// 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
+// Copyright: (c) 1998 Robert Roebling, Markus Holzem
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
-#pragma implementation "dc.h"
+ #pragma implementation "dc.h"
#endif
#include "wx/dc.h"
+#include "gdk/gdk.h"
+#include "gtk/gtk.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
+#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)
+IMPLEMENT_ABSTRACT_CLASS(wxDC, wxDCBase)
-wxDC::wxDC(void)
+wxDC::wxDC()
{
- 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_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;
-}
+ m_ok = FALSE;
-wxDC::~wxDC(void)
-{
-}
+ m_mm_to_pix_x = 1.0;
+ m_mm_to_pix_y = 1.0;
-bool wxDC::Ok(void) const
-{
- wxASSERT_MSG( m_ok, "invalid display context" );
- return m_ok;
-}
+ m_needComputeScaleX = FALSE; /* not used yet */
+ m_needComputeScaleY = FALSE; /* not used yet */
-void wxDC::DrawArc( long WXUNUSED(x1), long WXUNUSED(y1), long WXUNUSED(x2), long WXUNUSED(y2),
- double WXUNUSED(xc), double WXUNUSED(yc) )
-{
-}
+ m_logicalFunction = wxCOPY;
-void wxDC::DrawIcon( const wxIcon &WXUNUSED(icon), long WXUNUSED(x), long WXUNUSED(y), bool WXUNUSED(useMask) )
-{
+ m_pen = *wxBLACK_PEN;
+ m_font = *wxNORMAL_FONT;
+ m_brush = *wxTRANSPARENT_BRUSH;
}
-void wxDC::DrawPoint( wxPoint& point )
-{
- DrawPoint( point.x, point.y );
-}
-
-void wxDC::DrawPolygon( wxList *list, long xoffset, long yoffset, int fillStyle )
+void wxDC::DoSetClippingRegion( long x, long y, long width, long height )
{
- 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;
+ m_clipping = TRUE;
+ m_clipX1 = x;
+ m_clipY1 = y;
+ m_clipX2 = x + width;
+ m_clipY2 = y + height;
}
-void wxDC::DrawLines( wxList *list, long xoffset, long yoffset )
+void wxDC::DestroyClippingRegion()
{
- 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;
+ m_clipping = FALSE;
}
-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( 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;
-}
+// ---------------------------------------------------------------------------
+// get DC capabilities
+// ---------------------------------------------------------------------------
-void wxDC::DestroyClippingRegion(void)
+void wxDC::DoGetSize( int* width, int* height ) const
{
- m_clipping = FALSE;
+ if (width) *width = m_maxX-m_minX;
+ if (height) *height = m_maxY-m_minY;
}
-void wxDC::GetClippingBox( long *x, long *y, long *width, long *height ) const
+void wxDC::DoGetSizeMM( int* width, int* 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;
+ int w = 0;
+ int h = 0;
+ GetSize( &w, &h );
+ if (width) *width = int( double(w) / (m_scaleX*m_mm_to_pix_x) );
+ if (height) *height = int( double(h) / (m_scaleY*m_mm_to_pix_y) );
}
-void wxDC::GetSize( int* width, int* height ) const
+// Resolution in pixels per logical inch
+wxSize wxDC::GetPPI() const
{
- *width = m_maxX-m_minX;
- *height = m_maxY-m_minY;
+ // TODO (should probably be pure virtual)
+ return wxSize(0, 0);
}
-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) );
-}
+// ---------------------------------------------------------------------------
+// set various DC parameters
+// ---------------------------------------------------------------------------
-void wxDC::SetTextForeground( const wxColour &col )
+void wxDC::ComputeScaleAndOrigin()
{
- if (!Ok()) return;
- m_textForegroundColour = col;
-}
-
-void wxDC::SetTextBackground( const wxColour &col )
-{
- if (!Ok()) return;
- m_textBackgroundColour = col;
+ m_scaleX = m_logicalScaleX * m_userScaleX;
+ m_scaleY = m_logicalScaleY * m_userScaleY;
}
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;
- }
+ switch (mode)
+ {
+ case wxMM_TWIPS:
+ SetLogicalScale( twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y );
+ break;
+ case wxMM_POINTS:
+ SetLogicalScale( pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y );
+ break;
+ case wxMM_METRIC:
+ SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
+ break;
+ case wxMM_LOMETRIC:
+ SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
+ break;
+ default:
+ case wxMM_TEXT:
+ SetLogicalScale( 1.0, 1.0 );
+ break;
+ }
+ m_mappingMode = mode;
+
+/* we don't do this mega optimisation
+ if (mode != wxMM_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;
+ // allow negative ? -> no
+ m_userScaleX = x;
+ m_userScaleY = y;
+ ComputeScaleAndOrigin();
}
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;
+ // allow negative ?
