src/univ/renderer.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        univ/renderer.cpp
   3 // Purpose:     wxControlRenderer implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     15.08.00
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "renderer.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/app.h"
  33     #include "wx/control.h"
  34     #include "wx/checklst.h"
  35     #include "wx/listbox.h"
  36     #include "wx/scrolbar.h"
  37     #include "wx/dc.h"
  38 #endif // WX_PRECOMP
  39
  40 #include "wx/image.h"
  41
  42 #include "wx/univ/theme.h"
  43 #include "wx/univ/renderer.h"
  44 #include "wx/univ/colschem.h"
  45
  46 #if wxUSE_GAUGE
  47 #include "wx/gauge.h"
  48 #endif
  49
  50 // ============================================================================
  51 // implementation
  52 // ============================================================================
  53
  54 // ----------------------------------------------------------------------------
  55 // wxRenderer: drawing helpers
  56 // ----------------------------------------------------------------------------
  57
  58 void wxRenderer::StandardDrawFrame(wxDC& dc,
  59                                    const wxRect& rectFrame,
  60                                    const wxRect& rectLabel)
  61 {
  62     // draw left, bottom and right lines entirely
  63     DrawVerticalLine(dc, rectFrame.GetLeft(),
  64                      rectFrame.GetTop(), rectFrame.GetBottom() - 2);
  65     DrawHorizontalLine(dc, rectFrame.GetBottom() - 1,
  66                        rectFrame.GetLeft(), rectFrame.GetRight());
  67     DrawVerticalLine(dc, rectFrame.GetRight() - 1,
  68                      rectFrame.GetTop(), rectFrame.GetBottom() - 1);
  69
  70     // and 2 parts of the top line
  71     DrawHorizontalLine(dc, rectFrame.GetTop(),
  72                        rectFrame.GetLeft() + 1, rectLabel.GetLeft());
  73     DrawHorizontalLine(dc, rectFrame.GetTop(),
  74                        rectLabel.GetRight(), rectFrame.GetRight() - 2);
  75 }
  76
  77 /* static */
  78 void wxRenderer::StandardDrawTextLine(wxDC& dc,
  79                                       const wxString& text,
  80                                       const wxRect& rect,
  81                                       int selStart, int selEnd,
  82                                       int flags)
  83 {
  84     if ( (selStart == -1) || !(flags & wxCONTROL_FOCUSED) )
  85     {
  86         // just draw it as is
  87         dc.DrawText(text, rect.x, rect.y);
  88     }
  89     else // we have selection
  90     {
  91         wxCoord width,
  92                 x = rect.x;
  93
  94         // draw the part before selection
  95         wxString s(text, (size_t)selStart);
  96         if ( !s.empty() )
  97         {
  98             dc.DrawText(s, x, rect.y);
  99
 100             dc.GetTextExtent(s, &width, NULL);
 101             x += width;
 102         }
 103
 104         // draw the selection itself
 105         s = wxString(text.c_str() + selStart, text.c_str() + selEnd);
 106         if ( !s.empty() )
 107         {
 108             wxColour colFg = dc.GetTextForeground(),
 109                      colBg = dc.GetTextBackground();
 110             dc.SetTextForeground(wxTHEME_COLOUR(HIGHLIGHT_TEXT));
 111             dc.SetTextBackground(wxTHEME_COLOUR(HIGHLIGHT));
 112             dc.SetBackgroundMode(wxSOLID);
 113
 114             dc.DrawText(s, x, rect.y);
 115             dc.GetTextExtent(s, &width, NULL);
 116             x += width;
 117
 118             dc.SetBackgroundMode(wxTRANSPARENT);
 119             dc.SetTextBackground(colBg);
 120             dc.SetTextForeground(colFg);
 121         }
 122
