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 /** Multi Line Text Input Management (Multi Line Text Input) */
18 /** */
19 /**************************************************************************/
20
21 #define GX_SOURCE_CODE
22
23
24 /* Include necessary system files. */
25
26 #include "gx_api.h"
27 #include "gx_multi_line_text_input.h"
28 #include "gx_utility.h"
29 #include "gx_window.h"
30 #include "gx_system.h"
31 #include "gx_multi_line_text_view.h"
32
33 /**************************************************************************/
34 /* */
35 /* FUNCTION RELEASE */
36 /* */
37 /* _gx_multi_line_text_input_keydown_process PORTABLE C */
38 /* 6.1 */
39 /* AUTHOR */
40 /* */
41 /* Kenneth Maxwell, Microsoft Corporation */
42 /* */
43 /* DESCRIPTION */
44 /* */
45 /* This function processes events for the specified text input widget. */
46 /* */
47 /* INPUT */
48 /* */
49 /* input Multi line text input */
50 /* control block */
51 /* event_ptr Incoming event to process */
52 /* */
53 /* OUTPUT */
54 /* */
55 /* None */
56 /* */
57 /* CALLS */
58 /* */
59 /* _gx_multi_line_text_input_backspace Process the backspace key */
60 /* _gx_multi_line_text_input_delete Process the delete key */
61 /* _gx_multi_line_text_input_left_arrow Process the left arrow key */
62 /* _gx_multi_line_text_input_right_arrow Process the right arrow key */
63 /* _gx_multi_line_text_input_up_arrow Process the up arrow key */
64 /* _gx_multi_line_text_input_down_arrow Process the down arrow key */
65 /* _gx_multi_line_text_input_char_insert */
66 /* Insert a character */
67 /* _gx_multi_line_text_input_home Process the HOME key */
68 /* _gx_multi_line_text_input_end Process the END key */
69 /* _gx_utility_unicode_to_utf8 Parse a unicode to utf8 string*/
70 /* _gx_window_event_process Default window event process */
71 /* */
72 /* CALLED BY */
73 /* */
74 /* _gx_multi_line_text_input_event_process */
75 /* */
76 /* RELEASE HISTORY */
77 /* */
78 /* DATE NAME DESCRIPTION */
79 /* */
80 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
81 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
82 /* resulting in version 6.1 */
83 /* */
84 /**************************************************************************/
_gx_multi_line_text_input_keydown_process(GX_MULTI_LINE_TEXT_INPUT * input,GX_EVENT * event_ptr)85 UINT _gx_multi_line_text_input_keydown_process(GX_MULTI_LINE_TEXT_INPUT *input, GX_EVENT *event_ptr)
86 {
87 UINT status;
88 USHORT key_value;
89 GX_UBYTE utf8_str[10];
90 GX_STRING string;
91
92 switch (event_ptr -> gx_event_payload.gx_event_ushortdata[0])
93 {
94 case GX_KEY_BACKSPACE:
95 status = _gx_multi_line_text_input_backspace(input);
96 break;
97
98 case GX_KEY_DELETE:
99 status = _gx_multi_line_text_input_delete(input);
100 break;
101
102 case GX_KEY_LEFT_ARROW:
103 status = _gx_multi_line_text_input_left_arrow(input);
104 break;
105
106 case GX_KEY_RIGHT_ARROW:
107 status = _gx_multi_line_text_input_right_arrow(input);
108 break;
109
110 case GX_KEY_UP_ARROW:
111 status = _gx_multi_line_text_input_up_arrow(input);
112 break;
113
114 case GX_KEY_DOWN_ARROW:
115 status = _gx_multi_line_text_input_down_arrow(input);
116 break;
117
118 case GX_KEY_CARRIAGE_RETURN:
119 case GX_KEY_LINE_FEED:
120 utf8_str[0] = (GX_UBYTE)event_ptr -> gx_event_payload.gx_event_ushortdata[0];
121 string.gx_string_ptr = (GX_CHAR *)utf8_str;
122 string.gx_string_length = 1;
123 status = _gx_multi_line_text_input_char_insert_ext(input, &string);
124 break;
125
126 case GX_KEY_SPACE:
127 utf8_str[0] = ' ';
128 string.gx_string_ptr = (GX_CHAR *)utf8_str;
129 string.gx_string_length = 1;
130 status = _gx_multi_line_text_input_char_insert_ext(input, &string);
131 break;
132
133 case GX_KEY_HOME:
134 status = _gx_multi_line_text_input_home(input);
135 break;
136
137 case GX_KEY_END:
138 status = _gx_multi_line_text_input_end(input);
139 break;
140
141 default:
142 key_value = event_ptr -> gx_event_payload.gx_event_ushortdata[0];
143
144 if ((key_value <= 0x1f) ||
145 ((key_value >= 0x1b01) && key_value <= 0x1b14))
146 {
147 return _gx_window_event_process((GX_WINDOW *)input, event_ptr);
148 }
149
150 if (key_value <= 0x7e)
151 {
152 utf8_str[0] = (GX_UBYTE)key_value;
153 string.gx_string_ptr = (GX_CHAR *)utf8_str;
154 string.gx_string_length = 1;
155 status = _gx_multi_line_text_input_char_insert_ext(input, &string);
156 }
157 #ifdef GX_UTF8_SUPPORT
158 else
159 {
160
161 _gx_utility_unicode_to_utf8(key_value, utf8_str, &string.gx_string_length);
162
163 string.gx_string_ptr = (GX_CHAR *)utf8_str;
164
165 /* Insert a utf8 string to input buffer. */
166 status = _gx_multi_line_text_input_char_insert_ext(input, &string);
167 }
168 #endif
169 break;
170 }
171
172 return status;
173 }
174
175
