src/document.cpp

   1 #include "document.h"
   2 #include "bezier.h"
   3 #include "profiler.h"
   4 #include <cstdio>
   5 #include <fstream>
   6
   7 #include "../contrib/pugixml-1.4/src/pugixml.cpp"
   8 #include "transformationtype.h"
   9
  10 #include "stb_truetype.h"
  11
  12 using namespace IPDF;
  13 using namespace std;
  14
  15 //TODO: Make this work for variable sized Reals
  16
  17 // Loads an std::vector<T> of size num_elements from a file.
  18 template<typename T>
  19 static void LoadStructVector(FILE *src_file, size_t num_elems, std::vector<T>& dest)
  20 {
  21         size_t structsread = 0;
  22         dest.resize(num_elems);
  23         structsread = fread(dest.data(), sizeof(T), num_elems, src_file);
  24         if (structsread != num_elems)
  25                 Fatal("Only read %u structs (expected %u)!", structsread, num_elems);
  26 }
  27
  28 // Saves an std::vector<T> to a file. Size must be saves separately.
  29 template<typename T>
  30 static void SaveStructVector(FILE *dst_file, std::vector<T>& src)
  31 {
  32         size_t written = 0;
  33         written = fwrite(src.data(), sizeof(T), src.size(), dst_file);
  34         if (written != src.size())
  35                 Fatal("Only wrote %u structs (expected %u)!", written, src.size());
  36 }
  37
  38 static void WriteChunkHeader(FILE *dst_file, DocChunkTypes type, uint32_t size)
  39 {
  40         size_t written = 0;
  41         written = fwrite(&type, sizeof(type), 1, dst_file);
  42         if (written != 1)
  43                 Fatal("Could not write Chunk header! (ID)");
  44         written = fwrite(&size, sizeof(size), 1, dst_file);
  45         if (written != 1)
  46                 Fatal("Could not write Chunk header (size)!");
  47 }
  48
  49 static bool ReadChunkHeader(FILE *src_file, DocChunkTypes& type, uint32_t& size)
  50 {
  51         if (fread(&type, sizeof(DocChunkTypes), 1, src_file) != 1)
  52                 return false;
  53         if (fread(&size, sizeof(uint32_t), 1, src_file) != 1)
  54                 return false;
  55         return true;
  56 }
  57
  58 void Document::Save(const string & filename)
  59 {
  60         Debug("Saving document to file \"%s\"...", filename.c_str());
  61         FILE * file = fopen(filename.c_str(), "w");
  62         if (file == NULL)
  63                 Fatal("Couldn't open file \"%s\" - %s", filename.c_str(), strerror(errno));
  64
  65         size_t written;
  66         Debug("Number of objects (%u)...", ObjectCount());
  67         WriteChunkHeader(file, CT_NUMOBJS, sizeof(m_count));
  68         written = fwrite(&m_count, sizeof(m_count), 1, file);
  69         if (written != 1)
  70                 Fatal("Failed to write number of objects!");
  71
  72         Debug("Object types...");
  73         WriteChunkHeader(file, CT_OBJTYPES, m_objects.types.size() * sizeof(ObjectType));
  74         SaveStructVector<ObjectType>(file, m_objects.types);
  75
  76         Debug("Object bounds...");
  77         WriteChunkHeader(file, CT_OBJBOUNDS, m_objects.bounds.size() * sizeof(Rect));
  78         SaveStructVector<Rect>(file, m_objects.bounds);
  79
  80         Debug("Object data indices...");
  81         WriteChunkHeader(file, CT_OBJINDICES, m_objects.data_indices.size() * sizeof(unsigned));
  82         SaveStructVector<unsigned>(file, m_objects.data_indices);
  83
  84         Debug("Bezier data...");
  85         WriteChunkHeader(file, CT_OBJBEZIERS, m_objects.beziers.size() * sizeof(uint8_t));
  86         SaveStructVector<Bezier>(file, m_objects.beziers);
  87
  88         int err = fclose(file);
  89         if (err != 0)
  90                 Fatal("Failed to close file \"%s\" - %s", filename.c_str(), strerror(err));
  91
  92         Debug("Successfully saved %u objects to \"%s\"", ObjectCount(), filename.c_str());
  93 }
  94
  95 #ifndef QUADTREE_DISABLED
  96
  97 void Document::GenBaseQuadtree()
  98 {
  99         m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QTC_UNKNOWN, 0, ObjectCount(), -1});
 100         m_quadtree.root_id = 0;
 101 }
 102
 103 int Document::ClipObjectToQuadChild(int object_id, QuadTreeNodeChildren type)
 104 {
 105         PROFILE_SCOPE("Document::ClipObjectToQuadChild");
 106         switch (m_objects.types[object_id])
 107         {
 108         case RECT_FILLED:
 109         case RECT_OUTLINE:
 110         case PATH:
 111                 {
 112                 Rect obj_bounds = TransformToQuadChild(m_objects.bounds[object_id], type);
 113                 if (obj_bounds.x < 0)
 114                 {
 115                         obj_bounds.w += obj_bounds.x;
 116                         obj_bounds.x = 0;
 117                 }
 118                 if (obj_bounds.y < 0)
 119                 {
 120                         obj_bounds.h += obj_bounds.y;
 121                         obj_bounds.y = 0;
 122                 }
 123                 if (obj_bounds.x + obj_bounds.w > 1)
 124                 {
 125                         obj_bounds.w += (1 - (obj_bounds.x + obj_bounds.w));
 126                 }
 127                 if (obj_bounds.y + obj_bounds.h > 1)
 128                 {
 129                         obj_bounds.h += (1 - (obj_bounds.y + obj_bounds.h));
 130                 }
 131                 m_objects.bounds.push_back(obj_bounds);
 132                 m_objects.types.push_back(m_objects.types[object_id]);
 133                 m_objects.data_indices.push_back(m_objects.data_indices[object_id]);
 134                 return 1;
 135                 }
 136         case BEZIER:
 137                 {
 138                 // If we're entirely within the quadtree node, no clipping need occur.
