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 /** Text Input Management (Multi Line Text Input) */
18 /** */
19 /**************************************************************************/
20
21 #define GX_SOURCE_CODE
22
23
24 /* Include necessary system files. */
25
26 #include "gx_api.h"
27 #include "gx_system.h"
28 #include "gx_widget.h"
29 #include "gx_multi_line_text_input.h"
30
31 /**************************************************************************/
32 /* */
33 /* FUNCTION RELEASE */
34 /* */
35 /* _gx_multi_line_text_input_text_rectangle_get PORTABLE C */
36 /* 6.1 */
37 /* AUTHOR */
38 /* */
39 /* Kenneth Maxwell, Microsoft Corporation */
40 /* */
41 /* DESCRIPTION */
42 /* */
43 /* This function retrieves the bounding box of specified text. */
44 /* */
45 /* INPUT */
46 /* */
47 /* input Multi-line text input widget */
48 /* control block */
49 /* start_index The start index of the */
50 /* specified text */
51 /* end_index The end index of the */
52 /* specified text */
53 /* rect Retrieved bounding rectangle */
54 /* */
55 /* OUTPUT */
56 /* */
57 /* None */
58 /* */
59 /* CALLS */
60 /* */
61 /* _gx_system_dirty_mark Mark widget as drity */
62 /* */
63 /* RELEASE HISTORY */
64 /* */
65 /* DATE NAME DESCRIPTION */
66 /* */
67 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
68 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
69 /* resulting in version 6.1 */
70 /* */
71 /**************************************************************************/
_gx_multi_line_text_input_text_rectangle_get(GX_MULTI_LINE_TEXT_INPUT * input,GX_POINT start_cursor_pos,GX_POINT end_cursor_pos,GX_RECTANGLE * rect)72 UINT _gx_multi_line_text_input_text_rectangle_get(GX_MULTI_LINE_TEXT_INPUT *input, GX_POINT start_cursor_pos, GX_POINT end_cursor_pos, GX_RECTANGLE *rect)
73 {
74 GX_FONT *font;
75 GX_VALUE border_width;
76 GX_VALUE half_line_height;
77 GX_VALUE cursor_width;
78
79
80 /* Pick up font. */
81 _gx_widget_font_get((GX_WIDGET *)input, input -> gx_multi_line_text_view_font_id, &font);
82
83 if (!font)
84 {
85 return GX_FAILURE;
86 }
87
88 /* Pickup widget border width. */
89 _gx_widget_border_width_get((GX_WIDGET *)input, &border_width);
90
91 /* Get client rectangle. */
92 _gx_widget_client_get((GX_WIDGET *)input, border_width, rect);
93
94 half_line_height = (GX_VALUE)(font -> gx_font_line_height + input -> gx_multi_line_text_view_line_space);
95 half_line_height = (GX_VALUE)(half_line_height >> 1);
96
97 if (start_cursor_pos.gx_point_y == end_cursor_pos.gx_point_y)
98 {
99 if (start_cursor_pos.gx_point_x > end_cursor_pos.gx_point_x)
100 {
101 GX_SWAP_VALS(start_cursor_pos.gx_point_x, end_cursor_pos.gx_point_x);
102 }
103
104 cursor_width = input -> gx_multi_line_text_input_cursor_instance.gx_text_input_cursor_width;
105 rect -> gx_rectangle_top = (GX_VALUE)(start_cursor_pos.gx_point_y - half_line_height);
106 rect -> gx_rectangle_bottom = (GX_VALUE)(start_cursor_pos.gx_point_y + half_line_height);
107 rect -> gx_rectangle_left = (GX_VALUE)(start_cursor_pos.gx_point_x - (cursor_width >> 1));
108 rect -> gx_rectangle_right = (GX_VALUE)(end_cursor_pos.gx_point_x + ((cursor_width + 1) >> 1) - 1);
109 }
110 else
111 {
112 if (start_cursor_pos.gx_point_y > end_cursor_pos.gx_point_y)
113 {
114 GX_SWAP_VALS(start_cursor_pos.gx_point_y, end_cursor_pos.gx_point_y);
115 }
116 rect -> gx_rectangle_top = (GX_VALUE)(start_cursor_pos.gx_point_y - half_line_height);
117 rect -> gx_rectangle_bottom = (GX_VALUE)(end_cursor_pos.gx_point_y + half_line_height);
118 }
119
120 return GX_SUCCESS;
121 }
122
123
