| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: univ/listbox.cpp |
| 3 | // Purpose: wxListBox implementation |
| 4 | // Author: Vadim Zeitlin |
| 5 | // Modified by: |
| 6 | // Created: 30.08.00 |
| 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 | #ifdef __GNUG__ |
| 21 | #pragma implementation "univlistbox.h" |
| 22 | #endif |
| 23 | |
| 24 | #include "wx/wxprec.h" |
| 25 | |
| 26 | #ifdef __BORLANDC__ |
| 27 | #pragma hdrstop |
| 28 | #endif |
| 29 | |
| 30 | #if wxUSE_LISTBOX |
| 31 | |
| 32 | #ifndef WX_PRECOMP |
| 33 | #include "wx/log.h" |
| 34 | |
| 35 | #include "wx/dcclient.h" |
| 36 | #include "wx/listbox.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 wxListBox |
| 46 | // ============================================================================ |
| 47 | |
| 48 | IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl) |
| 49 | |
| 50 | BEGIN_EVENT_TABLE(wxListBox, wxListBoxBase) |
| 51 | EVT_SIZE(wxListBox::OnSize) |
| 52 | |
| 53 | EVT_IDLE(wxListBox::OnIdle) |
| 54 | END_EVENT_TABLE() |
| 55 | |
| 56 | // ---------------------------------------------------------------------------- |
| 57 | // construction |
| 58 | // ---------------------------------------------------------------------------- |
| 59 | |
| 60 | void wxListBox::Init() |
| 61 | { |
| 62 | // will be calculated later when needed |
| 63 | m_lineHeight = 0; |
| 64 | m_itemsPerPage = 0; |
| 65 | m_maxWidth = 0; |
| 66 | m_scrollRangeY = 0; |
| 67 | m_maxWidthItem = -1; |
| 68 | |
| 69 | // no items hence no current item |
| 70 | m_current = -1; |
| 71 | m_selAnchor = -1; |
| 72 | m_currentChanged = FALSE; |
| 73 | |
| 74 | // no need to update anything initially |
| 75 | m_updateCount = 0; |
| 76 | |
| 77 | // no scrollbars to show nor update |
| 78 | m_updateScrollbarX = |
| 79 | m_showScrollbarX = |
| 80 | m_updateScrollbarY = |
| 81 | m_showScrollbarY = FALSE; |
| 82 | } |
| 83 | |
| 84 | bool wxListBox::Create(wxWindow *parent, |
| 85 | wxWindowID id, |
| 86 | const wxPoint &pos, |
| 87 | const wxSize &size, |
| 88 | int n, |
| 89 | const wxString choices[], |
| 90 | long style, |
| 91 | const wxValidator& validator, |
| 92 | const wxString &name) |
| 93 | { |
| 94 | // for compatibility accept both the new and old styles - they mean the |
| 95 | // same thing for us |
| 96 | if ( style & wxLB_ALWAYS_SB ) |
| 97 | style |= wxALWAYS_SHOW_SB; |
| 98 | |
| 99 | // if we don't have neither multiple nor extended flag, we must have the |
| 100 | // single selection listbox |
| 101 | if ( !(style & (wxLB_MULTIPLE | wxLB_EXTENDED)) ) |
| 102 | style |= wxLB_SINGLE; |
| 103 | |
| 104 | if ( !wxControl::Create(parent, id, pos, size, style, wxDefaultValidator, name) ) |
| 105 | return FALSE; |
| 106 | |
| 107 | SetWindow(this); |
| 108 | |
| 109 | if ( style & wxLB_SORT ) |
| 110 | m_strings = wxArrayString(TRUE /* auto sort */); |
| 111 | |
| 112 | Set(n, choices); |
| 113 | |
| 114 | SetBestSize(size); |
| 115 | |
| 116 | CreateInputHandler(wxINP_HANDLER_LISTBOX); |
| 117 | |
| 118 | return TRUE; |
| 119 | } |
| 120 | |
| 121 | wxListBox::~wxListBox() |
| 122 | { |
| 123 | } |
| 124 | |
| 125 | // ---------------------------------------------------------------------------- |
| 126 | // adding/inserting strings |
| 127 | // ---------------------------------------------------------------------------- |
| 128 | |
| 129 | int wxListBox::DoAppend(const wxString& item) |
| 130 | { |
| 131 | size_t index = m_strings.Add(item); |
| 132 | m_itemsClientData.Insert(NULL, index); |
| 133 | |
| 134 | m_updateScrollbarY = TRUE; |
| 135 | |
| 136 | if ( HasHorzScrollbar() ) |
| 137 | { |
| 138 | // has the max width increased? |
| 139 | wxCoord width; |
| 140 | GetTextExtent(item, &width, NULL); |
| 141 | if ( width > m_maxWidth ) |
| 142 | { |
| 143 | m_maxWidth = width; |
| 144 | m_maxWidthItem = index; |
| 145 | m_updateScrollbarX = TRUE; |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | RefreshFromItemToEnd(index); |
| 150 | |
| 151 | return index; |
| 152 | } |
| 153 | |
| 154 | void wxListBox::DoInsertItems(const wxArrayString& items, int pos) |
| 155 | { |
| 156 | // the position of the item being added to a sorted listbox can't be |
| 157 | // specified |
| 158 | wxCHECK_RET( !IsSorted(), _T("can't insert items into sorted listbox") ); |
| 159 | |
| 160 | size_t count = items.GetCount(); |
| 161 | for ( size_t n = 0; n < count; n++ ) |
| 162 | { |
| 163 | m_strings.Insert(items[n], pos + n); |
| 164 | m_itemsClientData.Insert(NULL, pos + n); |
| 165 | } |
| 166 | |
| 167 | // the number of items has changed so we might have to show the scrollbar |
| 168 | m_updateScrollbarY = TRUE; |
| 169 | |
| 170 | // the max width also might have changed - just recalculate it instead of |
| 171 | // keeping track of it here, this is probably more efficient for a typical |
| 172 | // use pattern |
| 173 | RefreshHorzScrollbar(); |
| 174 | |
| 175 | // note that we have to refresh all the items after the ones we inserted, |
| 176 | // not just these items |
| 177 | RefreshFromItemToEnd(pos); |
| 178 | } |
| 179 | |
| 180 | void wxListBox::DoSetItems(const wxArrayString& items, void **clientData) |
| 181 | { |
| 182 | DoClear(); |
| 183 | |
| 184 | size_t count = items.GetCount(); |
| 185 | if ( !count ) |
| 186 | return; |
| 187 | |
| 188 | m_strings.Alloc(count); |
| 189 | m_itemsClientData.Alloc(count); |
| 190 | for ( size_t n = 0; n < count; n++ ) |
| 191 | { |
