9 //TODO: Make this work for variable sized Reals
11 // Loads an std::vector<T> of size num_elements from a file.
13 static void LoadStructVector(FILE *src_file, size_t num_elems, std::vector<T>& dest)
15 size_t structsread = 0;
16 dest.resize(num_elems);
17 structsread = fread(dest.data(), sizeof(T), num_elems, src_file);
18 if (structsread != num_elems)
19 Fatal("Only read %u structs (expected %u)!", structsread, num_elems);
22 // Saves an std::vector<T> to a file. Size must be saves separately.
24 static void SaveStructVector(FILE *dst_file, std::vector<T>& src)
27 written = fwrite(src.data(), sizeof(T), src.size(), dst_file);
28 if (written != src.size())
29 Fatal("Only wrote %u structs (expected %u)!", written, src.size());
32 static void WriteChunkHeader(FILE *dst_file, DocChunkTypes type, uint32_t size)
35 written = fwrite(&type, sizeof(type), 1, dst_file);
37 Fatal("Could not write Chunk header! (ID)");
38 written = fwrite(&size, sizeof(size), 1, dst_file);
40 Fatal("Could not write Chunk header (size)!");
43 static bool ReadChunkHeader(FILE *src_file, DocChunkTypes& type, uint32_t& size)
45 if (fread(&type, sizeof(DocChunkTypes), 1, src_file) != 1)
47 if (fread(&size, sizeof(uint32_t), 1, src_file) != 1)
52 void Document::Save(const string & filename)
54 Debug("Saving document to file \"%s\"...", filename.c_str());
55 FILE * file = fopen(filename.c_str(), "w");
57 Fatal("Couldn't open file \"%s\" - %s", filename.c_str(), strerror(errno));
60 Debug("Number of objects (%u)...", ObjectCount());
61 WriteChunkHeader(file, CT_NUMOBJS, sizeof(m_count));
62 written = fwrite(&m_count, sizeof(m_count), 1, file);
64 Fatal("Failed to write number of objects!");
66 Debug("Object types...");
67 WriteChunkHeader(file, CT_OBJTYPES, m_objects.types.size() * sizeof(ObjectType));
68 SaveStructVector<ObjectType>(file, m_objects.types);
70 Debug("Object bounds...");
71 WriteChunkHeader(file, CT_OBJBOUNDS, m_objects.bounds.size() * sizeof(Rect));
72 SaveStructVector<Rect>(file, m_objects.bounds);
74 Debug("Object data indices...");
75 WriteChunkHeader(file, CT_OBJINDICES, m_objects.data_indices.size() * sizeof(unsigned));
76 SaveStructVector<unsigned>(file, m_objects.data_indices);
78 Debug("Bezier data...");
79 WriteChunkHeader(file, CT_OBJBEZIERS, m_objects.beziers.size() * sizeof(uint8_t));
80 SaveStructVector<Bezier>(file, m_objects.beziers);
82 int err = fclose(file);
84 Fatal("Failed to close file \"%s\" - %s", filename.c_str(), strerror(err));
86 Debug("Successfully saved %u objects to \"%s\"", ObjectCount(), filename.c_str());
89 #ifndef QUADTREE_DISABLED
91 void Document::GenBaseQuadtree()
93 m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QTC_UNKNOWN, 0, ObjectCount()});
94 m_quadtree.root_id = 0;
95 GenQuadChild(0, QTC_TOP_LEFT);
96 GenQuadParent(0, QTC_BOTTOM_RIGHT);
99 QuadTreeIndex Document::GenQuadChild(QuadTreeIndex parent, QuadTreeNodeChildren type)
101 QuadTreeIndex new_index = m_quadtree.nodes.size();
102 m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, parent, type, 0, 0});
104 m_quadtree.nodes[new_index].object_begin = m_objects.bounds.size();
105 for (unsigned i = m_quadtree.nodes[parent].object_begin; i < m_quadtree.nodes[parent].object_end; ++i)
107 if (ContainedInQuadChild(m_objects.bounds[i], type))
109 m_objects.bounds.push_back(TransformToQuadChild(m_objects.bounds[i], type));
110 m_objects.types.push_back(m_objects.types[i]);
111 m_objects.data_indices.push_back(m_objects.data_indices[i]);
115 m_quadtree.nodes[new_index].object_end = m_objects.bounds.size();
119 m_quadtree.nodes[parent].top_left = new_index;
122 m_quadtree.nodes[parent].top_right = new_index;
124 case QTC_BOTTOM_LEFT:
125 m_quadtree.nodes[parent].bottom_left = new_index;
127 case QTC_BOTTOM_RIGHT:
128 m_quadtree.nodes[parent].bottom_right = new_index;
131 Fatal("Tried to add a QuadTree child of invalid type!");
136 // Reparent a quadtree node, making it the "type" child of a new node.
