src/common/dcbase.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dc.cpp
   3 // Purpose:     wxDC Class
   4 // Author:      Brian Macy
   5 // Modified by:
   6 // Created:     05/25/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWindows team
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "dcbase.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24    #include "wx/window.h"
  25 #endif
  26
  27 #ifdef __WXMSW__
  28    #include "wx/msw/private.h"
  29 #endif
  30
  31 #include "wx/dc.h"
  32
  33 void wxDCBase::DoDrawCheckMark(wxCoord x1, wxCoord y1,
  34                                wxCoord width, wxCoord height)
  35 {
  36     wxCHECK_RET( Ok(), wxT("invalid window dc") );
  37
  38     wxCoord x2 = x1 + width,
  39             y2 = y1 + height;
  40
  41     // this is to yield width of 3 for width == height == 10
  42     SetPen(wxPen(GetTextForeground(), (width + height + 1) / 7, wxSOLID));
  43
  44     // we're drawing a scaled version of wx/generic/tick.xpm here
  45     wxCoord x3 = x1 + (4*width) / 10,   // x of the tick bottom
  46             y3 = y1 + height / 2;       // y of the left tick branch
  47     DoDrawLine(x1, y3, x3, y2);
  48     DoDrawLine(x3, y2, x2, y1);
  49
  50     CalcBoundingBox(x1, y1);
  51     CalcBoundingBox(x2, y2);
  52 }
  53
  54 void wxDCBase::DrawLines(const wxList *list, wxCoord xoffset, wxCoord yoffset)
  55 {
  56     int n = list->Number();
  57     wxPoint *points = new wxPoint[n];
  58
  59     int i = 0;
  60     for ( wxNode *node = list->First(); node; node = node->Next(), i++ )
  61     {
  62         wxPoint *point = (wxPoint *)node->Data();
  63         points[i].x = point->x;
  64         points[i].y = point->y;
  65     }
  66
  67     DoDrawLines(n, points, xoffset, yoffset);
  68
  69     delete [] points;
  70 }
  71
  72
  73 void wxDCBase::DrawPolygon(const wxList *list,
  74                            wxCoord xoffset, wxCoord yoffset,
  75                            int fillStyle)
  76 {
  77     int n = list->Number();
  78     wxPoint *points = new wxPoint[n];
  79
  80     int i = 0;
  81     for ( wxNode *node = list->First(); node; node = node->Next(), i++ )
  82     {
  83         wxPoint *point = (wxPoint *)node->Data();
  84         points[i].x = point->x;
  85         points[i].y = point->y;
  86     }
  87
  88     DoDrawPolygon(n, points, xoffset, yoffset, fillStyle);
  89
  90     delete [] points;
  91 }
  92
  93
  94 #if wxUSE_SPLINES
  95
  96 // TODO: this API needs fixing (wxPointList, why (!const) "wxList *"?)
  97 void wxDCBase::DrawSpline(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord x3, wxCoord y3)
  98 {
  99     wxList point_list;
 100
 101     wxPoint *point1 = new wxPoint;
 102     point1->x = x1; point1->y = y1;
 103     point_list.Append((wxObject*)point1);
 104
 105     wxPoint *point2 = new wxPoint;
 106     point2->x = x2; point2->y = y2;
 107     point_list.Append((wxObject*)point2);
 108
 109     wxPoint *point3 = new wxPoint;
 110     point3->x = x3; point3->y = y3;
 111     point_list.Append((wxObject*)point3);
 112
 113     DrawSpline(&point_list);
 114
 115     for( wxNode *node = point_list.First(); node; node = node->Next() )
 116     {
 117         wxPoint *p = (wxPoint *)node->Data();
 118         delete p;
 119     }
 120 }
 121
 122 void wxDCBase::DrawSpline(int n, wxPoint points[])
 123 {
 124     wxList list;
 125     for (int i =0; i < n; i++)
 126     {
 127         list.Append((wxObject*)&points[i]);
 128     }
 129
 130     DrawSpline(&list);
 131 }
 132
 133 #endif // wxUSE_SPLINES