#include <cstdio>
#include <fstream>
+#include "../contrib/pugixml-1.4/src/pugixml.cpp"
+
+#include "stb_truetype.h"
+
using namespace IPDF;
using namespace std;
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;
GenQuadChild(0, QTC_TOP_LEFT);
- GenQuadParent(0, QTC_BOTTOM_RIGHT);
}
+int Document::ClipObjectToQuadChild(int object_id, QuadTreeNodeChildren type)
+{
+ switch (m_objects.types[object_id])
+ {
+ case RECT_FILLED:
+ case RECT_OUTLINE:
+ {
+ Rect obj_bounds = TransformToQuadChild(m_objects.bounds[object_id], type);
+ if (obj_bounds.x < 0)
+ {
+ obj_bounds.w += obj_bounds.x;
+ obj_bounds.x = 0;
+ }
+ if (obj_bounds.y < 0)
+ {
+ obj_bounds.h += obj_bounds.y;
+ obj_bounds.y = 0;
+ }
+ if (obj_bounds.x + obj_bounds.w > 1)
+ {
+ obj_bounds.w += (1 - (obj_bounds.x + obj_bounds.w));
+ }
+ if (obj_bounds.y + obj_bounds.h > 1)
+ {
+ obj_bounds.h += (1 - (obj_bounds.y + obj_bounds.h));
+ }
+ m_objects.bounds.push_back(obj_bounds);
+ m_objects.types.push_back(m_objects.types[object_id]);
+ m_objects.data_indices.push_back(m_objects.data_indices[object_id]);
+ return 1;
+ }
+ case BEZIER:
+ {
+// Rect child_node_bounds = m_objects.bounds[object_id];
+ Rect clip_bezier_bounds = TransformRectCoordinates(m_objects.bounds[object_id], TransformFromQuadChild(Rect{0,0,1,1}, type));
+ std::vector<Bezier> new_curves = m_objects.beziers[m_objects.data_indices[object_id]].ClipToRectangle(clip_bezier_bounds);
+ for (size_t i = 0; i < new_curves.size(); ++i)
+ {
+ Rect new_bounds = TransformToQuadChild(m_objects.bounds[object_id], type);
+ Bezier new_curve_data = new_curves[i].ToAbsolute(TransformToQuadChild(m_objects.bounds[object_id],type));
+ new_bounds = new_curve_data.SolveBounds();
+ new_curve_data = new_curve_data.ToRelative(new_bounds);
+ unsigned index = AddBezierData(new_curve_data);
+ m_objects.bounds.push_back(new_bounds);
+ m_objects.types.push_back(BEZIER);
+ m_objects.data_indices.push_back(index);
+ }
+ return new_curves.size();
+ }
+ default:
+ Debug("Adding %s -> %s", m_objects.bounds[object_id].Str().c_str(), TransformToQuadChild(m_objects.bounds[object_id], type).Str().c_str());
+ m_objects.bounds.push_back(TransformToQuadChild(m_objects.bounds[object_id], type));
+ m_objects.types.push_back(m_objects.types[object_id]);
+ m_objects.data_indices.push_back(m_objects.data_indices[object_id]);
+ return 1;
+ }
+ return 0;
+}
QuadTreeIndex Document::GenQuadChild(QuadTreeIndex parent, QuadTreeNodeChildren type)
{
QuadTreeIndex new_index = m_quadtree.nodes.size();
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))
+ if (IntersectsQuadChild(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_count += ClipObjectToQuadChild(i, type);
}
}
m_quadtree.nodes[new_index].object_end = m_objects.bounds.size();
Debug("Bezier data...");
LoadStructVector<Bezier>(file, chunk_size/sizeof(Bezier), m_objects.beziers);
break;
+
+ case CT_OBJPATHS:
+ Debug("Path data...");
+ Warn("Not handled because lazy");
+ break;
}
}
Debug("Successfully loaded %u objects from \"%s\"", ObjectCount(), filename.c_str());
#endif
}
-void Document::Add(ObjectType type, const Rect & bounds, unsigned data_index)
+unsigned Document::AddPath(unsigned start_index, unsigned end_index, const Colour & fill)
+{
+ Path path(m_objects, start_index, end_index, fill);
+ unsigned data_index = AddPathData(path);
+ Rect bounds = path.SolveBounds(m_objects);
+ unsigned result = Add(PATH, bounds,data_index);
+ return result;
+}
+
+/**
+ * Add a Bezier using Absolute coords
+ */
+unsigned Document::AddBezier(const Bezier & bezier)
+{
+ Rect bounds = bezier.SolveBounds();
+ Bezier data = bezier.ToRelative(bounds); // Relative
+ if (data.ToAbsolute(bounds) != bezier)
+ {
+ Error("%s != %s", data.ToAbsolute(Rect(0,0,1,1)).Str().c_str(),
+ bezier.Str().c_str());
+ Fatal("ToAbsolute on ToRelative does not give original Bezier");
+ }
+ unsigned index = AddBezierData(data);
+ return Add(BEZIER, bounds, index);
+}
+
+unsigned Document::Add(ObjectType type, const Rect & bounds, unsigned data_index)
{
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?
