src/motif/dcmemory.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dcmemory.cpp
   3 // Purpose:     wxMemoryDC class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "dcmemory.h"
  14 #endif
  15
  16 #include "wx/dcmemory.h"
  17 #include "wx/settings.h"
  18 #include "wx/utils.h"
  19
  20 #ifdef __VMS__
  21 #pragma message disable nosimpint
  22 #endif
  23 #include <Xm/Xm.h>
  24 #ifdef __VMS__
  25 #pragma message enable nosimpint
  26 #endif
  27
  28 #include "wx/motif/private.h"
  29
  30 //-----------------------------------------------------------------------------
  31 // wxMemoryDC
  32 //-----------------------------------------------------------------------------
  33
  34 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC, wxWindowDC)
  35
  36 wxMemoryDC::wxMemoryDC(void)
  37 {
  38     m_ok = TRUE;
  39     m_display = wxGetDisplay();
  40
  41     Display* display = (Display*) m_display;
  42
  43     XGCValues gcvalues;
  44     gcvalues.foreground = BlackPixel (display, DefaultScreen (display));
  45     gcvalues.background = WhitePixel (display, DefaultScreen (display));
  46     gcvalues.graphics_exposures = False;
  47     gcvalues.line_width = 1;
  48     m_gc = (WXGC) XCreateGC (display, RootWindow (display, DefaultScreen (display)),
  49         GCForeground | GCBackground | GCGraphicsExposures | GCLineWidth,
  50         &gcvalues);
  51
  52     m_backgroundPixel = (int) gcvalues.background;
  53
  54     // Get the current Font so we can set it back later
  55     XGCValues valReturn;
  56     XGetGCValues((Display*) m_display, (GC) m_gc, GCFont, &valReturn);
  57     m_oldFont = (WXFont) valReturn.font;
  58     SetBrush (* wxWHITE_BRUSH);
  59     SetPen (* wxBLACK_PEN);
  60     SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
  61 };
  62
  63 wxMemoryDC::wxMemoryDC( wxDC* dc )
  64 {
  65     m_ok = TRUE;
  66     if (dc && dc->IsKindOf(CLASSINFO(wxWindowDC)))
  67         m_display = ((wxWindowDC*)dc)->GetDisplay();
  68     else
  69         m_display = wxGetDisplay();
  70
  71     Display* display = (Display*) m_display;
  72
  73     XGCValues gcvalues;
  74     gcvalues.foreground = BlackPixel (display, DefaultScreen (display));
  75     gcvalues.background = WhitePixel (display, DefaultScreen (display));
  76     gcvalues.graphics_exposures = False;
  77     gcvalues.line_width = 1;
  78     m_gc = (WXGC) XCreateGC (display, RootWindow (display, DefaultScreen (display)),
  79         GCForeground | GCBackground | GCGraphicsExposures | GCLineWidth,
  80         &gcvalues);
  81
  82     m_backgroundPixel = (int) gcvalues.background;
  83
  84     // Get the current Font so we can set it back later
  85     XGCValues valReturn;
  86     XGetGCValues((Display*) m_display, (GC) m_gc, GCFont, &valReturn);
  87     m_oldFont = (WXFont) valReturn.font;
  88     SetBrush (* wxWHITE_BRUSH);
  89     SetPen (* wxBLACK_PEN);
  90 };
  91
  92 wxMemoryDC::~wxMemoryDC(void)
  93 {
  94 };
  95
  96 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
  97 {
  98     m_bitmap = bitmap;
  99
 100     if (m_gc)
 101         XFreeGC((Display*) m_display, (GC) m_gc);
 102     m_gc = (WXGC) NULL;
 103
 104     if (m_bitmap.Ok() && (bitmap.GetDisplay() == m_display))
 105     {
 106         m_pixmap = m_bitmap.GetPixmap();
 107         Display* display = (Display*) m_display;
 108
 109         XGCValues gcvalues;
 110         gcvalues.foreground = BlackPixel (display, DefaultScreen (display));
 111         gcvalues.background = WhitePixel (display, DefaultScreen (display));
 112         gcvalues.graphics_exposures = False;
 113         gcvalues.line_width = 1;
 114         m_gc = (WXGC) XCreateGC (display, RootWindow (display, DefaultScreen (display)),
 115             GCForeground | GCBackground | GCGraphicsExposures | GCLineWidth,
 116             &gcvalues);
 117
 118         m_backgroundPixel = (int) gcvalues.background;
 119
 120         // Get the current Font so we can set it back later
 121         XGCValues valReturn;
 122         XGetGCValues((Display*) m_display, (GC) m_gc, GCFont, &valReturn);
 123         m_oldFont = (WXFont) valReturn.font;
 124
 125         bool oldOpt = GetOptimization();
 126         SetOptimization(FALSE);
 127
 128         SetBrush (* wxWHITE_BRUSH);
 129         SetPen (* wxBLACK_PEN);
 130
 131         SetOptimization(oldOpt);
 132
 133         m_ok = TRUE;
 134     }
 135     else
 136     {
 137         m_ok = FALSE;
 138         m_pixmap = (WXPixmap) 0;
 139     };
 140 };
 141
 142 void wxMemoryDC::DoGetSize( int *width, int *height ) const
 143 {
 144     if (m_bitmap.Ok())
 145     {
 146         if (width) (*width) = m_bitmap.GetWidth();
 147         if (height) (*height) = m_bitmap.GetHeight();
 148     }
 149     else
 150     {
 151         if (width) (*width) = 0;
 152         if (height) (*height) = 0;
 153     };
 154 };
 155
 156