| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: msw/checklst.cpp |
| 3 | // Purpose: implementation of wxCheckListBox class |
| 4 | // Author: Vadim Zeitlin |
| 5 | // Modified by: |
| 6 | // Created: 16.11.97 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr> |
| 9 | // Licence: wxWindows license |
| 10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ============================================================================ |
| 13 | // declarations |
| 14 | // ============================================================================ |
| 15 | |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | |
| 20 | #ifdef __GNUG__ |
| 21 | #pragma implementation "checklst.h" |
| 22 | #endif |
| 23 | |
| 24 | // For compilers that support precompilation, includes "wx.h". |
| 25 | #include "wx/wxprec.h" |
| 26 | |
| 27 | #ifdef __BORLANDC__ |
| 28 | #pragma hdrstop |
| 29 | #endif |
| 30 | |
| 31 | #if wxUSE_OWNER_DRAWN |
| 32 | |
| 33 | #include "wx/object.h" |
| 34 | #include "wx/colour.h" |
| 35 | #include "wx/font.h" |
| 36 | #include "wx/bitmap.h" |
| 37 | #include "wx/window.h" |
| 38 | #include "wx/listbox.h" |
| 39 | #include "wx/ownerdrw.h" |
| 40 | #include "wx/settings.h" |
| 41 | #include "wx/dcmemory.h" |
| 42 | #include "wx/msw/checklst.h" |
| 43 | #include "wx/log.h" |
| 44 | |
| 45 | #include <windows.h> |
| 46 | #include <windowsx.h> |
| 47 | |
| 48 | #ifdef __GNUWIN32__ |
| 49 | #include "wx/msw/gnuwin32/extra.h" |
| 50 | #endif |
| 51 | |
| 52 | // ---------------------------------------------------------------------------- |
| 53 | // private functions |
| 54 | // ---------------------------------------------------------------------------- |
| 55 | |
| 56 | // get item (converted to right type) |
| 57 | #define GetItem(n) ((wxCheckListBoxItem *)(GetItem(n))) |
| 58 | |
| 59 | // ============================================================================ |
| 60 | // implementation |
| 61 | // ============================================================================ |
| 62 | |
| 63 | #if !USE_SHARED_LIBRARY |
| 64 | IMPLEMENT_DYNAMIC_CLASS(wxCheckListBox, wxListBox) |
| 65 | #endif |
| 66 | |
| 67 | // ---------------------------------------------------------------------------- |
| 68 | // declaration and implementation of wxCheckListBoxItem class |
| 69 | // ---------------------------------------------------------------------------- |
| 70 | |
| 71 | class wxCheckListBoxItem : public wxOwnerDrawn |
| 72 | { |
| 73 | friend class wxCheckListBox; |
| 74 | public: |
| 75 | // ctor |
| 76 | wxCheckListBoxItem(wxCheckListBox *pParent, size_t nIndex); |
| 77 | |
| 78 | // drawing functions |
| 79 | virtual bool OnDrawItem(wxDC& dc, const wxRect& rc, wxODAction act, wxODStatus stat); |
| 80 | |
| 81 | // simple accessors |
| 82 | bool IsChecked() const { return m_bChecked; } |
| 83 | void Check(bool bCheck); |
| 84 | void Toggle() { Check(!IsChecked()); } |
| 85 | |
| 86 | private: |
| 87 | bool m_bChecked; |
| 88 | wxCheckListBox *m_pParent; |
| 89 | size_t m_nIndex; |
| 90 | }; |
| 91 | |
| 92 | wxCheckListBoxItem::wxCheckListBoxItem(wxCheckListBox *pParent, size_t nIndex) |
| 93 | : wxOwnerDrawn("", TRUE) // checkable |
| 94 | { |
| 95 | m_bChecked = FALSE; |
| 96 | m_pParent = pParent; |
| 97 | m_nIndex = nIndex; |
| 98 | |
| 99 | // we don't initialize m_nCheckHeight/Width vars because it's |
| 100 | // done in OnMeasure while they are used only in OnDraw and we |
| 101 | // know that there will always be OnMeasure before OnDraw |
