112 lines
4.3 KiB
C++
112 lines
4.3 KiB
C++
//| Copyright: (C) 2020-2024 Kevin Larke <contact AT larke DOT org>
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//| License: GNU GPL version 3.0 or above. See the accompanying LICENSE file.
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#ifndef cwSvg_h
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#define cwSvg_h
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namespace cw
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{
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namespace svg
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{
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typedef handle<struct svg_str> handle_t;
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enum
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{
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kStandardColorMapId,
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kGrayScaleColorMapId,
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kInvGrayScaleColorMapId,
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kHeatColorMapId,
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kBaseUserColorMapId
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};
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rc_t create( handle_t& h );
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rc_t destroy( handle_t& h );
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rc_t install_color_map( handle_t h, const unsigned* colorV, unsigned colorN, unsigned colorId=kBaseUserColorMapId );
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void offset( handle_t h, double dx, double dy );
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unsigned color( handle_t h, unsigned colorMapId, double colorMin, double colorMax, double colorValue );
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unsigned color( handle_t h, unsigned colorMapId, unsigned colorIdx );
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rc_t _set_attr( handle_t h, const char* selectorStr, const char* attrLabel, const char* value, const char* suffix );
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rc_t _set_attr( handle_t h, const char* selectorStr, const char* attrLabel, const unsigned& value, const char* suffix );
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rc_t _set_attr( handle_t h, const char* selectorStr, const char* attrLabel, const int& value, const char* suffix );
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rc_t _set_attr( handle_t h, const char* selectorStr, const char* attrLabel, const double& value, const char* suffix );
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inline rc_t _parse_attr( handle_t h, const char* selectorStr ){ return kOkRC; }
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template<typename T, typename ...ARGS>
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rc_t _parse_attr( handle_t h, const char* selectorStr, const char* attrLabel, const T& val, const char* suffix, ARGS&&... args )
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{
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rc_t rc;
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if((rc = _set_attr(h, selectorStr, attrLabel, val, suffix)) == kOkRC )
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rc =_parse_attr( h, selectorStr, std::forward<ARGS>(args)...);
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return rc;
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}
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// Install a CSS selector record.
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// Style attributes are encoded as triples "<label>" <value> "<suffix>".
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// Color values are encoded with the <suffix> = "rgb"
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template< typename ...ARGS>
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rc_t install_css( handle_t h, const char* selectorStr, ARGS&&... args )
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{ return _parse_attr( h, selectorStr, std::forward<ARGS>(args)...); }
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rc_t _rect( handle_t h, double x, double y, double ww, double hh );
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// Draw a rectangle. The variable arg. list must be <argId>,<value> pairs.
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// All attributes assigned here will be encoded inside the SVG element tag.
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// Attributes are encoded as triples "<label>" <value> "<suffix>".
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// Color values are encoded with the <suffix> = "rgb"
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template<typename ...ARGS>
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rc_t rect( handle_t h, double x, double y, double ww, double hh, ARGS&&... args )
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{
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_rect( h, x, y, ww, hh );
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return _parse_attr( h, nullptr, std::forward<ARGS>(args)...);
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}
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rc_t _line( handle_t h, double x0, double y0, double x1, double y1 );
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// Draw a line. The variable arg. list must be <argId>,<value> pairs.
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template<typename ...ARGS>
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rc_t line( handle_t h, double x0, double y0, double x1, double y1, ARGS&&... args )
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{
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_line( h, x0, y0, x1, y1 );
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return _parse_attr( h, nullptr, std::forward<ARGS>(args)...);
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}
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rc_t _pline( handle_t h, const double* yV, unsigned n, const double* xV );
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// Draw a poly-line. The variable arg. list must be <argId>,<value> pairs. Set xV to nullptr to use index as x.
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template<typename ...ARGS>
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rc_t pline( handle_t h, const double* yV, unsigned n, const double* xV, ARGS&&... args )
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{
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_pline( h, yV, n, xV );
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return _parse_attr( h, nullptr, std::forward<ARGS>(args)...);
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}
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rc_t _text( handle_t h, double x, double y, const char* text );
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// Draw text. The variable arg. list must be <argId>,<value> pairs.
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template<typename ...ARGS>
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rc_t text( handle_t h, double x, double y, const char* text, ARGS&&... args )
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{
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_text( h, x, y, text );
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return _parse_attr( h, nullptr, std::forward<ARGS>(args)...);
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}
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rc_t image( handle_t h, const float* xM, unsigned rowN, unsigned colN, unsigned pixSize, unsigned cmapId );
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// Write the SVG file.
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enum { kStandAloneFl=0x01, kPanZoomFl=0x02, kGenCssFileFl=0x04 };
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rc_t write( handle_t h, const char* outFn, const char* cssFn, unsigned flags, double bordL=5, double bordT=5, double bordR=5, double bordB=5 );
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rc_t test( const char* outFn, const char* cssFn );
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}
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}
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#endif
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