686 lines
20 KiB
C++
686 lines
20 KiB
C++
/**
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* @file SVG_plotter.cpp
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* @brief Kicad: specialized plotter for SVG files format
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*/
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/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2017 Jean-Pierre Charras, jp.charras at wanadoo.fr
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* Copyright (C) 1992-2017 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/* Some info on basic items SVG format, used here:
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* The root element of all SVG files is the <svg> element.
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*
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* The <g> element is used to group SVG shapes together.
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* Once grouped you can transform the whole group of shapes as if it was a single shape.
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* This is an advantage compared to a nested <svg> element
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* which cannot be the target of transformation by itself.
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*
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* The <rect> element represents a rectangle.
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* Using this element you can draw rectangles of various width, height,
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* with different stroke (outline) and fill colors, with sharp or rounded corners etc.
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*
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* <svg xmlns="http://www.w3.org/2000/svg"
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* xmlns:xlink="http://www.w3.org/1999/xlink">
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*
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* <rect x="10" y="10" height="100" width="100"
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* style="stroke:#006600; fill: #00cc00"/>
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*
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* </svg>
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*
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* The <circle> element is used to draw circles.
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* <circle cx="40" cy="40" r="24" style="stroke:#006600; fill:#00cc00"/>
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*
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* The <ellipse> element is used to draw ellipses.
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* An ellipse is a circle that does not have equal height and width.
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* Its radius in the x and y directions are different, in other words.
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* <ellipse cx="40" cy="40" rx="30" ry="15"
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* style="stroke:#006600; fill:#00cc00"/>
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*
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* The <line> element is used to draw lines.
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*
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* <line x1="0" y1="10" x2="0" y2="100" style="stroke:#006600;"/>
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* <line x1="10" y1="10" x2="100" y2="100" style="stroke:#006600;"/>
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*
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* The <polyline> element is used to draw multiple connected lines
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* Here is a simple example:
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*
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* <polyline points="0,0 30,0 15,30" style="stroke:#006600;"/>
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*
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* The <polygon> element is used to draw with multiple (3 or more) sides / edges.
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* Here is a simple example:
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*
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* <polygon points="0,0 50,0 25,50" style="stroke:#660000; fill:#cc3333;"/>
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*
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* The <path> element is used to draw advanced shapes combined from lines and arcs,
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* with or without fill.
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* It is probably the most advanced and versatile SVG shape of them all.
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* It is probably also the hardest element to master.
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* <path d="M50,50
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* A30,30 0 0,1 35,20
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* L100,100
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* M110,110
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* L100,0"
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* style="stroke:#660000; fill:none;"/>
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*
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* Draw an elliptic arc: it is one of basic path command:
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* <path d="M(startx,starty) A(radiusx,radiusy)
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* rotation-axe-x
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* flag_arc_large,flag_sweep endx,endy">
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* flag_arc_large: 0 = small arc > 180 deg, 1 = large arc > 180 deg
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* flag_sweep : 0 = CCW, 1 = CW
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* The center of ellipse is automatically calculated.
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*/
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#include <fctsys.h>
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#include <trigo.h>
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#include <eda_base_frame.h>
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#include <eda_rect.h>
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#include <base_struct.h>
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#include <common.h>
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#include <plotter.h>
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#include <macros.h>
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#include <kicad_string.h>
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/**
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* Function XmlEsc
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* translates '<' to "<", '>' to ">" and so on, according to the spec:
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* http://www.w3.org/TR/2000/WD-xml-c14n-20000119.html#charescaping
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* May be moved to a library if needed generally, but not expecting that.