 139                 if (ContainedInQuadChild(m_objects.bounds[object_id], type))
 140                 {
 141                         m_objects.bounds.push_back(TransformToQuadChild(m_objects.bounds[object_id], type));
 142                         m_objects.types.push_back(m_objects.types[object_id]);
 143                         m_objects.data_indices.push_back(m_objects.data_indices[object_id]);
 144                         return 1;
 145                 }
 146                 Rect clip_bezier_bounds = TransformRectCoordinates(m_objects.bounds[object_id], TransformFromQuadChild(Rect{0,0,1,1}, type));
 147                 std::vector<Bezier> new_curves = m_objects.beziers[m_objects.data_indices[object_id]].ClipToRectangle(clip_bezier_bounds);
 148                 for (size_t i = 0; i < new_curves.size(); ++i)
 149                 {
 150                         Rect new_bounds = TransformToQuadChild(m_objects.bounds[object_id], type);
 151                         Bezier new_curve_data = new_curves[i].ToAbsolute(TransformToQuadChild(m_objects.bounds[object_id],type));
 152                         new_bounds = new_curve_data.SolveBounds();
 153                         Debug("New bounds: %s", new_bounds.Str().c_str());
 154                         new_curve_data = new_curve_data.ToRelative(new_bounds);
 155                         unsigned index = AddBezierData(new_curve_data);
 156                         m_objects.bounds.push_back(new_bounds);
 157                         m_objects.types.push_back(BEZIER);
 158                         m_objects.data_indices.push_back(index);
 159                 }
 160                 return new_curves.size();
 161                 }
 162         default:
 163                 Debug("Adding %s -> %s", m_objects.bounds[object_id].Str().c_str(), TransformToQuadChild(m_objects.bounds[object_id], type).Str().c_str());
 164                 m_objects.bounds.push_back(TransformToQuadChild(m_objects.bounds[object_id], type));
 165                 m_objects.types.push_back(m_objects.types[object_id]);
 166                 m_objects.data_indices.push_back(m_objects.data_indices[object_id]);
 167                 return 1;
 168         }
 169         return 0;
 170 }
 171 QuadTreeIndex Document::GenQuadChild(QuadTreeIndex parent, QuadTreeNodeChildren type)
 172 {
 173         PROFILE_SCOPE("Document::GenQuadChild()");
 174         QuadTreeIndex new_index = m_quadtree.nodes.size();
 175         Debug("-------------- Generating Quadtree Node %d (parent %d, type %d) ----------------------", new_index, parent, type);
 176         m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, parent, type, 0, 0, -1});
 177
 178         m_quadtree.nodes[new_index].object_begin = m_objects.bounds.size();
 179         for (QuadTreeIndex overlay = parent; overlay != -1; overlay = m_quadtree.nodes[overlay].next_overlay)
 180         {
 181                 for (unsigned i = m_quadtree.nodes[overlay].object_begin; i < m_quadtree.nodes[overlay].object_end; ++i)
 182                 {
 183                         if (IntersectsQuadChild(m_objects.bounds[i], type))
 184                         {
 185                                 m_count += ClipObjectToQuadChild(i, type);
 186                         }
 187                 }
 188         }
 189         m_quadtree.nodes[new_index].object_end = m_objects.bounds.size();
 190         // No objects are dirty.
 191         m_quadtree.nodes[new_index].object_dirty = m_objects.bounds.size();
 192         switch (type)
 193         {
 194                 case QTC_TOP_LEFT:
 195                         m_quadtree.nodes[parent].top_left = new_index;
 196                         break;
 197                 case QTC_TOP_RIGHT:
 198                         m_quadtree.nodes[parent].top_right = new_index;
 199                         break;
 200                 case QTC_BOTTOM_LEFT:
 201                         m_quadtree.nodes[parent].bottom_left = new_index;
 202                         break;
 203                 case QTC_BOTTOM_RIGHT:
 204                         m_quadtree.nodes[parent].bottom_right = new_index;
 205                         break;
 206                 default:
 207                         Fatal("Tried to add a QuadTree child of invalid type!");
 208         }
 209         return new_index;
 210 }
 211
 212 void Document::OverlayQuadChildren(QuadTreeIndex orig_parent, QuadTreeIndex parent, QuadTreeNodeChildren type)
 213 {
 214         PROFILE_SCOPE("Document::OverlayQuadChildren()");
 215         QuadTreeIndex new_index = m_quadtree.nodes.size();
 216         Debug("-------------- Generating Quadtree Node %d (orig %d parent %d, type %d) ----------------------", new_index, orig_parent, parent, type);
 217         m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, orig_parent, type, 0, 0, -1});
 218
 219         m_quadtree.nodes[new_index].object_begin = m_objects.bounds.size();
 220         for (unsigned i = m_quadtree.nodes[parent].object_dirty; i < m_quadtree.nodes[parent].object_end; ++i)
 221         {
 222                 if (IntersectsQuadChild(m_objects.bounds[i], type))
 223                 {
 224                         m_count += ClipObjectToQuadChild(i, type);
 225                 }
 226         }
 227         m_quadtree.nodes[new_index].object_end = m_objects.bounds.size();
 228         QuadTreeIndex orig_node = -1;
 229         switch (type)
 230         {
 231                 case QTC_TOP_LEFT:
 232                         orig_node = m_quadtree.nodes[orig_parent].top_left;
 233                         break;
 234                 case QTC_TOP_RIGHT:
 235                         orig_node = m_quadtree.nodes[orig_parent].top_right;
 236                         break;
 237                 case QTC_BOTTOM_LEFT:
 238                         orig_node = m_quadtree.nodes[orig_parent].bottom_left;
 239                         break;
 240                 case QTC_BOTTOM_RIGHT:
 241                         orig_node = m_quadtree.nodes[orig_parent].bottom_right;
 242                         break;
 243                 default:
 244                         Fatal("Tried to overlay a QuadTree child of invalid type!");
 245         }
 246         if (orig_node == -1)
 247                 Fatal("Tried to overlay a QuadTree child that didn't exist!");
 248
 249         // Add us to the node's overlay linked list.
 250         QuadTreeIndex prev_overlay = orig_node;
 251         while (m_quadtree.nodes[prev_overlay].next_overlay != -1) prev_overlay = m_quadtree.nodes[prev_overlay].next_overlay;
 252         Debug("- Original node %d, Previous overlay %d, new overlay %d", orig_node, prev_overlay, new_index);
 253         m_quadtree.nodes[prev_overlay].next_overlay = new_index;
 254
 255         // Recurse into any extant children.
 256         if (m_quadtree.nodes[orig_node].top_left != -1)
 257                 OverlayQuadChildren(orig_node, new_index, QTC_TOP_LEFT);
 258         if (m_quadtree.nodes[orig_node].top_right != -1)
 259                 OverlayQuadChildren(orig_node, new_index, QTC_TOP_RIGHT);
 260         if (m_quadtree.nodes[orig_node].bottom_left != -1)
 261                 OverlayQuadChildren(orig_node, new_index, QTC_BOTTOM_LEFT);
 262         if (m_quadtree.nodes[orig_node].bottom_right != -1)
 263                 OverlayQuadChildren(orig_node, new_index, QTC_BOTTOM_RIGHT);
 264
 265         m_quadtree.nodes[new_index].object_dirty = m_quadtree.nodes[new_index].object_end;
 266         m_quadtree.nodes[new_index].next_overlay = -1;
 267 }
 268
 269 void Document::PropagateQuadChanges(QuadTreeIndex node)
 270 {
 271         for(QuadTreeIndex overlay = node; overlay != -1; overlay = m_quadtree.nodes[overlay].next_overlay)
 272         {
 273                 // We don't care about clean overlays.
