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 /** Slider Management (Slider) */
18 /** */
19 /**************************************************************************/
20
21 #define GX_SOURCE_CODE
22
23 /* Include necessary system files. */
24
25 #include "gx_api.h"
26 #include "gx_system.h"
27 #include "gx_display.h"
28 #include "gx_context.h"
29 #include "gx_widget.h"
30 #include "gx_utility.h"
31 #include "gx_slider.h"
32
33
34
35 /**************************************************************************/
36 /* */
37 /* FUNCTION RELEASE */
38 /* */
39 /* _gx_slider_value_set PORTABLE C */
40 /* 6.1 */
41 /* AUTHOR */
42 /* */
43 /* Kenneth Maxwell, Microsoft Corporation */
44 /* */
45 /* DESCRIPTION */
46 /* */
47 /* This service sets the slider value. */
48 /* */
49 /* */
50 /* INPUT */
51 /* */
52 /* slider Slider widget control block */
53 /* info Pointer to slider info */
54 /* new_value New slider value */
55 /* */
56 /* OUTPUT */
57 /* */
58 /* status Completion status */
59 /* */
60 /* CALLS */
61 /* */
62 /* _gx_slider_needle_position_get Get the slider needle */
63 /* position */
64 /* _gx_utility_rectangle_combine Combine the first and second */
65 /* rectangle into the first */
66 /* rectangle */
67 /* _gx_system_dirty_partial_add Mark the partial area of this */
68 /* widget as dirty */
69 /* _gx_widget_event_generate Generate an event and send it */
70 /* to the parent widget */
71 /* */
72 /* CALLED BY */
73 /* */
74 /* Application Code */
75 /* GUIX Internal Code */
76 /* */
77 /* RELEASE HISTORY */
78 /* */
79 /* DATE NAME DESCRIPTION */
80 /* */
81 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
82 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
83 /* resulting in version 6.1 */
84 /* */
85 /**************************************************************************/
_gx_slider_value_set(GX_SLIDER * slider,GX_SLIDER_INFO * info,INT new_value)86 UINT _gx_slider_value_set(GX_SLIDER *slider, GX_SLIDER_INFO *info, INT new_value)
87 {
88 GX_RECTANGLE oldpos;
89 GX_RECTANGLE newpos;
90
91 if (new_value != info -> gx_slider_info_current_val)
92 {
93 /* get the old need position */
94 _gx_slider_needle_position_get(slider, info, &oldpos);
95
96 /* assign slider value */
97 info -> gx_slider_info_current_val = new_value;
98
99 /* get the new needle position */
100
101 _gx_slider_needle_position_get(slider, info, &newpos);
102
103 /* combine old and new needle positions */
104 _gx_utility_rectangle_combine(&newpos, &oldpos);
105
106 if (slider -> gx_widget_type == GX_TYPE_PIXELMAP_SLIDER)
107 {
108 newpos.gx_rectangle_left = slider -> gx_widget_size.gx_rectangle_left;
109 newpos.gx_rectangle_right = slider -> gx_widget_size.gx_rectangle_right;
110 }
111
112 /* mark as dirty so that I get redrawn */
113 _gx_system_dirty_partial_add((GX_WIDGET *)slider, &newpos);
114
115 /* notify my parent of my new value */
116 _gx_widget_event_generate((GX_WIDGET *)slider, GX_EVENT_SLIDER_VALUE, new_value);
117 }
118 return(GX_SUCCESS);
119 }
120
121