| 102 | |
| 103 | // fix appearance |
| 104 | SetMarginWidth(GetDefaultMarginWidth()); |
| 105 | } |
| 106 | |
| 107 | /* |
| 108 | * JACS - I've got the owner-draw stuff partially working with WIN16, |
| 109 | * with a really horrible-looking cross for wxCheckListBox instead of a |
| 110 | * check - could use a bitmap check-mark instead, defined in wx.rc. |
| 111 | * Also there's a refresh problem whereby it doesn't always draw the |
| 112 | * check until you click to the right of it, which is OK for WIN32. |
| 113 | */ |
| 114 | |
| 115 | bool wxCheckListBoxItem::OnDrawItem(wxDC& dc, const wxRect& rc, |
| 116 | wxODAction act, wxODStatus stat) |
| 117 | { |
| 118 | if ( IsChecked() ) |
| 119 | stat = (wxOwnerDrawn::wxODStatus)(stat | wxOwnerDrawn::wxODChecked); |
| 120 | |
| 121 | if ( wxOwnerDrawn::OnDrawItem(dc, rc, act, stat) ) { |
| 122 | // ## using native API for performance and precision |
| 123 | size_t nCheckWidth = GetDefaultMarginWidth(), |
| 124 | nCheckHeight = m_pParent->GetItemHeight(); |
| 125 | |
| 126 | int x = rc.GetX(), |
| 127 | y = rc.GetY(); |
| 128 | |
| 129 | HDC hdc = (HDC)dc.GetHDC(); |
| 130 | |
| 131 | // create pens |
| 132 | HPEN hpenBack = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_WINDOW)), |
| 133 | hpenGray = CreatePen(PS_SOLID, 0, RGB(128, 128, 128)), |
| 134 | hpenPrev = (HPEN)SelectObject(hdc, hpenBack); |
| 135 | |
| 136 | // we erase the 1-pixel border |
| 137 | Rectangle(hdc, x, y, x + nCheckWidth, y + nCheckHeight); |
| 138 | |
| 139 | // shift check mark 1 pixel to the right (it looks better like this) |
| 140 | x++; |
| 141 | |
| 142 | if ( IsChecked() ) { |
| 143 | // first create a monochrome bitmap in a memory DC |
| 144 | HDC hdcMem = CreateCompatibleDC(hdc); |
| 145 | HBITMAP hbmpCheck = CreateBitmap(nCheckWidth, nCheckHeight, 1, 1, 0); |
| 146 | HBITMAP hbmpOld = (HBITMAP)SelectObject(hdcMem, hbmpCheck); |
| 147 | |
| 148 | // then draw a check mark into it |
| 149 | RECT rect = { 0, 0, nCheckWidth, nCheckHeight }; |
| 150 | |
| 151 | #ifdef __WIN32__ |
| 152 | #ifndef __SC__ |
| 153 | DrawFrameControl(hdcMem, &rect, DFC_MENU, DFCS_MENUCHECK); |
| 154 | #endif |
| 155 | #else |
| 156 | // In WIN16, draw a cross |
| 157 | HPEN blackPen = CreatePen(PS_SOLID, 1, RGB(0, 0, 0)); |
| 158 | HPEN whiteBrush = (HPEN)GetStockObject(WHITE_BRUSH); |
| 159 | HPEN hPenOld = (HPEN)::SelectObject(hdcMem, blackPen); |
| 160 | HPEN hBrushOld = (HPEN)::SelectObject(hdcMem, whiteBrush); |
| 161 | ::SetROP2(hdcMem, R2_COPYPEN); |
| 162 | Rectangle(hdcMem, 0, 0, nCheckWidth, nCheckHeight); |
| 163 | MoveTo(hdcMem, 0, 0); |
| 164 | LineTo(hdcMem, nCheckWidth, nCheckHeight); |
| 165 | MoveTo(hdcMem, nCheckWidth, 0); |
| 166 | LineTo(hdcMem, 0, nCheckHeight); |
| 167 | ::SelectObject(hdcMem, hPenOld); |
| 168 | ::SelectObject(hdcMem, hBrushOld); |
| 169 | ::DeleteObject(blackPen); |
| 170 | #endif |
| 171 | |
| 172 | // finally copy it to screen DC and clean up |
| 173 | BitBlt(hdc, x, y, nCheckWidth - 1, nCheckHeight, |
| 174 | hdcMem, 0, 0, SRCCOPY); |
| 175 | |
| 176 | SelectObject(hdcMem, hbmpOld); |
| 177 | DeleteObject(hbmpCheck); |
| 178 | DeleteDC(hdcMem); |
| 179 | } |
| 180 | |
| 181 | // now we draw the smaller rectangle |
| 182 | y++; |
| 183 | nCheckWidth -= 2; |
| 184 | nCheckHeight -= 2; |
| 185 | |
| 186 | // draw hollow gray rectangle |
| 187 | (void)SelectObject(hdc, hpenGray); |
| 188 | HBRUSH hbrPrev = (HBRUSH)SelectObject(hdc, GetStockObject(NULL_BRUSH)); |
| 189 | Rectangle(hdc, x, y, x + nCheckWidth, y + nCheckHeight); |
