Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	gx_single_line_text_input_character_delete.c	Lines:	72	72	100.0 %
Date:	2024-12-05 08:52:37	Branches:	25	25	100.0 %


/***************************************************************************
 * Copyright (c) 2024 Microsoft Corporation
 *
 * 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_system.h"
#include "gx_widget.h"
#include "gx_single_line_text_input.h"
#include "gx_utility.h"

/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _gx_single_line_text_input_character_delete         PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Kenneth Maxwell, Microsoft Corporation                              */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This service deletes the character after the text input cursor      */
/*    position.                                                           */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    text_input                             Single line text input       */
/*                                            control blcok               */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    None                                                                */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    memmove                               Move a block of memory        */
/*    _gx_widget_border_width_get           Get widget border width       */
/*    _gx_widget_client_get                 Get widget client rectangle   */
/*    _gx_widget_font_get                   Get font by specified ID      */
/*    _gx_system_string_width_get           Get the width of a string     */
/*    _gx_system_dirty_partial_add          Mark the partial area of a    */
/*                                            widget as dirty             */
/*    _gx_utility_utf8_string_character_get Parse utf8 string to          */
/*                                            multi-byte glyph            */
/*    _gx_single_line_text_input_position_update                          */
/*                                          Update cursor position        */
/*                                            according to insert position*/
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    Application Code                                                    */
/*    GUIX Internal Code                                                  */
/*                                                                        */
/*  RELEASE HISTORY                                                       */
/*                                                                        */
/*    DATE              NAME                      DESCRIPTION             */
/*                                                                        */
/*  05-19-2020     Kenneth Maxwell          Initial Version 6.0           */
/*  09-30-2020     Kenneth Maxwell          Modified comment(s),          */
/*                                            resulting in version 6.1    */
/*                                                                        */
/**************************************************************************/
UINT _gx_single_line_text_input_character_delete(GX_SINGLE_LINE_TEXT_INPUT *text_input)
{
GX_TEXT_INPUT_CURSOR *cursor_ptr = &text_input -> gx_single_line_text_input_cursor_instance;
UINT                  insert_pos;
GX_CHAR              *string_buffer;
UINT                  string_size;
GX_VALUE              border_width;
GX_VALUE              text_width;
GX_RECTANGLE          client;
GX_RECTANGLE          dirty_area;
GX_FONT              *gx_font;
GX_VALUE              x_pos;
GX_VALUE              offset;
GX_VALUE              del_char_width;
UINT                  glyph_len = 1;

GX_STRING             string;

    if (text_input -> gx_single_line_text_input_end_mark > text_input -> gx_single_line_text_input_start_mark)
    {
        return _gx_single_line_text_input_backspace(text_input);
    }

    insert_pos = text_input -> gx_single_line_text_input_insert_pos;
    string_buffer = text_input -> gx_single_line_text_input_buffer;
    string_size = text_input -> gx_single_line_text_input_string_size;

    if (insert_pos < string_size)
    {
        _gx_widget_border_width_get((GX_WIDGET *)text_input, &border_width);
        _gx_widget_client_get((GX_WIDGET *)text_input, border_width, &client);

        if (text_input -> gx_single_line_text_input_start_mark != text_input -> gx_single_line_text_input_end_mark)
        {
            glyph_len = text_input -> gx_single_line_text_input_start_mark - text_input -> gx_single_line_text_input_end_mark;

            if (cursor_ptr -> gx_text_input_cursor_pos.gx_point_x <= client.gx_rectangle_left ||
                cursor_ptr -> gx_text_input_cursor_pos.gx_point_x >= client.gx_rectangle_right)
            {
                _gx_single_line_text_input_left_arrow(text_input);
            }
            text_input -> gx_single_line_text_input_start_mark = 0;
            text_input -> gx_single_line_text_input_end_mark = 0;
        }
#ifdef GX_UTF8_SUPPORT
        else
        {
            string.gx_string_ptr = string_buffer + insert_pos;
            string.gx_string_length = string_size - insert_pos;

            _gx_utility_utf8_string_character_get(&string, GX_NULL, &glyph_len);
        }
#endif
        dirty_area = client;

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

        /* Pick up text witth. */
        string.gx_string_ptr = string_buffer;
        string.gx_string_length = text_input -> gx_single_line_text_input_string_size;

        _gx_system_string_width_get_ext(gx_font, &string, &text_width);

        string.gx_string_ptr = string_buffer + insert_pos;
        string.gx_string_length = glyph_len;