 123         // draw the final part
 124         s = text.c_str() + selEnd;
 125         if ( !s.empty() )
 126         {
 127             dc.DrawText(s, x, rect.y);
 128         }
 129     }
 130 }
 131
 132 // ----------------------------------------------------------------------------
 133 // wxRenderer: scrollbar geometry
 134 // ----------------------------------------------------------------------------
 135
 136 /* static */
 137 void wxRenderer::StandardScrollBarThumbSize(wxCoord length,
 138                                             int thumbPos,
 139                                             int thumbSize,
 140                                             int range,
 141                                             wxCoord *thumbStart,
 142                                             wxCoord *thumbEnd)
 143 {
 144     // the thumb can't be made less than this number of pixels
 145     static const wxCoord thumbMinWidth = 8; // FIXME: should be configurable
 146
 147     *thumbStart = (length*thumbPos) / range;
 148     *thumbEnd = (length*(thumbPos + thumbSize)) / range;
 149
 150     if ( *thumbEnd - *thumbStart < thumbMinWidth )
 151     {
 152         // adjust the end if possible
 153         if ( *thumbStart <= length - thumbMinWidth )
 154         {
 155             // yes, just make it wider
 156             *thumbEnd = *thumbStart + thumbMinWidth;
 157         }
 158         else // it is at the bottom of the scrollbar
 159         {
 160             // so move it a bit up
 161             *thumbStart = length - thumbMinWidth;
 162             *thumbEnd = length;
 163         }
 164     }
 165 }
 166
 167 /* static */
 168 wxRect wxRenderer::StandardGetScrollbarRect(const wxScrollBar *scrollbar,
 169                                             wxScrollBar::Element elem,
 170                                             int thumbPos,
 171                                             const wxSize& sizeArrow)
 172 {
 173     if ( thumbPos == -1 )
 174     {
 175         thumbPos = scrollbar->GetThumbPosition();
 176     }
 177
 178     wxSize sizeTotal = scrollbar->GetClientSize();
 179     wxCoord *start, *width, length, arrow;
 180     wxRect rect;
 181     if ( scrollbar->IsVertical() )
 182     {
 183         rect.x = 0;
 184         rect.width = sizeTotal.x;
 185         length = sizeTotal.y;
 186         start = &rect.y;
 187         width = &rect.height;
 188         arrow = sizeArrow.y;
 189     }
 190     else // horizontal
 191     {
 192         rect.y = 0;
 193         rect.height = sizeTotal.y;
 194         length = sizeTotal.x;
 195         start = &rect.x;
 196         width = &rect.width;
 197         arrow = sizeArrow.x;
 198     }
 199
 200     switch ( elem )
 201     {
 202         case wxScrollBar::Element_Arrow_Line_1:
 203             *start = 0;
 204             *width = arrow;
 205             break;
 206
 207         case wxScrollBar::Element_Arrow_Line_2:
 208             *start = length - arrow;
 209             *width = arrow;
 210             break;
 211
 212         case wxScrollBar::Element_Arrow_Page_1:
 213         case wxScrollBar::Element_Arrow_Page_2:
 214             // we don't have them at all
 215             break;
 216
 217         case wxScrollBar::Element_Thumb:
 218         case wxScrollBar::Element_Bar_1:
 219         case wxScrollBar::Element_Bar_2:
 220             // we need to calculate the thumb position - do it
 221             {
 222                 length -= 2*arrow;
 223                 wxCoord thumbStart, thumbEnd;
 224                 int range = scrollbar->GetRange();
 225                 if ( !range )
 226                 {
 227                     thumbStart =
 228                     thumbEnd = 0;
 229                 }
