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 /**   String 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_system.h"
29 
30 /**************************************************************************/
31 /*                                                                        */
32 /*  FUNCTION                                               RELEASE        */
33 /*                                                                        */
34 /*    _gx_string_scroll_wheel_event_process               PORTABLE C      */
35 /*                                                           6.1          */
36 /*  AUTHOR                                                                */
37 /*                                                                        */
38 /*    Kenneth Maxwell, Microsoft Corporation                              */
39 /*                                                                        */
40 /*  DESCRIPTION                                                           */
41 /*                                                                        */
42 /*    This function processes the comming events for a string scroll      */
43 /*    wheel widget.                                                       */
44 /*                                                                        */
45 /*  INPUT                                                                 */
46 /*                                                                        */
47 /*    wheel                                 Text scroll wheel control     */
48 /*                                            block                       */
49 /*    event_ptr                             Event to be processed         */
50 /*                                                                        */
51 /*  OUTPUT                                                                */
52 /*                                                                        */
53 /*    status                                Completion status             */
54 /*                                                                        */
55 /*  CALLS                                                                 */
56 /*                                                                        */
57 /*    _gx_system_memory_free                Memory free function          */
58 /*    _gx_scroll_wheel_event_process        Default event process         */
59 /*  CALLED BY                                                             */
60 /*                                                                        */
61 /*    Application Code                                                    */
62 /*    GUIX Internal Code                                                  */
63 /*                                                                        */
64 /*  RELEASE HISTORY                                                       */
65 /*                                                                        */
66 /*    DATE              NAME                      DESCRIPTION             */
67 /*                                                                        */
68 /*  09-30-2020     Kenneth Maxwell          Initial Version 6.1           */
69 /*                                                                        */
70 /**************************************************************************/
_gx_string_scroll_wheel_event_process(GX_STRING_SCROLL_WHEEL * wheel,GX_EVENT * event_ptr)71 UINT _gx_string_scroll_wheel_event_process(GX_STRING_SCROLL_WHEEL *wheel, GX_EVENT *event_ptr)
72 {
73 
74     switch (event_ptr -> gx_event_type)
75     {
76     case GX_EVENT_DELETE:
77         if (wheel -> gx_widget_style & GX_STYLE_TEXT_COPY)
78         {
79             if (wheel -> gx_string_scroll_wheel_string_list)
80             {
81                 if (!_gx_system_memory_free)
82                 {
83                     return GX_SYSTEM_MEMORY_ERROR;
84                 }
85                 _gx_system_memory_free((void *)wheel -> gx_string_scroll_wheel_string_list);
86                 wheel -> gx_string_scroll_wheel_string_list = GX_NULL;
87             }
88 #if defined(GX_ENABLE_DEPRECATED_STRING_API)
89             if (wheel -> gx_string_scroll_wheel_string_list_deprecated)
90             {
91                 if (!_gx_system_memory_free)
92                 {
93                     return GX_SYSTEM_MEMORY_ERROR;
94                 }
95 
96                 _gx_system_memory_free((void *)wheel -> gx_string_scroll_wheel_string_list_deprecated);
97                 wheel -> gx_string_scroll_wheel_string_list_deprecated = GX_NULL;
98             }
99 #endif
100             wheel -> gx_string_scroll_wheel_string_list_buffer_size = 0;
101         }
102         break;
103 
104     default:
105         /* Do nothing. */
106         break;
107     }
108 
109     return _gx_text_scroll_wheel_event_process((GX_TEXT_SCROLL_WHEEL*)wheel, event_ptr);;
110 }
111 
112