1 /***************************************************************************
2 * Copyright (c) 2024 Microsoft Corporation
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the MIT License which is available at
6 * https://opensource.org/licenses/MIT.
7 *
8 * SPDX-License-Identifier: MIT
9 **************************************************************************/
10
11
12 /**************************************************************************/
13 /**************************************************************************/
14 /** */
15 /** GUIX Component */
16 /** */
17 /** Numeric Scroll Wheel Management (Scroll Wheel) */
18 /** */
19 /**************************************************************************/
20
21 #define GX_SOURCE_CODE
22
23
24 /* Include necessary system files. */
25
26 #include "gx_api.h"
27 #include "gx_scroll_wheel.h"
28 #include "gx_utility.h"
29
30 /**************************************************************************/
31 /* */
32 /* FUNCTION RELEASE */
33 /* */
34 /* _gx_numeric_scroll_wheel_text_get PORTABLE C */
35 /* 6.1 */
36 /* AUTHOR */
37 /* */
38 /* Kenneth Maxwell, Microsoft Corporation */
39 /* */
40 /* DESCRIPTION */
41 /* */
42 /* This function returns pointer to numeric text. */
43 /* */
44 /* INPUT */
45 /* */
46 /* wheel Scroll wheel control block */
47 /* row Desired text row */
48 /* */
49 /* OUTPUT */
50 /* */
51 /* status Completion status */
52 /* */
53 /* CALLS */
54 /* */
55 /* _gx_utility_ltoa Convert integer to string */
56 /* */
57 /* CALLED BY */
58 /* */
59 /* _gx_text_scroll_wheel_draw */
60 /* */
61 /* RELEASE HISTORY */
62 /* */
63 /* DATE NAME DESCRIPTION */
64 /* */
65 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
66 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
67 /* resulting in version 6.1 */
68 /* */
69 /**************************************************************************/
_gx_numeric_scroll_wheel_text_get(GX_NUMERIC_SCROLL_WHEEL * wheel,INT row,GX_STRING * string)70 UINT _gx_numeric_scroll_wheel_text_get(GX_NUMERIC_SCROLL_WHEEL *wheel, INT row, GX_STRING *string)
71 {
72 INT step;
73 INT val;
74
75 if (row < wheel -> gx_scroll_wheel_total_rows)
76 {
77 step = wheel -> gx_numeric_scroll_wheel_end_val - wheel -> gx_numeric_scroll_wheel_start_val;
78
79 if (step == (wheel -> gx_scroll_wheel_total_rows - 1))
80 {
81 step = 1;
82 }
83 else if (step == (1 - wheel -> gx_scroll_wheel_total_rows))
84 {
85 step = -1;
86 }
87 else if (wheel -> gx_scroll_wheel_total_rows > 1)
88 {
89 step /= (wheel -> gx_scroll_wheel_total_rows - 1);
90 }
91
92 val = wheel -> gx_numeric_scroll_wheel_start_val + (step * row);
93 _gx_utility_ltoa(val, wheel -> gx_numeric_scroll_wheel_string_buffer, GX_NUMERIC_SCROLL_WHEEL_STRING_BUFFER_SIZE);
94
95 string -> gx_string_ptr = wheel -> gx_numeric_scroll_wheel_string_buffer;
96 _gx_utility_string_length_check(string -> gx_string_ptr, &string -> gx_string_length, GX_NUMERIC_SCROLL_WHEEL_STRING_BUFFER_SIZE - 1);
97 }
98 else
99 {
100 string -> gx_string_ptr = GX_NULL;
101 string -> gx_string_length = 0;
102 }
103
104 return(GX_SUCCESS);
105 }
106
107