 274                 if (m_quadtree.nodes[overlay].object_dirty == m_quadtree.nodes[overlay].object_end) continue;
 275                 // Recurse into any extant children.
 276                 if (m_quadtree.nodes[node].top_left != -1)
 277                         OverlayQuadChildren(node, overlay, QTC_TOP_LEFT);
 278                 if (m_quadtree.nodes[node].top_right != -1)
 279                         OverlayQuadChildren(node, overlay, QTC_TOP_RIGHT);
 280                 if (m_quadtree.nodes[node].bottom_left != -1)
 281                         OverlayQuadChildren(node, overlay, QTC_BOTTOM_LEFT);
 282                 if (m_quadtree.nodes[node].bottom_right != -1)
 283                         OverlayQuadChildren(node, overlay, QTC_BOTTOM_RIGHT);
 284
 285                 m_quadtree.nodes[overlay].object_dirty = m_quadtree.nodes[overlay].object_end;
 286         }
 287 }
 288
 289 // Reparent a quadtree node, making it the "type" child of a new node.
 290 QuadTreeIndex Document::GenQuadParent(QuadTreeIndex child, QuadTreeNodeChildren type)
 291 {
 292         QuadTreeIndex new_index = m_quadtree.nodes.size();
 293         m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, -1, QTC_UNKNOWN, 0, 0, -1});
 294
 295         m_quadtree.nodes[new_index].object_begin = m_objects.bounds.size();
 296         for (QuadTreeIndex overlay = child; overlay != -1; overlay = m_quadtree.nodes[overlay].next_overlay)
 297         {
 298                 for (unsigned i = m_quadtree.nodes[overlay].object_begin; i < m_quadtree.nodes[overlay].object_end; ++i)
 299                 {
 300                         m_objects.bounds.push_back(TransformFromQuadChild(m_objects.bounds[i], type));
 301                         m_objects.types.push_back(m_objects.types[i]);
 302                         m_objects.data_indices.push_back(m_objects.data_indices[i]);
 303                         m_count++;
 304                 }
 305         }
 306         m_quadtree.nodes[new_index].object_end = m_objects.bounds.size();
 307         m_quadtree.nodes[new_index].object_dirty = m_objects.bounds.size();
 308         switch (type)
 309         {
 310                 case QTC_TOP_LEFT:
 311                         m_quadtree.nodes[new_index].top_left = child;
 312                         break;
 313                 case QTC_TOP_RIGHT:
 314                         m_quadtree.nodes[new_index].top_right = child;
 315                         break;
 316                 case QTC_BOTTOM_LEFT:
 317                         m_quadtree.nodes[new_index].bottom_left = child;
 318                         break;
 319                 case QTC_BOTTOM_RIGHT:
 320                         m_quadtree.nodes[new_index].bottom_right = child;
 321                         break;
 322                 default:
 323                         Fatal("Tried to add a QuadTree child of invalid type!");
 324         }
 325         return new_index;
 326 }
 327
 328 #endif
 329
 330 void Document::Load(const string & filename)
 331 {
 332         m_objects.bounds.clear();
 333         m_count = 0;
 334         if (filename == "")
 335         {
 336                 Debug("Loaded empty document.");
 337                 return;
 338         }
 339         Debug("Loading document from file \"%s\"", filename.c_str());
 340         FILE * file = fopen(filename.c_str(), "r");
 341         if (file == NULL)
 342                 Fatal("Couldn't open file \"%s\"", filename.c_str(), strerror(errno));
 343
 344         size_t read;
 345
 346         DocChunkTypes chunk_type;
 347         uint32_t chunk_size;
 348         while (ReadChunkHeader(file, chunk_type, chunk_size))
 349         {
 350                 switch(chunk_type)
 351                 {
 352                 case CT_NUMOBJS:
 353                         read = fread(&m_count, sizeof(m_count), 1, file);
 354                         if (read != 1)
 355                                 Fatal("Failed to read number of objects!");
 356                         Debug("Number of objects: %u", ObjectCount());
 357                         break;
 358                 case CT_OBJTYPES:
 359                         Debug("Object types...");
 360                         LoadStructVector<ObjectType>(file, chunk_size/sizeof(ObjectType), m_objects.types);
 361                         break;
 362                 case CT_OBJBOUNDS:
 363                         Debug("Object bounds...");
 364                         LoadStructVector<Rect>(file, chunk_size/sizeof(Rect), m_objects.bounds);
 365                         break;
 366                 case CT_OBJINDICES:
 367                         Debug("Object data indices...");
 368                         LoadStructVector<unsigned>(file, chunk_size/sizeof(unsigned), m_objects.data_indices);
 369                         break;
 370                 case CT_OBJBEZIERS:
 371                         Debug("Bezier data...");
 372                         LoadStructVector<Bezier>(file, chunk_size/sizeof(Bezier), m_objects.beziers);
 373                         break;
 374
 375                 case CT_OBJPATHS:
 376                         Debug("Path data...");
 377                         Warn("Not handled because lazy");
 378                         break;
 379                 }
 380         }
 381         Debug("Successfully loaded %u objects from \"%s\"", ObjectCount(), filename.c_str());
 382 #ifndef QUADTREE_DISABLED
 383         if (m_quadtree.root_id == QUADTREE_EMPTY)
 384         {
 385                 GenBaseQuadtree();
 386         }
 387 #endif
 388 }
 389
 390 unsigned Document::AddPath(unsigned start_index, unsigned end_index, const Colour & fill, const Colour & stroke)
 391 {
 392         Path path(m_objects, start_index, end_index, fill, stroke);
 393         unsigned data_index = AddPathData(path);
 394         Rect bounds = path.SolveBounds(m_objects);
 395         unsigned result = Add(PATH, bounds,data_index);
 396         m_objects.paths[data_index].m_index = result;
 397         //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);
 398         return result;
 399 }
 400
 401 /**
 402  * Add a Bezier using Absolute coords
 403  */
 404 unsigned Document::AddBezier(const Bezier & bezier)
 405 {
 406         Rect bounds = bezier.SolveBounds();
 407         Bezier data = bezier.ToRelative(bounds); // Relative
 408         if (data.ToAbsolute(bounds) != bezier)
 409         {
 410                 Warn("%s != %s", data.ToAbsolute(bounds).Str().c_str(),
 411                         bezier.Str().c_str());
 412                 Warn("ToAbsolute on ToRelative does not give original Bezier");
 413         }
 414         unsigned index = AddBezierData(data);
 415         return Add(BEZIER, bounds, index);
 416 }
 417
 418 unsigned Document::Add(ObjectType type, const Rect & bounds, unsigned data_index, QuadTreeIndex qti)
 419 {
 420         PROFILE_SCOPE("Document::Add");
 421         m_objects.types.push_back(type);
 422         m_objects.bounds.push_back(bounds);
 423         m_objects.data_indices.push_back(data_index);
 424 #ifndef QUADTREE_DISABLED
 425         if (qti == -1) qti = m_current_insert_node;
 426         if (qti != -1)
 427         {
 428                 QuadTreeIndex new_qti = qti;
 429                 while (m_quadtree.nodes[new_qti].next_overlay != -1)
 430                 {
 431                         if (m_count == m_quadtree.nodes[new_qti].object_end+1)
 432                         {
 433                                 m_quadtree.nodes[new_qti].object_end++;
 434                                 goto done;
 435                         }
 436                         new_qti = m_quadtree.nodes[new_qti].next_overlay;
 437                 }
 438                 {
 439                         QuadTreeIndex overlay = m_quadtree.nodes.size();
 440                         Debug("Adding new overlay, nqti = %d, overlay = %d", new_qti, overlay);
 441                         m_quadtree.nodes.push_back(m_quadtree.nodes[qti]);
 442                         m_quadtree.nodes[overlay].object_begin = m_count;
 443                         // All objects are dirty.
