Merge to XFA: Separate agg-authored code from fx-authored code.

Original Review URL: https://codereview.chromium.org/1152743007.
BUG=pdfium:166
R=brucedawson@chromium.org, thestig@chromium.org
TBR=brucedawson@chromium.org, thestig@chromium.org

Review URL: https://codereview.chromium.org/1186423003.

1 files changed, 282 insertions, 0 deletions

diff --git a/third_party/agg23/agg_basics.h b/third_party/agg23/agg_basics.h
new file mode 100644
index 0000000000..d2fad58feb
--- /dev/null
+++ b/third_party/agg23/agg_basics.h
@@ -0,0 +1,282 @@
+
+//----------------------------------------------------------------------------
+// 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_BASICS_INCLUDED
+#define AGG_BASICS_INCLUDED
+#ifndef AGG_INT8
+#define AGG_INT8 signed char
+#endif
+#ifndef AGG_INT8U
+#define AGG_INT8U unsigned char
+#endif
+#ifndef AGG_INT16
+#define AGG_INT16 short
+#endif
+#ifndef AGG_INT16U
+#define AGG_INT16U unsigned short
+#endif
+#ifndef AGG_INT32
+#define AGG_INT32 int
+#endif
+#ifndef AGG_INT32U
+#define AGG_INT32U unsigned
+#endif
+#ifndef AGG_INT64
+#define AGG_INT64 signed long long
+#endif
+#ifndef AGG_INT64U
+#define AGG_INT64U unsigned long long
+#endif
+#define AGG_INLINE inline
+namespace agg
+{
+typedef AGG_INT8   int8;
+typedef AGG_INT8U  int8u;
+typedef AGG_INT16  int16;
+typedef AGG_INT16U int16u;
+typedef AGG_INT32  int32;
+typedef AGG_INT32U int32u;
+typedef AGG_INT64  int64;
+typedef AGG_INT64U int64u;
+typedef unsigned char cover_type;
+enum cover_scale_e {
+    cover_shift = 8,
+    cover_size  = 1 << cover_shift,
+    cover_mask  = cover_size - 1,
+    cover_none  = 0,
+    cover_full  = cover_mask
+};
+template<class T> struct rect_base  {
+    typedef rect_base<T> self_type;
+    T x1;
+    T y1;
+    T x2;
+    T y2;
+    rect_base() {}
+    rect_base(T x1_, T y1_, T x2_, T y2_) :
+        x1(x1_), y1(y1_), x2(x2_), y2(y2_) {}
+    const self_type& normalize()
+    {
+        T t;
+        if(x1 > x2) {
+            t = x1;
+            x1 = x2;
+            x2 = t;
+        }
+        if(y1 > y2) {
+            t = y1;
+            y1 = y2;
+            y2 = t;
+        }
+        return *this;
+    }
+    bool clip(const self_type& r)
+    {
+        if(x2 > r.x2) {
+            x2 = r.x2;
+        }
+        if(y2 > r.y2) {
+            y2 = r.y2;
+        }
+        if(x1 < r.x1) {
+            x1 = r.x1;
+        }
+        if(y1 < r.y1) {
+            y1 = r.y1;
+        }
+        return x1 <= x2 && y1 <= y2;
+    }
+    bool is_valid() const
+    {
+        return x1 <= x2 && y1 <= y2;
+    }
+};
+template<class Rect>
+inline Rect intersect_rectangles(const Rect& r1, const Rect& r2)
+{
+    Rect r = r1;
+    if(r.x2 > r2.x2) {
+        r.x2 = r2.x2;
+    }
+    if(r.y2 > r2.y2) {
+        r.y2 = r2.y2;
+    }
+    if(r.x1 < r2.x1) {
+        r.x1 = r2.x1;
+    }
+    if(r.y1 < r2.y1) {
+        r.y1 = r2.y1;
+    }
+    return r;
+}
+template<class Rect>
+inline Rect unite_rectangles(const Rect& r1, const Rect& r2)
+{
+    Rect r = r1;
+    if(r.x2 < r2.x2) {
+        r.x2 = r2.x2;
+    }
+    if(r.y2 < r2.y2) {
+        r.y2 = r2.y2;
+    }
+    if(r.x1 > r2.x1) {
+        r.x1 = r2.x1;
+    }
+    if(r.y1 > r2.y1) {
+        r.y1 = r2.y1;
+    }
+    return r;
+}
+typedef rect_base<int>    rect;
+typedef rect_base<FX_FLOAT> rect_d;
+enum path_commands_e {
+    path_cmd_stop     = 0,
+    path_cmd_move_to  = 1,