| 192 | size_t index = m_strings.Add(items[n]); |
| 193 | m_itemsClientData.Insert(clientData ? clientData[n] : NULL, index); |
| 194 | } |
| 195 | |
| 196 | m_updateScrollbarY = TRUE; |
| 197 | |
| 198 | RefreshAll(); |
| 199 | } |
| 200 | |
| 201 | void wxListBox::SetString(int n, const wxString& s) |
| 202 | { |
| 203 | if ( HasHorzScrollbar() ) |
| 204 | { |
| 205 | // we need to update m_maxWidth as changing the string may cause the |
| 206 | // horz scrollbar [dis]appear |
| 207 | wxCoord width; |
| 208 | m_strings[n] = s; |
| 209 | GetTextExtent(s, &width, NULL); |
| 210 | |
| 211 | // it might have increased if the new string is long |
| 212 | if ( width > m_maxWidth ) |
| 213 | { |
| 214 | m_maxWidth = width; |
| 215 | m_maxWidthItem = n; |
| 216 | m_updateScrollbarX = TRUE; |
| 217 | } |
| 218 | // or also decreased if the old string was the longest one |
| 219 | else if ( n == m_maxWidthItem ) |
| 220 | { |
| 221 | RefreshHorzScrollbar(); |
| 222 | } |
| 223 | } |
| 224 | else // no horz scrollbar |
| 225 | { |
| 226 | m_strings[n] = s; |
| 227 | } |
| 228 | |
| 229 | RefreshItem(n); |
| 230 | } |
| 231 | |
| 232 | // ---------------------------------------------------------------------------- |
| 233 | // removing strings |
| 234 | // ---------------------------------------------------------------------------- |
| 235 | |
| 236 | void wxListBox::DoClear() |
| 237 | { |
| 238 | m_strings.Clear(); |
| 239 | |
| 240 | if ( HasClientObjectData() ) |
| 241 | { |
| 242 | size_t count = m_itemsClientData.GetCount(); |
| 243 | for ( size_t n = 0; n < count; n++ ) |
| 244 | { |
| 245 | delete (wxClientData *) m_itemsClientData[n]; |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | m_itemsClientData.Clear(); |
| 250 | m_selections.Clear(); |
| 251 | |
| 252 | m_current = -1; |
| 253 | } |
| 254 | |
| 255 | void wxListBox::Clear() |
| 256 | { |
| 257 | DoClear(); |
| 258 | |
| 259 | m_updateScrollbarY = TRUE; |
| 260 | |
| 261 | RefreshHorzScrollbar(); |
| 262 | |
| 263 | RefreshAll(); |
| 264 | } |
| 265 | |
| 266 | void wxListBox::Delete(int n) |
| 267 | { |
| 268 | wxCHECK_RET( n < GetCount(), _T("invalid index in wxListBox::Delete") ); |
| 269 | |
| 270 | // do it before removing the index as otherwise the last item will not be |
| 271 | // refreshed (as GetCount() will be decremented) |
| 272 | RefreshFromItemToEnd(n); |
| 273 | |
| 274 | m_strings.RemoveAt(n); |
| 275 | |
| 276 | if ( HasClientObjectData() ) |
| 277 | { |
| 278 | delete (wxClientData *)m_itemsClientData[n]; |
| 279 | } |
| 280 | |
| 281 | m_itemsClientData.RemoveAt(n); |
| 282 | |
| 283 | // when the item disappears we must not keep using its index |
| 284 | if ( n == m_current ) |
| 285 | { |
| 286 | m_current = -1; |
| 287 | } |
| 288 | else if ( n < m_current ) |
| 289 | { |
| 290 | m_current--; |
| 291 | } |
| 292 | //else: current item may stay |
| 293 | |
| 294 | // update the selections array: the indices of all seletected items after |
| 295 | // the one being deleted must change and the item itselfm ust be removed |
| 296 | int index = wxNOT_FOUND; |
| 297 | size_t count = m_selections.GetCount(); |
| 298 | for ( size_t item = 0; item < count; item++ ) |
| 299 | { |
| 300 | if ( m_selections[item] == n ) |
| 301 | { |
| 302 | // remember to delete it later |
| 303 | index = item; |
| 304 | } |
| 305 | else if ( m_selections[item] > n ) |
| 306 | { |
| 307 | // to account for the index shift |
| 308 | m_selections[item]--; |
| 309 | } |
| 310 | //else: nothing changed for this one |
| 311 | } |
| 312 | |
| 313 | if ( index != wxNOT_FOUND ) |
| 314 | { |
| 315 | m_selections.RemoveAt(index); |
| 316 | } |
| 317 | |
| 318 | // the number of items has changed, hence the scrollbar may disappear |
| 319 | m_updateScrollbarY = TRUE; |
| 320 | |
| 321 | // finally, if the longest item was deleted the scrollbar may disappear |
| 322 | if ( n == m_maxWidthItem ) |
| 323 | { |
| 324 | RefreshHorzScrollbar(); |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | // ---------------------------------------------------------------------------- |
| 329 | // client data handling |
| 330 | // ---------------------------------------------------------------------------- |
| 331 | |
| 332 | void wxListBox::DoSetItemClientData(int n, void* clientData) |
| 333 | { |
| 334 | m_itemsClientData[n] = clientData; |
| 335 | } |
| 336 | |
| 337 | void *wxListBox::DoGetItemClientData(int n) const |
| 338 | { |
| 339 | return m_itemsClientData[n]; |
| 340 | } |
| 341 | |
| 342 | void wxListBox::DoSetItemClientObject(int n, wxClientData* clientData) |
| 343 | { |
| 344 | m_itemsClientData[n] = clientData; |
| 345 | } |
| 346 | |
| 347 | wxClientData* wxListBox::DoGetItemClientObject(int n) const |
| 348 | { |
| 349 | return (wxClientData *)m_itemsClientData[n]; |
| 350 | } |
| 351 | |
| 352 | // ---------------------------------------------------------------------------- |
| 353 | // selection |
| 354 | // ---------------------------------------------------------------------------- |
| 355 | |
| 356 | void wxListBox::SetSelection(int n, bool select) |
| 357 | { |
| 358 | if ( select ) |
| 359 | { |
| 360 | if ( m_selections.Index(n) == wxNOT_FOUND ) |
| 361 | { |
| 362 | if ( !HasMultipleSelection() ) |
| 363 | { |
| 364 | // selecting an item in a single selection listbox deselects |
| 365 | // all the others |
| 366 | DeselectAll(); |
| 367 | } |
| 368 | |
| 369 | m_selections.Add(n); |
