem(n);
 246     wxBitmapComboBoxBase::BCBDoDeleteOneItem(n);
 247 }
 248
 249 // ----------------------------------------------------------------------------
 250 // wxBitmapComboBox event handlers and such
 251 // ----------------------------------------------------------------------------
 252
 253 void wxBitmapComboBox::OnSize(wxSizeEvent& event)
 254 {
 255     // Prevent infinite looping
 256     if ( !m_inResize )
 257     {
 258         m_inResize = true;
 259         DetermineIndent();
 260         m_inResize = false;
 261     }
 262
 263     event.Skip();
 264 }
 265
 266 wxSize wxBitmapComboBox::DoGetBestSize() const
 267 {
 268     wxSize sz = wxOwnerDrawnComboBox::DoGetBestSize();
 269
 270     if ( HasFlag(wxCB_READONLY) )
 271     {
 272         // Scale control to match height of highest image.
 273         int h2 = m_usedImgSize.y + IMAGE_SPACING_CTRL_VERTICAL;
 274
 275         if ( h2 > sz.y )
 276             sz.y = h2;
 277
 278         CacheBestSize(sz);
 279     }
 280
 281     return sz;
 282 }
 283
 284 // ----------------------------------------------------------------------------
 285 // wxBitmapComboBox miscellaneous
 286 // ----------------------------------------------------------------------------
 287
 288 bool wxBitmapComboBox::SetFont(const wxFont& font)
 289 {
 290     bool res = wxOwnerDrawnComboBox::SetFont(font);
 291     UpdateInternals();
 292     return res;
 293 }
 294
 295 // ----------------------------------------------------------------------------
 296 // wxBitmapComboBox item drawing and measuring
 297 // ----------------------------------------------------------------------------
 298
 299 void wxBitmapComboBox::OnDrawBackground(wxDC& dc,
 300                                         const wxRect& rect,
 301                                         int item,
 302                                         int flags) const
 303 {
 304     if ( GetCustomPaintWidth() == 0 ||
 305          !(flags & wxODCB_PAINTING_SELECTED) ||
 306          item < 0 ||
 307          ( (flags & wxODCB_PAINTING_CONTROL) && (GetInternalFlags() & wxCC_FULL_BUTTON)) )
 308     {
 309         wxOwnerDrawnComboBox::OnDrawBackground(dc, rect, item, flags);
 310         return;
 311     }
 312
 313     wxBitmapComboBoxBase::DrawBackground(dc, rect, item, flags);
 314 }
 315
 316 void wxBitmapComboBox::OnDrawItem(wxDC& dc,
 317                                  const wxRect& rect,
 318                                  int item,
 319                                  int flags) const
 320 {
 321     wxString text;
 322     int imgAreaWidth = m_imgAreaWidth;
 323
 324     if ( imgAreaWidth == 0 )
 325     {
 326         wxOwnerDrawnComboBox::OnDrawItem(dc, rect, item, flags);
 327         return;
 328     }
 329
 330     if ( flags & wxODCB_PAINTING_CONTROL )
 331     {
 332         text = GetValue();
 333         if ( !HasFlag(wxCB_READONLY) )
 334             text.clear();
 335     }
 336     else
 337     {
 338         text = GetString(item);
 339     }
 340
 341     wxBitmapComboBoxBase::DrawItem(dc, rect, item, text, flags);
 342 }
 343
 344 wxCoord wxBitmapComboBox::OnMeasureItem(size_t item) const
 345 {
 346     return wxBitmapComboBoxBase::MeasureItem(item);
 347 }
 348
 349 wxCoord wxBitmapComboBox::OnMeasureItemWidth(size_t item) const
 350 {
 351     wxCoord x, y;
 352     GetTextExtent(GetString(item), &x, &y, 0, 0);
 353     x += m_imgAreaWidth;
 354     return x;
 355 }
 356
 357 #endif // defined(wxGENERIC_BITMAPCOMBOBOX)
 358
 359 #endif // wxUSE_BITMAPCOMBOBOX