--- /dev/null
+/////////////////////////////////////////////////////////////////////////////
+// Name: dc.cpp
+// Purpose:
+// Author: Robert Roebling
+// Created: 01/02/97
+// RCS-ID: $Id$
+// Copyright: (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+
+#ifdef __GNUG__
+#pragma implementation "dc.h"
+#endif
+
+#include "wx/dc.h"
+
+//-----------------------------------------------------------------------------
+// constants
+//-----------------------------------------------------------------------------
+
+#define mm2inches 0.0393700787402
+#define inches2mm 25.4
+#define mm2twips 56.6929133859
+#define twips2mm 0.0176388888889
+#define mm2pt 2.83464566929
+#define pt2mm 0.352777777778
+
+//-----------------------------------------------------------------------------
+// wxDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_ABSTRACT_CLASS(wxDC,wxObject)
+
+wxDC::wxDC(void)
+{
+ m_ok = FALSE;
+ m_optimize = FALSE;
+ m_autoSetting = FALSE;
+ m_colour = TRUE;
+ m_clipping = FALSE;
+
+ m_mm_to_pix_x = 1.0;
+ m_mm_to_pix_y = 1.0;
+
+ m_logicalOriginX = 0;
+ m_logicalOriginY = 0;
+ m_deviceOriginX = 0;
+ m_deviceOriginY = 0;
+ m_internalDeviceOriginX = 0;
+ m_internalDeviceOriginY = 0;
+ m_externalDeviceOriginX = 0;
+ m_externalDeviceOriginY = 0;
+
+ m_logicalScaleX = 1.0;
+ m_logicalScaleY = 1.0;
+ m_userScaleX = 1.0;
+ m_userScaleY = 1.0;
+ m_scaleX = 1.0;
+ m_scaleY = 1.0;
+
+ m_mappingMode = MM_TEXT;
+ m_needComputeScaleX = FALSE;
+ m_needComputeScaleY = FALSE;
+
+ m_signX = 1; // default x-axis left to right
+ m_signY = 1; // default y-axis top down
+
+ m_maxX = m_maxY = -100000;
+ m_minY = m_minY = 100000;
+
+ m_logicalFunction = wxCOPY;
+// m_textAlignment = wxALIGN_TOP_LEFT;
+ m_backgroundMode = wxTRANSPARENT;
+
+ m_textForegroundColour = *wxBLACK;
+ m_textBackgroundColour = *wxWHITE;
+ m_pen = *wxBLACK_PEN;
+ m_font = *wxNORMAL_FONT;
+ m_brush = *wxTRANSPARENT_BRUSH;
+ m_backgroundBrush = *wxWHITE_BRUSH;
+
+// m_palette = wxAPP_COLOURMAP;
+};
+
+wxDC::~wxDC(void)
+{
+};
+
+void wxDC::DrawArc( long WXUNUSED(x1), long WXUNUSED(y1), long WXUNUSED(x2), long WXUNUSED(y2),
+ double WXUNUSED(xc), double WXUNUSED(yc) )
+{
+};
+
+void wxDC::DrawIcon( const wxIcon &WXUNUSED(icon), long WXUNUSED(x), long WXUNUSED(y), bool WXUNUSED(useMask) )
+{
+};
+
+void wxDC::DrawPoint( wxPoint& point )
+{
+ DrawPoint( point.x, point.y );
+};
+
+void wxDC::DrawPolygon( wxList *list, long xoffset, long yoffset, int fillStyle )
+{
+ int n = list->Number();
+ wxPoint *points = new wxPoint[n];
+
+ int i = 0;
+ for( wxNode *node = list->First(); node; node = node->Next() )
+ {
+ wxPoint *point = (wxPoint *)node->Data();
+ points[i].x = point->x;
+ points[i++].y = point->y;
+ };
+ DrawPolygon( n, points, xoffset, yoffset, fillStyle );
+ delete[] points;
+};
+
+void wxDC::DrawLines( wxList *list, long xoffset, long yoffset )
+{
+ int n = list->Number();
+ wxPoint *points = new wxPoint[n];
+
+ int i = 0;