+ return (m_count++); // Why can't we just use the size of types or something?
}
unsigned Document::AddBezierData(const Bezier & bezier)
return m_objects.beziers.size()-1;
}
+unsigned Document::AddPathData(const Path & path)
+{
+ m_objects.paths.push_back(path);
+ return m_objects.paths.size()-1;
+}
void Document::DebugDumpObjects()
{
}
-#include "../contrib/pugixml-1.4/src/pugixml.hpp"
-#include "../contrib/pugixml-1.4/src/pugixml.cpp"
-/**
- * Load an SVG into a rectangle
- */
-void Document::LoadSVG(const string & filename, const Rect & bounds)
+// Behold my amazing tokenizing abilities
+static string & GetToken(const string & d, string & token, unsigned & i, const string & delims = "()[],{}<>;:=")
{
- using namespace pugi;
+ token.clear();
+ while (i < d.size() && iswspace(d[i]))
+ {
+ ++i;
+ }
- xml_document doc_xml;
- ifstream input(filename.c_str(), ios_base::in);
- xml_parse_result result = doc_xml.load(input);
+ while (i < d.size())
+ {
+ if (iswspace(d[i]) || strchr(delims.c_str(),d[i]) != NULL)
+ {
+ if (token.size() == 0 && !iswspace(d[i]))
+ {
+ token += d[i++];
+ }
+ break;
+ }
+ token += d[i++];
+ }
+ //Debug("Got token \"%s\"", token.c_str());
+ return token;
+}
+
+static void GetXYPair(const string & d, Real & x, Real & y, unsigned & i,const string & delims = "()[],{}<>;:=")
+{
+ string token("");
+ while (GetToken(d, token, i, delims) == ",");
+ x = strtod(token.c_str(),NULL);
+ if (GetToken(d, token, i, delims) != ",")
+ {
+ Fatal("Expected \",\" seperating x,y pair");
+ }
+ y = strtod(GetToken(d, token, i, delims).c_str(),NULL);
+}
+
+static bool GetKeyValuePair(const string & d, string & key, string & value, unsigned & i, const string & delims = "()[],{}<>;:=")
+{
+ key = "";
+ string token;
+ while (GetToken(d, token, i, delims) == ":" || token == ";");
+ key = token;
+ if (GetToken(d, token, i, delims) != ":")
+ {
+ Error("Expected \":\" seperating key:value pair");
+ return false;
+ }
+ value = "";
+ GetToken(d, value, i, delims);
+ return true;
+}
+
+static void TransformXYPair(Real & x, Real & y, const SVGMatrix & transform)
+{
+ Real x0(x);
+ x = transform.a * x + transform.c * y + transform.e;
+ y = transform.b * x0 + transform.d * y + transform.f;
+}
+
+void Document::ParseSVGTransform(const string & s, SVGMatrix & transform)
+{
+ //Debug("Parsing transform %s", s.c_str());
+ string token;
+ string command;
+ unsigned i = 0;
- if (!result)
- Fatal("Couldn't load \"%s\" - %s", filename.c_str(), result.description());
-
- Debug("Loaded XML - %s", result.description());
+ while (i < s.size())
+ {
+ GetToken(s, command, i);
+ if (command == "," || command == "" || command == ":")
+ {
+ if (i < s.size())
+ GetToken(s, command, i);
+ else
+ return;
+ }
+ //Debug("Token is \"%s\"", command.c_str());
- input.close();
+ SVGMatrix delta = {1,0,0,0,1,0};
+
+
+ assert(GetToken(s,token, i) == "(");
+ if (command == "translate")
+ {
+ GetXYPair(s, delta.e, delta.f, i);
+ assert(GetToken(s,token, i) == ")");
+ }
+ else if (command == "matrix")
+ {
+ GetXYPair(s, delta.a, delta.b,i);
+ GetXYPair(s, delta.c, delta.d,i);
+ GetXYPair(s, delta.e, delta.f,i);
+ assert(GetToken(s,token, i) == ")");
+ }
+ else if (command == "scale")
+ {
+ delta.a = (strtod(GetToken(s,token,i).c_str(), NULL));
