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Diffstat (limited to 'src/sparkline.h')
| -rw-r--r-- | src/sparkline.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/sparkline.h b/src/sparkline.h new file mode 100644 index 0000000..6025d2b --- /dev/null +++ b/src/sparkline.h @@ -0,0 +1,56 @@ +/* sparkline.h -- ASCII Sparklines header file + * + * --------------------------------------------------------------------------- + * + * Copyright(C) 2011-2014 Salvatore Sanfilippo <antirez@gmail.com> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __SPARKLINE_H +#define __SPARKLINE_H + +/* A sequence is represented of many "samples" */ +struct sample { + double value; + char *label; +}; + +struct sequence { + int length; + int labels; + struct sample *samples; + double min, max; +}; + +#define SPARKLINE_NO_FLAGS 0 +#define SPARKLINE_FILL 1 /* Fill the area under the curve. */ +#define SPARKLINE_LOG_SCALE 2 /* Use logarithmic scale. */ + +struct sequence *createSparklineSequence(void); +void sparklineSequenceAddSample(struct sequence *seq, double value, char *label); +void freeSparklineSequence(struct sequence *seq); +sds sparklineRenderRange(sds output, struct sequence *seq, int rows, int offset, int len, int flags); +sds sparklineRender(sds output, struct sequence *seq, int columns, int rows, int flags); + +#endif /* __SPARKLINE_H */ |