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_OLD__) || defined(__TWIN32__))
  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 #if wxUSE_VALIDATORS
  62   SetValidator(validator);
  63 #endif // wxUSE_VALIDATORS
  64
  65   if (parent) parent->AddChild(this);
  66   SetBackgroundColour(parent->GetBackgroundColour()) ;
  67   SetForegroundColour(parent->GetForegroundColour()) ;
  68
  69   m_staticValue = 0;
  70   m_staticMin = 0;
  71   m_staticMax = 0;
  72   m_pageSize = 1;
  73   m_lineSize = 1;
  74   m_windowStyle = style;
  75   m_tickFreq = 0;
  76
  77   if ( id == -1 )
  78       m_windowId = (int)NewControlId();
  79   else
  80     m_windowId = id;
  81
  82   int x = pos.x;
  83   int y = pos.y;
  84   int width = size.x;
  85   int height = size.y;
  86
  87   long msStyle ;
  88
  89   if ( m_windowStyle & wxSL_LABELS )
  90   {
  91       msStyle = WS_CHILD | WS_VISIBLE | WS_BORDER | SS_CENTER;
  92
  93       bool want3D;
  94       WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ;
  95
  96       m_staticValue = (WXHWND) CreateWindowEx(exStyle, wxT("STATIC"), NULL,
  97                                msStyle,
  98                                0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)NewControlId(),
  99                                wxGetInstance(), NULL);
 100
 101       // Now create min static control
 102       wxSprintf(wxBuffer, wxT("%d"), minValue);
 103       m_staticMin = (WXHWND) CreateWindowEx(0, wxT("STATIC"), wxBuffer,
 104                              STATIC_FLAGS,
 105                              0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)NewControlId(),
 106                              wxGetInstance(), NULL);
 107   }
 108
 109   msStyle = 0;
 110   if (m_windowStyle & wxSL_VERTICAL)
 111     msStyle = TBS_VERT | WS_CHILD | WS_VISIBLE | WS_TABSTOP ;
 112   else
 113     msStyle = TBS_HORZ | WS_CHILD | WS_VISIBLE | WS_TABSTOP ;
 114
 115   if ( m_windowStyle & wxSL_AUTOTICKS )
 116     msStyle |= TBS_AUTOTICKS ;
 117
 118   if ( m_windowStyle & wxSL_LEFT )
 119     msStyle |= TBS_LEFT;
 120   else if ( m_windowStyle & wxSL_RIGHT )
 121       msStyle |= TBS_RIGHT;
 122   else if ( m_windowStyle & wxSL_TOP )
 123     msStyle |= TBS_TOP;
 124   else if ( m_windowStyle & wxSL_BOTTOM )
 125     msStyle |= TBS_BOTTOM;
 126   else if ( m_windowStyle & wxSL_BOTH )
 127     msStyle |= TBS_BOTH;
 128   else if ( ! (m_windowStyle & wxSL_AUTOTICKS) )
 129     msStyle |= TBS_NOTICKS;
 130
 131   if ( m_windowStyle & wxSL_SELRANGE )
 132     msStyle |= TBS_ENABLESELRANGE ;
 133
 134   HWND scroll_bar = CreateWindowEx(MakeExtendedStyle(m_windowStyle), TRACKBAR_CLASS, wxBuffer,
 135                          msStyle,
 136                          0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
 137                          wxGetInstance(), NULL);
 138
 139   m_rangeMax = maxValue;
 140   m_rangeMin = minValue;
 141
 142   m_pageSize = (int)((maxValue-minValue)/10);
 143
 144   ::SendMessage(scroll_bar, TBM_SETRANGE, TRUE, MAKELONG(minValue, maxValue));
 145   ::SendMessage(scroll_bar, TBM_SETPOS, TRUE, (LPARAM)value);
 146   ::SendMessage(scroll_bar, TBM_SETPAGESIZE, 0, (LPARAM)m_pageSize);
 147
 148   m_hWnd = (WXHWND)scroll_bar;
 149
 150   SubclassWin(GetHWND());
 151
 152   SetWindowText((HWND) m_hWnd, wxT(""));
 153
 154   SetFont(parent->GetFont());
 155
 156   if ( m_windowStyle & wxSL_LABELS )
 157   {
 158       // Finally, create max value static item
 159       wxSprintf(wxBuffer, wxT("%d"), maxValue);
 160       m_staticMax = (WXHWND) CreateWindowEx(0, wxT("STATIC"), wxBuffer,
 161                              STATIC_FLAGS,
