src/msw/bmpcbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/bmpcboxg.cpp
   3 // Purpose:     wxBitmapComboBox
   4 // Author:      Jaakko Salli
   5 // Created:     2008-04-06
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2008 Jaakko Salli
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 #include "wx/wxprec.h"
  20
  21 #ifdef __BORLANDC__
  22     #pragma hdrstop
  23 #endif
  24
  25 #if wxUSE_BITMAPCOMBOBOX
  26
  27 #include "wx/bmpcbox.h"
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/log.h"
  31 #endif
  32
  33 #include "wx/settings.h"
  34
  35 #include "wx/msw/dcclient.h"
  36 #include "wx/msw/private.h"
  37
  38 // For wxODCB_XXX flags
  39 #include "wx/odcombo.h"
  40
  41
  42 #define IMAGE_SPACING_CTRL_VERTICAL 7  // Spacing used in control size calculation
  43
  44
  45 // ============================================================================
  46 // implementation
  47 // ============================================================================
  48
  49
  50 BEGIN_EVENT_TABLE(wxBitmapComboBox, wxComboBox)
  51     EVT_SIZE(wxBitmapComboBox::OnSize)
  52 END_EVENT_TABLE()
  53
  54
  55 IMPLEMENT_DYNAMIC_CLASS(wxBitmapComboBox, wxComboBox)
  56
  57
  58 // ----------------------------------------------------------------------------
  59 // wxBitmapComboBox creation
  60 // ----------------------------------------------------------------------------
  61
  62 void wxBitmapComboBox::Init()
  63 {
  64     m_inResize = false;
  65 }
  66
  67 wxBitmapComboBox::wxBitmapComboBox(wxWindow *parent,
  68                                   wxWindowID id,
  69                                   const wxString& value,
  70                                   const wxPoint& pos,
  71                                   const wxSize& size,
  72                                   const wxArrayString& choices,
  73                                   long style,
  74                                   const wxValidator& validator,
  75                                   const wxString& name)
  76     : wxComboBox(),
  77       wxBitmapComboBoxBase()
  78 {
  79     Init();
  80
  81     Create(parent,id,value,pos,size,choices,style,validator,name);
  82 }
  83
  84 bool wxBitmapComboBox::Create(wxWindow *parent,
  85                               wxWindowID id,
  86                               const wxString& value,
  87                               const wxPoint& pos,
  88                               const wxSize& size,
  89                               const wxArrayString& choices,
  90                               long style,
  91                               const wxValidator& validator,
  92                               const wxString& name)
  93 {
  94     wxCArrayString chs(choices);
  95     return Create(parent, id, value, pos, size, chs.GetCount(),
  96                   chs.GetStrings(), style, validator, name);
  97 }
  98
  99 bool wxBitmapComboBox::Create(wxWindow *parent,
 100                               wxWindowID id,
 101                               const wxString& value,
 102                               const wxPoint& pos,
 103                               const wxSize& size,
 104                               int n,
 105                               const wxString choices[],
 106                               long style,
 107                               const wxValidator& validator,
 108                               const wxString& name)
 109 {
 110     if ( !wxComboBox::Create(parent, id, value, pos, size,
 111                              n, choices, style, validator, name) )
 112         return false;
 113
 114     UpdateInternals();
 115
 116     return true;
 117 }
 118
 119 WXDWORD wxBitmapComboBox::MSWGetStyle(long style, WXDWORD *exstyle) const
 120 {
 121     return wxComboBox::MSWGetStyle(style, exstyle) | CBS_OWNERDRAWFIXED | CBS_HASSTRINGS;
 122 }
 123
 124 void wxBitmapComboBox::RecreateControl()
 125 {
 126     //
 127     // Recreate control so that WM_MEASUREITEM gets called again.
 128     // Can't use CBS_OWNERDRAWVARIABLE because it has odd
 129     // mouse-wheel behaviour.
