/////////////////////////////////////////////////////////////////////////////
// Name: svg.cpp
// Purpose: SVG plot
// Author: Chris Elliott
// Modified by: JP Charras (dec 2006)
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
// For compilers that support precompilation, includes "wx/wx.h".
#include <wx/wxprec.h>
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include <wx/wx.h>
#endif
#if wxCHECK_VERSION( 2, 9, 0 )
// Do nothing, because wxWidgets 3 supports the SVG format
// previously, was a contribution library, not included in wxWidgets base
#else
#include <dcsvg.h>
#include <wx/image.h>
#include <macros.h>
#define wxSVG_DEBUG false
// or true to see the calls being executed
#define newline wxString( wxT( "\n" ) )
#define space wxString( wxT( " " ) )
#define semicolon wxString( wxT( ";" ) )
#ifdef __BORLANDC__
#pragma warn -rch
#pragma warn -ccc
#endif
/* some define not included in early wxWidget versions: */
#ifndef twips2mm
#define twips2mm 0.0176388888889
#endif
#ifndef pt2mm
#define pt2mm 0.352777777778
#endif
static inline double DegToRad( double deg )
{
return (deg * M_PI) / 180.0;
}
wxString wxColStr( wxColour c )
{
unsigned char r, g, b;
r = c.Red();
g = c.Green();
b = c.Blue();
// possible Unicode bug here
wxString s = wxDecToHex( r ) + wxDecToHex( g ) + wxDecToHex( b );
return s;
}
wxString wxBrushString( wxColour c, int style )
{
wxString s = wxT( "fill:#" ) + wxColStr( c ) + semicolon + space;
switch( style )
{
case wxSOLID:
s = s + wxT( "fill-opacity:1.0; " );
break;
case wxTRANSPARENT:
s = s + wxT( "fill-opacity:0.0; " );
break;
default:
wxASSERT_MSG( false, wxT( "wxSVGFileDC::Requested Brush Style not available" ) );
}
s = s + newline;
return s;
}
/***********************************************************************/
void wxSVGFileDC::Init( wxString f, int Width, int Height, float dpi )
/***********************************************************************/
/* set up things first wxDCBase does all this?
*/
{
m_width = Width;
m_height = Height;
m_clipping = false;
m_OK = true;
m_mm_to_pix_x = dpi / 25.4;
m_mm_to_pix_y = dpi / 25.4;
m_signX = m_signY = 1;
m_userScaleX = m_userScaleY =
m_deviceOriginX = m_deviceOriginY = 0;
m_OriginX = m_OriginY = 0;
m_logicalOriginX = m_logicalOriginY = 0;
m_logicalScaleX = m_logicalScaleY = 0;
m_scaleX = m_scaleY = 1.0;
m_logicalFunction = wxCOPY;
m_backgroundMode = wxTRANSPARENT;
m_mappingMode = wxMM_TEXT;
m_backgroundBrush = *wxTRANSPARENT_BRUSH;
m_textForegroundColour = *wxBLACK;
m_textBackgroundColour = *wxWHITE;
m_colour = wxColourDisplay();
m_pen = *wxBLACK_PEN;
m_font = *wxNORMAL_FONT;
m_brush = *wxWHITE_BRUSH;
m_graphics_changed = true;
////////////////////code here
m_outfile = new wxFileOutputStream( f );
m_OK = m_outfile->Ok();
if( m_OK )
{
m_filename = f;
m_sub_images = 0;
wxString s;
s = wxT( "<?xml version=\"1.0\" standalone=\"no\"?>" ); s = s + newline;
write( s );
s = wxT( "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" " ) + newline;
write( s );
s = wxT( "\"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\"> " ) + newline;
write( s );
s.Printf( wxT( "<svg\n" ) );
write( s );
s.Printf( wxT( " xmlns=\"http://www.w3.org/2000/svg\"\n" ) );
write( s );
s.Printf( wxT( " version=\"1.1\"\n" ) );
write( s );
s.Printf( wxT( " width=\"%gin\" height=\"%gin\" viewBox=\"0 0 %d %d \"\n" ),
