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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	gx_single_line_text_input_position_get.c	Lines:	61	61	100.0 %
Date:	2026-03-06 19:21:09	Branches:	19	19	100.0 %


/***************************************************************************
 * Copyright (c) 2024 Microsoft Corporation
 * Copyright (c) 2026-present Eclipse ThreadX contributors
 *
 * This program and the accompanying materials are made available under the
 * terms of the MIT License which is available at
 * https://opensource.org/licenses/MIT.
 *
 * SPDX-License-Identifier: MIT
 **************************************************************************/


/**************************************************************************/
/**************************************************************************/
/**                                                                       */
/** GUIX Component                                                        */
/**                                                                       */
/**   Text Input Management (Single Line Text Input)                      */
/**                                                                       */
/**************************************************************************/

#define GX_SOURCE_CODE


/* Include necessary system files.  */

#include "gx_api.h"
#include "gx_context.h"
#include "gx_system.h"
#include "gx_widget.h"
#include "gx_single_line_text_input.h"
#include "gx_utility.h"

/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _gx_single_line_text_input_position_get             PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Kenneth Maxwell, Microsoft Corporation                              */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This service positions the text input cursor based on the requested */
/*    cursor position. The text input cursor index will be calculated     */
/*    based on the x value of the pixel pisition.                         */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    text_input                                Single-line text input    */
/*                                                widget control block    */
/*    pixel_position                            X value of pixel position */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    Status                                    Completion status         */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    _gx_widget_font_get                   Get widget font               */
/*    _gx_widget_border_width_get           Get the widget border width   */
/*    _gx_widget_client_get                 Get client rectangle          */
/*    _gx_utility_utf8_string_character_get Parse utf8 string to          */
/*                                            multi-byte glyph            */
/*    _gx_system_string_width_get           Get the width of a string     */
/*    _gx_system_dirty_mark                 Mark a widget area dirty      */
/*    _gx_system_dirty_partial_add          Mark the partial area of a    */
/*                                            widget as dirty             */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    Application Code                                                    */
/*    GUIX Internal Code                                                  */
/*                                                                        */
/**************************************************************************/
UINT _gx_single_line_text_input_position_get(GX_SINGLE_LINE_TEXT_INPUT *text_input, INT pixel_position)
{
GX_TEXT_INPUT_CURSOR *cursor_ptr;
GX_CHAR              *string_buffer;
GX_FONT              *gx_font;
GX_RECTANGLE          client;
GX_VALUE              width;
GX_VALUE              cursor_pos;
GX_VALUE              x_pos;
GX_VALUE              distance;
UINT                  new_insert_pos;
UINT                  index;
UINT                  glyph_len = 1;
GX_STRING             utf8_string;
GX_STRING             string;

    string.gx_string_ptr = text_input -> gx_single_line_text_input_buffer;
    string.gx_string_length = text_input -> gx_single_line_text_input_string_size;

    cursor_ptr = &text_input -> gx_single_line_text_input_cursor_instance;

    string_buffer = text_input -> gx_single_line_text_input_buffer;

    _gx_widget_font_get((GX_WIDGET *)text_input, text_input -> gx_prompt_font_id, &gx_font);

    _gx_widget_border_width_get((GX_WIDGET *)text_input, &width);
    _gx_widget_client_get((GX_WIDGET *)text_input, width, &client);

    switch (text_input -> gx_widget_style & GX_STYLE_TEXT_ALIGNMENT_MASK)
    {
    case GX_STYLE_TEXT_RIGHT:
        x_pos = (GX_VALUE)(client.gx_rectangle_right - 1);
        break;

    case GX_STYLE_TEXT_CENTER:
        x_pos = (GX_VALUE)(client.gx_rectangle_left + 1 + ((client.gx_rectangle_right - client.gx_rectangle_left + 1) >> 1));
        break;

    case GX_STYLE_TEXT_LEFT:
    default:
        x_pos = (GX_VALUE)(client.gx_rectangle_left + 1);
        break;
    }

    x_pos = (GX_VALUE)(x_pos - text_input -> gx_single_line_text_input_xoffset);

