+ {
+ Debug("Loaded empty document.");
+ return;
+ }
+ Debug("Loading document from file \"%s\"", filename.c_str());
+ FILE * file = fopen(filename.c_str(), "r");
+ if (file == NULL)
+ Fatal("Couldn't open file \"%s\"", filename.c_str(), strerror(errno));
+
+ size_t read;
+
+ DocChunkTypes chunk_type;
+ uint32_t chunk_size;
+ while (ReadChunkHeader(file, chunk_type, chunk_size))
+ {
+ switch(chunk_type)
+ {
+ case CT_NUMOBJS:
+ read = fread(&m_count, sizeof(m_count), 1, file);
+ if (read != 1)
+ Fatal("Failed to read number of objects!");
+ Debug("Number of objects: %u", ObjectCount());
+ break;
+ case CT_OBJTYPES:
+ Debug("Object types...");
+ LoadStructVector<ObjectType>(file, chunk_size/sizeof(ObjectType), m_objects.types);
+ break;
+ case CT_OBJBOUNDS:
+ Debug("Object bounds...");
+ LoadStructVector<Rect>(file, chunk_size/sizeof(Rect), m_objects.bounds);
+ break;
+ case CT_OBJINDICES:
+ Debug("Object data indices...");
+ LoadStructVector<unsigned>(file, chunk_size/sizeof(unsigned), m_objects.data_indices);
+ break;
+ case CT_OBJBEZIERS:
+ Debug("Bezier data...");
+ LoadStructVector<Bezier>(file, chunk_size/sizeof(Bezier), m_objects.beziers);
+ break;
+
+ case CT_OBJPATHS:
+ Debug("Path data...");
+ Warn("Not handled because lazy");
+ break;
+ }
+ }
+ Debug("Successfully loaded %u objects from \"%s\"", ObjectCount(), filename.c_str());
+#ifndef QUADTREE_DISABLED
+ if (m_quadtree.root_id == QUADTREE_EMPTY)
+ {
+ GenBaseQuadtree();
+ }
+#endif
+}
+
+unsigned Document::AddPath(unsigned start_index, unsigned end_index, const Colour & fill, const Colour & stroke)
+{
+ Path path(m_objects, start_index, end_index, fill, stroke);
+ unsigned data_index = AddPathData(path);
+ Rect bounds = path.SolveBounds(m_objects);
+ unsigned result = Add(PATH, bounds,data_index);
+ //Debug("Added path %u -> %u (%u objects) colour {%u,%u,%u,%u}, stroke {%u,%u,%u,%u}", start_index, end_index, (end_index - start_index), fill.r, fill.g, fill.b, fill.a, stroke.r, stroke.g, stroke.b, stroke.a);
+ return result;
+}
+
+/**
+ * Add a Bezier using Absolute coords
+ */
+unsigned Document::AddBezier(const Bezier & bezier)
+{
+ Rect bounds = bezier.SolveBounds();
+ Bezier data = bezier.ToRelative(bounds); // Relative
+ if (data.ToAbsolute(bounds) != bezier)
+ {
+ Warn("%s != %s", data.ToAbsolute(Rect(0,0,1,1)).Str().c_str(),
+ bezier.Str().c_str());
+ Warn("ToAbsolute on ToRelative does not give original Bezier");
+ }
+ unsigned index = AddBezierData(data);
+ return Add(BEZIER, bounds, index);
+}
+
+unsigned Document::Add(ObjectType type, const Rect & bounds, unsigned data_index)
+{
+ m_objects.types.push_back(type);
+ m_objects.bounds.push_back(bounds);
+ m_objects.data_indices.push_back(data_index);
+ return (m_count++); // Why can't we just use the size of types or something?
