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 #if !USE_SHARED_LIBRARY
  39 IMPLEMENT_DYNAMIC_CLASS(wxSlider95, wxControl)
  40 #endif
  41
  42 // Slider
  43 wxSlider95::wxSlider95()
  44 {
  45   m_staticValue = 0;
  46   m_staticMin = 0;
  47   m_staticMax = 0;
  48   m_pageSize = 1;
  49   m_lineSize = 1;
  50   m_rangeMax = 0;
  51   m_rangeMin = 0;
  52   m_tickFreq = 0;
  53 }
  54
  55 bool wxSlider95::Create(wxWindow *parent, wxWindowID id,
  56            int value, int minValue, int maxValue,
  57            const wxPoint& pos,
  58            const wxSize& size, long style,
  59            const wxValidator& validator,
  60            const wxString& name)
  61 {
  62   SetName(name);
  63   SetValidator(validator);
  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.SetEventObject( this );
 264
 265     return GetEventHandler()->ProcessEvent( cevent );
 266 }
 267
 268 wxSlider95::~wxSlider95()
 269 {
 270     if (m_staticMin)
 271       DestroyWindow((HWND) m_staticMin);
 272     if (m_staticMax)
 273       DestroyWindow((HWND) m_staticMax);
 274     if (m_staticValue)
 275       DestroyWindow((HWND) m_staticValue);
 276 }
 277
 278 int wxSlider95::GetValue() const
 279 {
 280   return ::SendMessage(GetHwnd(), TBM_GETPOS, 0, 0);
 281 }
 282
 283 void wxSlider95::SetValue(int value)
 284 {
 285   ::SendMessage(GetHwnd(), TBM_SETPOS, (WPARAM)TRUE, (LPARAM)value);
 286   if (m_staticValue)
 287   {
 288     wxSprintf(wxBuffer, wxT("%d"), value);
 289     SetWindowText((HWND) m_staticValue, wxBuffer);
 290   }
 291 }
 292
 293 void wxSlider95::GetSize(int *width, int *height) const
 294 {
 295   RECT rect;
 296   rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 297
 298   wxFindMaxSize(GetHWND(), &rect);
 299
 300   if (m_staticMin)
 301     wxFindMaxSize(m_staticMin, &rect);
 302   if (m_staticMax)
 303     wxFindMaxSize(m_staticMax, &rect);
 304   if (m_staticValue)
 305     wxFindMaxSize(m_staticValue, &rect);
 306
 307   *width = rect.right - rect.left;
 308   *height = rect.bottom - rect.top;
 309 }
 310
 311 void wxSlider95::GetPosition(int *x, int *y) const
 312 {
 313   wxWindow *parent = GetParent();
 314   RECT rect;
 315   rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 316
 317   wxFindMaxSize(GetHWND(), &rect);
 318
 319   if (m_staticMin)
 320     wxFindMaxSize(m_staticMin, &rect);
 321   if (m_staticMax)
 322     wxFindMaxSize(m_staticMax, &rect);
 323   if (m_staticValue)
 324     wxFindMaxSize(m_staticValue, &rect);
 325
 326   // Since we now have the absolute screen coords,
 327   // if there's a parent we must subtract its top left corner
 328   POINT point;
 329   point.x = rect.left;
 330   point.y = rect.top;
 331   if (parent)
 332     ::ScreenToClient((HWND) parent->GetHWND(), &point);
 333
 334   // We may be faking the client origin.
 335   // So a window that's really at (0, 30) may appear
 336   // (to wxWin apps) to be at (0, 0).
 337   if (GetParent())
 338   {
 339     wxPoint pt(GetParent()->GetClientAreaOrigin());
 340     point.x -= pt.x;
 341     point.y -= pt.y;
 342   }
 343   *x = point.x;
 344   *y = point.y;
 345 }
 346
 347 // TODO one day, make sense of all this horros and replace it with a readable
 348 //      DoGetBestSize()
 349 void wxSlider95::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 350 {
 351   int x1 = x;
 352   int y1 = y;
 353   int w1 = width;
 354   int h1 = height;
 355
 356   int currentX, currentY;
 357   GetPosition(&currentX, &currentY);
 358   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 359     x1 = currentX;
 360   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 361     y1 = currentY;
 362
 363   AdjustForParentClientOrigin(x1, y1, sizeFlags);
 364
 365   wxChar buf[300];
 366
 367   int x_offset = x;
 368   int y_offset = y;
 369
 370   int cx;     // slider,min,max sizes
 371   int cy;
 372   int cyf;
 373
 374   wxGetCharSize(GetHWND(), &cx, &cy, & this->GetFont());
 375
 376   if ((m_windowStyle & wxSL_VERTICAL) != wxSL_VERTICAL)
 377   {
 378     if ( m_windowStyle & wxSL_LABELS )
 379     {
 380     int min_len = 0;
 381
 382     GetWindowText((HWND) m_staticMin, buf, 300);
 383     GetTextExtent(buf, &min_len, &cyf,NULL,NULL, & this->GetFont());
 384
 385     int max_len = 0;
 386
 387     GetWindowText((HWND) m_staticMax, buf, 300);
 388     GetTextExtent(buf, &max_len, &cyf,NULL,NULL, & this->GetFont());
 389     if (m_staticValue)
 390     {
 391       int new_width = (int)(wxMax(min_len, max_len));
 392       int valueHeight = (int)cyf;
 393 #ifdef __WIN32__
 394       // For some reason, under Win95, the text edit control has
 395       // a lot of space before the first character
 396       new_width += 3*cx;
 397 #endif
 398       // The height needs to be a bit bigger under Win95 if using native
 399       // 3D effects.
