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 #include "wx/log.h"
  42
  43 #include "wx/univ/theme.h"
  44 #include "wx/univ/renderer.h"
  45 #include "wx/univ/colschem.h"
  46
  47 #if wxUSE_GAUGE
  48 #include "wx/gauge.h"
  49 #endif
  50
  51 // ============================================================================
  52 // implementation
  53 // ============================================================================
  54
  55 // ----------------------------------------------------------------------------
  56 // wxRenderer: drawing helpers
  57 // ----------------------------------------------------------------------------
  58
  59 void wxRenderer::StandardDrawFrame(wxDC& dc,
  60                                    const wxRect& rectFrame,
  61                                    const wxRect& rectLabel)
  62 {
  63     // draw left, bottom and right lines entirely
  64     DrawVerticalLine(dc, rectFrame.GetLeft(),
  65                      rectFrame.GetTop(), rectFrame.GetBottom() - 2);
  66     DrawHorizontalLine(dc, rectFrame.GetBottom() - 1,
  67                        rectFrame.GetLeft(), rectFrame.GetRight());
  68     DrawVerticalLine(dc, rectFrame.GetRight() - 1,
  69                      rectFrame.GetTop(), rectFrame.GetBottom() - 1);
  70
  71     // and 2 parts of the top line
  72     DrawHorizontalLine(dc, rectFrame.GetTop(),
  73                        rectFrame.GetLeft() + 1, rectLabel.GetLeft());
  74     DrawHorizontalLine(dc, rectFrame.GetTop(),
  75                        rectLabel.GetRight(), rectFrame.GetRight() - 2);
  76 }
  77
  78 /* static */
  79 void wxRenderer::StandardDrawTextLine(wxDC& dc,
  80                                       const wxString& text,
  81                                       const wxRect& rect,
  82                                       int selStart, int selEnd,
  83                                       int flags)
  84 {
  85     if ( (selStart == -1) || !(flags & wxCONTROL_FOCUSED) )
  86     {
  87         // just draw it as is
  88         dc.DrawText(text, rect.x, rect.y);
  89     }
  90     else // we have selection
  91     {
  92         wxCoord width,
  93                 x = rect.x;
  94
  95         // draw the part before selection
  96         wxString s(text, (size_t)selStart);
  97         if ( !s.empty() )
  98         {
  99             dc.DrawText(s, x, rect.y);
 100
 101             dc.GetTextExtent(s, &width, NULL);
 102             x += width;
 103         }
 104
 105         // draw the selection itself
 106         s = wxString(text.c_str() + selStart, text.c_str() + selEnd);
 107         if ( !s.empty() )
 108         {
 109             wxColour colFg = dc.GetTextForeground(),
 110                      colBg = dc.GetTextBackground();
 111             dc.SetTextForeground(wxTHEME_COLOUR(HIGHLIGHT_TEXT));
 112             dc.SetTextBackground(wxTHEME_COLOUR(HIGHLIGHT));
 113             dc.SetBackgroundMode(wxSOLID);
 114
 115             dc.DrawText(s, x, rect.y);
 116             dc.GetTextExtent(s, &width, NULL);
 117             x += width;
 118
 119             dc.SetBackgroundMode(wxTRANSPARENT);
 120             dc.SetTextBackground(colBg);
 121             dc.SetTextForeground(colFg);
 122         }
 123
 124         // draw the final part
 125         s = text.c_str() + selEnd;
 126         if ( !s.empty() )
 127         {
 128             dc.DrawText(s, x, rect.y);
 129         }
 130     }
 131 }
 132
 133 // ----------------------------------------------------------------------------
 134 // wxRenderer: scrollbar geometry
 135 // ----------------------------------------------------------------------------
 136
 137 /* static */
 138 void wxRenderer::StandardScrollBarThumbSize(wxCoord length,
 139                                             int thumbPos,
 140                                             int thumbSize,
 141                                             int range,
 142                                             wxCoord *thumbStart,
 143                                             wxCoord *thumbEnd)
 144 {
 145     // the thumb can't be made less than this number of pixels
 146     static const wxCoord thumbMinWidth = 8; // FIXME: should be configurable
 147
 148     *thumbStart = (length*thumbPos) / range;
 149     *thumbEnd = (length*(thumbPos + thumbSize)) / range;
 150
 151     if ( *thumbEnd - *thumbStart < thumbMinWidth )
 152     {
 153         // adjust the end if possible
 154         if ( *thumbStart <= length - thumbMinWidth )
 155         {
 156             // yes, just make it wider
 157             *thumbEnd = *thumbStart + thumbMinWidth;
 158         }
 159         else // it is at the bottom of the scrollbar
