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 /** Scroll Management (Scroll) */
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_canvas.h"
29 #include "gx_context.h"
30 #include "gx_widget.h"
31 #include "gx_icon.h"
32 #include "gx_scrollbar.h"
33 #include "gx_utility.h"
34
35 /**************************************************************************/
36 /* */
37 /* FUNCTION RELEASE */
38 /* */
39 /* _gx_scrollbar_draw PORTABLE C */
40 /* 6.1 */
41 /* AUTHOR */
42 /* */
43 /* Kenneth Maxwell, Microsoft Corporation */
44 /* */
45 /* DESCRIPTION */
46 /* */
47 /* This function draws the specified scroll bar, which is a */
48 /* special type of widget. */
49 /* */
50 /* INPUT */
51 /* */
52 /* scrollbar Scrollbar widget to draw */
53 /* */
54 /* OUTPUT */
55 /* */
56 /* None */
57 /* */
58 /* CALLS */
59 /* */
60 /* _gx_context_brush_define Define the brush for the */
61 /* context */
62 /* _gx_context_brush_width_set Set the width of the brush */
63 /* _gx_canvas_rectangle_draw Draw rectangle */
64 /* _gx_context_pixelmap_get Retrieve pixelmap image */
65 /* _gx_canvas_pixelmap_tile Tile the canvas area with */
66 /* pixelmap */
67 /* _gx_canvas_pixelmap_draw Draw pixelmap */
68 /* _gx_widget_width_get Retrieve the width of the */
69 /* widget */
70 /* _gx_widget_height_get Retrieve the height of the */
71 /* widget */
72 /* _gx_widget_children_draw Draw children widgets */
73 /* */
74 /* CALLED BY */
75 /* */
76 /* Application Code */
77 /* GUIX Internal Code */
78 /* */
79 /* RELEASE HISTORY */
80 /* */
81 /* DATE NAME DESCRIPTION */
82 /* */
83 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
84 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
85 /* resulting in version 6.1 */
86 /* */
87 /**************************************************************************/
_gx_scrollbar_draw(GX_SCROLLBAR * scrollbar)88 VOID _gx_scrollbar_draw(GX_SCROLLBAR *scrollbar)
89 {
90 GX_PIXELMAP *map;
91 GX_VALUE xpos;
92 GX_VALUE ypos;
93 GX_VALUE widget_width;
94 GX_VALUE widget_height;
95 GX_RECTANGLE size;
96 GX_RECTANGLE old_dirty;
97 GX_COLOR fill_color;
98
99 if (scrollbar -> gx_widget_style & GX_STYLE_ENABLED)
100 {
101 if (scrollbar -> gx_widget_style & GX_STYLE_DRAW_SELECTED)
102 {
103 fill_color = scrollbar -> gx_widget_selected_fill_color;
104 }
105 else
106 {
107 fill_color = scrollbar -> gx_widget_normal_fill_color;
108 }
109 }
110 else
111 {
112 fill_color = scrollbar -> gx_widget_disabled_fill_color;
113 }
114
115 if ((scrollbar -> gx_widget_style & GX_STYLE_TRANSPARENT) == 0)
116 {
117 size = scrollbar -> gx_widget_size;
118
119 /* Draw background. */
120 if (scrollbar -> gx_widget_style & GX_STYLE_BORDER_THIN)
121 {
122 _gx_context_brush_define(GX_COLOR_ID_SHADOW,
123 fill_color,
124 GX_BRUSH_SOLID_FILL);
125 _gx_context_brush_width_set(1);
126 }
127 else
128 {
129 _gx_context_brush_define(fill_color,
130 fill_color,
131 GX_BRUSH_SOLID_FILL);
132 _gx_context_brush_width_set(0);
133 _gx_canvas_rectangle_draw(&size);
134 }
135 _gx_canvas_rectangle_draw(&size);
136
137 /* Draw pixelmaps. */
138 _gx_context_pixelmap_get(scrollbar -> gx_scrollbar_appearance.gx_scroll_up_pixelmap, &map);
