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 /** System Management (System) */
18 /** */
19 /**************************************************************************/
20
21 #define GX_SOURCE_CODE
22
23
24 /* Include necessary system files. */
25
26 #include "gx_api.h"
27 #include "gx_system.h"
28 #include "gx_utility.h"
29 #include "gx_widget.h"
30
31
32 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _gx_system_root_view_add PORTABLE C */
37 /* 6.1 */
38 /* AUTHOR */
39 /* */
40 /* Kenneth Maxwell, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* Adds a view to a root window, checking to detect if the view is */
45 /* obscured by a child window */
46 /* */
47 /* INPUT */
48 /* */
49 /* root Root window that we want to */
50 /* add the view to. */
51 /* inrect Rectangle defining the view */
52 /* that we want to add. */
53 /* */
54 /* OUTPUT */
55 /* */
56 /* view is added to root window or split into smaller views. */
57 /* */
58 /* CALLS */
59 /* */
60 /* _gx_system_view_split Split a view */
61 /* _gx_system_view_add Add view to window */
62 /* _gx_utility_rectangle_overlap_detect Detect overlap of rectangles */
63 /* */
64 /* CALLED BY */
65 /* */
66 /* GUIX Internal Code */
67 /* */
68 /* RELEASE HISTORY */
69 /* */
70 /* DATE NAME DESCRIPTION */
71 /* */
72 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
73 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
74 /* resulting in version 6.1 */
75 /* */
76 /**************************************************************************/
_gx_system_root_view_add(GX_WINDOW_ROOT * root,GX_RECTANGLE * inrect)77 VOID _gx_system_root_view_add(GX_WINDOW_ROOT *root, GX_RECTANGLE *inrect)
78 {
79 GX_RECTANGLE overlap;
80 GX_WINDOW *win = GX_NULL;
81 GX_WIDGET *widget;
82
83 /* pick up pointer to frontmost child window */
84 widget = root -> gx_widget_last_child;
85
86 while (widget)
87 {
88 if (widget -> gx_widget_type >= GX_TYPE_WINDOW &&
89 (widget -> gx_widget_status & GX_STATUS_VISIBLE))
90 {
91 /* if this window is non-transparent, give it views */
92 if (!(widget -> gx_widget_status & GX_STATUS_TRANSPARENT))
93 {
94 win = (GX_WINDOW *)widget;
95 if (_gx_utility_rectangle_overlap_detect(inrect, &win -> gx_widget_size, &overlap))
96 {
97 /* split the viewport into pieces */
98 _gx_system_view_split(win, root, inrect);
99
100 /* add the overlap to the over window: */
101 _gx_system_view_add(win, &overlap);
102 return;
103 }
104 }
105 }
106 widget = widget -> gx_widget_previous;
107 }
108
109 /* if we didn't split the view, then add it here */
110 _gx_system_view_add((GX_WINDOW *)root, inrect);
111 }
112
113