+ GetToken(s, token, i);
+ if (token == ",")
+ {
+ delta.d = (strtod(GetToken(s,token,i).c_str(), NULL));
+ assert(GetToken(s, token, i) == ")");
+ }
+ else
+ {
+ delta.d = delta.a;
+ assert(token == ")");
+ }
+
+ }
+ else
+ {
+ Warn("Unrecognised transform \"%s\", using identity", command.c_str());
+ }
+
+ //Debug("Old transform is {%f,%f,%f,%f,%f,%f}", transform.a, transform.b, transform.c, transform.d,transform.e,transform.f);
+ //Debug("Delta transform is {%f,%f,%f,%f,%f,%f}", delta.a, delta.b, delta.c, delta.d,delta.e,delta.f);
+
+ SVGMatrix old(transform);
+ transform.a = old.a * delta.a + old.c * delta.b;
+ transform.c = old.a * delta.c + old.c * delta.d;
+ transform.e = old.a * delta.e + old.c * delta.f + old.e;
+
+ transform.b = old.b * delta.a + old.d * delta.b;
+ transform.d = old.b * delta.c + old.d * delta.d;
+ transform.f = old.b * delta.e + old.d * delta.f + old.f;
+
+ //Debug("New transform is {%f,%f,%f,%f,%f,%f}", transform.a, transform.b, transform.c, transform.d,transform.e,transform.f);
+ }
+}
+
+void Document::ParseSVGNode(pugi::xml_node & root, SVGMatrix & parent_transform)
+{
+ //Debug("Parse node <%s>", root.name());
- // Combine all SVG tags into one thing because lazy
- for (xml_node svg : doc_xml.children("svg"))
+
+ for (pugi::xml_node child = root.first_child(); child; child = child.next_sibling())
{
- Real width = svg.attribute("width").as_float() * bounds.w;
- Real height = svg.attribute("width").as_float() * bounds.h;
+ SVGMatrix transform(parent_transform);
+ pugi::xml_attribute attrib_trans = child.attribute("transform");
+ if (!attrib_trans.empty())
+ {
+ ParseSVGTransform(attrib_trans.as_string(), transform);
+ }
- // Rectangles
- Real coords[4];
- const char * attrib_names[] = {"x", "y", "width", "height"};
- for (pugi::xml_node rect : svg.children("rect"))
+
+ if (strcmp(child.name(), "svg") == 0 || strcmp(child.name(),"g") == 0
+ || strcmp(child.name(), "group") == 0)
+ {
+
+ ParseSVGNode(child, transform);
+ continue;
+ }
+ else if (strcmp(child.name(), "path") == 0)
+ {
+ string d = child.attribute("d").as_string();
+ //Debug("Path data attribute is \"%s\"", d.c_str());
+ bool closed = false;
+ pair<unsigned, unsigned> range = ParseSVGPathData(d, transform, closed);
+ if (closed)
+ {
+ Colour c(0,0,0,0);
+ string colour_str("");
+ map<string, string> style;
+ if (child.attribute("style"))
+ {
+ ParseSVGStyleData(child.attribute("style").as_string(), style);
+ }
+
+ // Determine shading colour
+ if (child.attribute("fill"))
+ {
+ colour_str = child.attribute("fill").as_string();
+ }
+ else if (style.find("fill") != style.end())
+ {
+ colour_str = style["fill"];
+ }
+ if (colour_str == "red")
+ c = {1,0,0,1};
+ else if (colour_str == "blue")
+ c = {0,0,1,1};
+ else if (colour_str == "green")
+ c = {0,1,0,1};
+ else if (colour_str == "black")
+ c = {0,0,0,1};
+ else if (colour_str == "white")
+ c = {1,1,1,1};
+ else if (colour_str.size() == 7 && colour_str[0] == '#')
+ {
+ Debug("Parse colour string: \"%s\"", colour_str.c_str());
+ char comp[2] = {colour_str[1], colour_str[2]};
+ c.r = Real(strtoul(comp, NULL, 16))/Real(255);
+ comp[0] = colour_str[3]; comp[1] = colour_str[4];
+ c.g = Real(strtoul(comp, NULL, 16))/Real(255);
+ comp[0] = colour_str[5]; comp[1] = colour_str[6];
