src/msw/slidrmsw.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        slidermsw.cpp
   3 // Purpose:     wxSliderMSW
   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 "slidrmsw.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 #endif
  26
  27 #include "wx/msw/slidrmsw.h"
  28 #include "wx/msw/private.h"
  29
  30 #if !USE_SHARED_LIBRARY
  31 IMPLEMENT_DYNAMIC_CLASS(wxSliderMSW, wxControl)
  32
  33 #if WXWIN_COMPATIBILITY
  34 BEGIN_EVENT_TABLE(wxSliderMSW, wxControl)
  35   EVT_SCROLL(wxSliderMSW::OnScroll)
  36 END_EVENT_TABLE()
  37 #endif
  38
  39 #endif
  40
  41 // Slider
  42 wxSliderMSW::wxSliderMSW(void)
  43 {
  44   m_staticValue = 0;
  45   m_staticMin = 0;
  46   m_staticMax = 0;
  47   m_pageSize = 1;
  48   m_lineSize = 1;
  49   m_rangeMax = 0;
  50   m_rangeMin = 0;
  51   m_tickFreq = 0;
  52 }
  53
  54 bool wxSliderMSW::Create(wxWindow *parent, wxWindowID id,
  55            int value, int minValue, int maxValue,
  56            const wxPoint& pos,
  57            const wxSize& size, long style,
  58            const wxValidator& validator,
  59            const wxString& name)
  60 {
  61   SetName(name);
  62   SetValidator(validator);
  63
  64   if (parent) parent->AddChild(this);
  65   SetBackgroundColour(parent->GetBackgroundColour()) ;
  66   SetForegroundColour(parent->GetForegroundColour()) ;
  67
  68   m_staticValue = 0;
  69   m_staticMin = 0;
  70   m_staticMax = 0;
  71   m_pageSize = 1;
  72   m_lineSize = 1;
  73   m_windowStyle = style;
  74   m_tickFreq = 0;
  75
  76   if ( id == -1 )
  77         m_windowId = (int)NewControlId();
  78   else
  79         m_windowId = id;
  80
  81   int x = pos.x;
  82   int y = pos.y;
  83   int width = size.x;
  84   int height = size.y;
  85
  86   // non-Win95 implementation
  87
  88   long msStyle = WS_CHILD | WS_VISIBLE | WS_BORDER | SS_CENTER;
  89
  90   bool want3D;
  91   WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ;
  92
  93   m_staticValue = (WXHWND) CreateWindowEx(exStyle, "STATIC", NULL,
  94                            msStyle,
  95                            0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)NewControlId(),
  96                            wxGetInstance(), NULL);
  97
  98   // Now create min static control
  99   sprintf(wxBuffer, "%d", minValue);
 100   m_staticMin = (WXHWND) CreateWindowEx(0, "STATIC", wxBuffer,
 101                          STATIC_FLAGS,
 102                          0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)NewControlId(),
 103                          wxGetInstance(), NULL);
 104
 105   // Now create slider
 106   m_windowId = (int)NewControlId();
 107
 108   msStyle = 0;
 109   if (m_windowStyle & wxSL_VERTICAL)
 110     msStyle = SBS_VERT | WS_CHILD | WS_VISIBLE | WS_TABSTOP ;
 111   else
 112     msStyle = SBS_HORZ | WS_CHILD | WS_VISIBLE | WS_TABSTOP ;
 113
 114   HWND scroll_bar = CreateWindowEx(MakeExtendedStyle(m_windowStyle), "SCROLLBAR", wxBuffer,
 115                          msStyle,
 116                          0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
 117                          wxGetInstance(), NULL);
 118
 119   m_pageSize = (int)((maxValue-minValue)/10);
 120   m_rangeMax = maxValue;
 121   m_rangeMin = minValue;
 122
 123   ::SetScrollRange(scroll_bar, SB_CTL, minValue, maxValue, FALSE);
 124   ::SetScrollPos(scroll_bar, SB_CTL, value, FALSE);
 125   ShowWindow(scroll_bar, SW_SHOW);
 126
 127   m_hWnd = (WXHWND)scroll_bar;
 128