+}
+
+unsigned Document::AddBezierData(const Bezier & bezier)
+{
+ m_objects.beziers.push_back(bezier);
+ return m_objects.beziers.size()-1;
+}
+
+unsigned Document::AddPathData(const Path & path)
+{
+ m_objects.paths.push_back(path);
+ return m_objects.paths.size()-1;
+}
+
+void Document::DebugDumpObjects()
+{
+ Debug("Objects for Document %p are:", this);
+ for (unsigned id = 0; id < ObjectCount(); ++id)
+ {
+ Debug("%u. \tType: %u\tBounds: %s", id, m_objects.types[id], m_objects.bounds[id].Str().c_str());
+ }
+}
+
+bool Document::operator==(const Document & equ) const
+{
+ return (ObjectCount() == equ.ObjectCount()
+ && memcmp(m_objects.bounds.data(), equ.m_objects.bounds.data(), ObjectCount() * sizeof(Rect)) == 0
+ && memcmp(m_objects.data_indices.data(), equ.m_objects.data_indices.data(), ObjectCount() * sizeof(unsigned)) == 0
+ && memcmp(m_objects.beziers.data(), equ.m_objects.beziers.data(), m_objects.beziers.size() * sizeof(Bezier)) == 0);
+}
+
+
+
+// Behold my amazing tokenizing abilities
+static string & GetToken(const string & d, string & token, unsigned & i, const string & delims = "()[],{}<>;:=")
+{
+ token.clear();
+ while (i < d.size() && iswspace(d[i]))
+ {
+ ++i;
+ }
+
+ while (i < d.size())
+ {
+ if (iswspace(d[i]) || strchr(delims.c_str(),d[i]) != NULL)
+ {
+ if (token.size() == 0 && !iswspace(d[i]))
+ {
+ token += d[i++];
+ }
+ break;
+ }
+ token += d[i++];
+ }
+ //Debug("Got token \"%s\"", token.c_str());
+ return token;
+}
+
+static void GetXYPair(const string & d, Real & x, Real & y, unsigned & i,const string & delims = "()[],{}<>;:=")
+{
+ string token("");
+ while (GetToken(d, token, i, delims) == ",");
+ x = strtod(token.c_str(),NULL);
+ if (GetToken(d, token, i, delims) != ",")
+ {
+ Fatal("Expected \",\" seperating x,y pair");
+ }
+ y = strtod(GetToken(d, token, i, delims).c_str(),NULL);
+}
+
+static bool GetKeyValuePair(const string & d, string & key, string & value, unsigned & i, const string & delims = "()[],{}<>;:=")
+{
+ key = "";
+ string token;
+ while (GetToken(d, token, i, delims) == ":" || token == ";");
+ key = token;
+ if (GetToken(d, token, i, delims) != ":")
+ {
+ Error("Expected \":\" seperating key:value pair");
+ return false;
+ }
+ value = "";
+ GetToken(d, value, i, delims);
+ return true;
+}
+
+static void TransformXYPair(Real & x, Real & y, const SVGMatrix & transform)
+{
+ Real x0(x);
+ x = transform.a * x + transform.c * y + transform.e;
+ y = transform.b * x0 + transform.d * y + transform.f;
+}
+
+void Document::ParseSVGTransform(const string & s, SVGMatrix & transform)
+{
+ //Debug("Parsing transform %s", s.c_str());
+ string token;
+ string command;
+ unsigned i = 0;
+
+ while (i < s.size())
+ {
+ GetToken(s, command, i);
+ if (command == "," || command == "" || command == ":")
+ {
+ if (i < s.size())
+ GetToken(s, command, i);
+ else
+ return;
+ }
+ //Debug("Token is \"%s\"", command.c_str());
+
+ SVGMatrix delta = {1,0,0,0,1,0};
+
+
+ assert(GetToken(s,token, i) == "(");
+ if (command == "translate")
+ {
+ GetXYPair(s, delta.e, delta.f, i);
+ assert(GetToken(s,token, i) == ")");
+ }
+ else if (command == "matrix")
+ {