| 190 | |
| 191 | // clean up |
| 192 | (void)SelectObject(hdc, hpenPrev); |
| 193 | (void)SelectObject(hdc, hbrPrev); |
| 194 | |
| 195 | DeleteObject(hpenBack); |
| 196 | DeleteObject(hpenGray); |
| 197 | |
| 198 | /* |
| 199 | dc.DrawRectangle(x, y, nCheckWidth, nCheckHeight); |
| 200 | |
| 201 | if ( IsChecked() ) { |
| 202 | dc.DrawLine(x, y, x + nCheckWidth, y + nCheckHeight); |
| 203 | dc.DrawLine(x, y + nCheckHeight, x + nCheckWidth, y); |
| 204 | } |
| 205 | */ |
| 206 | |
| 207 | return TRUE; |
| 208 | } |
| 209 | |
| 210 | return FALSE; |
| 211 | } |
| 212 | |
| 213 | // change the state of the item and redraw it |
| 214 | void wxCheckListBoxItem::Check(bool check) |
| 215 | { |
| 216 | m_bChecked = check; |
| 217 | |
| 218 | // index may be chanegd because new items were added/deleted |
| 219 | if ( m_pParent->GetItemIndex(this) != (int)m_nIndex ) |
| 220 | { |
| 221 | // update it |
| 222 | int index = m_pParent->GetItemIndex(this); |
| 223 | |
| 224 | wxASSERT_MSG( index != wxNOT_FOUND, _T("what does this item do here?") ); |
| 225 | |
| 226 | m_nIndex = (size_t)index; |
| 227 | } |
| 228 | |
| 229 | HWND hwndListbox = (HWND)m_pParent->GetHWND(); |
| 230 | |
| 231 | #ifdef __WIN32__ |
| 232 | RECT rcUpdate; |
| 233 | |
| 234 | if ( ::SendMessage(hwndListbox, LB_GETITEMRECT, |
| 235 | m_nIndex, (LPARAM)&rcUpdate) == LB_ERR ) |
| 236 | { |
| 237 | wxLogDebug(_T("LB_GETITEMRECT failed")); |
| 238 | } |
| 239 | #else // Win16 |
| 240 | // FIXME this doesn't work if the listbox is scrolled! |
| 241 | size_t nHeight = m_pParent->GetItemHeight(); |
| 242 | size_t y = m_nIndex * nHeight; |
| 243 | RECT rcUpdate = { 0, y, GetDefaultMarginWidth(), y + nHeight}; |
| 244 | #endif // Win32/16 |
| 245 | |
| 246 | InvalidateRect(hwndListbox, &rcUpdate, FALSE); |
| 247 | |
| 248 | wxCommandEvent event(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, m_pParent->GetId()); |
| 249 | event.SetInt(m_nIndex); |
| 250 | event.SetEventObject(m_pParent); |
| 251 | m_pParent->ProcessCommand(event); |
| 252 | } |
| 253 | |
| 254 | // ---------------------------------------------------------------------------- |
| 255 | // implementation of wxCheckListBox class |
| 256 | // ---------------------------------------------------------------------------- |
| 257 | |
| 258 | // define event table |
| 259 | // ------------------ |
| 260 | BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox) |
| 261 | EVT_CHAR(wxCheckListBox::OnChar) |
| 262 | EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick) |
| 263 | END_EVENT_TABLE() |
| 264 | |
| 265 | // control creation |
| 266 | // ---------------- |
| 267 | |
| 268 | // def ctor: use Create() to really create the control |
| 269 | wxCheckListBox::wxCheckListBox() : wxListBox() |
| 270 | { |
| 271 | } |
| 272 | |
| 273 | // ctor which creates the associated control |
| 274 | wxCheckListBox::wxCheckListBox(wxWindow *parent, wxWindowID id, |
| 275 | const wxPoint& pos, const wxSize& size, |
| 276 | int nStrings, const wxString choices[], |
| 277 | long style, const wxValidator& val, |
| 278 | const wxString& name) |
| 279 | : wxListBox() |
| 280 | { |
| 281 | Create(parent, id, pos, size, nStrings, choices, |
| 282 | style | wxLB_OWNERDRAW, val, name); |
| 283 | } |
| 284 | |
| 285 | void wxCheckListBox::Delete(int N) |
| 286 | { |
| 287 | wxCHECK_RET( N >= 0 && N < m_noItems, |
| 288 | _T("invalid index in wxListBox::Delete") ); |
| 289 | |
| 290 | wxListBox::Delete(N); |
| 291 | |
| 292 | // free memory |
