#include "agg_color_rgba.h" #include "draw_svg.h" const char *svg_path_property_name[] = {"stroke-dasharray", "marker-start", "marker-mid", "marker-end"}; void format_rgb(char rgbstr[], agg::rgba8 c) { sprintf(rgbstr, "#%02X%02X%02X", (int)c.r, (int)c.g, (int)c.b); } static void append_properties(str& s, svg_property_list* properties) { for (svg_property_list* p = properties; p; p = p->next()) { svg_property_item& item = p->content(); const char* name = svg_path_property_name[item.key]; s.printf_add(";%s:%s", name, item.value); } } static void property_append_alpha(str& s, const char* prop, agg::rgba8 c) { if (c.a < 255) { double alpha = (double)c.a / 255; s.printf_add(";%s:%g", prop, alpha); } } static str gen_path_element(str& content, str& style, int id) { str s = str::print("= 0) s.printf_add("id=\"path%i\" ", id); s.printf_add("style=\"%s\" />", style.cstr()); return s; } str svg_stroke_path(str& path_coords, double width, int id, agg::rgba8 c, svg_property_list* properties) { char rgbstr[8]; format_rgb(rgbstr, c); str s = str::print("fill:none;stroke:%s;" "stroke-width:%g;stroke-linecap:butt;" "stroke-linejoin:miter", rgbstr, width); property_append_alpha(s, "stroke-opacity", c); append_properties(s, properties); return gen_path_element(path_coords, s, id); } str svg_marker_path(str& path_coords, double sw, int id, svg_property_list* properties) { str s = str::print("fill:none;stroke:none;stroke-width:%g", sw); append_properties(s, properties); return gen_path_element(path_coords, s, id); } str svg_fill_path(str& path_coords, int id, agg::rgba8 c, svg_property_list* properties) { char rgbstr[8]; format_rgb(rgbstr, c); str s = str::print("fill:%s;stroke:none", rgbstr); property_append_alpha(s, "fill-opacity", c); append_properties(s, properties); return gen_path_element(path_coords, s, id); }