+ GetXYPair(s, delta.a, delta.b,i);
+ GetXYPair(s, delta.c, delta.d,i);
+ GetXYPair(s, delta.e, delta.f,i);
+ assert(GetToken(s,token, i) == ")");
+ }
+ else if (command == "scale")
+ {
+ delta.a = (strtod(GetToken(s,token,i).c_str(), NULL));
+ GetToken(s, token, i);
+ if (token == ",")
+ {
+ delta.d = (strtod(GetToken(s,token,i).c_str(), NULL));
+ assert(GetToken(s, token, i) == ")");
+ }
+ else
+ {
+ delta.d = delta.a;
+ assert(token == ")");
+ }
+
+ }
+ else
+ {
+ Warn("Unrecognised transform \"%s\", using identity", command.c_str());
+ }
+
+ //Debug("Old transform is {%f,%f,%f,%f,%f,%f}", transform.a, transform.b, transform.c, transform.d,transform.e,transform.f);
+ //Debug("Delta transform is {%f,%f,%f,%f,%f,%f}", delta.a, delta.b, delta.c, delta.d,delta.e,delta.f);
+
+ SVGMatrix old(transform);
+ transform.a = old.a * delta.a + old.c * delta.b;
+ transform.c = old.a * delta.c + old.c * delta.d;
+ transform.e = old.a * delta.e + old.c * delta.f + old.e;
+
+ transform.b = old.b * delta.a + old.d * delta.b;
+ transform.d = old.b * delta.c + old.d * delta.d;
+ transform.f = old.b * delta.e + old.d * delta.f + old.f;
+
+ //Debug("New transform is {%f,%f,%f,%f,%f,%f}", transform.a, transform.b, transform.c, transform.d,transform.e,transform.f);
+ }
+}
+
+inline Colour ParseColourString(const string & colour_str)
+{
+ Colour c(0,0,0,0);
+ if (colour_str == "red")
+ c = {255,0,0,255};
+ else if (colour_str == "blue")
+ c = {0,0,255,255};
+ else if (colour_str == "green")
+ c = {0,255,0,255};
+ else if (colour_str == "black")
+ c = {0,0,0,255};
+ else if (colour_str == "white")
+ c = {255,255,255,255};
+ else if (colour_str.size() == 7 && colour_str[0] == '#')
+ {
+ Debug("Parse colour string: \"%s\"", colour_str.c_str());
+ char comp[3] = {colour_str[1], colour_str[2], '\0'};
+ c.r = strtoul(comp, NULL, 16);
+ comp[0] = colour_str[3]; comp[1] = colour_str[4];
+ c.g = strtoul(comp, NULL, 16);
+ comp[0] = colour_str[5]; comp[1] = colour_str[6];
+ c.b = strtoul(comp, NULL, 16);
+ c.a = 255;
+ Debug("Colour is: %u, %u, %u, %u", c.r, c.g, c.b, c.a);
+ }
+ return c;
+}
+
+void Document::ParseSVGNode(pugi::xml_node & root, SVGMatrix & parent_transform)
+{
+ //Debug("Parse node <%s>", root.name());
+
+
+ for (pugi::xml_node child = root.first_child(); child; child = child.next_sibling())
+ {
+ SVGMatrix transform(parent_transform);
+ pugi::xml_attribute attrib_trans = child.attribute("transform");
+ if (!attrib_trans.empty())
+ {
+ ParseSVGTransform(attrib_trans.as_string(), transform);
+ }
+
+
+
+ if (strcmp(child.name(), "svg") == 0 || strcmp(child.name(),"g") == 0
+ || strcmp(child.name(), "group") == 0)
+ {
+
+ ParseSVGNode(child, transform);
+ continue;
+ }
+ else if (strcmp(child.name(), "path") == 0)
+ {
+ string d = child.attribute("d").as_string();
+ //Debug("Path data attribute is \"%s\"", d.c_str());
+ bool closed = false;
+ pair<unsigned, unsigned> range = ParseSVGPathData(d, transform, closed);
+ if (true)//(closed)
+ {
+
+ string colour_str("");
+ map<string, string> style;
+ if (child.attribute("style"))
+ {
+ ParseSVGStyleData(child.attribute("style").as_string(), style);
+ }
+