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*/
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static wxString XmlEsc( const wxString& aStr, bool isAttribute = false )
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{
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wxString escaped;
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escaped.reserve( aStr.length() );
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for( wxString::const_iterator it = aStr.begin(); it != aStr.end(); ++it )
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{
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const wxChar c = *it;
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switch( c )
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{
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case wxS( '<' ):
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escaped.append( wxS( "<" ) );
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break;
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case wxS( '>' ):
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escaped.append( wxS( ">" ) );
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break;
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case wxS( '&' ):
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escaped.append( wxS( "&" ) );
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break;
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case wxS( '\r' ):
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escaped.append( wxS( "
" ) );
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break;
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default:
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if( isAttribute )
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{
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switch( c )
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{
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case wxS( '"' ):
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escaped.append( wxS( """ ) );
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break;
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case wxS( '\t' ):
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escaped.append( wxS( "	" ) );
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break;
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case wxS( '\n' ):
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escaped.append( wxS( "
" ));
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break;
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default:
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escaped.append(c);
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}
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}
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else
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escaped.append(c);
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}
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}
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return escaped;
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}
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SVG_PLOTTER::SVG_PLOTTER()
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{
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m_graphics_changed = true;
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SetTextMode( PLOTTEXTMODE_STROKE );
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m_fillMode = NO_FILL; // or FILLED_SHAPE or FILLED_WITH_BG_BODYCOLOR
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m_pen_rgb_color = 0; // current color value (black)
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m_brush_rgb_color = 0; // current color value (black)
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m_dashed = false;
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}
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void SVG_PLOTTER::SetViewport( const wxPoint& aOffset, double aIusPerDecimil,
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double aScale, bool aMirror )
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{
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m_plotMirror = aMirror;
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m_yaxisReversed = true; // unlike other plotters, SVG has Y axis reversed
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plotOffset = aOffset;
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plotScale = aScale;
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m_IUsPerDecimil = aIusPerDecimil;
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iuPerDeviceUnit = 1.0 / aIusPerDecimil;
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/* Compute the paper size in IUs */
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paperSize = pageInfo.GetSizeMils();
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paperSize.x *= 10.0 * aIusPerDecimil;
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paperSize.y *= 10.0 * aIusPerDecimil;
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SetDefaultLineWidth( 100 * aIusPerDecimil ); // arbitrary default
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}
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void SVG_PLOTTER::SetColor( COLOR4D color )
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{
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PSLIKE_PLOTTER::SetColor( color );
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if( m_graphics_changed )
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setSVGPlotStyle();
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}
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void SVG_PLOTTER::setFillMode( FILL_T fill )
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{
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if( m_fillMode != fill )
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{
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m_graphics_changed = true;
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m_fillMode = fill;
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}
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}
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void SVG_PLOTTER::setSVGPlotStyle( bool aIsGroup, const std::string& aExtraStyle )
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{
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if( aIsGroup )
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fputs( "</g>\n<g ", outputFile );
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// output the background fill color
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fprintf( outputFile, "style=\"fill:#%6.6lX; ", m_brush_rgb_color );
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switch( m_fillMode )
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{
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case NO_FILL:
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fputs( "fill-opacity:0.0; ", outputFile );
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break;
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case FILLED_SHAPE:
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fputs( "fill-opacity:1.0; ", outputFile );
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break;
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case FILLED_WITH_BG_BODYCOLOR:
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fputs( "fill-opacity:0.6; ", outputFile );
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break;
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}
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double pen_w = userToDeviceSize( GetCurrentLineWidth() );
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fprintf( outputFile, "\nstroke:#%6.6lX; stroke-width:%g; stroke-opacity:1; \n",
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m_pen_rgb_color, pen_w );
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fputs( "stroke-linecap:round; stroke-linejoin:round;", outputFile );
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switch( m_dashed )
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{
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case PLOTDASHTYPE_DASH:
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fprintf( outputFile, "stroke-dasharray:%g,%g;",
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GetDashMarkLenIU(), GetDashGapLenIU() );
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break;
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case PLOTDASHTYPE_DOT:
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fprintf( outputFile, "stroke-dasharray:%g,%g;",
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GetDotMarkLenIU(), GetDashGapLenIU() );
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break;
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case PLOTDASHTYPE_DASHDOT:
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fprintf( outputFile, "stroke-dasharray:%g,%g,%g,%g;",
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GetDashMarkLenIU(), GetDashGapLenIU(), GetDotMarkLenIU(), GetDashGapLenIU() );
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break;
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}
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if( aExtraStyle.length() )
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{
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fputs( aExtraStyle.c_str(), outputFile );
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}
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fputs( "\"", outputFile );
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if( aIsGroup )
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{
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fputs( ">", outputFile );
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m_graphics_changed = false;
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}
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fputs( "\n", outputFile );
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}
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/* Set the current line width (in IUs) for the next plot
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*/