| 370 | |
| 371 | RefreshItem(n); |
| 372 | } |
| 373 | //else: already selected |
| 374 | } |
| 375 | else // unselect |
| 376 | { |
| 377 | int index = m_selections.Index(n); |
| 378 | if ( index != wxNOT_FOUND ) |
| 379 | { |
| 380 | m_selections.RemoveAt(index); |
| 381 | |
| 382 | RefreshItem(n); |
| 383 | } |
| 384 | //else: not selected |
| 385 | } |
| 386 | |
| 387 | // sanity check: a single selection listbox can't have more than one item |
| 388 | // selected |
| 389 | wxASSERT_MSG( HasMultipleSelection() || (m_selections.GetCount() < 2), |
| 390 | _T("multiple selected items in single selection lbox?") ); |
| 391 | |
| 392 | if ( select ) |
| 393 | { |
| 394 | // the newly selected item becomes the current one |
| 395 | SetCurrentItem(n); |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | int wxListBox::GetSelection() const |
| 400 | { |
| 401 | wxCHECK_MSG( !HasMultipleSelection(), -1, |
| 402 | _T("use wxListBox::GetSelections for ths listbox") ); |
| 403 | |
| 404 | return m_selections.IsEmpty() ? -1 : m_selections[0]; |
| 405 | } |
| 406 | |
| 407 | int wxCMPFUNC_CONV wxCompareInts(int *n, int *m) |
| 408 | { |
| 409 | return *n - *m; |
| 410 | } |
| 411 | |
| 412 | int wxListBox::GetSelections(wxArrayInt& selections) const |
| 413 | { |
| 414 | // always return sorted array to the user |
| 415 | selections = m_selections; |
| 416 | size_t count = m_selections.GetCount(); |
| 417 | |
| 418 | // don't call sort on an empty array |
| 419 | if ( count ) |
| 420 | { |
| 421 | selections.Sort(wxCompareInts); |
| 422 | } |
| 423 | |
| 424 | return count; |
| 425 | } |
| 426 | |
| 427 | // ---------------------------------------------------------------------------- |
| 428 | // refresh logic: we use delayed refreshing which allows to avoid multiple |
| 429 | // refreshes (and hence flicker) in case when several listbox items are |
| 430 | // added/deleted/changed subsequently |
| 431 | // ---------------------------------------------------------------------------- |
| 432 | |
| 433 | void wxListBox::RefreshFromItemToEnd(int from) |
| 434 | { |
| 435 | RefreshItems(from, GetCount() - from); |
| 436 | } |
| 437 | |
| 438 | void wxListBox::RefreshItems(int from, int count) |
| 439 | { |
| 440 | switch ( m_updateCount ) |
| 441 | { |
| 442 | case 0: |
| 443 | m_updateFrom = from; |
| 444 | m_updateCount = count; |
| 445 | break; |
| 446 | |
| 447 | case -1: |
| 448 | // we refresh everything anyhow |
| 449 | break; |
| 450 | |
| 451 | default: |
| 452 | // add these items to the others which we have to refresh |
| 453 | if ( m_updateFrom < from ) |
| 454 | { |
| 455 | count += from - m_updateFrom; |
| 456 | if ( m_updateCount < count ) |
| 457 | m_updateCount = count; |
| 458 | } |
| 459 | else // m_updateFrom >= from |
| 460 | { |
| 461 | int updateLast = wxMax(m_updateFrom + m_updateCount, |
| 462 | from + count); |
| 463 | m_updateFrom = from; |
| 464 | m_updateCount = updateLast - m_updateFrom; |
| 465 | } |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | void wxListBox::RefreshItem(int n) |
| 470 | { |
| 471 | switch ( m_updateCount ) |
| 472 | { |
| 473 | case 0: |
| 474 | // refresh this item only |
| 475 | m_updateFrom = n; |
| 476 | m_updateCount = 1; |
| 477 | break; |
| 478 | |
| 479 | case -1: |
| 480 | // we refresh everything anyhow |
| 481 | break; |
| 482 | |
| 483 | default: |
| 484 | // add this item to the others which we have to refresh |
| 485 | if ( m_updateFrom < n ) |
| 486 | { |
| 487 | if ( m_updateCount < n - m_updateFrom + 1 ) |
| 488 | m_updateCount = n - m_updateFrom + 1; |
| 489 | } |
| 490 | else // n <= m_updateFrom |
| 491 | { |
| 492 | m_updateCount += m_updateFrom - n; |
| 493 | m_updateFrom = n; |
| 494 | } |
| 495 | } |
| 496 | } |
| 497 | |
| 498 | void wxListBox::RefreshAll() |
| 499 | { |
| 500 | m_updateCount = -1; |
| 501 | } |
| 502 | |
| 503 | void wxListBox::RefreshHorzScrollbar() |
| 504 | { |
| 505 | m_maxWidth = 0; // recalculate it |
| 506 | m_updateScrollbarX = TRUE; |
| 507 | } |
| 508 | |
| 509 | void wxListBox::UpdateScrollbars() |
| 510 | { |
| 511 | wxSize size = GetClientSize(); |
| 512 | |
| 513 | // is our height enough to show all items? |
| 514 | int nLines = GetCount(); |
| 515 | wxCoord lineHeight = GetLineHeight(); |
| 516 | bool showScrollbarY = nLines*lineHeight > size.y; |
| 517 | |
| 518 | // check the width too if required |
| 519 | wxCoord charWidth, maxWidth; |
| 520 | bool showScrollbarX; |
| 521 | if ( HasHorzScrollbar() ) |
| 522 | { |
| 523 | charWidth = GetCharWidth(); |
| 524 | maxWidth = GetMaxWidth(); |
| 525 | showScrollbarX = maxWidth > size.x; |
| 526 | } |
| 527 | else // never show it |
| 528 | { |
| 529 | charWidth = maxWidth = 0; |
| 530 | showScrollbarX = FALSE; |
| 531 | } |
| 532 | |
| 533 | // what should be the scrollbar range now? |
| 534 | int scrollRangeX = showScrollbarX |
| 535 | ? (maxWidth + charWidth - 1) / charWidth + 2 // FIXME |
| 536 | : 0; |
| 537 | int scrollRangeY = showScrollbarY |
| 538 | ? nLines + |
| 539 | (size.y % lineHeight + lineHeight - 1) / lineHeight |
| 540 | : 0; |
| 541 | |
| 542 | // reset scrollbars if something changed: either the visibility status |
| 543 | // or the range of a scrollbar which is shown |
| 544 | if ( (showScrollbarY != m_showScrollbarY) || |
| 545 | (showScrollbarX != m_showScrollbarX) || |
| 546 | (showScrollbarY && (scrollRangeY != m_scrollRangeY)) || |