 444                         m_quadtree.nodes[overlay].object_dirty = m_count;
 445                         m_quadtree.nodes[overlay].object_end = m_count+1;
 446                         m_quadtree.nodes[overlay].next_overlay = -1;
 447                         m_quadtree.nodes[new_qti].next_overlay = overlay;
 448                         new_qti = overlay;
 449                 }
 450 done: // matches is not amused, but sulix is nice and moved it inside the #ifdef for him.
 451                 m_count++;
 452         }
 453         return m_count-1;
 454 #else // words fail me (still not amused)
 455         return (m_count++);
 456 #endif
 457
 458 }
 459
 460 unsigned Document::AddBezierData(const Bezier & bezier)
 461 {
 462         m_objects.beziers.push_back(bezier);
 463         return m_objects.beziers.size()-1;
 464 }
 465
 466 unsigned Document::AddPathData(const Path & path)
 467 {
 468         m_objects.paths.push_back(path);
 469         return m_objects.paths.size()-1;
 470 }
 471
 472 void Document::DebugDumpObjects()
 473 {
 474         Debug("Objects for Document %p are:", this);
 475         for (unsigned id = 0; id < ObjectCount(); ++id)
 476         {
 477                 Debug("%u. \tType: %u\tBounds: %s", id, m_objects.types[id], m_objects.bounds[id].Str().c_str());
 478         }
 479 }
 480
 481 bool Document::operator==(const Document & equ) const
 482 {
 483         return (ObjectCount() == equ.ObjectCount()
 484                 && memcmp(m_objects.bounds.data(), equ.m_objects.bounds.data(), ObjectCount() * sizeof(Rect)) == 0
 485                 && memcmp(m_objects.data_indices.data(), equ.m_objects.data_indices.data(), ObjectCount() * sizeof(unsigned)) == 0
 486                 && memcmp(m_objects.beziers.data(), equ.m_objects.beziers.data(), m_objects.beziers.size() * sizeof(Bezier)) == 0);
 487 }
 488
 489
 490
 491 // Behold my amazing tokenizing abilities
 492 static string & GetToken(const string & d, string & token, unsigned & i, const string & delims = "()[],{}<>;:=")
 493 {
 494         token.clear();
 495         while (i < d.size() && iswspace(d[i]))
 496         {
 497                 ++i;
 498         }
 499
 500         while (i < d.size())
 501         {
 502                 if (iswspace(d[i]) || strchr(delims.c_str(),d[i]) != NULL)
 503                 {
 504                         if (token.size() == 0 && !iswspace(d[i]))
 505                         {
 506                                 token += d[i++];
 507                         }
 508                         break;
 509                 }
 510                 token += d[i++];
 511         }
 512         //Debug("Got token \"%s\"", token.c_str());
 513         return token;
 514 }
 515
 516 static void GetXYPair(const string & d, Real & x, Real & y, unsigned & i,const string & delims = "()[],{}<>;:=")
 517 {
 518         string token("");
 519         while (GetToken(d, token, i, delims) == ",");
 520         x = RealFromStr(token);
 521         if (GetToken(d, token, i, delims) != ",")
 522         {
 523                 Fatal("Expected \",\" seperating x,y pair");
 524         }
 525         y = RealFromStr(GetToken(d,token,i,delims));
 526 }
 527
 528 static bool GetKeyValuePair(const string & d, string & key, string & value, unsigned & i, const string & delims = "()[],{}<>;:=")
 529 {
 530         key = "";
 531         string token;
 532         while (GetToken(d, token, i, delims) == ":" || token == ";");
 533         key = token;
 534         if (GetToken(d, token, i, delims) != ":")
 535         {
 536                 Error("Expected \":\" seperating key:value pair");
 537                 return false;
 538         }
 539         value = "";
 540         GetToken(d, value, i, delims);
 541         return true;
 542 }
 543
 544 static void TransformXYPair(Real & x, Real & y, const SVGMatrix & transform)
 545 {
 546         Real x0(x);
 547         x = transform.a * x + transform.c * y + transform.e;
 548         y = transform.b * x0 + transform.d * y + transform.f;
 549 }
 550
 551 void Document::ParseSVGTransform(const string & s, SVGMatrix & transform)
 552 {
 553         //Debug("Parsing transform %s", s.c_str());
 554         string token;
 555         string command;
 556         unsigned i = 0;
 557
 558         while (i < s.size())
 559         {
 560                 GetToken(s, command, i);
 561                 if (command == "," || command == "" || command == ":")
 562                 {
 563                         if (i < s.size())
 564                                 GetToken(s, command, i);
 565                         else
 566                                 return;
 567                 }
 568                 //Debug("Token is \"%s\"", command.c_str());
 569
 570                 SVGMatrix delta = {1,0,0,0,1,0};
 571
 572
 573                 assert(GetToken(s,token, i) == "(");
 574                 if (command == "translate")
 575                 {
 576                         GetXYPair(s, delta.e, delta.f, i);
 577                         assert(GetToken(s,token, i) == ")");
 578                 }
 579                 else if (command == "matrix")
 580                 {
 581                         GetXYPair(s, delta.a, delta.b,i);
 582                         GetXYPair(s, delta.c, delta.d,i);
 583                         GetXYPair(s, delta.e, delta.f,i);
 584                         assert(GetToken(s,token, i) == ")");
 585                 }
 586                 else if (command == "scale")
 587                 {
 588                         delta.a = RealFromStr(GetToken(s,token,i));
 589                         GetToken(s, token, i);
 590                         if (token == ",")
 591                         {
 592                                 delta.d = RealFromStr(GetToken(s,token,i));
 593                                 assert(GetToken(s, token, i) == ")");
 594                         }
 595                         else
 596                         {
 597                                 delta.d = delta.a;
 598                                 assert(token == ")");
 599                         }
 600
 601                 }
 602                 else
 603                 {
 604                         Warn("Unrecognised transform \"%s\", using identity", command.c_str());
 605                 }
 606
 607                 //Debug("Old transform is {%f,%f,%f,%f,%f,%f}", transform.a, transform.b, transform.c, transform.d,transform.e,transform.f);
 608                 //Debug("Delta transform is {%f,%f,%f,%f,%f,%f}", delta.a, delta.b, delta.c, delta.d,delta.e,delta.f);
 609
 610                 SVGMatrix old(transform);
 611                 transform.a = old.a * delta.a + old.c * delta.b;
 612                 transform.c = old.a * delta.c + old.c * delta.d;
 613                 transform.e = old.a * delta.e + old.c * delta.f + old.e;
 614
 615                 transform.b = old.b * delta.a + old.d * delta.b;
 616                 transform.d = old.b * delta.c + old.d * delta.d;
 617                 transform.f = old.b * delta.e + old.d * delta.f + old.f;
 618
 619                 //Debug("New transform is {%f,%f,%f,%f,%f,%f}", transform.a, transform.b, transform.c, transform.d,transform.e,transform.f);
