1 /**************************************************************************/
2 /*                                                                        */
3 /*       Copyright (c) Microsoft Corporation. All rights reserved.        */
4 /*                                                                        */
5 /*       This software is licensed under the Microsoft Software License   */
6 /*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
7 /*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
8 /*       and in the root directory of this software.                      */
9 /*                                                                        */
10 /**************************************************************************/
11 
12 
13 /**************************************************************************/
14 /**************************************************************************/
15 /**                                                                       */
16 /** GUIX Component                                                        */
17 /**                                                                       */
18 /**   Line Chart Management (Line Chart)                                  */
19 /**                                                                       */
20 /**************************************************************************/
21 
22 #define GX_SOURCE_CODE
23 
24 
25 /* Include necessary system files.  */
26 
27 #include "gx_api.h"
28 #include "gx_window.h"
29 #include "gx_line_chart.h"
30 
31 
32 /**************************************************************************/
33 /*                                                                        */
34 /*  FUNCTION                                               RELEASE        */
35 /*                                                                        */
36 /*    _gx_line_chart_y_scale_calculate                    PORTABLE C      */
37 /*                                                           6.1          */
38 /*  AUTHOR                                                                */
39 /*                                                                        */
40 /*    Kenneth Maxwell, Microsoft Corporation                              */
41 /*                                                                        */
42 /*  DESCRIPTION                                                           */
43 /*                                                                        */
44 /*    This function calculates chart y axis scale value                   */
45 /*                                                                        */
46 /*  INPUT                                                                 */
47 /*                                                                        */
48 /*    chart                                 Line chart                    */
49 /*    return_value                          location to pass return value */
50 /*                                                                        */
51 /*  OUTPUT                                                                */
52 /*                                                                        */
53 /*    Completion Status                                                   */
54 /*                                                                        */
55 /*  CALLS                                                                 */
56 /*                                                                        */
57 /*    none                                                                */
58 /*                                                                        */
59 /*  CALLED BY                                                             */
60 /*                                                                        */
61 /*    Application Code                                                    */
62 /*                                                                        */
63 /*  RELEASE HISTORY                                                       */
64 /*                                                                        */
65 /*    DATE              NAME                      DESCRIPTION             */
66 /*                                                                        */
67 /*  05-19-2020     Kenneth Maxwell          Initial Version 6.0           */
68 /*  09-30-2020     Kenneth Maxwell          Modified comment(s),          */
69 /*                                            resulting in version 6.1    */
70 /*                                                                        */
71 /**************************************************************************/
_gx_line_chart_y_scale_calculate(GX_LINE_CHART * chart,INT * return_value)72 UINT _gx_line_chart_y_scale_calculate(GX_LINE_CHART *chart, INT *return_value)
73 {
74 INT y_scale;
75 GX_LINE_CHART_INFO *chart_info;
76 
77     chart_info = &chart -> gx_line_chart_info;
78 
79     y_scale = chart -> gx_widget_size.gx_rectangle_bottom - chart -> gx_widget_size.gx_rectangle_top + 1;
80     y_scale -= chart_info -> gx_line_chart_top_margin + chart_info -> gx_line_chart_bottom_margin;
81     y_scale -= chart_info -> gx_line_chart_axis_line_width;
82 
83     y_scale = GX_FIXED_VAL_MAKE(y_scale);
84 
85     if (chart_info -> gx_line_chart_max_val != chart_info -> gx_line_chart_min_val)
86     {
87         y_scale /= (chart_info -> gx_line_chart_max_val - chart_info -> gx_line_chart_min_val);
88     }
89     *return_value = y_scale;
90     return GX_SUCCESS;
91 }
92 
93 
94 
95 
96 
97