Béziers magically work with the QuadTree (sometimes)

[ipdf/code.git] / src / document.cpp

diff --git a/src/document.cpp b/src/document.cpp
index 35673d4..ead1b8e 100644 (file)
--- a/src/document.cpp
+++ b/src/document.cpp
@@ -130,8 +130,27 @@ int Document::ClipObjectToQuadChild(int object_id, QuadTreeNodeChildren type)
                m_objects.data_indices.push_back(m_objects.data_indices[object_id]);
                return 1;
                }
-       case GROUP:
-               break;
+       case BEZIER:
+               {
+               Rect child_node_bounds = TransformFromQuadChild({0,0,1,1}, type);
+               Rect clip_bezier_bounds;
+               clip_bezier_bounds.x = (child_node_bounds.x - m_objects.bounds[object_id].x) / m_objects.bounds[object_id].w;
+               clip_bezier_bounds.y = (child_node_bounds.y - m_objects.bounds[object_id].y) / m_objects.bounds[object_id].h;
+               clip_bezier_bounds.w = child_node_bounds.w / m_objects.bounds[object_id].w;
+               clip_bezier_bounds.h = child_node_bounds.h / m_objects.bounds[object_id].h;
+               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);
+                       //new_bounds = TransformToQuadChild(new_bounds, type);
+                       //Bezier new_curve_data = new_curves[i].ToRelative(new_bounds);
+                       unsigned index = AddBezierData(new_curves[i]);
+                       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));
@@ -545,6 +564,24 @@ void Document::ParseSVGNode(pugi::xml_node & root, SVGMatrix & parent_transform)
        }
 }
 
+/**
+ * Parse an SVG string into a rectangle
+ */
+void Document::ParseSVG(const string & input, const Rect & bounds)
+{
+       using namespace pugi;
+       
+       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
  */
@@ -557,7 +594,7 @@ void Document::LoadSVG(const string & filename, const Rect & bounds)
        xml_parse_result result = doc_xml.load(input);
        
        if (!result)
-               Fatal("Couldn't load \"%s\" - %s", filename.c_str(), result.description());
+               Error("Couldn't load \"%s\" - %s", filename.c_str(), result.description());
                
        Debug("Loaded XML - %s", result.description());
        
@@ -615,6 +652,8 @@ pair<unsigned, unsigned> Document::ParseSVGPathData(const string & d, const SVGM
                        x[0] = (relative) ? x[0] + dx : dx;
                        y[0] = (relative) ? y[0] + dy : dy;
                        
+                       x0 = x[0];
+                       y0 = y[0];
                        //Debug("mmoveto %f,%f", Float(x[0]),Float(y[0]));
                        command = (command == "m") ? "l" : "L";
                }
@@ -756,7 +795,7 @@ void Document::SetFont(const string & font_filename)
                free(m_font_data);
        }
        
-       FILE *font_file = fopen("DejaVuSansMono.ttf", "rb");
+       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);
@@ -778,11 +817,11 @@ void Document::AddText(const string & text, Real scale, Real x, Real y)
                return;
        }
                
-       float font_scale = stbtt_ScaleForPixelHeight(&m_font, scale);
        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)
        {
@@ -796,11 +835,11 @@ void Document::AddText(const string & text, Real scale, Real x, Real y)
                        
                int advance_width = 0, left_side_bearing = 0, kerning = 0;
                stbtt_GetCodepointHMetrics(&m_font, text[i], &advance_width, &left_side_bearing);
-               if (i > 1)
+               if (i >= 1)
                {
                        kerning = stbtt_GetCodepointKernAdvance(&m_font, text[i-1], text[i]);
                }
-               x += Real(font_scale) * Real(left_side_bearing + kerning);
+               x += Real(font_scale) * Real(kerning);
                AddFontGlyphAtPoint(&m_font, text[i], font_scale, x, y);
                x += Real(font_scale) * Real(advance_width);
        }
@@ -860,6 +899,7 @@ void Document::AddFontGlyphAtPoint(stbtt_fontinfo *font, int character, Real sca
        {
                AddGroup(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);
 }