double (Width) / dpi, double (Height) / dpi, Width, Height );
write( s );
s.Printf( wxT( ">\n" ) );
write( s );
s = wxT( " <title>SVG Picture created as " ) + wxFileNameFromPath( f ) +
wxT( " </title>" ) + newline;
write( s );
s = wxString( wxT( " <desc>Picture generated by wxSVG " ) ) + wxSVGVersion + wxT(
" </desc>" ) + newline;
write( s );
s = wxT( " <g style=\"fill:black; stroke:black; stroke-width:1\">" ) + newline;
write( s );
}
}
// constructors
wxSVGFileDC::wxSVGFileDC( wxString f )
{
// quarter 640x480 screen display at 72 dpi
Init( f, 320, 240, 72.0 );
}
wxSVGFileDC::wxSVGFileDC( wxString f, int Width, int Height )
{
Init( f, Width, Height, 72.0 );
}
wxSVGFileDC::wxSVGFileDC( wxString f, int Width, int Height, float dpi )
{
Init( f, Width, Height, dpi );
}
wxSVGFileDC::~wxSVGFileDC()
{
wxString s = wxT( "</g> \n</svg> \n" );
write( s );
delete m_outfile;
}
//////////////////////////////////////////////////////////////////////////////////////////
void wxSVGFileDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
{
if( m_graphics_changed )
NewGraphics();
wxString s;
s.Printf( wxT( "<path d=\"M%d %d L%d %d\" /> \n" ), x1, y1, x2, y2 );
if( m_OK )
{
write( s );
}
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::DrawLine Call executed" ) );
CalcBoundingBox( x1, y1 );
CalcBoundingBox( x2, y2 );
return;
}
void wxSVGFileDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
{
for( int i = 1; i < n; i++ )
{
DoDrawLine( points[i - 1].x + xoffset, points[i - 1].y + yoffset,
points[ i ].x + xoffset, points[ i ].y + yoffset );
}
}
void wxSVGFileDC::DoDrawPoint( wxCoord x1, wxCoord y1 )
{
wxString s;
if( m_graphics_changed )
NewGraphics();
s = wxT( "<g style = \"stroke-linecap:round;\" > " ) + newline;
write( s );
DrawLine( x1, y1, x1, y1 );
s = wxT( "</g>" );
write( s );
}
void wxSVGFileDC::DoDrawCheckMark( wxCoord x1, wxCoord y1, wxCoord width, wxCoord height )
{
wxDCBase::DoDrawCheckMark( x1, y1, width, height );
}
void wxSVGFileDC::DoDrawText( const wxString& text, wxCoord x1, wxCoord y1 )
{
DoDrawRotatedText( text, x1, y1, 0.0 );
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::DrawText Call executed" ) );
}
void wxSVGFileDC::DoDrawRotatedText( const wxString& sText, wxCoord x, wxCoord y, double angle )
{
//known bug; if the font is drawn in a scaled DC, it will not behave exactly as wxMSW
if( m_graphics_changed )
NewGraphics();
wxString s, sTmp;
// calculate bounding box
wxCoord w, h, desc;
DoGetTextExtent( sText, &w, &h, &desc );
double rad = DegToRad( angle );
// wxT("upper left") and wxT("upper right")
CalcBoundingBox( x, y );
CalcBoundingBox( (wxCoord) ( x + w * cos( rad ) ), (wxCoord) ( y - h * sin( rad ) ) );
// wxT("bottom left") and wxT("bottom right")
x += (wxCoord) ( h * sin( rad ) );
y += (wxCoord) ( h * cos( rad ) );
CalcBoundingBox( x, y );
CalcBoundingBox( (wxCoord) ( x + h * sin( rad ) ), (wxCoord) ( y + h * cos( rad ) ) );
if( m_backgroundMode == wxSOLID )
{
// draw background first
// just like DoDrawRectangle except we pass the text color to it and set the border to a 1 pixel wide text background
wxASSERT_MSG( !wxSVG_DEBUG,
wxT( "wxSVGFileDC::Draw Rotated Text Call plotting text background" ) );
sTmp.Printf( wxT(
" <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" " ), x, y + desc -
h, w, h );
s = sTmp + wxT( "style=\"fill:#" ) + wxColStr( m_textBackgroundColour ) + wxT( "; " );
