src/generic/renderg.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        generic/renderg.cpp
   3 // Purpose:     generic implementation of wxRendererNative (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/gdicmn.h"
  32 #include "wx/dc.h"
  33
  34 #include "wx/settings.h"
  35
  36 #include "wx/renderer.h"
  37
  38 // ----------------------------------------------------------------------------
  39 // wxRendererGeneric: our wxRendererNative implementation
  40 // ----------------------------------------------------------------------------
  41
  42 class WXDLLEXPORT wxRendererGeneric : public wxRendererNative
  43 {
  44 public:
  45     // draw the header control button (used by wxListCtrl)
  46     virtual void DrawHeaderButton(wxWindow *win,
  47                                   wxDC& dc,
  48                                   const wxRect& rect,
  49                                   int flags = 0);
  50
  51     // draw the expanded/collapsed icon for a tree control item
  52     virtual void DrawTreeItemButton(wxWindow *win,
  53                                     wxDC& dc,
  54                                     const wxRect& rect,
  55                                     int flags = 0);
  56 };
  57
  58 // ============================================================================
  59 // implementation
  60 // ============================================================================
  61
  62 // ----------------------------------------------------------------------------
  63 // wxRendererGeneric creation
  64 // ----------------------------------------------------------------------------
  65
  66 /* static */
  67 wxRendererNative& wxRendererNative::GetGeneric()
  68 {
  69     static wxRendererGeneric s_rendererGeneric;
  70
  71     return s_rendererGeneric;
  72 }
  73
  74 // some platforms have their own renderers
  75 #if !defined(__WXMSW__) && !defined(__WXMAC__) && !defined(__WXGTK__)
  76
  77 /* static */
  78 wxRendererNative& wxRendererNative::Get()
  79 {
  80     return GetGeneric();
  81 }
  82
  83 #endif // platforms using their own renderers
  84
  85 // ----------------------------------------------------------------------------
  86 // wxRendererGeneric drawing functions
  87 // ----------------------------------------------------------------------------
  88
  89 void
  90 wxRendererGeneric::DrawHeaderButton(wxWindow *win,
  91                                     wxDC& dc,
  92                                     const wxRect& rect,
  93                                     int flags)
  94 {
  95     const int CORNER = 1;
  96
  97     const wxCoord x = rect.x,
  98                   y = rect.y,
  99                   w = rect.width,
 100                   h = rect.height;
 101
 102     dc.SetBrush( *wxTRANSPARENT_BRUSH );
 103
 104     dc.SetPen( *wxBLACK_PEN );
 105     dc.DrawLine( x+w-CORNER+1, y, x+w, y+h );  // right (outer)
 106     dc.DrawRectangle( x, y+h, w+1, 1 );        // bottom (outer)
 107
 108     wxPen pen( wxSystemSettings::GetColour( wxSYS_COLOUR_BTNSHADOW ), 1, wxSOLID );
 109
 110     dc.SetPen( pen );
 111     dc.DrawLine( x+w-CORNER, y, x+w-1, y+h );  // right (inner)
 112     dc.DrawRectangle( x+1, y+h-1, w-2, 1 );    // bottom (inner)
 113
 114     dc.SetPen( *wxWHITE_PEN );
 115     dc.DrawRectangle( x, y, w-CORNER+1, 1 );   // top (outer)
 116     dc.DrawRectangle( x, y, 1, h );            // left (outer)
 117     dc.DrawLine( x, y+h-1, x+1, y+h-1 );
 118     dc.DrawLine( x+w-1, y, x+w-1, y+1 );
 119 }
 120
 121 // draw the plus or minus sign
 122 void
 123 wxRendererGeneric::DrawTreeItemButton(wxWindow *win,
 124                                       wxDC& dc,
 125                                       const wxRect& rect,
 126                                       int flags)
 127 {
 128     // white background
 129     dc.SetPen(*wxGREY_PEN);
 130     dc.SetBrush(*wxWHITE_BRUSH);
 131     dc.DrawRectangle(rect.Deflate(1, 2));
 132
 133     // black lines
 134     const wxCoord xMiddle = rect.x + rect.width/2;
 135     const wxCoord yMiddle = rect.y + rect.height/2;
 136
 137     dc.SetPen(*wxBLACK_PEN);
 138     dc.DrawLine(xMiddle - 2, yMiddle, xMiddle + 3, yMiddle);
 139     if ( !(flags & wxCONTROL_EXPANDED) )
 140     {
 141         // turn "-" into "+"
 142         dc.DrawLine(xMiddle, yMiddle - 2, xMiddle, yMiddle + 3);
 143     }
 144 }
 145
 146