src/univ/checklst.cpp

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