+ c.b = Real(strtoul(comp, NULL, 16))/Real(255);
+ c.a = 1;
+ Debug("Colour is: %f, %f, %f, %f", Float(c.r), Float(c.g), Float(c.b), Float(c.a));
+ }
+
+ // Determin shading alpha
+ if (child.attribute("fill-opacity"))
+ {
+ c.a = child.attribute("fill-opacity").as_float();
+ }
+ else if (style.find("fill-opacity") != style.end())
+ {
+ c.a = strtod(style["fill-opacity"].c_str(), NULL);
+ }
+
+ Debug("fill-opacity is %f", Float(c.a));
+ AddPath(range.first, range.second, c);
+ }
+
+ }
+ else if (strcmp(child.name(), "line") == 0)
{
+ Real x0(child.attribute("x1").as_float());
+ Real y0(child.attribute("y1").as_float());
+ Real x1(child.attribute("x2").as_float());
+ Real y1(child.attribute("y2").as_float());
+ TransformXYPair(x0,y0,transform);
+ TransformXYPair(x1,y1,transform);
+ AddBezier(Bezier(x0,y0,x1,y1,x1,y1,x1,y1));
+ }
+ else if (strcmp(child.name(), "rect") == 0)
+ {
+ Real coords[4];
+ const char * attrib_names[] = {"x", "y", "width", "height"};
for (size_t i = 0; i < 4; ++i)
- coords[i] = rect.attribute(attrib_names[i]).as_float();
+ coords[i] = child.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 x2(coords[0]+coords[2]);
+ Real y2(coords[1]+coords[3]);
+ TransformXYPair(coords[0],coords[1],transform); // x, y, transform
+ TransformXYPair(x2,y2,transform);
+ coords[2] = x2 - coords[0];
+ coords[3] = y2 - coords[1];
+
+ bool outline = !(child.attribute("fill") && strcmp(child.attribute("fill").as_string(),"none") != 0);
+ Add(outline?RECT_OUTLINE:RECT_FILLED, Rect(coords[0], coords[1], coords[2], coords[3]),0);
+ }
+ else if (strcmp(child.name(), "circle") == 0)
{
- Real cx = circle.attribute("cx").as_float();
- Real cy = circle.attribute("cy").as_float();
- Real r = circle.attribute("r").as_float();
+ Real cx = child.attribute("cx").as_float();
+ Real cy = child.attribute("cy").as_float();
+ Real r = child.attribute("r").as_float();
+
+ Real x = (cx - r);
+ Real y = (cy - r);
+ TransformXYPair(x,y,transform);
+ Real w = Real(2)*r*transform.a; // width scales
+ Real h = Real(2)*r*transform.d; // height scales
- 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"))
+ Debug("Added Circle %s", rect.Str().c_str());
+ }
+ else if (strcmp(child.name(), "text") == 0)
{
-
- 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));
-
+ Real x = child.attribute("x").as_float();
+ Real y = child.attribute("y").as_float();
+ TransformXYPair(x,y,transform);
+ Debug("Add text \"%s\"", child.child_value());
+ AddText(child.child_value(), 0.05, x, y);
}
}
-
- //Fatal("Done");
-
-
-
}
-// Behold my amazing tokenizing abilities
-static string & GetToken(const string & d, string & token, unsigned & i)
+void Document::ParseSVGStyleData(const string & style, map<string, string> & results)
{
- token.clear();
- while (i < d.size() && iswspace(d[i]))
+ unsigned i = 0;
+ string key;
+ string value;
+ while (i < style.size() && GetKeyValuePair(style, key, value, i))
{
- ++i;
+ results[key] = value;
}
+}
+
+/**
+ * Parse an SVG string into a rectangle
+ */
+void Document::ParseSVG(const string & input, const Rect & bounds)
+{
+ using namespace pugi;
- while (i < d.size())
- {
- if (d[i] == ',' || (isalpha(d[i]) && d[i] != 'e') || 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;
