1 |
|
|
/*************************************************************************** |
2 |
|
|
* Copyright (c) 2024 Microsoft Corporation |
3 |
|
|
* Copyright (c) 2026-present Eclipse ThreadX contributors |
4 |
|
|
* |
5 |
|
|
* This program and the accompanying materials are made available under the |
6 |
|
|
* terms of the MIT License which is available at |
7 |
|
|
* https://opensource.org/licenses/MIT. |
8 |
|
|
* |
9 |
|
|
* SPDX-License-Identifier: MIT |
10 |
|
|
**************************************************************************/ |
11 |
|
|
|
12 |
|
|
|
13 |
|
|
/**************************************************************************/ |
14 |
|
|
/**************************************************************************/ |
15 |
|
|
/** */ |
16 |
|
|
/** GUIX Component */ |
17 |
|
|
/** */ |
18 |
|
|
/** Scroll Wheel Management (Generic Scroll Wheel) */ |
19 |
|
|
/** */ |
20 |
|
|
/**************************************************************************/ |
21 |
|
|
|
22 |
|
|
#define GX_SOURCE_CODE |
23 |
|
|
|
24 |
|
|
|
25 |
|
|
/* Include necessary system files. */ |
26 |
|
|
|
27 |
|
|
#include "gx_api.h" |
28 |
|
|
#include "gx_widget.h" |
29 |
|
|
#include "gx_window.h" |
30 |
|
|
#include "gx_scroll_wheel.h" |
31 |
|
|
#include "gx_utility.h" |
32 |
|
|
#include "gx_system.h" |
33 |
|
|
|
34 |
|
|
/**************************************************************************/ |
35 |
|
|
/* */ |
36 |
|
|
/* FUNCTION RELEASE */ |
37 |
|
|
/* */ |
38 |
|
|
/* _gx_generic_scroll_wheel_scroll PORTABLE C */ |
39 |
|
|
/* 6.2.1 */ |
40 |
|
|
/* AUTHOR */ |
41 |
|
|
/* */ |
42 |
|
|
/* Ting Zhu, Microsoft Corporation */ |
43 |
|
|
/* */ |
44 |
|
|
/* DESCRIPTION */ |
45 |
|
|
/* */ |
46 |
|
|
/* This function moves up or down the generic scroll wheel. */ |
47 |
|
|
/* */ |
48 |
|
|
/* INPUT */ |
49 |
|
|
/* */ |
50 |
|
|
/* wheel Generic scroll wheel control */ |
51 |
|
|
/* block */ |
52 |
|
|
/* amount Shifting value */ |
53 |
|
|
/* */ |
54 |
|
|
/* OUTPUT */ |
55 |
|
|
/* */ |
56 |
|
|
/* None */ |
57 |
|
|
/* */ |
58 |
|
|
/* CALLS */ |
59 |
|
|
/* */ |
60 |
|
|
/* _gx_scroll_wheel_selected_row_calculate */ |
61 |
|
|
/* Calculate the new selected row*/ |
62 |
|
|
/* _gx_widget_first_visible_client_child_get */ |
63 |
|
|
/* Get the first visible client */ |
64 |
|
|
/* _gx_widget_next_visible_client_child_get */ |
65 |
|
|
/* Get the next visible client */ |
66 |
|
|
/* _gx_widget_scroll_shift Shift a widget */ |
67 |
|
|
/* _gx_generic_scroll_wheel_up_wrap Scroll up the scroll wheel */ |
68 |
|
|
/* _gx_generic_scroll_wheel_down_wrap Scroll down the scroll wheel */ |
69 |
|
|
/* _gx_system_dirty_mark Mark the widget as dirty */ |
70 |
|
|
/* */ |
71 |
|
|
/* CALLED BY */ |
72 |
|
|
/* */ |
73 |
|
|
/* GUIX Internal Code */ |
74 |
|
|
/* */ |
75 |
|
|
/**************************************************************************/ |
76 |
|
232 |
UINT _gx_generic_scroll_wheel_scroll(GX_GENERIC_SCROLL_WHEEL *wheel, GX_VALUE shift) |
77 |
|
|
{ |
78 |
|
|
GX_WIDGET *child; |
79 |
|
|
INT y_shift; |
80 |
|
|
INT min_shift; |
81 |
|
|
INT max_shift; |
82 |
|
|
|
83 |
✓✓ |
232 |