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void SVG_PLOTTER::SetCurrentLineWidth( int width, void* aData )
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{
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int pen_width;
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if( width >= 0 )
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pen_width = width;
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else
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pen_width = defaultPenWidth;
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if( pen_width != currentPenWidth )
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{
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m_graphics_changed = true;
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currentPenWidth = pen_width;
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}
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if( m_graphics_changed )
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setSVGPlotStyle();
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}
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void SVG_PLOTTER::StartBlock( void* aData )
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{
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std::string* idstr = reinterpret_cast<std::string*>( aData );
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fputs( "<g ", outputFile );
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if( idstr )
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fprintf( outputFile, "id=\"%s\"", idstr->c_str() );
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fprintf( outputFile, ">\n" );
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}
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void SVG_PLOTTER::EndBlock( void* aData )
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{
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fprintf( outputFile, "</g>\n" );
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m_graphics_changed = true;
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}
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/* initialize m_red, m_green, m_blue ( 0 ... 255)
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* from reduced values r, g ,b ( 0.0 to 1.0 )
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*/
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void SVG_PLOTTER::emitSetRGBColor( double r, double g, double b )
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{
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int red = (int) ( 255.0 * r );
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int green = (int) ( 255.0 * g );
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int blue = (int) ( 255.0 * b );
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long rgb_color = (red << 16) | (green << 8) | blue;
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if( m_pen_rgb_color != rgb_color )
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{
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m_graphics_changed = true;
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m_pen_rgb_color = rgb_color;
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// Currently, use the same color for brush and pen
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// (i.e. to draw and fill a contour)
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m_brush_rgb_color = rgb_color;
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}
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}
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/**
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* SVG supports dashed lines
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*/
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void SVG_PLOTTER::SetDash( int dashed )
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{
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if( m_dashed != dashed )
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{
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m_graphics_changed = true;
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m_dashed = dashed;
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}
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if( m_graphics_changed )
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setSVGPlotStyle();
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}
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void SVG_PLOTTER::Rect( const wxPoint& p1, const wxPoint& p2, FILL_T fill, int width )
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{
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EDA_RECT rect( p1, wxSize( p2.x -p1.x, p2.y -p1.y ) );
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rect.Normalize();
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DPOINT org_dev = userToDeviceCoordinates( rect.GetOrigin() );
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DPOINT end_dev = userToDeviceCoordinates( rect.GetEnd() );
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DSIZE size_dev = end_dev - org_dev;
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// Ensure size of rect in device coordinates is > 0
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// I don't know if this is a SVG issue or a Inkscape issue, but
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// Inkscape has problems with negative or null values for width and/or height, so avoid them
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DBOX rect_dev( org_dev, size_dev);
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rect_dev.Normalize();
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setFillMode( fill );
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SetCurrentLineWidth( width );
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// Rectangles having a 0 size value for height or width are just not drawn on Inscape,
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// so use a line when happens.
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if( rect_dev.GetSize().x == 0.0 || rect_dev.GetSize().y == 0.0 ) // Draw a line
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fprintf( outputFile,
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"<line x1=\"%g\" y1=\"%g\" x2=\"%g\" y2=\"%g\" />\n",
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rect_dev.GetPosition().x, rect_dev.GetPosition().y,
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rect_dev.GetEnd().x, rect_dev.GetEnd().y
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);
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else
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fprintf( outputFile,
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"<rect x=\"%g\" y=\"%g\" width=\"%g\" height=\"%g\" rx=\"%g\" />\n",
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rect_dev.GetPosition().x, rect_dev.GetPosition().y,
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rect_dev.GetSize().x, rect_dev.GetSize().y,
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0.0 // radius of rounded corners
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);
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}
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void SVG_PLOTTER::Circle( const wxPoint& pos, int diametre, FILL_T fill, int width )
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{
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DPOINT pos_dev = userToDeviceCoordinates( pos );
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double radius = userToDeviceSize( diametre / 2.0 );
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setFillMode( fill );
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SetCurrentLineWidth( width );
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// If diameter is less than width, switch to filled mode
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if( fill == NO_FILL && diametre < width )
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{
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setFillMode( FILLED_SHAPE );
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SetCurrentLineWidth( 0 );
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radius = userToDeviceSize( ( diametre / 2.0 ) + ( width / 2.0 ) );
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}
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fprintf( outputFile,
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"<circle cx=\"%g\" cy=\"%g\" r=\"%g\" /> \n",
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pos_dev.x, pos_dev.y, radius );
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}
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void SVG_PLOTTER::Arc( const wxPoint& centre, double StAngle, double EndAngle, int radius,
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FILL_T fill, int width )
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{
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/* Draws an arc of a circle, centred on (xc,yc), with starting point
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* (x1, y1) and ending at (x2, y2). The current pen is used for the outline
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* and the current brush for filling the shape.
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*
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* The arc is drawn in an anticlockwise direction from the start point to
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* the end point
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*/
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if( radius <= 0 )
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{
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Circle( centre, width, FILLED_SHAPE, 0 );
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return;
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}
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if( StAngle > EndAngle )
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std::swap( StAngle, EndAngle );
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setFillMode( fill );
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SetCurrentLineWidth( width );
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// Calculate start point.
