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