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/dc.h"
  14
  15
  16 //-----------------------------------------------------------------------------
  17 // wxDC
  18 //-----------------------------------------------------------------------------
  19
  20 #if wxUSE_NEW_DC
  21 IMPLEMENT_ABSTRACT_CLASS(wxGTKImplDC, wxImplDC)
  22 #else
  23 IMPLEMENT_ABSTRACT_CLASS(wxGTKImplDC, wxDCBase)
  24 #endif
  25
  26 #if wxUSE_NEW_DC
  27 wxGTKImplDC::wxGTKImplDC( wxDC *owner )
  28    : wxImplDC( owner )
  29 #else
  30 wxDC::wxDC()
  31 #endif
  32 {
  33     m_ok = FALSE;
  34
  35     m_pen = *wxBLACK_PEN;
  36     m_font = *wxNORMAL_FONT;
  37     m_brush = *wxWHITE_BRUSH;
  38 }
  39
  40 wxGTKImplDC::~wxGTKImplDC()
  41 {
  42 }
  43
  44 void wxGTKImplDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
  45 {
  46     m_clipping = TRUE;
  47     m_clipX1 = x;
  48     m_clipY1 = y;
  49     m_clipX2 = x + width;
  50     m_clipY2 = y + height;
  51 }
  52
  53 // ---------------------------------------------------------------------------
  54 // get DC capabilities
  55 // ---------------------------------------------------------------------------
  56
  57 void wxGTKImplDC::DoGetSizeMM( int* width, int* height ) const
  58 {
  59     int w = 0;
  60     int h = 0;
  61     GetOwner()->GetSize( &w, &h );
  62     if (width) *width = int( double(w) / (m_userScaleX*m_mm_to_pix_x) );
  63     if (height) *height = int( double(h) / (m_userScaleY*m_mm_to_pix_y) );
  64 }
  65
  66 // Resolution in pixels per logical inch
  67 wxSize wxGTKImplDC::GetPPI() const
  68 {
  69     // TODO (should probably be pure virtual)
  70     return wxSize(0, 0);
  71 }