+ xml_document doc_xml;
+ xml_parse_result result = doc_xml.load(input.c_str());
+
+ if (!result)
+ Error("Couldn't parse SVG input - %s", result.description());
+
+ Debug("Loaded XML - %s", result.description());
+ SVGMatrix transform = {bounds.w, 0,bounds.x, 0,bounds.h,bounds.y};
+ ParseSVGNode(doc_xml, transform);
+}
+
+/**
+ * Load an SVG into a rectangle
+ */
+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)
+ Error("Couldn't load \"%s\" - %s", filename.c_str(), result.description());
+
+ Debug("Loaded XML - %s", result.description());
+
+ input.close();
+ // a c e, b d f
+ SVGMatrix transform = {bounds.w, 0,bounds.x, 0,bounds.h,bounds.y};
+ ParseSVGNode(doc_xml, transform);
}
+
// 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)
+pair<unsigned, unsigned> Document::ParseSVGPathData(const string & d, const SVGMatrix & transform, bool & closed)
{
+ closed = false;
Real x[4] = {0,0,0,0};
Real y[4] = {0,0,0,0};
bool start = false;
- while (i < d.size() && GetToken(d, token, i).size() > 0)
+
+ static string delims("()[],{}<>;:=LlHhVvmMqQzZcC");
+
+ pair<unsigned, unsigned> range(m_count, m_count);
+
+ while (i < d.size() && GetToken(d, token, i, delims).size() > 0)
{
if (isalpha(token[0]))
command = token;
if (command == "m" || command == "M")
{
- Debug("Construct moveto command");
- Real dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
- assert(GetToken(d,token,i) == ",");
- Real dy = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+ //Debug("Construct moveto command");
+ Real dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+ assert(GetToken(d,token,i,delims) == ",");
+ Real dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
x[0] = (relative) ? x[0] + dx : dx;
y[0] = (relative) ? y[0] + dy : dy;
-
-
- Debug("mmoveto %f,%f", Float(x[0]),Float(y[0]));
+ x0 = x[0];
+ y0 = y[0];
+ //Debug("mmoveto %f,%f", Float(x[0]),Float(y[0]));
command = (command == "m") ? "l" : "L";
}
else if (command == "c" || command == "C" || command == "q" || command == "Q")
{
- Debug("Construct curveto command");
- Real dx = strtod(GetToken(d,token,i).c_str(),NULL)/bounds.w;
- assert(GetToken(d,token,i) == ",");
- Real dy = strtod(GetToken(d,token,i).c_str(),NULL)/bounds.h;
+ //Debug("Construct curveto command");
+ Real dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+ assert(GetToken(d,token,i,delims) == ",");
+ Real dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
x[1] = (relative) ? x[0] + dx : dx;
y[1] = (relative) ? y[0] + dy : dy;
- dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
- assert(GetToken(d,token,i) == ",");
- dy = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+ dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+ assert(GetToken(d,token,i,delims) == ",");
+ dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
x[2] = (relative) ? x[0] + dx : dx;
y[2] = (relative) ? y[0] + dy : dy;
if (command != "q" && command != "Q")
{
- dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
- assert(GetToken(d,token,i) == ",");
- dy = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+ dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+ assert(GetToken(d,token,i,delims) == ",");
+ dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
