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 /** Slider Management (Slider) */
19 /** */
20 /**************************************************************************/
21
22 #define GX_SOURCE_CODE
23
24 /* Include necessary system files. */
25
26 #include "gx_api.h"
27 #include "gx_system.h"
28 #include "gx_display.h"
29 #include "gx_context.h"
30 #include "gx_widget.h"
31 #include "gx_utility.h"
32 #include "gx_slider.h"
33
34
35
36 /**************************************************************************/
37 /* */
38 /* FUNCTION RELEASE */
39 /* */
40 /* _gx_slider_value_set PORTABLE C */
41 /* 6.1 */
42 /* AUTHOR */
43 /* */
44 /* Kenneth Maxwell, Microsoft Corporation */
45 /* */
46 /* DESCRIPTION */
47 /* */
48 /* This service sets the slider value. */
49 /* */
50 /* */
51 /* INPUT */
52 /* */
53 /* slider Slider widget control block */
54 /* info Pointer to slider info */
55 /* new_value New slider value */
56 /* */
57 /* OUTPUT */
58 /* */
59 /* status Completion status */
60 /* */
61 /* CALLS */
62 /* */
63 /* _gx_slider_needle_position_get Get the slider needle */
64 /* position */
65 /* _gx_utility_rectangle_combine Combine the first and second */
66 /* rectangle into the first */
67 /* rectangle */
68 /* _gx_system_dirty_partial_add Mark the partial area of this */
69 /* widget as dirty */
70 /* _gx_widget_event_generate Generate an event and send it */
71 /* to the parent widget */
72 /* */
73 /* CALLED BY */
74 /* */
75 /* Application Code */
76 /* GUIX Internal Code */
77 /* */
78 /* RELEASE HISTORY */
79 /* */
80 /* DATE NAME DESCRIPTION */
81 /* */
82 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
83 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
84 /* resulting in version 6.1 */
85 /* */
86 /**************************************************************************/
_gx_slider_value_set(GX_SLIDER * slider,GX_SLIDER_INFO * info,INT new_value)87 UINT _gx_slider_value_set(GX_SLIDER *slider, GX_SLIDER_INFO *info, INT new_value)
88 {
89 GX_RECTANGLE oldpos;
90 GX_RECTANGLE newpos;
91
92 if (new_value != info -> gx_slider_info_current_val)
93 {
94 /* get the old need position */
95 _gx_slider_needle_position_get(slider, info, &oldpos);
96
97 /* assign slider value */
98 info -> gx_slider_info_current_val = new_value;
99
100 /* get the new needle position */
101
102 _gx_slider_needle_position_get(slider, info, &newpos);
103
104 /* combine old and new needle positions */
105 _gx_utility_rectangle_combine(&newpos, &oldpos);
106
107 if (slider -> gx_widget_type == GX_TYPE_PIXELMAP_SLIDER)
108 {
109 newpos.gx_rectangle_left = slider -> gx_widget_size.gx_rectangle_left;
110 newpos.gx_rectangle_right = slider -> gx_widget_size.gx_rectangle_right;
111 }
112
113 /* mark as dirty so that I get redrawn */
114 _gx_system_dirty_partial_add((GX_WIDGET *)slider, &newpos);
115
116 /* notify my parent of my new value */
117 _gx_widget_event_generate((GX_WIDGET *)slider, GX_EVENT_SLIDER_VALUE, new_value);
118 }
119 return(GX_SUCCESS);
120 }
121
122