 162                              0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)NewControlId(),
 163                              wxGetInstance(), NULL);
 164
 165
 166       if (GetFont().Ok())
 167       {
 168         if (GetFont().GetResourceHandle())
 169         {
 170             if ( m_staticMin )
 171                   SendMessage((HWND)m_staticMin,WM_SETFONT,
 172                           (WPARAM)GetFont().GetResourceHandle(),0L);
 173             if ( m_staticMax )
 174                   SendMessage((HWND)m_staticMax,WM_SETFONT,
 175                       (WPARAM)GetFont().GetResourceHandle(),0L);
 176               if (m_staticValue)
 177                 SendMessage((HWND)m_staticValue,WM_SETFONT,
 178                         (WPARAM)GetFont().GetResourceHandle(),0L);
 179         }
 180       }
 181   }
 182
 183   SetSize(x, y, width, height);
 184   SetValue(value);
 185
 186   return TRUE;
 187 }
 188
 189 bool wxSlider95::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam,
 190                              WXWORD pos, WXHWND control)
 191 {
 192     int position = 0; // Dummy - not used in this mode
 193
 194     int nScrollInc;
 195     wxEventType scrollEvent = wxEVT_NULL;
 196     switch ( wParam )
 197     {
 198         case SB_TOP:
 199             nScrollInc = m_rangeMax - position;
 200             scrollEvent = wxEVT_SCROLL_TOP;
 201             break;
 202
 203         case SB_BOTTOM:
 204             nScrollInc = - position;
 205             scrollEvent = wxEVT_SCROLL_BOTTOM;
 206             break;
 207
 208         case SB_LINEUP:
 209             nScrollInc = - GetLineSize();
 210             scrollEvent = wxEVT_SCROLL_LINEUP;
 211             break;
 212
 213         case SB_LINEDOWN:
 214             nScrollInc = GetLineSize();
 215             scrollEvent = wxEVT_SCROLL_LINEDOWN;
 216             break;
 217
 218         case SB_PAGEUP:
 219             nScrollInc = -GetPageSize();
 220             scrollEvent = wxEVT_SCROLL_PAGEUP;
 221             break;
 222
 223         case SB_PAGEDOWN:
 224             nScrollInc = GetPageSize();
 225             scrollEvent = wxEVT_SCROLL_PAGEDOWN;
 226             break;
 227
 228         case SB_THUMBTRACK:
 229         case SB_THUMBPOSITION:
 230 #ifdef __WIN32__
 231             nScrollInc = (signed short)pos - position;
 232 #else // Win16
 233             nScrollInc = pos - position;
 234 #endif // Win32/16
 235             scrollEvent = wxEVT_SCROLL_THUMBTRACK;
 236             break;
 237
 238         default:
 239             nScrollInc = 0;
 240     }
 241
 242     if (scrollEvent == wxEVT_NULL)
 243     {
 244         // no event...
 245         return FALSE;
 246     }
 247
 248     int newPos = (int)::SendMessage((HWND) control, TBM_GETPOS, 0, 0);
 249     if ( (newPos < GetMin()) || (newPos > GetMax()) )
 250     {
 251         // out of range - but we did process it
 252         return TRUE;
 253     }
 254
 255     SetValue(newPos);
 256
 257     wxScrollEvent event(scrollEvent, m_windowId);
 258     event.SetPosition(newPos);
 259     event.SetEventObject( this );
 260     GetEventHandler()->ProcessEvent(event);
 261
 262     wxCommandEvent cevent( wxEVT_COMMAND_SLIDER_UPDATED, GetId() );
 263     cevent.SetInt( newPos );
 264     cevent.SetEventObject( this );
 265
 266     return GetEventHandler()->ProcessEvent( cevent );
 267 }
 268
 269 wxSlider95::~wxSlider95()
 270 {
 271     if (m_staticMin)
 272       DestroyWindow((HWND) m_staticMin);
 273     if (m_staticMax)
 274       DestroyWindow((HWND) m_staticMax);
 275     if (m_staticValue)
 276       DestroyWindow((HWND) m_staticValue);
 277 }
 278
 279 int wxSlider95::GetValue() const
