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 /** Drop List (List) */
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_system.h"
30 #include "gx_drop_list.h"
31 #include "gx_window.h"
32
33 /**************************************************************************/
34 /* */
35 /* FUNCTION RELEASE */
36 /* */
37 /* _gx_drop_list_create PORTABLE C */
38 /* 6.1 */
39 /* AUTHOR */
40 /* */
41 /* Kenneth Maxwell, Microsoft Corporation */
42 /* */
43 /* DESCRIPTION */
44 /* */
45 /* This service creates a drop list. */
46 /* */
47 /* INPUT */
48 /* */
49 /* drop_list Drop list control block */
50 /* name Name of drop list */
51 /* parent Pointer to parent widget */
52 /* total_rows Total number of rows in */
53 /* drop list */
54 /* open_height Height of the vertical list */
55 /* callback function called to create */
56 /* new widgets when the list */
57 /* is scrolled. */
58 /* style Style of drop list */
59 /* drop_list_id Application-defined ID of */
60 /* the drop list */
61 /* size Dimensions of the drop list */
62 /* */
63 /* OUTPUT */
64 /* */
65 /* status Completion status */
66 /* */
67 /* CALLS */
68 /* */
69 /* _gx_widget_create Create the underlying widget */
70 /* memset Clear the memory block */
71 /* _gx_vertical_list_create Create the underlying */
72 /* vertical list */
73 /* _gx_widget_link Link the widget to its parent */
74 /* */
75 /* CALLED BY */
76 /* */
77 /* Application Code */
78 /* */
79 /* RELEASE HISTORY */
80 /* */
81 /* DATE NAME DESCRIPTION */
82 /* */
83 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
84 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
85 /* resulting in version 6.1 */
86 /* */
87 /**************************************************************************/
_gx_drop_list_create(GX_DROP_LIST * drop_list,GX_CONST GX_CHAR * name,GX_WIDGET * parent,INT total_rows,INT open_height,VOID (* callback)(GX_VERTICAL_LIST *,GX_WIDGET *,INT),ULONG style,USHORT drop_list_id,GX_CONST GX_RECTANGLE * size)88 UINT _gx_drop_list_create(GX_DROP_LIST *drop_list, GX_CONST GX_CHAR *name,
89 GX_WIDGET *parent, INT total_rows, INT open_height,
90 VOID (*callback)(GX_VERTICAL_LIST *, GX_WIDGET *, INT),
91 ULONG style, USHORT drop_list_id,
92 GX_CONST GX_RECTANGLE *size)
93 {
94 GX_VERTICAL_LIST *list;
95
96 /* the drop list should not have enabled style */
97 style &= ~GX_STYLE_ENABLED;
98
99 /* Call the widget create function. */
100 _gx_widget_create((GX_WIDGET *)drop_list, name, GX_NULL, style, drop_list_id, size);
101
102 drop_list -> gx_widget_type = GX_TYPE_DROP_LIST;
103 drop_list -> gx_widget_event_process_function = (UINT (*)(GX_WIDGET *, GX_EVENT *))_gx_drop_list_event_process;
104 drop_list -> gx_drop_list_open_height = open_height;
105 drop_list -> gx_drop_list_pixelmap = 0;
106 drop_list -> gx_drop_list_popup_open = GX_FALSE;
107 drop_list -> gx_widget_draw_function = (VOID (*)(GX_WIDGET *))_gx_drop_list_draw;
108 drop_list -> gx_widget_event_process_function = (UINT (*)(GX_WIDGET *, GX_EVENT *))_gx_drop_list_event_process;
109 drop_list -> gx_widget_disabled_fill_color = drop_list -> gx_widget_normal_fill_color;
110
111 /* create the drop-down list, which is a modified vertical list */
112 list = &drop_list -> gx_drop_list_popup.gx_popup_list_list;
113
114 _gx_vertical_list_create(list, name, GX_NULL, total_rows, callback, style, drop_list_id, size);
115 list -> gx_widget_type = GX_TYPE_POPUP_LIST;
116 list -> gx_widget_event_process_function = (UINT (*)(GX_WIDGET *, GX_EVENT *))_gx_popup_list_event_process;
117 drop_list -> gx_drop_list_popup.gx_popup_list_owner = (GX_WIDGET *)drop_list;
118
119 /* Determine if a parent widget was provided. */
120 if (parent)
121 {
122 _gx_widget_link(parent, (GX_WIDGET *)drop_list);
123 }
124
125 /* Return completion status. */
126 return(GX_SUCCESS);
127 }
128
129