x[3] = (relative) ? x[0] + dx : dx;
y[3] = (relative) ? y[0] + dy : dy;
}
{
x[3] = x[2];
y[3] = y[2];
+ Real old_x1(x[1]), old_y1(y[1]);
+ x[1] = x[0] + Real(2) * (old_x1 - x[0])/ Real(3);
+ y[1] = y[0] + Real(2) * (old_y1 - y[0])/ Real(3);
+ x[2] = x[3] + Real(2) * (old_x1 - x[3])/ Real(3);
+ y[2] = y[3] + Real(2) * (old_y1 - y[3])/ Real(3);
}
- unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
- Add(BEZIER,Rect(0,0,1,1),index);
-
+ Real x3(x[3]);
+ Real y3(y[3]);
+ for (int j = 0; j < 4; ++j)
+ TransformXYPair(x[j],y[j], transform);
+
+ range.second = AddBezier(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
- 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]));
+ //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]));
- x[0] = x[3];
- y[0] = y[3];
+ x[0] = x3;
+ y[0] = y3;
}
- else if (command == "l" || command == "L")
+ else if (command == "l" || command == "L" || command == "h" || command == "H" || command == "v" || command == "V")
{
- Debug("Construct lineto command");
+ //Debug("Construct lineto command, relative %d", relative);
- Real dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
- assert(GetToken(d,token,i) == ",");
- Real dy = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+ Real dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+ Real dy;
+ if (command == "l" || command == "L")
+ {
+ assert(GetToken(d,token,i,delims) == ",");
+ dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+ }
+ else if (command == "v" || command == "V")
+ {
+ swap(dx,dy);
+ }
- x[1] = (relative) ? x0 + dx : dx;
- y[1] = (relative) ? y0 + dy : dy;
+ x[1] = (relative) ? x[0] + dx : dx;
+ y[1] = (relative) ? y[0] + dy : dy;
+ if (command == "v" || command == "V")
+ {
+ x[1] = x[0];
+ }
+ else if (command == "h" || command == "H")
+ {
+ y[1] = y[0];
+ }
- x[2] = x[1];
- y[2] = y[1];
+ Real x1(x[1]);
+ Real y1(y[1]);
- x[3] = x[1];
- y[3] = y[1];
+ TransformXYPair(x[0],y[0],transform);
+ TransformXYPair(x[1],y[1],transform);
+
- unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
- Add(BEZIER,Rect(0,0,1,1),index);
+ range.second = AddBezier(Bezier(x[0],y[0],x[1],y[1],x[1],y[1],x[1],y[1]));
- Debug("[%u] lineto %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]));
+ //Debug("[%u] lineto %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]));
- x[0] = x[3];
- y[0] = y[3];
+ x[0] = x1;
+ y[0] = y1;
}
else if (command == "z" || command == "Z")
{
- Debug("Construct returnto command");
+ //Debug("Construct returnto command");
x[1] = x0;
y[1] = y0;
x[2] = x0;
x[3] = x0;
y[3] = y0;
- unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
- Add(BEZIER,Rect(0,0,1,1),index);
-
- Debug("[%u] returnto %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]));
+ Real x3(x[3]);
+ Real y3(y[3]);
+ for (int j = 0; j < 4; ++j)
+ TransformXYPair(x[j],y[j], transform);
+
+ range.second = AddBezier(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
+ //Debug("[%u] returnto %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]));
- x[0] = x[3];
- y[0] = y[3];
+ x[0] = x3;
+ y[0] = y3;
command = "m";
+ closed = true;
}
else
{
}
prev_i = i;
}
+ return range;
+}
+
+void Document::SetFont(const string & font_filename)
+{
+ if (m_font_data != NULL)
+ {
+ free(m_font_data);
+ }
+
