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.SetFont(m_window->GetFont());
 421     m_dc.SetTextForeground(m_window->GetForegroundColour());
 422
 423     wxString label = m_window->GetLabel();
 424     if ( !label.empty() || bitmap.Ok() )
 425     {
 426         wxRect rectLabel = m_rect;
 427         if ( bitmap.Ok() )
 428         {
 429             rectLabel.Inflate(-marginX, -marginY);
 430         }
 431
 432         wxControl *ctrl = wxStaticCast(m_window, wxControl);
 433
 434         m_renderer->DrawButtonLabel(m_dc,
 435                                     label,
 436                                     bitmap,
 437                                     rectLabel,
 438                                     m_window->GetStateFlags(),
 439                                     ctrl->GetAlignment(),
 440                                     ctrl->GetAccelIndex());
 441     }
 442 }
 443
 444 void wxControlRenderer::DrawFrame()
 445 {
 446     m_dc.SetFont(m_window->GetFont());
 447     m_dc.SetTextForeground(m_window->GetForegroundColour());
 448     m_dc.SetTextBackground(m_window->GetBackgroundColour());
 449
 450     wxControl *ctrl = wxStaticCast(m_window, wxControl);
 451
 452     m_renderer->DrawFrame(m_dc,
 453                           m_window->GetLabel(),
 454                           m_rect,
 455                           m_window->GetStateFlags(),
 456                           ctrl->GetAlignment(),
 457                           ctrl->GetAccelIndex());
 458 }
 459
 460 void wxControlRenderer::DrawButtonBorder()
 461 {
 462     int flags = m_window->GetStateFlags();
 463
 464     m_renderer->DrawButtonBorder(m_dc, m_rect, flags, &m_rect);
 465
 466     m_renderer->DrawBackground(m_dc, wxTHEME_BG_COLOUR(m_window), m_rect, flags);
 467 }
 468
 469 void wxControlRenderer::DrawBitmap(const wxBitmap& bitmap)
 470 {
 471     int style = m_window->GetWindowStyle();
 472     DrawBitmap(m_dc, bitmap, m_rect,
 473                style & wxALIGN_MASK,
 474                style & wxBI_EXPAND ? wxEXPAND : wxSTRETCH_NOT);
 475 }
 476
 477 /* static */
 478 void wxControlRenderer::DrawBitmap(wxDC &dc,
 479                                    const wxBitmap& bitmap,
 480                                    const wxRect& rect,
 481                                    int alignment,
 482                                    wxStretch stretch)
 483 {
 484     // we may change the bitmap if we stretch it
 485     wxBitmap bmp = bitmap;
 486     if ( !bmp.Ok() )
 487         return;
 488
 489     int width = bmp.GetWidth(),
 490         height = bmp.GetHeight();
 491
 492     wxCoord x = 0,
 493             y = 0;
 494     if ( stretch & wxTILE )
 495     {
 496         // tile the bitmap
 497         for ( ; x < rect.width; x += width )
 498         {
 499             for ( y = 0; y < rect.height; y += height )
 500             {
 501                 // no need to use mask here as we cover the entire window area
 502                 dc.DrawBitmap(bmp, x, y);
 503             }
 504         }
 505     }
 506     else if ( stretch & wxEXPAND )
 507     {
 508         // stretch bitmap to fill the entire control
 509         bmp = wxImage(bmp).Scale(rect.width, rect.height).ConvertToBitmap();
 510     }
 511     else // not stretched, not tiled
 512     {
 513         if ( alignment & wxALIGN_RIGHT )
 514         {
 515             x = rect.GetRight() - width;
 516         }
 517         else if ( alignment & wxALIGN_CENTRE )
 518         {
 519             x = (rect.GetLeft() + rect.GetRight() - width + 1) / 2;
 520         }
 521         else // alignment & wxALIGN_LEFT
 522         {
 523             x = rect.GetLeft();
 524         }
 525
 526         if ( alignment & wxALIGN_BOTTOM )
 527         {
 528             y = rect.GetBottom() - height;
 529         }
 530         else if ( alignment & wxALIGN_CENTRE_VERTICAL )
 531         {
 532             y = (rect.GetTop() + rect.GetBottom() - height + 1) / 2;