 620         }
 621 }
 622
 623 inline Colour ParseColourString(const string & colour_str)
 624 {
 625         Colour c(0,0,0,0);
 626         if (colour_str == "red")
 627                 c = {255,0,0,255};
 628         else if (colour_str == "blue")
 629                 c = {0,0,255,255};
 630         else if (colour_str == "green")
 631                 c = {0,255,0,255};
 632         else if (colour_str == "black")
 633                 c = {0,0,0,255};
 634         else if (colour_str == "white")
 635                 c = {255,255,255,255};
 636         else if (colour_str.size() == 7 && colour_str[0] == '#')
 637         {
 638                 //Debug("Parse colour string: \"%s\"", colour_str.c_str());
 639                 char comp[3] = {colour_str[1], colour_str[2], '\0'};
 640                 c.r = strtoul(comp, NULL, 16);
 641                 comp[0] = colour_str[3]; comp[1] = colour_str[4];
 642                 c.g = strtoul(comp, NULL, 16);
 643                 comp[0] = colour_str[5]; comp[1] = colour_str[6];
 644                 c.b = strtoul(comp, NULL, 16);
 645                 c.a = 255;
 646                 //Debug("Colour is: %u, %u, %u, %u", c.r, c.g, c.b, c.a);
 647         }
 648         return c;
 649 }
 650
 651 void Document::ParseSVGNode(pugi::xml_node & root, SVGMatrix & parent_transform)
 652 {
 653         //Debug("Parse node <%s>", root.name());
 654
 655
 656         // Centre the SVGs
 657         if (strcmp(root.name(),"svg") == 0)
 658         {
 659                 Real ww = RealFromStr(root.attribute("width").as_string());
 660                 Real hh = RealFromStr(root.attribute("height").as_string());
 661                 parent_transform.e -= parent_transform.a * ww/Real(2);
 662                 parent_transform.f -= parent_transform.d * hh/Real(2);
 663         }
 664
 665         for (pugi::xml_node child = root.first_child(); child; child = child.next_sibling())
 666         {
 667                 SVGMatrix transform(parent_transform);
 668                 pugi::xml_attribute attrib_trans = child.attribute("transform");
 669                 if (!attrib_trans.empty())
 670                 {
 671                         ParseSVGTransform(attrib_trans.as_string(), transform);
 672                 }
 673
 674
 675
 676                 if (strcmp(child.name(), "svg") == 0 || strcmp(child.name(),"g") == 0
 677                         || strcmp(child.name(), "group") == 0)
 678                 {
 679
 680                         ParseSVGNode(child, transform);
 681                         continue;
 682                 }
 683                 else if (strcmp(child.name(), "path") == 0)
 684                 {
 685                         string d = child.attribute("d").as_string();
 686                         //Debug("Path data attribute is \"%s\"", d.c_str());
 687                         bool closed = false;
 688                         pair<unsigned, unsigned> range = ParseSVGPathData(d, transform, closed);
 689                         if (true && range.first < m_count && range.second < m_count)//(closed)
 690                         {
 691
 692                                 string colour_str("");
 693                                 map<string, string> style;
 694                                 if (child.attribute("style"))
 695                                 {
 696                                         ParseSVGStyleData(child.attribute("style").as_string(), style);
 697                                 }
 698
 699                                 // Determine shading colour
 700                                 if (child.attribute("fill"))
 701                                 {
 702                                         colour_str = child.attribute("fill").as_string();
 703                                 }
 704                                 else if (style.find("fill") != style.end())
 705                                 {
 706                                         colour_str = style["fill"];
 707                                 }
 708                                 Colour fill = ParseColourString(colour_str);
 709                                 Colour stroke = fill;
 710
 711                                 if (child.attribute("stroke"))
 712                                 {
 713                                         colour_str = child.attribute("stroke").as_string();
 714                                         stroke = ParseColourString(colour_str);
 715                                 }
 716                                 else if (style.find("stroke") != style.end())
 717                                 {
 718                                         colour_str = style["stroke"];
 719                                         stroke = ParseColourString(colour_str);
 720                                 }
 721
 722
 723                                 // Determin shading alpha
 724                                 if (child.attribute("fill-opacity"))
 725                                 {
 726                                         fill.a = 255*child.attribute("fill-opacity").as_float();
 727                                 }
 728                                 else if (style.find("fill-opacity") != style.end())
 729                                 {
 730                                         fill.a = 255*strtod(style["fill-opacity"].c_str(), NULL);
 731                                 }
 732                                 if (child.attribute("stroke-opacity"))
 733                                 {
 734                                         stroke.a = 255*child.attribute("stroke-opacity").as_float();
 735                                 }
 736                                 else if (style.find("stroke-opacity") != style.end())
 737                                 {
 738                                         stroke.a = 255*strtod(style["stroke-opacity"].c_str(), NULL);
 739                                 }
 740                                 AddPath(range.first, range.second, fill, stroke);
 741                         }
 742
 743                 }
 744                 else if (strcmp(child.name(), "line") == 0)
 745                 {
 746                         Real x0(child.attribute("x1").as_float());
 747                         Real y0(child.attribute("y1").as_float());
 748                         Real x1(child.attribute("x2").as_float());
 749                         Real y1(child.attribute("y2").as_float());
 750                         TransformXYPair(x0,y0,transform);
 751                         TransformXYPair(x1,y1,transform);
 752                         AddBezier(Bezier(x0,y0,x1,y1,x1,y1,x1,y1));
 753                 }
 754                 else if (strcmp(child.name(), "rect") == 0)
 755                 {
 756                         Real coords[4];
 757                         const char * attrib_names[] = {"x", "y", "width", "height"};
 758                         for (size_t i = 0; i < 4; ++i)
 759                                 coords[i] = child.attribute(attrib_names[i]).as_float();
 760
