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Diffstat (limited to 'agg/inc/agg_glyph_raster_bin.h')
-rwxr-xr-xagg/inc/agg_glyph_raster_bin.h155
1 files changed, 155 insertions, 0 deletions
diff --git a/agg/inc/agg_glyph_raster_bin.h b/agg/inc/agg_glyph_raster_bin.h
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+++ b/agg/inc/agg_glyph_raster_bin.h
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+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.3
+// 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
+//----------------------------------------------------------------------------
+
+#ifndef AGG_GLYPH_RASTER_BIN_INCLUDED
+#define AGG_GLYPH_RASTER_BIN_INCLUDED
+
+#include <string.h>
+#include "agg_basics.h"
+
+namespace agg
+{
+
+ //========================================================glyph_raster_bin
+ template<class ColorT> class glyph_raster_bin
+ {
+ public:
+ typedef ColorT color_type;
+
+ //--------------------------------------------------------------------
+ struct glyph_rect
+ {
+ int x1,y1,x2,y2;
+ double dx, dy;
+ };
+
+ //--------------------------------------------------------------------
+ glyph_raster_bin(const int8u* font) :
+ m_font(font),
+ m_big_endian(false)
+ {
+ int t = 1;
+ if(*(char*)&t == 0) m_big_endian = true;
+ memset(m_span, 0, sizeof(m_span));
+ }
+
+ //--------------------------------------------------------------------
+ const int8u* font() const { return m_font; }
+ void font(const int8u* f) { m_font = f; }
+
+ //--------------------------------------------------------------------
+ double height() const { return m_font[0]; }
+ double base_line() const { return m_font[1]; }
+
+ //--------------------------------------------------------------------
+ template<class CharT>
+ double width(const CharT* str) const
+ {
+ unsigned start_char = m_font[2];
+ unsigned num_chars = m_font[3];
+
+ unsigned w = 0;
+ while(*str)
+ {
+ unsigned glyph = *str;
+ const int8u* bits = m_font + 4 + num_chars * 2 +
+ value(m_font + 4 + (glyph - start_char) * 2);
+ w += *bits;
+ ++str;
+ }
+ return w;
+ }
+
+ //--------------------------------------------------------------------
+ void prepare(glyph_rect* r, double x, double y, unsigned glyph, bool flip)
+ {
+ unsigned start_char = m_font[2];
+ unsigned num_chars = m_font[3];
+
+ m_bits = m_font + 4 + num_chars * 2 +
+ value(m_font + 4 + (glyph - start_char) * 2);
+
+ m_glyph_width = *m_bits++;
+ m_glyph_byte_width = (m_glyph_width + 7) >> 3;
+
+ r->x1 = int(x);
+ r->x2 = r->x1 + m_glyph_width - 1;
+ if(flip)
+ {
+ r->y1 = int(y) - m_font[0] + m_font[1];
+ r->y2 = r->y1 + m_font[0] - 1;
+ }
+ else
+ {
+ r->y1 = int(y) - m_font[1] + 1;
+ r->y2 = r->y1 + m_font[0] - 1;
+ }
+ r->dx = m_glyph_width;
+ r->dy = 0;
+ }
+
+ //--------------------------------------------------------------------
+ const cover_type* span(unsigned i)
+ {
+ i = m_font[0] - i - 1;
+ const int8u* bits = m_bits + i * m_glyph_byte_width;
+ unsigned j;
+ unsigned val = *bits;
+ unsigned nb = 0;
+ for(j = 0; j < m_glyph_width; ++j)
+ {
+ m_span[j] = (cover_type)((val & 0x80) ? cover_full : cover_none);
+ val <<= 1;
+ if(++nb >= 8)
+ {
+ val = *++bits;
+ nb = 0;
+ }
+ }
+ return m_span;
+ }
+
+ private:
+ //--------------------------------------------------------------------
+ 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;
+ }
+
+
+ //--------------------------------------------------------------------
+ const int8u* m_font;
+ bool m_big_endian;
+ cover_type m_span[32];
+ const int8u* m_bits;
+ unsigned m_glyph_width;
+ unsigned m_glyph_byte_width;
+ };
+
+
+}
+
+#endif