s = s + wxT( "stroke-width:1; stroke:#" ) + wxColStr( m_textBackgroundColour ) + wxT( "; " );
sTmp.Printf( wxT( "\" transform=\"rotate( %.2g %d %d ) \">" ), -angle, x, y );
s = s + sTmp + newline;
write( s );
}
//now do the text itself
s.Printf( wxT( " <text x=\"%d\" y=\"%d\" " ), x, y );
sTmp = m_font.GetFaceName();
if( sTmp.Len() > 0 )
s = s + wxT( "style=\"font-family:" ) + sTmp + wxT( "; " );
else
s = s + wxT( "style=\" " );
wxString fontweights[3] = { wxT( "normal" ), wxT( "lighter" ), wxT( "bold" ) };
s = s + wxT( "font-weight:" ) + fontweights[m_font.GetWeight() - wxNORMAL] + semicolon + space;
wxString fontstyles[5] = {
wxT( "normal" ), wxT( "style error" ), wxT( "style error" ), wxT(
"italic" ), wxT( "oblique" )
};
s = s + wxT( "font-style:" ) + fontstyles[m_font.GetStyle() - wxNORMAL] + semicolon + space;
sTmp.Printf( wxT( "font-size:%dpt; fill:#" ), m_font.GetPointSize() );
s = s + sTmp;
s = s + wxColStr( m_textForegroundColour ) + wxT( "; stroke:#" ) + wxColStr(
m_textForegroundColour ) + wxT( "; " );
sTmp.Printf( wxT( "stroke-width:0;\" transform=\"rotate( %.2g %d %d ) \" >" ), -angle, x, y );
s = s + sTmp + sText + wxT( "</text> " ) + newline;
if( m_OK )
{
write( s );
}
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::DrawRotatedText Call executed" ) );
}
void wxSVGFileDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
{
DoDrawRoundedRectangle( x, y, width, height, 0 );
}
void wxSVGFileDC::DoDrawRoundedRectangle( wxCoord x,
wxCoord y,
wxCoord width,
wxCoord height,
double radius )
{
if( m_graphics_changed )
NewGraphics();
wxString s;
s.Printf( wxT( " <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" rx=\"%.2g\" " ),
x, y, width, height, radius );
s = s + wxT( " /> " ) + newline;
write( s );
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::DoDrawRoundedRectangle Call executed" ) );
CalcBoundingBox( x, y );
CalcBoundingBox( x + width, y + height );
}
void wxSVGFileDC::DoDrawPolygon( int n,
wxPoint points[],
wxCoord xoffset,
wxCoord yoffset,
int fillStyle )
{
if( m_graphics_changed )
NewGraphics();
wxString s, sTmp;
s = wxT( "<polygon style=\"" );
if( fillStyle == wxODDEVEN_RULE )
s = s + wxT( "fill-rule:evenodd; " );
else
s = s + wxT( "fill-rule:nonzero; " );
s = s + wxT( "\" \npoints=\"" );
for( int i = 0; i < n; i++ )
{
sTmp.Printf( wxT( "%d,%d" ), points[i].x + xoffset, points[i].y + yoffset );
s = s + sTmp + newline;
CalcBoundingBox( points[i].x + xoffset, points[i].y + yoffset );
}
s = s + wxT( "\" /> " );
s = s + newline;
write( s );
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::DoDrawPolygon Call executed" ) );
}
void wxSVGFileDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
{
if( m_graphics_changed )
NewGraphics();
int rh = height / 2;
int rw = width / 2;
wxString s;
s.Printf( wxT( "<ellipse cx=\"%d\" cy=\"%d\" rx=\"%d\" ry=\"%d\" " ), x + rw, y + rh, rw, rh );
s = s + wxT( " /> " ) + newline;
write( s );
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::DoDrawEllipse Call executed" ) );
CalcBoundingBox( x, y );
CalcBoundingBox( x + width, y + height );
}
void wxSVGFileDC::DoDrawArc( wxCoord x1,
wxCoord y1,
wxCoord x2,
wxCoord y2,
wxCoord xc,
wxCoord yc )
{
/* Draws an arc of a circle, centred on (xc, yc), with starting point
* (x1, y1) and ending at (x2, y2). The current pen is used for the outline
* and the current brush for filling the shape.
