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kicad-source/common/plotters/SVG_plotter.cpp
jean-pierre charras 88ffcec4b5 Plotters (especially DXF) add more precision when plotting arcs (and others) 
- in DXF coordinates were using 6 digits for coordinate mantissa: this is not
enough for coord in inches. Now use 16 digits
- Arc( VECTOR2I& aCentre, EDA_ANGLE& aStartAngle, EDA_ANGLE& aEndAngle, ...)
was using integers for coord. This creates significant errors for start point
and end points of the arc. Now the center is given in double, and its position
is calculated from angle end points (and radius) to do not generate a position error
for these end points (previously the error could be 20 ... 50 nm)
Fixes #15056
https://gitlab.com/kicad/code/kicad/-/issues/15056
2023-07-06 18:09:38 +02:00

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2020 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 1992-2022 KiCad Developers, see AUTHORS.txt for contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
/* Some info on basic items SVG format, used here:
* The root element of all SVG files is the <svg> element.
*
* The <g> element is used to group SVG shapes together.
* Once grouped you can transform the whole group of shapes as if it was a single shape.
* This is an advantage compared to a nested <svg> element
* which cannot be the target of transformation by itself.
*
* The <rect> element represents a rectangle.
* Using this element you can draw rectangles of various width, height,
* with different stroke (outline) and fill colors, with sharp or rounded corners etc.
*
* <svg xmlns="http://www.w3.org/2000/svg"
* xmlns:xlink="http://www.w3.org/1999/xlink">
*
* <rect x="10" y="10" height="100" width="100"
* style="stroke:#006600; fill: #00cc00"/>
*
* </svg>
*
* The <circle> element is used to draw circles.
* <circle cx="40" cy="40" r="24" style="stroke:#006600; fill:#00cc00"/>
*
* The <ellipse> element is used to draw ellipses.
* An ellipse is a circle that does not have equal height and width.
* Its radius in the x and y directions are different, in other words.
* <ellipse cx="40" cy="40" rx="30" ry="15"
* style="stroke:#006600; fill:#00cc00"/>
*
* The <line> element is used to draw lines.
*
* <line x1="0" y1="10" x2="0" y2="100" style="stroke:#006600;"/>
* <line x1="10" y1="10" x2="100" y2="100" style="stroke:#006600;"/>
*
* The <polyline> element is used to draw multiple connected lines
* Here is a simple example:
*
* <polyline points="0,0 30,0 15,30" style="stroke:#006600;"/>
*
* The <polygon> element is used to draw with multiple (3 or more) sides / edges.
* Here is a simple example:
*
* <polygon points="0,0 50,0 25,50" style="stroke:#660000; fill:#cc3333;"/>
*
* The <path> element is used to draw advanced shapes combined from lines and arcs,
* with or without fill.
* It is probably the most advanced and versatile SVG shape of them all.
* It is probably also the hardest element to master.
* <path d="M50,50
* A30,30 0 0,1 35,20
* L100,100
* M110,110
* L100,0"
* style="stroke:#660000; fill:none;"/>
*
* Draw an elliptic arc: it is one of basic path command:
* <path d="M(startx,starty) A(radiusx,radiusy)
* rotation-axe-x
* flag_arc_large,flag_sweep endx,endy">
* flag_arc_large: 0 = small arc > 180 deg, 1 = large arc > 180 deg
* flag_sweep : 0 = CCW, 1 = CW
* The center of ellipse is automatically calculated.
*/
#include <base64.h>
#include <eda_shape.h>
#include <string_utils.h>
#include <font/font.h>
#include <macros.h>
#include <trigo.h>
#include <cstdint>
#include <wx/mstream.h>
#include <plotters/plotters_pslike.h>
// Note:
// During tests, we (JPC) found issues when the coordinates used 6 digits in mantissa
// especially for stroke-width using very small (but not null) values < 0.00001 mm
// So to avoid this king of issue, we are using 4 digits in mantissa
// The resolution (m_precision ) is 0.1 micron, that looks enougt for a SVG file
/**
* Translates '<' to "&lt;", '>' to "&gt;" and so on, according to the spec:
* http://www.w3.org/TR/2000/WD-xml-c14n-20000119.html#charescaping
* May be moved to a library if needed generally, but not expecting that.