        _gx_system_string_width_get_ext(gx_font, &string, &del_char_width);

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

            if (x_pos + text_width > client.gx_rectangle_right - 1)
            {
                offset = (GX_VALUE)((x_pos + text_width - del_char_width) - (client.gx_rectangle_right - 1));

                if (offset < 0)
                {
                    text_input -> gx_single_line_text_input_xoffset = (GX_VALUE)(text_input -> gx_single_line_text_input_xoffset + offset);
                    cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_x - offset);
                }
            }
            else
            {
                text_input -> gx_single_line_text_input_xoffset = (GX_VALUE)(text_input -> gx_single_line_text_input_xoffset - del_char_width);
                cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_x + del_char_width);

                dirty_area.gx_rectangle_right = cursor_ptr -> gx_text_input_cursor_pos.gx_point_x;
            }
            break;

        case GX_STYLE_TEXT_CENTER:
            x_pos = (GX_VALUE)(client.gx_rectangle_left + 1);
            x_pos = (GX_VALUE)(x_pos + ((client.gx_rectangle_right - client.gx_rectangle_left + 1) >> 1));
            x_pos = (GX_VALUE)(x_pos - text_input -> gx_single_line_text_input_xoffset);
            if (text_width <= (client.gx_rectangle_right - client.gx_rectangle_left + 1 - border_width))
            {
                dirty_area.gx_rectangle_left = (GX_VALUE)(x_pos - (cursor_ptr -> gx_text_input_cursor_width >> 1));
                dirty_area.gx_rectangle_right = (GX_VALUE)(x_pos + text_width + ((cursor_ptr -> gx_text_input_cursor_width + 1) >> 1) - 1);
            }
            /* Calculate the cursor position. */
            text_input -> gx_single_line_text_input_xoffset = (GX_VALUE)((text_width - del_char_width + 1) >> 1);
            cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_x +
                                                                           (((text_width + 1) >> 1) - text_input -> gx_single_line_text_input_xoffset));
            break;

        case GX_STYLE_TEXT_LEFT:
        default:
            x_pos = (GX_VALUE)(client.gx_rectangle_left + 1);
            x_pos = (GX_VALUE)(x_pos - text_input -> gx_single_line_text_input_xoffset);

            if (x_pos < client.gx_rectangle_left + 1)
            {
                offset = (GX_VALUE)((client.gx_rectangle_right - 1) - (x_pos + text_width - del_char_width));

                if (offset > 0)
                {
                    if (offset > (client.gx_rectangle_left + 1 - x_pos))
                    {
                        offset = (GX_VALUE)(client.gx_rectangle_left + 1 - x_pos);
                    }

                    text_input -> gx_single_line_text_input_xoffset = (GX_VALUE)(text_input -> gx_single_line_text_input_xoffset - offset);
                    cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_x + offset);
                }
            }
            else
            {
                dirty_area.gx_rectangle_left = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_x - (cursor_ptr -> gx_text_input_cursor_width >> 1));
                dirty_area.gx_rectangle_right = (GX_VALUE)(x_pos + text_width + cursor_ptr -> gx_text_input_cursor_width - 1);
            }
            break;
        }


        /* Delete a character from the string buffer. */
        memmove(string_buffer + insert_pos, string_buffer + insert_pos + glyph_len, string_size - insert_pos - glyph_len);

        string_buffer[string_size - glyph_len] = '\0';
        text_input -> gx_single_line_text_input_string_size -= glyph_len;

        /* Mark text input be changed.  */
        text_input -> gx_single_line_text_input_was_modified = GX_TRUE;

        _gx_system_dirty_partial_add((GX_WIDGET *)text_input, &dirty_area);
    }

    return GX_SUCCESS;
}



Generated by: GCOVR (Version 4.1)

