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