 130     //
 131     wxString value = GetValue();
 132     wxPoint pos = GetPosition();
 133     wxSize size = GetSize();
 134     wxArrayString strings = GetStrings();
 135
 136     wxComboBox::DoClear();
 137
 138     HWND hwnd = GetHwnd();
 139     DissociateHandle();
 140     ::DestroyWindow(hwnd);
 141
 142     if ( !MSWCreateControl(wxT("COMBOBOX"), value, pos, size) )
 143         return;
 144
 145     // initialize the controls contents
 146     for ( unsigned int i = 0; i < strings.size(); i++ )
 147     {
 148         wxComboBox::Append(strings[i]);
 149     }
 150
 151     // and make sure it has the same attributes as before
 152     if ( m_hasFont )
 153     {
 154         // calling SetFont(m_font) would do nothing as the code would
 155         // notice that the font didn't change, so force it to believe
 156         // that it did
 157         wxFont font = m_font;
 158         m_font = wxNullFont;
 159         SetFont(font);
 160     }
 161
 162     if ( m_hasFgCol )
 163     {
 164         wxColour colFg = m_foregroundColour;
 165         m_foregroundColour = wxNullColour;
 166         SetForegroundColour(colFg);
 167     }
 168
 169     if ( m_hasBgCol )
 170     {
 171         wxColour colBg = m_backgroundColour;
 172         m_backgroundColour = wxNullColour;
 173         SetBackgroundColour(colBg);
 174     }
 175     else
 176     {
 177         SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 178     }
 179 }
 180
 181 wxBitmapComboBox::~wxBitmapComboBox()
 182 {
 183     Clear();
 184 }
 185
 186 wxSize wxBitmapComboBox::DoGetBestSize() const
 187 {
 188     wxSize best = wxComboBox::DoGetBestSize();
 189     wxSize bitmapSize = GetBitmapSize();
 190
 191     wxCoord useHeightBitmap = EDIT_HEIGHT_FROM_CHAR_HEIGHT(bitmapSize.y);
 192     if ( best.y < useHeightBitmap )
 193     {
 194         best.y = useHeightBitmap;
 195         CacheBestSize(best);
 196     }
 197     return best;
 198 }
 199
 200 // ----------------------------------------------------------------------------
 201 // Item manipulation
 202 // ----------------------------------------------------------------------------
 203
 204 void wxBitmapComboBox::SetItemBitmap(unsigned int n, const wxBitmap& bitmap)
 205 {
 206     OnAddBitmap(bitmap);
 207     DoSetItemBitmap(n, bitmap);
 208
 209     if ( (int)n == GetSelection() )
 210         Refresh();
 211 }
 212
 213 int wxBitmapComboBox::Append(const wxString& item, const wxBitmap& bitmap)
 214 {
 215     OnAddBitmap(bitmap);
 216     const int n = wxComboBox::Append(item);
 217     if ( n != wxNOT_FOUND )
 218         DoSetItemBitmap(n, bitmap);
 219     return n;
 220 }
 221
 222 int wxBitmapComboBox::Append(const wxString& item, const wxBitmap& bitmap,
 223                              void *clientData)
 224 {
 225     OnAddBitmap(bitmap);
 226     const int n = wxComboBox::Append(item, clientData);
 227     if ( n != wxNOT_FOUND )
 228         DoSetItemBitmap(n, bitmap);
 229     return n;
 230 }
 231
 232 int wxBitmapComboBox::Append(const wxString& item, const wxBitmap& bitmap,
 233                              wxClientData *clientData)
 234 {
 235     OnAddBitmap(bitmap);
 236     const int n = wxComboBox::Append(item, clientData);
 237     if ( n != wxNOT_FOUND )
 238         DoSetItemBitmap(n, bitmap);
 239     return n;
 240 }
 241
 242 int wxBitmapComboBox::Insert(const wxString& item,
 243                              const wxBitmap& bitmap,
 244                              unsigned int pos)
 245 {
 246     OnAddBitmap(bitmap);
 247     const int n = wxComboBox::Insert(item, pos);
 248     if ( n != wxNOT_FOUND )
 249         DoSetItemBitmap(n, bitmap);
 250     return n;
 251 }
 252
 253 int wxBitmapComboBox::Insert(const wxString& item, const wxBitmap& bitmap,
 254                              unsigned int pos, wxClientData *clientData)
 255 {
 256     OnAddBitmap(bitmap);
 257     const int n = wxComboBox::Insert(item, pos, clientData);
 258     if ( n != wxNOT_FOUND )
 259         DoSetItemBitmap(n, bitmap);
 260     return n;
 261 }
 262
 263 int wxBitmapComboBox::DoInsertItems(const wxArrayStringsAdapter & items,
 264                                     unsigned int pos,
 265                                     void **clientData, wxClientDataType type)
 266 {
 267     const unsigned int numItems = items.GetCount();
 268     const unsigned int countNew = GetCount() + numItems;
 269
 270     wxASSERT( numItems == 1 || !HasFlag(wxCB_SORT) );  // Sanity check
 271
 272     m_bitmaps.Alloc(countNew);
 273
 274     for ( unsigned int i = 0; i < numItems; i++ )
 275     {
 276         m_bitmaps.Insert(new wxBitmap(wxNullBitmap), pos + i);
 277     }
 278
 279     const int index = wxComboBox::DoInsertItems(items, pos,
 280                                                 clientData, type);
 281
 282     if ( index == wxNOT_FOUND )
 283     {
 284         for ( int i = numItems-1; i >= 0; i-- )
 285             BCBDoDeleteOneItem(pos + i);
 286     }
 287     else if ( ((unsigned int)index) != pos )
 288     {
 289         // Move pre-inserted empty bitmap into correct position
 290         // (usually happens when combo box has wxCB_SORT style)
 291         wxBitmap* bmp = static_cast<wxBitmap*>(m_bitmaps[pos]);
 292         m_bitmaps.RemoveAt(pos);
 293         m_bitmaps.Insert(bmp, index);
 294     }
 295
 296     return index;
 297 }
 298
 299 bool wxBitmapComboBox::OnAddBitmap(const wxBitmap& bitmap)
 300 {
 301     if ( wxBitmapComboBoxBase::OnAddBitmap(bitmap) )
 302     {
 303         // Need to recreate control for a new measureitem call?