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DPOINT centre_dev = userToDeviceCoordinates( centre );
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double radius_dev = userToDeviceSize( radius );
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if( !m_yaxisReversed ) // Should be never the case
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{
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double tmp = StAngle;
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StAngle = -EndAngle;
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EndAngle = -tmp;
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}
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if( m_plotMirror )
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{
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if( m_mirrorIsHorizontal )
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{
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StAngle = 1800.0 -StAngle;
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EndAngle = 1800.0 -EndAngle;
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std::swap( StAngle, EndAngle );
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}
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else
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{
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StAngle = -StAngle;
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EndAngle = -EndAngle;
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}
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}
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DPOINT start;
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start.x = radius_dev;
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RotatePoint( &start.x, &start.y, StAngle );
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DPOINT end;
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end.x = radius_dev;
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RotatePoint( &end.x, &end.y, EndAngle );
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start += centre_dev;
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end += centre_dev;
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double theta1 = DECIDEG2RAD( StAngle );
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if( theta1 < 0 )
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theta1 = theta1 + M_PI * 2;
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double theta2 = DECIDEG2RAD( EndAngle );
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if( theta2 < 0 )
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theta2 = theta2 + M_PI * 2;
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if( theta2 < theta1 )
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theta2 = theta2 + M_PI * 2;
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int flg_arc = 0; // flag for large or small arc. 0 means less than 180 degrees
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if( fabs( theta2 - theta1 ) > M_PI )
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flg_arc = 1;
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int flg_sweep = 0; // flag for sweep always 0
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// Draw a single arc: an arc is one of 3 curve commands (2 other are 2 bezier curves)
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// params are start point, radius1, radius2, X axe rotation,
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// flag arc size (0 = small arc > 180 deg, 1 = large arc > 180 deg),
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// sweep arc ( 0 = CCW, 1 = CW),
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// end point
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fprintf( outputFile, "<path d=\"M%g %g A%g %g 0.0 %d %d %g %g \" />\n",
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start.x, start.y, radius_dev, radius_dev,
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flg_arc, flg_sweep,
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end.x, end.y );
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}
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void SVG_PLOTTER::PlotPoly( const std::vector<wxPoint>& aCornerList,
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FILL_T aFill, int aWidth, void * aData )
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{
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if( aCornerList.size() <= 1 )
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return;
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setFillMode( aFill );
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SetCurrentLineWidth( aWidth );
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fprintf( outputFile, "<path ");
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switch( aFill )
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{
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case NO_FILL:
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setSVGPlotStyle( false, "fill:none" );
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break;
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case FILLED_WITH_BG_BODYCOLOR:
|
|
case FILLED_SHAPE:
|
|
setSVGPlotStyle( false, "fill-rule:evenodd;" );
|
|
break;
|
|
}
|
|
|
|
DPOINT pos = userToDeviceCoordinates( aCornerList[0] );
|
|
fprintf( outputFile, "d=\"M %d,%d\n", (int) pos.x, (int) pos.y );
|
|
|
|
for( unsigned ii = 1; ii < aCornerList.size(); ii++ )
|
|
{
|
|
pos = userToDeviceCoordinates( aCornerList[ii] );
|
|
fprintf( outputFile, "%d,%d\n", (int) pos.x, (int) pos.y );
|
|
}
|
|
|
|
fprintf( outputFile, "Z\" /> \n" );
|
|
}
|
|
|
|
|
|
/**
|
|
* Postscript-likes at the moment are the only plot engines supporting bitmaps...
|
|
*/
|
|
void SVG_PLOTTER::PlotImage( const wxImage& aImage, const wxPoint& aPos,
|
|
double aScaleFactor )
|
|
{
|
|
// in svg file we must insert a link to a png image file to plot an image
|
|
// the image itself is not included in the svg file.