+ // Determine shading colour
+ if (child.attribute("fill"))
+ {
+ colour_str = child.attribute("fill").as_string();
+ }
+ else if (style.find("fill") != style.end())
+ {
+ colour_str = style["fill"];
+ }
+ Colour fill = ParseColourString(colour_str);
+ Colour stroke = fill;
+
+ if (child.attribute("stroke"))
+ {
+ colour_str = child.attribute("stroke").as_string();
+ stroke = ParseColourString(colour_str);
+ }
+ else if (style.find("stroke") != style.end())
+ {
+ colour_str = style["stroke"];
+ stroke = ParseColourString(colour_str);
+ }
+
+
+ // Determin shading alpha
+ if (child.attribute("fill-opacity"))
+ {
+ fill.a = 255*child.attribute("fill-opacity").as_float();
+ }
+ else if (style.find("fill-opacity") != style.end())
+ {
+ fill.a = 255*strtod(style["fill-opacity"].c_str(), NULL);
+ }
+ if (child.attribute("stroke-opacity"))
+ {
+ stroke.a = 255*child.attribute("stroke-opacity").as_float();
+ }
+ else if (style.find("stroke-opacity") != style.end())
+ {
+ stroke.a = 255*strtod(style["stroke-opacity"].c_str(), NULL);
+ }
+ AddPath(range.first, range.second, fill, stroke);
+ }
+
+ }
+ else if (strcmp(child.name(), "line") == 0)
+ {
+ Real x0(child.attribute("x1").as_float());
+ Real y0(child.attribute("y1").as_float());
+ Real x1(child.attribute("x2").as_float());
+ Real y1(child.attribute("y2").as_float());
+ TransformXYPair(x0,y0,transform);
+ TransformXYPair(x1,y1,transform);
+ AddBezier(Bezier(x0,y0,x1,y1,x1,y1,x1,y1));
+ }
+ else if (strcmp(child.name(), "rect") == 0)
+ {
+ Real coords[4];
+ const char * attrib_names[] = {"x", "y", "width", "height"};
+ for (size_t i = 0; i < 4; ++i)
+ coords[i] = child.attribute(attrib_names[i]).as_float();
+
+ Real x2(coords[0]+coords[2]);
+ Real y2(coords[1]+coords[3]);
+ TransformXYPair(coords[0],coords[1],transform); // x, y, transform
+ TransformXYPair(x2,y2,transform);
+ coords[2] = x2 - coords[0];
+ coords[3] = y2 - coords[1];
+
+ bool outline = !(child.attribute("fill") && strcmp(child.attribute("fill").as_string(),"none") != 0);
+ Add(outline?RECT_OUTLINE:RECT_FILLED, Rect(coords[0], coords[1], coords[2], coords[3]),0);
+ }
+ else if (strcmp(child.name(), "circle") == 0)
+ {
+ Real cx = child.attribute("cx").as_float();
+ Real cy = child.attribute("cy").as_float();
+ Real r = child.attribute("r").as_float();
+
+ Real x = (cx - r);
+ Real y = (cy - r);
+ TransformXYPair(x,y,transform);
+ Real w = Real(2)*r*transform.a; // width scales
+ Real h = Real(2)*r*transform.d; // height scales
+
+
+ Rect rect(x,y,w,h);
+ Add(CIRCLE_FILLED, rect,0);
+ Debug("Added Circle %s", rect.Str().c_str());
+ }
+ else if (strcmp(child.name(), "text") == 0)
+ {
+ Real x = child.attribute("x").as_float();
+ Real y = child.attribute("y").as_float();
+ TransformXYPair(x,y,transform);
+ Debug("Add text \"%s\"", child.child_value());
+ AddText(child.child_value(), 0.05, x, y);
+ }
+ }
+}
+
+void Document::ParseSVGStyleData(const string & style, map<string, string> & results)
+{
+ unsigned i = 0;
+ string key;
+ string value;
+ while (i < style.size() && GetKeyValuePair(style, key, value, i))
+ {
+ results[key] = value;
+ }
+}
+
+/**
+ * Parse an SVG string into a rectangle