 761                         Real x2(coords[0]+coords[2]);
 762                         Real y2(coords[1]+coords[3]);
 763                         TransformXYPair(coords[0],coords[1],transform); // x, y, transform
 764                         TransformXYPair(x2,y2,transform);
 765                         coords[2] = x2 - coords[0];
 766                         coords[3] = y2 - coords[1];
 767
 768                         bool outline = !(child.attribute("fill") && strcmp(child.attribute("fill").as_string(),"none") != 0);
 769                         Add(outline?RECT_OUTLINE:RECT_FILLED, Rect(coords[0], coords[1], coords[2], coords[3]),0);
 770                 }
 771                 else if (strcmp(child.name(), "circle") == 0)
 772                 {
 773                         Real cx = child.attribute("cx").as_float();
 774                         Real cy = child.attribute("cy").as_float();
 775                         Real r = child.attribute("r").as_float();
 776
 777                         Real x = (cx - r);
 778                         Real y = (cy - r);
 779                         TransformXYPair(x,y,transform);
 780                         Real w = Real(2)*r*transform.a; // width scales
 781                         Real h = Real(2)*r*transform.d; // height scales
 782
 783
 784                         Rect rect(x,y,w,h);
 785                         Add(CIRCLE_FILLED, rect,0);
 786                         Debug("Added Circle %s", rect.Str().c_str());
 787                 }
 788                 else if (strcmp(child.name(), "text") == 0)
 789                 {
 790                         Real x = child.attribute("x").as_float();
 791                         Real y = child.attribute("y").as_float();
 792                         TransformXYPair(x,y,transform);
 793                         Debug("Add text \"%s\"", child.child_value());
 794                         AddText(child.child_value(), 0.05, x, y);
 795                 }
 796         }
 797 }
 798
 799 void Document::ParseSVGStyleData(const string & style, map<string, string> & results)
 800 {
 801         unsigned i = 0;
 802         string key;
 803         string value;
 804         while (i < style.size() && GetKeyValuePair(style, key, value, i))
 805         {
 806                 results[key] = value;
 807         }
 808 }
 809
 810 /**
 811  * Parse an SVG string into a rectangle
 812  */
 813 void Document::ParseSVG(const string & input, const Rect & bounds)
 814 {
 815         using namespace pugi;
 816
 817         xml_document doc_xml;
 818         xml_parse_result result = doc_xml.load(input.c_str());
 819
 820         if (!result)
 821                 Error("Couldn't parse SVG input - %s", result.description());
 822
 823         Debug("Loaded XML - %s", result.description());
 824         SVGMatrix transform = {bounds.w, 0,bounds.x, 0,bounds.h,bounds.y};
 825         ParseSVGNode(doc_xml, transform);
 826 }
 827
 828 /**
 829  * Load an SVG into a rectangle
 830  */
 831 void Document::LoadSVG(const string & filename, const Rect & bounds)
 832 {
 833         using namespace pugi;
 834
 835         xml_document doc_xml;
 836         ifstream input(filename.c_str(), ios_base::in);
 837         xml_parse_result result = doc_xml.load(input);
 838
 839         if (!result)
 840                 Error("Couldn't load \"%s\" - %s", filename.c_str(), result.description());
 841
 842         Debug("Loaded XML from \"%s\" - %s", filename.c_str(), result.description());
 843
 844         input.close();
 845                                                 // a c e, b d f
 846         SVGMatrix transform = {bounds.w,0 ,bounds.x, 0,bounds.h,bounds.y};
 847         ParseSVGNode(doc_xml, transform);
 848 }
 849
 850
 851
 852 // Fear the wrath of the tokenizing svg data
 853 // Seriously this isn't really very DOM-like at all is it?
 854 pair<unsigned, unsigned> Document::ParseSVGPathData(const string & d, const SVGMatrix & transform, bool & closed)
 855 {
 856         closed = false;
 857         Real x[4] = {0,0,0,0};
 858         Real y[4] = {0,0,0,0};
 859
 860         string token("");
 861         string command("m");
 862
 863         Real x0(0);
 864         Real y0(0);
 865
 866         unsigned i = 0;
 867         unsigned prev_i = 0;
 868
 869         bool start = false;
 870
 871
 872         static string delims("()[],{}<>;:=LlHhVvmMqQzZcC");
 873
 874         pair<unsigned, unsigned> range(m_count, m_count);
 875
 876         while (i < d.size() && GetToken(d, token, i, delims).size() > 0)
 877         {
 878                 if (isalpha(token[0]))
 879                         command = token;
 880                 else
 881                 {
 882                         i = prev_i; // hax
 883                         if(command == "")
 884                                 command = "L";
 885                 }
 886
 887                 bool relative = islower(command[0]);
 888
 889                 if (command == "m" || command == "M")
 890                 {
 891                         //Debug("Construct moveto command");
 892                         Real dx = RealFromStr(GetToken(d,token,i,delims));
 893                         assert(GetToken(d,token,i,delims) == ",");
 894                         Real dy = RealFromStr(GetToken(d,token,i,delims));
 895
 896                         x[0] = (relative) ? x[0] + dx : dx;
 897                         y[0] = (relative) ? y[0] + dy : dy;
 898
 899                         x0 = x[0];
 900                         y0 = y[0];
 901                         //Debug("mmoveto %f,%f", Float(x[0]),Float(y[0]));
 902                         command = (command == "m") ? "l" : "L";
 903                 }
 904                 else if (command == "c" || command == "C" || command == "q" || command == "Q")
 905                 {
 906                         //Debug("Construct curveto command");
 907                         Real dx = RealFromStr(GetToken(d,token,i,delims));
 908                         assert(GetToken(d,token,i,delims) == ",");
 909                         Real dy = RealFromStr(GetToken(d,token,i,delims));
 910
 911                         x[1] = (relative) ? x[0] + dx : dx;
 912                         y[1] = (relative) ? y[0] + dy : dy;
 913
 914                         dx = RealFromStr(GetToken(d,token,i,delims));
 915                         assert(GetToken(d,token,i,delims) == ",");
 916                         dy = RealFromStr(GetToken(d,token,i,delims));
 917
 918                         x[2] = (relative) ? x[0] + dx : dx;
 919                         y[2] = (relative) ? y[0] + dy : dy;
 920
 921                         if (command != "q" && command != "Q")
 922                         {
 923                                 dx = RealFromStr(GetToken(d,token,i,delims));
 924                                 assert(GetToken(d,token,i,delims) == ",");
 925                                 dy = RealFromStr(GetToken(d,token,i,delims));
 926                                 x[3] = (relative) ? x[0] + dx : dx;
 927                                 y[3] = (relative) ? y[0] + dy : dy;
 928                         }
 929                         else
 930                         {
