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 /** Horizontal List (List) */
18 /** */
19 /**************************************************************************/
20
21 #define GX_SOURCE_CODE
22
23
24 /* Include necessary system files. */
25
26 #include "gx_api.h"
27 #include "gx_widget.h"
28 #include "gx_window.h"
29 #include "gx_system.h"
30 #include "gx_utility.h"
31
32 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _gx_horizontal_list_right_wrap PORTABLE C */
37 /* 6.1 */
38 /* AUTHOR */
39 /* */
40 /* Kenneth Maxwell, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This function scrolls down the horizontal list. */
45 /* */
46 /* INPUT */
47 /* */
48 /* list horizontal list widget control*/
49 /* block */
50 /* */
51 /* OUTPUT */
52 /* */
53 /* None */
54 /* */
55 /* CALLS */
56 /* */
57 /* _gx_last_client_child_get Get the last client child */
58 /* _gx_first_client_child_get Get the first client child */
59 /* _gx_widget_back_attach Attach a widget to the back */
60 /* _gx_widget_shift Relocate a widget */
61 /* [gx_horizontal_list_callback] Horizontal list callback */
62 /* */
63 /* CALLED BY */
64 /* */
65 /* _gx_horizontal_list_scroll */
66 /* */
67 /* RELEASE HISTORY */
68 /* */
69 /* DATE NAME DESCRIPTION */
70 /* */
71 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
72 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
73 /* resulting in version 6.1 */
74 /* */
75 /**************************************************************************/
_gx_horizontal_list_right_wrap(GX_HORIZONTAL_LIST * list)76 VOID _gx_horizontal_list_right_wrap(GX_HORIZONTAL_LIST *list)
77 {
78 GX_WIDGET *test;
79 GX_WIDGET *check;
80 GX_BOOL moving = GX_TRUE;
81 GX_RECTANGLE newpos;
82
83 while (moving)
84 {
85 moving = GX_FALSE;
86
87 if ((list -> gx_horizontal_list_top_index > 0) ||
88 (list -> gx_widget_style & GX_STYLE_WRAP))
89 {
90 /* scrolling down, see if my bottom widget can be moved to the top: */
91 test = _gx_widget_last_client_child_get((GX_WIDGET *)list);
92
93 if (test)
94 {
95 if (test -> gx_widget_size.gx_rectangle_left > list -> gx_widget_size.gx_rectangle_right)
96 {
97 /* right widget is to the right of my client area, move it to the top: */
98 moving = GX_TRUE;
99 list -> gx_horizontal_list_top_index--;
100
101 /* Wrap index. */
102 if (list -> gx_horizontal_list_top_index < 0)
103 {
104 list -> gx_horizontal_list_top_index = list -> gx_horizontal_list_total_columns - 1;
105 }
106
107 check = _gx_widget_first_client_child_get((GX_WIDGET *)list);
108
109 if (check)
110 {
111 _gx_widget_detach(test);
112 newpos = test -> gx_widget_size;
113 _gx_utility_rectangle_shift(&newpos,
114 (GX_VALUE)(-(newpos.gx_rectangle_right -
115 check -> gx_widget_size.gx_rectangle_left + 1)), 0);
116 _gx_widget_resize(test, &newpos);
117
118 list -> gx_horizontal_list_callback(list, test, list -> gx_horizontal_list_top_index);
119 if (list -> gx_horizontal_list_selected == list -> gx_horizontal_list_top_index)
120 {
121 test -> gx_widget_style |= GX_STYLE_DRAW_SELECTED;
122 }
123 else
124 {
125 test -> gx_widget_style &= ~GX_STYLE_DRAW_SELECTED;
126 }
127 _gx_widget_back_attach((GX_WIDGET *)list, test);
128 }
129 else
130 {
131 break;
132 }
133 }
134 }
135 }
136 }
137 }
138
139
