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 /**   Window Management (Window)                                          */
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 
30 
31 /**************************************************************************/
32 /*                                                                        */
33 /*  FUNCTION                                               RELEASE        */
34 /*                                                                        */
35 /*    _gx_window_view_update_detect                       PORTABLE C      */
36 /*                                                           6.1          */
37 /*  AUTHOR                                                                */
38 /*                                                                        */
39 /*    Kenneth Maxwell, Microsoft Corporation                              */
40 /*                                                                        */
41 /*  DESCRIPTION                                                           */
42 /*                                                                        */
43 /*    This function is called when a window is moved or changes in a way  */
44 /*    that causes viewports to be invalid. Check to see if this window is */
45 /*    a child of the root window, and if so mark the root as needing an   */
46 /*    update.                                                             */
47 /*                                                                        */
48 /*  INPUT                                                                 */
49 /*                                                                        */
50 /*    window                                Window's widget control block */
51 /*                                                                        */
52 /*  OUTPUT                                                                */
53 /*                                                                        */
54 /*    status                                Completion status             */
55 /*                                                                        */
56 /*  CALLS                                                                 */
57 /*                                                                        */
58 /*    none                                                                */
59 /*                                                                        */
60 /*  CALLED BY                                                             */
61 /*                                                                        */
62 /*    Application Code                                                    */
63 /*    GUIX Internal Code                                                  */
64 /*                                                                        */
65 /*  RELEASE HISTORY                                                       */
66 /*                                                                        */
67 /*    DATE              NAME                      DESCRIPTION             */
68 /*                                                                        */
69 /*  05-19-2020     Kenneth Maxwell          Initial Version 6.0           */
70 /*  09-30-2020     Kenneth Maxwell          Modified comment(s),          */
71 /*                                            resulting in version 6.1    */
72 /*                                                                        */
73 /**************************************************************************/
_gx_window_view_update_detect(GX_WINDOW * window)74 VOID _gx_window_view_update_detect(GX_WINDOW *window)
75 {
76 GX_WINDOW_ROOT *root;
77 GX_WIDGET      *parent;
78 
79     /* pick up a pointer to the parent of this widget */
80 
81     if (window -> gx_widget_type >= GX_TYPE_WINDOW)
82     {
83         parent = window -> gx_widget_parent;
84 
85         if (parent)
86         {
87             /* is my parent a GX_ROOT_WINDOW type? */
88             if (parent -> gx_widget_type == GX_TYPE_ROOT_WINDOW)
89             {
90                 root = (GX_WINDOW_ROOT *)parent;
91                 root -> gx_window_root_views_changed = GX_TRUE;
92             }
93         }
94         else
95         {
96             if (window -> gx_widget_type == GX_TYPE_ROOT_WINDOW)
97             {
98                 root = (GX_WINDOW_ROOT *)window;
99                 root -> gx_window_root_views_changed = GX_TRUE;
100             }
101         }
102     }
103 }
104 
105