*/
static wxString XmlEsc( const wxString& aStr, bool isAttribute = false )
{
wxString escaped;
escaped.reserve( aStr.length() );
for( wxString::const_iterator it = aStr.begin(); it != aStr.end(); ++it )
{
const wxChar c = *it;
switch( c )
{
case wxS( '<' ):
escaped.append( wxS( "&lt;" ) );
break;
case wxS( '>' ):
escaped.append( wxS( "&gt;" ) );
break;
case wxS( '&' ):
escaped.append( wxS( "&amp;" ) );
break;
case wxS( '\r' ):
escaped.append( wxS( "&#xD;" ) );
break;
default:
if( isAttribute )
{
switch( c )
{
case wxS( '"' ):
escaped.append( wxS( "&quot;" ) );
break;
case wxS( '\t' ):
escaped.append( wxS( "&#x9;" ) );
break;
case wxS( '\n' ):
escaped.append( wxS( "&#xA;" ));
break;
default:
escaped.append(c);
}
}
else
escaped.append(c);
}
}
return escaped;
}
SVG_PLOTTER::SVG_PLOTTER()
{
m_graphics_changed = true;
SetTextMode( PLOT_TEXT_MODE::STROKE );
m_fillMode = FILL_T::NO_FILL; // or FILLED_SHAPE or FILLED_WITH_BG_BODYCOLOR
m_pen_rgb_color = 0; // current color value (black)
m_brush_rgb_color = 0; // current color value (black)
m_brush_alpha = 1.0;
m_dashed = PLOT_DASH_TYPE::SOLID;
m_useInch = false; // millimeters are always the svg unit
m_precision = 4; // default: 4 digits in mantissa.
}
void SVG_PLOTTER::SetViewport( const VECTOR2I& aOffset, double aIusPerDecimil,
double aScale, bool aMirror )
{
m_plotMirror = aMirror;
m_yaxisReversed = true; // unlike other plotters, SVG has Y axis reversed
m_plotOffset = aOffset;
m_plotScale = aScale;
m_IUsPerDecimil = aIusPerDecimil;
// Compute the paper size in IUs. for historical reasons the page size is in mils
m_paperSize = m_pageInfo.GetSizeMils();
m_paperSize.x *= 10.0 * aIusPerDecimil;
m_paperSize.y *= 10.0 * aIusPerDecimil;
// gives now a default value to iuPerDeviceUnit (because the units of the caller is now known)
double iusPerMM = m_IUsPerDecimil / 2.54 * 1000;
m_iuPerDeviceUnit = 1 / iusPerMM;
SetSvgCoordinatesFormat( 4 );
}
void SVG_PLOTTER::SetSvgCoordinatesFormat( unsigned aPrecision )
{
// Only number of digits in mantissa are adjustable.
// SVG units are always mm
m_precision = aPrecision;
}
void SVG_PLOTTER::SetColor( const COLOR4D& color )
{
PSLIKE_PLOTTER::SetColor( color );
if( m_graphics_changed )
setSVGPlotStyle( GetCurrentLineWidth() );
}
void SVG_PLOTTER::setFillMode( FILL_T fill )
{
if( m_fillMode != fill )
{
m_graphics_changed = true;
m_fillMode = fill;
}
}
void SVG_PLOTTER::setSVGPlotStyle( int aLineWidth, bool aIsGroup, const std::string& aExtraStyle )
{
if( aIsGroup )
fputs( "</g>\n<g ", m_outputFile );
// output the background fill color
fprintf( m_outputFile, "style=\"fill:#%6.6lX; ", m_brush_rgb_color );
switch( m_fillMode )
{
case FILL_T::NO_FILL:
fputs( "fill-opacity:0.0; ", m_outputFile );
break;
case FILL_T::FILLED_SHAPE:
case FILL_T::FILLED_WITH_BG_BODYCOLOR:
case FILL_T::FILLED_WITH_COLOR:
fprintf( m_outputFile, "fill-opacity:%.*f; ", m_precision, m_brush_alpha );
break;
}
double pen_w = userToDeviceSize( aLineWidth );
if( pen_w < 0.0 ) // Ensure pen width validity
pen_w = 0.0;
// Fix a strange issue found in Inkscape: aWidth < 100 nm create issues on degrouping objects
// So we use only 4 digits in mantissa for stroke-width.
