#include "document.h"
-
+#include "bezier.h"
#include <cstdio>
+#include <fstream>
using namespace IPDF;
using namespace std;
+//TODO: Make this work for variable sized Reals
+
+// Loads an std::vector<T> of size num_elements from a file.
+template<typename T>
+static void LoadStructVector(FILE *src_file, size_t num_elems, std::vector<T>& dest)
+{
+ size_t structsread = 0;
+ dest.resize(num_elems);
+ structsread = fread(dest.data(), sizeof(T), num_elems, src_file);
+ if (structsread != num_elems)
+ Fatal("Only read %u structs (expected %u)!", structsread, num_elems);
+}
+
+// Saves an std::vector<T> to a file. Size must be saves separately.
+template<typename T>
+static void SaveStructVector(FILE *dst_file, std::vector<T>& src)
+{
+ size_t written = 0;
+ written = fwrite(src.data(), sizeof(T), src.size(), dst_file);
+ if (written != src.size())
+ Fatal("Only wrote %u structs (expected %u)!", written, src.size());
+}
+
+static void WriteChunkHeader(FILE *dst_file, DocChunkTypes type, uint32_t size)
+{
+ size_t written = 0;
+ written = fwrite(&type, sizeof(type), 1, dst_file);
+ if (written != 1)
+ Fatal("Could not write Chunk header! (ID)");
+ written = fwrite(&size, sizeof(size), 1, dst_file);
+ if (written != 1)
+ Fatal("Could not write Chunk header (size)!");
+}
+
+static bool ReadChunkHeader(FILE *src_file, DocChunkTypes& type, uint32_t& size)
+{
+ if (fread(&type, sizeof(DocChunkTypes), 1, src_file) != 1)
+ return false;
+ if (fread(&size, sizeof(uint32_t), 1, src_file) != 1)
+ return false;
+ return true;
+}
+
void Document::Save(const string & filename)
{
Debug("Saving document to file \"%s\"...", filename.c_str());
size_t written;
Debug("Number of objects (%u)...", ObjectCount());
+ WriteChunkHeader(file, CT_NUMOBJS, sizeof(m_count));
written = fwrite(&m_count, sizeof(m_count), 1, file);
if (written != 1)
Fatal("Failed to write number of objects!");
+ Debug("Object types...");
+ WriteChunkHeader(file, CT_OBJTYPES, m_objects.types.size() * sizeof(ObjectType));
+ SaveStructVector<ObjectType>(file, m_objects.types);
+
Debug("Object bounds...");
- written = fwrite(m_objects.bounds.data(), sizeof(Rect), m_objects.bounds.size(), file);
- if (written != ObjectCount())
- Fatal("Only wrote %u objects!", written);
+ WriteChunkHeader(file, CT_OBJBOUNDS, m_objects.bounds.size() * sizeof(Rect));
+ SaveStructVector<Rect>(file, m_objects.bounds);
+
+ Debug("Object data indices...");
+ WriteChunkHeader(file, CT_OBJINDICES, m_objects.data_indices.size() * sizeof(unsigned));
+ SaveStructVector<unsigned>(file, m_objects.data_indices);
+
+ Debug("Bezier data...");
+ WriteChunkHeader(file, CT_OBJBEZIERS, m_objects.beziers.size() * sizeof(uint8_t));
+ SaveStructVector<Bezier>(file, m_objects.beziers);
int err = fclose(file);
if (err != 0)
Debug("Successfully saved %u objects to \"%s\"", ObjectCount(), filename.c_str());
}
+#ifndef QUADTREE_DISABLED
+
+void Document::GenBaseQuadtree()
+{
+ m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QTC_UNKNOWN, 0, ObjectCount()});
+ m_quadtree.root_id = 0;
+ GenQuadNode(0, QTC_TOP_LEFT);
+}
+
+QuadTreeIndex Document::GenQuadNode(QuadTreeIndex parent, QuadTreeNodeChildren type)
