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bertos/gfx/charts.h

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+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2004 Develer S.r.l. (http://www.develer.com/)
+ * Copyright 1999, 2000, 2001, 2003 Bernie Innocenti <bernie@codewiz.org>
+ *
+ * -->
+ *
+ * \defgroup chart Chart graphical routines
+ * \ingroup graphics
+ * \{
+ * \brief Simple charts on top of mware/gfx routines (interface).
+ *
+ * Configuration:
+ *  - \c CONFIG_CHART_TYPE_X: type for the input dataset of X-coordinates
+ *  - \c CONFIG_CHART_TYPE_Y: type for the input dataset of Y-coordinates
+ *
+ * Sample usage:
+ *
+ * \code
+ *	bm = chart_init(0, ymax, N_POINTS_CURVE, ymin);
+ *
+ *	chart_drawCurve(bm, curve_y, curve_points + 1);
+ *	gfx_setViewRect(bm, xmin, ymax, xmax, ymin);
+ *	chart_drawDots(bm, samples_x, samples_y, samples_cnt);
+ *
+ *	print_bitmap(bm);
+ * \endcode
+ * \author Bernie Innocenti <bernie@codewiz.org>
+ */
+
+#ifndef GFX_CHARTS_H
+#define GFX_CHARTS_H
+
+#include "cfg/cfg_gfx.h" /* CONFIG_ stuff */
+
+#include <gfx/gfx.h>   /* vcoord_t */
+
+/**
+ * \name Width/height of the small ticks drawn over the axes
+ * \{
+ */
+#define TICKS_HEIGHT     2
+#define TICKS_WIDTH      2
+/*\}*/
+
+/**
+ * \name Chart frame dimensions
+ * \{
+ */
+#define CHART_BORDERTOP       0
+#define CHART_BORDERBOTTOM    0
+#define CHART_BORDERLEFT      0
+#define CHART_BORDERRIGHT     0
+/*\}*/
+
+#ifndef CONFIG_CHART_TYPE_X
+#define CONFIG_CHART_TYPE_X vcoord_t
+#endif
+#ifndef CONFIG_CHART_TYPE_Y
+#define CONFIG_CHART_TYPE_Y vcoord_t
+#endif
+
+
+typedef CONFIG_CHART_TYPE_X chart_x_t;
+typedef CONFIG_CHART_TYPE_Y chart_y_t;
+
+
+/* Public function protos */
+void chart_init(Bitmap *bm, coord_t xmin, coord_t ymin, coord_t xmax, coord_t ymax);
+void chart_setScale(Bitmap *bm, chart_x_t xmin, chart_y_t ymin, chart_x_t xmax, chart_y_t ymax);
+void chart_drawAxis(Bitmap *bm);
+void chart_drawCurve(Bitmap *bm, const chart_y_t *curve_y, int curve_cnt);
+void chart_drawDots(Bitmap *bm, const chart_x_t *dots_x, const chart_y_t *dots_y, int cnt);
+
+/** \} */ //defgroup charts
+#endif /* GFX_CHARTS_H */