 129   // Subclass again for purposes of dialog editing mode
 130   SubclassWin(GetHWND());
 131
 132   // Finally, create max value static item
 133   sprintf(wxBuffer, "%d", maxValue);
 134   m_staticMax = (WXHWND) CreateWindowEx(0, "STATIC", wxBuffer,
 135                          STATIC_FLAGS,
 136                          0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)NewControlId(),
 137                          wxGetInstance(), NULL);
 138
 139   SetFont(* parent->GetFont());
 140
 141   if (GetFont())
 142   {
 143 //    GetFont()->RealizeResource();
 144     if (GetFont()->GetResourceHandle())
 145     {
 146                 if ( m_staticMin )
 147                 SendMessage((HWND)m_staticMin,WM_SETFONT,
 148                         (WPARAM)GetFont()->GetResourceHandle(),0L);
 149                 if ( m_staticMax )
 150                 SendMessage((HWND)m_staticMax,WM_SETFONT,
 151                   (WPARAM)GetFont()->GetResourceHandle(),0L);
 152         if (m_staticValue)
 153                 SendMessage((HWND)m_staticValue,WM_SETFONT,
 154                     (WPARAM)GetFont()->GetResourceHandle(),0L);
 155     }
 156   }
 157
 158   SetSize(x, y, width, height);
 159   SetValue(value);
 160
 161   return TRUE;
 162 }
 163
 164 void wxSliderMSW::MSWOnVScroll(WXWORD wParam, WXWORD pos, WXHWND control)
 165 {
 166     int position = ::GetScrollPos((HWND)control, SB_CTL);
 167
 168     int nScrollInc;
 169     wxEventType scrollEvent = wxEVT_NULL;
 170     switch ( wParam )
 171     {
 172             case SB_TOP:
 173                     nScrollInc = m_rangeMax - position;
 174                     scrollEvent = wxEVT_SCROLL_TOP;
 175                     break;
 176
 177             case SB_BOTTOM:
 178                     nScrollInc = - position;
 179                     scrollEvent = wxEVT_SCROLL_BOTTOM;
 180                     break;
 181
 182             case SB_LINEUP:
 183                     nScrollInc = - GetLineSize();
 184                     scrollEvent = wxEVT_SCROLL_LINEUP;
 185                     break;
 186
 187             case SB_LINEDOWN:
 188                     nScrollInc = GetLineSize();
 189                     scrollEvent = wxEVT_SCROLL_LINEDOWN;
 190                     break;
 191
 192             case SB_PAGEUP:
 193                     nScrollInc = -GetPageSize();
 194                     scrollEvent = wxEVT_SCROLL_PAGEUP;
 195                     break;
 196
 197             case SB_PAGEDOWN:
 198                     nScrollInc = GetPageSize();
 199                     scrollEvent = wxEVT_SCROLL_PAGEDOWN;
 200                     break;
 201
 202             case SB_THUMBTRACK:
 203             case SB_THUMBPOSITION:
 204 #ifdef __WIN32__
 205                     nScrollInc = (signed short)pos - position;
 206 #else
 207                     nScrollInc = pos - position;
 208 #endif
 209                     scrollEvent = wxEVT_SCROLL_THUMBTRACK;
 210                     break;
 211
 212             default:
 213                     nScrollInc = 0;
 214                     return;
 215     }
 216
 217     if (nScrollInc != 0)
 218     {
 219
 220       int newPos = position + nScrollInc;
 221
 222       if (!(newPos < GetMin() || newPos > GetMax()))
 223       {
 224         SetValue(newPos);
 225
 226         wxScrollEvent event(scrollEvent, m_windowId);
 227         event.SetPosition(newPos);
 228         event.SetEventObject( this );
 229         GetEventHandler()->ProcessEvent(event);
 230       }
