src/univ/checklst.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        univ/checklst.cpp
   3 // Purpose:     wxCheckListBox implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     12.09.00
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "univchecklst.h"
  22 #endif
  23
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27     #pragma hdrstop
  28 #endif
  29
  30 #if wxUSE_CHECKLISTBOX
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/log.h"
  34
  35     #include "wx/dcclient.h"
  36     #include "wx/checklst.h"
  37     #include "wx/validate.h"
  38 #endif
  39
  40 #include "wx/univ/renderer.h"
  41 #include "wx/univ/inphand.h"
  42 #include "wx/univ/theme.h"
  43
  44 // ============================================================================
  45 // implementation of wxCheckListBox
  46 // ============================================================================
  47
  48 IMPLEMENT_DYNAMIC_CLASS(wxCheckListBox, wxListBox)
  49
  50 // ----------------------------------------------------------------------------
  51 // creation
  52 // ----------------------------------------------------------------------------
  53
  54 void wxCheckListBox::Init()
  55 {
  56 }
  57
  58 wxCheckListBox::wxCheckListBox(wxWindow *parent,
  59                                wxWindowID id,
  60                                const wxPoint &pos,
  61                                const wxSize &size,
  62                                const wxArrayString& choices,
  63                                long style,
  64                                const wxValidator& validator,
  65                                const wxString &name)
  66 {
  67     Init();
  68
  69     Create(parent, id, pos, size, choices, style, validator, name);
  70 }
  71
  72 bool wxCheckListBox::Create(wxWindow *parent,
  73                             wxWindowID id,
  74                             const wxPoint &pos,
  75                             const wxSize &size,
  76                             const wxArrayString& choices,
  77                             long style,
  78                             const wxValidator& validator,
  79                             const wxString &name)
  80 {
  81     wxCArrayString chs(choices);
  82
  83     return Create(parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
  84                   style, validator, name);
  85 }
  86
  87 bool wxCheckListBox::Create(wxWindow *parent,
  88                             wxWindowID id,
  89                             const wxPoint &pos,
  90                             const wxSize &size,
  91                             int n,
  92                             const wxString choices[],
  93                             long style,
  94                             const wxValidator& validator,
  95                             const wxString &name)
  96 {
  97     if ( !wxListBox::Create(parent, id, pos, size,
  98                             n, choices, style, validator, name) )
  99         return false;
 100
 101     CreateInputHandler(wxINP_HANDLER_CHECKLISTBOX);
 102
 103     return true;
 104 }
 105
 106 // ----------------------------------------------------------------------------
 107 // wxCheckListBox functions
 108 // ----------------------------------------------------------------------------
 109
 110 bool wxCheckListBox::IsChecked(size_t item) const
 111 {
 112     wxCHECK_MSG( item < m_checks.GetCount(), false,
 113                  _T("invalid index in wxCheckListBox::IsChecked") );
 114
 115     return m_checks[item] != 0;
 116 }
 117
 118 void wxCheckListBox::Check(size_t item, bool check)
 119 {
 120     wxCHECK_RET( item < m_checks.GetCount(),
 121                  _T("invalid index in wxCheckListBox::Check") );
 122
 123     // intermediate var is needed to avoid compiler warning with VC++
 124     bool isChecked = m_checks[item] != 0;
 125     if ( check != isChecked )
 126     {
 127         m_checks[item] = check;
 128
 129         RefreshItem(item);
 130     }
 131 }
 132
 133 // ----------------------------------------------------------------------------
 134 // methods forwarded to wxListBox
 135 // ----------------------------------------------------------------------------
 136
 137 void wxCheckListBox::Delete(int n)
 138 {
 139     wxCHECK_RET( n < GetCount(), _T("invalid index in wxListBox::Delete") );
 140
 141     wxListBox::Delete(n);
 142
 143     m_checks.RemoveAt(n);
 144 }
 145
