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 View Management (Multi Line Text View) */
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_view.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_multi_line_text_view_event_process PORTABLE C */
37 /* 6.1 */
38 /* AUTHOR */
39 /* */
40 /* Kenneth Maxwell, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This service processes an event for a multi-line text view widget. */
45 /* */
46 /* INPUT */
47 /* */
48 /* text_view Multi-line text view widget */
49 /* control block */
50 /* event_ptr Point to event to process */
51 /* */
52 /* OUTPUT */
53 /* */
54 /* status Completion status */
55 /* */
56 /* CALLS */
57 /* */
58 /* _gx_multi_line_text_view_text_id_set Set new text id */
59 /* _gx_multi_line_text_view_scroll Scroll the text view window */
60 /* _gx_window_event_process Window event process */
61 /* */
62 /* CALLED BY */
63 /* */
64 /* Application Code */
65 /* */
66 /* RELEASE HISTORY */
67 /* */
68 /* DATE NAME DESCRIPTION */
69 /* */
70 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
71 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
72 /* added delete event handle, */
73 /* added logic to handle new */
74 /* events, */
75 /* resulting in version 6.1 */
76 /* */
77 /**************************************************************************/
78
_gx_multi_line_text_view_event_process(GX_MULTI_LINE_TEXT_VIEW * text_view,GX_EVENT * event_ptr)79 UINT _gx_multi_line_text_view_event_process(GX_MULTI_LINE_TEXT_VIEW *text_view, GX_EVENT *event_ptr)
80 {
81 switch (event_ptr -> gx_event_type)
82 {
83 case GX_EVENT_SHOW:
84 _gx_window_event_process((GX_WINDOW *)text_view, event_ptr);
85
86 /* If the text view text ID is specified.*/
87 if (text_view -> gx_multi_line_text_view_text_id)
88 {
89 _gx_multi_line_text_view_text_id_set(text_view, text_view -> gx_multi_line_text_view_text_id);
90 }
91
92 /* Get visible rows. */
93 _gx_multi_line_text_view_visible_rows_compute(text_view);
94 break;
95
96 case GX_EVENT_RESIZED:
97 if (text_view -> gx_widget_status & GX_STATUS_VISIBLE)
98 {
99 text_view -> gx_multi_line_text_view_line_index_old = GX_TRUE;
100
101 #if defined(GX_DYNAMIC_BIDI_TEXT_SUPPORT)
102 if (text_view -> gx_multi_line_text_view_bidi_resolved_text_info)
103 {
104 /* Widget size changed, clear reorderd bidi text so that it will be recreated when needed. */
105 _gx_utility_bidi_resolved_text_info_delete(&text_view -> gx_multi_line_text_view_bidi_resolved_text_info);
106 }
107 #endif
108 }
109 break;
110
111 case GX_EVENT_CLIENT_UPDATED:
112 if (text_view -> gx_widget_status & GX_STATUS_VISIBLE)
113 {
114 text_view -> gx_multi_line_text_view_line_index_old = GX_TRUE;
115 _gx_system_dirty_mark((GX_WIDGET *)text_view);
116 }
117 break;
118
119 case GX_EVENT_STYLE_CHANGED:
120 if (text_view -> gx_widget_status & GX_STATUS_VISIBLE)
121 {
122 if ((event_ptr -> gx_event_payload.gx_event_ulongdata & GX_STYLE_BORDER_MASK) !=
123 (text_view -> gx_widget_style & GX_STYLE_BORDER_MASK))
124 {
125 text_view -> gx_multi_line_text_view_line_index_old = GX_TRUE;
126 }
127 }
128 break;
129
130 case GX_EVENT_LANGUAGE_CHANGE:
131 if (text_view -> gx_multi_line_text_view_text_id)
132 {
133 _gx_multi_line_text_view_text_id_set(text_view, text_view -> gx_multi_line_text_view_text_id);
134 }
135 break;
136
137 #if defined(GX_DYNAMIC_BIDI_TEXT_SUPPORT)
138 case GX_EVENT_DYNAMIC_BIDI_TEXT_ENABLE:
139 case GX_EVENT_DYNAMIC_BIDI_TEXT_DISABLE:
140 text_view -> gx_multi_line_text_view_line_index_old = GX_TRUE;
141 break;
142 #endif
143
144 case GX_EVENT_DELETE:
145 if ((text_view -> gx_widget_style & GX_STYLE_TEXT_COPY) &&
146 text_view -> gx_multi_line_text_view_text.gx_string_ptr &&
147 text_view -> gx_multi_line_text_view_text_id == 0)
148 {
149 if (!_gx_system_memory_free)
150 {
151 return GX_SYSTEM_MEMORY_ERROR;
152 }
153 _gx_system_memory_free((void *)text_view -> gx_multi_line_text_view_text.gx_string_ptr);
154 text_view -> gx_multi_line_text_view_text.gx_string_ptr = GX_NULL;
155 text_view -> gx_multi_line_text_view_text.gx_string_length = 0;
156 }
157
158 #if defined(GX_DYNAMIC_BIDI_TEXT_SUPPORT)
159 if (text_view -> gx_multi_line_text_view_bidi_resolved_text_info)
160 {
161 _gx_utility_bidi_resolved_text_info_delete(&text_view -> gx_multi_line_text_view_bidi_resolved_text_info);
162 }
163 #endif
164 break;
165
166 case GX_EVENT_VERTICAL_SCROLL:
167 _gx_multi_line_text_view_scroll(text_view, (GX_VALUE)(event_ptr -> gx_event_payload.gx_event_intdata[1] - event_ptr -> gx_event_payload.gx_event_intdata[0]));
168 return 0;
169 }
170
171 return(_gx_window_event_process((GX_WINDOW *)text_view, event_ptr));
172 }
173
174
