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 /** Numeric Scroll Wheel Management (Scroll Wheel) */
19 /** */
20 /**************************************************************************/
21
22 #define GX_SOURCE_CODE
23
24
25 /* Include necessary system files. */
26
27 #include "gx_api.h"
28 #include "gx_scroll_wheel.h"
29 #include "gx_utility.h"
30
31 /**************************************************************************/
32 /* */
33 /* FUNCTION RELEASE */
34 /* */
35 /* _gx_numeric_scroll_wheel_text_get PORTABLE C */
36 /* 6.1 */
37 /* AUTHOR */
38 /* */
39 /* Kenneth Maxwell, Microsoft Corporation */
40 /* */
41 /* DESCRIPTION */
42 /* */
43 /* This function returns pointer to numeric text. */
44 /* */
45 /* INPUT */
46 /* */
47 /* wheel Scroll wheel control block */
48 /* row Desired text row */
49 /* */
50 /* OUTPUT */
51 /* */
52 /* status Completion status */
53 /* */
54 /* CALLS */
55 /* */
56 /* _gx_utility_ltoa Convert integer to string */
57 /* */
58 /* CALLED BY */
59 /* */
60 /* _gx_text_scroll_wheel_draw */
61 /* */
62 /* RELEASE HISTORY */
63 /* */
64 /* DATE NAME DESCRIPTION */
65 /* */
66 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
67 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
68 /* resulting in version 6.1 */
69 /* */
70 /**************************************************************************/
_gx_numeric_scroll_wheel_text_get(GX_NUMERIC_SCROLL_WHEEL * wheel,INT row,GX_STRING * string)71 UINT _gx_numeric_scroll_wheel_text_get(GX_NUMERIC_SCROLL_WHEEL *wheel, INT row, GX_STRING *string)
72 {
73 INT step;
74 INT val;
75
76 if (row < wheel -> gx_scroll_wheel_total_rows)
77 {
78 step = wheel -> gx_numeric_scroll_wheel_end_val - wheel -> gx_numeric_scroll_wheel_start_val;
79
80 if (step == (wheel -> gx_scroll_wheel_total_rows - 1))
81 {
82 step = 1;
83 }
84 else if (step == (1 - wheel -> gx_scroll_wheel_total_rows))
85 {
86 step = -1;
87 }
88 else if (wheel -> gx_scroll_wheel_total_rows > 1)
89 {
90 step /= (wheel -> gx_scroll_wheel_total_rows - 1);
91 }
92
93 val = wheel -> gx_numeric_scroll_wheel_start_val + (step * row);
94 _gx_utility_ltoa(val, wheel -> gx_numeric_scroll_wheel_string_buffer, GX_NUMERIC_SCROLL_WHEEL_STRING_BUFFER_SIZE);
95
96 string -> gx_string_ptr = wheel -> gx_numeric_scroll_wheel_string_buffer;
97 _gx_utility_string_length_check(string -> gx_string_ptr, &string -> gx_string_length, GX_NUMERIC_SCROLL_WHEEL_STRING_BUFFER_SIZE - 1);
98 }
99 else
100 {
101 string -> gx_string_ptr = GX_NULL;
102 string -> gx_string_length = 0;
103 }
104
105 return(GX_SUCCESS);
106 }
107
108
