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1 /*
2  * Copyright 2014 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 // EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL
9 // DO NOT USE -- FOR INTERNAL TESTING ONLY
10 
11 #ifndef sk_paint_DEFINED
12 #define sk_paint_DEFINED
13 
14 #include "sk_types.h"
15 
16 SK_C_PLUS_PLUS_BEGIN_GUARD
17 
18 /**
19     Create a new paint with default settings:
20         antialias : false
21         stroke : false
22         stroke width : 0.0f (hairline)
23         stroke miter : 4.0f
24         stroke cap : BUTT_SK_STROKE_CAP
25         stroke join : MITER_SK_STROKE_JOIN
26         color : opaque black
27         shader : NULL
28         maskfilter : NULL
29         xfermode_mode : SRCOVER_SK_XFERMODE_MODE
30 */
31 SK_API sk_paint_t* sk_paint_new(void);
32 /**
33     Release the memory storing the sk_paint_t and unref() all
34     associated objects.
35 */
36 SK_API void sk_paint_delete(sk_paint_t*);
37 
38 /**
39     Return true iff the paint has antialiasing enabled.
40 */
41 SK_API bool sk_paint_is_antialias(const sk_paint_t*);
42 /**
43     Set to true to enable antialiasing, false to disable it on this
44     sk_paint_t.
45 */
46 SK_API void sk_paint_set_antialias(sk_paint_t*, bool);
47 
48 /**
49     Return the paint's curent drawing color.
50 */
51 SK_API sk_color_t sk_paint_get_color(const sk_paint_t*);
52 /**
53     Set the paint's curent drawing color.
54 */
55 SK_API void sk_paint_set_color(sk_paint_t*, sk_color_t);
56 
57 /* stroke settings */
58 
59 /**
60     Return true iff stroking is enabled rather than filling on this
61     sk_paint_t.
62 */
63 SK_API bool sk_paint_is_stroke(const sk_paint_t*);
64 /**
65     Set to true to enable stroking rather than filling with this
66     sk_paint_t.
67 */
68 SK_API void sk_paint_set_stroke(sk_paint_t*, bool);
69 
70 /**
71     Return the width for stroking.  A value of 0 strokes in hairline mode.
72  */
73 SK_API float sk_paint_get_stroke_width(const sk_paint_t*);
74 /**
75    Set the width for stroking.  A value of 0 strokes in hairline mode
76    (always draw 1-pixel wide, regardless of the matrix).
77  */
78 SK_API void sk_paint_set_stroke_width(sk_paint_t*, float width);
79 
80 /**
81     Return the paint's stroke miter value. This is used to control the
82     behavior of miter joins when the joins angle is sharp.
83 */
84 SK_API float sk_paint_get_stroke_miter(const sk_paint_t*);
85 /**
86    Set the paint's stroke miter value. This is used to control the
87    behavior of miter joins when the joins angle is sharp. This value
88    must be >= 0.
89 */
90 SK_API void sk_paint_set_stroke_miter(sk_paint_t*, float miter);
91 
92 typedef enum {
93     BUTT_SK_STROKE_CAP,
94     ROUND_SK_STROKE_CAP,
95     SQUARE_SK_STROKE_CAP
96 } sk_stroke_cap_t;
97 
98 /**
99     Return the paint's stroke cap type, controlling how the start and
100     end of stroked lines and paths are treated.
101 */
102 SK_API sk_stroke_cap_t sk_paint_get_stroke_cap(const sk_paint_t*);
103 /**
104     Set the paint's stroke cap type, controlling how the start and
105     end of stroked lines and paths are treated.
106 */
107 SK_API void sk_paint_set_stroke_cap(sk_paint_t*, sk_stroke_cap_t);
108 
109 typedef enum {
110     MITER_SK_STROKE_JOIN,
111     ROUND_SK_STROKE_JOIN,
112     BEVEL_SK_STROKE_JOIN
113 } sk_stroke_join_t;
114 
115 /**
116     Return the paint's stroke join type, specifies the treatment that
117     is applied to corners in paths and rectangles
118  */
119 SK_API sk_stroke_join_t sk_paint_get_stroke_join(const sk_paint_t*);
120 /**
121     Set the paint's stroke join type, specifies the treatment that
122     is applied to corners in paths and rectangles
123  */
124 SK_API void sk_paint_set_stroke_join(sk_paint_t*, sk_stroke_join_t);
125 
126 /**
127  *  Set the paint's shader to the specified parameter. This will automatically call unref() on
128  *  any previous value, and call ref() on the new value.
129  */
130 SK_API void sk_paint_set_shader(sk_paint_t*, sk_shader_t*);
131 
132 /**
133  *  Set the paint's maskfilter to the specified parameter. This will automatically call unref() on
134  *  any previous value, and call ref() on the new value.
135  */
136 SK_API void sk_paint_set_maskfilter(sk_paint_t*, sk_maskfilter_t*);
137 
138 /**
139  *  Set the paint's xfermode to the specified parameter.
140  */
141 SK_API void sk_paint_set_xfermode_mode(sk_paint_t*, sk_xfermode_mode_t);
142 
143 SK_C_PLUS_PLUS_END_GUARD
144 
145 #endif
146