src/generic/renderg.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        generic/renderg.cpp
   3 // Purpose:     generic implementation of wxRendererBase (for any platform)
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     20.07.2003
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2003 Vadim Zeitlin <vadim@wxwindows.org>
   9 // License:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // for compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/string.h"
  29 #endif //WX_PRECOMP
  30
  31 #include "wx/renderer.h"
  32
  33 // ----------------------------------------------------------------------------
  34 // wxRendererGeneric: our wxRendererBase implementation
  35 // ----------------------------------------------------------------------------
  36
  37 class WXDLLEXPORT wxRendererGeneric : public wxRendererBase
  38 {
  39 public:
  40     // draw the header control button (used by wxListCtrl)
  41     virtual void DrawHeaderButton(wxWindow *win,
  42                                   wxDC& dc,
  43                                   const wxRect& rect,
  44                                   int flags = 0);
  45
  46     // draw the expanded/collapsed icon for a tree control item
  47     virtual void DrawTreeItemButton(wxWindow *win,
  48                                     wxDC& dc,
  49                                     const wxRect& rect,
  50                                     int flags = 0);
  51 };
  52
  53 // ============================================================================
  54 // implementation
  55 // ============================================================================
  56
  57 // ----------------------------------------------------------------------------
  58 // wxRendererGeneric creation
  59 // ----------------------------------------------------------------------------
  60
  61 /* static */
  62 wxRendererNative *wxRendererGeneric::GetGeneric()
  63 {
  64     static wxRendererGeneric s_rendererGeneric;
  65
  66     return s_rendererGeneric;
  67 }
  68
  69 // some platforms have their own renderers
  70 #if !defined(__WXMSW__) && !defined(__WXMAC__) && !defined(__WXGTK__)
  71
  72 /* static */
  73 wxRendererNative& wxRendererGeneric::Get()
  74 {
  75     return GetGeneric();
  76 }
  77
  78 #endif // platforms using their own renderers
  79
  80 // ----------------------------------------------------------------------------
  81 // wxRendererGeneric drawing functions
  82 // ----------------------------------------------------------------------------
  83
  84 void
  85 wxRendererGeneric::DrawHeaderButton(wxWindow *win,
  86                                     wxDC& dc,
  87                                     const wxRect& rect,
  88                                     int flags)
  89 {
  90     const int m_corner = 1;
  91
  92     dc->SetBrush( *wxTRANSPARENT_BRUSH );
  93
  94     dc->SetPen( *wxBLACK_PEN );
  95     dc->DrawLine( x+w-m_corner+1, y, x+w, y+h );  // right (outer)
  96     dc->DrawRectangle( x, y+h, w+1, 1 );          // bottom (outer)
  97
  98     wxPen pen( wxSystemSettings::GetColour( wxSYS_COLOUR_BTNSHADOW ), 1, wxSOLID );
  99
 100     dc->SetPen( pen );
 101     dc->DrawLine( x+w-m_corner, y, x+w-1, y+h );  // right (inner)
 102     dc->DrawRectangle( x+1, y+h-1, w-2, 1 );      // bottom (inner)
 103
 104     dc->SetPen( *wxWHITE_PEN );
 105     dc->DrawRectangle( x, y, w-m_corner+1, 1 );   // top (outer)
 106     dc->DrawRectangle( x, y, 1, h );              // left (outer)
 107     dc->DrawLine( x, y+h-1, x+1, y+h-1 );
 108     dc->DrawLine( x+w-1, y, x+w-1, y+1 );
 109 }
 110
 111 // draw the plus or minus sign
 112 void
 113 wxRendererGeneric::DrawTreeItemButton(wxWindow *win,
 114                                       wxDC& dc,
 115                                       const wxRect& rect,
 116                                       int flags)
 117 {
 118     // white background
 119     dc.SetPen(*wxGREY_PEN);
 120     dc.SetBrush(*wxWHITE_BRUSH);
 121     dc.DrawRectangle(rect.Deflate(1, 2));
 122
 123     // black lines
 124     const wxCoord xMiddle = rect.x + rect.width/2;
 125     const wxCoord yMiddle = rect.y + rect.height/2;
 126
 127     dc.SetPen(*wxBLACK_PEN);
 128     dc.DrawLine(xMiddle - 2, yMiddle, xMiddle + 3, yMiddle);
 129     if ( !item->IsExpanded() )
 130     {
 131         // turn "-" into "+"
 132         dc.DrawLine(xMiddle, yMiddle - 2, xMiddle, yMiddle + 3);
 133     }
 134 }
 135
 136