| 547 | (showScrollbarX && (scrollRangeX != m_scrollRangeX)) ) |
| 548 | { |
| 549 | int x, y; |
| 550 | GetViewStart(&x, &y); |
| 551 | SetScrollbars(charWidth, lineHeight, |
| 552 | scrollRangeX, scrollRangeY, |
| 553 | x, y); |
| 554 | |
| 555 | m_showScrollbarX = showScrollbarX; |
| 556 | m_showScrollbarY = showScrollbarY; |
| 557 | |
| 558 | m_scrollRangeX = scrollRangeX; |
| 559 | m_scrollRangeY = scrollRangeY; |
| 560 | } |
| 561 | } |
| 562 | |
| 563 | void wxListBox::UpdateItems() |
| 564 | { |
| 565 | // only refresh the items which must be refreshed |
| 566 | if ( m_updateCount == -1 ) |
| 567 | { |
| 568 | // refresh all |
| 569 | wxLogTrace(_T("listbox"), _T("Refreshing all")); |
| 570 | |
| 571 | Refresh(); |
| 572 | } |
| 573 | else |
| 574 | { |
| 575 | wxSize size = GetClientSize(); |
| 576 | wxRect rect; |
| 577 | rect.width = size.x; |
| 578 | rect.height = size.y; |
| 579 | rect.y += m_updateFrom*GetLineHeight(); |
| 580 | rect.height = m_updateCount*GetLineHeight(); |
| 581 | |
| 582 | // we don't need to calculate x position as we always refresh the |
| 583 | // entire line(s) |
| 584 | CalcScrolledPosition(0, rect.y, NULL, &rect.y); |
| 585 | |
| 586 | wxLogTrace(_T("listbox"), _T("Refreshing items %d..%d (%d-%d)"), |
| 587 | m_updateFrom, m_updateFrom + m_updateCount - 1, |
| 588 | rect.GetTop(), rect.GetBottom()); |
| 589 | |
| 590 | Refresh(TRUE, &rect); |
| 591 | } |
| 592 | } |
| 593 | |
| 594 | void wxListBox::OnIdle(wxIdleEvent& event) |
| 595 | { |
| 596 | if ( m_updateScrollbarY || m_updateScrollbarX ) |
| 597 | { |
| 598 | UpdateScrollbars(); |
| 599 | |
| 600 | m_updateScrollbarX = |
| 601 | m_updateScrollbarY = FALSE; |
| 602 | } |
| 603 | |
| 604 | if ( m_currentChanged ) |
| 605 | { |
| 606 | DoEnsureVisible(m_current); |
| 607 | |
| 608 | m_currentChanged = FALSE; |
| 609 | } |
| 610 | |
| 611 | if ( m_updateCount ) |
| 612 | { |
| 613 | UpdateItems(); |
| 614 | |
| 615 | m_updateCount = 0; |
| 616 | } |
| 617 | |
| 618 | event.Skip(); |
| 619 | } |
| 620 | |
| 621 | // ---------------------------------------------------------------------------- |
| 622 | // drawing |
| 623 | // ---------------------------------------------------------------------------- |
| 624 | |
| 625 | wxBorder wxListBox::GetDefaultBorder() const |
| 626 | { |
| 627 | return wxBORDER_SUNKEN; |
| 628 | } |
| 629 | |
| 630 | void wxListBox::DoDraw(wxControlRenderer *renderer) |
| 631 | { |
| 632 | // adjust the DC to account for scrolling |
| 633 | wxDC& dc = renderer->GetDC(); |
| 634 | PrepareDC(dc); |
| 635 | dc.SetFont(GetFont()); |
| 636 | |
| 637 | // get the update rect |
| 638 | wxRect rectUpdate = GetUpdateClientRect(); |
| 639 | |
| 640 | int yTop, yBottom; |
| 641 | CalcUnscrolledPosition(0, rectUpdate.GetTop(), NULL, &yTop); |
| 642 | CalcUnscrolledPosition(0, rectUpdate.GetBottom(), NULL, &yBottom); |
| 643 | |
| 644 | // get the items which must be redrawn |
| 645 | wxCoord lineHeight = GetLineHeight(); |
| 646 | size_t itemFirst = yTop / lineHeight, |
| 647 | itemLast = (yBottom + lineHeight - 1) / lineHeight, |
| 648 | itemMax = m_strings.GetCount(); |
| 649 | |
| 650 | if ( itemFirst >= itemMax ) |
| 651 | return; |
| 652 | |
| 653 | if ( itemLast > itemMax ) |
| 654 | itemLast = itemMax; |
| 655 | |
| 656 | // do draw them |
| 657 | wxLogTrace(_T("listbox"), _T("Repainting items %d..%d"), |
| 658 | itemFirst, itemLast); |
| 659 | |
| 660 | DoDrawRange(renderer, itemFirst, itemLast); |
| 661 | } |
| 662 | |
| 663 | void wxListBox::DoDrawRange(wxControlRenderer *renderer, |
| 664 | int itemFirst, int itemLast) |
| 665 | { |
| 666 | renderer->DrawItems(this, itemFirst, itemLast); |
| 667 | } |
| 668 | |
| 669 | // ---------------------------------------------------------------------------- |
| 670 | // size calculations |
| 671 | // ---------------------------------------------------------------------------- |
| 672 | |
| 673 | bool wxListBox::SetFont(const wxFont& font) |
| 674 | { |
| 675 | if ( !wxControl::SetFont(font) ) |
| 676 | return FALSE; |
| 677 | |
| 678 | CalcItemsPerPage(); |
| 679 | |
| 680 | RefreshAll(); |
| 681 | |
| 682 | return TRUE; |
| 683 | } |
| 684 | |
| 685 | void wxListBox::CalcItemsPerPage() |
| 686 | { |
| 687 | m_lineHeight = GetRenderer()->GetListboxItemHeight(GetCharHeight()); |
| 688 | m_itemsPerPage = GetClientSize().y / m_lineHeight; |
| 689 | } |
| 690 | |
| 691 | int wxListBox::GetItemsPerPage() const |
| 692 | { |
| 693 | if ( !m_itemsPerPage ) |
| 694 | { |
| 695 | wxConstCast(this, wxListBox)->CalcItemsPerPage(); |
| 696 | } |
| 697 | |
| 698 | return m_itemsPerPage; |
| 699 | } |
| 700 | |
| 701 | wxCoord wxListBox::GetLineHeight() const |
| 702 | { |
| 703 | if ( !m_lineHeight ) |
| 704 | { |
| 705 | wxConstCast(this, wxListBox)->CalcItemsPerPage(); |
| 706 | } |
| 707 | |
| 708 | return m_lineHeight; |
| 709 | } |
| 710 | |
| 711 | wxCoord wxListBox::GetMaxWidth() const |
| 712 | { |
| 713 | if ( m_maxWidth == 0 ) |
| 714 | { |
| 715 | wxListBox *self = wxConstCast(this, wxListBox); |
| 716 | wxCoord width; |
| 717 | size_t count = m_strings.GetCount(); |
| 718 | for ( size_t n = 0; n < count; n++ ) |
| 719 | { |
| 720 | GetTextExtent(m_strings[n], &width, NULL); |
| 721 | if ( width > m_maxWidth ) |
| 722 | { |
| 723 | self->m_maxWidth = width; |
| 724 | self->m_maxWidthItem = n; |
| 725 | } |
| 726 | } |
| 727 | } |
| 728 | |
| 729 | return m_maxWidth; |
| 730 | } |
| 731 | |