+    path_cmd_line_to  = 2,
+    path_cmd_curve3   = 3,
+    path_cmd_curve4   = 4,
+    path_cmd_curveN   = 5,
+    path_cmd_catrom   = 6,
+    path_cmd_ubspline = 7,
+    path_cmd_end_poly = 0x0F,
+    path_cmd_mask     = 0x0F
+};
+enum path_flags_e {
+    path_flags_none  = 0,
+    path_flags_ccw   = 0x10,
+    path_flags_cw    = 0x20,
+    path_flags_close = 0x40,
+    path_flags_jr	 = 0x80,
+    path_flags_mask  = 0xF0
+};
+inline bool is_vertex(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return c >= path_cmd_move_to && c < path_cmd_end_poly;
+}
+inline bool is_drawing(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return c >= path_cmd_line_to && c < path_cmd_end_poly;
+}
+inline bool is_stop(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return c == path_cmd_stop;
+}
+inline bool is_move_to(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return c == path_cmd_move_to;
+}
+inline bool is_line_to(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return c == path_cmd_line_to;
+}
+inline bool is_curve(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return c == path_cmd_curve3 || c == path_cmd_curve4;
+}
+inline bool is_curve3(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return c == path_cmd_curve3;
+}
+inline bool is_curve4(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return c == path_cmd_curve4;
+}
+inline bool is_end_poly(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return (c & path_cmd_mask) == path_cmd_end_poly;
+}
+inline bool is_close(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return (c & ~(path_flags_cw | path_flags_ccw)) ==
+           (path_cmd_end_poly | path_flags_close);
+}
+inline bool is_next_poly(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return is_stop(c) || is_move_to(c) || is_end_poly(c);
+}
+inline bool is_cw(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return (c & path_flags_cw) != 0;
+}
+inline bool is_ccw(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return (c & path_flags_ccw) != 0;
+}
+inline bool is_oriented(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return (c & (path_flags_cw | path_flags_ccw)) != 0;
+}
+inline bool is_closed(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return (c & path_flags_close) != 0;
+}
+inline unsigned get_close_flag(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return c & path_flags_close;
+}
+inline unsigned clear_orientation(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return c & ~(path_flags_cw | path_flags_ccw);
+}
+inline unsigned get_orientation(unsigned c)
+{
+    c &= ~path_flags_jr;
+    return c & (path_flags_cw | path_flags_ccw);
+}
+inline unsigned set_orientation(unsigned c, unsigned o)
+{
+    c &= ~path_flags_jr;
+    return clear_orientation(c) | o;
+}
+struct point_type  {
+    FX_FLOAT x, y;
+    unsigned flag;
+    point_type() {}
+    point_type(FX_FLOAT x_, FX_FLOAT y_, unsigned flag_ = 0) : x(x_), y(y_), flag(flag_) {}
+};
+struct point_type_flag : public point_type {
+    unsigned flag;
+    point_type_flag()
+    {
+        flag = 0;
+    }
+    point_type_flag(FX_FLOAT x_, FX_FLOAT y_, unsigned flag_ = 0) : point_type(x_, y_), flag(flag_) {}
+};
+struct vertex_type  {
+    FX_FLOAT   x, y;
+    unsigned cmd;
+    vertex_type() {}
+    vertex_type(FX_FLOAT x_, FX_FLOAT y_, unsigned cmd_) :
+        x(x_), y(y_), cmd(cmd_) {}
+};
+}
+#endif