Line	Branch	Exec	Source
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			#include "gx_utility.h"
31
32			/**************************************************************************/
33			/* */
34			/* FUNCTION RELEASE */
35			/* */
36			/* _gx_single_line_text_input_character_delete PORTABLE C */
37			/* 6.1 */
38			/* AUTHOR */
39			/* */
40			/* Kenneth Maxwell, Microsoft Corporation */
41			/* */
42			/* DESCRIPTION */
43			/* */
44			/* This service deletes the character after the text input cursor */
45			/* position. */
46			/* */
47			/* INPUT */
48			/* */
49			/* text_input Single line text input */
50			/* control blcok */
51			/* */
52			/* OUTPUT */
53			/* */
54			/* None */
55			/* */
56			/* CALLS */
57			/* */
58			/* memmove Move a block of memory */
59			/* _gx_widget_border_width_get Get widget border width */
60			/* _gx_widget_client_get Get widget client rectangle */
61			/* _gx_widget_font_get Get font by specified ID */
62			/* _gx_system_string_width_get Get the width of a string */
63			/* _gx_system_dirty_partial_add Mark the partial area of a */
64			/* widget as dirty */
65			/* _gx_utility_utf8_string_character_get Parse utf8 string to */
66			/* multi-byte glyph */
67			/* _gx_single_line_text_input_position_update */
68			/* Update cursor position */
69			/* according to insert position*/
70			/* */
71			/* CALLED BY */
72			/* */
73			/* Application Code */
74			/* GUIX Internal Code */
75			/* */
76			/* RELEASE HISTORY */
77			/* */
78			/* DATE NAME DESCRIPTION */
79			/* */
80			/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
81			/* 09-30-2020 Kenneth Maxwell Modified comment(s), */
82			/* resulting in version 6.1 */
83			/* */
84			/**************************************************************************/
85		586	UINT _gx_single_line_text_input_character_delete(GX_SINGLE_LINE_TEXT_INPUT *text_input)
86			{
87		586	GX_TEXT_INPUT_CURSOR *cursor_ptr = &text_input -> gx_single_line_text_input_cursor_instance;
88			UINT insert_pos;
89			GX_CHAR *string_buffer;
90			UINT string_size;
91			GX_VALUE border_width;
92			GX_VALUE text_width;
93			GX_RECTANGLE client;
94			GX_RECTANGLE dirty_area;
95			GX_FONT *gx_font;
96			GX_VALUE x_pos;
97			GX_VALUE offset;
98			GX_VALUE del_char_width;
99		586	UINT glyph_len = 1;
100
101			GX_STRING string;
102
103	✓✓	586	if (text_input -> gx_single_line_text_input_end_mark > text_input -> gx_single_line_text_input_start_mark)
104			{
105		18	return _gx_single_line_text_input_backspace(text_input);
106			}
107
108		568	insert_pos = text_input -> gx_single_line_text_input_insert_pos;
109		568	string_buffer = text_input -> gx_single_line_text_input_buffer;
110		568	string_size = text_input -> gx_single_line_text_input_string_size;
111
112	✓✓	568	if (insert_pos < string_size)
113			{
114		542	_gx_widget_border_width_get((GX_WIDGET *)text_input, &border_width);
115		542	_gx_widget_client_get((GX_WIDGET *)text_input, border_width, &client);
116
117	✓✓	542	if (text_input -> gx_single_line_text_input_start_mark != text_input -> gx_single_line_text_input_end_mark)
118			{
119		47	glyph_len = text_input -> gx_single_line_text_input_start_mark - text_input -> gx_single_line_text_input_end_mark;
120
121	✓✓	47	if (cursor_ptr -> gx_text_input_cursor_pos.gx_point_x <= client.gx_rectangle_left \|\|
122	✓✓	29	cursor_ptr -> gx_text_input_cursor_pos.gx_point_x >= client.gx_rectangle_right)
123			{
124		24	_gx_single_line_text_input_left_arrow(text_input);
125			}
126		47	text_input -> gx_single_line_text_input_start_mark = 0;
127		47	text_input -> gx_single_line_text_input_end_mark = 0;
128			}
129			#ifdef GX_UTF8_SUPPORT
130			else
131			{
132		495	string.gx_string_ptr = string_buffer + insert_pos;
133		495	string.gx_string_length = string_size - insert_pos;
134
135		495	_gx_utility_utf8_string_character_get(&string, GX_NULL, &glyph_len);
136			}
137			#endif
138		542	dirty_area = client;
139
140		542	_gx_widget_font_get((GX_WIDGET *)text_input, text_input -> gx_prompt_font_id, &gx_font);
141
142			/* Pick up text witth. */