+ m_logicalScaleX = x;
+ m_logicalScaleY = y;
+ ComputeScaleAndOrigin();
}
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;
+ m_logicalOriginX = x * m_signX; // is this still correct ?
+ m_logicalOriginY = y * m_signY;
+ ComputeScaleAndOrigin();
}
void wxDC::SetDeviceOrigin( long x, long y )
{
- m_deviceOriginX = x;
- m_deviceOriginY = y;
- ComputeScaleAndOrigin();
-}
-
-void wxDC::GetDeviceOrigin( long *x, long *y )
-{
- if (x) *x = m_deviceOriginX;
- if (y) *y = m_deviceOriginY;
+ // only wxPostScripDC has m_signX = -1, we override SetDeviceOrigin there
+ m_deviceOriginX = x;
+ m_deviceOriginY = y;
+ ComputeScaleAndOrigin();
}
void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
{
- m_signX = (xLeftRight ? 1 : -1);
- m_signY = (yBottomUp ? -1 : 1);
- ComputeScaleAndOrigin();
+ // only wxPostScripDC has m_signX = -1, we override SetAxisOrientation there
+ m_signX = (xLeftRight ? 1 : -1);
+ m_signY = (yBottomUp ? -1 : 1);
+ ComputeScaleAndOrigin();
}
-long wxDC::DeviceToLogicalX(long x) const
-{
- return XDEV2LOG(x);
-}
+// ---------------------------------------------------------------------------
+// coordinates transformations
+// ---------------------------------------------------------------------------
-long wxDC::DeviceToLogicalY(long y) const
+long wxDCBase::DeviceToLogicalX(long x) const
{
- return YDEV2LOG(y);
+ return ((wxDC *)this)->XDEV2LOG(x);
}
-long wxDC::DeviceToLogicalXRel(long x) const
+long wxDCBase::DeviceToLogicalY(long y) const
{
- return XDEV2LOGREL(x);
+ return ((wxDC *)this)->YDEV2LOG(y);
}
-long wxDC::DeviceToLogicalYRel(long y) const
+long wxDCBase::DeviceToLogicalXRel(long x) const
{
- return YDEV2LOGREL(y);
+ return ((wxDC *)this)->XDEV2LOGREL(x);
}
-long wxDC::LogicalToDeviceX(long x) const
+long wxDCBase::DeviceToLogicalYRel(long y) const
{
- return XLOG2DEV(x);
+ return ((wxDC *)this)->YDEV2LOGREL(y);
}
-long wxDC::LogicalToDeviceY(long y) const
+long wxDCBase::LogicalToDeviceX(long x) const
{
- return YLOG2DEV(y);
+ return ((wxDC *)this)->XLOG2DEV(x);
}
-long wxDC::LogicalToDeviceXRel(long x) const
+long wxDCBase::LogicalToDeviceY(long y) const
{
- return XLOG2DEVREL(x);
+ return ((wxDC *)this)->YLOG2DEV(y);
}
-long wxDC::LogicalToDeviceYRel(long y) const
-{
- return YLOG2DEVREL(y);
-}
-
-void wxDC::CalcBoundingBox( long x, long y )
+long wxDCBase::LogicalToDeviceXRel(long x) const
{
- 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;
+ return ((wxDC *)this)->XLOG2DEVREL(x);
}
-void wxDC::ComputeScaleAndOrigin(void)
+long wxDCBase::LogicalToDeviceYRel(long y) const
{
- // 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;
-
- // 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);
- }
+ return ((wxDC *)this)->YLOG2DEVREL(y);
}
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