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