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 /** Display Management (Display) */
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_display.h"
30
31
32 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _gx_display_driver_generic_pie_fill PORTABLE C */
37 /* 6.1 */
38 /* AUTHOR */
39 /* */
40 /* Kenneth Maxwell, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* Display driver to fill a pie. */
45 /* */
46 /* INPUT */
47 /* */
48 /* context Drawing context */
49 /* xcenter x-coord of center of circle */
50 /* ycenter y-coord of center of circle */
51 /* r Radius of circle */
52 /* start_angle The start angle of circle arc */
53 /* end_angle The end angle of circle arc */
54 /* */
55 /* OUTPUT */
56 /* */
57 /* None */
58 /* */
59 /* CALLS */
60 /* */
61 /* _gx_display_driver_generic_simple_pie_fill */
62 /* Real display driver draw */
63 /* filled-pie function */
64 /* */
65 /* CALLED BY */
66 /* */
67 /* _gx_canvas_pie_draw */
68 /* */
69 /* RELEASE HISTORY */
70 /* */
71 /* DATE NAME DESCRIPTION */
72 /* */
73 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
74 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
75 /* resulting in version 6.1 */
76 /* */
77 /**************************************************************************/
78 #if defined(GX_ARC_DRAWING_SUPPORT)
79
_gx_display_driver_generic_pie_fill(GX_DRAW_CONTEXT * context,INT xcenter,INT ycenter,UINT r,INT start_angle,INT end_angle)80 VOID _gx_display_driver_generic_pie_fill(GX_DRAW_CONTEXT *context, INT xcenter, INT ycenter, UINT r, INT start_angle, INT end_angle)
81 {
82 /* The function fills a pie.*/
83
84
85 if (start_angle < 180)
86 {
87 if (end_angle < 180)
88 {
89 _gx_display_driver_generic_simple_pie_fill(context, xcenter, ycenter, r, start_angle, end_angle, GX_FALSE);
90 }
91 else if (end_angle < 360)
92 {
93 /* Skip-end parameter should only be set when drawing the above area.
94 It would be set to GX_TRUE to skip the bottom line to avoid case that this line will be drawn twice, which
95 is not correct, when brush alpha is set. */
96 _gx_display_driver_generic_simple_pie_fill(context, xcenter, ycenter, r, start_angle, 180, GX_TRUE);
97 _gx_display_driver_generic_simple_pie_fill(context, xcenter, ycenter, r, 180, end_angle, GX_FALSE);
98 }
99 else
100 {
101 _gx_display_driver_generic_simple_pie_fill(context, xcenter, ycenter, r, start_angle, 180, GX_TRUE);
102 _gx_display_driver_generic_simple_pie_fill(context, xcenter, ycenter, r, 180, 360, GX_FALSE);
103 _gx_display_driver_generic_simple_pie_fill(context, xcenter, ycenter, r, 0, end_angle - 360, GX_TRUE);
104 }
105 }
106 else
107 {
108 if (end_angle < 360)
109 {
110 _gx_display_driver_generic_simple_pie_fill(context, xcenter, ycenter, r, start_angle, end_angle, GX_FALSE);
111 }
112 else if (end_angle < 540)
113 {
114 _gx_display_driver_generic_simple_pie_fill(context, xcenter, ycenter, r, start_angle, 360, GX_FALSE);
115 _gx_display_driver_generic_simple_pie_fill(context, xcenter, ycenter, r, 0, end_angle - 360, GX_TRUE);
116 }
117 else
118 {
119 _gx_display_driver_generic_simple_pie_fill(context, xcenter, ycenter, r, start_angle, 360, GX_FALSE);
120 _gx_display_driver_generic_simple_pie_fill(context, xcenter, ycenter, r, 0, 180, GX_TRUE);
121 _gx_display_driver_generic_simple_pie_fill(context, xcenter, ycenter, r, 180, end_angle - 360, GX_FALSE);
122 }
123 }
124 }
125
126 #endif
127
128