if (!shift) |
84 |
|
|
{ |
85 |
|
1 |
return GX_SUCCESS; |
86 |
|
|
} |
87 |
|
|
|
88 |
✓✓ |
231 |
if (!wheel -> gx_scroll_wheel_wrap_style_check((GX_SCROLL_WHEEL *)wheel)) |
89 |
|
|
{ |
90 |
✓✓✓✓
✓✓ |
158 |
if ((shift > 0 && wheel -> gx_scroll_wheel_selected_row == 0) || |
91 |
✓✓ |
86 |
(shift < 0 && wheel -> gx_scroll_wheel_selected_row == wheel -> gx_scroll_wheel_total_rows - 1)) |
92 |
|
|
{ |
93 |
|
8 |
y_shift = wheel -> gx_scroll_wheel_selected_yshift + shift; |
94 |
|
|
|
95 |
|
8 |
min_shift = (wheel -> gx_scroll_wheel_selected_row - wheel -> gx_scroll_wheel_total_rows + 1) * wheel -> gx_scroll_wheel_row_height; |
96 |
|
8 |
max_shift = (wheel -> gx_scroll_wheel_selected_row * wheel -> gx_scroll_wheel_row_height); |
97 |
|
|
|
98 |
✓✓✓✓
|
8 |
if ((y_shift < min_shift) || (y_shift > max_shift)) |
99 |
|
|
{ |
100 |
|
|
|
101 |
|
|
/* Slow down the speed when scroll outside the valid row range. */ |
102 |
|
3 |
shift = (GX_VALUE)(shift + wheel -> gx_scroll_wheel_shift_error); |
103 |
|
3 |
wheel -> gx_scroll_wheel_shift_error = (GX_BYTE)(shift % 4); |
104 |
|
3 |
shift /= 4; |
105 |
|
|
} |
106 |
|
|
else |
107 |
|
|
{ |
108 |
|
5 |
wheel -> gx_scroll_wheel_shift_error = 0; |
109 |
|
|
} |
110 |
|
|
} |
111 |
|
|
} |
112 |
|
|
|
113 |
|
231 |
wheel -> gx_scroll_wheel_selected_yshift = (GX_VALUE)(wheel -> gx_scroll_wheel_selected_yshift + shift); |
114 |
|
|
|
115 |
|
|
/* Calculate the new selected row. */ |
116 |
|
231 |
_gx_scroll_wheel_selected_row_calculate((GX_SCROLL_WHEEL *)wheel); |
117 |
|
|
|
118 |
|
|
|
119 |
|
|
/* First shift my child widgets. */ |
120 |
|
231 |
child = _gx_widget_first_visible_client_child_get((GX_WIDGET *)wheel); |
121 |
|
|
|
122 |
✓✓ |
1861 |
while (child) |
123 |
|
|
{ |
124 |
|
1630 |
_gx_widget_scroll_shift(child, 0, shift, GX_TRUE); |
125 |
|
|
|
126 |
✓✓ |
1630 |
if (child -> gx_widget_style & GX_STYLE_DRAW_SELECTED) |
127 |
|
|
{ |
128 |
|
61 |
child -> gx_widget_style &= (~GX_STYLE_DRAW_SELECTED); |
129 |
|
|
} |
130 |
|
|
|
131 |
|
1630 |
child = _gx_widget_next_visible_client_child_get(child); |
132 |
|
|
} |
133 |
|
|
|
134 |
|
|
/* Next check to see if we need to wrap any child widgets. */ |
135 |
|
|
|
136 |
✓✓ |
231 |
if ((wheel -> gx_generic_scroll_wheel_callback != GX_NULL) && |
137 |
✓✓ |
160 |
(wheel -> gx_generic_scroll_wheel_visible_rows < wheel -> gx_scroll_wheel_total_rows) && |
138 |
✓✓✓✓
|
153 |
((wheel -> gx_generic_scroll_wheel_child_count < wheel -> gx_scroll_wheel_total_rows) || (wheel -> gx_widget_style & GX_STYLE_WRAP))) |
139 |
|
|
{ |
140 |
|
|
|
141 |
|
|
/* This means we have fewer children than list rows, so we |
142 |
|
|
need to move and re-use the child widgets. */ |
143 |
✓✓ |
151 |
if (shift < 0) |
144 |
|
|
{ |
145 |
|
66 |
_gx_generic_scroll_wheel_up_wrap(wheel); |
146 |
|
|
} |
147 |
|
|
else |
148 |
|
|
{ |
149 |
|
85 |
_gx_generic_scroll_wheel_down_wrap(wheel); |
150 |
|
|
} |
151 |
|
|
} |
152 |
|
|
|
153 |
✓✓ |
231 |
if (wheel -> gx_widget_status & GX_STATUS_VISIBLE) |
154 |
|
|
{ |
155 |
|
229 |
_gx_system_dirty_mark((GX_WIDGET *)wheel); |
156 |
|
|
} |
157 |
|
231 |
return GX_SUCCESS; |
158 |
|
|
} |
159 |
|
|
|