| 732 | void wxListBox::OnSize(wxSizeEvent& event) |
| 733 | { |
| 734 | // recalculate the number of items per page |
| 735 | CalcItemsPerPage(); |
| 736 | |
| 737 | // the scrollbars might [dis]appear |
| 738 | m_updateScrollbarX = |
| 739 | m_updateScrollbarY = TRUE; |
| 740 | |
| 741 | event.Skip(); |
| 742 | } |
| 743 | |
| 744 | void wxListBox::DoSetFirstItem(int n) |
| 745 | { |
| 746 | SetCurrentItem(n); |
| 747 | } |
| 748 | |
| 749 | void wxListBox::DoSetSize(int x, int y, |
| 750 | int width, int height, |
| 751 | int sizeFlags) |
| 752 | { |
| 753 | if ( GetWindowStyle() & wxLB_INT_HEIGHT ) |
| 754 | { |
| 755 | // we must round up the height to an entire number of rows |
| 756 | |
| 757 | // the client area must contain an int number of rows, so take borders |
| 758 | // into account |
| 759 | wxRect rectBorders = GetRenderer()->GetBorderDimensions(GetBorder()); |
| 760 | wxCoord hBorders = rectBorders.y + rectBorders.height; |
| 761 | |
| 762 | wxCoord hLine = GetLineHeight(); |
| 763 | height = ((height - hBorders + hLine - 1) / hLine)*hLine + hBorders; |
| 764 | } |
| 765 | |
| 766 | wxListBoxBase::DoSetSize(x, y, width, height); |
| 767 | } |
| 768 | |
| 769 | wxSize wxListBox::DoGetBestClientSize() const |
| 770 | { |
| 771 | wxCoord width = 0, |
| 772 | height = 0; |
| 773 | |
| 774 | size_t count = m_strings.GetCount(); |
| 775 | for ( size_t n = 0; n < count; n++ ) |
| 776 | { |
| 777 | wxCoord w,h; |
| 778 | GetTextExtent(m_strings[n], &w, &h); |
| 779 | |
| 780 | if ( w > width ) |
| 781 | width = w; |
| 782 | if ( h > height ) |
| 783 | height = h; |
| 784 | } |
| 785 | |
| 786 | // if the listbox is empty, still give it some non zero (even if |
| 787 | // arbitrary) size - otherwise, leave small margin around the strings |
| 788 | if ( !width ) |
| 789 | width = 100; |
| 790 | else |
| 791 | width += 3*GetCharWidth(); |
| 792 | |
| 793 | if ( !height ) |
| 794 | height = GetCharHeight(); |
| 795 | |
| 796 | // we need the height of the entire listbox, not just of one line |
| 797 | height *= wxMax(count, 7); |
| 798 | |
| 799 | return wxSize(width, height); |
| 800 | } |
| 801 | |
| 802 | // ---------------------------------------------------------------------------- |
| 803 | // listbox actions |
| 804 | // ---------------------------------------------------------------------------- |
| 805 | |
| 806 | bool wxListBox::SendEvent(wxEventType type, int item) |
| 807 | { |
| 808 | // don't generate select events while the mouse is captured, we will only |
| 809 | // send them once it is released |
| 810 | if ( (type == wxEVT_COMMAND_LISTBOX_SELECTED) && (GetCapture() == this) ) |
| 811 | return FALSE; |
| 812 | |
| 813 | wxCommandEvent event(type, m_windowId); |
| 814 | event.SetEventObject(this); |
| 815 | |
| 816 | // use the current item by default |
| 817 | if ( item == -1 ) |
| 818 | { |
| 819 | item = m_current; |
| 820 | } |
| 821 | |
| 822 | // client data and string parameters only make sense if we have an item |
| 823 | if ( item != -1 ) |
| 824 | { |
| 825 | if ( HasClientObjectData() ) |
| 826 | event.SetClientObject(GetClientObject(item)); |
| 827 | else if ( HasClientUntypedData() ) |
| 828 | event.SetClientData(GetClientData(item)); |
| 829 | |
| 830 | event.SetString(GetString(item)); |
| 831 | } |
| 832 | |
| 833 | event.m_commandInt = item; |
| 834 | |
| 835 | return GetEventHandler()->ProcessEvent(event); |
| 836 | } |
| 837 | |
| 838 | void wxListBox::SetCurrentItem(int n) |
| 839 | { |
| 840 | if ( n != m_current ) |
| 841 | { |
| 842 | if ( m_current != -1 ) |
| 843 | RefreshItem(m_current); |
| 844 | |
| 845 | m_current = n; |
| 846 | |
| 847 | if ( m_current != -1 ) |
| 848 | { |
| 849 | m_currentChanged = TRUE; |
| 850 | |
| 851 | RefreshItem(m_current); |
| 852 | } |
| 853 | } |
| 854 | //else: nothing to do |
| 855 | } |
| 856 | |
| 857 | bool wxListBox::FindItem(const wxString& prefix, bool strictlyAfter) |
| 858 | { |
| 859 | int count = GetCount(); |
| 860 | if ( !count ) |
| 861 | { |
| 862 | // empty listbox, we can't find anything in it |
| 863 | return FALSE; |
| 864 | } |
| 865 | |
| 866 | // start either from the current item or from the next one if strictlyAfter |
| 867 | // is true |
| 868 | int first; |
| 869 | if ( strictlyAfter ) |
| 870 | { |
| 871 | // the following line will set first correctly to 0 if there is no |
| 872 | // selection (m_current == -1) |
| 873 | first = m_current == count - 1 ? 0 : m_current + 1; |
| 874 | } |
| 875 | else // start with the current |
| 876 | { |
| 877 | first = m_current == -1 ? 0 : m_current; |
| 878 | } |
| 879 | |
| 880 | int last = first == 0 ? count - 1 : first - 1; |
| 881 | |
| 882 | // if this is not true we'd never exit from the loop below! |
| 883 | wxASSERT_MSG( first < count && last < count, _T("logic error") ); |
| 884 | |
| 885 | // precompute it outside the loop |
| 886 | size_t len = prefix.length(); |
| 887 | |
| 888 | // loop over all items in the listbox |
| 889 | for ( int item = first; item != last; item < count - 1 ? item++ : item = 0 ) |
| 890 | { |
| 891 | if ( wxStrnicmp(m_strings[item], prefix, len) == 0 ) |
| 892 | { |
| 893 | SetCurrentItem(item); |
| 894 | |
| 895 | if ( !(GetWindowStyle() & wxLB_MULTIPLE) ) |
| 896 | { |
| 897 | DeselectAll(item); |
| 898 | SelectAndNotify(item); |
| 899 | |
| 900 | if ( GetWindowStyle() & wxLB_EXTENDED ) |
| 901 | AnchorSelection(item); |
| 902 | } |
| 903 | |
| 904 | return TRUE; |
| 905 | } |
| 906 | } |
