src/msw/slider95.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        slider95.cpp
   3 // Purpose:     wxSlider95, using the Win95 trackbar control
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:       wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "slider95.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include <stdio.h>
  25 #include "wx/utils.h"
  26 #include "wx/brush.h"
  27 #endif
  28
  29 #ifdef __WIN95__
  30
  31 #include "wx/msw/slider95.h"
  32 #include "wx/msw/private.h"
  33
  34 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
  35 #include <commctrl.h>
  36 #endif
  37
  38 IMPLEMENT_DYNAMIC_CLASS(wxSlider95, wxControl)
  39
  40 // Slider
  41 wxSlider95::wxSlider95()
  42 {
  43   m_staticValue = 0;
  44   m_staticMin = 0;
  45   m_staticMax = 0;
  46   m_pageSize = 1;
  47   m_lineSize = 1;
  48   m_rangeMax = 0;
  49   m_rangeMin = 0;
  50   m_tickFreq = 0;
  51 }
  52
  53 bool wxSlider95::Create(wxWindow *parent, wxWindowID id,
  54            int value, int minValue, int maxValue,
  55            const wxPoint& pos,
  56            const wxSize& size, long style,
  57            const wxValidator& validator,
  58            const wxString& name)
  59 {
  60   SetName(name);
  61   SetValidator(validator);
  62
  63   if (parent) parent->AddChild(this);
  64   SetBackgroundColour(parent->GetBackgroundColour()) ;
  65   SetForegroundColour(parent->GetForegroundColour()) ;
  66
  67   m_staticValue = 0;
  68   m_staticMin = 0;
  69   m_staticMax = 0;
  70   m_pageSize = 1;
  71   m_lineSize = 1;
  72   m_windowStyle = style;
  73   m_tickFreq = 0;
  74
  75   if ( id == -1 )
  76       m_windowId = (int)NewControlId();
  77   else
  78     m_windowId = id;
  79
  80   int x = pos.x;
  81   int y = pos.y;
  82   int width = size.x;
  83   int height = size.y;
  84
  85   long msStyle ;
  86
  87   if ( m_windowStyle & wxSL_LABELS )
  88   {
  89       msStyle = WS_CHILD | WS_VISIBLE | WS_BORDER | SS_CENTER;
  90
  91       bool want3D;
  92       WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ;
  93
  94       m_staticValue = (WXHWND) CreateWindowEx(exStyle, wxT("STATIC"), NULL,
  95                                msStyle,
  96                                0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)NewControlId(),
  97                                wxGetInstance(), NULL);
  98
  99       // Now create min static control
 100       wxSprintf(wxBuffer, wxT("%d"), minValue);
 101       m_staticMin = (WXHWND) CreateWindowEx(0, wxT("STATIC"), wxBuffer,
 102                              STATIC_FLAGS,
 103                              0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)NewControlId(),
 104                              wxGetInstance(), NULL);
 105   }
 106
 107   msStyle = 0;
 108   if (m_windowStyle & wxSL_VERTICAL)
 109     msStyle = TBS_VERT | WS_CHILD | WS_VISIBLE | WS_TABSTOP ;
 110   else
 111     msStyle = TBS_HORZ | WS_CHILD | WS_VISIBLE | WS_TABSTOP ;
 112
 113   if ( m_windowStyle & wxSL_AUTOTICKS )
 114     msStyle |= TBS_AUTOTICKS ;
 115
 116   if ( m_windowStyle & wxSL_LEFT )
 117     msStyle |= TBS_LEFT;
 118   else if ( m_windowStyle & wxSL_RIGHT )
 119       msStyle |= TBS_RIGHT;
 120   else if ( m_windowStyle & wxSL_TOP )
 121     msStyle |= TBS_TOP;
 122   else if ( m_windowStyle & wxSL_BOTTOM )
 123     msStyle |= TBS_BOTTOM;
 124   else if ( m_windowStyle & wxSL_BOTH )
 125     msStyle |= TBS_BOTH;
 126   else if ( ! (m_windowStyle & wxSL_AUTOTICKS) )
 127     msStyle |= TBS_NOTICKS;
 128
 129   if ( m_windowStyle & wxSL_SELRANGE )
 130     msStyle |= TBS_ENABLESELRANGE ;
 131
 132   HWND scroll_bar = CreateWindowEx(MakeExtendedStyle(m_windowStyle), TRACKBAR_CLASS, wxBuffer,
