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 /** Tree View Management (View) */
19 /** */
20 /**************************************************************************/
21
22 #define GX_SOURCE_CODE
23
24
25 /* Include necessary system files. */
26
27 #include "gx_api.h"
28 #include "gx_menu.h"
29 #include "gx_widget.h"
30 #include "gx_system.h"
31 #include "gx_tree_view.h"
32 #include "gx_window.h"
33 #include "gx_scrollbar.h"
34
35 /**************************************************************************/
36 /* */
37 /* FUNCTION RELEASE */
38 /* */
39 /* _gx_tree_view_position PORTABLE C */
40 /* 6.1 */
41 /* AUTHOR */
42 /* */
43 /* Kenneth Maxwell, Microsoft Corporation */
44 /* */
45 /* DESCRIPTION */
46 /* */
47 /* This function positions a tree menu. */
48 /* */
49 /* INPUT */
50 /* */
51 /* tree Tree view control block */
52 /* */
53 /* OUTPUT */
54 /* */
55 /* status Completion status */
56 /* */
57 /* CALLS */
58 /* */
59 /* _gx_widget_first_client_child_get Get the first client child */
60 /* _gx_widget_next_client_child_get Get the next client child */
61 /* _gx_widget_height_get Get widget height */
62 /* _gx_widget_width_get Get widget width */
63 /* _gx_widget_resize Resize a widget */
64 /* _gx_menu_position Position a menu widget */
65 /* _gx_window_scrollbar_find Find scrollbar for a window */
66 /* _gx_scrollbar_reset Reset scrollbar information */
67 /* _gx_widget_hide Hide a widget */
68 /* _gx_widget_show Show a widget */
69 /* */
70 /* CALLED BY */
71 /* */
72 /* Application Code */
73 /* GUIX Internal Code */
74 /* */
75 /* RELEASE HISTORY */
76 /* */
77 /* DATE NAME DESCRIPTION */
78 /* */
79 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
80 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
81 /* resulting in version 6.1 */
82 /* */
83 /**************************************************************************/
_gx_tree_view_position(GX_TREE_VIEW * tree)84 UINT _gx_tree_view_position(GX_TREE_VIEW *tree)
85 {
86 GX_WIDGET *child;
87 GX_RECTANGLE size;
88 GX_RECTANGLE *client;
89 GX_VALUE height;
90 GX_VALUE width;
91 GX_VALUE bottom;
92 GX_VALUE max_right = 0;
93 GX_MENU_LIST *list;
94 GX_SCROLLBAR *scroll;
95
96 client = &tree -> gx_window_client;
97
98 size.gx_rectangle_left = (GX_VALUE)(client -> gx_rectangle_left + tree -> gx_tree_view_indentation + tree -> gx_tree_view_x_shift);
99 bottom = (GX_VALUE)(client -> gx_rectangle_top - 1 + tree -> gx_tree_view_y_shift);
100
101 child = _gx_widget_first_client_child_get((GX_WIDGET *)tree);
102
103 /* Reposition tree view items. */
104 while (child)
105 {
106 if (child -> gx_widget_type == GX_TYPE_MENU_LIST)
107 {
108 child = _gx_widget_next_client_child_get(child);
109 continue;
110 }
111
112 _gx_widget_height_get(child, &height);
113 _gx_widget_width_get(child, &width);
114 size.gx_rectangle_top = (GX_VALUE)(bottom + 1);
115 size.gx_rectangle_bottom = (GX_VALUE)(size.gx_rectangle_top + height - 1);
116 size.gx_rectangle_right = (GX_VALUE)(size.gx_rectangle_left + width - 1);
117
118 _gx_widget_resize((GX_WIDGET *)child, &size);
119
120 if (child -> gx_widget_type == GX_TYPE_MENU)
121 {
122 _gx_menu_position((GX_MENU *)child, tree -> gx_tree_view_indentation);
123
124 list = &((GX_MENU *)child) -> gx_menu_list;
125
126 if (list -> gx_widget_parent && list -> gx_widget_first_child)
127 {
128 bottom = list -> gx_widget_size.gx_rectangle_bottom;
129
130 if (list -> gx_widget_size.gx_rectangle_right > max_right)
131 {
132 max_right = list -> gx_widget_size.gx_rectangle_right;
133 }
134 }
135 else
136 {
137 if (list -> gx_widget_parent)
138 {
139 _gx_widget_detach((GX_WIDGET *)list);
140 }
141
142 bottom = size.gx_rectangle_bottom;
143
144 if (size.gx_rectangle_right > max_right)
145 {
146 max_right = size.gx_rectangle_right;
147 }
148 }
149 }
150 else
151 {
152 bottom = size.gx_rectangle_bottom;
153 }
154
155 child -> gx_widget_status &= (ULONG)(~GX_STATUS_ACCEPTS_FOCUS);
156 child = _gx_widget_next_client_child_get(child);
157 }
158
159 tree -> gx_tree_view_tree_width = (GX_VALUE)(max_right - (client -> gx_rectangle_left + tree -> gx_tree_view_x_shift) + 1);
160 tree -> gx_tree_view_tree_height = (GX_VALUE)(bottom - (client -> gx_rectangle_top + tree -> gx_tree_view_y_shift) + 1);
161
162 _gx_window_scrollbar_find((GX_WINDOW *)tree, (USHORT)GX_TYPE_HORIZONTAL_SCROLL, &scroll);
163
164 width = (GX_VALUE)(client -> gx_rectangle_right - client -> gx_rectangle_left + 1);
165 height = (GX_VALUE)(client -> gx_rectangle_bottom - client -> gx_rectangle_top + 1);
166
167 if (scroll)
168 {
169 _gx_scrollbar_reset(scroll, GX_NULL);
170
171 if (tree -> gx_tree_view_tree_width <= width)
172 {
173 _gx_widget_hide((GX_WIDGET *)scroll);
174 }
175 else
176 {
177 _gx_widget_show((GX_WIDGET *)scroll);
178 }
179 }
180
181 _gx_window_scrollbar_find((GX_WINDOW *)tree, GX_TYPE_VERTICAL_SCROLL, &scroll);
182
183 if (scroll)
184 {
185 _gx_scrollbar_reset(scroll, GX_NULL);
186
187 if (tree -> gx_tree_view_tree_height <= height)
188 {
189 _gx_widget_hide((GX_WIDGET *)scroll);
190 }
191 else
192 {
193 _gx_widget_show((GX_WIDGET *)scroll);
194 }
195 }
196
197 if ((tree -> gx_widget_style & GX_STYLE_TREE_VIEW_SHOW_ROOT_LINES) &&
198 (tree -> gx_widget_status & GX_STATUS_VISIBLE))
199 {
200 _gx_system_dirty_mark((GX_WIDGET *)tree);
201 }
202
203 /* Return completion status code. */
204 return(GX_SUCCESS);
205 }
206
207