+ for( wxNode *node = list->First(); node; node = node->Next() )
+ {
+ wxPoint *point = (wxPoint *)node->Data();
+ points[i].x = point->x;
+ points[i++].y = point->y;
+ };
+ DrawLines( n, points, xoffset, yoffset );
+ delete []points;
+};
+
+void wxDC::DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 )
+{
+ wxList list;
+ list.Append( (wxObject*)new wxPoint(x1, y1) );
+ list.Append( (wxObject*)new wxPoint(x2, y2) );
+ list.Append( (wxObject*)new wxPoint(x3, y3) );
+ DrawSpline(&list);
+ wxNode *node = list.First();
+ while (node)
+ {
+ wxPoint *p = (wxPoint*)node->Data();
+ delete p;
+ node = node->Next();
+ };
+};
+
+void wxDC::DrawSpline( wxList *points )
+{
+ DrawOpenSpline( points );
+};
+
+void wxDC::DrawSpline( int n, wxPoint points[] )
+{
+ wxList list;
+ for (int i = 0; i < n; i++) list.Append( (wxObject*)&points[i] );
+ DrawSpline( &list );
+};
+
+void wxDC::SetClippingRegion( long x, long y, long width, long height )
+{
+ m_clipping = TRUE;
+ m_clipX1 = x;
+ m_clipY1 = y;
+ m_clipX2 = x + width;
+ m_clipY2 = y + height;
+};
+
+void wxDC::DestroyClippingRegion(void)
+{
+ m_clipping = FALSE;
+};
+
+void wxDC::GetClippingBox( long *x, long *y, long *width, long *height ) const
+{
+ if (m_clipping)
+ {
+ if (x) *x = m_clipX1;
+ if (y) *y = m_clipY1;
+ if (width) *width = (m_clipX2 - m_clipX1);
+ if (height) *height = (m_clipY2 - m_clipY1);
+ }
+ else
+ *x = *y = *width = *height = 0;
+};
+
+void wxDC::GetSize( int* width, int* height ) const
+{
+ *width = m_maxX-m_minX;
+ *height = m_maxY-m_minY;
+};
+
+void wxDC::GetSizeMM( long* width, long* height ) const
+{
+ int w = 0;
+ int h = 0;
+ GetSize( &w, &h );
+ *width = long( double(w) / (m_scaleX*m_mm_to_pix_x) );
+ *height = long( double(h) / (m_scaleY*m_mm_to_pix_y) );
+};
+
+void wxDC::SetTextForeground( const wxColour &col )
+{
+ if (!Ok()) return;
+ m_textForegroundColour = col;
+};
+
+void wxDC::SetTextBackground( const wxColour &col )
+{
+ if (!Ok()) return;
+ m_textBackgroundColour = col;
+};
+
+void wxDC::SetMapMode( int mode )
+{
+ switch (mode)
+ {
+ case MM_TWIPS:
+ SetLogicalScale( twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y );
+ break;
+ case MM_POINTS:
+ SetLogicalScale( pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y );
+ break;
+ case MM_METRIC:
+ SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
+ break;
+ case MM_LOMETRIC:
+ SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
+ break;
+ default:
+ case MM_TEXT:
+ SetLogicalScale( 1.0, 1.0 );
+ break;
+ };
+ if (mode != MM_TEXT)
+ {
+ m_needComputeScaleX = TRUE;
+ m_needComputeScaleY = TRUE;
+ };
+};
+
+void wxDC::SetUserScale( double x, double y )
+{
+ // allow negative ? -> no
+ m_userScaleX = x;
+ m_userScaleY = y;
+ ComputeScaleAndOrigin();
+};
+
+void wxDC::GetUserScale( double *x, double *y )
+{
+ if (x) *x = m_userScaleX;
+ if (y) *y = m_userScaleY;
+};
+
+void wxDC::SetLogicalScale( double x, double y )
+{
+ // allow negative ?
