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, const wxWindowID id,
  55            const int value, const int minValue, const int maxValue,
  56            const wxPoint& pos,
  57            const wxSize& size, const 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->GetDefaultBackgroundColour()) ;
  66   SetForegroundColour(parent->GetDefaultForegroundColour()) ;
  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(const WXWORD wParam, const WXWORD pos, const 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(const WXWORD wParam, const WXWORD pos, const 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(const 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   *x = point.x;
 306   *y = point.y;
 307 }
 308
 309 void wxSliderMSW::SetSize(const int x, const int y, const int width, const int height, const int sizeFlags)
 310 {
 311   int x1 = x;
 312   int y1 = y;
 313   int w1 = width;
 314   int h1 = height;
 315
 316   int currentX, currentY;
 317   GetPosition(&currentX, &currentY);
 318   if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 319     x1 = currentX;
 320   if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 321     y1 = currentY;
 322
 323   char buf[300];
 324
 325   int x_offset = x;
 326   int y_offset = y;
 327
 328   int cx;     // slider,min,max sizes
 329   int cy;
 330   float cyf;
 331
 332   wxGetCharSize(GetHWND(), &cx, &cy,GetFont());
 333
 334   if ((m_windowStyle & wxSL_VERTICAL) != wxSL_VERTICAL)
 335   {
 336         if ( m_windowStyle & wxSL_LABELS )
 337         {
 338     float min_len = 0.0;
 339
 340     GetWindowText((HWND) m_staticMin, buf, 300);
 341     GetTextExtent(buf, &min_len, &cyf,NULL,NULL, GetFont());
 342
 343     float max_len = 0.0;
 344
 345     GetWindowText((HWND) m_staticMax, buf, 300);
 346     GetTextExtent(buf, &max_len, &cyf,NULL,NULL, GetFont());
 347     if (m_staticValue)
 348     {
 349       int new_width = (int)(wxMax(min_len, max_len));
 350           int valueHeight = (int)cyf;
 351 #ifdef __WIN32__
 352       // For some reason, under Win95, the text edit control has
 353       // a lot of space before the first character
 354       new_width += 3*cx;
 355 #endif
 356       MoveWindow((HWND) m_staticValue, x_offset, y_offset, new_width, valueHeight, TRUE);
 357       x_offset += new_width + cx;
 358     }
 359
 360     MoveWindow((HWND) m_staticMin, x_offset, y_offset, (int)min_len, cy, TRUE);
 361     x_offset += (int)(min_len + cx);
 362
 363     int slider_length = (int)(w1 - x_offset - max_len - cx);
 364
 365     int slider_height = cy;
 366
 367     // Slider must have a minimum/default length/height
 368     if (slider_length < 100)
 369       slider_length = 100;
 370
 371     MoveWindow((HWND) GetHWND(), x_offset, y_offset, slider_length, slider_height, TRUE);
 372     x_offset += slider_length + cx;
 373
 374     MoveWindow((HWND) m_staticMax, x_offset, y_offset, (int)max_len, cy, TRUE);
 375     }
 376         else
 377         {
 378                 // No labels
 379                 if ( w1 < 0 )
 380                         w1 = 200;
 381                 if ( h1 < 0 )
 382                         h1 = 20;
 383         MoveWindow((HWND) GetHWND(), x1, y1, w1, h1, TRUE);
 384         }
 385   }
 386   else
 387   {
 388         if ( m_windowStyle & wxSL_LABELS )
 389         {
 390     float min_len;
 391     GetWindowText((HWND) m_staticMin, buf, 300);
 392     GetTextExtent(buf, &min_len, &cyf,NULL,NULL,GetFont());
 393
 394     float max_len;
 395     GetWindowText((HWND) m_staticMax, buf, 300);
 396     GetTextExtent(buf, &max_len, &cyf,NULL,NULL, GetFont());
 397
 398     if (m_staticValue)
 399     {
 400       int new_width = (int)(wxMax(min_len, max_len));
 401           int valueHeight = (int)cyf;
 402 /*** Suggested change by George Tasker - remove this block...