 931                                 x[3] = x[2];
 932                                 y[3] = y[2];
 933                                 Real old_x1(x[1]), old_y1(y[1]);
 934                                 x[1] = x[0] + Real(2) * (old_x1 - x[0])/ Real(3);
 935                                 y[1] = y[0] + Real(2) * (old_y1 - y[0])/ Real(3);
 936                                 x[2] = x[3] + Real(2) * (old_x1 - x[3])/ Real(3);
 937                                 y[2] = y[3] + Real(2) * (old_y1 - y[3])/ Real(3);
 938                         }
 939
 940                         Real x3(x[3]);
 941                         Real y3(y[3]);
 942                         for (int j = 0; j < 4; ++j)
 943                                 TransformXYPair(x[j],y[j], transform);
 944
 945                         range.second = AddBezier(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
 946
 947                         //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]));
 948
 949                         x[0] = x3;
 950                         y[0] = y3;
 951
 952
 953                 }
 954                 else if (command == "l" || command == "L" || command == "h" || command == "H" || command == "v" || command == "V")
 955                 {
 956                         //Debug("Construct lineto command, relative %d", relative);
 957
 958                         Real dx = RealFromStr(GetToken(d,token,i,delims));
 959                         Real dy = 0;
 960                         if (command == "l" || command == "L")
 961                         {
 962                                 assert(GetToken(d,token,i,delims) == ",");
 963                                 dy = RealFromStr(GetToken(d,token,i,delims));
 964                         }
 965                         else if (command == "v" || command == "V")
 966                         {
 967                                 swap(dx,dy);
 968                         }
 969
 970                         x[1] = (relative) ? x[0] + dx : dx;
 971                         y[1] = (relative) ? y[0] + dy : dy;
 972                         if (command == "v" || command == "V")
 973                         {
 974                                 x[1] = x[0];
 975                         }
 976                         else if (command == "h" || command == "H")
 977                         {
 978                                 y[1] = y[0];
 979                         }
 980
 981                         Real x1(x[1]);
 982                         Real y1(y[1]);
 983
 984                         TransformXYPair(x[0],y[0],transform);
 985                         TransformXYPair(x[1],y[1],transform);
 986
 987
 988                         range.second = AddBezier(Bezier(x[0],y[0],x[1],y[1],x[1],y[1],x[1],y[1]));
 989
 990                         //Debug("[%u] lineto %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]));
 991
 992                         x[0] = x1;
 993                         y[0] = y1;
 994
 995                 }
 996                 else if (command == "z" || command == "Z")
 997                 {
 998                         //Debug("Construct returnto command");
 999                         x[1] = x0;
1000                         y[1] = y0;
1001                         x[2] = x0;
1002                         y[2] = y0;
1003                         x[3] = x0;
1004                         y[3] = y0;
1005
1006                         Real x3(x[3]);
1007                         Real y3(y[3]);
1008                         for (int j = 0; j < 4; ++j)
1009                                 TransformXYPair(x[j],y[j], transform);
1010
1011                         range.second = AddBezier(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
1012                         //Debug("[%u] returnto %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]));
1013
1014                         x[0] = x3;
1015                         y[0] = y3;
1016                         command = "m";
1017                         closed = true;
1018                 }
1019                 else
1020                 {
1021                         Warn("Unrecognised command \"%s\", set to \"m\"", command.c_str());
1022                         command = "m";
1023                 }
1024
1025                 if (!start)
1026                 {
1027                         x0 = x[0];
1028                         y0 = y[0];
1029                         start = true;
1030                 }
1031                 prev_i = i;
1032         }
1033         return range;
1034 }
1035
1036 void Document::SetFont(const string & font_filename)
1037 {
1038         if (m_font_data != NULL)
1039         {
1040                 free(m_font_data);
1041         }
1042
1043         FILE *font_file = fopen(font_filename.c_str(), "rb");
1044         fseek(font_file, 0, SEEK_END);
1045         size_t font_file_size = ftell(font_file);
1046         fseek(font_file, 0, SEEK_SET);
1047         m_font_data = (unsigned char*)malloc(font_file_size);
1048         size_t read = fread(m_font_data, 1, font_file_size, font_file);
1049         if (read != font_file_size)
1050         {
1051                 Fatal("Failed to read font data from \"%s\" - Read %u bytes expected %u - %s", font_filename.c_str(), read, font_file_size, strerror(errno));
1052         }
1053         fclose(font_file);
1054         stbtt_InitFont(&m_font, m_font_data, 0);
1055 }
1056
1057 void Document::AddText(const string & text, Real scale, Real x, Real y)
1058 {
1059         if (m_font_data == NULL)
1060         {
1061                 Warn("No font loaded");
1062                 return;
1063         }
1064
1065         Real x0(x);
1066         //Real y0(y);
1067         int ascent = 0, descent = 0, line_gap = 0;
1068         stbtt_GetFontVMetrics(&m_font, &ascent, &descent, &line_gap);
1069         Real font_scale = scale;
1070         font_scale /= Real(ascent - descent);
1071         Real y_advance = Real(font_scale) * Real(ascent - descent + line_gap);
1072         for (unsigned i = 0; i < text.size(); ++i)
1073         {
1074                 if (text[i] == '\n')
1075                 {
1076                         y += y_advance;
1077                         x = x0;
1078                 }
1079                 if (!isprint(text[i]))
1080                         continue;
1081
1082                 int advance_width = 0, left_side_bearing = 0, kerning = 0;
1083                 stbtt_GetCodepointHMetrics(&m_font, text[i], &advance_width, &left_side_bearing);
1084                 if (i >= 1)
1085                 {
1086                         kerning = stbtt_GetCodepointKernAdvance(&m_font, text[i-1], text[i]);
1087                 }
1088                 x += font_scale * Real(kerning);
1089                 AddFontGlyphAtPoint(&m_font, text[i], font_scale, x, y);
1090                 x += font_scale * Real(advance_width);
1091         }
1092 }
1093
1094 void Document::AddFontGlyphAtPoint(stbtt_fontinfo *font, int character, Real scale, Real x, Real y)
1095 {
1096         int glyph_index = stbtt_FindGlyphIndex(font, character);
1097
1098         // Check if there is actully a glyph to render.