+ */
+void Document::ParseSVG(const string & input, const Rect & bounds)
+{
+ using namespace pugi;
+
+ xml_document doc_xml;
+ xml_parse_result result = doc_xml.load(input.c_str());
+
+ if (!result)
+ Error("Couldn't parse SVG input - %s", result.description());
+
+ Debug("Loaded XML - %s", result.description());
+ SVGMatrix transform = {bounds.w, 0,bounds.x, 0,bounds.h,bounds.y};
+ ParseSVGNode(doc_xml, transform);
+}
+
+/**
+ * Load an SVG into a rectangle
+ */
+void Document::LoadSVG(const string & filename, const Rect & bounds)
+{
+ using namespace pugi;
+
+ xml_document doc_xml;
+ ifstream input(filename.c_str(), ios_base::in);
+ xml_parse_result result = doc_xml.load(input);
+
+ if (!result)
+ Error("Couldn't load \"%s\" - %s", filename.c_str(), result.description());
+
+ Debug("Loaded XML - %s", result.description());
+
+ input.close();
+ // a c e, b d f
+ SVGMatrix transform = {bounds.w, 0,bounds.x, 0,bounds.h,bounds.y};
+ ParseSVGNode(doc_xml, transform);
+}
+
+
+
+// Fear the wrath of the tokenizing svg data
+// Seriously this isn't really very DOM-like at all is it?
+pair<unsigned, unsigned> Document::ParseSVGPathData(const string & d, const SVGMatrix & transform, bool & closed)
+{
+ closed = false;
+ Real x[4] = {0,0,0,0};
+ Real y[4] = {0,0,0,0};
+
+ string token("");
+ string command("m");
+
+ Real x0(0);
+ Real y0(0);
+
+ unsigned i = 0;
+ unsigned prev_i = 0;
+
+ bool start = false;
+
+
+ static string delims("()[],{}<>;:=LlHhVvmMqQzZcC");
+
+ pair<unsigned, unsigned> range(m_count, m_count);
+
+ while (i < d.size() && GetToken(d, token, i, delims).size() > 0)
+ {
+ if (isalpha(token[0]))
+ command = token;
+ else
+ {
+ i = prev_i; // hax
+ if(command == "")
+ command = "L";
+ }
+
+ bool relative = islower(command[0]);
+
+ if (command == "m" || command == "M")
+ {
+ //Debug("Construct moveto command");
+ Real dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+ assert(GetToken(d,token,i,delims) == ",");
+ Real dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+
+ x[0] = (relative) ? x[0] + dx : dx;
+ y[0] = (relative) ? y[0] + dy : dy;
+
+ x0 = x[0];
+ y0 = y[0];
+ //Debug("mmoveto %f,%f", Float(x[0]),Float(y[0]));
+ command = (command == "m") ? "l" : "L";
+ }
+ else if (command == "c" || command == "C" || command == "q" || command == "Q")
+ {
+ //Debug("Construct curveto command");
+ Real dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+ assert(GetToken(d,token,i,delims) == ",");
+ Real dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+
+ x[1] = (relative) ? x[0] + dx : dx;
+ y[1] = (relative) ? y[0] + dy : dy;
+
+ dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+ assert(GetToken(d,token,i,delims) == ",");
+ dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+
+ x[2] = (relative) ? x[0] + dx : dx;
+ y[2] = (relative) ? y[0] + dy : dy;
+
+ if (command != "q" && command != "Q")
+ {
+ dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+ assert(GetToken(d,token,i,delims) == ",");
+ dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+ x[3] = (relative) ? x[0] + dx : dx;
+ y[3] = (relative) ? y[0] + dy : dy;
+ }
+ else