 231     }
 232 }
 233
 234 void wxSliderMSW::MSWOnHScroll(WXWORD wParam, WXWORD pos, WXHWND control)
 235 {
 236         MSWOnVScroll(wParam, pos, control);
 237 }
 238
 239 wxSliderMSW::~wxSliderMSW(void)
 240 {
 241     if (m_staticMin)
 242       DestroyWindow((HWND) m_staticMin);
 243     if (m_staticMax)
 244       DestroyWindow((HWND) m_staticMax);
 245     if (m_staticValue)
 246       DestroyWindow((HWND) m_staticValue);
 247 }
 248
 249 int wxSliderMSW::GetValue(void) const
 250 {
 251   return ::GetScrollPos((HWND) GetHWND(), SB_CTL);
 252 }
 253
 254 void wxSliderMSW::SetValue(int value)
 255 {
 256   ::SetScrollPos((HWND) GetHWND(), SB_CTL, value, TRUE);
 257   if (m_staticValue)
 258   {
 259     sprintf(wxBuffer, "%d", value);
 260     SetWindowText((HWND) m_staticValue, wxBuffer);
 261   }
 262 }
 263
 264 void wxSliderMSW::GetSize(int *width, int *height) const
 265 {
 266   RECT rect;
 267   rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 268
 269   wxFindMaxSize(GetHWND(), &rect);
 270
 271   if (m_staticMin)
 272     wxFindMaxSize(m_staticMin, &rect);
 273   if (m_staticMax)
 274     wxFindMaxSize(m_staticMax, &rect);
 275   if (m_staticValue)
 276     wxFindMaxSize(m_staticValue, &rect);
 277
 278   *width = rect.right - rect.left;
 279   *height = rect.bottom - rect.top;
 280 }
 281
 282 void wxSliderMSW::GetPosition(int *x, int *y) const
 283 {
 284   wxWindow *parent = GetParent();
 285   RECT rect;
 286   rect.left = -1; rect.right = -1; rect.top = -1; rect.bottom = -1;
 287
 288   wxFindMaxSize(GetHWND(), &rect);
 289
 290   if (m_staticMin)
 291     wxFindMaxSize(m_staticMin, &rect);
 292   if (m_staticMax)
 293     wxFindMaxSize(m_staticMax, &rect);
 294   if (m_staticValue)
 295     wxFindMaxSize(m_staticValue, &rect);
 296
 297   // Since we now have the absolute screen coords,
 298   // if there's a parent we must subtract its top left corner
 299   POINT point;
 300   point.x = rect.left;
 301   point.y = rect.top;
 302   if (parent)
 303     ::ScreenToClient((HWND) parent->GetHWND(), &point);
 304
 305   // We may be faking the client origin.
 306   // So a window that's really at (0, 30) may appear
 307   // (to wxWin apps) to be at (0, 0).
 308   if (GetParent())
 309   {
 310     wxPoint pt(GetParent()->GetClientAreaOrigin());
 311     point.x -= pt.x;
 312     point.y -= pt.y;
 313   }
 314   *x = point.x;
 315   *y = point.y;
 316 }
 317
 318 void wxSliderMSW::SetSize(int x, int y, int width, int height, int sizeFlags)
 319 {
 320   int x1 = x;
 321   int y1 = y;
 322   int w1 = width;
 323   int h1 = height;
 324
 325   int currentX, currentY;
 326   GetPosition(&currentX, &currentY);
 327   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 328     x1 = currentX;
 329   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 330     y1 = currentY;
 331
 332   AdjustForParentClientOrigin(x1, y1, sizeFlags);
 333
 334   char buf[300];
 335
 336   int x_offset = x;
 337   int y_offset = y;
 338
 339   int cx;     // slider,min,max sizes
 340   int cy;
 341   int cyf;
 342
 343   wxGetCharSize(GetHWND(), &cx, &cy,GetFont());
 344
 345   if ((m_windowStyle & wxSL_VERTICAL) != wxSL_VERTICAL)
 346   {
 347         if ( m_windowStyle & wxSL_LABELS )
 348         {
 349     int min_len = 0;
 350
 351     GetWindowText((HWND) m_staticMin, buf, 300);
 352     GetTextExtent(buf, &min_len, &cyf,NULL,NULL, GetFont());
 353
 354     int max_len = 0;
 355
 356     GetWindowText((HWND) m_staticMax, buf, 300);