    /* Reset mouse down position when it was out of the text show area. */
    if (pixel_position < client.gx_rectangle_left + 1)
    {
        pixel_position = client.gx_rectangle_left + 1;
    }
    else if (pixel_position > client.gx_rectangle_right + 1)
    {
        pixel_position = client.gx_rectangle_right - 1;
    }

    /*Compute the distance from the first character position to the mouse down position. */
    if (pixel_position > x_pos)
    {
        distance = (GX_VALUE)(pixel_position - x_pos);
    }
    else
    {
        distance = 0;
    }

    new_insert_pos = string.gx_string_length;
    index = 0;
    cursor_pos = 0;

    while (string.gx_string_length > 0)
    {
#ifdef GX_UTF8_SUPPORT
        _gx_utility_utf8_string_character_get(&string, GX_NULL, &glyph_len);
#else
        string.gx_string_ptr++;
        string.gx_string_length--;
#endif
        utf8_string.gx_string_ptr = string_buffer + index;
        utf8_string.gx_string_length = glyph_len;

        _gx_system_string_width_get_ext(gx_font, &utf8_string, &width);
        if ((cursor_pos + width / 2) > distance)
        {
            new_insert_pos = index;
            break;
        }
        cursor_pos = (GX_VALUE)(cursor_pos + width);
        index += glyph_len;
    }

    /* Update insert position. */
    text_input -> gx_single_line_text_input_insert_pos = new_insert_pos;

    cursor_pos = (GX_VALUE)(x_pos + cursor_pos);

    if (cursor_pos < client.gx_rectangle_left + 1)
    {
        /* Cursor is beyond widget left, adjust text offset to show cursor.  */
        cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = (GX_VALUE)(client.gx_rectangle_left + 1);

        distance = (GX_VALUE)(client.gx_rectangle_left + 1 - cursor_pos);
        text_input -> gx_single_line_text_input_xoffset = (GX_VALUE)(text_input -> gx_single_line_text_input_xoffset - distance);

        /* Text offset is modified, mark whole text input area dirty. */
        _gx_system_dirty_mark((GX_WIDGET *)text_input);
    }
    else if (cursor_pos > client.gx_rectangle_right - 1)
    {
        /* Cursor is beyond widget right, adjust text offset to show cursor.  */
        cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = (GX_VALUE)(client.gx_rectangle_right - 1);

        distance = (GX_VALUE)(cursor_pos - (client.gx_rectangle_right - 1));
        text_input -> gx_single_line_text_input_xoffset = (GX_VALUE)(text_input -> gx_single_line_text_input_xoffset + distance);

        /* Text offset is modified, mark whole text input area dirty. */
        _gx_system_dirty_mark((GX_WIDGET *)text_input);
    }
    else if (cursor_ptr -> gx_text_input_cursor_pos.gx_point_x != cursor_pos)
    {
        /* For this situation, we only need to mark old and new cursor position dirty.  */
        client.gx_rectangle_left = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_x - (cursor_ptr -> gx_text_input_cursor_width >> 1));
        client.gx_rectangle_right = (GX_VALUE)(client.gx_rectangle_left + cursor_ptr -> gx_text_input_cursor_width);
        _gx_system_dirty_partial_add((GX_WIDGET *)text_input, &client);

        cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = cursor_pos;

        client.gx_rectangle_left = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_x - (cursor_ptr -> gx_text_input_cursor_width >> 1));
        client.gx_rectangle_right = (GX_VALUE)(client.gx_rectangle_left + cursor_ptr -> gx_text_input_cursor_width);
        _gx_system_dirty_partial_add((GX_WIDGET *)text_input, &client);
    }

    return GX_SUCCESS;
}



Generated by: GCOVR (Version 4.1)