+{
+ QuadTreeIndex new_index = m_quadtree.nodes.size();
+ m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, parent, type, 0, 0});
+
+ m_quadtree.nodes[new_index].object_begin = m_objects.bounds.size();
+ for (unsigned i = m_quadtree.nodes[parent].object_begin; i < m_quadtree.nodes[parent].object_end; ++i)
+ {
+ if (ContainedInQuadChild(m_objects.bounds[i], type))
+ {
+ m_objects.bounds.push_back(TransformToQuadChild(m_objects.bounds[i], type));
+ m_objects.types.push_back(m_objects.types[i]);
+ m_objects.data_indices.push_back(m_objects.data_indices[i]);
+ m_count++;
+ }
+ }
+ m_quadtree.nodes[new_index].object_end = m_objects.bounds.size();
+ switch (type)
+ {
+ case QTC_TOP_LEFT:
+ m_quadtree.nodes[parent].top_left = new_index;
+ break;
+ case QTC_TOP_RIGHT:
+ m_quadtree.nodes[parent].top_right = new_index;
+ break;
+ case QTC_BOTTOM_LEFT:
+ m_quadtree.nodes[parent].bottom_left = new_index;
+ break;
+ case QTC_BOTTOM_RIGHT:
+ m_quadtree.nodes[parent].bottom_right = new_index;
+ break;
+ default:
+ Fatal("Tried to add a QuadTree child of invalid type!");
+ }
+ return new_index;
+}
+
+#endif
+
void Document::Load(const string & filename)
{
m_objects.bounds.clear();
Fatal("Couldn't open file \"%s\"", filename.c_str(), strerror(errno));
size_t read;
- read = fread(&m_count, sizeof(m_count), 1, file);
- if (read != 1)
- Fatal("Failed to read number of objects!");
- Debug("Number of objects: %u", ObjectCount());
- m_objects.bounds.resize(ObjectCount());
-
- Debug("Object bounds...");
- read = fread(m_objects.bounds.data(), sizeof(Rect), m_objects.bounds.size(), file);
- if (read != ObjectCount())
- Fatal("Only read %u objects!", read);
-
+ DocChunkTypes chunk_type;
+ uint32_t chunk_size;
+ while (ReadChunkHeader(file, chunk_type, chunk_size))
+ {
+ switch(chunk_type)
+ {
+ case CT_NUMOBJS:
+ read = fread(&m_count, sizeof(m_count), 1, file);
+ if (read != 1)
+ Fatal("Failed to read number of objects!");
+ Debug("Number of objects: %u", ObjectCount());
+ break;
+ case CT_OBJTYPES:
+ Debug("Object types...");
+ LoadStructVector<ObjectType>(file, chunk_size/sizeof(ObjectType), m_objects.types);
+ break;
+ case CT_OBJBOUNDS:
+ Debug("Object bounds...");
+ LoadStructVector<Rect>(file, chunk_size/sizeof(Rect), m_objects.bounds);
+ break;
+ case CT_OBJINDICES:
+ Debug("Object data indices...");
+ LoadStructVector<unsigned>(file, chunk_size/sizeof(unsigned), m_objects.data_indices);
+ break;
+ case CT_OBJBEZIERS:
+ Debug("Bezier data...");
+ LoadStructVector<Bezier>(file, chunk_size/sizeof(Bezier), m_objects.beziers);
+ break;
+ }
+ }
Debug("Successfully loaded %u objects from \"%s\"", ObjectCount(), filename.c_str());
+#ifndef QUADTREE_DISABLED
+ if (m_quadtree.root_id == QUADTREE_EMPTY)
+ {
+ GenBaseQuadtree();
+ }
+#endif
}
-void Document::Add(Real x, Real y, Real w, Real h)
+void Document::Add(ObjectType type, const Rect & bounds, unsigned data_index)
{
- m_objects.bounds.push_back(Rect(x, y, w, h));
- m_count++;
+ m_objects.types.push_back(type);
+ m_objects.bounds.push_back(bounds);
+ m_objects.data_indices.push_back(data_index);
+ ++m_count; // Why can't we just use the size of types or something?