 133                          msStyle,
 134                          0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
 135                          wxGetInstance(), NULL);
 136
 137   m_rangeMax = maxValue;
 138   m_rangeMin = minValue;
 139
 140   m_pageSize = (int)((maxValue-minValue)/10);
 141
 142   ::SendMessage(scroll_bar, TBM_SETRANGE, TRUE, MAKELONG(minValue, maxValue));
 143   ::SendMessage(scroll_bar, TBM_SETPOS, TRUE, (LPARAM)value);
 144   ::SendMessage(scroll_bar, TBM_SETPAGESIZE, 0, (LPARAM)m_pageSize);
 145
 146   m_hWnd = (WXHWND)scroll_bar;
 147
 148   SubclassWin(GetHWND());
 149
 150   SetWindowText((HWND) m_hWnd, wxT(""));
 151
 152   SetFont(parent->GetFont());
 153
 154   if ( m_windowStyle & wxSL_LABELS )
 155   {
 156       // Finally, create max value static item
 157       wxSprintf(wxBuffer, wxT("%d"), maxValue);
 158       m_staticMax = (WXHWND) CreateWindowEx(0, wxT("STATIC"), wxBuffer,
 159                              STATIC_FLAGS,
 160                              0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)NewControlId(),
 161                              wxGetInstance(), NULL);
 162
 163
 164       if (GetFont().Ok())
 165       {
 166         if (GetFont().GetResourceHandle())
 167         {
 168             if ( m_staticMin )
 169                   SendMessage((HWND)m_staticMin,WM_SETFONT,
 170                           (WPARAM)GetFont().GetResourceHandle(),0L);
 171             if ( m_staticMax )
 172                   SendMessage((HWND)m_staticMax,WM_SETFONT,
 173                       (WPARAM)GetFont().GetResourceHandle(),0L);
 174               if (m_staticValue)
 175                 SendMessage((HWND)m_staticValue,WM_SETFONT,
 176                         (WPARAM)GetFont().GetResourceHandle(),0L);
 177         }
 178       }
 179   }
 180
 181   SetSize(x, y, width, height);
 182   SetValue(value);
 183
 184   return TRUE;
 185 }
 186
 187 bool wxSlider95::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam,
 188                              WXWORD pos, WXHWND control)
 189 {
 190     int position = 0; // Dummy - not used in this mode
 191
 192     int nScrollInc;
 193     wxEventType scrollEvent = wxEVT_NULL;
 194     switch ( wParam )
 195     {
 196         case SB_TOP:
 197             nScrollInc = m_rangeMax - position;
 198             scrollEvent = wxEVT_SCROLL_TOP;
 199             break;
 200
 201         case SB_BOTTOM:
 202             nScrollInc = - position;
 203             scrollEvent = wxEVT_SCROLL_BOTTOM;
 204             break;
 205
 206         case SB_LINEUP:
 207             nScrollInc = - GetLineSize();
 208             scrollEvent = wxEVT_SCROLL_LINEUP;
 209             break;
 210
 211         case SB_LINEDOWN:
 212             nScrollInc = GetLineSize();
 213             scrollEvent = wxEVT_SCROLL_LINEDOWN;
 214             break;
 215
 216         case SB_PAGEUP:
 217             nScrollInc = -GetPageSize();
 218             scrollEvent = wxEVT_SCROLL_PAGEUP;
 219             break;
 220
 221         case SB_PAGEDOWN:
 222             nScrollInc = GetPageSize();
 223             scrollEvent = wxEVT_SCROLL_PAGEDOWN;
 224             break;
 225
 226         case SB_THUMBTRACK:
 227         case SB_THUMBPOSITION:
 228 #ifdef __WIN32__
 229             nScrollInc = (signed short)pos - position;
 230 #else // Win16
 231             nScrollInc = pos - position;
 232 #endif // Win32/16
 233             scrollEvent = wxEVT_SCROLL_THUMBTRACK;
 234             break;
 235
 236         default:
 237             nScrollInc = 0;
 238     }
 239
 240     if (scrollEvent == wxEVT_NULL)
 241     {
 242         // no event...