// TODO: perhaps used only 3 or 4 digits in mantissa for all values in mm, because some
// issues were previously reported reported when using nm as integer units
fprintf( m_outputFile, "\nstroke:#%6.6lX; stroke-width:%.*f; stroke-opacity:1; \n",
m_pen_rgb_color, m_precision, pen_w );
fputs( "stroke-linecap:round; stroke-linejoin:round;", m_outputFile );
//set any extra attributes for non-solid lines
switch( m_dashed )
{
case PLOT_DASH_TYPE::DASH:
fprintf( m_outputFile, "stroke-dasharray:%.*f,%.*f;",
m_precision, GetDashMarkLenIU( aLineWidth ),
m_precision, GetDashGapLenIU( aLineWidth ) );
break;
case PLOT_DASH_TYPE::DOT:
fprintf( m_outputFile, "stroke-dasharray:%f,%f;",
GetDotMarkLenIU( aLineWidth ), GetDashGapLenIU( aLineWidth ) );
break;
case PLOT_DASH_TYPE::DASHDOT:
fprintf( m_outputFile, "stroke-dasharray:%f,%f,%f,%f;",
GetDashMarkLenIU( aLineWidth ), GetDashGapLenIU( aLineWidth ),
GetDotMarkLenIU( aLineWidth ), GetDashGapLenIU( aLineWidth ) );
break;
case PLOT_DASH_TYPE::DASHDOTDOT:
fprintf( m_outputFile, "stroke-dasharray:%f,%f,%f,%f,%f,%f;",
GetDashMarkLenIU( aLineWidth ), GetDashGapLenIU( aLineWidth ),
GetDotMarkLenIU( aLineWidth ), GetDashGapLenIU( aLineWidth ),
GetDotMarkLenIU( aLineWidth ), GetDashGapLenIU( aLineWidth ) );
break;
case PLOT_DASH_TYPE::DEFAULT:
case PLOT_DASH_TYPE::SOLID:
default:
//do nothing
break;
}
if( aExtraStyle.length() )
fputs( aExtraStyle.c_str(), m_outputFile );
fputs( "\"", m_outputFile );
if( aIsGroup )
{
fputs( ">", m_outputFile );
m_graphics_changed = false;
}
fputs( "\n", m_outputFile );
}
void SVG_PLOTTER::SetCurrentLineWidth( int aWidth, void* aData )
{
if( aWidth == DO_NOT_SET_LINE_WIDTH )
return;
else if( aWidth == USE_DEFAULT_LINE_WIDTH )
aWidth = m_renderSettings->GetDefaultPenWidth();
// Note: aWidth == 0 is fine: used for filled shapes with no outline thickness
wxASSERT_MSG( aWidth >= 0, "Plotter called to set negative pen width" );
if( aWidth != m_currentPenWidth )
{
m_graphics_changed = true;
m_currentPenWidth = aWidth;
}
if( m_graphics_changed )
setSVGPlotStyle( aWidth );
}
void SVG_PLOTTER::StartBlock( void* aData )
{
std::string* idstr = reinterpret_cast<std::string*>( aData );
fputs( "<g ", m_outputFile );
if( idstr )
fprintf( m_outputFile, "id=\"%s\"", idstr->c_str() );
fprintf( m_outputFile, ">\n" );
}
void SVG_PLOTTER::EndBlock( void* aData )
{
fprintf( m_outputFile, "</g>\n" );
m_graphics_changed = true;
}
void SVG_PLOTTER::emitSetRGBColor( double r, double g, double b, double a )
{
int red = (int) ( 255.0 * r );
int green = (int) ( 255.0 * g );
int blue = (int) ( 255.0 * b );
long rgb_color = (red << 16) | (green << 8) | blue;
if( m_pen_rgb_color != rgb_color )
{
m_graphics_changed = true;
m_pen_rgb_color = rgb_color;
// Currently, use the same color for brush and pen (i.e. to draw and fill a contour).