 357     GetTextExtent(buf, &max_len, &cyf,NULL,NULL, GetFont());
 358     if (m_staticValue)
 359     {
 360       int new_width = (int)(wxMax(min_len, max_len));
 361           int valueHeight = (int)cyf;
 362 #ifdef __WIN32__
 363       // For some reason, under Win95, the text edit control has
 364       // a lot of space before the first character
 365       new_width += 3*cx;
 366 #endif
 367       MoveWindow((HWND) m_staticValue, x_offset, y_offset, new_width, valueHeight, TRUE);
 368       x_offset += new_width + cx;
 369     }
 370
 371     MoveWindow((HWND) m_staticMin, x_offset, y_offset, (int)min_len, cy, TRUE);
 372     x_offset += (int)(min_len + cx);
 373
 374     int slider_length = (int)(w1 - x_offset - max_len - cx);
 375
 376     int slider_height = cy;
 377
 378     // Slider must have a minimum/default length/height
 379     if (slider_length < 100)
 380       slider_length = 100;
 381
 382     MoveWindow((HWND) GetHWND(), x_offset, y_offset, slider_length, slider_height, TRUE);
 383     x_offset += slider_length + cx;
 384
 385     MoveWindow((HWND) m_staticMax, x_offset, y_offset, (int)max_len, cy, TRUE);
 386     }
 387         else
 388         {
 389                 // No labels
 390                 if ( w1 < 0 )
 391                         w1 = 200;
 392                 if ( h1 < 0 )
 393                         h1 = 20;
 394         MoveWindow((HWND) GetHWND(), x1, y1, w1, h1, TRUE);
 395         }
 396   }
 397   else
 398   {
 399         if ( m_windowStyle & wxSL_LABELS )
 400         {
 401     int min_len;
 402     GetWindowText((HWND) m_staticMin, buf, 300);
 403     GetTextExtent(buf, &min_len, &cyf,NULL,NULL,GetFont());
 404
 405     int max_len;
 406     GetWindowText((HWND) m_staticMax, buf, 300);
 407     GetTextExtent(buf, &max_len, &cyf,NULL,NULL, GetFont());
 408
 409     if (m_staticValue)
 410     {
 411       int new_width = (int)(wxMax(min_len, max_len));
 412           int valueHeight = (int)cyf;
 413 /*** Suggested change by George Tasker - remove this block...
 414 #ifdef __WIN32__
 415       // For some reason, under Win95, the text edit control has
 416       // a lot of space before the first character
 417       new_width += 3*cx;
 418 #endif
 419  ... and replace with following line: */
 420       new_width += cx;
 421
 422       MoveWindow((HWND) m_staticValue, x_offset, y_offset, new_width, valueHeight, TRUE);
 423       y_offset += valueHeight;
 424     }
 425
 426     MoveWindow((HWND) m_staticMin, x_offset, y_offset, (int)min_len, cy, TRUE);
 427     y_offset += cy;
 428
 429     int slider_length = (int)(h1 - y_offset - cy - cy);
 430
 431     // Use character height as an estimate of slider width (yes, width)
 432     int slider_width = cy;
 433
 434     // Slider must have a minimum/default length
 435     if (slider_length < 100)
 436       slider_length = 100;
 437
 438     MoveWindow((HWND) GetHWND(), x_offset, y_offset, slider_width, slider_length, TRUE);
 439     y_offset += slider_length;
 440
 441     MoveWindow((HWND) m_staticMax, x_offset, y_offset, (int)max_len, cy, TRUE);
 442     }
 443         else
 444         {
 445                 // No labels
 446                 if ( w1 < 0 )
 447                         w1 = 20;
 448                 if ( h1 < 0 )
 449                         h1 = 200;
 450         MoveWindow((HWND) GetHWND(), x1, y1, w1, h1, TRUE);
 451         }
 452   }
 453 }
 454
 455 void wxSliderMSW::SetRange(int minValue, int maxValue)
 456 {
