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 (Single 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_single_line_text_input.h"
30
31 /**************************************************************************/
32 /* */
33 /* FUNCTION RELEASE */
34 /* */
35 /* _gx_single_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 from the current cursor */
44 /* position to the specified offset position. */
45 /* */
46 /* INPUT */
47 /* */
48 /* text_input Single-line text input widget */
49 /* control block */
50 /* offset_index Index offset to the current */
51 /* cursor position */
52 /* rect Retrieved bounding rectangle */
53 /* */
54 /* OUTPUT */
55 /* */
56 /* Completion status */
57 /* */
58 /* CALLS */
59 /* */
60 /* _gx_system_dirty_mark Mark widget as drity */
61 /* */
62 /* RELEASE HISTORY */
63 /* */
64 /* DATE NAME DESCRIPTION */
65 /* */
66 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
67 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
68 /* resulting in version 6.1 */
69 /* */
70 /**************************************************************************/
_gx_single_line_text_input_text_rectangle_get(GX_SINGLE_LINE_TEXT_INPUT * input,INT offset_index,GX_RECTANGLE * rect)71 UINT _gx_single_line_text_input_text_rectangle_get(GX_SINGLE_LINE_TEXT_INPUT *input, INT offset_index, GX_RECTANGLE *rect)
72 {
73 GX_TEXT_INPUT_CURSOR *cursor = &input -> gx_single_line_text_input_cursor_instance;
74 GX_FONT *font;
75 GX_VALUE text_width;
76 GX_VALUE border_width;
77 INT start_index;
78 INT end_index;
79 GX_STRING string;
80
81 if (offset_index == 0)
82 {
83 return GX_FAILURE;
84 }
85
86 if (offset_index > 0)
87 {
88 start_index = (INT)input -> gx_single_line_text_input_insert_pos;
89 end_index = start_index + offset_index;
90 }
91 else
92 {
93 start_index = (INT)input -> gx_single_line_text_input_insert_pos + (INT)offset_index;
94 end_index = (INT)(input -> gx_single_line_text_input_insert_pos);
95 }
96
97 /* Pick up font. */
98 _gx_widget_font_get((GX_WIDGET *)input, input -> gx_prompt_font_id, &font);
99
100 /* Get the width of specified text. */
101 string.gx_string_ptr = input -> gx_single_line_text_input_buffer + start_index;
102 string.gx_string_length = (UINT)(end_index - start_index);
103 _gx_system_string_width_get_ext(font, &string, &text_width);
104
105 /* Pickup widget border width. */
106 _gx_widget_border_width_get((GX_WIDGET *)input, &border_width);
107
108 /* Get client rectangle. */
109 _gx_widget_client_get((GX_WIDGET *)input, border_width, rect);
110
111 if (offset_index > 0)
112 {
113 rect -> gx_rectangle_left = cursor -> gx_text_input_cursor_pos.gx_point_x;
114 rect -> gx_rectangle_right = (GX_VALUE)(rect -> gx_rectangle_left + text_width - 1);
115 }
116 else
117 {
118 rect -> gx_rectangle_right = (GX_VALUE)(cursor -> gx_text_input_cursor_pos.gx_point_x - 1);
119 rect -> gx_rectangle_left = (GX_VALUE)(rect -> gx_rectangle_right - text_width);
120 }
121
122 return GX_SUCCESS;
123 }
124
125