m_brush_rgb_color = rgb_color;
m_brush_alpha = a;
}
}
void SVG_PLOTTER::SetDash( int aLineWidth, PLOT_DASH_TYPE aLineStyle )
{
if( m_dashed != aLineStyle )
{
m_graphics_changed = true;
m_dashed = aLineStyle;
}
if( m_graphics_changed )
setSVGPlotStyle( aLineWidth );
}
void SVG_PLOTTER::Rect( const VECTOR2I& p1, const VECTOR2I& p2, FILL_T fill, int width )
{
BOX2I rect( p1, VECTOR2I( p2.x - p1.x, p2.y - p1.y ) );
rect.Normalize();
VECTOR2D org_dev = userToDeviceCoordinates( rect.GetOrigin() );
VECTOR2D end_dev = userToDeviceCoordinates( rect.GetEnd() );
VECTOR2D size_dev = end_dev - org_dev;
// Ensure size of rect in device coordinates is > 0
// I don't know if this is a SVG issue or a Inkscape issue, but
// Inkscape has problems with negative or null values for width and/or height, so avoid them
BOX2D rect_dev( org_dev, size_dev );
rect_dev.Normalize();
setFillMode( fill );
SetCurrentLineWidth( width );
// Rectangles having a 0 size value for height or width are just not drawn on Inkscape,
// so use a line when happens.
if( rect_dev.GetSize().x == 0.0 || rect_dev.GetSize().y == 0.0 ) // Draw a line
{
fprintf( m_outputFile,
"<line x1=\"%.*f\" y1=\"%.*f\" x2=\"%.*f\" y2=\"%.*f\" />\n",
m_precision, rect_dev.GetPosition().x, m_precision, rect_dev.GetPosition().y,
m_precision, rect_dev.GetEnd().x, m_precision, rect_dev.GetEnd().y );
}
else
{
fprintf( m_outputFile,
"<rect x=\"%f\" y=\"%f\" width=\"%f\" height=\"%f\" rx=\"%f\" />\n",
rect_dev.GetPosition().x, rect_dev.GetPosition().y,
rect_dev.GetSize().x, rect_dev.GetSize().y,
0.0 /* radius of rounded corners */ );
}
}
void SVG_PLOTTER::Circle( const VECTOR2I& pos, int diametre, FILL_T fill, int width )
{
VECTOR2D pos_dev = userToDeviceCoordinates( pos );
double radius = userToDeviceSize( diametre / 2.0 );
setFillMode( fill );
SetCurrentLineWidth( width );
// If diameter is less than width, switch to filled mode
if( fill == FILL_T::NO_FILL && diametre < width )
{
setFillMode( FILL_T::FILLED_SHAPE );
SetCurrentLineWidth( 0 );
radius = userToDeviceSize( ( diametre / 2.0 ) + ( width / 2.0 ) );
}
fprintf( m_outputFile,
"<circle cx=\"%.*f\" cy=\"%.*f\" r=\"%.*f\" /> \n",
m_precision, pos_dev.x, m_precision, pos_dev.y, m_precision, radius );
}
void SVG_PLOTTER::Arc( const VECTOR2D& aCenter, const EDA_ANGLE& aStartAngle,
const EDA_ANGLE& aEndAngle, double aRadius, FILL_T aFill, int aWidth )
{
/* Draws an arc of a circle, centered 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( aRadius <= 0 )
{
Circle( aCenter, aWidth, FILL_T::FILLED_SHAPE, 0 );
return;
}
EDA_ANGLE startAngle( aStartAngle );
EDA_ANGLE endAngle( aEndAngle );
if( startAngle > endAngle )
std::swap( startAngle, endAngle );
// Calculate start point.
