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authorTom Sepez <tsepez@chromium.org>2015-06-17 10:01:00 -0700
committerTom Sepez <tsepez@chromium.org>2015-06-17 10:01:00 -0700
commitb7d358b498800e4c240d381fa6f098af17a4d95b (patch)
treeaa0d8677af748caf9881ecd011af2b00af925188 /third_party/agg23/agg_conv_adaptor_vcgen.h
parent9555022ee550ee97415a86957686cc28716c4dee (diff)
downloadpdfium-b7d358b498800e4c240d381fa6f098af17a4d95b.tar.xz
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.
Diffstat (limited to 'third_party/agg23/agg_conv_adaptor_vcgen.h')
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diff --git a/third_party/agg23/agg_conv_adaptor_vcgen.h b/third_party/agg23/agg_conv_adaptor_vcgen.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_CONV_ADAPTOR_VCGEN_INCLUDED
+#define AGG_CONV_ADAPTOR_VCGEN_INCLUDED
+#include "agg_basics.h"
+namespace agg
+{
+struct null_markers {
+ void remove_all() {}
+ void add_vertex(FX_FLOAT, FX_FLOAT, unsigned) {}
+ void prepare_src() {}
+ void rewind(unsigned) {}
+ unsigned vertex(FX_FLOAT*, FX_FLOAT*)
+ {
+ return path_cmd_stop;
+ }
+};
+template<class VertexSource,
+ class Generator,
+ class Markers = null_markers> class conv_adaptor_vcgen
+{
+ enum status {
+ initial,
+ accumulate,
+ generate
+ };
+public:
+ conv_adaptor_vcgen(VertexSource& source) :
+ m_source(&source),
+ m_status(initial)
+ {}
+ void set_source(VertexSource& source)
+ {
+ m_source = &source;
+ }
+ Generator& generator()
+ {
+ return m_generator;
+ }
+ const Generator& generator() const
+ {
+ return m_generator;
+ }
+ Markers& markers()
+ {
+ return m_markers;
+ }
+ const Markers& markers() const
+ {
+ return m_markers;
+ }
+ void rewind(unsigned path_id)
+ {
+ m_source->rewind(path_id);
+ m_status = initial;
+ }
+ unsigned vertex(FX_FLOAT* x, FX_FLOAT* y);
+private:
+ conv_adaptor_vcgen(const conv_adaptor_vcgen<VertexSource, Generator, Markers>&);
+ const conv_adaptor_vcgen<VertexSource, Generator, Markers>&
+ operator = (const conv_adaptor_vcgen<VertexSource, Generator, Markers>&);
+ VertexSource* m_source;
+ Generator m_generator;
+ Markers m_markers;
+ status m_status;
+ unsigned m_last_cmd;
+ FX_FLOAT m_start_x;
+ FX_FLOAT m_start_y;
+};
+template<class VertexSource, class Generator, class Markers>
+unsigned conv_adaptor_vcgen<VertexSource, Generator, Markers>::vertex(FX_FLOAT* x, FX_FLOAT* y)
+{
+ unsigned cmd = path_cmd_stop;
+ bool done = false;
+ while(!done) {
+ switch(m_status) {
+ case initial:
+ m_markers.remove_all();
+ m_last_cmd = m_source->vertex(&m_start_x, &m_start_y);
+ m_status = accumulate;
+ case accumulate:
+ if(is_stop(m_last_cmd)) {
+ return path_cmd_stop;
+ }
+ m_generator.remove_all();
+ m_generator.add_vertex(m_start_x, m_start_y, path_cmd_move_to);
+ m_markers.add_vertex(m_start_x, m_start_y, path_cmd_move_to);
+ for(;;) {
+ cmd = m_source->vertex(x, y);
+ if(is_vertex(cmd)) {
+ m_last_cmd = cmd;
+ if(is_move_to(cmd)) {
+ m_start_x = *x;
+ m_start_y = *y;
+ break;
+ }
+ m_generator.add_vertex(*x, *y, cmd);
+ m_markers.add_vertex(*x, *y, path_cmd_line_to);
+ } else {
+ if(is_stop(cmd)) {
+ m_last_cmd = path_cmd_stop;
+ break;
+ }
+ if(is_end_poly(cmd)) {
+ m_generator.add_vertex(*x, *y, cmd);
+ break;
+ }
+ }
+ }
+ m_generator.rewind(0);
+ m_status = generate;
+ case generate:
+ cmd = m_generator.vertex(x, y);
+ if(is_stop(cmd)) {
+ m_status = accumulate;
+ break;
+ }
+ done = true;
+ break;
+ }
+ }
+ return cmd;
+}
+}
+#endif