 230                 else
 231                 {
 232                     StandardScrollBarThumbSize(length,
 233                                                thumbPos,
 234                                                scrollbar->GetThumbSize(),
 235                                                range,
 236                                                &thumbStart,
 237                                                &thumbEnd);
 238                 }
 239
 240                 if ( elem == wxScrollBar::Element_Thumb )
 241                 {
 242                     *start = thumbStart;
 243                     *width = thumbEnd - thumbStart;
 244                 }
 245                 else if ( elem == wxScrollBar::Element_Bar_1 )
 246                 {
 247                     *start = 0;
 248                     *width = thumbStart;
 249                 }
 250                 else // elem == wxScrollBar::Element_Bar_2
 251                 {
 252                     *start = thumbEnd;
 253                     *width = length - thumbEnd;
 254                 }
 255
 256                 // everything is relative to the start of the shaft so far
 257                 *start += arrow;
 258             }
 259             break;
 260
 261         case wxScrollBar::Element_Max:
 262         default:
 263             wxFAIL_MSG( _T("unknown scrollbar element") );
 264     }
 265
 266     return rect;
 267 }
 268
 269 /* static */
 270 wxCoord wxRenderer::StandardScrollBarSize(const wxScrollBar *scrollbar,
 271                                           const wxSize& sizeArrowSB)
 272 {
 273     wxCoord sizeArrow, sizeTotal;
 274     if ( scrollbar->GetWindowStyle() & wxVERTICAL )
 275     {
 276         sizeArrow = sizeArrowSB.y;
 277         sizeTotal = scrollbar->GetSize().y;
 278     }
 279     else // horizontal
 280     {
 281         sizeArrow = sizeArrowSB.x;
 282         sizeTotal = scrollbar->GetSize().x;
 283     }
 284
 285     return sizeTotal - 2*sizeArrow;
 286 }
 287
 288 /* static */
 289 wxCoord wxRenderer::StandardScrollbarToPixel(const wxScrollBar *scrollbar,
 290                                              int thumbPos,
 291                                              const wxSize& sizeArrow)
 292 {
 293     int range = scrollbar->GetRange();
 294     if ( !range )
 295     {
 296         // the only valid position anyhow
 297         return 0;
 298     }
 299
 300     if ( thumbPos == -1 )
 301     {
 302         // by default use the current thumb position
 303         thumbPos = scrollbar->GetThumbPosition();
 304     }
 305
 306     return ( thumbPos*StandardScrollBarSize(scrollbar, sizeArrow) ) / range
 307              + (scrollbar->IsVertical() ? sizeArrow.y : sizeArrow.x);
 308 }
 309
 310 /* static */
 311 int wxRenderer::StandardPixelToScrollbar(const wxScrollBar *scrollbar,
 312                                          wxCoord coord,
 313                                          const wxSize& sizeArrow)
 314 {
 315     return ( (coord - (scrollbar->IsVertical() ? sizeArrow.y : sizeArrow.x)) *
 316                scrollbar->GetRange() ) /
 317                StandardScrollBarSize(scrollbar, sizeArrow);
 318 }
 319
 320 /* static */
 321 wxHitTest wxRenderer::StandardHitTestScrollbar(const wxScrollBar *scrollbar,
 322                                                const wxPoint& pt,
 323                                                const wxSize& sizeArrowSB)
 324 {
 325     // we only need to work with either x or y coord depending on the
 326     // orientation, choose one (but still check the other one to verify if the
 327     // mouse is in the window at all)
 328     wxCoord coord, sizeArrow, sizeTotal;
 329     wxSize size = scrollbar->GetSize();