 400       valueHeight = (int) (valueHeight * 1.5) ;
 401       MoveWindow((HWND) m_staticValue, x_offset, y_offset, new_width, valueHeight, TRUE);
 402       x_offset += new_width + cx;
 403     }
 404
 405     MoveWindow((HWND) m_staticMin, x_offset, y_offset, (int)min_len, cy, TRUE);
 406     x_offset += (int)(min_len + cx);
 407
 408     int slider_length = (int)(w1 - x_offset - max_len - cx);
 409
 410     int slider_height = h1;
 411     if (slider_height < 0 )
 412         slider_height = 20;
 413
 414     // Slider must have a minimum/default length/height
 415     if (slider_length < 100)
 416       slider_length = 100;
 417
 418     MoveWindow(GetHwnd(), x_offset, y_offset, slider_length, slider_height, TRUE);
 419     x_offset += slider_length + cx;
 420
 421     MoveWindow((HWND) m_staticMax, x_offset, y_offset, (int)max_len, cy, TRUE);
 422     }
 423     else
 424     {
 425         // No labels
 426         // If we're prepared to use the existing size, then...
 427         if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO))
 428         {
 429             GetSize(&w1, &h1);
 430         }
 431         if ( w1 < 0 )
 432             w1 = 200;
 433         if ( h1 < 0 )
 434             h1 = 20;
 435         MoveWindow(GetHwnd(), x1, y1, w1, h1, TRUE);
 436     }
 437   }
 438   else
 439   {
 440     if ( m_windowStyle & wxSL_LABELS )
 441     {
 442     int min_len;
 443     GetWindowText((HWND) m_staticMin, buf, 300);
 444     GetTextExtent(buf, &min_len, &cyf,NULL,NULL, & this->GetFont());
 445
 446     int max_len;
 447     GetWindowText((HWND) m_staticMax, buf, 300);
 448     GetTextExtent(buf, &max_len, &cyf,NULL,NULL, & this->GetFont());
 449
 450     if (m_staticValue)
 451     {
 452       int new_width = (int)(wxMax(min_len, max_len));
 453       int valueHeight = (int)cyf;
 454 /*** Suggested change by George Tasker - remove this block...
 455 #ifdef __WIN32__
 456       // For some reason, under Win95, the text edit control has
 457       // a lot of space before the first character
 458       new_width += 3*cx;
 459 #endif
 460  ... and replace with following line: */
 461       new_width += cx;
 462
 463       // The height needs to be a bit bigger under Win95 if using native
 464       // 3D effects.
 465       valueHeight = (int) (valueHeight * 1.5) ;
 466
 467       MoveWindow((HWND) m_staticValue, x_offset, y_offset, new_width, valueHeight, TRUE);
 468       y_offset += valueHeight;
 469     }
 470
 471     MoveWindow((HWND) m_staticMin, x_offset, y_offset, (int)min_len, cy, TRUE);
 472     y_offset += cy;
 473
 474     int slider_length = (int)(h1 - y_offset - cy - cy);
 475
 476     int slider_width = w1;
 477     if (slider_width < 0 )
 478         slider_width = 20;
 479
 480     // Slider must have a minimum/default length
 481     if (slider_length < 100)
 482       slider_length = 100;
 483
 484     MoveWindow(GetHwnd(), x_offset, y_offset, slider_width, slider_length, TRUE);
 485     y_offset += slider_length;
 486
 487     MoveWindow((HWND) m_staticMax, x_offset, y_offset, (int)max_len, cy, TRUE);
 488     }
 489     else
 490     {
 491         // No labels
 492         // If we're prepared to use the existing size, then...