VECTOR2D centre_device = userToDeviceCoordinates( aCenter );
double radius_device = userToDeviceSize( aRadius );
if( m_plotMirror )
{
if( m_mirrorIsHorizontal )
{
std::swap( startAngle, endAngle );
startAngle = ANGLE_180 - startAngle;
endAngle = ANGLE_180 - endAngle;
}
else
{
startAngle = -startAngle;
endAngle = -endAngle;
}
}
VECTOR2D start;
start.x = radius_device;
RotatePoint( start, startAngle );
VECTOR2D end;
end.x = radius_device;
RotatePoint( end, endAngle );
start += centre_device;
end += centre_device;
double theta1 = startAngle.AsRadians();
if( theta1 < 0 )
theta1 = theta1 + M_PI * 2;
double theta2 = endAngle.AsRadians();
if( theta2 < 0 )
theta2 = theta2 + M_PI * 2;
if( theta2 < theta1 )
theta2 = theta2 + M_PI * 2;
int flg_arc = 0; // flag for large or small arc. 0 means less than 180 degrees
if( fabs( theta2 - theta1 ) > M_PI )
flg_arc = 1;
int flg_sweep = 0; // flag for sweep always 0
// Draw a single arc: an arc is one of 3 curve commands (2 other are 2 bezier curves)
// params are start point, radius1, radius2, X axe rotation,
// flag arc size (0 = small arc > 180 deg, 1 = large arc > 180 deg),
// sweep arc ( 0 = CCW, 1 = CW),
// end point
if( aFill != FILL_T::NO_FILL )
{
// Filled arcs (in Eeschema) consist of the pie wedge and a stroke only on the arc
// This needs to be drawn in two steps.
setFillMode( aFill );
SetCurrentLineWidth( 0 );
fprintf( m_outputFile, "<path d=\"M%.*f %.*f A%.*f %.*f 0.0 %d %d %.*f %.*f L %.*f %.*f Z\" />\n",
m_precision, start.x, m_precision, start.y,
m_precision, radius_device, m_precision, radius_device,
flg_arc, flg_sweep,
m_precision, end.x, m_precision, end.y,
m_precision, centre_device.x, m_precision, centre_device.y );
}
setFillMode( FILL_T::NO_FILL );
SetCurrentLineWidth( aWidth );
fprintf( m_outputFile, "<path d=\"M%.*f %.*f A%.*f %.*f 0.0 %d %d %.*f %.*f\" />\n",
m_precision, start.x, m_precision, start.y,
m_precision, radius_device, m_precision, radius_device,
flg_arc, flg_sweep,
m_precision, end.x, m_precision, end.y );
}
void SVG_PLOTTER::BezierCurve( const VECTOR2I& aStart, const VECTOR2I& aControl1,
const VECTOR2I& aControl2, const VECTOR2I& aEnd,
int aTolerance, int aLineThickness )
{
#if 1
setFillMode( FILL_T::NO_FILL );
SetCurrentLineWidth( aLineThickness );
VECTOR2D start = userToDeviceCoordinates( aStart );
VECTOR2D ctrl1 = userToDeviceCoordinates( aControl1 );
VECTOR2D ctrl2 = userToDeviceCoordinates( aControl2 );
VECTOR2D end = userToDeviceCoordinates( aEnd );
// Generate a cubic curve: start point and 3 other control points.
