1/**************************************************************************
2 *
3 * Copyright 2009 VMware, Inc.  All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 **************************************************************************/
26
27#ifndef STROKER_H
28#define STROKER_H
29
30#include "VG/openvg.h"
31#include "api_consts.h"
32
33struct path;
34struct vg_state;
35struct array;
36
37struct stroker {
38   void (*begin)(struct stroker *stroker);
39   void (*process_subpath)(struct stroker *stroker);
40   void (*end)(struct stroker *stroker);
41
42   struct array *segments;
43   struct array *control_points;
44   struct path *path;
45
46   VGfloat back1_x, back1_y;
47   VGfloat back2_x, back2_y;
48
49   VGfloat     stroke_width;
50   VGfloat     miter_limit;
51   VGCapStyle  cap_style;
52   VGJoinStyle join_style;
53
54   VGPathCommand last_cmd;
55};
56
57struct dash_stroker {
58   struct stroker base;
59
60   struct stroker stroker;
61
62   VGfloat dash_pattern[VEGA_MAX_DASH_COUNT];
63   VGint dash_pattern_num;
64   VGfloat dash_phase;
65   VGboolean dash_phase_reset;
66};
67
68void stroker_init(struct stroker *stroker,
69                  struct vg_state *state);
70void dash_stroker_init(struct stroker *stroker,
71                       struct vg_state *state);
72void dash_stroker_cleanup(struct dash_stroker *stroker);
73void stroker_cleanup(struct stroker *stroker);
74
75void stroker_begin(struct stroker *stroker);
76void stroker_move_to(struct stroker *stroker, VGfloat x, VGfloat y);
77void stroker_line_to(struct stroker *stroker, VGfloat x, VGfloat y);
78void stroker_curve_to(struct stroker *stroker, VGfloat px1, VGfloat py1,
79                      VGfloat px2, VGfloat py2,
80                      VGfloat x, VGfloat y);
81void stroker_end(struct stroker *stroker);
82
83void stroker_emit_move_to(struct stroker *stroker, VGfloat x, VGfloat y);
84void stroker_emit_line_to(struct stroker *stroker, VGfloat x, VGfloat y);
85void stroker_emit_curve_to(struct stroker *stroker, VGfloat px1, VGfloat py1,
86                           VGfloat px2, VGfloat py2,
87                           VGfloat x, VGfloat y);
88
89#endif
90