 304         int prevItemHeight = ::SendMessage(GetHwnd(), CB_GETITEMHEIGHT, 0, 0);
 305
 306         if ( prevItemHeight != MeasureItem(0) )
 307             RecreateControl();
 308
 309         return true;
 310     }
 311
 312     return false;
 313 }
 314
 315 void wxBitmapComboBox::DoClear()
 316 {
 317     wxComboBox::DoClear();
 318     wxBitmapComboBoxBase::BCBDoClear();
 319 }
 320
 321 void wxBitmapComboBox::DoDeleteOneItem(unsigned int n)
 322 {
 323     wxComboBox::DoDeleteOneItem(n);
 324     wxBitmapComboBoxBase::BCBDoDeleteOneItem(n);
 325 }
 326
 327 // ----------------------------------------------------------------------------
 328 // wxBitmapComboBox event handlers and such
 329 // ----------------------------------------------------------------------------
 330
 331 void wxBitmapComboBox::OnSize(wxSizeEvent& event)
 332 {
 333     // Prevent infinite looping
 334     if ( !m_inResize )
 335     {
 336         m_inResize = true;
 337         DetermineIndent();
 338         m_inResize = false;
 339     }
 340
 341     event.Skip();
 342 }
 343
 344 // ----------------------------------------------------------------------------
 345 // wxBitmapComboBox miscellaneous
 346 // ----------------------------------------------------------------------------
 347
 348 bool wxBitmapComboBox::SetFont(const wxFont& font)
 349 {
 350     bool res = wxComboBox::SetFont(font);
 351     UpdateInternals();
 352     return res;
 353 }
 354
 355 // ----------------------------------------------------------------------------
 356 // wxBitmapComboBox item drawing and measuring
 357 // ----------------------------------------------------------------------------
 358
 359 bool wxBitmapComboBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 360 {
 361     LPDRAWITEMSTRUCT lpDrawItem = (LPDRAWITEMSTRUCT) item;
 362     int pos = lpDrawItem->itemID;
 363
 364     // Draw default for item -1, which means 'focus rect only'
 365     if ( pos == -1 )
 366         return FALSE;
 367
 368     int flags = 0;
 369     if ( lpDrawItem->itemState & ODS_COMBOBOXEDIT )
 370         flags |= wxODCB_PAINTING_CONTROL;
 371     if ( lpDrawItem->itemState & ODS_SELECTED )
 372         flags |= wxODCB_PAINTING_SELECTED;
 373
 374     wxString text;
 375
 376     if ( flags & wxODCB_PAINTING_CONTROL )
 377     {
 378         text = GetValue();
 379         if ( !HasFlag(wxCB_READONLY) )
 380             text.clear();
 381     }
 382     else
 383     {
 384         text = GetString(pos);
 385     }
 386
 387     wxPaintDCEx dc(this, lpDrawItem->hDC);
 388     wxRect rect = wxRectFromRECT(lpDrawItem->rcItem);
 389     wxBitmapComboBoxBase::DrawBackground(dc, rect, pos, flags);
 390     wxBitmapComboBoxBase::DrawItem(dc, rect, pos, text, flags);
 391
 392     // If the item has the focus, draw focus rectangle.
 393     // Commented out since regular combo box doesn't
 394     // seem to do it either.
 395     //if ( lpDrawItem->itemState & ODS_FOCUS )
 396     //    DrawFocusRect(lpDrawItem->hDC, &lpDrawItem->rcItem);
 397
 398     return TRUE;
 399 }
 400
 401 bool wxBitmapComboBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
 402 {
 403     LPMEASUREITEMSTRUCT lpMeasureItem = (LPMEASUREITEMSTRUCT) item;
 404     int pos = lpMeasureItem->itemID;
 405
 406     lpMeasureItem->itemHeight = wxBitmapComboBoxBase::MeasureItem(pos);
 407
 408     return TRUE;
 409 }
 410
 411 #endif // wxUSE_BITMAPCOMBOBOX