 330     if ( scrollbar->GetWindowStyle() & wxVERTICAL )
 331     {
 332         if ( pt.x < 0 || pt.x > size.x )
 333             return wxHT_NOWHERE;
 334
 335         coord = pt.y;
 336         sizeArrow = sizeArrowSB.y;
 337         sizeTotal = size.y;
 338     }
 339     else // horizontal
 340     {
 341         if ( pt.y < 0 || pt.y > size.y )
 342             return wxHT_NOWHERE;
 343
 344         coord = pt.x;
 345         sizeArrow = sizeArrowSB.x;
 346         sizeTotal = size.x;
 347     }
 348
 349     // test for the arrows first as it's faster
 350     if ( coord < 0 || coord > sizeTotal )
 351     {
 352         return wxHT_NOWHERE;
 353     }
 354     else if ( coord < sizeArrow )
 355     {
 356         return wxHT_SCROLLBAR_ARROW_LINE_1;
 357     }
 358     else if ( coord > sizeTotal - sizeArrow )
 359     {
 360         return wxHT_SCROLLBAR_ARROW_LINE_2;
 361     }
 362     else
 363     {
 364         // calculate the thumb position in pixels
 365         sizeTotal -= 2*sizeArrow;
 366         wxCoord thumbStart, thumbEnd;
 367         int range = scrollbar->GetRange();
 368         if ( !range )
 369         {
 370             // clicking the scrollbar without range has no effect
 371             return wxHT_NOWHERE;
 372         }
 373         else
 374         {
 375             StandardScrollBarThumbSize(sizeTotal,
 376                                        scrollbar->GetThumbPosition(),
 377                                        scrollbar->GetThumbSize(),
 378                                        range,
 379                                        &thumbStart,
 380                                        &thumbEnd);
 381         }
 382
 383         // now compare with the thumb position
 384         coord -= sizeArrow;
 385         if ( coord < thumbStart )
 386             return wxHT_SCROLLBAR_BAR_1;
 387         else if ( coord > thumbEnd )
 388             return wxHT_SCROLLBAR_BAR_2;
 389         else
 390             return wxHT_SCROLLBAR_THUMB;
 391     }
 392 }
 393
 394 wxRenderer::~wxRenderer()
 395 {
 396 }
 397
 398 // ----------------------------------------------------------------------------
 399 // wxControlRenderer
 400 // ----------------------------------------------------------------------------
 401
 402 wxControlRenderer::wxControlRenderer(wxWindow *window,
 403                                      wxDC& dc,
 404                                      wxRenderer *renderer)
 405                 : m_dc(dc)
 406 {
 407     m_window = window;
 408     m_renderer = renderer;
 409
 410     wxSize size = m_window->GetClientSize();
 411     m_rect.x =
 412     m_rect.y = 0;
 413     m_rect.width = size.x;
 414     m_rect.height = size.y;
 415 }
 416
 417 void wxControlRenderer::DrawLabel(const wxBitmap& bitmap,
 418                                   wxCoord marginX, wxCoord marginY)
 419 {
 420     m_dc.SetBackgroundMode(wxTRANSPARENT);
 421     m_dc.SetFont(m_window->GetFont());
 422     m_dc.SetTextForeground(m_window->GetForegroundColour());
 423
 424     wxString label = m_window->GetLabel();
 425     if ( !label.empty() || bitmap.Ok() )
 426     {
 427         wxRect rectLabel = m_rect;
 428         if ( bitmap.Ok() )
 429         {
 430             rectLabel.Inflate(-marginX, -marginY);
 431         }
 432
 433         wxControl *ctrl = wxStaticCast(m_window, wxControl);
 434
 435         m_renderer->DrawButtonLabel(m_dc,
 436                                     label,
 437                                     bitmap,
 438                                     rectLabel,
 439                                     m_window->GetStateFlags(),
 440                                     ctrl->GetAlignment(),
 441                                     ctrl->GetAccelIndex());