*
* The arc is drawn in an anticlockwise direction from the start point to
* the end point. */
if( m_graphics_changed )
NewGraphics();
wxString s;
// we need the radius of the circle which has two estimates
double r1 = sqrt( double ( (x1 - xc) * (x1 - xc) ) + double ( (y1 - yc) * (y1 - yc) ) );
double r2 = sqrt( double ( (x2 - xc) * (x2 - xc) ) + double ( (y2 - yc) * (y2 - yc) ) );
wxASSERT_MSG( (fabs( r2 - r1 ) <= 3),
wxT( "wxSVGFileDC::DoDrawArc Error in getting radii of circle" ) );
if( fabs( r2 - r1 ) > 3 ) //pixels
{
s = wxT( "<!--- wxSVGFileDC::DoDrawArc Error in getting radii of circle --> \n" );
write( s );
}
double theta1 = atan2( (double) (yc - y1), (double) (x1 - xc) );
if( theta1 < 0 )
theta1 = theta1 + M_PI * 2;
double theta2 = atan2( (double) (yc - y2), (double) (x2 - xc) );
if( theta2 < 0 )
theta2 = theta2 + M_PI * 2;
if( theta2 < theta1 )
theta2 = theta2 + M_PI * 2;
int fArc; // flag for large or small arc 0 means less than 180 degrees
if( fabs( theta2 - theta1 ) > M_PI )
fArc = 1;else
fArc = 0;
int fSweep;
if( (theta2 - theta1) > 0 )
fSweep = 0;else
fSweep = 1;
float Axis_rotation = 0.0;
// Draw arc as pie:
// s.Printf ( wxT("<path d=\"M%d %d A%.2g %.2g 0.0 %d %d %d %d L%d %d z "),
// the z means close the path and fill (usefull to draw a pie)
// x1, y1, r1, r2, fArc, fSweep, x2, y2, xc ,yc );
// Draw a single arc:
s.Printf( wxT( "<path d=\"M%d %d A%.2g %.2g %g %d %d %d %d" ),
x1, y1, r1, r2,
Axis_rotation,
fArc, fSweep, x2, y2 );
s = s + wxT( " \" /> " ) + newline;
if( m_OK )
{
write( s );
}
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::DoDrawArc Call executed" ) );
}
void wxSVGFileDC::DoDrawEllipticArc( wxCoord x,
wxCoord y,
wxCoord w,
wxCoord h,
double sa,
double ea )
{
/*
* Draws an arc of an ellipse. The current pen is used for drawing the arc
* and the current brush is used for drawing the pie. This function is
* currently only available for X window and PostScript device contexts.
*
* x and y specify the x and y coordinates of the upper-left corner of the
* rectangle that contains the ellipse.
*
* width and height specify the width and height of the rectangle that
* contains the ellipse.