 533         }
 534         else // alignment & wxALIGN_TOP
 535         {
 536             y = rect.GetTop();
 537         }
 538     }
 539
 540     // do draw it
 541     dc.DrawBitmap(bmp, x, y, TRUE /* use mask */);
 542 }
 543
 544 void wxControlRenderer::DrawScrollbar(const wxScrollBar *scrollbar,
 545                                       int thumbPosOld)
 546 {
 547     // we will only redraw the parts which must be redrawn and not everything
 548     wxRegion rgnUpdate = scrollbar->GetUpdateRegion();
 549
 550     {
 551         wxRect rectUpdate = rgnUpdate.GetBox();
 552         wxLogTrace(_T("scrollbar"),
 553                    _T("%s redraw: update box is (%d, %d)-(%d, %d)"),
 554                    scrollbar->IsVertical() ? _T("vert") : _T("horz"),
 555                    rectUpdate.GetLeft(),
 556                    rectUpdate.GetTop(),
 557                    rectUpdate.GetRight(),
 558                    rectUpdate.GetBottom());
 559
 560 #if 0 //def WXDEBUG_SCROLLBAR
 561         static bool s_refreshDebug = FALSE;
 562         if ( s_refreshDebug )
 563         {
 564             wxClientDC dc(wxConstCast(scrollbar, wxScrollBar));
 565             dc.SetBrush(*wxRED_BRUSH);
 566             dc.SetPen(*wxTRANSPARENT_PEN);
 567             dc.DrawRectangle(rectUpdate);
 568
 569             // under Unix we use "--sync" X option for this
 570             #ifdef __WXMSW__
 571                 ::GdiFlush();
 572                 ::Sleep(200);
 573             #endif // __WXMSW__
 574         }
 575 #endif // WXDEBUG_SCROLLBAR
 576     }
 577
 578     wxOrientation orient = scrollbar->IsVertical() ? wxVERTICAL
 579                                                    : wxHORIZONTAL;
 580
 581     // the shaft
 582     for ( int nBar = 0; nBar < 2; nBar++ )
 583     {
 584         wxScrollBar::Element elem =
 585             (wxScrollBar::Element)(wxScrollBar::Element_Bar_1 + nBar);
 586
 587         wxRect rectBar = m_renderer->GetScrollbarRect(scrollbar, elem);
 588
 589         if ( rgnUpdate.Contains(rectBar) )
 590         {
 591             wxLogTrace(_T("scrollbar"),
 592                        _T("drawing bar part %d at (%d, %d)-(%d, %d)"),
 593                        nBar + 1,
 594                        rectBar.GetLeft(),
 595                        rectBar.GetTop(),
 596                        rectBar.GetRight(),
 597                        rectBar.GetBottom());
 598
 599             m_renderer->DrawScrollbarShaft(m_dc,
 600                                            orient,
 601                                            rectBar,
 602                                            scrollbar->GetState(elem));
 603         }
 604     }
 605
 606     // arrows
 607     for ( int nArrow = 0; nArrow < 2; nArrow++ )
 608     {
 609         wxScrollBar::Element elem =
 610             (wxScrollBar::Element)(wxScrollBar::Element_Arrow_Line_1 + nArrow);
 611
 612         wxRect rectArrow = m_renderer->GetScrollbarRect(scrollbar, elem);
 613         if ( rgnUpdate.Contains(rectArrow) )
 614         {
 615             wxLogTrace(_T("scrollbar"),
 616                        _T("drawing arrow %d at (%d, %d)-(%d, %d)"),
 617                        nArrow + 1,
 618                        rectArrow.GetLeft(),
 619                        rectArrow.GetTop(),
 620                        rectArrow.GetRight(),
 621                        rectArrow.GetBottom());
 622
 623             scrollbar->GetArrows().DrawArrow
 624             (
 625                 (wxScrollArrows::Arrow)nArrow,
 626                 m_dc,
 627                 rectArrow,
 628                 TRUE // draw a scrollbar arrow, not just an arrow
 629             );
 630         }
 631     }
 632
 633     // TODO: support for page arrows
 634
 635     // and the thumb
 636     wxScrollBar::Element elem = wxScrollBar::Element_Thumb;
 637     wxRect rectThumb = m_renderer->GetScrollbarRect(scrollbar, elem);