| 293 | delete m_aItems[N]; |
| 294 | |
| 295 | m_aItems.Remove(N); |
| 296 | } |
| 297 | |
| 298 | void wxCheckListBox::InsertItems(int nItems, const wxString items[], int pos) |
| 299 | { |
| 300 | wxCHECK_RET( pos >= 0 && pos <= m_noItems, |
| 301 | _T("invalid index in wxCheckListBox::InsertItems") ); |
| 302 | |
| 303 | wxListBox::InsertItems(nItems, items, pos); |
| 304 | |
| 305 | int i; |
| 306 | for ( i = 0; i < nItems; i++ ) { |
| 307 | wxOwnerDrawn *pNewItem = CreateItem((size_t)(pos + i)); |
| 308 | pNewItem->SetName(items[i]); |
| 309 | m_aItems.Insert(pNewItem, (size_t)(pos + i)); |
| 310 | ListBox_SetItemData((HWND)GetHWND(), i + pos, pNewItem); |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | |
| 315 | bool wxCheckListBox::SetFont( const wxFont &font ) |
| 316 | { |
| 317 | size_t i; |
| 318 | for (i=0; i < m_aItems.GetCount(); i++) |
| 319 | m_aItems[i]->SetFont(font); |
| 320 | wxListBox::SetFont(font); |
| 321 | return TRUE; |
| 322 | } |
| 323 | |
| 324 | // create/retrieve item |
| 325 | // -------------------- |
| 326 | |
| 327 | // create a check list box item |
| 328 | wxOwnerDrawn *wxCheckListBox::CreateItem(size_t nIndex) |
| 329 | { |
| 330 | wxCheckListBoxItem *pItem = new wxCheckListBoxItem(this, nIndex); |
| 331 | return pItem; |
| 332 | } |
| 333 | |
| 334 | // return item size |
| 335 | // ---------------- |
| 336 | bool wxCheckListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item) |
| 337 | { |
| 338 | if ( wxListBox::MSWOnMeasure(item) ) { |
| 339 | MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item; |
| 340 | |
| 341 | // save item height |
| 342 | m_nItemHeight = pStruct->itemHeight; |
| 343 | |
| 344 | // add place for the check mark |
| 345 | pStruct->itemWidth += wxOwnerDrawn::GetDefaultMarginWidth(); |
| 346 | |
| 347 | return TRUE; |
| 348 | } |
| 349 | |
| 350 | return FALSE; |
| 351 | } |
| 352 | |
| 353 | // check items |
| 354 | // ----------- |
| 355 | |
| 356 | bool wxCheckListBox::IsChecked(size_t uiIndex) const |
| 357 | { |
| 358 | return GetItem(uiIndex)->IsChecked(); |
| 359 | } |
| 360 | |
| 361 | void wxCheckListBox::Check(size_t uiIndex, bool bCheck) |
| 362 | { |
| 363 | GetItem(uiIndex)->Check(bCheck); |
| 364 | } |
| 365 | |
| 366 | // process events |
| 367 | // -------------- |
| 368 | |
| 369 | void wxCheckListBox::OnChar(wxKeyEvent& event) |
| 370 | { |
| 371 | if ( event.KeyCode() == WXK_SPACE ) |
| 372 | GetItem(GetSelection())->Toggle(); |
| 373 | else |
| 374 | event.Skip(); |
| 375 | } |
| 376 | |
| 377 | void wxCheckListBox::OnLeftClick(wxMouseEvent& event) |
| 378 | { |
| 379 | // clicking on the item selects it, clicking on the checkmark toggles |
| 380 | if ( event.GetX() <= wxOwnerDrawn::GetDefaultMarginWidth() ) { |
| 381 | #ifdef __WIN32__ |
| 382 | size_t nItem = (size_t)::SendMessage |
| 383 | ( |
| 384 | (HWND)GetHWND(), |
| 385 | LB_ITEMFROMPOINT, |
| 386 | 0, |
| 387 | MAKELPARAM(event.GetX(), event.GetY()) |
| 388 | ); |
| 389 | #else // Win16 |
| 390 | // FIXME this doesn't work when the listbox is scrolled! |
| 391 | size_t nItem = ((size_t)event.GetY()) / m_nItemHeight; |
| 392 | #endif // Win32/16 |
| 393 | |
| 394 | if ( nItem < (size_t)m_noItems ) |
| 395 | GetItem(nItem)->Toggle(); |
| 396 | //else: it's not an error, just click outside of client zone |
| 397 | } |
| 398 | else { |
| 399 | // implement default behaviour: clicking on the item selects it |
| 400 | event.Skip(); |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | #endif |
| 405 | |