| 907 | |
| 908 | // nothing found |
| 909 | return FALSE; |
| 910 | } |
| 911 | |
| 912 | void wxListBox::EnsureVisible(int n) |
| 913 | { |
| 914 | if ( m_updateScrollbarY ) |
| 915 | { |
| 916 | UpdateScrollbars(); |
| 917 | |
| 918 | m_updateScrollbarX = |
| 919 | m_updateScrollbarY = FALSE; |
| 920 | } |
| 921 | |
| 922 | DoEnsureVisible(n); |
| 923 | } |
| 924 | |
| 925 | void wxListBox::DoEnsureVisible(int n) |
| 926 | { |
| 927 | if ( !m_showScrollbarY ) |
| 928 | { |
| 929 | // nothing to do - everything is shown anyhow |
| 930 | return; |
| 931 | } |
| 932 | |
| 933 | int first; |
| 934 | GetViewStart(0, &first); |
| 935 | if ( first > n ) |
| 936 | { |
| 937 | // we need to scroll upwards, so make the current item appear on top |
| 938 | // of the shown range |
| 939 | Scroll(0, n); |
| 940 | } |
| 941 | else |
| 942 | { |
| 943 | int last = first + GetClientSize().y / GetLineHeight() - 1; |
| 944 | if ( last < n ) |
| 945 | { |
| 946 | // scroll down: the current item appears at the bottom of the |
| 947 | // range |
| 948 | Scroll(0, n - (last - first)); |
| 949 | } |
| 950 | } |
| 951 | } |
| 952 | |
| 953 | void wxListBox::ChangeCurrent(int diff) |
| 954 | { |
| 955 | int current = m_current == -1 ? 0 : m_current; |
| 956 | |
| 957 | current += diff; |
| 958 | |
| 959 | int last = GetCount() - 1; |
| 960 | if ( current < 0 ) |
| 961 | current = 0; |
| 962 | else if ( current > last ) |
| 963 | current = last; |
| 964 | |
| 965 | SetCurrentItem(current); |
| 966 | } |
| 967 | |
| 968 | void wxListBox::ExtendSelection(int itemTo) |
| 969 | { |
| 970 | // if we don't have the explicit values for selection start/end, make them |
| 971 | // up |
| 972 | if ( m_selAnchor == -1 ) |
| 973 | m_selAnchor = m_current; |
| 974 | |
| 975 | if ( itemTo == -1 ) |
| 976 | itemTo = m_current; |
| 977 | |
| 978 | // swap the start/end of selection range if necessary |
| 979 | int itemFrom = m_selAnchor; |
| 980 | if ( itemFrom > itemTo ) |
| 981 | { |
| 982 | int itemTmp = itemFrom; |
| 983 | itemFrom = itemTo; |
| 984 | itemTo = itemTmp; |
| 985 | } |
| 986 | |
| 987 | // the selection should now include all items in the range between the |
| 988 | // anchor and the specified item and only them |
| 989 | |
| 990 | int n; |
| 991 | for ( n = 0; n < itemFrom; n++ ) |
| 992 | { |
| 993 | Deselect(n); |
| 994 | } |
| 995 | |
| 996 | for ( ; n <= itemTo; n++ ) |
| 997 | { |
| 998 | SetSelection(n); |
| 999 | } |
| 1000 | |
| 1001 | int count = GetCount(); |
| 1002 | for ( ; n < count; n++ ) |
| 1003 | { |
| 1004 | Deselect(n); |
| 1005 | } |
| 1006 | } |
| 1007 | |
| 1008 | void wxListBox::Select(bool sel, int item) |
| 1009 | { |
| 1010 | if ( item != -1 ) |
| 1011 | { |
| 1012 | // go to this item first |
| 1013 | SetCurrentItem(item); |
| 1014 | } |
| 1015 | |
| 1016 | // the current item is the one we want to change: either it was just |
| 1017 | // changed above to be the same as item or item == -1 in which we case we |
| 1018 | // are supposed to use the current one anyhow |
| 1019 | if ( m_current != -1 ) |
| 1020 | { |
| 1021 | // [de]select it |
| 1022 | SetSelection(m_current, sel); |
| 1023 | } |
| 1024 | } |
| 1025 | |
| 1026 | void wxListBox::SelectAndNotify(int item) |
| 1027 | { |
| 1028 | Select(TRUE, item); |
| 1029 | |
| 1030 | SendEvent(wxEVT_COMMAND_LISTBOX_SELECTED); |
| 1031 | } |
| 1032 | |
| 1033 | void wxListBox::Activate(int item) |
| 1034 | { |
| 1035 | if ( item != -1 ) |
| 1036 | SetCurrentItem(item); |
| 1037 | else |
| 1038 | item = m_current; |
| 1039 | |
| 1040 | if ( !(GetWindowStyle() & wxLB_MULTIPLE) ) |
| 1041 | { |
| 1042 | DeselectAll(item); |
| 1043 | } |
| 1044 | |
| 1045 | if ( item != -1 ) |
| 1046 | { |
| 1047 | Select(TRUE, item); |
| 1048 | |
| 1049 | SendEvent(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED); |
| 1050 | } |
| 1051 | } |
| 1052 | |
| 1053 | // ---------------------------------------------------------------------------- |
| 1054 | // input handling |
| 1055 | // ---------------------------------------------------------------------------- |
| 1056 | |
| 1057 | bool wxListBox::PerformAction(const wxControlAction& action, |
| 1058 | long numArg, |
| 1059 | const wxString& strArg) |
| 1060 | { |
| 1061 | int item = (int)numArg; |
| 1062 | |
| 1063 | if ( action == wxACTION_LISTBOX_SETFOCUS ) |
| 1064 | SetCurrentItem(item); |
| 1065 | else if ( action == wxACTION_LISTBOX_ACTIVATE ) |
| 1066 | Activate(item); |
| 1067 | else if ( action == wxACTION_LISTBOX_TOGGLE ) |
| 1068 | { |
| 1069 | if ( item == -1 ) |
| 1070 | item = m_current; |
| 1071 | |
| 1072 | if ( IsSelected(item) ) |
| 1073 | Unselect(item); |
| 1074 | else |
| 1075 | SelectAndNotify(item); |
| 1076 | } |
| 1077 | else if ( action == wxACTION_LISTBOX_SELECT ) |
| 1078 | { |
| 1079 | DeselectAll(item); |
| 1080 | SelectAndNotify(item); |
| 1081 | } |
| 1082 | else if ( action == wxACTION_LISTBOX_SELECTADD ) |
| 1083 | Select(TRUE, item); |
| 1084 | else if ( action == wxACTION_LISTBOX_UNSELECT ) |
| 1085 | Select(FALSE, item); |
| 1086 | else if ( action == wxACTION_LISTBOX_MOVEDOWN ) |
| 1087 | ChangeCurrent(1); |
| 1088 | else if ( action == wxACTION_LISTBOX_MOVEUP ) |
| 1089 | ChangeCurrent(-1); |
| 1090 | else if ( action == wxACTION_LISTBOX_PAGEDOWN ) |
| 1091 | ChangeCurrent(GetItemsPerPage()); |
| 1092 | else if ( action == wxACTION_LISTBOX_PAGEUP ) |
| 1093 | ChangeCurrent(-GetItemsPerPage()); |