fprintf( m_outputFile, "<path d=\"M%.*f,%.*f C%.*f,%.*f %.*f,%.*f %.*f,%.*f\" />\n",
m_precision, start.x, m_precision, start.y,
m_precision, ctrl1.x, m_precision, ctrl1.y,
m_precision, ctrl2.x, m_precision, ctrl2.y,
m_precision, end.x, m_precision, end.y );
#else
PLOTTER::BezierCurve( aStart, aControl1, aControl2, aEnd, aTolerance, aLineThickness );
#endif
}
void SVG_PLOTTER::PlotPoly( const std::vector<VECTOR2I>& aCornerList, FILL_T aFill,
int aWidth, void* aData )
{
if( aCornerList.size() <= 1 )
return;
setFillMode( aFill );
SetCurrentLineWidth( aWidth );
fprintf( m_outputFile, "<path ");
switch( aFill )
{
case FILL_T::NO_FILL:
setSVGPlotStyle( aWidth, false, "fill:none" );
break;
case FILL_T::FILLED_WITH_BG_BODYCOLOR:
case FILL_T::FILLED_SHAPE:
case FILL_T::FILLED_WITH_COLOR:
setSVGPlotStyle( aWidth, false, "fill-rule:evenodd;" );
break;
}
VECTOR2D pos = userToDeviceCoordinates( aCornerList[0] );
fprintf( m_outputFile, "d=\"M %.*f,%.*f\n", m_precision, pos.x, m_precision, pos.y );
for( unsigned ii = 1; ii < aCornerList.size() - 1; ii++ )
{
pos = userToDeviceCoordinates( aCornerList[ii] );
fprintf( m_outputFile, "%.*f,%.*f\n", m_precision, pos.x, m_precision, pos.y );
}
// If the corner list ends where it begins, then close the poly
if( aCornerList.front() == aCornerList.back() )
{
fprintf( m_outputFile, "Z\" /> \n" );
}
else
{
pos = userToDeviceCoordinates( aCornerList.back() );
fprintf( m_outputFile, "%.*f,%.*f\n\" /> \n", m_precision, pos.x, m_precision, pos.y );
}
}
void SVG_PLOTTER::PlotImage( const wxImage& aImage, const VECTOR2I& aPos, double aScaleFactor )
{
VECTOR2I pix_size( aImage.GetWidth(), aImage.GetHeight() );
// Requested size (in IUs)
VECTOR2D drawsize( aScaleFactor * pix_size.x, aScaleFactor * pix_size.y );
// calculate the bitmap start position
VECTOR2I start( aPos.x - drawsize.x / 2, aPos.y - drawsize.y / 2 );
// Rectangles having a 0 size value for height or width are just not drawn on Inkscape,
// so use a line when happens.
if( drawsize.x == 0.0 || drawsize.y == 0.0 ) // Draw a line
{
PLOTTER::PlotImage( aImage, aPos, aScaleFactor );
}
else
{
wxMemoryOutputStream img_stream;
if( m_colorMode )
aImage.SaveFile( img_stream, wxBITMAP_TYPE_PNG );
else // Plot in B&W
{
wxImage image = aImage.ConvertToGreyscale();
image.SaveFile( img_stream, wxBITMAP_TYPE_PNG );
}
size_t input_len = img_stream.GetOutputStreamBuffer()->GetBufferSize();
std::vector<uint8_t> buffer( input_len );
std::vector<uint8_t> encoded;
img_stream.CopyTo( buffer.data(), buffer.size() );
base64::encode( buffer, encoded );
fprintf( m_outputFile,
"<image x=\"%f\" y=\"%f\" xlink:href=\"data:image/png;base64,",
userToDeviceSize( start.x ), userToDeviceSize( start.y ) );
for( size_t i = 0; i < encoded.size(); i++ )
{
fprintf( m_outputFile, "%c", static_cast<char>( encoded[i] ) );
if( ( i % 64 ) == 63 )
fprintf( m_outputFile, "\n" );
}
fprintf( m_outputFile, "\"\npreserveAspectRatio=\"none\" width=\"%.*f\" height=\"%.*f\" />",