+ {
+ x[3] = x[2];
+ y[3] = y[2];
+ Real old_x1(x[1]), old_y1(y[1]);
+ x[1] = x[0] + Real(2) * (old_x1 - x[0])/ Real(3);
+ y[1] = y[0] + Real(2) * (old_y1 - y[0])/ Real(3);
+ x[2] = x[3] + Real(2) * (old_x1 - x[3])/ Real(3);
+ y[2] = y[3] + Real(2) * (old_y1 - y[3])/ Real(3);
+ }
+
+ Real x3(x[3]);
+ Real y3(y[3]);
+ for (int j = 0; j < 4; ++j)
+ TransformXYPair(x[j],y[j], transform);
+
+ range.second = AddBezier(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
+
+ //Debug("[%u] curveto %f,%f %f,%f %f,%f", index, Float(x[1]),Float(y[1]),Float(x[2]),Float(y[2]),Float(x[3]),Float(y[3]));
+
+ x[0] = x3;
+ y[0] = y3;
+
+
+ }
+ else if (command == "l" || command == "L" || command == "h" || command == "H" || command == "v" || command == "V")
+ {
+ //Debug("Construct lineto command, relative %d", relative);
+
+ Real dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+ Real dy;
+ if (command == "l" || command == "L")
+ {
+ assert(GetToken(d,token,i,delims) == ",");
+ dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+ }
+ else if (command == "v" || command == "V")
+ {
+ swap(dx,dy);
+ }
+
+ x[1] = (relative) ? x[0] + dx : dx;
+ y[1] = (relative) ? y[0] + dy : dy;
+ if (command == "v" || command == "V")
+ {
+ x[1] = x[0];
+ }
+ else if (command == "h" || command == "H")
+ {
+ y[1] = y[0];
+ }
+
+ Real x1(x[1]);
+ Real y1(y[1]);
+
+ TransformXYPair(x[0],y[0],transform);
+ TransformXYPair(x[1],y[1],transform);
+
+
+ range.second = AddBezier(Bezier(x[0],y[0],x[1],y[1],x[1],y[1],x[1],y[1]));
+
+ //Debug("[%u] lineto %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]));
+
+ x[0] = x1;
+ y[0] = y1;
+
+ }
+ else if (command == "z" || command == "Z")
+ {
+ //Debug("Construct returnto command");
+ x[1] = x0;
+ y[1] = y0;
+ x[2] = x0;
+ y[2] = y0;
+ x[3] = x0;
+ y[3] = y0;
+
+ Real x3(x[3]);
+ Real y3(y[3]);
+ for (int j = 0; j < 4; ++j)
+ TransformXYPair(x[j],y[j], transform);
+
+ range.second = AddBezier(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
+ //Debug("[%u] returnto %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]));
+
+ x[0] = x3;
+ y[0] = y3;
+ command = "m";
+ closed = true;
+ }
+ else
+ {
+ Warn("Unrecognised command \"%s\", set to \"m\"", command.c_str());
+ command = "m";
+ }
+
+ if (!start)
+ {
+ x0 = x[0];
+ y0 = y[0];
+ start = true;
+ }
+ prev_i = i;
+ }
+ return range;
+}
+
+void Document::SetFont(const string & font_filename)
+{
+ if (m_font_data != NULL)
+ {
+ free(m_font_data);
+ }
+
+ FILE *font_file = fopen(font_filename.c_str(), "rb");
+ fseek(font_file, 0, SEEK_END);
+ size_t font_file_size = ftell(font_file);
+ fseek(font_file, 0, SEEK_SET);
+ m_font_data = (unsigned char*)malloc(font_file_size);
+ size_t read = fread(m_font_data, 1, font_file_size, font_file);
+ if (read != font_file_size)
+ {
+ Fatal("Failed to read font data from \"%s\" - Read %u bytes expected %u - %s", font_filename.c_str(), read, font_file_size, strerror(errno));
+ }
+ fclose(font_file);
+ stbtt_InitFont(&m_font, m_font_data, 0);
+}
+
+void Document::AddText(const string & text, Real scale, Real x, Real y)
+{
+ if (m_font_data == NULL)
+ {
+ Warn("No font loaded");