| 1094 | else if ( action == wxACTION_LISTBOX_START ) |
| 1095 | SetCurrentItem(0); |
| 1096 | else if ( action == wxACTION_LISTBOX_END ) |
| 1097 | SetCurrentItem(GetCount() - 1); |
| 1098 | else if ( action == wxACTION_LISTBOX_UNSELECTALL ) |
| 1099 | DeselectAll(item); |
| 1100 | else if ( action == wxACTION_LISTBOX_EXTENDSEL ) |
| 1101 | ExtendSelection(item); |
| 1102 | else if ( action == wxACTION_LISTBOX_FIND ) |
| 1103 | FindNextItem(strArg); |
| 1104 | else if ( action == wxACTION_LISTBOX_ANCHOR ) |
| 1105 | AnchorSelection(item == -1 ? m_current : item); |
| 1106 | else if ( action == wxACTION_LISTBOX_SELECTALL || |
| 1107 | action == wxACTION_LISTBOX_SELTOGGLE ) |
| 1108 | wxFAIL_MSG(_T("unimplemented yet")); |
| 1109 | else |
| 1110 | return wxControl::PerformAction(action, numArg, strArg); |
| 1111 | |
| 1112 | return TRUE; |
| 1113 | } |
| 1114 | |
| 1115 | // ============================================================================ |
| 1116 | // implementation of wxStdListboxInputHandler |
| 1117 | // ============================================================================ |
| 1118 | |
| 1119 | wxStdListboxInputHandler::wxStdListboxInputHandler(wxInputHandler *handler, |
| 1120 | bool toggleOnPressAlways) |
| 1121 | : wxStdInputHandler(handler) |
| 1122 | { |
| 1123 | m_btnCapture = 0; |
| 1124 | m_toggleOnPressAlways = toggleOnPressAlways; |
| 1125 | m_actionMouse = wxACTION_NONE; |
| 1126 | m_trackMouseOutside = TRUE; |
| 1127 | } |
| 1128 | |
| 1129 | int wxStdListboxInputHandler::HitTest(const wxListBox *lbox, |
| 1130 | const wxMouseEvent& event) |
| 1131 | { |
| 1132 | int item = HitTestUnsafe(lbox, event); |
| 1133 | |
| 1134 | return FixItemIndex(lbox, item); |
| 1135 | } |
| 1136 | |
| 1137 | int wxStdListboxInputHandler::HitTestUnsafe(const wxListBox *lbox, |
| 1138 | const wxMouseEvent& event) |
| 1139 | { |
| 1140 | wxPoint pt = event.GetPosition(); |
| 1141 | pt -= lbox->GetClientAreaOrigin(); |
| 1142 | int y; |
| 1143 | lbox->CalcUnscrolledPosition(0, pt.y, NULL, &y); |
| 1144 | return y / lbox->GetLineHeight(); |
| 1145 | } |
| 1146 | |
| 1147 | int wxStdListboxInputHandler::FixItemIndex(const wxListBox *lbox, |
| 1148 | int item) |
| 1149 | { |
| 1150 | if ( item < 0 ) |
| 1151 | { |
| 1152 | // mouse is above the first item |
| 1153 | item = 0; |
| 1154 | } |
| 1155 | else if ( item >= lbox->GetCount() ) |
| 1156 | { |
| 1157 | // mouse is below the last item |
| 1158 | item = lbox->GetCount() - 1; |
| 1159 | } |
| 1160 | |
| 1161 | return item; |
| 1162 | } |
| 1163 | |
| 1164 | bool wxStdListboxInputHandler::IsValidIndex(const wxListBox *lbox, int item) |
| 1165 | { |
| 1166 | return item >= 0 && item < lbox->GetCount(); |
| 1167 | } |
| 1168 | |
| 1169 | wxControlAction |
| 1170 | wxStdListboxInputHandler::SetupCapture(wxListBox *lbox, |
| 1171 | const wxMouseEvent& event, |
| 1172 | int item) |
| 1173 | { |
| 1174 | // we currently only allow selecting with the left mouse button, if we |
| 1175 | // do need to allow using other buttons too we might use the code |
| 1176 | // inside #if 0 |
| 1177 | #if 0 |
| 1178 | m_btnCapture = event.LeftDown() |
| 1179 | ? 1 |
| 1180 | : event.RightDown() |
| 1181 | ? 3 |
| 1182 | : 2; |
| 1183 | #else |
| 1184 | m_btnCapture = 1; |
| 1185 | #endif // 0/1 |
| 1186 | |
| 1187 | wxControlAction action; |
| 1188 | if ( lbox->HasMultipleSelection() ) |
| 1189 | { |
| 1190 | if ( lbox->GetWindowStyle() & wxLB_MULTIPLE ) |
| 1191 | { |
| 1192 | if ( m_toggleOnPressAlways ) |
| 1193 | { |
| 1194 | // toggle the item right now |
| 1195 | action = wxACTION_LISTBOX_TOGGLE; |
| 1196 | } |
| 1197 | //else: later |
| 1198 | |
| 1199 | m_actionMouse = wxACTION_LISTBOX_SETFOCUS; |
| 1200 | } |
| 1201 | else // wxLB_EXTENDED listbox |
| 1202 | { |
| 1203 | // simple click in an extended sel listbox clears the old |
| 1204 | // selection and adds the clicked item to it then, ctrl-click |
| 1205 | // toggles an item to it and shift-click adds a range between |
| 1206 | // the old selection anchor and the clicked item |
| 1207 | if ( event.ControlDown() ) |
| 1208 | { |
| 1209 | lbox->PerformAction(wxACTION_LISTBOX_ANCHOR, item); |
| 1210 | |
| 1211 | action = wxACTION_LISTBOX_TOGGLE; |
| 1212 | } |
| 1213 | else if ( event.ShiftDown() ) |
| 1214 | { |
| 1215 | action = wxACTION_LISTBOX_EXTENDSEL; |
| 1216 | } |
| 1217 | else // simple click |
| 1218 | { |
| 1219 | lbox->PerformAction(wxACTION_LISTBOX_ANCHOR, item); |
| 1220 | |
| 1221 | action = wxACTION_LISTBOX_SELECT; |
| 1222 | } |
| 1223 | |
| 1224 | m_actionMouse = wxACTION_LISTBOX_EXTENDSEL; |
| 1225 | } |
| 1226 | } |
| 1227 | else // single selection |
| 1228 | { |
| 1229 | m_actionMouse = |
| 1230 | action = wxACTION_LISTBOX_SELECT; |
| 1231 | } |
| 1232 | |
| 1233 | // by default we always do track it |
| 1234 | m_trackMouseOutside = TRUE; |
| 1235 | |
| 1236 | return action; |
| 1237 | } |
| 1238 | |
| 1239 | bool wxStdListboxInputHandler::HandleKey(wxInputConsumer *consumer, |
| 1240 | const wxKeyEvent& event, |
| 1241 | bool pressed) |
| 1242 | { |
| 1243 | // we're only interested in the key press events |
| 1244 | if ( pressed && !event.AltDown() ) |
| 1245 | { |
| 1246 | bool isMoveCmd = TRUE; |
| 1247 | int style = consumer->GetInputWindow()->GetWindowStyle(); |
| 1248 | |
| 1249 | wxControlAction action; |
| 1250 | wxString strArg; |
| 1251 | |
| 1252 | int keycode = event.GetKeyCode(); |
| 1253 | switch ( keycode ) |
| 1254 | { |
