src/gtk/dc.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dc.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/gtk/dc.h"
  14
  15 //-----------------------------------------------------------------------------
  16 // wxGTKDCImpl
  17 //-----------------------------------------------------------------------------
  18
  19 IMPLEMENT_ABSTRACT_CLASS(wxGTKDCImpl, wxDCImpl)
  20
  21 wxGTKDCImpl::wxGTKDCImpl( wxDC *owner )
  22    : wxDCImpl( owner )
  23 {
  24     m_ok = FALSE;
  25
  26     m_pen = *wxBLACK_PEN;
  27     m_font = *wxNORMAL_FONT;
  28     m_brush = *wxWHITE_BRUSH;
  29 }
  30
  31 wxGTKDCImpl::~wxGTKDCImpl()
  32 {
  33 }
  34
  35 void wxGTKDCImpl::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
  36 {
  37     m_clipping = TRUE;
  38     m_clipX1 = x;
  39     m_clipY1 = y;
  40     m_clipX2 = x + width;
  41     m_clipY2 = y + height;
  42 }
  43
  44 // ---------------------------------------------------------------------------
  45 // get DC capabilities
  46 // ---------------------------------------------------------------------------
  47
  48 void wxGTKDCImpl::DoGetSizeMM( int* width, int* height ) const
  49 {
  50     int w = 0;
  51     int h = 0;
  52     GetOwner()->GetSize( &w, &h );
  53     if (width) *width = int( double(w) / (m_userScaleX*m_mm_to_pix_x) );
  54     if (height) *height = int( double(h) / (m_userScaleY*m_mm_to_pix_y) );
  55 }
  56
  57 // Resolution in pixels per logical inch
  58 wxSize wxGTKDCImpl::GetPPI() const
  59 {
  60     // TODO (should probably be pure virtual)
  61     return wxSize(0, 0);
  62 }