 160         {
 161             // so move it a bit up
 162             *thumbStart = length - thumbMinWidth;
 163             *thumbEnd = length;
 164         }
 165     }
 166 }
 167
 168 /* static */
 169 wxRect wxRenderer::StandardGetScrollbarRect(const wxScrollBar *scrollbar,
 170                                             wxScrollBar::Element elem,
 171                                             int thumbPos,
 172                                             const wxSize& sizeArrow)
 173 {
 174     if ( thumbPos == -1 )
 175     {
 176         thumbPos = scrollbar->GetThumbPosition();
 177     }
 178
 179     wxSize sizeTotal = scrollbar->GetClientSize();
 180     wxCoord *start, *width, length, arrow;
 181     wxRect rect;
 182     if ( scrollbar->IsVertical() )
 183     {
 184         rect.x = 0;
 185         rect.width = sizeTotal.x;
 186         length = sizeTotal.y;
 187         start = &rect.y;
 188         width = &rect.height;
 189         arrow = sizeArrow.y;
 190     }
 191     else // horizontal
 192     {
 193         rect.y = 0;
 194         rect.height = sizeTotal.y;
 195         length = sizeTotal.x;
 196         start = &rect.x;
 197         width = &rect.width;
 198         arrow = sizeArrow.x;
 199     }
 200
 201     switch ( elem )
 202     {
 203         case wxScrollBar::Element_Arrow_Line_1:
 204             *start = 0;
 205             *width = arrow;
 206             break;
 207
 208         case wxScrollBar::Element_Arrow_Line_2:
 209             *start = length - arrow;
 210             *width = arrow;
 211             break;
 212
 213         case wxScrollBar::Element_Arrow_Page_1:
 214         case wxScrollBar::Element_Arrow_Page_2:
 215             // we don't have them at all
 216             break;
 217
 218         case wxScrollBar::Element_Thumb:
 219         case wxScrollBar::Element_Bar_1:
 220         case wxScrollBar::Element_Bar_2:
 221             // we need to calculate the thumb position - do it
 222             {
 223                 length -= 2*arrow;
 224                 wxCoord thumbStart, thumbEnd;
 225                 int range = scrollbar->GetRange();
 226                 if ( !range )
 227                 {
 228                     thumbStart =
 229                     thumbEnd = 0;
 230                 }
 231                 else
 232                 {
 233                     StandardScrollBarThumbSize(length,
 234                                                thumbPos,
 235                                                scrollbar->GetThumbSize(),
 236                                                range,
 237                                                &thumbStart,
 238                                                &thumbEnd);
 239                 }
 240
 241                 if ( elem == wxScrollBar::Element_Thumb )
 242                 {
 243                     *start = thumbStart;
 244                     *width = thumbEnd - thumbStart;
 245                 }
 246                 else if ( elem == wxScrollBar::Element_Bar_1 )
 247                 {
 248                     *start = 0;
 249                     *width = thumbStart;
 250                 }
 251                 else // elem == wxScrollBar::Element_Bar_2
 252                 {
 253                     *start = thumbEnd;
 254                     *width = length - thumbEnd;
 255                 }
 256
 257                 // everything is relative to the start of the shaft so far
 258                 *start += arrow;
 259             }
 260             break;
 261
 262         case wxScrollBar::Element_Max:
 263         default:
 264             wxFAIL_MSG( _T("unknown scrollbar element") );
 265     }
 266
 267     return rect;
 268 }
 269
 270 /* static */
 271 wxCoord wxRenderer::StandardScrollBarSize(const wxScrollBar *scrollbar,
 272                                           const wxSize& sizeArrowSB)
 273 {
 274     wxCoord sizeArrow, sizeTotal;
 275     if ( scrollbar->GetWindowStyle() & wxVERTICAL )
 276     {
 277         sizeArrow = sizeArrowSB.y;
 278         sizeTotal = scrollbar->GetSize().y;
 279     }
 280     else // horizontal
 281     {
 282         sizeArrow = sizeArrowSB.x;
 283         sizeTotal = scrollbar->GetSize().x;
 284     }
 285
 286     return sizeTotal - 2*sizeArrow;
 287 }
 288
 289 /* static */
 290 wxCoord wxRenderer::StandardScrollbarToPixel(const wxScrollBar *scrollbar,
 291                                              int thumbPos,
 292                                              const wxSize& sizeArrow)
 293 {
 294     int range = scrollbar->GetRange();
 295     if ( !range )
 296     {
 297         // the only valid position anyhow
 298         return 0;