 243         return FALSE;
 244     }
 245
 246     int newPos = (int)::SendMessage((HWND) control, TBM_GETPOS, 0, 0);
 247     if ( (newPos < GetMin()) || (newPos > GetMax()) )
 248     {
 249         // out of range - but we did process it
 250         return TRUE;
 251     }
 252
 253     SetValue(newPos);
 254
 255     wxScrollEvent event(scrollEvent, m_windowId);
 256     event.SetPosition(newPos);
 257     event.SetEventObject( this );
 258     GetEventHandler()->ProcessEvent(event);
 259
 260     wxCommandEvent cevent( wxEVT_COMMAND_SLIDER_UPDATED, GetId() );
 261     cevent.SetEventObject( this );
 262
 263     return GetEventHandler()->ProcessEvent( cevent );
 264 }
 265
 266 wxSlider95::~wxSlider95()
 267 {
 268     if (m_staticMin)
 269       DestroyWindow((HWND) m_staticMin);
 270     if (m_staticMax)
 271       DestroyWindow((HWND) m_staticMax);
 272     if (m_staticValue)
 273       DestroyWindow((HWND) m_staticValue);
 274 }
 275
 276 int wxSlider95::GetValue() const
 277 {
 278   return ::SendMessage(GetHwnd(), TBM_GETPOS, 0, 0);
 279 }
 280
 281 void wxSlider95::SetValue(int value)
 282 {
 283   ::SendMessage(GetHwnd(), TBM_SETPOS, (WPARAM)TRUE, (LPARAM)value);
 284   if (m_staticValue)
 285   {
 286     wxSprintf(wxBuffer, wxT("%d"), value);
 287     SetWindowText((HWND) m_staticValue, wxBuffer);
 288   }
 289 }
 290
 291 void wxSlider95::GetSize(int *width, int *height) const
 292 {
 293   RECT rect;
 294   rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 295
 296   wxFindMaxSize(GetHWND(), &rect);
 297
 298   if (m_staticMin)
 299     wxFindMaxSize(m_staticMin, &rect);
 300   if (m_staticMax)
 301     wxFindMaxSize(m_staticMax, &rect);
 302   if (m_staticValue)
 303     wxFindMaxSize(m_staticValue, &rect);
 304
 305   *width = rect.right - rect.left;
 306   *height = rect.bottom - rect.top;
 307 }
 308
 309 void wxSlider95::GetPosition(int *x, int *y) const
 310 {
 311   wxWindow *parent = GetParent();
 312   RECT rect;
 313   rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 314
 315   wxFindMaxSize(GetHWND(), &rect);
 316
 317   if (m_staticMin)
 318     wxFindMaxSize(m_staticMin, &rect);
 319   if (m_staticMax)
 320     wxFindMaxSize(m_staticMax, &rect);
 321   if (m_staticValue)
 322     wxFindMaxSize(m_staticValue, &rect);
 323
 324   // Since we now have the absolute screen coords,
 325   // if there's a parent we must subtract its top left corner
 326   POINT point;
 327   point.x = rect.left;
 328   point.y = rect.top;
 329   if (parent)
 330     ::ScreenToClient((HWND) parent->GetHWND(), &point);
 331
 332   // We may be faking the client origin.
