Some code cleanup, quadtree fixes, non-quadtree build fixes.
authorDavid Gow <david@ingeniumdigital.com>
Fri, 17 Oct 2014 09:58:29 +0000 (17:58 +0800)
committerDavid Gow <david@ingeniumdigital.com>
Fri, 17 Oct 2014 09:58:29 +0000 (17:58 +0800)
src/document.cpp
src/document.h
src/rect.h

index 256950b..5b04bd2 100644 (file)
@@ -457,22 +457,83 @@ unsigned Document::AddBezier(const Bezier & bezier)
        unsigned index = AddBezierData(data);
        return Add(BEZIER, bounds, index);
 }
+// Adds an object to the Document, clipping it to m_clip_rect.
+// Helper function called by Document::Add()
+int Document::AddClip(ObjectType type, const Rect& bounds, unsigned data_index, const Rect& clip_rect)
+{
+       PROFILE_SCOPE("Document::AddAndClip");
+       switch (type)
+       {
+       case RECT_FILLED:
+       case RECT_OUTLINE:
+       case PATH:
+               {
+               Rect obj_bounds = clip_rect.Clip(bounds);
+               m_objects.bounds.push_back(obj_bounds);
+               m_objects.types.push_back(type);
+               m_objects.data_indices.push_back(data_index);
+               return 1;
+               }
+       case BEZIER:
+               {
+               // If we're entirely within the clipping rect, no clipping need occur.
+               if (clip_rect.Contains(bounds))
+               {
+                       m_objects.bounds.push_back(bounds);
+                       m_objects.types.push_back(type);
+                       m_objects.data_indices.push_back(data_index);
+                       return 1;
+               }
+               Rect clip_bezier_bounds = TransformRectCoordinates(bounds, clip_rect); 
+               std::vector<Bezier> new_curves = m_objects.beziers[data_index].ClipToRectangle(clip_bezier_bounds);
+               for (size_t i = 0; i < new_curves.size(); ++i)
+               {
+                       Bezier new_curve_data = new_curves[i].ToAbsolute(bounds);
+                       Rect 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:
+               m_objects.bounds.push_back(bounds);
+               m_objects.types.push_back(type);
+               m_objects.data_indices.push_back(data_index);
+               return 1;
+       }
+       return 0;
+}
 