}
+unsigned Document::AddBezierData(const Bezier & bezier)
+{
+ m_objects.beziers.push_back(bezier);
+ return m_objects.beziers.size()-1;
+}
+
+
void Document::DebugDumpObjects()
{
Debug("Objects for Document %p are:", this);
for (unsigned id = 0; id < ObjectCount(); ++id)
{
- Debug("%u.\t%s", id, m_objects.bounds[id].Str().c_str());
+ Debug("%u. \tType: %u\tBounds: %s", id, m_objects.types[id], m_objects.bounds[id].Str().c_str());
}
}
bool Document::operator==(const Document & equ) const
{
- return (ObjectCount() == equ.ObjectCount() && memcmp(m_objects.bounds.data(), equ.m_objects.bounds.data(), ObjectCount() * sizeof(Rect)) == 0);
+ return (ObjectCount() == equ.ObjectCount()
+ && memcmp(m_objects.bounds.data(), equ.m_objects.bounds.data(), ObjectCount() * sizeof(Rect)) == 0
+ && memcmp(m_objects.data_indices.data(), equ.m_objects.data_indices.data(), ObjectCount() * sizeof(unsigned)) == 0
+ && memcmp(m_objects.beziers.data(), equ.m_objects.beziers.data(), m_objects.beziers.size() * sizeof(Bezier)) == 0);
+}
+
+
+#include "../contrib/pugixml-1.4/src/pugixml.hpp"
+#include "../contrib/pugixml-1.4/src/pugixml.cpp"
+
+void Document::LoadSVG(const string & filename, const Rect & bounds)
+{
+ using namespace pugi;
+
+ xml_document doc_xml;
+ ifstream input(filename.c_str(), ios_base::in);
+ xml_parse_result result = doc_xml.load(input);
+
+ if (!result)
+ Fatal("Couldn't load \"%s\" - %s", filename.c_str(), result.description());
+
+ Debug("Loaded XML - %s", result.description());
+
+ input.close();
+
+ // Combine all SVG tags into one thing because lazy
+ for (xml_node svg : doc_xml.children("svg"))
+ {
+ Real width = svg.attribute("width").as_float() * bounds.w;
+ Real height = svg.attribute("width").as_float() * bounds.h;
+
+
+ // Rectangles
+ Real coords[4];
+ const char * attrib_names[] = {"x", "y", "width", "height"};
+ for (pugi::xml_node rect : svg.children("rect"))
+ {
+ for (size_t i = 0; i < 4; ++i)
+ coords[i] = rect.attribute(attrib_names[i]).as_float();
+
+ bool outline = !(rect.attribute("fill"));
+ Add(outline?RECT_OUTLINE:RECT_FILLED, Rect(coords[0]/width + bounds.x, coords[1]/height + bounds.y, coords[2]/width, coords[3]/height),0);
+ Debug("Added rectangle");
+ }
+
+ // Circles
+ for (pugi::xml_node circle : svg.children("circle"))
+ {
+ Real cx = circle.attribute("cx").as_float();
+ Real cy = circle.attribute("cy").as_float();
+ Real r = circle.attribute("r").as_float();
+
+ Real x = (cx - r)/width + bounds.x;
+ Real y = (cy - r)/height + bounds.y;
+ Real w = 2*r/width;
+ Real h = 2*r/height;
+
+ Rect rect(x,y,w,h);
+ Add(CIRCLE_FILLED, rect,0);
+ Debug("Added Circle %s", rect.Str().c_str());
+
+ }
+
+ // paths
+ for (pugi::xml_node path : svg.children("path"))
+ {
+
+ string d = path.attribute("d").as_string();
+ Debug("Path data attribute is \"%s\"", d.c_str());
+ AddPathFromString(d, Rect(bounds.x,bounds.y,width,height));
+
+ }
+ }
+
+ //Fatal("Done");
+
+
+
+}
+
+// Behold my amazing tokenizing abilities
+static string & GetToken(const string & d, string & token, unsigned & i)
+{
+ token.clear();
+ while (i < d.size() && iswspace(d[i]))
+ {
+ ++i;
+ }
+
+ while (i < d.size())
+ {
+ if (d[i] == ',' || isalpha(d[i]) || iswspace(d[i]))
+ {
+ if (token.size() == 0 && !iswspace(d[i]))
+ {
+ token += d[i++];
+ }
+ break;
+ }
+ token += d[i++];
+ }
+ Debug("Got token \"%s\"", token.c_str());
+ return token;
+}
+
+
+// Fear the wrath of the tokenizing svg data
+// Seriously this isn't really very DOM-like at all is it?
