src/document.cpp

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