 280 {
 281   return ::SendMessage(GetHwnd(), TBM_GETPOS, 0, 0);
 282 }
 283
 284 void wxSlider95::SetValue(int value)
 285 {
 286   ::SendMessage(GetHwnd(), TBM_SETPOS, (WPARAM)TRUE, (LPARAM)value);
 287   if (m_staticValue)
 288   {
 289     wxSprintf(wxBuffer, wxT("%d"), value);
 290     SetWindowText((HWND) m_staticValue, wxBuffer);
 291   }
 292 }
 293
 294 void wxSlider95::GetSize(int *width, int *height) const
 295 {
 296   RECT rect;
 297   rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 298
 299   wxFindMaxSize(GetHWND(), &rect);
 300
 301   if (m_staticMin)
 302     wxFindMaxSize(m_staticMin, &rect);
 303   if (m_staticMax)
 304     wxFindMaxSize(m_staticMax, &rect);
 305   if (m_staticValue)
 306     wxFindMaxSize(m_staticValue, &rect);
 307
 308   *width = rect.right - rect.left;
 309   *height = rect.bottom - rect.top;
 310 }
 311
 312 void wxSlider95::GetPosition(int *x, int *y) const
 313 {
 314   wxWindow *parent = GetParent();
 315   RECT rect;
 316   rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 317
 318   wxFindMaxSize(GetHWND(), &rect);
 319
 320   if (m_staticMin)
 321     wxFindMaxSize(m_staticMin, &rect);
 322   if (m_staticMax)
 323     wxFindMaxSize(m_staticMax, &rect);
 324   if (m_staticValue)
 325     wxFindMaxSize(m_staticValue, &rect);
 326
 327   // Since we now have the absolute screen coords,
 328   // if there's a parent we must subtract its top left corner
 329   POINT point;
 330   point.x = rect.left;
 331   point.y = rect.top;
 332   if (parent)
 333     ::ScreenToClient((HWND) parent->GetHWND(), &point);
 334
 335   // We may be faking the client origin.
 336   // So a window that's really at (0, 30) may appear
 337   // (to wxWin apps) to be at (0, 0).
 338   if (GetParent())
 339   {
 340     wxPoint pt(GetParent()->GetClientAreaOrigin());
 341     point.x -= pt.x;
 342     point.y -= pt.y;
 343   }
 344   *x = point.x;
 345   *y = point.y;
 346 }
 347
 348 // TODO one day, make sense of all this horros and replace it with a readable
 349 //      DoGetBestSize()
 350 void wxSlider95::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 351 {
 352   int x1 = x;
 353   int y1 = y;
 354   int w1 = width;
 355   int h1 = height;
 356
 357   int currentX, currentY;
 358   GetPosition(&currentX, &currentY);
 359   if (x == -1 && !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 360     x1 = currentX;
 361   if (y == -1 && !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 362     y1 = currentY;
 363
 364   AdjustForParentClientOrigin(x1, y1, sizeFlags);
 365
 366   wxChar buf[300];
 367
 368   int x_offset = x;
 369   int y_offset = y;
 370
 371   int cx;     // slider,min,max sizes
 372   int cy;
 373   int cyf;
 374
 375   wxGetCharSize(GetHWND(), &cx, &cy, & this->GetFont());
 376
 377   if ((m_windowStyle & wxSL_VERTICAL) != wxSL_VERTICAL)
 378   {
 379     if ( m_windowStyle & wxSL_LABELS )
 380     {
 381     int min_len = 0;
 382
 383     GetWindowText((HWND) m_staticMin, buf, 300);
 384     GetTextExtent(buf, &min_len, &cyf,NULL,NULL, & this->GetFont());
 385
 386     int max_len = 0;
 387
 388     GetWindowText((HWND) m_staticMax, buf, 300);
 389     GetTextExtent(buf, &max_len, &cyf,NULL,NULL, & this->GetFont());
 390     if (m_staticValue)
 391     {
 392       int new_width = (int)(wxMax(min_len, max_len));
 393       int valueHeight = (int)cyf;
 394 #ifdef __WIN32__
 395       // For some reason, under Win95, the text edit control has
 396       // a lot of space before the first character
 397       new_width += 3*cx;
 398 #endif
 399       // The height needs to be a bit bigger under Win95 if using native
 400       // 3D effects.