 493         if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO))
 494         {
 495             GetSize(&w1, &h1);
 496         }
 497         if ( w1 < 0 )
 498             w1 = 20;
 499         if ( h1 < 0 )
 500             h1 = 200;
 501         MoveWindow(GetHwnd(), x1, y1, w1, h1, TRUE);
 502     }
 503   }
 504 }
 505
 506 void wxSlider95::SetRange(int minValue, int maxValue)
 507 {
 508   m_rangeMin = minValue;
 509   m_rangeMax = maxValue;
 510
 511   ::SendMessage(GetHwnd(), TBM_SETRANGE, TRUE, MAKELONG(minValue, maxValue));
 512
 513   wxChar buf[40];
 514   if ( m_staticMin )
 515   {
 516       wxSprintf(buf, wxT("%d"), m_rangeMin);
 517       SetWindowText((HWND) m_staticMin, buf);
 518   }
 519
 520   if ( m_staticMax )
 521   {
 522     wxSprintf(buf, wxT("%d"), m_rangeMax);
 523     SetWindowText((HWND) m_staticMax, buf);
 524   }
 525 }
 526
 527 WXHBRUSH wxSlider95::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 528             WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 529 {
 530   if ( nCtlColor == CTLCOLOR_SCROLLBAR )
 531     return 0;
 532
 533   // Otherwise, it's a static
 534   return wxControl::OnCtlColor(pDC, pWnd, nCtlColor, message, wParam, lParam);
 535 }
 536
 537 // For trackbars only
 538 void wxSlider95::SetTickFreq(int n, int pos)
 539 {
 540   m_tickFreq = n;
 541   ::SendMessage( GetHwnd(), TBM_SETTICFREQ, (WPARAM) n, (LPARAM) pos );
 542 }
 543
 544 void wxSlider95::SetPageSize(int pageSize)
 545 {
 546   ::SendMessage( GetHwnd(), TBM_SETPAGESIZE, (WPARAM) 0, (LPARAM) pageSize );
 547   m_pageSize = pageSize;
 548 }
 549
 550 int wxSlider95::GetPageSize() const
 551 {
 552   return m_pageSize;
 553 }
 554
 555 void wxSlider95::ClearSel()
 556 {
 557   ::SendMessage( GetHwnd(), TBM_CLEARSEL, (WPARAM) TRUE, (LPARAM) 0 );
 558 }
 559
 560 void wxSlider95::ClearTicks()
 561 {
 562   ::SendMessage( GetHwnd(), TBM_CLEARTICS, (WPARAM) TRUE, (LPARAM) 0 );
 563 }
 564
 565 void wxSlider95::SetLineSize(int lineSize)
 566 {
 567   m_lineSize = lineSize;
 568   ::SendMessage( GetHwnd(), TBM_SETLINESIZE, (WPARAM) 0, (LPARAM) lineSize );
 569 }
 570
 571 int wxSlider95::GetLineSize() const
 572 {
 573   return (int) ::SendMessage( GetHwnd(), TBM_GETLINESIZE, (WPARAM) 0, (LPARAM) 0 );
 574 }
 575
 576 int wxSlider95::GetSelEnd() const
 577 {
 578   return (int) ::SendMessage( GetHwnd(), TBM_SETSELEND, (WPARAM) 0, (LPARAM) 0 );
 579 }
 580
 581 int wxSlider95::GetSelStart() const
 582 {
 583   return (int) ::SendMessage( GetHwnd(), TBM_GETSELSTART, (WPARAM) 0, (LPARAM) 0 );
 584 }
 585
 586 void wxSlider95::SetSelection(int minPos, int maxPos)
 587 {
 588   ::SendMessage( GetHwnd(), TBM_SETSEL, (WPARAM) TRUE, (LPARAM) MAKELONG( minPos, maxPos) );
 589 }
 590
 591 void wxSlider95::SetThumbLength(int len)
 592 {
 593   ::SendMessage( GetHwnd(), TBM_SETTHUMBLENGTH, (WPARAM) len, (LPARAM) 0 );
 594 }
 595
 596 int wxSlider95::GetThumbLength() const
 597 {
 598   return (int) ::SendMessage( GetHwnd(), TBM_GETTHUMBLENGTH, (WPARAM) 0, (LPARAM) 0 );
 599 }
 600
 601 void wxSlider95::SetTick(int tickPos)
 602 {
 603   ::SendMessage( GetHwnd(), TBM_SETTIC, (WPARAM) 0, (LPARAM) tickPos );
 604 }
 605
 606 bool wxSlider95::ContainsHWND(WXHWND hWnd) const
 607 {
 608     return ( hWnd == GetStaticMin() || hWnd == GetStaticMax() || hWnd == GetEditValue() );
 609 }
 610
 611 void wxSlider95::Command (wxCommandEvent & event)
 612 {
 613   SetValue (event.GetInt());
 614   ProcessCommand (event);
 615 }
 616
 617 bool wxSlider95::Show(bool show)
 618 {
 619     wxWindow::Show(show);
 620
 621     int cshow;
 622     if (show)
 623         cshow = SW_SHOW;
 624     else
 625         cshow = SW_HIDE;
 626
 627     if(m_staticValue)
 628         ShowWindow((HWND) m_staticValue, (BOOL)cshow);
 629     if(m_staticMin)
 630         ShowWindow((HWND) m_staticMin, (BOOL)cshow);
 631     if(m_staticMax)
 632         ShowWindow((HWND) m_staticMax, (BOOL)cshow);
 633     return TRUE;
 634 }
 635
 636 #endif
 637   // __WIN95__
 638