+ m_logicalScaleX = x;
+ m_logicalScaleY = y;
+ ComputeScaleAndOrigin();
+};
+
+void wxDC::GetLogicalScale( double *x, double *y )
+{
+ if (x) *x = m_logicalScaleX;
+ if (y) *y = m_logicalScaleY;
+};
+
+void wxDC::SetLogicalOrigin( long x, long y )
+{
+ m_logicalOriginX = x * m_signX; // is this still correct ?
+ m_logicalOriginY = y * m_signY;
+ ComputeScaleAndOrigin();
+};
+
+void wxDC::GetLogicalOrigin( long *x, long *y )
+{
+ if (x) *x = m_logicalOriginX;
+ if (y) *y = m_logicalOriginY;
+};
+
+void wxDC::SetDeviceOrigin( long x, long y )
+{
+ m_externalDeviceOriginX = x;
+ m_externalDeviceOriginY = y;
+ ComputeScaleAndOrigin();
+};
+
+void wxDC::GetDeviceOrigin( long *x, long *y )
+{
+// if (x) *x = m_externalDeviceOriginX;
+// if (y) *y = m_externalDeviceOriginY;
+ if (x) *x = m_deviceOriginX;
+ if (y) *y = m_deviceOriginY;
+};
+
+void wxDC::SetInternalDeviceOrigin( long x, long y )
+{
+ m_internalDeviceOriginX = x;
+ m_internalDeviceOriginY = y;
+ ComputeScaleAndOrigin();
+};
+
+void wxDC::GetInternalDeviceOrigin( long *x, long *y )
+{
+ if (x) *x = m_internalDeviceOriginX;
+ if (y) *y = m_internalDeviceOriginY;
+};
+
+void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
+{
+ m_signX = (xLeftRight ? 1 : -1);
+ m_signY = (yBottomUp ? -1 : 1);
+ ComputeScaleAndOrigin();
+};
+
+long wxDC::DeviceToLogicalX(long x) const
+{
+ return XDEV2LOG(x);
+};
+
+long wxDC::DeviceToLogicalY(long y) const
+{
+ return YDEV2LOG(y);
+};
+
+long wxDC::DeviceToLogicalXRel(long x) const
+{
+ return XDEV2LOGREL(x);
+};
+
+long wxDC::DeviceToLogicalYRel(long y) const
+{
+ return YDEV2LOGREL(y);
+};
+
+long wxDC::LogicalToDeviceX(long x) const
+{
+ return XLOG2DEV(x);
+};
+
+long wxDC::LogicalToDeviceY(long y) const
+{
+ return YLOG2DEV(y);
+};
+
+long wxDC::LogicalToDeviceXRel(long x) const
+{
+ return XLOG2DEVREL(x);
+};
+
+long wxDC::LogicalToDeviceYRel(long y) const
+{
+ return YLOG2DEVREL(y);
+};
+
+void wxDC::CalcBoundingBox( long x, long y )
+{
+ if (x < m_minX) m_minX = x;
+ if (y < m_minY) m_minY = y;
+ if (x > m_maxX) m_maxX = x;
+ if (y > m_maxY) m_maxY = y;
+};
+
+void wxDC::ComputeScaleAndOrigin(void)
+{
+ // CMB: copy scale to see if it changes
+ double origScaleX = m_scaleX;
+ double origScaleY = m_scaleY;
+
+ m_scaleX = m_logicalScaleX * m_userScaleX;
+ m_scaleY = m_logicalScaleY * m_userScaleY;
+
+ m_deviceOriginX = m_internalDeviceOriginX + m_externalDeviceOriginX;
+ m_deviceOriginY = m_internalDeviceOriginY + m_externalDeviceOriginY;
+
+ // CMB: if scale has changed call SetPen to recalulate the line width
+ if (m_scaleX != origScaleX || m_scaleY != origScaleY)
+ {
+ // this is a bit artificial, but we need to force wxDC to think
+ // the pen has changed
+ wxPen* pen = GetPen();
+ wxPen tempPen;
+ m_pen = tempPen;
+ SetPen(pen);
+ }
+};
+
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