 403 #ifdef __WIN32__
 404       // For some reason, under Win95, the text edit control has
 405       // a lot of space before the first character
 406       new_width += 3*cx;
 407 #endif
 408  ... and replace with following line: */
 409       new_width += cx;
 410
 411       MoveWindow((HWND) m_staticValue, x_offset, y_offset, new_width, valueHeight, TRUE);
 412       y_offset += valueHeight;
 413     }
 414
 415     MoveWindow((HWND) m_staticMin, x_offset, y_offset, (int)min_len, cy, TRUE);
 416     y_offset += cy;
 417
 418     int slider_length = (int)(h1 - y_offset - cy - cy);
 419
 420     // Use character height as an estimate of slider width (yes, width)
 421     int slider_width = cy;
 422
 423     // Slider must have a minimum/default length
 424     if (slider_length < 100)
 425       slider_length = 100;
 426
 427     MoveWindow((HWND) GetHWND(), x_offset, y_offset, slider_width, slider_length, TRUE);
 428     y_offset += slider_length;
 429
 430     MoveWindow((HWND) m_staticMax, x_offset, y_offset, (int)max_len, cy, TRUE);
 431     }
 432         else
 433         {
 434                 // No labels
 435                 if ( w1 < 0 )
 436                         w1 = 20;
 437                 if ( h1 < 0 )
 438                         h1 = 200;
 439         MoveWindow((HWND) GetHWND(), x1, y1, w1, h1, TRUE);
 440         }
 441   }
 442 }
 443
 444 void wxSliderMSW::SetRange(const int minValue, const int maxValue)
 445 {
 446   m_rangeMin = minValue;
 447   m_rangeMax = maxValue;
 448
 449   ::SetScrollRange((HWND) GetHWND(), SB_CTL, m_rangeMin, m_rangeMax, TRUE);
 450   char buf[40];
 451   if ( m_staticMin )
 452   {
 453         sprintf(buf, "%d", m_rangeMin);
 454         SetWindowText((HWND) m_staticMin, buf);
 455   }
 456
 457   if ( m_staticMax )
 458   {
 459     sprintf(buf, "%d", m_rangeMax);
 460     SetWindowText((HWND) m_staticMax, buf);
 461   }
 462 }
 463
 464 WXHBRUSH wxSliderMSW::OnCtlColor(const WXHDC pDC, const WXHWND pWnd, const WXUINT nCtlColor,
 465                         WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 466 {
 467   if ( nCtlColor == CTLCOLOR_SCROLLBAR )
 468         return 0;
 469
 470   // Otherwise, it's a static
 471   if (GetParent()->GetTransparentBackground())
 472     SetBkMode((HDC) pDC, TRANSPARENT);
 473   else
 474     SetBkMode((HDC) pDC, OPAQUE);
 475
 476   ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
 477   ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
 478
 479   wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
 480
 481   return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 482 }
 483
 484 // For trackbars only
 485 void wxSliderMSW::SetTickFreq(const int n, const int pos)
 486 {
 487 }
 488
 489 void wxSliderMSW::SetPageSize(const int pageSize)
 490 {
 491   m_pageSize = pageSize;
 492 }
 493
 494 int wxSliderMSW::GetPageSize(void) const
 495 {
 496   return m_pageSize;
 497 }
 498
 499 void wxSliderMSW::ClearSel(void)
 500 {
 501 }
 502
 503 void wxSliderMSW::ClearTicks(void)
 504 {
 505 }
 506
 507 void wxSliderMSW::SetLineSize(const int lineSize)
 508 {
 509   m_lineSize = lineSize;
 510 }
 511
 512 int wxSliderMSW::GetLineSize(void) const
 513 {
 514   return m_lineSize;
 515 }
 516
 517 int wxSliderMSW::GetSelEnd(void) const
 518 {
 519   return 0;
 520 }
 521
 522 int wxSliderMSW::GetSelStart(void) const
 523 {
 524   return 0;
 525 }
 526
 527 void wxSliderMSW::SetSelection(const int minPos, const int maxPos)
 528 {
 529 }
 530
 531 void wxSliderMSW::SetThumbLength(const int len)
 532 {
 533 }
 534
 535 int wxSliderMSW::GetThumbLength(void) const
 536 {
 537   return 0;
 538 }
 539
 540 void wxSliderMSW::SetTick(const int tickPos)
 541 {
 542 }
 543
 544 bool wxSliderMSW::ContainsHWND(WXHWND hWnd) const
 545 {
 546         return ( hWnd == GetStaticMin() || hWnd == GetStaticMax() || hWnd == GetEditValue() );
 547 }
 548
 549 #if WXWIN_COMPATIBILITY
 550 // Backward compatibility
 551 void wxSliderMSW::OnScroll(wxScrollEvent& event)
 552 {
 553     wxEventType oldEvent = event.GetEventType();
 554     event.SetEventType( wxEVT_COMMAND_SLIDER_UPDATED );
 555     if ( !GetEventHandler()->ProcessEvent(event) )
 556     {
 557         event.SetEventType( oldEvent );
 558         if (!GetParent()->GetEventHandler()->ProcessEvent(event))
 559             event.Skip();
 560     }
 561 }
 562 #endif
 563
 564 void wxSliderMSW::Command (wxCommandEvent & event)
 565 {
 566   SetValue (event.GetInt());
 567   ProcessCommand (event);
 568 }
 569
 570 bool wxSliderMSW::Show(const bool show)
 571 {
 572         wxWindow::Show(show);
 573
 574     int cshow;
 575     if (show)
 576         cshow = SW_SHOW;
 577     else
 578         cshow = SW_HIDE;
 579
 580     if(m_staticValue)
 581                 ShowWindow((HWND) m_staticValue, (BOOL)cshow);
 582     if(m_staticMin)
 583             ShowWindow((HWND) m_staticMin, (BOOL)cshow);
 584     if(m_staticMax)
 585                 ShowWindow((HWND) m_staticMax, (BOOL)cshow);
 586     return TRUE;
 587 }
 588
 589