+ FILE *font_file = fopen(font_filename.c_str(), "rb");
+ fseek(font_file, 0, SEEK_END);
+ size_t font_file_size = ftell(font_file);
+ fseek(font_file, 0, SEEK_SET);
+ m_font_data = (unsigned char*)malloc(font_file_size);
+ size_t read = fread(m_font_data, 1, font_file_size, font_file);
+ if (read != font_file_size)
+ {
+ Fatal("Failed to read font data from \"%s\" - Read %u bytes expected %u - %s", font_filename.c_str(), read, font_file_size, strerror(errno));
+ }
+ fclose(font_file);
+ stbtt_InitFont(&m_font, m_font_data, 0);
+}
+
+void Document::AddText(const string & text, Real scale, Real x, Real y)
+{
+ if (m_font_data == NULL)
+ {
+ Warn("No font loaded");
+ return;
+ }
+
+ Real x0(x);
+ //Real y0(y);
+ int ascent = 0, descent = 0, line_gap = 0;
+ stbtt_GetFontVMetrics(&m_font, &ascent, &descent, &line_gap);
+ float font_scale = scale / (float)(ascent - descent);
+ Real y_advance = Real(font_scale) * Real(ascent - descent + line_gap);
+ for (unsigned i = 0; i < text.size(); ++i)
+ {
+ if (text[i] == '\n')
+ {
+ y += y_advance;
+ x = x0;
+ }
+ if (!isprint(text[i]))
+ continue;
+
+ int advance_width = 0, left_side_bearing = 0, kerning = 0;
+ stbtt_GetCodepointHMetrics(&m_font, text[i], &advance_width, &left_side_bearing);
+ if (i >= 1)
+ {
+ kerning = stbtt_GetCodepointKernAdvance(&m_font, text[i-1], text[i]);
+ }
+ x += Real(font_scale) * Real(kerning);
+ AddFontGlyphAtPoint(&m_font, text[i], font_scale, x, y);
+ x += Real(font_scale) * Real(advance_width);
+ }
+}
+
+void Document::AddFontGlyphAtPoint(stbtt_fontinfo *font, int character, Real scale, Real x, Real y)
+{
+ int glyph_index = stbtt_FindGlyphIndex(font, character);
+
+ // Check if there is actully a glyph to render.
+ if (stbtt_IsGlyphEmpty(font, glyph_index))
+ {
+ return;
+ }
+
+ stbtt_vertex *instructions;
+ int num_instructions = stbtt_GetGlyphShape(font, glyph_index, &instructions);
+
+ Real current_x(0), current_y(0);
+ unsigned start_index = m_count;
+ unsigned end_index = m_count;
+ for (int i = 0; i < num_instructions; ++i)
+ {
+ // TTF uses 16-bit signed ints for coordinates:
+ // with the y-axis inverted compared to us.
+ // Convert and scale any data.
+ Real inst_x = Real(instructions[i].x)*scale;
+ Real inst_y = Real(instructions[i].y)*-scale;
+ Real inst_cx = Real(instructions[i].cx)*scale;
+ Real inst_cy = Real(instructions[i].cy)*-scale;
+ Real old_x(current_x), old_y(current_y);
+ current_x = inst_x;
+ current_y = inst_y;
+
+ switch(instructions[i].type)
+ {
+ // Move To
+ case STBTT_vmove:
+ break;
+ // Line To
+ case STBTT_vline:
+ 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));
+ break;
+ // Quadratic Bezier To:
+ case STBTT_vcurve:
+ // Quadratic -> Cubic:
+ // - Endpoints are the same.
+ // - cubic1 = quad0+(2/3)*(quad1-quad0)
+ // - cubic2 = quad2+(2/3)*(quad1-quad2)
+ 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,
+ 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));
+ break;
+ }
+ }
+
+ if (start_index < m_count && end_index < m_count)
+ {
+ AddPath(start_index, end_index);
+ }
+ Debug("Added Glyph \"%c\" at %f %f, scale %f", (char)character, Float(x), Float(y), Float(scale));
+
+ stbtt_FreeShape(font, instructions);
}
git.ucc.asn.au / ipdf / code.git / blobdiff
UCC git Repository :: git.ucc.asn.au