overlay/chart.h

   1 /*
   2  * Copyright © 2013 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  */
  24
  25 #ifndef CHART_H
  26 #define CHART_H
  27
  28 struct chart {
  29         const char *name;
  30         int x, y, w, h;
  31         int num_samples;
  32         int current_sample;
  33         int range_automatic;
  34         enum chart_mode {
  35                 CHART_STROKE = 0,
  36                 CHART_FILL,
  37                 CHART_FILL_STROKE,
  38         } mode;
  39         enum chart_smooth {
  40                 CHART_LINE = 0,
  41                 CHART_CURVE,
  42         } smooth;
  43         float fill_rgb[4];
  44         float stroke_rgb[4];
  45         double stroke_width;
  46         double range[2];
  47         double *samples;
  48 };
  49
  50 int chart_init(struct chart *chart, const char *name, int num_samples);
  51 void chart_set_mode(struct chart *chart, enum chart_mode mode);
  52 void chart_set_smooth(struct chart *chart, enum chart_smooth smooth);
  53 void chart_set_fill_rgba(struct chart *chart, float red, float green, float blue, float alpha);
  54 void chart_set_stroke_width(struct chart *chart, float width);
  55 void chart_set_stroke_rgba(struct chart *chart, float red, float green, float blue, float alpha);
  56 void chart_set_position(struct chart *chart, int x, int y);
  57 void chart_set_size(struct chart *chart, int w, int h);
  58 void chart_set_range(struct chart *chart, double min, double max);
  59 void chart_add_sample(struct chart *chart, double value);
  60 void chart_draw(struct chart *chart, cairo_t *cr);
  61 void chart_fini(struct chart *chart);
  62
  63 void chart_get_range(struct chart *chart, double *range);
  64
  65 #endif /* CHART_H */