*
* start and end specify the start and end of the arc relative to the
* three-o'clock position from the center of the rectangle. Angles are
* specified in degrees (360 is a complete circle). Positive values mean
* counter-clockwise motion. If start is equal to end, a complete ellipse
* will be drawn. */
//known bug: SVG draws with the current pen along the radii, but this does not happen in wxMSW
if( m_graphics_changed )
NewGraphics();
wxString s;
//radius
double rx = w / 2;
double ry = h / 2;
// center
double xc = x + rx;
double yc = y + ry;
double xs, ys, xe, ye;
xs = xc + rx* cos( DegToRad (sa) );
xe = xc + rx* cos( DegToRad (ea) );
ys = yc - ry* sin( DegToRad (sa) );
ye = yc - ry* sin( DegToRad (ea) );
///now same as circle arc...
double theta1 = atan2( ys - yc, xs - xc );
double theta2 = atan2( ye - yc, xe - xc );
int fArc; // flag for large or small arc 0 means less than 180 degrees
if( fabs( theta2 - theta1 ) > M_PI )
fArc = 1;else
fArc = 0;
int fSweep;
if( (theta2 - theta1) > 0 )
fSweep = 0;else
fSweep = 1;
float Axis_rotation = 0.0;
// Draw a single arc:
s.Printf( wxT( "<path d=\"M%d,%d A%d,%d %g %d %d %d,%d" ),
int (xs), int (ys),
int (rx), int (ry),
Axis_rotation,
fArc, fSweep, int (xe), int (ye) );
s = s + wxT( " \" /> " ) + newline;
if( m_OK )
{
write( s );
}
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::DoDrawEllipticArc Call executed" ) );
}
void wxSVGFileDC::DoGetTextExtent( const wxString& string,
wxCoord* w,
wxCoord* h,
wxCoord* descent,
wxCoord* externalLeading,
wxFont* font ) const
{
wxScreenDC sDC;
sDC.SetFont( m_font );
if( font != NULL )
sDC.SetFont( *font );
sDC.GetTextExtent( string, w, h, descent, externalLeading );
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::GetTextExtent Call executed" ) );
}
wxCoord wxSVGFileDC::GetCharHeight() const
{
wxScreenDC sDC;
sDC.SetFont( m_font );
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::GetCharHeight Call executing" ) );
return sDC.GetCharHeight();
}
wxCoord wxSVGFileDC::GetCharWidth() const
{
wxScreenDC sDC;
sDC.SetFont( m_font );
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::GetCharWidth Call executing" ) );
return sDC.GetCharWidth();
}
/// Set Functions /////////////////////////////////////////////////////////////////
void wxSVGFileDC::SetBackground( const wxBrush& brush )
{
m_backgroundBrush = brush;
return;
}
void wxSVGFileDC::SetBackgroundMode( int mode )
{
m_backgroundMode = mode;
return;
}
void wxSVGFileDC::SetBrush( const wxBrush& brush )
{
m_brush = brush;
m_graphics_changed = true;
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::SetBrush Call executed" ) );
}
void wxSVGFileDC::SetPen( const wxPen& pen )
{
// width, color, ends, joins : currently implemented
// dashes, stipple : not implemented
m_pen = pen;
m_graphics_changed = true;
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::SetPen Call executed" ) );
}
void wxSVGFileDC::NewGraphics()
{
int w = m_pen.GetWidth();
wxColour c = m_pen.GetColour();
wxString s, sBrush, sPenCap, sPenJoin, sPenStyle, sLast, sWarn;
sBrush = wxT( "</g>\n<g style=\"" ) + wxBrushString( m_brush.GetColour(), m_brush.GetStyle() )
+ wxT( " stroke:#" ) + wxColStr( c ) + wxT( "; " );