143		542	string.gx_string_ptr = string_buffer;
144		542	string.gx_string_length = text_input -> gx_single_line_text_input_string_size;
145
146		542	_gx_system_string_width_get_ext(gx_font, &string, &text_width);
147
148		542	string.gx_string_ptr = string_buffer + insert_pos;
149		542	string.gx_string_length = glyph_len;
150
151		542	_gx_system_string_width_get_ext(gx_font, &string, &del_char_width);
152
153	✓✓✓	542	switch (text_input -> gx_widget_style & GX_STYLE_TEXT_ALIGNMENT_MASK)
154			{
155		138	case GX_STYLE_TEXT_RIGHT:
156		138	x_pos = (GX_VALUE)(client.gx_rectangle_right - 1);
157		138	x_pos = (GX_VALUE)(x_pos - text_input -> gx_single_line_text_input_xoffset);
158
159	✓✓	138	if (x_pos + text_width > client.gx_rectangle_right - 1)
160			{
161		105	offset = (GX_VALUE)((x_pos + text_width - del_char_width) - (client.gx_rectangle_right - 1));
162
163	✓✓	105	if (offset < 0)
164			{
165		7	text_input -> gx_single_line_text_input_xoffset = (GX_VALUE)(text_input -> gx_single_line_text_input_xoffset + offset);
166		7	cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_x - offset);
167			}
168			}
169			else
170			{
171		33	text_input -> gx_single_line_text_input_xoffset = (GX_VALUE)(text_input -> gx_single_line_text_input_xoffset - del_char_width);
172		33	cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_x + del_char_width);
173
174		33	dirty_area.gx_rectangle_right = cursor_ptr -> gx_text_input_cursor_pos.gx_point_x;
175			}
176		138	break;
177
178		135	case GX_STYLE_TEXT_CENTER:
179		135	x_pos = (GX_VALUE)(client.gx_rectangle_left + 1);
180		135	x_pos = (GX_VALUE)(x_pos + ((client.gx_rectangle_right - client.gx_rectangle_left + 1) >> 1));
181		135	x_pos = (GX_VALUE)(x_pos - text_input -> gx_single_line_text_input_xoffset);
182	✓✓	135	if (text_width <= (client.gx_rectangle_right - client.gx_rectangle_left + 1 - border_width))
183			{
184		25	dirty_area.gx_rectangle_left = (GX_VALUE)(x_pos - (cursor_ptr -> gx_text_input_cursor_width >> 1));
185		25	dirty_area.gx_rectangle_right = (GX_VALUE)(x_pos + text_width + ((cursor_ptr -> gx_text_input_cursor_width + 1) >> 1) - 1);
186			}
187			/* Calculate the cursor position. */
188		135	text_input -> gx_single_line_text_input_xoffset = (GX_VALUE)((text_width - del_char_width + 1) >> 1);
189		135	cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_x +
190		135	(((text_width + 1) >> 1) - text_input -> gx_single_line_text_input_xoffset));
191		135	break;
192
193		269	case GX_STYLE_TEXT_LEFT:
194			default:
195		269	x_pos = (GX_VALUE)(client.gx_rectangle_left + 1);
196		269	x_pos = (GX_VALUE)(x_pos - text_input -> gx_single_line_text_input_xoffset);
197
198	✓✓	269	if (x_pos < client.gx_rectangle_left + 1)
199			{
200		34	offset = (GX_VALUE)((client.gx_rectangle_right - 1) - (x_pos + text_width - del_char_width));
201
202	✓✓	34	if (offset > 0)
203			{
204	✓✓	18	if (offset > (client.gx_rectangle_left + 1 - x_pos))
205			{
206		6	offset = (GX_VALUE)(client.gx_rectangle_left + 1 - x_pos);
207			}
208
209		18	text_input -> gx_single_line_text_input_xoffset = (GX_VALUE)(text_input -> gx_single_line_text_input_xoffset - offset);
210		18	cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_x + offset);
211			}
212			}
213			else
214			{
215		235	dirty_area.gx_rectangle_left = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_x - (cursor_ptr -> gx_text_input_cursor_width >> 1));
216		235	dirty_area.gx_rectangle_right = (GX_VALUE)(x_pos + text_width + cursor_ptr -> gx_text_input_cursor_width - 1);
217			}
218		269	break;
219			}
220
221
222			/* Delete a character from the string buffer. */
223		542	memmove(string_buffer + insert_pos, string_buffer + insert_pos + glyph_len, string_size - insert_pos - glyph_len);
224
225		542	string_buffer[string_size - glyph_len] = '\0';
226		542	text_input -> gx_single_line_text_input_string_size -= glyph_len;
227
228			/* Mark text input be changed. */
229		542	text_input -> gx_single_line_text_input_was_modified = GX_TRUE;
230
231		542	_gx_system_dirty_partial_add((GX_WIDGET *)text_input, &dirty_area);
232			}
233
234		568	return GX_SUCCESS;
235			}
236