137 QuadTreeIndex Document::GenQuadParent(QuadTreeIndex child, QuadTreeNodeChildren type)
139 QuadTreeIndex new_index = m_quadtree.nodes.size();
140 m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, -1, QTC_UNKNOWN, 0, 0});
142 m_quadtree.nodes[new_index].object_begin = m_objects.bounds.size();
143 for (unsigned i = m_quadtree.nodes[child].object_begin; i < m_quadtree.nodes[child].object_end; ++i)
145 m_objects.bounds.push_back(TransformFromQuadChild(m_objects.bounds[i], type));
146 m_objects.types.push_back(m_objects.types[i]);
147 m_objects.data_indices.push_back(m_objects.data_indices[i]);
150 m_quadtree.nodes[new_index].object_end = m_objects.bounds.size();
154 m_quadtree.nodes[new_index].top_left = child;
157 m_quadtree.nodes[new_index].top_right = child;
159 case QTC_BOTTOM_LEFT:
160 m_quadtree.nodes[new_index].bottom_left = child;
162 case QTC_BOTTOM_RIGHT:
163 m_quadtree.nodes[new_index].bottom_right = child;
166 Fatal("Tried to add a QuadTree child of invalid type!");
173 void Document::Load(const string & filename)
175 m_objects.bounds.clear();
179 Debug("Loaded empty document.");
182 Debug("Loading document from file \"%s\"", filename.c_str());
183 FILE * file = fopen(filename.c_str(), "r");
185 Fatal("Couldn't open file \"%s\"", filename.c_str(), strerror(errno));
189 DocChunkTypes chunk_type;
191 while (ReadChunkHeader(file, chunk_type, chunk_size))
196 read = fread(&m_count, sizeof(m_count), 1, file);
198 Fatal("Failed to read number of objects!");
199 Debug("Number of objects: %u", ObjectCount());
202 Debug("Object types...");
203 LoadStructVector<ObjectType>(file, chunk_size/sizeof(ObjectType), m_objects.types);
206 Debug("Object bounds...");
207 LoadStructVector<Rect>(file, chunk_size/sizeof(Rect), m_objects.bounds);
210 Debug("Object data indices...");
211 LoadStructVector<unsigned>(file, chunk_size/sizeof(unsigned), m_objects.data_indices);
214 Debug("Bezier data...");
215 LoadStructVector<Bezier>(file, chunk_size/sizeof(Bezier), m_objects.beziers);
219 Debug("Successfully loaded %u objects from \"%s\"", ObjectCount(), filename.c_str());
220 #ifndef QUADTREE_DISABLED
221 if (m_quadtree.root_id == QUADTREE_EMPTY)
228 void Document::Add(ObjectType type, const Rect & bounds, unsigned data_index)
230 m_objects.types.push_back(type);
231 m_objects.bounds.push_back(bounds);
232 m_objects.data_indices.push_back(data_index);
233 ++m_count; // Why can't we just use the size of types or something?
236 unsigned Document::AddBezierData(const Bezier & bezier)
238 m_objects.beziers.push_back(bezier);
239 return m_objects.beziers.size()-1;
243 void Document::DebugDumpObjects()
245 Debug("Objects for Document %p are:", this);
246 for (unsigned id = 0; id < ObjectCount(); ++id)
248 Debug("%u. \tType: %u\tBounds: %s", id, m_objects.types[id], m_objects.bounds[id].Str().c_str());
252 bool Document::operator==(const Document & equ) const
254 return (ObjectCount() == equ.ObjectCount()
255 && memcmp(m_objects.bounds.data(), equ.m_objects.bounds.data(), ObjectCount() * sizeof(Rect)) == 0
256 && memcmp(m_objects.data_indices.data(), equ.m_objects.data_indices.data(), ObjectCount() * sizeof(unsigned)) == 0
257 && memcmp(m_objects.beziers.data(), equ.m_objects.beziers.data(), m_objects.beziers.size() * sizeof(Bezier)) == 0);
261 #include "../contrib/pugixml-1.4/src/pugixml.hpp"
262 #include "../contrib/pugixml-1.4/src/pugixml.cpp"
265 * Load an SVG into a rectangle
267 void Document::LoadSVG(const string & filename, const Rect & bounds)
269 using namespace pugi;
271 xml_document doc_xml;
272 ifstream input(filename.c_str(), ios_base::in);
273 xml_parse_result result = doc_xml.load(input);
276 Fatal("Couldn't load \"%s\" - %s", filename.c_str(), result.description());
278 Debug("Loaded XML - %s", result.description());
282 // Combine all SVG tags into one thing because lazy
283 for (xml_node svg = doc_xml.child("svg"); svg; svg = svg.next_sibling("svg"))
285 Real width = svg.attribute("width").as_float() * bounds.w;
286 Real height = svg.attribute("width").as_float() * bounds.h;
291 const char * attrib_names[] = {"x", "y", "width", "height"};