139
140 if (map)
141 {
142 if (scrollbar -> gx_widget_type == GX_TYPE_VERTICAL_SCROLL)
143 {
144 /* Draw up pixelmap. */
145 xpos = size.gx_rectangle_left;
146 _gx_widget_width_get((GX_WIDGET *)scrollbar, &widget_width);
147 xpos = (GX_VALUE)(xpos + (widget_width - map -> gx_pixelmap_width) / 2);
148
149 ypos = size.gx_rectangle_top;
150
151 size.gx_rectangle_top = (GX_VALUE)(size.gx_rectangle_top + map -> gx_pixelmap_height);
152 }
153 else
154 {
155 /* Draw left pixelmap. */
156 xpos = size.gx_rectangle_left;
157
158 ypos = size.gx_rectangle_top;
159 _gx_widget_height_get((GX_WIDGET *)scrollbar, &widget_height);
160 ypos = (GX_VALUE)(ypos + (widget_height - map -> gx_pixelmap_height) / 2);
161
162 size.gx_rectangle_left = (GX_VALUE)(size.gx_rectangle_left + map -> gx_pixelmap_width);
163 }
164
165 _gx_canvas_pixelmap_draw(xpos, ypos, map);
166 }
167
168 _gx_context_pixelmap_get(scrollbar -> gx_scrollbar_appearance.gx_scroll_down_pixelmap, &map);
169
170 if (map)
171 {
172 if (scrollbar -> gx_widget_type == GX_TYPE_VERTICAL_SCROLL)
173 {
174 /* Draw down pixelmap. */
175 size.gx_rectangle_bottom = (GX_VALUE)(size.gx_rectangle_bottom - map -> gx_pixelmap_height);
176
177 xpos = size.gx_rectangle_left;
178 _gx_widget_width_get((GX_WIDGET *)scrollbar, &widget_width);
179 xpos = (GX_VALUE)(xpos + (widget_width - map -> gx_pixelmap_width) / 2);
180
181 ypos = size.gx_rectangle_bottom;
182 }
183 else
184 {
185 /* Draw right pixelmap. */
186 size.gx_rectangle_right = (GX_VALUE)(size.gx_rectangle_right - map -> gx_pixelmap_width);
187
188 xpos = size.gx_rectangle_right;
189
190 ypos = size.gx_rectangle_top;
191 _gx_widget_height_get((GX_WIDGET *)scrollbar, &widget_height);
192 ypos = (GX_VALUE)(ypos + (widget_height - map -> gx_pixelmap_height) / 2);
193 }
194
195 _gx_canvas_pixelmap_draw(xpos, ypos, map);
196 }
197
198 _gx_context_pixelmap_get(scrollbar -> gx_scrollbar_appearance.gx_scroll_fill_pixelmap, &map);
199
200 if (map)
201 {
202 /* Draw background pixelmap. */
203 if (scrollbar -> gx_widget_style & GX_STYLE_TILE_BACKGROUND)
204 {
205 _gx_canvas_pixelmap_tile(&size, map);
206 }
207 else
208 {
209 xpos = size.gx_rectangle_left;
210 _gx_widget_width_get((GX_WIDGET *)scrollbar, &widget_width);
211 xpos = (GX_VALUE)(xpos + (widget_width - map -> gx_pixelmap_width) / 2);
212
213 ypos = size.gx_rectangle_top;
214 _gx_widget_height_get((GX_WIDGET *)scrollbar, &widget_height);
215 ypos = (GX_VALUE)(ypos + (widget_height - map -> gx_pixelmap_height) / 2);
216
217 /* Reset dirty area temporarily to avoid cover the end pixelmap area. */
218 old_dirty = _gx_system_current_draw_context -> gx_draw_context_dirty;
219 _gx_utility_rectangle_combine(&old_dirty, &size);
220 _gx_system_current_draw_context -> gx_draw_context_dirty = size;
221
222 _gx_canvas_pixelmap_draw(xpos, ypos, map);
223
224 /* Set dirty area back. */
225 _gx_system_current_draw_context -> gx_draw_context_dirty = old_dirty;
226 }
227 }
228 }
229
230 /* Draw children widgets of prompt widget. */
231 _gx_widget_children_draw((GX_WIDGET *)scrollbar);
232 }
233
234
