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 /** Scroll Management (Scroll) */
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_canvas.h"
28 #include "gx_context.h"
29 #include "gx_widget.h"
30 #include "gx_button.h"
31 #include "gx_scrollbar.h"
32
33 /**************************************************************************/
34 /* */
35 /* FUNCTION RELEASE */
36 /* */
37 /* _gx_scroll_thumb_draw PORTABLE C */
38 /* 6.1 */
39 /* AUTHOR */
40 /* */
41 /* Kenneth Maxwell, Microsoft Corporation */
42 /* */
43 /* DESCRIPTION */
44 /* */
45 /* This service draws a scroll thumb. */
46 /* */
47 /* INPUT */
48 /* */
49 /* scroll_thumb Scroll thumb widget control */
50 /* block */
51 /* */
52 /* OUTPUT */
53 /* */
54 /* None */
55 /* */
56 /* CALLS */
57 /* */
58 /* _gx_context_pixelmap_get Retrieve pixelmap image */
59 /* _gx_widget_width_get Gets the width of the widget */
60 /* _gx_widget_height_get Gets the height of the widget */
61 /* _gx_canvas_pixelmap_draw Draw pixelmap */
62 /* */
63 /* CALLED BY */
64 /* */
65 /* Application Code */
66 /* GUIX Internal Code */
67 /* */
68 /* RELEASE HISTORY */
69 /* */
70 /* DATE NAME DESCRIPTION */
71 /* */
72 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
73 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
74 /* resulting in version 6.1 */
75 /* */
76 /**************************************************************************/
_gx_scroll_thumb_draw(GX_SCROLL_THUMB * thumb)77 VOID _gx_scroll_thumb_draw(GX_SCROLL_THUMB *thumb)
78 {
79 GX_WIDGET *widget = (GX_WIDGET *)thumb;
80 GX_VALUE xpos;
81 GX_VALUE ypos;
82 GX_PIXELMAP *map;
83 GX_VALUE widget_width;
84 GX_VALUE widget_height;
85
86 if (thumb -> gx_scroll_thumb_pixelmap)
87 {
88 _gx_context_pixelmap_get(thumb -> gx_scroll_thumb_pixelmap, &map);
89
90 if (map)
91 {
92 xpos = widget -> gx_widget_size.gx_rectangle_left;
93 _gx_widget_width_get(widget, &widget_width);
94 xpos = (GX_VALUE)(xpos + (widget_width - map -> gx_pixelmap_width) / 2);
95
96 ypos = widget -> gx_widget_size.gx_rectangle_top;
97 _gx_widget_height_get(widget, &widget_height);
98 ypos = (GX_VALUE)(ypos + (widget_height - map -> gx_pixelmap_height) / 2);
99
100 _gx_canvas_pixelmap_draw(xpos, ypos, map);
101 }
102 }
103 else
104 {
105 _gx_widget_border_draw(widget, thumb -> gx_scroll_thumb_border_color,
106 widget -> gx_widget_normal_fill_color,
107 widget -> gx_widget_normal_fill_color, GX_TRUE);
108 }
109 }
110
111