 333   // So a window that's really at (0, 30) may appear
 334   // (to wxWin apps) to be at (0, 0).
 335   if (GetParent())
 336   {
 337     wxPoint pt(GetParent()->GetClientAreaOrigin());
 338     point.x -= pt.x;
 339     point.y -= pt.y;
 340   }
 341   *x = point.x;
 342   *y = point.y;
 343 }
 344
 345 // TODO one day, make sense of all this horros and replace it with a readable
 346 //      DoGetBestSize()
 347 void wxSlider95::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 348 {
 349   int x1 = x;
 350   int y1 = y;
 351   int w1 = width;
 352   int h1 = height;
 353
 354   int currentX, currentY;
 355   GetPosition(&currentX, &currentY);
 356   if (x == -1 && !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 357     x1 = currentX;
 358   if (y == -1 && !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 359     y1 = currentY;
 360
 361   AdjustForParentClientOrigin(x1, y1, sizeFlags);
 362
 363   wxChar buf[300];
 364
 365   int x_offset = x;
 366   int y_offset = y;
 367
 368   int cx;     // slider,min,max sizes
 369   int cy;
 370   int cyf;
 371
 372   wxGetCharSize(GetHWND(), &cx, &cy, & this->GetFont());
 373
 374   if ((m_windowStyle & wxSL_VERTICAL) != wxSL_VERTICAL)
 375   {
 376     if ( m_windowStyle & wxSL_LABELS )
 377     {
 378     int min_len = 0;
 379
 380     GetWindowText((HWND) m_staticMin, buf, 300);
 381     GetTextExtent(buf, &min_len, &cyf,NULL,NULL, & this->GetFont());
 382
 383     int max_len = 0;
 384
 385     GetWindowText((HWND) m_staticMax, buf, 300);
 386     GetTextExtent(buf, &max_len, &cyf,NULL,NULL, & this->GetFont());
 387     if (m_staticValue)
 388     {
 389       int new_width = (int)(wxMax(min_len, max_len));
 390       int valueHeight = (int)cyf;
 391 #ifdef __WIN32__
 392       // For some reason, under Win95, the text edit control has
 393       // a lot of space before the first character
 394       new_width += 3*cx;
 395 #endif
 396       // The height needs to be a bit bigger under Win95 if using native
 397       // 3D effects.
 398       valueHeight = (int) (valueHeight * 1.5) ;
 399       MoveWindow((HWND) m_staticValue, x_offset, y_offset, new_width, valueHeight, TRUE);
 400       x_offset += new_width + cx;
 401     }
 402
 403     MoveWindow((HWND) m_staticMin, x_offset, y_offset, (int)min_len, cy, TRUE);
 404     x_offset += (int)(min_len + cx);
 405
 406     int slider_length = (int)(w1 - x_offset - max_len - cx);
 407
 408     int slider_height = h1;
 409     if (slider_height < 0 )
 410         slider_height = 20;
 411
 412     // Slider must have a minimum/default length/height
 413     if (slider_length < 100)
 414       slider_length = 100;
 415
 416     MoveWindow(GetHwnd(), x_offset, y_offset, slider_length, slider_height, TRUE);
 417     x_offset += slider_length + cx;
 418
 419     MoveWindow((HWND) m_staticMax, x_offset, y_offset, (int)max_len, cy, TRUE);
 420     }
 421     else
 422     {
 423         // No labels
 424         // If we're prepared to use the existing size, then...