switch( m_pen.GetCap() )
{
case wxCAP_PROJECTING:
sPenCap = wxT( "stroke-linecap:square; " );
break;
case wxCAP_BUTT:
sPenCap = wxT( "stroke-linecap:butt; " );
break;
case wxCAP_ROUND:
default:
sPenCap = wxT( "stroke-linecap:round; " );
}
;
switch( m_pen.GetJoin() )
{
case wxJOIN_BEVEL:
sPenJoin = wxT( "stroke-linejoin:bevel; " );
break;
case wxJOIN_MITER:
sPenJoin = wxT( "stroke-linejoin:miter; " );
break;
case wxJOIN_ROUND:
default:
sPenJoin = wxT( "stroke-linejoin:round; " );
}
;
switch( m_pen.GetStyle() )
{
case wxSOLID:
sPenStyle = wxT( "stroke-opacity:1.0; stroke-opacity:1.0; " );
break;
case wxTRANSPARENT:
sPenStyle = wxT( "stroke-opacity:0.0; stroke-opacity:0.0; " );
break;
default:
wxASSERT_MSG( false,
wxT( "wxSVGFileDC::SetPen Call called to set a Style which is not available" )
);
sWarn = sWarn + wxT(
"<!--- wxSVGFileDC::SetPen Call called to set a Style which is not available --> \n" );
}
sLast.Printf( wxT(
"stroke-width:%d\" \n transform=\"translate(%.2g %.2g) scale(%.2g %.2g)\">" ),
w, m_OriginX, m_OriginY, m_scaleX, m_scaleY );
s = sBrush + sPenCap + sPenJoin + sPenStyle + sLast + newline + sWarn;
write( s );
m_graphics_changed = false;
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::NewGraphics Call executed" ) );
}
void wxSVGFileDC::SetFont( const wxFont& font )
{
m_font = font;
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::SetFont Call executed" ) );
}
void wxSVGFileDC::ComputeScaleAndOrigin()
{
m_scaleX = m_logicalScaleX * m_userScaleX;
m_scaleY = m_logicalScaleY * m_userScaleY;
m_OriginX = m_logicalOriginX * m_logicalScaleX + m_deviceOriginX;
m_OriginY = m_logicalOriginY * m_logicalScaleY + m_deviceOriginY;
m_graphics_changed = true;
}
int wxSVGFileDC::GetMapMode()
{
return m_mappingMode;
}
void wxSVGFileDC::SetMapMode( int mode )
{
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 wxSVGFileDC::GetUserScale( double* x, double* y ) const
{
*x = m_userScaleX;
*y = m_userScaleY;
}
void wxSVGFileDC::SetUserScale( double x, double y )
{
// allow negative ? -> no
m_userScaleX = x;
m_userScaleY = y;
ComputeScaleAndOrigin();
}
void wxSVGFileDC::SetLogicalScale( double x, double y )
{
// allow negative ?
m_logicalScaleX = x;
m_logicalScaleY = y;
ComputeScaleAndOrigin();
}
void wxSVGFileDC::SetLogicalOrigin( wxCoord x, wxCoord y )
{
// is this still correct ?
m_logicalOriginX = x * m_signX;
m_logicalOriginY = y * m_signY;
ComputeScaleAndOrigin();
}
void wxSVGFileDC::SetDeviceOrigin( wxCoord x, wxCoord y )
{
// only wxPostScripDC has m_signX = -1,
m_deviceOriginX = x;
m_deviceOriginY = y;
ComputeScaleAndOrigin();
}
void wxSVGFileDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
{
// only wxPostScripDC has m_signX = -1,
m_signX = (xLeftRight ? 1 : -1);
m_signY = (yBottomUp ? -1 : 1);
ComputeScaleAndOrigin();
}
// export a bitmap as a raster image in png
bool wxSVGFileDC::DoBlit( wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
wxDC* source, wxCoord xsrc, wxCoord ysrc,
int logicalFunc /*= wxCOPY*/, bool useMask /*= false*/,
wxCoord /*xsrcMask = -1*/, wxCoord /*ysrcMask = -1*/ )
{
if( logicalFunc != wxCOPY )
{
wxASSERT_MSG( false,
wxT( "wxSVGFileDC::DoBlit Call requested nonCopy mode; this is not possible" )
