Repo created

3party/agg/agg_gsv_text.h

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+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// Class gsv_text
+//
+//----------------------------------------------------------------------------
+
+#ifndef AGG_GSV_TEXT_INCLUDED
+#define AGG_GSV_TEXT_INCLUDED
+
+#include "agg_array.h"
+#include "agg_conv_stroke.h"
+#include "agg_conv_transform.h"
+
+namespace agg
+{
+
+
+    //---------------------------------------------------------------gsv_text
+    //
+    // See Implementation agg_gsv_text.cpp 
+    //
+    class gsv_text
+    {
+        enum status
+        {
+            initial,
+            next_char,
+            start_glyph,
+            glyph
+        };
+
+    public:
+        gsv_text();
+
+        void font(const void* font);
+        void flip(bool flip_y) { m_flip = flip_y; }
+        void load_font(const char* file);
+        void size(double height, double width=0.0);
+        void space(double space);
+        void line_space(double line_space);
+        void start_point(double x, double y);
+        void text(const char* text);
+        
+        double text_width();
+
+        void rewind(unsigned path_id);
+        unsigned vertex(double* x, double* y);
+
+    private:
+        // not supposed to be copied
+        gsv_text(const gsv_text&);
+        const gsv_text& operator = (const gsv_text&);
+
+        int16u value(const int8u* p) const
+        {
+            int16u v;
+            if(m_big_endian)
+            {
+                 *(int8u*)&v      = p[1];
+                *((int8u*)&v + 1) = p[0];
+            }
+            else
+            {
+                 *(int8u*)&v      = p[0];
+                *((int8u*)&v + 1) = p[1];
+            }
+            return v;
+        }
+
+    private:
+        double          m_x;
+        double          m_y;
+        double          m_start_x;
+        double          m_width;
+        double          m_height;
+        double          m_space;
+        double          m_line_space;
+        char            m_chr[2];
+        char*           m_text;
+        pod_array<char> m_text_buf;
+        char*           m_cur_chr;
+        const void*     m_font;
+        pod_array<char> m_loaded_font;
+        status          m_status;
+        bool            m_big_endian;
+        bool            m_flip;
+        int8u*          m_indices;
+        int8*           m_glyphs;
+        int8*           m_bglyph;
+        int8*           m_eglyph;
+        double          m_w;
+        double          m_h;
+    };
+
+
+
+
+    //--------------------------------------------------------gsv_text_outline
+    template<class Transformer = trans_affine> class gsv_text_outline
+    {
+    public:
+        gsv_text_outline(gsv_text& text, const Transformer& trans) :
+          m_polyline(text),
+          m_trans(m_polyline, trans)
+        {
+        }
+
+        void width(double w) 
+        { 
+            m_polyline.width(w); 
+        }
+
+        void transformer(const Transformer* trans) 
+        {
+            m_trans->transformer(trans);
+        }
+
+        void rewind(unsigned path_id) 
+        { 
+            m_trans.rewind(path_id); 
+            m_polyline.line_join(round_join);
+            m_polyline.line_cap(round_cap);
+        }
+
+        unsigned vertex(double* x, double* y)
+        {
+            return m_trans.vertex(x, y);
+        }
+
+    private:
+        conv_stroke<gsv_text> m_polyline;
+        conv_transform<conv_stroke<gsv_text>, Transformer> m_trans;
+    };
+
+
+
+}
+
+
+#endif