 299     }
 300
 301     if ( thumbPos == -1 )
 302     {
 303         // by default use the current thumb position
 304         thumbPos = scrollbar->GetThumbPosition();
 305     }
 306
 307     return ( thumbPos*StandardScrollBarSize(scrollbar, sizeArrow) ) / range
 308              + (scrollbar->IsVertical() ? sizeArrow.y : sizeArrow.x);
 309 }
 310
 311 /* static */
 312 int wxRenderer::StandardPixelToScrollbar(const wxScrollBar *scrollbar,
 313                                          wxCoord coord,
 314                                          const wxSize& sizeArrow)
 315 {
 316     return ( (coord - (scrollbar->IsVertical() ? sizeArrow.y : sizeArrow.x)) *
 317                scrollbar->GetRange() ) /
 318                StandardScrollBarSize(scrollbar, sizeArrow);
 319 }
 320
 321 /* static */
 322 wxHitTest wxRenderer::StandardHitTestScrollbar(const wxScrollBar *scrollbar,
 323                                                const wxPoint& pt,
 324                                                const wxSize& sizeArrowSB)
 325 {
 326     // we only need to work with either x or y coord depending on the
 327     // orientation, choose one (but still check the other one to verify if the
 328     // mouse is in the window at all)
 329     wxCoord coord, sizeArrow, sizeTotal;
 330     wxSize size = scrollbar->GetSize();
 331     if ( scrollbar->GetWindowStyle() & wxVERTICAL )
 332     {
 333         if ( pt.x < 0 || pt.x > size.x )
 334             return wxHT_NOWHERE;
 335
 336         coord = pt.y;
 337         sizeArrow = sizeArrowSB.y;
 338         sizeTotal = size.y;
 339     }
 340     else // horizontal
 341     {
 342         if ( pt.y < 0 || pt.y > size.y )
 343             return wxHT_NOWHERE;
 344
 345         coord = pt.x;
 346         sizeArrow = sizeArrowSB.x;
 347         sizeTotal = size.x;
 348     }
 349
 350     // test for the arrows first as it's faster
 351     if ( coord < 0 || coord > sizeTotal )
 352     {
 353         return wxHT_NOWHERE;
 354     }
 355     else if ( coord < sizeArrow )
 356     {
 357         return wxHT_SCROLLBAR_ARROW_LINE_1;
 358     }
 359     else if ( coord > sizeTotal - sizeArrow )
 360     {
 361         return wxHT_SCROLLBAR_ARROW_LINE_2;
 362     }
 363     else
 364     {
 365         // calculate the thumb position in pixels
 366         sizeTotal -= 2*sizeArrow;
 367         wxCoord thumbStart, thumbEnd;
 368         int range = scrollbar->GetRange();
 369         if ( !range )
 370         {
 371             // clicking the scrollbar without range has no effect
 372             return wxHT_NOWHERE;
 373         }
 374         else
 375         {
 376             StandardScrollBarThumbSize(sizeTotal,
 377                                        scrollbar->GetThumbPosition(),
 378                                        scrollbar->GetThumbSize(),
 379                                        range,
 380                                        &thumbStart,
 381                                        &thumbEnd);
 382         }
 383
 384         // now compare with the thumb position
 385         coord -= sizeArrow;
 386         if ( coord < thumbStart )
 387             return wxHT_SCROLLBAR_BAR_1;
 388         else if ( coord > thumbEnd )
 389             return wxHT_SCROLLBAR_BAR_2;
 390         else
 391             return wxHT_SCROLLBAR_THUMB;
 392     }
 393 }
 394
 395 wxRenderer::~wxRenderer()
 396 {
 397 }
 398
 399 // ----------------------------------------------------------------------------
 400 // wxControlRenderer
 401 // ----------------------------------------------------------------------------
 402
 403 wxControlRenderer::wxControlRenderer(wxWindow *window,
 404                                      wxDC& dc,
 405                                      wxRenderer *renderer)
 406                 : m_dc(dc)
 407 {
 408     m_window = window;
 409     m_renderer = renderer;
 410
 411     wxSize size = m_window->GetClientSize();
 412     m_rect.x =
 413     m_rect.y = 0;
 414     m_rect.width = size.x;
 415     m_rect.height = size.y;
 416 }
 417
 418 void wxControlRenderer::DrawLabel(const wxBitmap& bitmap,
 419                                   wxCoord marginX, wxCoord marginY)
 420 {
 421     m_dc.SetBackgroundMode(wxTRANSPARENT);
 422     m_dc.SetFont(m_window->GetFont());
 423     m_dc.SetTextForeground(m_window->GetForegroundColour());
 424
 425     wxString label = m_window->GetLabel();
 426     if ( !label.empty() || bitmap.Ok() )
 427     {
 428         wxRect rectLabel = m_rect;
 429         if ( bitmap.Ok() )
 430         {
 431             rectLabel.Inflate(-marginX, -marginY);
 432
 433             // I don't know why this is necessary. RR.