|
|
// So we prefer skip the image, and just draw a rectangle,
|
|
// like other plotters which do not support images
|
|
|
|
PLOTTER::PlotImage( aImage, aPos, aScaleFactor );
|
|
|
|
}
|
|
|
|
|
|
void SVG_PLOTTER::PenTo( const wxPoint& pos, char plume )
|
|
{
|
|
if( plume == 'Z' )
|
|
{
|
|
if( penState != 'Z' )
|
|
{
|
|
fputs( "\" />\n", outputFile );
|
|
penState = 'Z';
|
|
penLastpos.x = -1;
|
|
penLastpos.y = -1;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
if( penState == 'Z' ) // here plume = 'D' or 'U'
|
|
{
|
|
DPOINT pos_dev = userToDeviceCoordinates( pos );
|
|
|
|
// Ensure we do not use a fill mode when moving tne pen,
|
|
// in SVG mode (i;e. we are plotting only basic lines, not a filled area
|
|
if( m_fillMode != NO_FILL )
|
|
{
|
|
setFillMode( NO_FILL );
|
|
setSVGPlotStyle();
|
|
}
|
|
|
|
fprintf( outputFile, "<path d=\"M%d %d\n",
|
|
(int) pos_dev.x, (int) pos_dev.y );
|
|
}
|
|
else if( penState != plume || pos != penLastpos )
|
|
{
|
|
DPOINT pos_dev = userToDeviceCoordinates( pos );
|
|
fprintf( outputFile, "L%d %d\n",
|
|
(int) pos_dev.x, (int) pos_dev.y );
|
|
}
|
|
|
|
penState = plume;
|
|
penLastpos = pos;
|
|
}
|
|
|
|
|
|
/**
|
|
* The code within this function
|
|
* creates SVG files header
|
|
*/
|
|
bool SVG_PLOTTER::StartPlot()
|
|
{
|
|
wxASSERT( outputFile );
|
|
wxString msg;
|
|
|
|
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 xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" \n",
|
|
NULL
|
|
};
|
|
|
|
// Write header.
|
|
for( int ii = 0; header[ii] != NULL; ii++ )
|
|
{
|
|
fputs( header[ii], outputFile );
|
|
}
|
|
|
|
// Write viewport pos and size
|
|
wxPoint origin; // TODO set to actual value
|
|
fprintf( outputFile,
|
|
" width=\"%gcm\" height=\"%gcm\" viewBox=\"%d %d %d %d \">\n",
|
|
(double) paperSize.x / m_IUsPerDecimil * 2.54 / 10000,
|
|
(double) paperSize.y / m_IUsPerDecimil * 2.54 / 10000,
|
|
origin.x, origin.y,
|
|
(int) ( paperSize.x / m_IUsPerDecimil ),
|
|
(int) ( paperSize.y / m_IUsPerDecimil) );
|
|
|
|
// Write title
|
|
char date_buf[250];
|
|
time_t ltime = time( NULL );
|
|
strftime( date_buf, 250, "%Y/%m/%d %H:%M:%S",
|
|
localtime( <ime ) );
|
|
|
|
fprintf( outputFile,
|
|
"<title>SVG Picture created as %s date %s </title>\n",
|
|
TO_UTF8( XmlEsc( wxFileName( filename ).GetFullName() ) ), date_buf );
|
|
// End of header
|
|
fprintf( outputFile, " <desc>Picture generated by %s </desc>\n",
|
|
TO_UTF8( XmlEsc( 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( outputFile,
|
|
"<g style=\"fill:#%6.6lX; fill-opacity:%g;stroke:#%6.6lX; stroke-opacity:%g;\n",
|
|
m_brush_rgb_color, opacity, m_pen_rgb_color, opacity );
|
|
|
|
// output the pen cap and line joint
|
|
fputs( "stroke-linecap:round; stroke-linejoin:round; \"\n", outputFile );
|
|
fputs( " transform=\"translate(0 0) scale(1 1)\">\n", outputFile );
|
|
return true;
|
|
}
|
|
|
|
|
|
bool SVG_PLOTTER::EndPlot()
|
|
{
|
|
fputs( "</g> \n</svg>\n", outputFile );
|
|
fclose( outputFile );
|
|
outputFile = NULL;
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
void SVG_PLOTTER::Text( const wxPoint& aPos,
|
|
const COLOR4D aColor,
|
|
const wxString& aText,
|
|
double aOrient,
|
|
const wxSize& aSize,
|
|
enum EDA_TEXT_HJUSTIFY_T aH_justify,
|
|
enum EDA_TEXT_VJUSTIFY_T aV_justify,
|
|
int aWidth,
|
|
bool aItalic,
|
|
bool aBold,
|
|
bool aMultilineAllowed,
|
|
void* aData )
|
|
{
|
|
setFillMode( NO_FILL );
|
|
SetColor( aColor );
|
|
SetCurrentLineWidth( aWidth );
|
|
|
|
// TODO: see if the postscript native text code can be used in SVG plotter
|
|
|
|
fprintf( 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 );
|
|
fputs( "</g>", outputFile );
|
|
}
|