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