| 1255 | // movement |
| 1256 | case WXK_UP: action = wxACTION_LISTBOX_MOVEUP; break; |
| 1257 | case WXK_DOWN: action = wxACTION_LISTBOX_MOVEDOWN; break; |
| 1258 | case WXK_PRIOR: action = wxACTION_LISTBOX_PAGEUP; break; |
| 1259 | case WXK_NEXT: action = wxACTION_LISTBOX_PAGEDOWN; break; |
| 1260 | case WXK_HOME: action = wxACTION_LISTBOX_START; break; |
| 1261 | case WXK_END: action = wxACTION_LISTBOX_END; break; |
| 1262 | |
| 1263 | // selection |
| 1264 | case WXK_SPACE: |
| 1265 | if ( style & wxLB_MULTIPLE ) |
| 1266 | { |
| 1267 | action = wxACTION_LISTBOX_TOGGLE; |
| 1268 | isMoveCmd = FALSE; |
| 1269 | } |
| 1270 | break; |
| 1271 | |
| 1272 | case WXK_RETURN: |
| 1273 | action = wxACTION_LISTBOX_ACTIVATE; |
| 1274 | isMoveCmd = FALSE; |
| 1275 | break; |
| 1276 | |
| 1277 | default: |
| 1278 | if ( (keycode < 255) && wxIsalnum(keycode) ) |
| 1279 | { |
| 1280 | action = wxACTION_LISTBOX_FIND; |
| 1281 | strArg = (wxChar)keycode; |
| 1282 | } |
| 1283 | } |
| 1284 | |
| 1285 | if ( !!action ) |
| 1286 | { |
| 1287 | consumer->PerformAction(action, -1, strArg); |
| 1288 | |
| 1289 | if ( isMoveCmd ) |
| 1290 | { |
| 1291 | if ( style & wxLB_SINGLE ) |
| 1292 | { |
| 1293 | // the current item is always the one selected |
| 1294 | consumer->PerformAction(wxACTION_LISTBOX_SELECT); |
| 1295 | } |
| 1296 | else if ( style & wxLB_EXTENDED ) |
| 1297 | { |
| 1298 | if ( event.ShiftDown() ) |
| 1299 | consumer->PerformAction(wxACTION_LISTBOX_EXTENDSEL); |
| 1300 | else |
| 1301 | { |
| 1302 | // select the item and make it the new selection anchor |
| 1303 | consumer->PerformAction(wxACTION_LISTBOX_SELECT); |
| 1304 | consumer->PerformAction(wxACTION_LISTBOX_ANCHOR); |
| 1305 | } |
| 1306 | } |
| 1307 | //else: nothing to do for multiple selection listboxes |
| 1308 | } |
| 1309 | |
| 1310 | return TRUE; |
| 1311 | } |
| 1312 | } |
| 1313 | |
| 1314 | return wxStdInputHandler::HandleKey(consumer, event, pressed); |
| 1315 | } |
| 1316 | |
| 1317 | bool wxStdListboxInputHandler::HandleMouse(wxInputConsumer *consumer, |
| 1318 | const wxMouseEvent& event) |
| 1319 | { |
| 1320 | wxListBox *lbox = wxStaticCast(consumer->GetInputWindow(), wxListBox); |
| 1321 | int item = HitTest(lbox, event); |
| 1322 | wxControlAction action; |
| 1323 | |
| 1324 | // when the left mouse button is pressed, capture the mouse and track the |
| 1325 | // item under mouse (if the mouse leaves the window, we will still be |
| 1326 | // getting the mouse move messages generated by wxScrollWindow) |
| 1327 | if ( event.LeftDown() ) |
| 1328 | { |
| 1329 | // capture the mouse to track the selected item |
| 1330 | lbox->CaptureMouse(); |
| 1331 | |
| 1332 | action = SetupCapture(lbox, event, item); |
| 1333 | } |
| 1334 | else if ( m_btnCapture && event.ButtonUp(m_btnCapture) ) |
| 1335 | { |
| 1336 | // when the left mouse button is released, release the mouse too |
| 1337 | wxWindow *winCapture = wxWindow::GetCapture(); |
| 1338 | if ( winCapture ) |
| 1339 | { |
| 1340 | winCapture->ReleaseMouse(); |
| 1341 | m_btnCapture = 0; |
| 1342 | |
| 1343 | // generate the last event to triiger sending the selection event |
| 1344 | action = m_actionMouse; |
| 1345 | } |
| 1346 | //else: the mouse wasn't presed over the listbox, only released here |
| 1347 | } |
| 1348 | else if ( event.LeftDClick() ) |
| 1349 | { |
| 1350 | action = wxACTION_LISTBOX_ACTIVATE; |
| 1351 | } |
| 1352 | |
| 1353 | if ( !!action ) |
| 1354 | { |
| 1355 | lbox->PerformAction(action, item); |
| 1356 | |
| 1357 | return TRUE; |
| 1358 | } |
| 1359 | |
| 1360 | return wxStdInputHandler::HandleMouse(consumer, event); |
| 1361 | } |
| 1362 | |
| 1363 | bool wxStdListboxInputHandler::HandleMouseMove(wxInputConsumer *consumer, |
| 1364 | const wxMouseEvent& event) |
| 1365 | { |
| 1366 | wxWindow *winCapture = wxWindow::GetCapture(); |
| 1367 | if ( winCapture && (event.GetEventObject() == winCapture) ) |
| 1368 | { |
| 1369 | wxListBox *lbox = wxStaticCast(consumer->GetInputWindow(), wxListBox); |
| 1370 | |
| 1371 | if ( !m_btnCapture || !m_trackMouseOutside ) |
| 1372 | { |
| 1373 | // someone captured the mouse for us (we always set m_btnCapture |
| 1374 | // when we do it ourselves): in this case we only react to |
| 1375 | // the mouse messages when they happen inside the listbox |
| 1376 | if ( lbox->HitTest(event.GetPosition()) != wxHT_WINDOW_INSIDE ) |
| 1377 | return FALSE; |
| 1378 | } |
| 1379 | |
| 1380 | int item = HitTest(lbox, event); |
| 1381 | if ( !m_btnCapture ) |
| 1382 | { |
| 1383 | // now that we have the mouse inside the listbox, do capture it |
| 1384 | // normally - but ensure that we will still ignore the outside |
| 1385 | // events |
| 1386 | SetupCapture(lbox, event, item); |
| 1387 | |
| 1388 | m_trackMouseOutside = FALSE; |
| 1389 | } |
| 1390 | |
| 1391 | if ( IsValidIndex(lbox, item) ) |
| 1392 | { |
| 1393 | lbox->PerformAction(m_actionMouse, item); |
| 1394 | } |
| 1395 | // else: don't pass invalid index to the listbox |
| 1396 | } |
| 1397 | else // we don't have capture any more |
| 1398 | { |
| 1399 | if ( m_btnCapture ) |
| 1400 | { |
| 1401 | // if we lost capture unexpectedly (someone else took the capture |
| 1402 | // from us), return to a consistent state |
| 1403 | m_btnCapture = 0; |
| 1404 | } |
| 1405 | } |
| 1406 | |
| 1407 | return wxStdInputHandler::HandleMouseMove(consumer, event); |
| 1408 | } |
| 1409 | |
| 1410 | #endif // wxUSE_LISTBOX |