 638     if ( rectThumb.width && rectThumb.height && rgnUpdate.Contains(rectThumb) )
 639     {
 640         wxLogTrace(_T("scrollbar"),
 641                    _T("drawing thumb at (%d, %d)-(%d, %d)"),
 642                    rectThumb.GetLeft(),
 643                    rectThumb.GetTop(),
 644                    rectThumb.GetRight(),
 645                    rectThumb.GetBottom());
 646
 647         m_renderer->DrawScrollbarThumb(m_dc,
 648                                        orient,
 649                                        rectThumb,
 650                                        scrollbar->GetState(elem));
 651     }
 652 }
 653
 654 void wxControlRenderer::DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
 655 {
 656     wxASSERT_MSG( x1 == x2 || y1 == y2,
 657                   _T("line must be either horizontal or vertical") );
 658
 659     if ( x1 == x2 )
 660         m_renderer->DrawVerticalLine(m_dc, x1, y1, y2);
 661     else // horizontal
 662         m_renderer->DrawHorizontalLine(m_dc, y1, x1, x2);
 663 }
 664
 665 #if wxUSE_LISTBOX
 666
 667 void wxControlRenderer::DrawItems(const wxListBox *lbox,
 668                                   size_t itemFirst, size_t itemLast)
 669 {
 670     DoDrawItems(lbox, itemFirst, itemLast);
 671 }
 672
 673 void wxControlRenderer::DoDrawItems(const wxListBox *lbox,
 674                                     size_t itemFirst, size_t itemLast,
 675                                     bool isCheckLbox)
 676 {
 677     // prepare for the drawing: calc the initial position
 678     wxCoord lineHeight = lbox->GetLineHeight();
 679
 680     // note that SetClippingRegion() needs the physical (unscrolled)
 681     // coordinates while we use the logical (scrolled) ones for the drawing
 682     // itself
 683     wxRect rect;
 684     wxSize size = lbox->GetClientSize();
 685     rect.width = size.x;
 686     rect.height = size.y;
 687
 688     // keep the text inside the client rect or we will overwrite the vertical
 689     // scrollbar for the long strings
 690     m_dc.SetClippingRegion(rect.x, rect.y, rect.width + 1, rect.height + 1);
 691
 692     // adjust the rect position now
 693     lbox->CalcScrolledPosition(rect.x, rect.y, &rect.x, &rect.y);
 694     rect.y += itemFirst*lineHeight;
 695     rect.height = lineHeight;
 696
 697     // the rect should go to the right visible border so adjust the width if x
 698     // is shifted (rightmost point should stay the same)
 699     rect.width -= rect.x;
 700
 701     // we'll keep the text colour unchanged
 702     m_dc.SetTextForeground(lbox->GetForegroundColour());
 703
 704     // an item should have the focused rect only when the lbox has focus, so
 705     // make sure that we never set wxCONTROL_FOCUSED flag if it doesn't
 706     int itemCurrent = wxWindow::FindFocus() == (wxWindow *)lbox // cast needed
 707                         ? lbox->GetCurrentItem()
 708                         : -1;
 709     for ( size_t n = itemFirst; n < itemLast; n++ )
 710     {
 711         int flags = 0;
 712         if ( (int)n == itemCurrent )
 713             flags |= wxCONTROL_FOCUSED;
 714         if ( lbox->IsSelected(n) )
 715             flags |= wxCONTROL_SELECTED;
 716
 717 #if wxUSE_CHECKLISTBOX
 718         if ( isCheckLbox )
 719         {
 720             wxCheckListBox *checklstbox = wxStaticCast(lbox, wxCheckListBox);
 721             if ( checklstbox->IsChecked(n) )
 722                 flags |= wxCONTROL_CHECKED;
 723
 724             m_renderer->DrawCheckItem(m_dc, lbox->GetString(n),
 725                                       wxNullBitmap,
 726                                       rect,
 727                                       flags);
 728         }
 729         else
 730 #endif // wxUSE_CHECKLISTBOX
 731         {
 732             m_renderer->DrawItem(m_dc, lbox->GetString(n), rect, flags);
 733         }
 734
 735         rect.y += lineHeight;
 736     }
 737 }
 738
 739 #endif // wxUSE_LISTBOX
 740
 741 #if wxUSE_CHECKLISTBOX
