#include <cstdio>
#include <fstream>
+#include "../contrib/pugixml-1.4/src/pugixml.cpp"
+
+#include "stb_truetype.h"
+
using namespace IPDF;
using namespace std;
}
-#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"))
+void Document::ParseSVGNode(pugi::xml_node & root, const Rect & bounds, Real & width, Real & height)
+{
+ Debug("Parse node <%s>", root.name());
+ pugi::xml_attribute attrib_w = root.attribute("width");
+ pugi::xml_attribute attrib_h = root.attribute("height");
+ if (!attrib_w.empty())
+ width = attrib_w.as_float() * bounds.w;
+ if (!attrib_h.empty())
+ height = attrib_h.as_float() * bounds.h;
+
+ 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;
-
+
- // 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)
{
+ //TODO: Handle translates etc here
+ ParseSVGNode(child, bounds, width, height);
+ continue;
+ }
+ else if (strcmp(child.name(), "path") == 0)
+ {
+ string d = child.attribute("d").as_string();
+ Debug("Path data attribute is \"%s\"", d.c_str());
+ ParseSVGPathData(d, Rect(bounds.x,bounds.y,width,height));
+ }
+ 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"));
+ bool outline = !(child.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"))
+ }
+ 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)/width + bounds.x;
Real y = (cy - r)/height + bounds.y;
- Real w = 2*r/width;
- Real h = 2*r/height;
+ Real w = Real(2)*r/width;
+ Real h = Real(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));
-
+ Debug("Added Circle %s", rect.Str().c_str());
}
}
+}
+
+/**
+ * Load an SVG into a rectangle
+ */
+void Document::LoadSVG(const string & filename, const Rect & bounds)
+{
+ using namespace pugi;
- //Fatal("Done");
+ 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();
+ Real width(1);
+ Real height(1);
+ ParseSVGNode(doc_xml, bounds,width,height);
}
// Behold my amazing tokenizing abilities
while (i < d.size())
{
- if (d[i] == ',' || isalpha(d[i]) || iswspace(d[i]))
+ if (d[i] == ',' || (isalpha(d[i]) && d[i] != 'e') || iswspace(d[i]))
{
if (token.size() == 0 && !iswspace(d[i]))
{
}
token += d[i++];
}
- Debug("Got token \"%s\"", token.c_str());
+ //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)
+void Document::ParseSVGPathData(const string & d, const Rect & bounds)
{
- Real x[3] = {0,0,0};
- Real y[3] = {0,0,0};
+ Real x[4] = {0,0,0,0};
+ Real y[4] = {0,0,0,0};
string token("");
string command("m");
+ Real x0(0);
+ Real y0(0);
+
unsigned i = 0;
unsigned prev_i = 0;
- Real x0;
- Real y0;
- bool started = false;
+
+ bool start = false;
+
while (i < d.size() && GetToken(d, token, i).size() > 0)
{
if (isalpha(token[0]))
{
i = prev_i; // hax
if(command == "")
- command = "l";
+ command = "L";
}
+
+ bool relative = islower(command[0]);
- if (command == "m")
+ if (command == "m" || command == "M")
{
Debug("Construct moveto command");
- x[0] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
+ Real dx = Real(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;
- }
+ Real dy = Real(strtod(GetToken(d,token,i).c_str(),NULL)) / bounds.h;
+
+ x[0] = (relative) ? x[0] + dx : dx;
+ y[0] = (relative) ? y[0] + dy : dy;
+
+
+
Debug("mmoveto %f,%f", Float(x[0]),Float(y[0]));
- command = "l";
+ command = (command == "m") ? "l" : "L";
}
- else if (command == "c")
+ else if (command == "c" || command == "C" || command == "q" || command == "Q")
{
Debug("Construct curveto command");
- x[0] = strtod(GetToken(d,token,i).c_str(),NULL)/bounds.w;
+ Real dx = Real(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;
+ Real dy = Real(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[1] = (relative) ? x[0] + dx : dx;
+ y[1] = (relative) ? y[0] + dy : dy;
- x[2] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
+ dx = Real(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;
+ dy = Real(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);
+ x[2] = (relative) ? x[0] + dx : dx;
+ y[2] = (relative) ? y[0] + dy : dy;
+
+ if (command != "q" && command != "Q")
+ {
+ dx = Real(strtod(GetToken(d,token,i).c_str(),NULL)) / bounds.w;
+ assert(GetToken(d,token,i) == ",");
+ dy = Real(strtod(GetToken(d,token,i).c_str(),NULL)) / bounds.h;
+ x[3] = (relative) ? x[0] + dx : dx;
+ y[3] = (relative) ? y[0] + dy : dy;
+ }
+ else
+ {
+ 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);
- 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]));
+ 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[2];
- y[0] = y[2];
+ x[0] = x[3];
+ y[0] = y[3];
}
- else if (command == "l")
+ else if (command == "l" || command == "L")
{
Debug("Construct lineto command");
- x[1] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
+ Real dx = Real(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;
+ Real dy = Real(strtod(GetToken(d,token,i).c_str(),NULL)) / bounds.h;
+
+ x[1] = (relative) ? x[0] + dx : dx;
+ y[1] = (relative) ? y[0] + dy : dy;
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);
+ x[3] = x[1];
+ y[3] = y[1];
+
+ 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] 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];
+ x[0] = x[3];
+ y[0] = y[3];
}
- else if (command == "z")
+ else if (command == "z" || command == "Z")
{
Debug("Construct returnto command");
x[1] = x0;
y[1] = y0;
x[2] = x0;
y[2] = y0;
+ x[3] = x0;
+ y[3] = y0;
- unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2]));
- Add(BEZIER,bounds,index);
+ 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]));
- x[0] = x[2];
- y[0] = y[2];
+ x[0] = x[3];
+ y[0] = y[3];
command = "m";
}
else
Warn("Unrecognised command \"%s\", set to \"m\"", command.c_str());
command = "m";
}
+
+ if (!start)
+ {
+ x0 = x[0];
+ y0 = y[0];
+ start = true;
+ }
prev_i = i;
}
}
+
+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);
+
+ 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;
+ unsigned bezier_index;
+ switch(instructions[i].type)
+ {
+ // Move To
+ case STBTT_vmove:
+ break;
+ // Line To
+ case STBTT_vline:
+ bezier_index = AddBezierData(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));
+ Add(BEZIER,Rect(0,0,1,1),bezier_index);
+ 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)
+ bezier_index = AddBezierData(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));
+ Add(BEZIER,Rect(0,0,1,1),bezier_index);
+ break;
+ }
+ }
+
+ stbtt_FreeShape(font, instructions);
+}
git.ucc.asn.au / ipdf / code.git / blobdiff
UCC git Repository :: git.ucc.asn.au