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 /**   Vertical List (Lists)                                               */
19 /**                                                                       */
20 /**************************************************************************/
21 
22 #define GX_SOURCE_CODE
23 
24 
25 /* Include necessary system files.  */
26 
27 #include "gx_api.h"
28 #include "gx_widget.h"
29 #include "gx_window.h"
30 #include "gx_system.h"
31 #include "gx_scrollbar.h"
32 
33 /**************************************************************************/
34 /*                                                                        */
35 /*  FUNCTION                                               RELEASE        */
36 /*                                                                        */
37 /*    _gx_vertical_list_selected_widget_get               PORTABLE C      */
38 /*                                                           6.1          */
39 /*  AUTHOR                                                                */
40 /*                                                                        */
41 /*    Kenneth Maxwell, Microsoft Corporation                              */
42 /*                                                                        */
43 /*  DESCRIPTION                                                           */
44 /*                                                                        */
45 /*    This service gets the list entry at the current list index.         */
46 /*                                                                        */
47 /*  INPUT                                                                 */
48 /*                                                                        */
49 /*    vertical_list                         Vertical list widget control  */
50 /*                                          block                         */
51 /*    return_list_entry                     Destination for return list   */
52 /*                                          entry widget                  */
53 /*                                                                        */
54 /*  OUTPUT                                                                */
55 /*                                                                        */
56 /*    status                                Completion status             */
57 /*                                                                        */
58 /*  CALLS                                                                 */
59 /*                                                                        */
60 /*    None                                                                */
61 /*                                                                        */
62 /*  CALLED BY                                                             */
63 /*                                                                        */
64 /*    Application Code                                                    */
65 /*                                                                        */
66 /*  RELEASE HISTORY                                                       */
67 /*                                                                        */
68 /*    DATE              NAME                      DESCRIPTION             */
69 /*                                                                        */
70 /*  05-19-2020     Kenneth Maxwell          Initial Version 6.0           */
71 /*  09-30-2020     Kenneth Maxwell          Modified comment(s),          */
72 /*                                            resulting in version 6.1    */
73 /*                                                                        */
74 /**************************************************************************/
_gx_vertical_list_selected_widget_get(GX_VERTICAL_LIST * vertical_list,GX_WIDGET ** return_list_entry)75 UINT  _gx_vertical_list_selected_widget_get(GX_VERTICAL_LIST *vertical_list,
76                                             GX_WIDGET **return_list_entry)
77 {
78 INT        page_index;
79 GX_WIDGET *child = _gx_widget_first_client_child_get((GX_WIDGET *)vertical_list);
80 
81     if (vertical_list -> gx_vertical_list_selected < vertical_list -> gx_vertical_list_top_index)
82     {
83         page_index = vertical_list -> gx_vertical_list_total_rows - vertical_list -> gx_vertical_list_top_index;
84         page_index += vertical_list -> gx_vertical_list_selected;
85     }
86     else
87     {
88         page_index = vertical_list -> gx_vertical_list_selected - vertical_list -> gx_vertical_list_top_index;
89     }
90     while (child && page_index > 0)
91     {
92         child = _gx_widget_next_client_child_get(child);
93         page_index--;
94     }
95 
96     *return_list_entry = child;
97 
98     if (child)
99     {
100         return GX_SUCCESS;
101     }
102     return GX_FAILURE;
103 }
104 
105