 146 int wxCheckListBox::DoAppend(const wxString& item)
 147 {
 148     int pos = wxListBox::DoAppend(item);
 149
 150     // the item is initially unchecked
 151     m_checks.Insert(false, pos);
 152
 153     return pos;
 154 }
 155
 156 void wxCheckListBox::DoInsertItems(const wxArrayString& items, int pos)
 157 {
 158     wxListBox::DoInsertItems(items, pos);
 159
 160     size_t count = items.GetCount();
 161     for ( size_t n = 0; n < count; n++ )
 162     {
 163         m_checks.Insert(false, pos + n);
 164     }
 165 }
 166
 167 void wxCheckListBox::DoSetItems(const wxArrayString& items, void **clientData)
 168 {
 169     // call it first as it does DoClear()
 170     wxListBox::DoSetItems(items, clientData);
 171
 172     size_t count = items.GetCount();
 173     for ( size_t n = 0; n < count; n++ )
 174     {
 175         m_checks.Add(false);
 176     }
 177 }
 178
 179 void wxCheckListBox::DoClear()
 180 {
 181     m_checks.Empty();
 182 }
 183
 184 // ----------------------------------------------------------------------------
 185 // drawing
 186 // ----------------------------------------------------------------------------
 187
 188 wxSize wxCheckListBox::DoGetBestClientSize() const
 189 {
 190     wxSize size = wxListBox::DoGetBestClientSize();
 191     size.x += GetRenderer()->GetCheckBitmapSize().x;
 192
 193     return size;
 194 }
 195
 196 void wxCheckListBox::DoDrawRange(wxControlRenderer *renderer,
 197                                  int itemFirst, int itemLast)
 198 {
 199     renderer->DrawCheckItems(this, itemFirst, itemLast);
 200 }
 201
 202 // ----------------------------------------------------------------------------
 203 // actions
 204 // ----------------------------------------------------------------------------
 205
 206 bool wxCheckListBox::PerformAction(const wxControlAction& action,
 207                                    long numArg,
 208                                    const wxString& strArg)
 209 {
 210     if ( action == wxACTION_CHECKLISTBOX_TOGGLE )
 211     {
 212         int sel = (int)numArg;
 213         if ( sel == -1 )
 214         {
 215             sel = GetSelection();
 216         }
 217
 218         if ( sel != -1 )
 219         {
 220             Check(sel, !IsChecked(sel));
 221
 222             SendEvent(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, sel);
 223         }
 224     }
 225     else
 226     {
 227         return wxListBox::PerformAction(action, numArg, strArg);
 228     }
 229
 230     return true;
 231 }
 232
 233 // ----------------------------------------------------------------------------
 234 // wxStdCheckListboxInputHandler
 235 // ----------------------------------------------------------------------------
 236
 237 wxStdCheckListboxInputHandler::
 238 wxStdCheckListboxInputHandler(wxInputHandler *inphand)
 239     : wxStdListboxInputHandler(inphand)
 240 {
 241 }
 242
 243 bool wxStdCheckListboxInputHandler::HandleKey(wxInputConsumer *consumer,
 244                                               const wxKeyEvent& event,
 245                                               bool pressed)
 246 {
 247     if ( pressed && (event.GetKeyCode() == WXK_SPACE) )
 248         consumer->PerformAction(wxACTION_CHECKLISTBOX_TOGGLE);
 249
 250     return wxStdListboxInputHandler::HandleKey(consumer, event, pressed);
 251 }
 252
 253 bool wxStdCheckListboxInputHandler::HandleMouse(wxInputConsumer *consumer,
 254                                                 const wxMouseEvent& event)
 255 {
 256     if ( event.LeftDown() || event.LeftDClick() )
 257     {
 258         wxCheckListBox *lbox = wxStaticCast(consumer->GetInputWindow(), wxCheckListBox);
 259         int x, y;
 260
 261         wxPoint pt = event.GetPosition();
 262         pt -= consumer->GetInputWindow()->GetClientAreaOrigin();
 263         lbox->CalcUnscrolledPosition(pt.x, pt.y, &x, &y);
 264
 265         wxRenderer *renderer = lbox->GetRenderer();
 266         x -= renderer->GetCheckItemMargin();
 267
 268         int item = y / lbox->GetLineHeight();
 269         if ( x >= 0 &&
 270              x < renderer->GetCheckBitmapSize().x &&
 271              item >= 0 &&
 272              item < lbox->GetCount() )
 273         {
 274             lbox->PerformAction(wxACTION_CHECKLISTBOX_TOGGLE, item);
 275
 276             return true;
 277         }
 278     }
 279
 280     return wxStdListboxInputHandler::HandleMouse(consumer, event);
 281 }
 282
 283 #endif // wxUSE_CHECKLISTBOX