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 /** Canvas Management (Canvas) */
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_canvas.h"
29
30 /* Bring in externs for caller checking code. */
31 GX_CALLER_CHECKING_EXTERNS
32
33 /**************************************************************************/
34 /* */
35 /* FUNCTION RELEASE */
36 /* */
37 /* _gxe_canvas_line_draw PORTABLE C */
38 /* 6.1 */
39 /* AUTHOR */
40 /* */
41 /* Kenneth Maxwell, Microsoft Corporation */
42 /* */
43 /* DESCRIPTION */
44 /* */
45 /* This function checks errors in the canvas line draw function. */
46 /* */
47 /* INPUT */
48 /* */
49 /* x_start x-coord of endpoint1 */
50 /* y_start y-coord of endpoint1 */
51 /* x_end x-coord of endpoint2 */
52 /* y_end y-coord of endpoint2 */
53 /* */
54 /* OUTPUT */
55 /* */
56 /* status Completion status */
57 /* */
58 /* CALLS */
59 /* */
60 /* _gx_canvas_line_draw The actual function */
61 /* */
62 /* CALLED BY */
63 /* */
64 /* Application Code */
65 /* */
66 /* RELEASE HISTORY */
67 /* */
68 /* DATE NAME DESCRIPTION */
69 /* */
70 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
71 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
72 /* resulting in version 6.1 */
73 /* */
74 /**************************************************************************/
_gxe_canvas_line_draw(GX_VALUE x_start,GX_VALUE y_start,GX_VALUE x_end,GX_VALUE y_end)75 UINT _gxe_canvas_line_draw(GX_VALUE x_start, GX_VALUE y_start, GX_VALUE x_end, GX_VALUE y_end)
76 {
77 UINT status;
78 GX_DRAW_CONTEXT *context;
79
80 /* Check for appropriate caller. */
81 GX_INIT_AND_THREADS_CALLER_CHECKING
82
83 /* pick up the current drawing context */
84 context = _gx_system_current_draw_context;
85 if (context == GX_NULL)
86 {
87 return GX_INVALID_CONTEXT;
88 }
89
90 /* Call the actual function. */
91 status = _gx_canvas_line_draw(x_start, y_start, x_end, y_end);
92
93 /* Return successful completion. */
94 return(status);
95 }
96
97