1099         if (stbtt_IsGlyphEmpty(font, glyph_index))
1100         {
1101                 return;
1102         }
1103
1104         stbtt_vertex *instructions;
1105         int num_instructions = stbtt_GetGlyphShape(font, glyph_index, &instructions);
1106
1107         Real current_x(0), current_y(0);
1108         unsigned start_index = m_count;
1109         unsigned end_index = m_count;
1110         for (int i = 0; i < num_instructions; ++i)
1111         {
1112                 // TTF uses 16-bit signed ints for coordinates:
1113                 // with the y-axis inverted compared to us.
1114                 // Convert and scale any data.
1115                 Real inst_x = Real(instructions[i].x)*scale;
1116                 Real inst_y = Real(instructions[i].y)*-scale;
1117                 Real inst_cx = Real(instructions[i].cx)*scale;
1118                 Real inst_cy = Real(instructions[i].cy)*-scale;
1119                 Real old_x(current_x), old_y(current_y);
1120                 current_x = inst_x;
1121                 current_y = inst_y;
1122
1123                 switch(instructions[i].type)
1124                 {
1125                 // Move To
1126                 case STBTT_vmove:
1127                         break;
1128                 // Line To
1129                 case STBTT_vline:
1130                         end_index = AddBezier(Bezier(old_x + x, old_y + y, old_x + x, old_y + y, current_x + x, current_y + y, current_x + x, current_y + y));
1131                         break;
1132                 // Quadratic Bezier To:
1133                 case STBTT_vcurve:
1134                         // Quadratic -> Cubic:
1135                         // - Endpoints are the same.
1136                         // - cubic1 = quad0+(2/3)*(quad1-quad0)
1137                         // - cubic2 = quad2+(2/3)*(quad1-quad2)
1138                         end_index = AddBezier(Bezier(old_x + x, old_y + y, old_x + Real(2)*(inst_cx-old_x)/Real(3) + x, old_y + Real(2)*(inst_cy-old_y)/Real(3) + y,
1139                                                 current_x + Real(2)*(inst_cx-current_x)/Real(3) + x, current_y + Real(2)*(inst_cy-current_y)/Real(3) + y, current_x + x, current_y + y));
1140                         break;
1141                 }
1142         }
1143
1144         if (start_index < m_count && end_index < m_count)
1145         {
1146                 AddPath(start_index, end_index);
1147         }
1148         //Debug("Added Glyph \"%c\" at %f %f, scale %f", (char)character, Float(x), Float(y), Float(scale));
1149
1150         stbtt_FreeShape(font, instructions);
1151 }
1152
1153 void Document::TransformObjectBounds(const SVGMatrix & transform, ObjectType type)
1154 {
1155         #ifdef TRANSFORM_BEZIERS_TO_PATH
1156                 for (unsigned i = 0; i < m_objects.paths.size(); ++i)
1157                 {
1158                         Path & p = m_objects.paths[i];
1159                         p.m_bounds.x = transform.a * p.m_bounds.x + transform.e;
1160                         p.m_bounds.y = transform.d * p.m_bounds.y + transform.f;
1161                         p.m_bounds.w *= transform.a;
1162                         p.m_bounds.h *= transform.d;
1163                 }
1164                 return;
1165         #endif
1166
1167         for (unsigned i = 0; i < m_count; ++i)
1168         {
1169                 if (type == NUMBER_OF_OBJECT_TYPES || m_objects.types[i] == type)
1170                 {
1171                         TransformXYPair(m_objects.bounds[i].x, m_objects.bounds[i].y, transform);
1172                         m_objects.bounds[i].w *= transform.a;
1173                         m_objects.bounds[i].h *= transform.d;
1174                 }
1175         }
1176 }
1177
1178 void Document::TranslateObjects(const Real & dx, const Real & dy, ObjectType type)
1179 {
1180         #ifdef TRANSFORM_BEZIERS_TO_PATH
1181         for (unsigned i = 0; i < m_objects.paths.size(); ++i)
1182         {
1183                 Path & p = m_objects.paths[i];
1184                 p.m_bounds.x += dx;
1185                 p.m_bounds.y += dy;
1186         }
1187         return;
1188         #endif
1189
1190         for (unsigned i = 0; i < m_count; ++i)
1191         {
1192                 if (type == NUMBER_OF_OBJECT_TYPES || m_objects.types[i] == type)
1193                 {
1194                         m_objects.bounds[i].x += dx;
1195                         m_objects.bounds[i].y += dy;
1196                 }
1197         }
1198 }
1199
1200 void Document::ScaleObjectsAboutPoint(const Real & x, const Real & y, const Real & scale_amount, ObjectType type)
1201 {
1202         #ifdef TRANSFORM_BEZIERS_TO_PATH
1203                 for (unsigned i = 0; i < m_objects.paths.size(); ++i)
1204                 {
1205                         Path & p = m_objects.paths[i];
1206                         p.m_bounds.w /= scale_amount;
1207                         p.m_bounds.h /= scale_amount;
1208                         p.m_bounds.x -= x;
1209                         p.m_bounds.x /= scale_amount;
1210                         p.m_bounds.x += x;
1211                         p.m_bounds.y -= y;
1212                         p.m_bounds.y /= scale_amount;
1213                         p.m_bounds.y += y;
1214                 }
1215                 return;
1216         #endif
1217
1218         for (unsigned i = 0; i < m_count; ++i)
1219         {
1220                 if (type != NUMBER_OF_OBJECT_TYPES && m_objects.types[i] != type)
1221                         continue;
1222
1223                 m_objects.bounds[i].w /= scale_amount;
1224                 m_objects.bounds[i].h /= scale_amount;
1225                 //m_objects.bounds[i].x = x + (m_objects.bounds[i].x-x)/scale_amount;
1226                 //m_objects.bounds[i].y = y + (m_objects.bounds[i].y-x)/scale_amount;
1227                 m_objects.bounds[i].x -= x;
1228                 m_objects.bounds[i].x /= scale_amount;
1229                 m_objects.bounds[i].x += x;
1230
1231                 m_objects.bounds[i].y -= y;
1232                 m_objects.bounds[i].y /= scale_amount;
1233                 m_objects.bounds[i].y += y;
1234         }
1235
1236 }
1237
1238