 401       valueHeight = (int) (valueHeight * 1.5) ;
 402       MoveWindow((HWND) m_staticValue, x_offset, y_offset, new_width, valueHeight, TRUE);
 403       x_offset += new_width + cx;
 404     }
 405
 406     MoveWindow((HWND) m_staticMin, x_offset, y_offset, (int)min_len, cy, TRUE);
 407     x_offset += (int)(min_len + cx);
 408
 409     int slider_length = (int)(w1 - x_offset - max_len - cx);
 410
 411     int slider_height = h1;
 412     if (slider_height < 0 )
 413         slider_height = 20;
 414
 415     // Slider must have a minimum/default length/height
 416     if (slider_length < 100)
 417       slider_length = 100;
 418
 419     MoveWindow(GetHwnd(), x_offset, y_offset, slider_length, slider_height, TRUE);
 420     x_offset += slider_length + cx;
 421
 422     MoveWindow((HWND) m_staticMax, x_offset, y_offset, (int)max_len, cy, TRUE);
 423     }
 424     else
 425     {
 426         // No labels
 427         // If we're prepared to use the existing size, then...
 428         if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO))
 429         {
 430             GetSize(&w1, &h1);
 431         }
 432         if ( w1 < 0 )
 433             w1 = 200;
 434         if ( h1 < 0 )
 435             h1 = 20;
 436         MoveWindow(GetHwnd(), x1, y1, w1, h1, TRUE);
 437     }
 438   }
 439   else
 440   {
 441     if ( m_windowStyle & wxSL_LABELS )
 442     {
 443     int min_len;
 444     GetWindowText((HWND) m_staticMin, buf, 300);
 445     GetTextExtent(buf, &min_len, &cyf,NULL,NULL, & this->GetFont());
 446
 447     int max_len;
 448     GetWindowText((HWND) m_staticMax, buf, 300);
 449     GetTextExtent(buf, &max_len, &cyf,NULL,NULL, & this->GetFont());
 450
 451     if (m_staticValue)
 452     {
 453       int new_width = (int)(wxMax(min_len, max_len));
 454       int valueHeight = (int)cyf;
 455 /*** Suggested change by George Tasker - remove this block...
 456 #ifdef __WIN32__
 457       // For some reason, under Win95, the text edit control has
 458       // a lot of space before the first character
 459       new_width += 3*cx;
 460 #endif
 461  ... and replace with following line: */
 462       new_width += cx;
 463
 464       // The height needs to be a bit bigger under Win95 if using native
 465       // 3D effects.
 466       valueHeight = (int) (valueHeight * 1.5) ;
 467
 468       MoveWindow((HWND) m_staticValue, x_offset, y_offset, new_width, valueHeight, TRUE);
 469       y_offset += valueHeight;
 470     }
 471
 472     MoveWindow((HWND) m_staticMin, x_offset, y_offset, (int)min_len, cy, TRUE);
 473     y_offset += cy;
 474
 475     int slider_length = (int)(h1 - y_offset - cy - cy);
 476
 477     int slider_width = w1;
 478     if (slider_width < 0 )
 479         slider_width = 20;
 480
 481     // Slider must have a minimum/default length
 482     if (slider_length < 100)
 483       slider_length = 100;
 484
 485     MoveWindow(GetHwnd(), x_offset, y_offset, slider_width, slider_length, TRUE);
 486     y_offset += slider_length;
 487
 488     MoveWindow((HWND) m_staticMax, x_offset, y_offset, (int)max_len, cy, TRUE);
 489     }
 490     else
 491     {
 492         // No labels
 493         // If we're prepared to use the existing size, then...