 434             rectLabel.x ++;
 435             rectLabel.y ++;
 436         }
 437
 438         wxControl *ctrl = wxStaticCast(m_window, wxControl);
 439
 440         m_renderer->DrawButtonLabel(m_dc,
 441                                     label,
 442                                     bitmap,
 443                                     rectLabel,
 444                                     m_window->GetStateFlags(),
 445                                     ctrl->GetAlignment(),
 446                                     ctrl->GetAccelIndex());
 447     }
 448 }
 449
 450 void wxControlRenderer::DrawFrame()
 451 {
 452     m_dc.SetFont(m_window->GetFont());
 453     m_dc.SetTextForeground(m_window->GetForegroundColour());
 454     m_dc.SetTextBackground(m_window->GetBackgroundColour());
 455
 456     wxControl *ctrl = wxStaticCast(m_window, wxControl);
 457
 458     m_renderer->DrawFrame(m_dc,
 459                           m_window->GetLabel(),
 460                           m_rect,
 461                           m_window->GetStateFlags(),
 462                           ctrl->GetAlignment(),
 463                           ctrl->GetAccelIndex());
 464 }
 465
 466 void wxControlRenderer::DrawButtonBorder()
 467 {
 468     int flags = m_window->GetStateFlags();
 469
 470     m_renderer->DrawButtonBorder(m_dc, m_rect, flags, &m_rect);
 471
 472     // Why do this here?
 473     // m_renderer->DrawButtonSurface(m_dc, wxTHEME_BG_COLOUR(m_window), m_rect, flags );
 474 }
 475
 476 void wxControlRenderer::DrawBitmap(const wxBitmap& bitmap)
 477 {
 478     int style = m_window->GetWindowStyle();
 479     DrawBitmap(m_dc, bitmap, m_rect,
 480                style & wxALIGN_MASK,
 481                style & wxBI_EXPAND ? wxEXPAND : wxSTRETCH_NOT);
 482 }
 483
 484 /* static */
 485 void wxControlRenderer::DrawBitmap(wxDC &dc,
 486                                    const wxBitmap& bitmap,
 487                                    const wxRect& rect,
 488                                    int alignment,
 489                                    wxStretch stretch)
 490 {
 491     // we may change the bitmap if we stretch it
 492     wxBitmap bmp = bitmap;
 493     if ( !bmp.Ok() )
 494         return;
 495
 496     int width = bmp.GetWidth(),
 497         height = bmp.GetHeight();
 498
 499     wxCoord x = 0,
 500             y = 0;
 501     if ( stretch & wxTILE )
 502     {
 503         // tile the bitmap
 504         for ( ; x < rect.width; x += width )
 505         {
 506             for ( y = 0; y < rect.height; y += height )
 507             {
 508                 // no need to use mask here as we cover the entire window area
 509                 dc.DrawBitmap(bmp, x, y);
 510             }
 511         }
 512     }
 513     else if ( stretch & wxEXPAND )
 514     {
 515         // stretch bitmap to fill the entire control
 516         bmp = wxBitmap(wxImage(bmp.ConvertToImage()).Scale(rect.width, rect.height));
 517     }
 518     else // not stretched, not tiled
 519     {
 520         if ( alignment & wxALIGN_RIGHT )
 521         {
 522             x = rect.GetRight() - width;
 523         }
 524         else if ( alignment & wxALIGN_CENTRE )
 525         {
 526             x = (rect.GetLeft() + rect.GetRight() - width + 1) / 2;
 527         }
 528         else // alignment & wxALIGN_LEFT
 529         {
 530             x = rect.GetLeft();
 531         }
 532
 533         if ( alignment & wxALIGN_BOTTOM )
 534         {
 535             y = rect.GetBottom() - height;
 536         }
 537         else if ( alignment & wxALIGN_CENTRE_VERTICAL )
 538         {
 539             y = (rect.GetTop() + rect.GetBottom() - height + 1) / 2;
 540         }
 541         else // alignment & wxALIGN_TOP
 542         {
 543             y = rect.GetTop();
 544         }
 545     }
 546
 547     // do draw it
 548     dc.DrawBitmap(bmp, x, y, TRUE /* use mask */);
