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 /** Widget Management (Widget) */
18 /** */
19 /**************************************************************************/
20
21 #define GX_SOURCE_CODE
22
23
24 /* Include necessary system files. */
25
26 #include "gx_api.h"
27 #include "gx_system.h"
28 #include "gx_widget.h"
29 #include "gx_utility.h"
30
31
32 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _gx_widget_create PORTABLE C */
37 /* 6.1 */
38 /* AUTHOR */
39 /* */
40 /* Kenneth Maxwell, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This function creates a widget. */
45 /* */
46 /* INPUT */
47 /* */
48 /* widget Widget control block */
49 /* name Name of widget */
50 /* parent Parent widget control block */
51 /* style Style of widget */
52 /* Id Application-defined ID of the */
53 /* the widget */
54 /* size Widget size */
55 /* */
56 /* OUTPUT */
57 /* */
58 /* status Completion status */
59 /* */
60 /* CALLS */
61 /* */
62 /* _gx_system_lock Lock access to GUIX */
63 /* _gx_widget_link Link a widget to parent */
64 /* _gx_system_unlock Release the protection */
65 /* */
66 /* CALLED BY */
67 /* */
68 /* Application Code */
69 /* GUIX Internal Code */
70 /* */
71 /* RELEASE HISTORY */
72 /* */
73 /* DATE NAME DESCRIPTION */
74 /* */
75 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
76 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
77 /* resulting in version 6.1 */
78 /* */
79 /**************************************************************************/
_gx_widget_create(GX_WIDGET * widget,GX_CONST GX_CHAR * name,GX_WIDGET * parent,ULONG style,USHORT Id,GX_CONST GX_RECTANGLE * size)80 UINT _gx_widget_create(GX_WIDGET *widget, GX_CONST GX_CHAR *name, GX_WIDGET *parent,
81 ULONG style, USHORT Id, GX_CONST GX_RECTANGLE *size)
82 {
83
84 /* lock access to GUIX */
85 GX_ENTER_CRITICAL
86
87 /* Setup the widget. */
88 widget -> gx_widget_type = GX_TYPE_WIDGET;
89
90 widget -> gx_widget_style = style;
91 widget -> gx_widget_size = *size;
92 widget -> gx_widget_clip = widget -> gx_widget_size;
93 widget -> gx_widget_event_process_function = _gx_widget_event_process;
94 widget -> gx_widget_draw_function = (VOID (*)(GX_WIDGET *))_gx_widget_draw;
95 widget -> gx_widget_normal_fill_color = GX_COLOR_ID_WIDGET_FILL;
96 widget -> gx_widget_selected_fill_color = GX_COLOR_ID_SELECTED_FILL;
97 widget -> gx_widget_disabled_fill_color = GX_COLOR_ID_DISABLED_FILL;
98 widget -> gx_widget_id = Id;
99
100 #if defined(GX_BRUSH_ALPHA_SUPPORT)
101 widget -> gx_widget_alpha = 0xff;
102 #endif
103
104 if (style & GX_STYLE_DYNAMICALLY_ALLOCATED)
105 {
106 widget -> gx_widget_status = GX_STATUS_DYNAMICALLY_ALLOCATED;
107 }
108 else
109 {
110 widget -> gx_widget_status = 0;
111 }
112
113 if (widget -> gx_widget_style & GX_STYLE_ENABLED)
114 {
115 widget -> gx_widget_status |= (GX_STATUS_ACCEPTS_FOCUS | GX_STATUS_SELECTABLE);
116 }
117
118 if (style & GX_STYLE_TRANSPARENT)
119 {
120 widget -> gx_widget_status |= GX_STATUS_TRANSPARENT;
121 }
122
123 /* setup linked list */
124 widget -> gx_widget_parent = GX_NULL;
125 widget -> gx_widget_first_child = GX_NULL;
126 widget -> gx_widget_last_child = GX_NULL;
127 widget -> gx_widget_next = GX_NULL;
128 widget -> gx_widget_previous = GX_NULL;
129 widget -> gx_widget_nav_next = GX_NULL;
130 widget -> gx_widget_nav_previous = GX_NULL;
131
132 /* Save the widget name. */
133 widget -> gx_widget_name = name;
134
135 /* Determine if a parent widget was provided. */
136 if (parent)
137 {
138 _gx_widget_link(parent, widget);
139 }
140
141 /* Release the protection. */
142 GX_EXIT_CRITICAL
143
144 /* Return successful status. */
145 return(GX_SUCCESS);
146 }
147
148