 442     }
 443 }
 444
 445 void wxControlRenderer::DrawFrame()
 446 {
 447     m_dc.SetFont(m_window->GetFont());
 448     m_dc.SetTextForeground(m_window->GetForegroundColour());
 449     m_dc.SetTextBackground(m_window->GetBackgroundColour());
 450
 451     wxControl *ctrl = wxStaticCast(m_window, wxControl);
 452
 453     m_renderer->DrawFrame(m_dc,
 454                           m_window->GetLabel(),
 455                           m_rect,
 456                           m_window->GetStateFlags(),
 457                           ctrl->GetAlignment(),
 458                           ctrl->GetAccelIndex());
 459 }
 460
 461 void wxControlRenderer::DrawButtonBorder()
 462 {
 463     int flags = m_window->GetStateFlags();
 464
 465     m_renderer->DrawButtonBorder(m_dc, m_rect, flags, &m_rect);
 466
 467     m_renderer->DrawBackground(m_dc, wxTHEME_BG_COLOUR(m_window), m_rect, flags);
 468 }
 469
 470 void wxControlRenderer::DrawBitmap(const wxBitmap& bitmap)
 471 {
 472     int style = m_window->GetWindowStyle();
 473     DrawBitmap(m_dc, bitmap, m_rect,
 474                style & wxALIGN_MASK,
 475                style & wxBI_EXPAND ? wxEXPAND : wxSTRETCH_NOT);
 476 }
 477
 478 /* static */
 479 void wxControlRenderer::DrawBitmap(wxDC &dc,
 480                                    const wxBitmap& bitmap,
 481                                    const wxRect& rect,
 482                                    int alignment,
 483                                    wxStretch stretch)
 484 {
 485     // we may change the bitmap if we stretch it
 486     wxBitmap bmp = bitmap;
 487     if ( !bmp.Ok() )
 488         return;
 489
 490     int width = bmp.GetWidth(),
 491         height = bmp.GetHeight();
 492
 493     wxCoord x = 0,
 494             y = 0;
 495     if ( stretch & wxTILE )
 496     {
 497         // tile the bitmap
 498         for ( ; x < rect.width; x += width )
 499         {
 500             for ( y = 0; y < rect.height; y += height )
 501             {
 502                 // no need to use mask here as we cover the entire window area
 503                 dc.DrawBitmap(bmp, x, y);
 504             }
 505         }
 506     }
 507     else if ( stretch & wxEXPAND )
 508     {
 509         // stretch bitmap to fill the entire control
 510         bmp = wxImage(bmp).Scale(rect.width, rect.height).ConvertToBitmap();
 511     }
 512     else // not stretched, not tiled
 513     {
 514         if ( alignment & wxALIGN_RIGHT )
 515         {
 516             x = rect.GetRight() - width;
 517         }
 518         else if ( alignment & wxALIGN_CENTRE )
 519         {
 520             x = (rect.GetLeft() + rect.GetRight() - width + 1) / 2;
 521         }
 522         else // alignment & wxALIGN_LEFT
 523         {
 524             x = rect.GetLeft();
 525         }
 526
 527         if ( alignment & wxALIGN_BOTTOM )
 528         {
 529             y = rect.GetBottom() - height;
 530         }
 531         else if ( alignment & wxALIGN_CENTRE_VERTICAL )
 532         {
 533             y = (rect.GetTop() + rect.GetBottom() - height + 1) / 2;
 534         }
 535         else // alignment & wxALIGN_TOP
 536         {
 537             y = rect.GetTop();
 538         }
 539     }
 540
 541     // do draw it
 542     dc.DrawBitmap(bmp, x, y, TRUE /* use mask */);
 543 }
 544
 545 void wxControlRenderer::DrawScrollbar(const wxScrollBar *scrollbar,
 546                                       int thumbPosOld)
 547 {
 548     // we will only redraw the parts which must be redrawn and not everything
 549     wxRegion rgnUpdate = scrollbar->GetUpdateRegion();
 550
 551     {
 552         wxRect rectUpdate = rgnUpdate.GetBox();
 553         wxLogTrace(_T("scrollbar"),