 425         if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO))
 426         {
 427             GetSize(&w1, &h1);
 428         }
 429         if ( w1 < 0 )
 430             w1 = 200;
 431         if ( h1 < 0 )
 432             h1 = 20;
 433         MoveWindow(GetHwnd(), x1, y1, w1, h1, TRUE);
 434     }
 435   }
 436   else
 437   {
 438     if ( m_windowStyle & wxSL_LABELS )
 439     {
 440     int min_len;
 441     GetWindowText((HWND) m_staticMin, buf, 300);
 442     GetTextExtent(buf, &min_len, &cyf,NULL,NULL, & this->GetFont());
 443
 444     int max_len;
 445     GetWindowText((HWND) m_staticMax, buf, 300);
 446     GetTextExtent(buf, &max_len, &cyf,NULL,NULL, & this->GetFont());
 447
 448     if (m_staticValue)
 449     {
 450       int new_width = (int)(wxMax(min_len, max_len));
 451       int valueHeight = (int)cyf;
 452 /*** Suggested change by George Tasker - remove this block...
 453 #ifdef __WIN32__
 454       // For some reason, under Win95, the text edit control has
 455       // a lot of space before the first character
 456       new_width += 3*cx;
 457 #endif
 458  ... and replace with following line: */
 459       new_width += cx;
 460
 461       // The height needs to be a bit bigger under Win95 if using native
 462       // 3D effects.
 463       valueHeight = (int) (valueHeight * 1.5) ;
 464
 465       MoveWindow((HWND) m_staticValue, x_offset, y_offset, new_width, valueHeight, TRUE);
 466       y_offset += valueHeight;
 467     }
 468
 469     MoveWindow((HWND) m_staticMin, x_offset, y_offset, (int)min_len, cy, TRUE);
 470     y_offset += cy;
 471
 472     int slider_length = (int)(h1 - y_offset - cy - cy);
 473
 474     int slider_width = w1;
 475     if (slider_width < 0 )
 476         slider_width = 20;
 477
 478     // Slider must have a minimum/default length
 479     if (slider_length < 100)
 480       slider_length = 100;
 481
 482     MoveWindow(GetHwnd(), x_offset, y_offset, slider_width, slider_length, TRUE);
 483     y_offset += slider_length;
 484
 485     MoveWindow((HWND) m_staticMax, x_offset, y_offset, (int)max_len, cy, TRUE);
 486     }
 487     else
 488     {
 489         // No labels
 490         // If we're prepared to use the existing size, then...
 491         if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO))
 492         {
 493             GetSize(&w1, &h1);
 494         }
 495         if ( w1 < 0 )
 496             w1 = 20;
 497         if ( h1 < 0 )
 498             h1 = 200;
 499         MoveWindow(GetHwnd(), x1, y1, w1, h1, TRUE);
 500     }
 501   }
 502 }
 503
 504 void wxSlider95::SetRange(int minValue, int maxValue)
 505 {
 506   m_rangeMin = minValue;
 507   m_rangeMax = maxValue;
 508
 509   ::SendMessage(GetHwnd(), TBM_SETRANGE, TRUE, MAKELONG(minValue, maxValue));
 510
 511   wxChar buf[40];
 512   if ( m_staticMin )
 513   {
 514       wxSprintf(buf, wxT("%d"), m_rangeMin);
 515       SetWindowText((HWND) m_staticMin, buf);
 516   }
 517
 518   if ( m_staticMax )
 519   {
 520     wxSprintf(buf, wxT("%d"), m_rangeMax);
 521     SetWindowText((HWND) m_staticMax, buf);
 522   }
 523 }
 524