 494         if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO))
 495         {
 496             GetSize(&w1, &h1);
 497         }
 498         if ( w1 < 0 )
 499             w1 = 20;
 500         if ( h1 < 0 )
 501             h1 = 200;
 502         MoveWindow(GetHwnd(), x1, y1, w1, h1, TRUE);
 503     }
 504   }
 505 }
 506
 507 void wxSlider95::SetRange(int minValue, int maxValue)
 508 {
 509   m_rangeMin = minValue;
 510   m_rangeMax = maxValue;
 511
 512   ::SendMessage(GetHwnd(), TBM_SETRANGE, TRUE, MAKELONG(minValue, maxValue));
 513
 514   wxChar buf[40];
 515   if ( m_staticMin )
 516   {
 517       wxSprintf(buf, wxT("%d"), m_rangeMin);
 518       SetWindowText((HWND) m_staticMin, buf);
 519   }
 520
 521   if ( m_staticMax )
 522   {
 523     wxSprintf(buf, wxT("%d"), m_rangeMax);
 524     SetWindowText((HWND) m_staticMax, buf);
 525   }
 526 }
 527
 528 WXHBRUSH wxSlider95::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 529             WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 530 {
 531   if ( nCtlColor == CTLCOLOR_SCROLLBAR )
 532     return 0;
 533
 534   // Otherwise, it's a static
 535   return wxControl::OnCtlColor(pDC, pWnd, nCtlColor, message, wParam, lParam);
 536 }
 537
 538 // For trackbars only
 539 void wxSlider95::SetTickFreq(int n, int pos)
 540 {
 541   m_tickFreq = n;
 542   ::SendMessage( GetHwnd(), TBM_SETTICFREQ, (WPARAM) n, (LPARAM) pos );
 543 }
 544
 545 void wxSlider95::SetPageSize(int pageSize)
 546 {
 547   ::SendMessage( GetHwnd(), TBM_SETPAGESIZE, (WPARAM) 0, (LPARAM) pageSize );
 548   m_pageSize = pageSize;
 549 }
 550
 551 int wxSlider95::GetPageSize() const
 552 {
 553   return m_pageSize;
 554 }
 555
 556 void wxSlider95::ClearSel()
 557 {
 558   ::SendMessage( GetHwnd(), TBM_CLEARSEL, (WPARAM) TRUE, (LPARAM) 0 );
 559 }
 560
 561 void wxSlider95::ClearTicks()
 562 {
 563   ::SendMessage( GetHwnd(), TBM_CLEARTICS, (WPARAM) TRUE, (LPARAM) 0 );
 564 }
 565
 566 void wxSlider95::SetLineSize(int lineSize)
 567 {
 568   m_lineSize = lineSize;
 569   ::SendMessage( GetHwnd(), TBM_SETLINESIZE, (WPARAM) 0, (LPARAM) lineSize );
 570 }
 571
 572 int wxSlider95::GetLineSize() const
 573 {
 574   return (int) ::SendMessage( GetHwnd(), TBM_GETLINESIZE, (WPARAM) 0, (LPARAM) 0 );
 575 }
 576
 577 int wxSlider95::GetSelEnd() const
 578 {
 579   return (int) ::SendMessage( GetHwnd(), TBM_SETSELEND, (WPARAM) 0, (LPARAM) 0 );
 580 }
 581
 582 int wxSlider95::GetSelStart() const
 583 {
 584   return (int) ::SendMessage( GetHwnd(), TBM_GETSELSTART, (WPARAM) 0, (LPARAM) 0 );
 585 }
 586
 587 void wxSlider95::SetSelection(int minPos, int maxPos)
 588 {
 589   ::SendMessage( GetHwnd(), TBM_SETSEL, (WPARAM) TRUE, (LPARAM) MAKELONG( minPos, maxPos) );
 590 }
 591
 592 void wxSlider95::SetThumbLength(int len)
 593 {
 594   ::SendMessage( GetHwnd(), TBM_SETTHUMBLENGTH, (WPARAM) len, (LPARAM) 0 );
 595 }
 596
 597 int wxSlider95::GetThumbLength() const
 598 {
 599   return (int) ::SendMessage( GetHwnd(), TBM_GETTHUMBLENGTH, (WPARAM) 0, (LPARAM) 0 );
 600 }
 601
 602 void wxSlider95::SetTick(int tickPos)
 603 {
 604   ::SendMessage( GetHwnd(), TBM_SETTIC, (WPARAM) 0, (LPARAM) tickPos );
 605 }
 606
 607 bool wxSlider95::ContainsHWND(WXHWND hWnd) const
 608 {
 609     return ( hWnd == GetStaticMin() || hWnd == GetStaticMax() || hWnd == GetEditValue() );
 610 }
 611
 612 void wxSlider95::Command (wxCommandEvent & event)
 613 {
 614   SetValue (event.GetInt());
 615   ProcessCommand (event);
 616 }
 617
 618 bool wxSlider95::Show(bool show)
 619 {
 620     wxWindow::Show(show);
 621
 622     int cshow;
 623     if (show)
 624         cshow = SW_SHOW;
 625     else
 626         cshow = SW_HIDE;
 627
 628     if(m_staticValue)
 629         ShowWindow((HWND) m_staticValue, (BOOL)cshow);
 630     if(m_staticMin)
 631         ShowWindow((HWND) m_staticMin, (BOOL)cshow);
 632     if(m_staticMax)
 633         ShowWindow((HWND) m_staticMax, (BOOL)cshow);
 634     return TRUE;
 635 }
 636
 637 #endif
 638   // __WIN95__
 639