 554                    _T("%s redraw: update box is (%d, %d)-(%d, %d)"),
 555                    scrollbar->IsVertical() ? _T("vert") : _T("horz"),
 556                    rectUpdate.GetLeft(),
 557                    rectUpdate.GetTop(),
 558                    rectUpdate.GetRight(),
 559                    rectUpdate.GetBottom());
 560
 561 #if 0 //def WXDEBUG_SCROLLBAR
 562         static bool s_refreshDebug = FALSE;
 563         if ( s_refreshDebug )
 564         {
 565             wxClientDC dc(wxConstCast(scrollbar, wxScrollBar));
 566             dc.SetBrush(*wxRED_BRUSH);
 567             dc.SetPen(*wxTRANSPARENT_PEN);
 568             dc.DrawRectangle(rectUpdate);
 569
 570             // under Unix we use "--sync" X option for this
 571             #ifdef __WXMSW__
 572                 ::GdiFlush();
 573                 ::Sleep(200);
 574             #endif // __WXMSW__
 575         }
 576 #endif // WXDEBUG_SCROLLBAR
 577     }
 578
 579     wxOrientation orient = scrollbar->IsVertical() ? wxVERTICAL
 580                                                    : wxHORIZONTAL;
 581
 582     // the shaft
 583     for ( int nBar = 0; nBar < 2; nBar++ )
 584     {
 585         wxScrollBar::Element elem =
 586             (wxScrollBar::Element)(wxScrollBar::Element_Bar_1 + nBar);
 587
 588         wxRect rectBar = m_renderer->GetScrollbarRect(scrollbar, elem);
 589
 590         if ( rgnUpdate.Contains(rectBar) )
 591         {
 592             wxLogTrace(_T("scrollbar"),
 593                        _T("drawing bar part %d at (%d, %d)-(%d, %d)"),
 594                        nBar + 1,
 595                        rectBar.GetLeft(),
 596                        rectBar.GetTop(),
 597                        rectBar.GetRight(),
 598                        rectBar.GetBottom());
 599
 600             m_renderer->DrawScrollbarShaft(m_dc,
 601                                            orient,
 602                                            rectBar,
 603                                            scrollbar->GetState(elem));
 604         }
 605     }
 606
 607     // arrows
 608     for ( int nArrow = 0; nArrow < 2; nArrow++ )
 609     {
 610         wxScrollBar::Element elem =
 611             (wxScrollBar::Element)(wxScrollBar::Element_Arrow_Line_1 + nArrow);
 612
 613         wxRect rectArrow = m_renderer->GetScrollbarRect(scrollbar, elem);
 614         if ( rgnUpdate.Contains(rectArrow) )
 615         {
 616             wxLogTrace(_T("scrollbar"),
 617                        _T("drawing arrow %d at (%d, %d)-(%d, %d)"),
 618                        nArrow + 1,
 619                        rectArrow.GetLeft(),
 620                        rectArrow.GetTop(),
 621                        rectArrow.GetRight(),
 622                        rectArrow.GetBottom());
 623
 624             scrollbar->GetArrows().DrawArrow
 625             (
 626                 (wxScrollArrows::Arrow)nArrow,
 627                 m_dc,
 628                 rectArrow,
 629                 TRUE // draw a scrollbar arrow, not just an arrow
 630             );
 631         }
 632     }
 633
 634     // TODO: support for page arrows
 635
 636     // and the thumb
 637     wxScrollBar::Element elem = wxScrollBar::Element_Thumb;
 638     wxRect rectThumb = m_renderer->GetScrollbarRect(scrollbar, elem);
 639     if ( rectThumb.width && rectThumb.height && rgnUpdate.Contains(rectThumb) )
 640     {
 641         wxLogTrace(_T("scrollbar"),
 642                    _T("drawing thumb at (%d, %d)-(%d, %d)"),
 643                    rectThumb.GetLeft(),
 644                    rectThumb.GetTop(),
 645                    rectThumb.GetRight(),
 646                    rectThumb.GetBottom());
 647
 648         m_renderer->DrawScrollbarThumb(m_dc,