 457   m_rangeMin = minValue;
 458   m_rangeMax = maxValue;
 459
 460   ::SetScrollRange((HWND) GetHWND(), SB_CTL, m_rangeMin, m_rangeMax, TRUE);
 461   char buf[40];
 462   if ( m_staticMin )
 463   {
 464         sprintf(buf, "%d", m_rangeMin);
 465         SetWindowText((HWND) m_staticMin, buf);
 466   }
 467
 468   if ( m_staticMax )
 469   {
 470     sprintf(buf, "%d", m_rangeMax);
 471     SetWindowText((HWND) m_staticMax, buf);
 472   }
 473 }
 474
 475 WXHBRUSH wxSliderMSW::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 476                         WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 477 {
 478   if ( nCtlColor == CTLCOLOR_SCROLLBAR )
 479         return 0;
 480
 481   // Otherwise, it's a static
 482   if (GetParent()->GetTransparentBackground())
 483     SetBkMode((HDC) pDC, TRANSPARENT);
 484   else
 485     SetBkMode((HDC) pDC, OPAQUE);
 486
 487   ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 488   ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 489
 490   wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 491
 492   return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 493 }
 494
 495 // For trackbars only
 496 void wxSliderMSW::SetTickFreq(int n, int pos)
 497 {
 498 }
 499
 500 void wxSliderMSW::SetPageSize(int pageSize)
 501 {
 502   m_pageSize = pageSize;
 503 }
 504
 505 int wxSliderMSW::GetPageSize(void) const
 506 {
 507   return m_pageSize;
 508 }
 509
 510 void wxSliderMSW::ClearSel(void)
 511 {
 512 }
 513
 514 void wxSliderMSW::ClearTicks(void)
 515 {
 516 }
 517
 518 void wxSliderMSW::SetLineSize(int lineSize)
 519 {
 520   m_lineSize = lineSize;
 521 }
 522
 523 int wxSliderMSW::GetLineSize(void) const
 524 {
 525   return m_lineSize;
 526 }
 527
 528 int wxSliderMSW::GetSelEnd(void) const
 529 {
 530   return 0;
 531 }
 532
 533 int wxSliderMSW::GetSelStart(void) const
 534 {
 535   return 0;
 536 }
 537
 538 void wxSliderMSW::SetSelection(int minPos, int maxPos)
 539 {
 540 }
 541
 542 void wxSliderMSW::SetThumbLength(int len)
 543 {
 544 }
 545
 546 int wxSliderMSW::GetThumbLength(void) const
 547 {
 548   return 0;
 549 }
 550
 551 void wxSliderMSW::SetTick(int tickPos)
 552 {
 553 }
 554
 555 bool wxSliderMSW::ContainsHWND(WXHWND hWnd) const
 556 {
 557         return ( hWnd == GetStaticMin() || hWnd == GetStaticMax() || hWnd == GetEditValue() );
 558 }
 559
 560 #if WXWIN_COMPATIBILITY
 561 // Backward compatibility
 562 void wxSliderMSW::OnScroll(wxScrollEvent& event)
 563 {
 564     wxEventType oldEvent = event.GetEventType();
 565     event.SetEventType( wxEVT_COMMAND_SLIDER_UPDATED );
 566     if ( !GetEventHandler()->ProcessEvent(event) )
 567     {
 568         event.SetEventType( oldEvent );
 569         if (!GetParent()->GetEventHandler()->ProcessEvent(event))
 570             event.Skip();
 571     }
 572 }
 573 #endif
 574
 575 void wxSliderMSW::Command (wxCommandEvent & event)
 576 {
 577   SetValue (event.GetInt());
 578   ProcessCommand (event);
 579 }
 580
 581 bool wxSliderMSW::Show(bool show)
 582 {
 583         wxWindow::Show(show);
 584
 585     int cshow;
 586     if (show)
 587         cshow = SW_SHOW;
 588     else
 589         cshow = SW_HIDE;
 590
 591     if(m_staticValue)
 592                 ShowWindow((HWND) m_staticValue, (BOOL)cshow);
 593     if(m_staticMin)
 594             ShowWindow((HWND) m_staticMin, (BOOL)cshow);
 595     if(m_staticMax)
 596                 ShowWindow((HWND) m_staticMax, (BOOL)cshow);
 597     return TRUE;
 598 }
 599
 600