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 
30 
31 /**************************************************************************/
32 /*                                                                        */
33 /*  FUNCTION                                               RELEASE        */
34 /*                                                                        */
35 /*    _gx_system_view_fold                                PORTABLE C      */
36 /*                                                           6.1          */
37 /*  AUTHOR                                                                */
38 /*                                                                        */
39 /*    Kenneth Maxwell, Microsoft Corporation                              */
40 /*                                                                        */
41 /*  DESCRIPTION                                                           */
42 /*                                                                        */
43 /*    This function combines adjcent views.                               */
44 /*                                                                        */
45 /*                                                                        */
46 /*  INPUT                                                                 */
47 /*                                                                        */
48 /*    win                                   Window to add view to         */
49 /*    view                                  Rectangle defining new view   */
50 /*                                                                        */
51 /*  OUTPUT                                                                */
52 /*                                                                        */
53 /*    GX_TRUE | GX_FALSE                                                  */
54 /*                                                                        */
55 /*  CALLS                                                                 */
56 /*                                                                        */
57 /*    None                                                                */
58 /*                                                                        */
59 /*  CALLED BY                                                             */
60 /*                                                                        */
61 /*    _gx_system_view_add                   Link a view to window's view  */
62 /*                                            list                        */
63 /*                                                                        */
64 /*  RELEASE HISTORY                                                       */
65 /*                                                                        */
66 /*    DATE              NAME                      DESCRIPTION             */
67 /*                                                                        */
68 /*  05-19-2020     Kenneth Maxwell          Initial Version 6.0           */
69 /*  09-30-2020     Kenneth Maxwell          Modified comment(s),          */
70 /*                                            resulting in version 6.1    */
71 /*                                                                        */
72 /**************************************************************************/
_gx_system_view_fold(GX_WINDOW * win,GX_RECTANGLE * view)73 GX_BOOL _gx_system_view_fold(GX_WINDOW *win, GX_RECTANGLE *view)
74 {
75 GX_VIEW *oldview = win -> gx_window_views;
76 
77     while (oldview)
78     {
79         /* check for two views stacked vertically:*/
80 
81         if ((oldview -> gx_view_rectangle.gx_rectangle_left == view -> gx_rectangle_left) &&
82             (oldview -> gx_view_rectangle.gx_rectangle_right == view -> gx_rectangle_right))
83         {
84             if (oldview -> gx_view_rectangle.gx_rectangle_bottom == (view -> gx_rectangle_top - 1))
85             {
86                 /* New view is right below existing view, expand bottom of
87                    existing: */
88                 oldview -> gx_view_rectangle.gx_rectangle_bottom = view -> gx_rectangle_bottom;
89                 return GX_TRUE;
90             }
91 
92             if (oldview -> gx_view_rectangle.gx_rectangle_top == (view -> gx_rectangle_bottom + 1))
93             {
94                 /* new view is right above existing view, just expand existing
95                    view top: */
96                 oldview -> gx_view_rectangle.gx_rectangle_top = view -> gx_rectangle_top;
97                 return GX_TRUE;
98             }
99         }
100         else
101         {
102             /* check for views right beside each other horizontally: */
103             if (oldview -> gx_view_rectangle.gx_rectangle_top == view -> gx_rectangle_top &&
104                 oldview -> gx_view_rectangle.gx_rectangle_bottom == view -> gx_rectangle_bottom)
105             {
106                 if (oldview -> gx_view_rectangle.gx_rectangle_right == (view -> gx_rectangle_left - 1))
107                 {
108                     /* new view is to the right of existing view, expand right side of
109                        existing:*/
110                     oldview -> gx_view_rectangle.gx_rectangle_right = view -> gx_rectangle_right;
111                     return GX_TRUE;
112                 }
113 
114                 if (oldview -> gx_view_rectangle.gx_rectangle_left == (view -> gx_rectangle_right + 1))
115                 {
116                     /* new view is to the left of existing view, expand left side of
117                        existing view: */
118                     oldview -> gx_view_rectangle.gx_rectangle_left = view -> gx_rectangle_left;
119                     return GX_TRUE;
120                 }
121             }
122         }
123         oldview = oldview -> gx_view_next;
124     }
125     return GX_FALSE;
126 }
127 
128