 unsigned Document::Add(ObjectType type, const Rect & bounds, unsigned data_index, QuadTreeIndex qti)
 {
        PROFILE_SCOPE("Document::Add");
        Rect new_bounds = bounds;
+       int num_added = 1;
+       bool still_to_add = true;
 #ifndef QUADTREE_DISABLED
        if (qti == -1) qti = m_current_insert_node;
        if (qti != -1)
        {
-               // I am ashamed, yes.
+               // Move the object to the quadtree node it should be in.
                m_quadtree.GetCanonicalCoords(qti, new_bounds.x, new_bounds.y, this);
+               Rect cliprect = Rect(0,0,1,1);
+               // If an object spans multiple quadtree nodes...
+               if (!cliprect.Contains(new_bounds))
+               {
+                       num_added = AddClip(type, new_bounds, data_index, cliprect);
+                       still_to_add = false;
+               }
        }
 #endif
-       m_objects.types.push_back(type);
-       m_objects.bounds.push_back(new_bounds);
-       m_objects.data_indices.push_back(data_index);
+       if (still_to_add)
+       {
+               m_objects.types.push_back(type);
+               m_objects.bounds.push_back(new_bounds);
+               m_objects.data_indices.push_back(data_index);
+       }
 #ifndef QUADTREE_DISABLED
        if (qti != -1)
        {
@@ -481,7 +542,7 @@ unsigned Document::Add(ObjectType type, const Rect & bounds, unsigned data_index
                {
                        if (m_count == m_quadtree.nodes[new_qti].object_end+1)
                        {
-                               m_quadtree.nodes[new_qti].object_end++;
+                               m_quadtree.nodes[new_qti].object_end += num_added;
                                goto done;
                        }
                        new_qti = m_quadtree.nodes[new_qti].next_overlay;
@@ -493,15 +554,15 @@ unsigned Document::Add(ObjectType type, const Rect & bounds, unsigned data_index
                        m_quadtree.nodes[overlay].object_begin = m_count;
                        // All objects are dirty.
                        m_quadtree.nodes[overlay].object_dirty = m_count;
-                       m_quadtree.nodes[overlay].object_end = m_count+1;
+                       m_quadtree.nodes[overlay].object_end = m_count+num_added;
                        m_quadtree.nodes[overlay].next_overlay = -1;
                        m_quadtree.nodes[new_qti].next_overlay = overlay;
                        new_qti = overlay;
                }
 done: // matches is not amused, but sulix is nice and moved it inside the #ifdef for him.
-               m_count++;
+               m_count += num_added;
        }
-       return m_count-1;
+       return m_count-num_added;
 #else // words fail me (still not amused)
        return (m_count++);
 #endif
index fd6e574..f98833a 100644 (file)
@@ -29,11 +29,14 @@ namespace IPDF
        class Document
        {
                public:
-                       Document(const std::string & filename = "", const std::string & font_filename = "fonts/DejaVuSansMono.ttf") : m_objects(), m_current_insert_node(-1), m_count(0), m_font_data(NULL), m_font()
+                       Document(const std::string & filename = "", const std::string & font_filename = "fonts/DejaVuSansMono.ttf") : m_objects(), m_count(0), m_font_data(NULL), m_font()
                        {
                                Load(filename);
                                if (font_filename != "")
                                        SetFont(font_filename);
+#ifndef QUADTREE_DISABLED
+                               m_current_insert_node = -1;
+#endif
                        }
                        virtual ~Document() 
                        {
@@ -54,6 +57,7 @@ namespace IPDF
 
                        unsigned AddPath(unsigned start_index, unsigned end_index, const Colour & shading=Colour(0.6,0.6,0.6,1), const Colour & stroke=Colour(0,0,0,0));
                        unsigned AddBezier(const Bezier & bezier);
+                       int AddClip(ObjectType type, const Rect & bounds, unsigned data_index, const Rect & clip_rect);
                        unsigned Add(ObjectType type, const Rect & bounds, unsigned data_index = 0, QuadTreeIndex qtnode = -1);
                        unsigned AddBezierData(const Bezier & bezier);
                        unsigned AddPathData(const Path & path);
index 0188446..78c5a70 100644 (file)
@@ -38,6 +38,11 @@ namespace IPDF
                        if (y > other.y + other.h) return false;
                        return true;
                }
+
+               inline bool Contains(const TRect& other) const
+               {
+                       return PointIn(other.x, other.y) && PointIn(other.x + other.w, other.y + other.h);
+               }
                
                template <class B> TRect<B> Convert() const {return TRect<B>(B(x), B(y), B(w), B(h));}
                
@@ -49,6 +54,31 @@ namespace IPDF
                        h = T(equ.h);
                        return *this;
                }
+
+               // Clips "other" to "this"
+               inline TRect Clip(const TRect& other) const
+               {
+                       TRect clipped = other;
+                       if (clipped.x < x)
+                       {
+                               clipped.w += clipped.x - x;
+                               clipped.x = x;
+                       }
+                       if (clipped.y < y)
+                       {
+                               clipped.h += clipped.y - y;
+                               clipped.y = 0;
+                       }
+                       if (clipped.x + clipped.w > x + w)
+                       {
+                               clipped.w += ((x + w) - (clipped.x + clipped.w));
+                       }
+                       if (clipped.y + clipped.h > y + h)
+                       {
+                               clipped.h += ((y + h) - (clipped.y + clipped.h));
+                       }
+                       return clipped;
+               }
        };
 
 

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