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 /**   Context Management (Context)                                        */
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_display.h"
29 #include "gx_context.h"
30 
31 /* Bring in externs for caller checking code.  */
32 GX_CALLER_CHECKING_EXTERNS
33 
34 /**************************************************************************/
35 /*                                                                        */
36 /*  FUNCTION                                               RELEASE        */
37 /*                                                                        */
38 /*    _gxe_context_string_get                             PORTABLE C      */
39 /*                                                           6.1          */
40 /*  AUTHOR                                                                */
41 /*                                                                        */
42 /*    Kenneth Maxwell, Microsoft Corporation                              */
43 /*                                                                        */
44 /*  DESCRIPTION                                                           */
45 /*                                                                        */
46 /*    This function checks for errors in context pixelmap set call.       */
47 /*                                                                        */
48 /*  INPUT                                                                 */
49 /*                                                                        */
50 /*    pixelmap_id                           Pixelmap resource ID          */
51 /*    return_pixelmap                       Pointer to pixelmap           */
52 /*                                            destination pointer         */
53 /*                                                                        */
54 /*  OUTPUT                                                                */
55 /*                                                                        */
56 /*    status                                Completion status             */
57 /*                                                                        */
58 /*  CALLS                                                                 */
59 /*                                                                        */
60 /*    _gx_context_pixelmap_get              Actual context pixelmap get   */
61 /*                                            call                        */
62 /*                                                                        */
63 /*  CALLED BY                                                             */
64 /*                                                                        */
65 /*    Application Code                                                    */
66 /*    GUIX default draw funtions                                          */
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 /**************************************************************************/
77 #if defined(GX_ENABLE_DEPRECATED_STRING_API)
_gxe_context_string_get(GX_RESOURCE_ID string_id,GX_CONST GX_CHAR ** return_string)78 UINT _gxe_context_string_get(GX_RESOURCE_ID string_id, GX_CONST GX_CHAR **return_string)
79 {
80 UINT status;
81 
82     /* Check for appropriate caller.  */
83     GX_INIT_AND_THREADS_CALLER_CHECKING
84 
85     /* Check for invalid pointer.  */
86     if (return_string == GX_NULL)
87     {
88         return(GX_PTR_ERROR);
89     }
90 
91     if (_gx_system_current_draw_context == GX_NULL)
92     {
93         *return_string = GX_NULL;
94         return GX_INVALID_CONTEXT;
95     }
96 
97     /* Call actual string.  */
98     status = _gx_context_string_get(string_id, return_string);
99 
100     /* Return status.  */
101     return(status);
102 }
103 #endif
104 
105 /**************************************************************************/
106 /*                                                                        */
107 /*  FUNCTION                                               RELEASE        */
108 /*                                                                        */
109 /*    _gxe_context_string_get_ext                         PORTABLE C      */
110 /*                                                           6.1          */
111 /*  AUTHOR                                                                */
112 /*                                                                        */
113 /*    Kenneth Maxwell, Microsoft Corporation                              */
114 /*                                                                        */
115 /*  DESCRIPTION                                                           */
116 /*                                                                        */
117 /*    This function checks for errors in context pixelmap set call.       */
118 /*                                                                        */
119 /*  INPUT                                                                 */
120 /*                                                                        */
121 /*    pixelmap_id                           Pixelmap resource ID          */
122 /*    return_pixelmap                       Pointer to pixelmap           */
123 /*                                            destination pointer         */
124 /*                                                                        */
125 /*  OUTPUT                                                                */
126 /*                                                                        */
127 /*    status                                Completion status             */
128 /*                                                                        */
129 /*  CALLS                                                                 */
130 /*                                                                        */
131 /*    _gx_context_pixelmap_get              Actual context pixelmap get   */
132 /*                                            call                        */
133 /*                                                                        */
134 /*  CALLED BY                                                             */
135 /*                                                                        */
136 /*    Application Code                                                    */
137 /*    GUIX default draw funtions                                          */
138 /*                                                                        */
139 /*  RELEASE HISTORY                                                       */
140 /*                                                                        */
141 /*    DATE              NAME                      DESCRIPTION             */
142 /*                                                                        */
143 /*  05-19-2020     Kenneth Maxwell          Initial Version 6.0           */
144 /*  09-30-2020     Kenneth Maxwell          Modified comment(s),          */
145 /*                                            resulting in version 6.1    */
146 /*                                                                        */
147 /**************************************************************************/
_gxe_context_string_get_ext(GX_RESOURCE_ID string_id,GX_STRING * return_string)148 UINT _gxe_context_string_get_ext(GX_RESOURCE_ID string_id, GX_STRING *return_string)
149 {
150 UINT status;
151 
152     /* Check for appropriate caller.  */
153     GX_INIT_AND_THREADS_CALLER_CHECKING
154 
155     /* Check for invalid pointer.  */
156     if (return_string == GX_NULL)
157     {
158         return(GX_PTR_ERROR);
159     }
160 
161     if (_gx_system_current_draw_context == GX_NULL)
162     {
163         return_string -> gx_string_ptr = GX_NULL;
164         return_string -> gx_string_length = 0;
165         return GX_INVALID_CONTEXT;
166     }
167 
168     /* Call actual string.  */
169     status = _gx_context_string_get_ext(string_id, return_string);
170 
171     /* Return status.  */
172     return(status);
173 }
174 
175