 742
 743 void wxControlRenderer::DrawCheckItems(const wxCheckListBox *lbox,
 744                                        size_t itemFirst, size_t itemLast)
 745 {
 746     DoDrawItems(lbox, itemFirst, itemLast, TRUE);
 747 }
 748
 749 #endif // wxUSE_CHECKLISTBOX
 750
 751 #if wxUSE_GAUGE
 752
 753 void wxControlRenderer::DrawProgressBar(const wxGauge *gauge)
 754 {
 755     // draw background
 756     m_dc.SetBrush(wxBrush(m_window->GetBackgroundColour(), wxSOLID));
 757     m_dc.SetPen(*wxTRANSPARENT_PEN);
 758     m_dc.DrawRectangle(m_rect);
 759
 760     int max = gauge->GetRange();
 761     if ( !max )
 762     {
 763         // nothing to draw
 764         return;
 765     }
 766
 767     // calc the filled rect
 768     int pos = gauge->GetValue();
 769     int left = max - pos;
 770
 771     wxRect rect = m_rect;
 772     rect.Deflate(1); // FIXME this depends on the border width
 773
 774     wxColour col = m_window->UseFgCol() ? m_window->GetForegroundColour()
 775                                         : wxTHEME_COLOUR(GAUGE);
 776     m_dc.SetBrush(wxBrush(col, wxSOLID));
 777
 778     if ( gauge->IsSmooth() )
 779     {
 780         // just draw the rectangle in one go
 781         if ( gauge->IsVertical() )
 782         {
 783             // vert bars grow from bottom to top
 784             wxCoord dy = ((rect.height - 1) * left) / max;
 785             rect.y += dy;
 786             rect.height -= dy;
 787         }
 788         else // horizontal
 789         {
 790             // grow from left to right
 791             rect.width -= ((rect.width - 1) * left) / max;
 792         }
 793
 794         m_dc.DrawRectangle(rect);
 795     }
 796     else // discrete
 797     {
 798         wxSize sizeStep = m_renderer->GetProgressBarStep();
 799         int step = gauge->IsVertical() ? sizeStep.y : sizeStep.x;
 800
 801         // we divide by it below!
 802         wxCHECK_RET( step, _T("invalid wxGauge step") );
 803
 804         // round up to make the progress appear to start faster
 805         int lenTotal = gauge->IsVertical() ? rect.height : rect.width;
 806         int steps = ((lenTotal + step - 1) * pos) / (max * step);
 807
 808         // calc the coords of one small rect
 809         wxCoord *px, dx, dy;
 810         if ( gauge->IsVertical() )
 811         {
 812             // draw from bottom to top: so first set y to the bottom
 813             rect.y += rect.height - 1;
 814
 815             // then adjust the height
 816             rect.height = step;
 817
 818             // and then adjust y again to be what it should for the first rect
 819             rect.y -= rect.height;
 820
 821             // we are going up
 822             step = -step;
 823
 824             // remember that this will be the coord which will change
 825             px = &rect.y;
 826
 827             dy = 1;
 828             dx = 0;
 829         }
 830         else // horizontal
 831         {
 832             // don't leave 2 empty pixels in the beginning
 833             rect.x--;
 834
 835             px = &rect.x;
 836             rect.width = step;
 837
 838             dy = 0;
 839             dx = 1;
 840         }
 841
 842         for ( int n = 0; n < steps; n++ )
 843         {
 844             wxRect rectSegment = rect;
 845             rectSegment.Deflate(dx, dy);
 846
 847             m_dc.DrawRectangle(rectSegment);
 848
 849             *px += step;
 850             if ( *px < 1 )
 851             {
 852                 // this can only happen for the last step of vertical gauge
 853                 rect.height = *px - step - 1;
 854                 *px = 1;
 855             }
 856             else if ( *px > lenTotal - step )
 857             {
 858                 // this can only happen for the last step of horizontal gauge
 859                 rect.width = lenTotal - *px - 1;
 860             }
 861         }
 862     }
 863 }
 864
 865 #endif // wxUSE_GAUGE
 866