 525 WXHBRUSH wxSlider95::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 526             WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 527 {
 528   if ( nCtlColor == CTLCOLOR_SCROLLBAR )
 529     return 0;
 530
 531   // Otherwise, it's a static
 532   return wxControl::OnCtlColor(pDC, pWnd, nCtlColor, message, wParam, lParam);
 533 }
 534
 535 // For trackbars only
 536 void wxSlider95::SetTickFreq(int n, int pos)
 537 {
 538   m_tickFreq = n;
 539   ::SendMessage( GetHwnd(), TBM_SETTICFREQ, (WPARAM) n, (LPARAM) pos );
 540 }
 541
 542 void wxSlider95::SetPageSize(int pageSize)
 543 {
 544   ::SendMessage( GetHwnd(), TBM_SETPAGESIZE, (WPARAM) 0, (LPARAM) pageSize );
 545   m_pageSize = pageSize;
 546 }
 547
 548 int wxSlider95::GetPageSize() const
 549 {
 550   return m_pageSize;
 551 }
 552
 553 void wxSlider95::ClearSel()
 554 {
 555   ::SendMessage( GetHwnd(), TBM_CLEARSEL, (WPARAM) TRUE, (LPARAM) 0 );
 556 }
 557
 558 void wxSlider95::ClearTicks()
 559 {
 560   ::SendMessage( GetHwnd(), TBM_CLEARTICS, (WPARAM) TRUE, (LPARAM) 0 );
 561 }
 562
 563 void wxSlider95::SetLineSize(int lineSize)
 564 {
 565   m_lineSize = lineSize;
 566   ::SendMessage( GetHwnd(), TBM_SETLINESIZE, (WPARAM) 0, (LPARAM) lineSize );
 567 }
 568
 569 int wxSlider95::GetLineSize() const
 570 {
 571   return (int) ::SendMessage( GetHwnd(), TBM_GETLINESIZE, (WPARAM) 0, (LPARAM) 0 );
 572 }
 573
 574 int wxSlider95::GetSelEnd() const
 575 {
 576   return (int) ::SendMessage( GetHwnd(), TBM_SETSELEND, (WPARAM) 0, (LPARAM) 0 );
 577 }
 578
 579 int wxSlider95::GetSelStart() const
 580 {
 581   return (int) ::SendMessage( GetHwnd(), TBM_GETSELSTART, (WPARAM) 0, (LPARAM) 0 );
 582 }
 583
 584 void wxSlider95::SetSelection(int minPos, int maxPos)
 585 {
 586   ::SendMessage( GetHwnd(), TBM_SETSEL, (WPARAM) TRUE, (LPARAM) MAKELONG( minPos, maxPos) );
 587 }
 588
 589 void wxSlider95::SetThumbLength(int len)
 590 {
 591   ::SendMessage( GetHwnd(), TBM_SETTHUMBLENGTH, (WPARAM) len, (LPARAM) 0 );
 592 }
 593
 594 int wxSlider95::GetThumbLength() const
 595 {
 596   return (int) ::SendMessage( GetHwnd(), TBM_GETTHUMBLENGTH, (WPARAM) 0, (LPARAM) 0 );
 597 }
 598
 599 void wxSlider95::SetTick(int tickPos)
 600 {
 601   ::SendMessage( GetHwnd(), TBM_SETTIC, (WPARAM) 0, (LPARAM) tickPos );
 602 }
 603
 604 bool wxSlider95::ContainsHWND(WXHWND hWnd) const
 605 {
 606     return ( hWnd == GetStaticMin() || hWnd == GetStaticMax() || hWnd == GetEditValue() );
 607 }
 608
 609 void wxSlider95::Command (wxCommandEvent & event)
 610 {
 611   SetValue (event.GetInt());
 612   ProcessCommand (event);
 613 }
 614
 615 bool wxSlider95::Show(bool show)
 616 {
 617     wxWindow::Show(show);
 618
 619     int cshow;
 620     if (show)
 621         cshow = SW_SHOW;
 622     else
 623         cshow = SW_HIDE;
 624
 625     if(m_staticValue)
 626         ShowWindow((HWND) m_staticValue, (BOOL)cshow);
 627     if(m_staticMin)
 628         ShowWindow((HWND) m_staticMin, (BOOL)cshow);
 629     if(m_staticMax)
 630         ShowWindow((HWND) m_staticMax, (BOOL)cshow);
 631     return TRUE;
 632 }
 633
 634 #endif
 635   // __WIN95__
 636