Line	Branch	Exec	Source
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			/** Text Input Management (Single Line Text Input) */
19			/** */
20			/**************************************************************************/
21
22			#define GX_SOURCE_CODE
23
24
25			/* Include necessary system files. */
26
27			#include "gx_api.h"
28			#include "gx_context.h"
29			#include "gx_system.h"
30			#include "gx_widget.h"
31			#include "gx_single_line_text_input.h"
32			#include "gx_utility.h"
33
34			/**************************************************************************/
35			/* */
36			/* FUNCTION RELEASE */
37			/* */
38			/* _gx_single_line_text_input_position_get PORTABLE C */
39			/* 6.1 */
40			/* AUTHOR */
41			/* */
42			/* Kenneth Maxwell, Microsoft Corporation */
43			/* */
44			/* DESCRIPTION */
45			/* */
46			/* This service positions the text input cursor based on the requested */
47			/* cursor position. The text input cursor index will be calculated */
48			/* based on the x value of the pixel pisition. */
49			/* */
50			/* INPUT */
51			/* */
52			/* text_input Single-line text input */
53			/* widget control block */
54			/* pixel_position X value of pixel position */
55			/* */
56			/* OUTPUT */
57			/* */
58			/* Status Completion status */
59			/* */
60			/* CALLS */
61			/* */
62			/* _gx_widget_font_get Get widget font */
63			/* _gx_widget_border_width_get Get the widget border width */
64			/* _gx_widget_client_get Get client rectangle */
65			/* _gx_utility_utf8_string_character_get Parse utf8 string to */
66			/* multi-byte glyph */
67			/* _gx_system_string_width_get Get the width of a string */
68			/* _gx_system_dirty_mark Mark a widget area dirty */
69			/* _gx_system_dirty_partial_add Mark the partial area of a */
70			/* widget as dirty */
71			/* */
72			/* CALLED BY */
73			/* */
74			/* Application Code */
75			/* GUIX Internal Code */
76			/* */
77			/**************************************************************************/
78		1866	UINT _gx_single_line_text_input_position_get(GX_SINGLE_LINE_TEXT_INPUT *text_input, INT pixel_position)
79			{
80			GX_TEXT_INPUT_CURSOR *cursor_ptr;
81			GX_CHAR *string_buffer;
82			GX_FONT *gx_font;
83			GX_RECTANGLE client;
84			GX_VALUE width;
85			GX_VALUE cursor_pos;
86			GX_VALUE x_pos;
87			GX_VALUE distance;
88			UINT new_insert_pos;
89			UINT index;
90		1866	UINT glyph_len = 1;
91			GX_STRING utf8_string;
92			GX_STRING string;
93
94		1866	string.gx_string_ptr = text_input -> gx_single_line_text_input_buffer;
95		1866	string.gx_string_length = text_input -> gx_single_line_text_input_string_size;
96
97		1866	cursor_ptr = &text_input -> gx_single_line_text_input_cursor_instance;
98
99		1866	string_buffer = text_input -> gx_single_line_text_input_buffer;
100
101		1866	_gx_widget_font_get((GX_WIDGET *)text_input, text_input -> gx_prompt_font_id, &gx_font);
102
103		1866	_gx_widget_border_width_get((GX_WIDGET *)text_input, &width);
104		1866	_gx_widget_client_get((GX_WIDGET *)text_input, width, &client);
105
106	✓✓✓	1866	switch (text_input -> gx_widget_style & GX_STYLE_TEXT_ALIGNMENT_MASK)
107			{
108		454	case GX_STYLE_TEXT_RIGHT:
109		454	x_pos = (GX_VALUE)(client.gx_rectangle_right - 1);
110		454	break;
111
112		454	case GX_STYLE_TEXT_CENTER:
113		454	x_pos = (GX_VALUE)(client.gx_rectangle_left + 1 + ((client.gx_rectangle_right - client.gx_rectangle_left + 1) >> 1));
114		454	break;
115
116		958	case GX_STYLE_TEXT_LEFT:
117			default:
118		958	x_pos = (GX_VALUE)(client.gx_rectangle_left + 1);
119		958	break;
120			}
121
122		1866	x_pos = (GX_VALUE)(x_pos - text_input -> gx_single_line_text_input_xoffset);
123
124			/* Reset mouse down position when it was out of the text show area. */
