1 /**************************************************************************/
2 /*                                                                        */
3 /*       Copyright (c) Microsoft Corporation. All rights reserved.        */
4 /*                                                                        */
5 /*       This software is licensed under the Microsoft Software License   */
6 /*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
7 /*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
8 /*       and in the root directory of this software.                      */
9 /*                                                                        */
10 /**************************************************************************/
11 
12 
13 /**************************************************************************/
14 /**************************************************************************/
15 /**                                                                       */
16 /** GUIX Component                                                        */
17 /**                                                                       */
18 /**   Canvas Management (Canvas)                                          */
19 /**                                                                       */
20 /**************************************************************************/
21 
22 #define GX_SOURCE_CODE
23 
24 
25 /* Include necessary system files.  */
26 
27 #include "gx_api.h"
28 #include "gx_system.h"
29 #include "gx_utility.h"
30 #include "gx_canvas.h"
31 
32 
33 /**************************************************************************/
34 /*                                                                        */
35 /*  FUNCTION                                               RELEASE        */
36 /*                                                                        */
37 /*    _gx_canvas_dirty_mark                               PORTABLE C      */
38 /*                                                           6.1          */
39 /*  AUTHOR                                                                */
40 /*                                                                        */
41 /*    Kenneth Maxwell, Microsoft Corporation                              */
42 /*                                                                        */
43 /*  DESCRIPTION                                                           */
44 /*                                                                        */
45 /*    This function marks the canvas dirty.                               */
46 /*                                                                        */
47 /*  INPUT                                                                 */
48 /*                                                                        */
49 /*    canvas                                Canvas control block          */
50 /*    area                                  Area of canvas to mark as     */
51 /*                                            dirty                       */
52 /*                                                                        */
53 /*  OUTPUT                                                                */
54 /*                                                                        */
55 /*    None                                                                */
56 /*                                                                        */
57 /*  CALLS                                                                 */
58 /*                                                                        */
59 /*    None                                                                */
60 /*                                                                        */
61 /*  CALLED BY                                                             */
62 /*                                                                        */
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_canvas_dirty_mark(GX_CANVAS * canvas,GX_RECTANGLE * area)74 VOID  _gx_canvas_dirty_mark(GX_CANVAS *canvas, GX_RECTANGLE *area)
75 {
76 
77     canvas -> gx_canvas_draw_count++;
78 
79     /* did the caller pass a specific rectangle? */
80     if (area)
81     {
82         /* yes, used passed in rectangle */
83         canvas -> gx_canvas_dirty_area = *area;
84     }
85     else
86     {
87         /* no, invalidate the entire canvas */
88         canvas -> gx_canvas_dirty_area.gx_rectangle_top = 0;
89         canvas -> gx_canvas_dirty_area.gx_rectangle_bottom =
90         (GX_VALUE)(canvas -> gx_canvas_y_resolution - 1);
91         canvas -> gx_canvas_dirty_area.gx_rectangle_left = 0;
92         canvas -> gx_canvas_dirty_area.gx_rectangle_right =
93         (GX_VALUE)(canvas -> gx_canvas_x_resolution - 1);
94     }
95 }
96 
97