 549 }
 550
 551 void wxControlRenderer::DrawScrollbar(const wxScrollBar *scrollbar,
 552                                       int thumbPosOld)
 553 {
 554     // we will only redraw the parts which must be redrawn and not everything
 555     wxRegion rgnUpdate = scrollbar->GetUpdateRegion();
 556
 557     {
 558         wxRect rectUpdate = rgnUpdate.GetBox();
 559         wxLogTrace(_T("scrollbar"),
 560                    _T("%s redraw: update box is (%d, %d)-(%d, %d)"),
 561                    scrollbar->IsVertical() ? _T("vert") : _T("horz"),
 562                    rectUpdate.GetLeft(),
 563                    rectUpdate.GetTop(),
 564                    rectUpdate.GetRight(),
 565                    rectUpdate.GetBottom());
 566
 567 #if 0 //def WXDEBUG_SCROLLBAR
 568         static bool s_refreshDebug = FALSE;
 569         if ( s_refreshDebug )
 570         {
 571             wxClientDC dc(wxConstCast(scrollbar, wxScrollBar));
 572             dc.SetBrush(*wxRED_BRUSH);
 573             dc.SetPen(*wxTRANSPARENT_PEN);
 574             dc.DrawRectangle(rectUpdate);
 575
 576             // under Unix we use "--sync" X option for this
 577             #ifdef __WXMSW__
 578                 ::GdiFlush();
 579                 ::Sleep(200);
 580             #endif // __WXMSW__
 581         }
 582 #endif // WXDEBUG_SCROLLBAR
 583     }
 584
 585     wxOrientation orient = scrollbar->IsVertical() ? wxVERTICAL
 586                                                    : wxHORIZONTAL;
 587
 588     // the shaft
 589     for ( int nBar = 0; nBar < 2; nBar++ )
 590     {
 591         wxScrollBar::Element elem =
 592             (wxScrollBar::Element)(wxScrollBar::Element_Bar_1 + nBar);
 593
 594         wxRect rectBar = m_renderer->GetScrollbarRect(scrollbar, elem);
 595
 596         if ( rgnUpdate.Contains(rectBar) )
 597         {
 598             wxLogTrace(_T("scrollbar"),
 599                        _T("drawing bar part %d at (%d, %d)-(%d, %d)"),
 600                        nBar + 1,
 601                        rectBar.GetLeft(),
 602                        rectBar.GetTop(),
 603                        rectBar.GetRight(),
 604                        rectBar.GetBottom());
 605
 606             m_renderer->DrawScrollbarShaft(m_dc,
 607                                            orient,
 608                                            rectBar,
 609                                            scrollbar->GetState(elem));
 610         }
 611     }
 612
 613     // arrows
 614     for ( int nArrow = 0; nArrow < 2; nArrow++ )
 615     {
 616         wxScrollBar::Element elem =
 617             (wxScrollBar::Element)(wxScrollBar::Element_Arrow_Line_1 + nArrow);
 618
 619         wxRect rectArrow = m_renderer->GetScrollbarRect(scrollbar, elem);
 620         if ( rgnUpdate.Contains(rectArrow) )
 621         {
 622             wxLogTrace(_T("scrollbar"),
 623                        _T("drawing arrow %d at (%d, %d)-(%d, %d)"),
 624                        nArrow + 1,
 625                        rectArrow.GetLeft(),
 626                        rectArrow.GetTop(),
 627                        rectArrow.GetRight(),
 628                        rectArrow.GetBottom());
 629
 630             scrollbar->GetArrows().DrawArrow
 631             (
 632                 (wxScrollArrows::Arrow)nArrow,
 633                 m_dc,
 634                 rectArrow,
 635                 TRUE // draw a scrollbar arrow, not just an arrow
 636             );
 637         }
 638     }
 639
 640     // TODO: support for page arrows
 641
 642     // and the thumb
 643     wxScrollBar::Element elem = wxScrollBar::Element_Thumb;
 644     wxRect rectThumb = m_renderer->GetScrollbarRect(scrollbar, elem);
 645     if ( rectThumb.width && rectThumb.height && rgnUpdate.Contains(rectThumb) )
 646     {
 647         wxLogTrace(_T("scrollbar"),
 648                    _T("drawing thumb at (%d, %d)-(%d, %d)"),