+void Document::AddPathFromString(const string & d, const Rect & bounds)
+{
+ Real x[3] = {0,0,0};
+ Real y[3] = {0,0,0};
+
+ string token("");
+ string command("m");
+
+ unsigned i = 0;
+ unsigned prev_i = 0;
+ Real x0;
+ Real y0;
+ bool started = false;
+ while (i < d.size() && GetToken(d, token, i).size() > 0)
+ {
+ if (isalpha(token[0]))
+ command = token;
+ else
+ {
+ i = prev_i; // hax
+ if(command == "")
+ command = "l";
+ }
+
+ if (command == "m")
+ {
+ Debug("Construct moveto command");
+ x[0] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
+ assert(GetToken(d,token,i) == ",");
+ y[0] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+ if (!started)
+ {
+ x0 = x[0];
+ y0 = y[0];
+ started = true;
+ }
+ Debug("mmoveto %f,%f", Float(x[0]),Float(y[0]));
+ command = "l";
+ }
+ else if (command == "c")
+ {
+ Debug("Construct curveto command");
+ x[0] = strtod(GetToken(d,token,i).c_str(),NULL)/bounds.w;
+ assert(GetToken(d,token,i) == ",");
+ y[0] = strtod(GetToken(d,token,i).c_str(),NULL)/bounds.h;
+
+ x[1] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
+ assert(GetToken(d,token,i) == ",");
+ y[1] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+
+ x[2] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
+ assert(GetToken(d,token,i) == ",");
+ y[2] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+
+ unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2]));
+ Add(BEZIER,bounds,index);
+
+
+ Debug("[%u] curveto %f,%f %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]),Float(x[2]),Float(y[2]));
+
+ x[0] = x[2];
+ y[0] = y[2];
+
+
+ }
+ else if (command == "l")
+ {
+ Debug("Construct lineto command");
+
+ x[1] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
+ assert(GetToken(d,token,i) == ",");
+ y[1] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+
+ x[2] = x[1];
+ y[2] = y[1];
+
+ Rect segment_bounds(x[0], y[0], x[2] - x[0], y[2] - y[0]);
+
+ unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2]));
+ Add(BEZIER,bounds,index);
+
+ Debug("[%u] lineto %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]));
+
+ x[0] = x[2];
+ y[0] = y[2];
+
+ }
+ else if (command == "z")
+ {
+ Debug("Construct returnto command");
+ x[1] = x0;
+ y[1] = y0;
+ x[2] = x0;
+ y[2] = y0;
+
+ unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2]));
+ Add(BEZIER,bounds,index);
+
+ Debug("[%u] returnto %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]));
+
+ x[0] = x[2];
+ y[0] = y[2];
+ command = "m";
+ }
+ else
+ {
+ Warn("Unrecognised command \"%s\", set to \"m\"", command.c_str());
+ command = "m";
+ }
+ prev_i = i;
+ }
}
git.ucc.asn.au / ipdf / code.git / blobdiff
UCC git Repository :: git.ucc.asn.au