m_precision, userToDeviceSize( drawsize.x ), m_precision, userToDeviceSize( drawsize.y ) );
}
}
void SVG_PLOTTER::PenTo( const VECTOR2I& pos, char plume )
{
if( plume == 'Z' )
{
if( m_penState != 'Z' )
{
fputs( "\" />\n", m_outputFile );
m_penState = 'Z';
m_penLastpos.x = -1;
m_penLastpos.y = -1;
}
return;
}
if( m_penState == 'Z' ) // here plume = 'D' or 'U'
{
VECTOR2D pos_dev = userToDeviceCoordinates( pos );
// Ensure we do not use a fill mode when moving the pen,
// in SVG mode (i;e. we are plotting only basic lines, not a filled area
if( m_fillMode != FILL_T::NO_FILL )
{
setFillMode( FILL_T::NO_FILL );
setSVGPlotStyle( GetCurrentLineWidth() );
}
fprintf( m_outputFile, "<path d=\"M%.*f %.*f\n",
m_precision, pos_dev.x,
m_precision, pos_dev.y );
}
else if( m_penState != plume || pos != m_penLastpos )
{
VECTOR2D pos_dev = userToDeviceCoordinates( pos );
fprintf( m_outputFile, "L%.*f %.*f\n",
m_precision, pos_dev.x,
m_precision, pos_dev.y );
}
m_penState = plume;
m_penLastpos = pos;
}
bool SVG_PLOTTER::StartPlot( const wxString& aPageNumber )
{
wxASSERT( m_outputFile );
static const char* header[] =
{
"<?xml version=\"1.0\" standalone=\"no\"?>\n",
" <!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \n",
" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\"> \n",
"<svg\n"
" xmlns:svg=\"http://www.w3.org/2000/svg\"\n"
" xmlns=\"http://www.w3.org/2000/svg\"\n",
" xmlns:xlink=\"http://www.w3.org/1999/xlink\"\n",
" version=\"1.1\"\n",
nullptr
};
// Write header.
for( int ii = 0; header[ii] != nullptr; ii++ )
{
fputs( header[ii], m_outputFile );
}
// Write viewport pos and size
VECTOR2D origin; // TODO set to actual value
fprintf( m_outputFile, " width=\"%.*fmm\" height=\"%.*fmm\" viewBox=\"%.*f %.*f %.*f %.*f\">\n",
m_precision, (double) m_paperSize.x / m_IUsPerDecimil * 2.54 / 1000,
m_precision, (double) m_paperSize.y / m_IUsPerDecimil * 2.54 / 1000,
m_precision, origin.x, m_precision, origin.y,
m_precision, m_paperSize.x * m_iuPerDeviceUnit,
m_precision, m_paperSize.y * m_iuPerDeviceUnit);
// Write title
char date_buf[250];
time_t ltime = time( nullptr );
strftime( date_buf, 250, "%Y/%m/%d %H:%M:%S", localtime( &ltime ) );
fprintf( m_outputFile,
"<title>SVG Image created as %s date %s </title>\n",
TO_UTF8( XmlEsc( wxFileName( m_filename ).GetFullName() ) ), date_buf );
// End of header
fprintf( m_outputFile, " <desc>Image generated by %s </desc>\n",
TO_UTF8( XmlEsc( m_creator ) ) );
// output the pen and brush color (RVB values in hex) and opacity
double opacity = 1.0; // 0.0 (transparent to 1.0 (solid)
fprintf( m_outputFile,
"<g style=\"fill:#%6.6lX; fill-opacity:%.*f;stroke:#%6.6lX; stroke-opacity:%.*f;\n",
m_brush_rgb_color, m_precision, m_brush_alpha, m_pen_rgb_color, m_precision, opacity );
// output the pen cap and line joint
fputs( "stroke-linecap:round; stroke-linejoin:round;\"\n", m_outputFile );
fputs( " transform=\"translate(0 0) scale(1 1)\">\n", m_outputFile );
return true;
}
