1
2 //----------------------------------------------------------------------------
3 // XYQ: 2006-01-22 Copied from AGG project.
4 // TODO: This file uses intensive floating point operations, so it's NOT suitable
5 // for platforms like Symbian OS. We need to change to FIX format.
6 //----------------------------------------------------------------------------
7 //----------------------------------------------------------------------------
8 // Anti-Grain Geometry - Version 2.3
9 // Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
10 //
11 // Permission to copy, use, modify, sell and distribute this software
12 // is granted provided this copyright notice appears in all copies.
13 // This software is provided "as is" without express or implied
14 // warranty, and with no claim as to its suitability for any purpose.
15 //
16 //----------------------------------------------------------------------------
17 // Contact: mcseem@antigrain.com
18 // mcseemagg@yahoo.com
19 // http://www.antigrain.com
20 //----------------------------------------------------------------------------
21 //
22 // Class path_storage
23 //
24 //----------------------------------------------------------------------------
25
26 #include "agg_path_storage.h"
27
28 #include "agg_math.h"
29 #include "core/fxcrt/fx_memory.h"
30
31 namespace pdfium
32 {
33 namespace agg
34 {
~path_storage()35 path_storage::~path_storage()
36 {
37 if(m_total_blocks) {
38 float** coord_blk = m_coord_blocks + m_total_blocks - 1;
39 while(m_total_blocks--) {
40 FX_Free(*coord_blk);
41 --coord_blk;
42 }
43 FX_Free(m_coord_blocks);
44 }
45 }
46 path_storage::path_storage() = default;
path_storage(path_storage && other)47 path_storage::path_storage(path_storage&& other) {
48 m_total_vertices = other.m_total_vertices;
49 m_total_blocks = other.m_total_blocks;
50 m_max_blocks = other.m_max_blocks;
51 m_coord_blocks = other.m_coord_blocks;
52 m_cmd_blocks = other.m_cmd_blocks;
53 m_iterator = other.m_iterator;
54 other.m_total_vertices = 0;
55 other.m_total_blocks = 0;
56 other.m_max_blocks = 0;
57 other.m_coord_blocks = nullptr;
58 other.m_cmd_blocks = nullptr;
59 other.m_iterator = 0;
60 }
allocate_block(unsigned nb)61 void path_storage::allocate_block(unsigned nb)
62 {
63 if(nb >= m_max_blocks) {
64 float** new_coords =
65 FX_Alloc2D(float*, m_max_blocks + block_pool, 2);
66 unsigned char** new_cmds =
67 (unsigned char**)(new_coords + m_max_blocks + block_pool);
68 if(m_coord_blocks) {
69 memcpy(new_coords, m_coord_blocks, m_max_blocks * sizeof(float*));
70 memcpy(new_cmds, m_cmd_blocks, m_max_blocks * sizeof(unsigned char*));
71 FX_Free(m_coord_blocks);
72 }
73 m_coord_blocks = new_coords;
74 m_cmd_blocks = new_cmds;
75 m_max_blocks += block_pool;
76 }
77 m_coord_blocks[nb] =
78 FX_Alloc( float, block_size * 2 +
79 block_size /
80 (sizeof(float) / sizeof(unsigned char)));
81 m_cmd_blocks[nb] =
82 (unsigned char*)(m_coord_blocks[nb] + block_size * 2);
83 m_total_blocks++;
84 }
rewind(unsigned path_id)85 void path_storage::rewind(unsigned path_id)
86 {
87 m_iterator = path_id;
88 }
curve4(float x_ctrl1,float y_ctrl1,float x_ctrl2,float y_ctrl2,float x_to,float y_to)89 void path_storage::curve4(float x_ctrl1, float y_ctrl1,
90 float x_ctrl2, float y_ctrl2,
91 float x_to, float y_to)
92 {
93 add_vertex(x_ctrl1, y_ctrl1, path_cmd_curve4);
94 add_vertex(x_ctrl2, y_ctrl2, path_cmd_curve4);
95 add_vertex(x_to, y_to, path_cmd_curve4);
96 }
end_poly()97 void path_storage::end_poly()
98 {
99 if(m_total_vertices) {
100 if(is_vertex(command(m_total_vertices - 1))) {
101 add_vertex(0, 0, unsigned{path_cmd_end_poly} | path_flags_close);
102 }
103 }
104 }
105 }
106 } // namespace pdfium
107