125	✓✓	1866	if (pixel_position < client.gx_rectangle_left + 1)
126			{
127		608	pixel_position = client.gx_rectangle_left + 1;
128			}
129	✓✓	1258	else if (pixel_position > client.gx_rectangle_right + 1)
130			{
131		605	pixel_position = client.gx_rectangle_right - 1;
132			}
133
134			/Compute the distance from the first character position to the mouse down position. /
135	✓✓	1866	if (pixel_position > x_pos)
136			{
137		1582	distance = (GX_VALUE)(pixel_position - x_pos);
138			}
139			else
140			{
141		284	distance = 0;
142			}
143
144		1866	new_insert_pos = string.gx_string_length;
145		1866	index = 0;
146		1866	cursor_pos = 0;
147
148	✓✓	76039	while (string.gx_string_length > 0)
149			{
150			#ifdef GX_UTF8_SUPPORT
151		75567	_gx_utility_utf8_string_character_get(&string, GX_NULL, &glyph_len);
152			#else
153			string.gx_string_ptr++;
154			string.gx_string_length--;
155			#endif
156		75567	utf8_string.gx_string_ptr = string_buffer + index;
157		75567	utf8_string.gx_string_length = glyph_len;
158
159		75567	_gx_system_string_width_get_ext(gx_font, &utf8_string, &width);
160	✓✓	75567	if ((cursor_pos + width / 2) > distance)
161			{
162		1394	new_insert_pos = index;
163		1394	break;
164			}
165		74173	cursor_pos = (GX_VALUE)(cursor_pos + width);
166		74173	index += glyph_len;
167			}
168
169			/* Update insert position. */
170		1866	text_input -> gx_single_line_text_input_insert_pos = new_insert_pos;
171
172		1866	cursor_pos = (GX_VALUE)(x_pos + cursor_pos);
173
174	✓✓	1866	if (cursor_pos < client.gx_rectangle_left + 1)
175			{
176			/* Cursor is beyond widget left, adjust text offset to show cursor. */
177		60	cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = (GX_VALUE)(client.gx_rectangle_left + 1);
178
179		60	distance = (GX_VALUE)(client.gx_rectangle_left + 1 - cursor_pos);
180		60	text_input -> gx_single_line_text_input_xoffset = (GX_VALUE)(text_input -> gx_single_line_text_input_xoffset - distance);
181
182			/* Text offset is modified, mark whole text input area dirty. */
183		60	_gx_system_dirty_mark((GX_WIDGET *)text_input);
184			}
185	✓✓	1806	else if (cursor_pos > client.gx_rectangle_right - 1)
186			{
187			/* Cursor is beyond widget right, adjust text offset to show cursor. */
188		64	cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = (GX_VALUE)(client.gx_rectangle_right - 1);
189
190		64	distance = (GX_VALUE)(cursor_pos - (client.gx_rectangle_right - 1));
191		64	text_input -> gx_single_line_text_input_xoffset = (GX_VALUE)(text_input -> gx_single_line_text_input_xoffset + distance);
192
193			/* Text offset is modified, mark whole text input area dirty. */
194		64	_gx_system_dirty_mark((GX_WIDGET *)text_input);
195			}
196	✓✓	1742	else if (cursor_ptr -> gx_text_input_cursor_pos.gx_point_x != cursor_pos)
197			{
198			/* For this situation, we only need to mark old and new cursor position dirty. */
199		750	client.gx_rectangle_left = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_x - (cursor_ptr -> gx_text_input_cursor_width >> 1));
200		750	client.gx_rectangle_right = (GX_VALUE)(client.gx_rectangle_left + cursor_ptr -> gx_text_input_cursor_width);
201		750	_gx_system_dirty_partial_add((GX_WIDGET *)text_input, &client);
202
203		750	cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = cursor_pos;
204
205		750	client.gx_rectangle_left = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_x - (cursor_ptr -> gx_text_input_cursor_width >> 1));
206		750	client.gx_rectangle_right = (GX_VALUE)(client.gx_rectangle_left + cursor_ptr -> gx_text_input_cursor_width);
207		750	_gx_system_dirty_partial_add((GX_WIDGET *)text_input, &client);
208			}
209
210		1866	return GX_SUCCESS;
211			}
212