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: [email protected]
18 // [email protected]
19 // http://www.antigrain.com
20 //----------------------------------------------------------------------------
21 //
22 // Class path_storage
23 //
24 //----------------------------------------------------------------------------
25
26 #include "agg_path_storage.h"
27
28 #include <string.h>
29
30 #include "agg_math.h"
31 #include "core/fxcrt/fx_memory.h"
32
33 namespace pdfium
34 {
35 namespace agg
36 {
~path_storage()37 path_storage::~path_storage()
38 {
39 if(m_total_blocks) {
40 float** coord_blk = m_coord_blocks + m_total_blocks - 1;
41 while(m_total_blocks--) {
42 FX_Free(*coord_blk);
43 --coord_blk;
44 }
45 FX_Free(m_coord_blocks);
46 }
47 }
48 path_storage::path_storage() = default;
path_storage(path_storage && other)49 path_storage::path_storage(path_storage&& other) {
50 m_total_vertices = other.m_total_vertices;
51 m_total_blocks = other.m_total_blocks;
52 m_max_blocks = other.m_max_blocks;
53 m_coord_blocks = other.m_coord_blocks;
54 m_cmd_blocks = other.m_cmd_blocks;
55 m_iterator = other.m_iterator;
56 other.m_total_vertices = 0;
57 other.m_total_blocks = 0;
58 other.m_max_blocks = 0;
59 other.m_coord_blocks = nullptr;
60 other.m_cmd_blocks = nullptr;
61 other.m_iterator = 0;
62 }
allocate_block(unsigned nb)63 void path_storage::allocate_block(unsigned nb)
64 {
65 if(nb >= m_max_blocks) {
66 float** new_coords =
67 FX_Alloc2D(float*, m_max_blocks + block_pool, 2);
68 unsigned char** new_cmds =
69 (unsigned char**)(new_coords + m_max_blocks + block_pool);
70 if(m_coord_blocks) {
71 memcpy(new_coords, m_coord_blocks, m_max_blocks * sizeof(float*));
72 memcpy(new_cmds, m_cmd_blocks, m_max_blocks * sizeof(unsigned char*));
73 FX_Free(m_coord_blocks);
74 }
75 m_coord_blocks = new_coords;
76 m_cmd_blocks = new_cmds;
77 m_max_blocks += block_pool;
78 }
79 m_coord_blocks[nb] =
80 FX_Alloc( float, block_size * 2 +
81 block_size /
82 (sizeof(float) / sizeof(unsigned char)));
83 m_cmd_blocks[nb] =
84 (unsigned char*)(m_coord_blocks[nb] + block_size * 2);
85 m_total_blocks++;
86 }
rewind(unsigned path_id)87 void path_storage::rewind(unsigned path_id)
88 {
89 m_iterator = path_id;
90 }
curve4(float x_ctrl1,float y_ctrl1,float x_ctrl2,float y_ctrl2,float x_to,float y_to)91 void path_storage::curve4(float x_ctrl1, float y_ctrl1,
92 float x_ctrl2, float y_ctrl2,
93 float x_to, float y_to)
94 {
95 add_vertex(x_ctrl1, y_ctrl1, path_cmd_curve4);
96 add_vertex(x_ctrl2, y_ctrl2, path_cmd_curve4);
97 add_vertex(x_to, y_to, path_cmd_curve4);
98 }
end_poly()99 void path_storage::end_poly()
100 {
101 if(m_total_vertices) {
102 if(is_vertex(command(m_total_vertices - 1))) {
103 add_vertex(0, 0, unsigned{path_cmd_end_poly} | path_flags_close);
104 }
105 }
106 }
107 }
108 } // namespace pdfium
109