);
return false;
}
if( useMask != false )
{
wxASSERT_MSG( false,
wxT( "wxSVGFileDC::DoBlit Call requested False mask ; this is not possible" )
);
return false;
}
wxBitmap myBitmap( width, height );
wxMemoryDC memDC;
memDC.SelectObject( myBitmap );
memDC.Blit( 0, 0, width, height, source, xsrc, ysrc );
memDC.SelectObject( wxNullBitmap );
DoDrawBitmap( myBitmap, xdest, ydest );
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::DoBlit Call executed" ) );
return false;
}
void wxSVGFileDC::DoDrawIcon( const class wxIcon& myIcon, wxCoord x, wxCoord y )
{
wxBitmap myBitmap( myIcon.GetWidth(), myIcon.GetHeight() );
wxMemoryDC memDC;
memDC.SelectObject( myBitmap );
memDC.DrawIcon( myIcon, 0, 0 );
memDC.SelectObject( wxNullBitmap );
DoDrawBitmap( myBitmap, x, y );
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::DoDrawIcon Call executed" ) );
return;
}
void wxSVGFileDC::DoDrawBitmap( const class wxBitmap& bmp,
wxCoord x,
wxCoord y,
bool bTransparent /*=0*/ )
{
if( m_graphics_changed )
NewGraphics();
wxString sTmp, s, sPNG;
wxImage::AddHandler( new wxPNGHandler );
// create suitable file name
sTmp.Printf( wxT( "_image%d.png" ), m_sub_images );
sPNG = m_filename.BeforeLast( wxT( '.' ) ) + sTmp;
while( wxFile::Exists( sPNG ) )
{
m_sub_images++;
sTmp.Printf( wxT( "_image%d.png" ), m_sub_images );
sPNG = m_filename.BeforeLast( wxT( '.' ) ) + sTmp;
}
//create copy of bitmap (wxGTK doesn't like saving a constant bitmap)
wxBitmap myBitmap = bmp;
//save it
bool bPNG_OK = myBitmap.SaveFile( sPNG, wxBITMAP_TYPE_PNG );
// refrence the bitmap from the SVG doc
int w = myBitmap.GetWidth();
int h = myBitmap.GetHeight();
sTmp.Printf( wxT( " <image x=\"%d\" y=\"%d\" width=\"%dpx\" height=\"%dpx\" " ), x, y, w, h );
s = s + sTmp;
sTmp.Printf( wxT( " xlink:href=\"%s\"> \n" ), GetChars( sPNG ) );
s = s + sTmp + wxT( "<title>Image from wxSVG</title> </image>" ) + newline;
if( m_OK && bPNG_OK )
{
write( s );
}
m_OK = m_outfile->Ok() && bPNG_OK;
wxASSERT_MSG( !wxSVG_DEBUG, wxT( "wxSVGFileDC::DoDrawBitmap Call executed" ) );
return;
}
// ---------------------------------------------------------------------------
// coordinates transformations
// ---------------------------------------------------------------------------
wxCoord wxSVGFileDC::DeviceToLogicalX( wxCoord x ) const
{
return XDEV2LOG( x );
}
wxCoord wxSVGFileDC::DeviceToLogicalY( wxCoord y ) const
{
return YDEV2LOG( y );
}
wxCoord wxSVGFileDC::DeviceToLogicalXRel( wxCoord x ) const
{
return XDEV2LOGREL( x );
}
wxCoord wxSVGFileDC::DeviceToLogicalYRel( wxCoord y ) const
{
return YDEV2LOGREL( y );
}
wxCoord wxSVGFileDC::LogicalToDeviceX( wxCoord x ) const
{
return XLOG2DEV( x );
}
wxCoord wxSVGFileDC::LogicalToDeviceY( wxCoord y ) const
{
return YLOG2DEV( y );
}
wxCoord wxSVGFileDC::LogicalToDeviceXRel( wxCoord x ) const
{
return XLOG2DEVREL( x );
}
wxCoord wxSVGFileDC::LogicalToDeviceYRel( wxCoord y ) const
{
return YLOG2DEVREL( y );
}
void wxSVGFileDC::write( const wxString& s )
{
const wxWX2MBbuf buf = s.mb_str( wxConvUTF8 );
m_outfile->Write( buf, strlen( (const char*) buf ) );
m_OK = m_outfile->Ok();
}
#ifdef __BORLANDC__
#pragma warn .rch
#pragma warn .ccc
#endif
#endif // wxCHECK_VERSION