1 | /* sparkline.h -- ASCII Sparklines header file |
2 | * |
3 | * --------------------------------------------------------------------------- |
4 | * |
5 | * Copyright(C) 2011-2014 Salvatore Sanfilippo <[email protected]> |
6 | * All rights reserved. |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions are met: |
10 | * |
11 | * * Redistributions of source code must retain the above copyright notice, |
12 | * this list of conditions and the following disclaimer. |
13 | * * Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
21 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
22 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
23 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
24 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
25 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
26 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
27 | * POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
29 | |
30 | #ifndef __SPARKLINE_H |
31 | #define __SPARKLINE_H |
32 | |
33 | /* A sequence is represented of many "samples" */ |
34 | struct sample { |
35 | double value; |
36 | char *label; |
37 | }; |
38 | |
39 | struct sequence { |
40 | int length; |
41 | int labels; |
42 | struct sample *samples; |
43 | double min, max; |
44 | }; |
45 | |
46 | #define SPARKLINE_NO_FLAGS 0 |
47 | #define SPARKLINE_FILL 1 /* Fill the area under the curve. */ |
48 | #define SPARKLINE_LOG_SCALE 2 /* Use logarithmic scale. */ |
49 | |
50 | struct sequence *createSparklineSequence(void); |
51 | void sparklineSequenceAddSample(struct sequence *seq, double value, char *label); |
52 | void freeSparklineSequence(struct sequence *seq); |
53 | sds sparklineRenderRange(sds output, struct sequence *seq, int rows, int offset, int len, int flags); |
54 | sds sparklineRender(sds output, struct sequence *seq, int columns, int rows, int flags); |
55 | |
56 | #endif /* __SPARKLINE_H */ |
57 | |