 649                                        orient,
 650                                        rectThumb,
 651                                        scrollbar->GetState(elem));
 652     }
 653 }
 654
 655 void wxControlRenderer::DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
 656 {
 657     wxASSERT_MSG( x1 == x2 || y1 == y2,
 658                   _T("line must be either horizontal or vertical") );
 659
 660     if ( x1 == x2 )
 661         m_renderer->DrawVerticalLine(m_dc, x1, y1, y2);
 662     else // horizontal
 663         m_renderer->DrawHorizontalLine(m_dc, y1, x1, x2);
 664 }
 665
 666 #if wxUSE_LISTBOX
 667
 668 void wxControlRenderer::DrawItems(const wxListBox *lbox,
 669                                   size_t itemFirst, size_t itemLast)
 670 {
 671     DoDrawItems(lbox, itemFirst, itemLast);
 672 }
 673
 674 void wxControlRenderer::DoDrawItems(const wxListBox *lbox,
 675                                     size_t itemFirst, size_t itemLast,
 676                                     bool isCheckLbox)
 677 {
 678     // prepare for the drawing: calc the initial position
 679     wxCoord lineHeight = lbox->GetLineHeight();
 680
 681     // note that SetClippingRegion() needs the physical (unscrolled)
 682     // coordinates while we use the logical (scrolled) ones for the drawing
 683     // itself
 684     wxRect rect;
 685     wxSize size = lbox->GetClientSize();
 686     rect.width = size.x;
 687     rect.height = size.y;
 688
 689     // keep the text inside the client rect or we will overwrite the vertical
 690     // scrollbar for the long strings
 691     m_dc.SetClippingRegion(rect.x, rect.y, rect.width + 1, rect.height + 1);
 692
 693     // adjust the rect position now
 694     lbox->CalcScrolledPosition(rect.x, rect.y, &rect.x, &rect.y);
 695     rect.y += itemFirst*lineHeight;
 696     rect.height = lineHeight;
 697
 698     // the rect should go to the right visible border so adjust the width if x
 699     // is shifted (rightmost point should stay the same)
 700     rect.width -= rect.x;
 701
 702     // we'll keep the text colour unchanged
 703     m_dc.SetTextForeground(lbox->GetForegroundColour());
 704
 705     // an item should have the focused rect only when the lbox has focus, so
 706     // make sure that we never set wxCONTROL_FOCUSED flag if it doesn't
 707     int itemCurrent = wxWindow::FindFocus() == (wxWindow *)lbox // cast needed
 708                         ? lbox->GetCurrentItem()
 709                         : -1;
 710     for ( size_t n = itemFirst; n < itemLast; n++ )
 711     {
 712         int flags = 0;
 713         if ( (int)n == itemCurrent )
 714             flags |= wxCONTROL_FOCUSED;
 715         if ( lbox->IsSelected(n) )
 716             flags |= wxCONTROL_SELECTED;
 717
 718 #if wxUSE_CHECKLISTBOX
 719         if ( isCheckLbox )
 720         {
 721             wxCheckListBox *checklstbox = wxStaticCast(lbox, wxCheckListBox);
 722             if ( checklstbox->IsChecked(n) )
 723                 flags |= wxCONTROL_CHECKED;
 724
 725             m_renderer->DrawCheckItem(m_dc, lbox->GetString(n),
 726                                       wxNullBitmap,
 727                                       rect,
 728                                       flags);
 729         }
 730         else
 731 #endif // wxUSE_CHECKLISTBOX
 732         {
 733             m_renderer->DrawItem(m_dc, lbox->GetString(n), rect, flags);
 734         }
 735
 736         rect.y += lineHeight;
 737     }
 738 }
 739
 740 #endif // wxUSE_LISTBOX
 741
 742 #if wxUSE_CHECKLISTBOX
 743
 744 void wxControlRenderer::DrawCheckItems(const wxCheckListBox *lbox,
 745                                        size_t itemFirst, size_t itemLast)
 746 {
 747     DoDrawItems(lbox, itemFirst, itemLast, TRUE);
