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