292 for (pugi::xml_node rect = svg.child("rect"); rect; rect = rect.next_sibling("rect"))
294 for (size_t i = 0; i < 4; ++i)
295 coords[i] = rect.attribute(attrib_names[i]).as_float();
297 bool outline = !(rect.attribute("fill"));
298 Add(outline?RECT_OUTLINE:RECT_FILLED, Rect(coords[0]/width + bounds.x, coords[1]/height + bounds.y, coords[2]/width, coords[3]/height),0);
299 Debug("Added rectangle");
303 for (pugi::xml_node circle = svg.child("circle"); circle; circle = circle.next_sibling("circle"))
305 Real cx = circle.attribute("cx").as_float();
306 Real cy = circle.attribute("cy").as_float();
307 Real r = circle.attribute("r").as_float();
309 Real x = (cx - r)/width + bounds.x;
310 Real y = (cy - r)/height + bounds.y;
315 Add(CIRCLE_FILLED, rect,0);
316 Debug("Added Circle %s", rect.Str().c_str());
321 for (pugi::xml_node path = svg.child("path"); path; path = path.next_sibling("path"))
324 string d = path.attribute("d").as_string();
325 Debug("Path data attribute is \"%s\"", d.c_str());
326 AddPathFromString(d, Rect(bounds.x,bounds.y,width,height));
337 // Behold my amazing tokenizing abilities
338 static string & GetToken(const string & d, string & token, unsigned & i)
341 while (i < d.size() && iswspace(d[i]))
348 if (d[i] == ',' || (isalpha(d[i]) && d[i] != 'e') || iswspace(d[i]))
350 if (token.size() == 0 && !iswspace(d[i]))
358 Debug("Got token \"%s\"", token.c_str());
363 // Fear the wrath of the tokenizing svg data
364 // Seriously this isn't really very DOM-like at all is it?
365 void Document::AddPathFromString(const string & d, const Rect & bounds)
367 Real x[4] = {0,0,0,0};
368 Real y[4] = {0,0,0,0};
381 while (i < d.size() && GetToken(d, token, i).size() > 0)
383 if (isalpha(token[0]))
392 bool relative = islower(command[0]);
394 if (command == "m" || command == "M")
396 Debug("Construct moveto command");
397 Real dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
398 assert(GetToken(d,token,i) == ",");
399 Real dy = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
401 x[0] = (relative) ? x[0] + dx : dx;
402 y[0] = (relative) ? y[0] + dy : dy;
406 Debug("mmoveto %f,%f", Float(x[0]),Float(y[0]));
407 command = (command == "m") ? "l" : "L";
409 else if (command == "c" || command == "C" || command == "q" || command == "Q")
411 Debug("Construct curveto command");
412 Real dx = strtod(GetToken(d,token,i).c_str(),NULL)/bounds.w;
413 assert(GetToken(d,token,i) == ",");
414 Real dy = strtod(GetToken(d,token,i).c_str(),NULL)/bounds.h;
416 x[1] = (relative) ? x[0] + dx : dx;
417 y[1] = (relative) ? y[0] + dy : dy;
419 dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
420 assert(GetToken(d,token,i) == ",");
421 dy = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
423 x[2] = (relative) ? x[0] + dx : dx;
424 y[2] = (relative) ? y[0] + dy : dy;
426 if (command != "q" && command != "Q")
428 dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
429 assert(GetToken(d,token,i) == ",");
430 dy = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
431 x[3] = (relative) ? x[0] + dx : dx;
432 y[3] = (relative) ? y[0] + dy : dy;
440 unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
441 Add(BEZIER,Rect(0,0,1,1),index);
444 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]));
451 else if (command == "l" || command == "L")
453 Debug("Construct lineto command");
455 Real dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
456 assert(GetToken(d,token,i) == ",");
457 Real dy = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
459 x[1] = (relative) ? x0 + dx : dx;
460 y[1] = (relative) ? y0 + dy : dy;
468 unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
469 Add(BEZIER,Rect(0,0,1,1),index);
471 Debug("[%u] lineto %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]));
477 else if (command == "z" || command == "Z")
479 Debug("Construct returnto command");
487 unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
488 Add(BEZIER,Rect(0,0,1,1),index);
490 Debug("[%u] returnto %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]));
498 Warn("Unrecognised command \"%s\", set to \"m\"", command.c_str());