265898fd79
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@991 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
374 lines
8.0 KiB
C++
374 lines
8.0 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: dc.cpp
|
|
// Purpose:
|
|
// Author: Robert Roebling
|
|
// RCS-ID: $Id$
|
|
// Copyright: (c) 1998 Robert Roebling, 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_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)
|
|
{
|
|
}
|
|
|
|
bool wxDC::Ok(void) const
|
|
{
|
|
wxASSERT_MSG( m_ok, "invalid display context" );
|
|
return m_ok;
|
|
}
|
|
|
|
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( 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_deviceOriginX = x;
|
|
m_deviceOriginY = y;
|
|
ComputeScaleAndOrigin();
|
|
}
|
|
|
|
void wxDC::GetDeviceOrigin( long *x, long *y )
|
|
{
|
|
if (x) *x = m_deviceOriginX;
|
|
if (y) *y = m_deviceOriginY;
|
|
}
|
|
|
|
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;
|
|
|
|
// 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
|
|
// Using this code, wxDC will ignore the new settings
|
|
// so it's complete non-sense, Robert Roebling TODO!!
|
|
wxPen* pen = GetPen();
|
|
wxPen tempPen;
|
|
m_pen = tempPen;
|
|
SetPen(pen);
|
|
}
|
|
}
|
|
|