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 /** Radial Slider Management (Slider) */
18 /** */
19 /**************************************************************************/
20
21 #define GX_SOURCE_CODE
22
23
24 /* Include necessary system files. */
25
26 #include "gx_api.h"
27 #include "gx_widget.h"
28 #include "gx_utility.h"
29 #include "gx_radial_slider.h"
30
31 /**************************************************************************/
32 /* */
33 /* FUNCTION RELEASE */
34 /* */
35 /* _gx_radial_slider_needle_rectangle_calculate PORTABLE C */
36 /* 6.1.10 */
37 /* AUTHOR */
38 /* */
39 /* Kenneth Maxwell, Microsoft Corporation */
40 /* */
41 /* DESCRIPTION */
42 /* */
43 /* This service calculates the bounding rectangle of the radial slider */
44 /* needle. */
45 /* */
46 /* INPUT */
47 /* */
48 /* slider Radial slider control block */
49 /* rectangle Rectangle to be retrieved */
50 /* */
51 /* OUTPUT */
52 /* */
53 /* status Completion status */
54 /* */
55 /* CALLS */
56 /* */
57 /* _gx_widget_pixelmap_get Retrieve pixelmap with */
58 /* specified resource id */
59 /* _gx_utility_rectangle_define Define a rectangle */
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 /* 01-31-2022 Ting Zhu Modified comment(s), */
73 /* supported needle offset, */
74 /* resulting in version 6.1.10 */
75 /* */
76 /**************************************************************************/
_gx_radial_slider_needle_rectangle_calculate(GX_RADIAL_SLIDER * slider,GX_RECTANGLE * rectangle)77 UINT _gx_radial_slider_needle_rectangle_calculate(GX_RADIAL_SLIDER *slider, GX_RECTANGLE *rectangle)
78 {
79 GX_PIXELMAP *map;
80 GX_RADIAL_SLIDER_INFO *info = &slider -> gx_radial_slider_info;
81 INT xpos;
82 INT ypos;
83
84 _gx_widget_pixelmap_get((GX_WIDGET *)slider, info -> gx_radial_slider_info_needle_pixelmap, &map);
85
86 if (map)
87 {
88 xpos = _gx_utility_math_cos(GX_FIXED_VAL_MAKE(info -> gx_radial_slider_info_current_angle));
89 ypos = _gx_utility_math_sin(GX_FIXED_VAL_MAKE(info -> gx_radial_slider_info_current_angle));
90
91 /* calculate sin and cos value of current angle value. */
92 xpos = GX_FIXED_VAL_RND((info -> gx_radial_slider_info_radius + info -> gx_radial_slider_info_needle_offset) * xpos);
93 ypos = GX_FIXED_VAL_RND((info -> gx_radial_slider_info_radius + info -> gx_radial_slider_info_needle_offset) * ypos);
94
95 /* calculate needle position. */
96 xpos += info -> gx_radial_slider_info_xcenter;
97 ypos = info -> gx_radial_slider_info_ycenter - ypos;
98
99 xpos -= map -> gx_pixelmap_width >> 1;
100 ypos -= map -> gx_pixelmap_height >> 1;
101
102 xpos += slider -> gx_widget_size.gx_rectangle_left;
103 ypos += slider -> gx_widget_size.gx_rectangle_top;
104
105 /* define needle rectangle. */
106 _gx_utility_rectangle_define(rectangle, (GX_VALUE)xpos, (GX_VALUE)ypos,
107 (GX_VALUE)(xpos + map -> gx_pixelmap_width),
108 (GX_VALUE)(ypos + map -> gx_pixelmap_height));
109 }
110 else
111 {
112 _gx_utility_rectangle_define(rectangle, 0, 0, 0, 0);
113 }
114
115 return GX_SUCCESS;
116 }
117
118
