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 |
|
|
/** Rich Text View Management (Rich Text View) */ |
19 |
|
|
/** */ |
20 |
|
|
/**************************************************************************/ |
21 |
|
|
|
22 |
|
|
#define GX_SOURCE_CODE |
23 |
|
|
|
24 |
|
|
|
25 |
|
|
/* Include necessary system files. */ |
26 |
|
|
|
27 |
|
|
#include "gx_api.h" |
28 |
|
|
#include "gx_system.h" |
29 |
|
|
#include "gx_window.h" |
30 |
|
|
#include "gx_widget.h" |
31 |
|
|
#include "gx_utility.h" |
32 |
|
|
#include "gx_rich_text_view.h" |
33 |
|
|
|
34 |
|
|
/**************************************************************************/ |
35 |
|
|
/* */ |
36 |
|
|
/* FUNCTION RELEASE */ |
37 |
|
|
/* */ |
38 |
|
|
/* _gx_rich_text_view_scroll_info_get PORTABLE C */ |
39 |
|
|
/* 6.1 */ |
40 |
|
|
/* AUTHOR */ |
41 |
|
|
/* */ |
42 |
|
|
/* Kenneth Maxwell, Microsoft Corporation */ |
43 |
|
|
/* */ |
44 |
|
|
/* DESCRIPTION */ |
45 |
|
|
/* */ |
46 |
|
|
/* This function gets the rich text view scroll information. */ |
47 |
|
|
/* */ |
48 |
|
|
/* INPUT */ |
49 |
|
|
/* */ |
50 |
|
|
/* text_view Rich text view control block */ |
51 |
|
|
/* style Reserved */ |
52 |
|
|
/* info Pointer to destination for */ |
53 |
|
|
/* scroll info */ |
54 |
|
|
/* */ |
55 |
|
|
/* OUTPUT */ |
56 |
|
|
/* */ |
57 |
|
|
/* status Completion status */ |
58 |
|
|
/* */ |
59 |
|
|
/* CALLS */ |
60 |
|
|
/* */ |
61 |
|
|
/* _gx_widget_font_get Obtain the font */ |
62 |
|
|
/* _gx_multi_line_text_view_string_total_rows_computer */ |
63 |
|
|
/* Compute the number of rows */ |
64 |
|
|
/* for the text view text */ |
65 |
|
|
/* _gx_utility_rectangle_resize Offset rectangle */ |
66 |
|
|
/* */ |
67 |
|
|
/* CALLED BY */ |
68 |
|
|
/* */ |
69 |
|
|
/* GUIX Internal Code */ |
70 |
|
|
/* */ |
71 |
|
|
/**************************************************************************/ |
72 |
|
50 |
UINT _gx_rich_text_view_scroll_info_get(GX_RICH_TEXT_VIEW *text_view, ULONG style, GX_SCROLL_INFO *info) |
73 |
|
|
{ |
74 |
|
|
GX_RECTANGLE client; |
75 |
|
|
GX_VALUE line_height; |
76 |
|
|
INT text_height; |
77 |
|
|
INT value; |
78 |
|
|
INT shift; |
79 |
|
|
GX_FONT *font; |
80 |
|
|
|
81 |
|
|
GX_PARAMETER_NOT_USED(style); |
82 |
|
|
|
83 |
|
|
/* Get font. */ |
84 |
|
50 |
_gx_widget_font_get((GX_WIDGET *)text_view, text_view -> gx_rich_text_view_fonts.gx_rich_text_fonts_normal_id, &font); |
85 |
|
|
|
86 |
✓✓ |
50 |
if (!font) |
87 |
|
|
{ |
88 |
|
3 |
return GX_FAILURE; |
89 |
|
|
} |
90 |
|
|
|
91 |
✓✓ |
47 |
if (text_view -> gx_multi_line_text_view_line_index_old) |
92 |
|
|
{ |
93 |
|
|
/* Calculate text total height. */ |
94 |
|
6 |
_gx_rich_text_view_text_total_height_calculate(text_view); |
95 |
|
|
} |
96 |
|
|
|
97 |
|
|
/* Pickup text height. */ |
98 |
|
47 |
line_height = (GX_VALUE)(font -> gx_font_line_height + text_view -> gx_multi_line_text_view_line_space); |
99 |
|
47 |
text_height = (INT)text_view -> gx_rich_text_view_text_total_height; |
100 |
|
|
|
101 |
|
47 |
client = text_view -> gx_window_client; |
102 |
|
|
|
103 |
✓✓ |
47 |
if (text_view -> gx_multi_line_text_view_whitespace) |
104 |
|
|
{ |
105 |
|
|
/* Offset client bounding box. */ |
106 |
|
44 |
_gx_utility_rectangle_resize(&client, (GX_VALUE)(-text_view -> gx_multi_line_text_view_whitespace)); |
107 |
|
|
} |
108 |
|
|
|
109 |
|
47 |
info -> gx_scroll_minimum = client.gx_rectangle_top; |
110 |
|
47 |
info -> gx_scroll_maximum = info -> gx_scroll_minimum + text_height - 1; |
111 |
|
47 |
info -> gx_scroll_visible = (GX_VALUE)(client.gx_rectangle_bottom - client.gx_rectangle_top + 1); |
112 |
|
|
|
113 |
✓✓ |
47 |
if (text_height < info -> gx_scroll_visible) |
114 |
|
|
{ |
115 |
|
36 |
info -> gx_scroll_maximum = info -> gx_scroll_minimum + info -> gx_scroll_visible - 1; |
116 |
|
|
} |
117 |
|
|
|
118 |
|
47 |
shift = text_view -> gx_multi_line_text_view_text_scroll_shift; |
119 |
|
47 |
value = client.gx_rectangle_top - shift; |
120 |
|
|
|
121 |
✓✓ |
47 |
if (value < info -> gx_scroll_minimum) |
122 |
|
|
{ |
123 |
|
1 |
value = info -> gx_scroll_minimum; |
124 |
|
|
} |
125 |
✓✓ |
46 |
else if (value > info -> gx_scroll_maximum - info -> gx_scroll_visible + 1) |
126 |
|
|
{ |
127 |
|
2 |
value = info -> gx_scroll_maximum - info -> gx_scroll_visible + 1; |
128 |
|
|
} |
129 |
|
|
|
130 |
|
47 |
shift = client.gx_rectangle_top - value; |
131 |
|
|
|
132 |
✓✓ |
47 |
if (shift != text_view -> gx_multi_line_text_view_text_scroll_shift) |
133 |
|
|
{ |
134 |
|
|
/* Update shift value. */ |
135 |
|
3 |
text_view -> gx_multi_line_text_view_text_scroll_shift = shift; |
136 |
|
|
} |
137 |
|
|
|
138 |
|
47 |
info -> gx_scroll_value = value; |
139 |
|
47 |
info -> gx_scroll_increment = line_height; |
140 |
|
|
|
141 |
|
47 |
return GX_SUCCESS; |
142 |
|
|
} |
143 |
|
|
|