 748 }
 749
 750 #endif // wxUSE_CHECKLISTBOX
 751
 752 #if wxUSE_GAUGE
 753
 754 void wxControlRenderer::DrawProgressBar(const wxGauge *gauge)
 755 {
 756     // draw background
 757     m_dc.SetBrush(wxBrush(m_window->GetBackgroundColour(), wxSOLID));
 758     m_dc.SetPen(*wxTRANSPARENT_PEN);
 759     m_dc.DrawRectangle(m_rect);
 760
 761     int max = gauge->GetRange();
 762     if ( !max )
 763     {
 764         // nothing to draw
 765         return;
 766     }
 767
 768     // calc the filled rect
 769     int pos = gauge->GetValue();
 770     int left = max - pos;
 771
 772     wxRect rect = m_rect;
 773     rect.Deflate(1); // FIXME this depends on the border width
 774
 775     wxColour col = m_window->UseFgCol() ? m_window->GetForegroundColour()
 776                                         : wxTHEME_COLOUR(GAUGE);
 777     m_dc.SetBrush(wxBrush(col, wxSOLID));
 778
 779     if ( gauge->IsSmooth() )
 780     {
 781         // just draw the rectangle in one go
 782         if ( gauge->IsVertical() )
 783         {
 784             // vert bars grow from bottom to top
 785             wxCoord dy = ((rect.height - 1) * left) / max;
 786             rect.y += dy;
 787             rect.height -= dy;
 788         }
 789         else // horizontal
 790         {
 791             // grow from left to right
 792             rect.width -= ((rect.width - 1) * left) / max;
 793         }
 794
 795         m_dc.DrawRectangle(rect);
 796     }
 797     else // discrete
 798     {
 799         wxSize sizeStep = m_renderer->GetProgressBarStep();
 800         int step = gauge->IsVertical() ? sizeStep.y : sizeStep.x;
 801
 802         // we divide by it below!
 803         wxCHECK_RET( step, _T("invalid wxGauge step") );
 804
 805         // round up to make the progress appear to start faster
 806         int lenTotal = gauge->IsVertical() ? rect.height : rect.width;
 807         int steps = ((lenTotal + step - 1) * pos) / (max * step);
 808
 809         // calc the coords of one small rect
 810         wxCoord *px, dx, dy;
 811         if ( gauge->IsVertical() )
 812         {
 813             // draw from bottom to top: so first set y to the bottom
 814             rect.y += rect.height - 1;
 815
 816             // then adjust the height
 817             rect.height = step;
 818
 819             // and then adjust y again to be what it should for the first rect
 820             rect.y -= rect.height;
 821
 822             // we are going up
 823             step = -step;
 824
 825             // remember that this will be the coord which will change
 826             px = &rect.y;
 827
 828             dy = 1;
 829             dx = 0;
 830         }
 831         else // horizontal
 832         {
 833             // don't leave 2 empty pixels in the beginning
 834             rect.x--;
 835
 836             px = &rect.x;
 837             rect.width = step;
 838
 839             dy = 0;
 840             dx = 1;
 841         }
 842
 843         for ( int n = 0; n < steps; n++ )
 844         {
 845             wxRect rectSegment = rect;
 846             rectSegment.Deflate(dx, dy);
 847
 848             m_dc.DrawRectangle(rectSegment);
 849
 850             *px += step;
 851             if ( *px < 1 )
 852             {
 853                 // this can only happen for the last step of vertical gauge
 854                 rect.height = *px - step - 1;
 855                 *px = 1;
 856             }
 857             else if ( *px > lenTotal - step )
 858             {
 859                 // this can only happen for the last step of horizontal gauge
 860                 rect.width = lenTotal - *px - 1;
 861             }
 862         }
 863     }
 864 }
 865
 866 #endif // wxUSE_GAUGE
 867