bool SVG_PLOTTER::EndPlot()
{
fputs( "</g> \n</svg>\n", m_outputFile );
fclose( m_outputFile );
m_outputFile = nullptr;
return true;
}
void SVG_PLOTTER::Text( const VECTOR2I& aPos,
const COLOR4D& aColor,
const wxString& aText,
const EDA_ANGLE& aOrient,
const VECTOR2I& aSize,
enum GR_TEXT_H_ALIGN_T aH_justify,
enum GR_TEXT_V_ALIGN_T aV_justify,
int aWidth,
bool aItalic,
bool aBold,
bool aMultilineAllowed,
KIFONT::FONT* aFont,
void* aData )
{
setFillMode( FILL_T::NO_FILL );
SetColor( aColor );
SetCurrentLineWidth( aWidth );
VECTOR2I text_pos = aPos;
const char* hjust = "start";
switch( aH_justify )
{
case GR_TEXT_H_ALIGN_CENTER: hjust = "middle"; break;
case GR_TEXT_H_ALIGN_RIGHT: hjust = "end"; break;
case GR_TEXT_H_ALIGN_LEFT: hjust = "start"; break;
}
switch( aV_justify )
{
case GR_TEXT_V_ALIGN_CENTER: text_pos.y += aSize.y / 2; break;
case GR_TEXT_V_ALIGN_TOP: text_pos.y += aSize.y; break;
case GR_TEXT_V_ALIGN_BOTTOM: break;
}
VECTOR2I text_size;
// aSize.x or aSize.y is < 0 for mirrored texts.
// The actual text size value is the absolute value
text_size.x = std::abs( GraphicTextWidth( aText, aFont, aSize, aWidth, aBold, aItalic ) );
text_size.y = std::abs( aSize.x * 4/3 ); // Hershey font height to em size conversion
VECTOR2D anchor_pos_dev = userToDeviceCoordinates( aPos );
VECTOR2D text_pos_dev = userToDeviceCoordinates( text_pos );
VECTOR2D sz_dev = userToDeviceSize( text_size );
if( !aOrient.IsZero() )
{
fprintf( m_outputFile,
"<g transform=\"rotate(%f %.*f %.*f)\">\n",
- aOrient.AsDegrees(), m_precision, anchor_pos_dev.x, m_precision, anchor_pos_dev.y );
}
fprintf( m_outputFile, "<text x=\"%.*f\" y=\"%.*f\"\n",
m_precision, text_pos_dev.x, m_precision, text_pos_dev.y );
/// If the text is mirrored, we should also mirror the hidden text to match
if( aSize.x < 0 )
fprintf( m_outputFile, "transform=\"scale(-1 1) translate(%f 0)\"\n", -2 * text_pos_dev.x );
fprintf( m_outputFile,
"textLength=\"%.*f\" font-size=\"%.*f\" lengthAdjust=\"spacingAndGlyphs\"\n"
"text-anchor=\"%s\" opacity=\"0\">%s</text>\n",
m_precision, sz_dev.x, m_precision, sz_dev.y, hjust, TO_UTF8( XmlEsc( aText ) ) );
if( !aOrient.IsZero() )
fputs( "</g>\n", m_outputFile );
fprintf( m_outputFile, "<g class=\"stroked-text\"><desc>%s</desc>\n",
TO_UTF8( XmlEsc( aText ) ) );
PLOTTER::Text( aPos, aColor, aText, aOrient, aSize, aH_justify, aV_justify, aWidth, aItalic,
aBold, aMultilineAllowed, aFont );
fputs( "</g>", m_outputFile );
}
void SVG_PLOTTER::PlotText( const VECTOR2I& aPos, const COLOR4D& aColor,
const wxString& aText,
const TEXT_ATTRIBUTES& aAttributes,
KIFONT::FONT* aFont,
void* aData )
{
VECTOR2I size = aAttributes.m_Size;
if( aAttributes.m_Mirrored )
size.x = -size.x;
SVG_PLOTTER::Text( aPos, aColor, aText, aAttributes.m_Angle, size,
aAttributes.m_Halign, aAttributes.m_Valign,
aAttributes.m_StrokeWidth,
aAttributes.m_Italic, aAttributes.m_Bold,
aAttributes.m_Multiline,
aFont, aData );
}
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