 649                    rectThumb.GetLeft(),
 650                    rectThumb.GetTop(),
 651                    rectThumb.GetRight(),
 652                    rectThumb.GetBottom());
 653
 654         m_renderer->DrawScrollbarThumb(m_dc,
 655                                        orient,
 656                                        rectThumb,
 657                                        scrollbar->GetState(elem));
 658     }
 659 }
 660
 661 void wxControlRenderer::DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
 662 {
 663     wxASSERT_MSG( x1 == x2 || y1 == y2,
 664                   _T("line must be either horizontal or vertical") );
 665
 666     if ( x1 == x2 )
 667         m_renderer->DrawVerticalLine(m_dc, x1, y1, y2);
 668     else // horizontal
 669         m_renderer->DrawHorizontalLine(m_dc, y1, x1, x2);
 670 }
 671
 672 #if wxUSE_LISTBOX
 673
 674 void wxControlRenderer::DrawItems(const wxListBox *lbox,
 675                                   size_t itemFirst, size_t itemLast)
 676 {
 677     DoDrawItems(lbox, itemFirst, itemLast);
 678 }
 679
 680 void wxControlRenderer::DoDrawItems(const wxListBox *lbox,
 681                                     size_t itemFirst, size_t itemLast,
 682                                     bool isCheckLbox)
 683 {
 684     // prepare for the drawing: calc the initial position
 685     wxCoord lineHeight = lbox->GetLineHeight();
 686
 687     // note that SetClippingRegion() needs the physical (unscrolled)
 688     // coordinates while we use the logical (scrolled) ones for the drawing
 689     // itself
 690     wxRect rect;
 691     wxSize size = lbox->GetClientSize();
 692     rect.width = size.x;
 693     rect.height = size.y;
 694
 695     // keep the text inside the client rect or we will overwrite the vertical
 696     // scrollbar for the long strings
 697     m_dc.SetClippingRegion(rect.x, rect.y, rect.width + 1, rect.height + 1);
 698
 699     // adjust the rect position now
 700     lbox->CalcScrolledPosition(rect.x, rect.y, &rect.x, &rect.y);
 701     rect.y += itemFirst*lineHeight;
 702     rect.height = lineHeight;
 703
 704     // the rect should go to the right visible border so adjust the width if x
 705     // is shifted (rightmost point should stay the same)
 706     rect.width -= rect.x;
 707
 708     // we'll keep the text colour unchanged
 709     m_dc.SetTextForeground(lbox->GetForegroundColour());
 710
 711     // an item should have the focused rect only when the lbox has focus, so
 712     // make sure that we never set wxCONTROL_FOCUSED flag if it doesn't
 713     int itemCurrent = wxWindow::FindFocus() == (wxWindow *)lbox // cast needed
 714                         ? lbox->GetCurrentItem()
 715                         : -1;
 716     for ( size_t n = itemFirst; n < itemLast; n++ )
 717     {
 718         int flags = 0;
 719         if ( (int)n == itemCurrent )
 720             flags |= wxCONTROL_FOCUSED;
 721         if ( lbox->IsSelected(n) )
 722             flags |= wxCONTROL_SELECTED;
 723
 724 #if wxUSE_CHECKLISTBOX
 725         if ( isCheckLbox )
 726         {
 727             wxCheckListBox *checklstbox = wxStaticCast(lbox, wxCheckListBox);
 728             if ( checklstbox->IsChecked(n) )
 729                 flags |= wxCONTROL_CHECKED;
 730
 731             m_renderer->DrawCheckItem(m_dc, lbox->GetString(n),
 732                                       wxNullBitmap,
 733                                       rect,
 734                                       flags);
 735         }
 736         else
 737 #endif // wxUSE_CHECKLISTBOX
 738         {
 739             m_renderer->DrawItem(m_dc, lbox->GetString(n), rect, flags);
 740         }
 741
 742         rect.y += lineHeight;
 743     }
 744 }
 745
 746 #endif // wxUSE_LISTBOX
 747
 748 #if wxUSE_CHECKLISTBOX
 749
 750 void wxControlRenderer::DrawCheckItems(const wxCheckListBox *lbox,
 751                                        size_t itemFirst, size_t itemLast)
 752 {
 753     DoDrawItems(lbox, itemFirst, itemLast, TRUE);
 754 }
 755
 756 #endif // wxUSE_CHECKLISTBOX
 757
 758 #if wxUSE_GAUGE
 759
 760 void wxControlRenderer::DrawProgressBar(const wxGauge *gauge)
 761 {
 762     // draw background
 763     m_dc.SetBrush(wxBrush(m_window->GetBackgroundColour(), wxSOLID));
 764     m_dc.SetPen(*wxTRANSPARENT_PEN);
 765     m_dc.DrawRectangle(m_rect);
 766
 767     int max = gauge->GetRange();
 768     if ( !max )
 769     {
 770         // nothing to draw
 771         return;
 772     }
 773
 774     // calc the filled rect
 775     int pos = gauge->GetValue();
 776     int left = max - pos;
 777
 778     wxRect rect = m_rect;
 779     rect.Deflate(1); // FIXME this depends on the border width
 780
 781     wxColour col = m_window->UseFgCol() ? m_window->GetForegroundColour()
 782                                         : wxTHEME_COLOUR(GAUGE);
 783     m_dc.SetBrush(wxBrush(col, wxSOLID));
 784
 785     if ( gauge->IsSmooth() )
 786     {
 787         // just draw the rectangle in one go
 788         if ( gauge->IsVertical() )
 789         {
 790             // vert bars grow from bottom to top
 791             wxCoord dy = ((rect.height - 1) * left) / max;
 792             rect.y += dy;
 793             rect.height -= dy;
 794         }
 795         else // horizontal
 796         {
 797             // grow from left to right
 798             rect.width -= ((rect.width - 1) * left) / max;
 799         }
 800
 801         m_dc.DrawRectangle(rect);
 802     }
 803     else // discrete
 804     {
 805         wxSize sizeStep = m_renderer->GetProgressBarStep();
 806         int step = gauge->IsVertical() ? sizeStep.y : sizeStep.x;
 807
 808         // we divide by it below!
 809         wxCHECK_RET( step, _T("invalid wxGauge step") );
 810
 811         // round up to make the progress appear to start faster
 812         int lenTotal = gauge->IsVertical() ? rect.height : rect.width;
 813         int steps = ((lenTotal + step - 1) * pos) / (max * step);
 814
 815         // calc the coords of one small rect
 816         wxCoord *px, dx, dy;
 817         if ( gauge->IsVertical() )
 818         {
 819             // draw from bottom to top: so first set y to the bottom
 820             rect.y += rect.height - 1;
 821
 822             // then adjust the height
 823             rect.height = step;
 824
 825             // and then adjust y again to be what it should for the first rect
 826             rect.y -= rect.height;
 827
 828             // we are going up
 829             step = -step;
 830
 831             // remember that this will be the coord which will change
 832             px = &rect.y;
 833
 834             dy = 1;
 835             dx = 0;
 836         }
 837         else // horizontal
 838         {
 839             // don't leave 2 empty pixels in the beginning
 840             rect.x--;
 841
 842             px = &rect.x;
 843             rect.width = step;
 844
 845             dy = 0;
 846             dx = 1;
 847         }
 848
 849         for ( int n = 0; n < steps; n++ )
 850         {
 851             wxRect rectSegment = rect;
 852             rectSegment.Deflate(dx, dy);
 853
 854             m_dc.DrawRectangle(rectSegment);
 855
 856             *px += step;
 857             if ( *px < 1 )
 858             {
 859                 // this can only happen for the last step of vertical gauge
 860                 rect.height = *px - step - 1;
 861                 *px = 1;
 862             }
 863             else if ( *px > lenTotal - step )
 864             {
 865                 // this can only happen for the last step of horizontal gauge
 866                 rect.width = lenTotal - *px - 1;
 867             }
 868         }
 869     }
 870 }
 871
 872 #endif // wxUSE_GAUGE
 873