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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	gx_multi_line_text_input_delete.c	Lines:	55	55	100.0 %
Date:	2024-12-05 08:52:37	Branches:	26	26	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                                                        */
/**                                                                       */
/**   Multi Line Text Input Management (Multi 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_window.h"
#include "gx_utility.h"
#include "gx_multi_line_text_input.h"
#include "gx_multi_line_text_view.h"
#include "gx_utility.h"
#include "gx_scrollbar.h"

/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _gx_multi_line_text_input_delete                    PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Kenneth Maxwell, Microsoft Corporation                              */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function deletes a character after the cursor.                 */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    text_input                        Multi line text input             */
/*                                        control block                   */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    None                                                                */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    _gx_widget_font_get                   Retrieve font                 */
/*    _gx_window_client_width_get           Get the client width          */
/*    _gx_window_scrollbar_find             Find scrollbar for a window   */
/*    _gx_scrollbar_reset                   Reset scrollbar information   */
/*    _gx_multi_line_text_input_char_remove Remove characters from input  */
/*                                            string                      */
/*    _gx_multi_line_text_view_display_info_get                           */
/*                                          Get the number of characters  */
/*                                            that a line can display     */
/*    _gx_multi_line_text_view_string_total_rows_compute                  */
/*                                          Calculate total rows of input */
/*                                            string                      */
/*    _gx_multi_line_text_view_line_cache_update                          */
/*                                          Update line cache             */
/*    _gx_multi_line_text_input_cursor_pos_update                         */
/*                                          Update cursor position        */
/*                                            according to insert position*/
/*    _gx_system_dirty_partial_add          Add one dirty area to dirty   */
/*                                            list                        */
/*    _gx_utility_utf8_string_character_get Parses utf8 string to         */
/*                                            multi-byte glyph            */
/*    _gx_utility_string_length_check       Test string length            */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    _gx_multi_line_text_input_keydown_process                           */
/*                                                                        */
/*  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_multi_line_text_input_delete(GX_MULTI_LINE_TEXT_INPUT *text_input)
{
GX_TEXT_INPUT_CURSOR    *cursor_ptr = &text_input -> gx_multi_line_text_input_cursor_instance;
GX_MULTI_LINE_TEXT_VIEW *view = (GX_MULTI_LINE_TEXT_VIEW *)text_input;
UINT                     insert_pos;
UINT                     string_size;
GX_RECTANGLE             client;
GX_RECTANGLE             dirty_rect;
GX_FONT                 *font;
GX_VALUE                 line_height;
UINT                     old_text_rows;
INT                      shift;
INT                      last_visible_line;
UINT                     glyph_len = 1;
GX_SCROLLBAR            *scroll;
GX_STRING                string;
UINT                     start_mark = text_input -> gx_multi_line_text_input_start_mark;
UINT                     end_mark = text_input -> gx_multi_line_text_input_end_mark;

    if (end_mark > start_mark)
    {
        return _gx_multi_line_text_input_backspace(text_input);
    }

    insert_pos =  text_input -> gx_multi_line_text_input_text_insert_position;
    string_size = text_input -> gx_multi_line_text_view_text.gx_string_length;
    if (insert_pos < string_size)
    {
        /* Pickup text font.  */
        _gx_widget_font_get((GX_WIDGET *)text_input, text_input -> gx_multi_line_text_view_font_id, &font);

        if (!font)
        {
            return GX_FAILURE;
        }

        if (start_mark != end_mark)
        {
            glyph_len = (UINT)GX_ABS((INT)start_mark - (INT)end_mark);
            text_input -> gx_multi_line_text_input_start_mark = 0;
            text_input -> gx_multi_line_text_input_end_mark = 0;
        }
        else
        {
#ifdef GX_UTF8_SUPPORT
            string.gx_string_ptr = text_input -> gx_multi_line_text_view_text.gx_string_ptr + insert_pos;
            string.gx_string_length = text_input -> gx_multi_line_text_view_text.gx_string_length - insert_pos;
            _gx_utility_utf8_string_character_get(&string, GX_NULL, &glyph_len);
#endif

            string.gx_string_ptr = text_input -> gx_multi_line_text_view_text.gx_string_ptr + insert_pos;
            if (string.gx_string_ptr[0] == GX_KEY_CARRIAGE_RETURN || string.gx_string_ptr[0] == GX_KEY_LINE_FEED)
            {
                glyph_len = text_input -> gx_multi_line_text_input_new_line_character_size;
            }
        }

        /* Get scroll shift. */
        shift = (GX_VALUE)(text_input -> gx_multi_line_text_view_text_scroll_shift);

        /* Remove character after cursor.  */
        _gx_multi_line_text_input_char_remove(text_input, insert_pos, glyph_len);

        /* Save old text rows.  */
        old_text_rows = text_input -> gx_multi_line_text_view_text_total_rows;

        /* Calculate new text rows.  */
        _gx_multi_line_text_view_string_total_rows_compute((GX_MULTI_LINE_TEXT_VIEW *)text_input);

        if (old_text_rows != text_input -> gx_multi_line_text_view_text_total_rows)
        {
            _gx_window_scrollbar_find((GX_WINDOW *)text_input, GX_TYPE_VERTICAL_SCROLL, &scroll);
            if (scroll)
            {
                /* Reset scrollbar.  */
                _gx_scrollbar_reset(scroll, GX_NULL);
            }
            else
            {

                if (text_input -> gx_multi_line_text_view_text_total_rows >
                    text_input -> gx_multi_line_text_view_cache_size)
                {
                    _gx_multi_line_text_view_line_cache_update((GX_MULTI_LINE_TEXT_VIEW *)text_input);
                }
            }
        }

        /* Recalculate cursor position. */
        _gx_multi_line_text_input_cursor_pos_update(text_input, GX_TRUE);

        if (shift == text_input -> gx_multi_line_text_view_text_scroll_shift)
        {
            /* Get text height. */
            line_height = (GX_VALUE)(font -> gx_font_line_height +
                                     text_input -> gx_multi_line_text_view_line_space);

            if (line_height)
            {
                client = text_input -> gx_window_client;

                /* Offset client area by length of whitespace.  */
                _gx_utility_rectangle_resize(&client, (GX_VALUE)(-text_input -> gx_multi_line_text_view_whitespace));

                dirty_rect = client;

                /* Calculate dirty area. */
                dirty_rect.gx_rectangle_top = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_y - line_height - (line_height >> 1));

                /* Calculate last visible line. */
                last_visible_line = (-text_input -> gx_multi_line_text_view_text_scroll_shift) / line_height;
                last_visible_line = last_visible_line + (INT)view -> gx_multi_line_text_view_text_visible_rows + 1;

                if (last_visible_line > (INT)text_input -> gx_multi_line_text_view_text_total_rows)
                {
                    last_visible_line = (INT)text_input -> gx_multi_line_text_view_text_total_rows;
                }

                shift = (last_visible_line + (INT)old_text_rows - (INT)text_input -> gx_multi_line_text_view_text_total_rows) * line_height + shift;
                shift += client.gx_rectangle_top;

                if (shift < dirty_rect.gx_rectangle_bottom)
                {
                    dirty_rect.gx_rectangle_bottom = (GX_VALUE)shift;
                }

                _gx_system_dirty_partial_add((GX_WIDGET *)text_input, &dirty_rect);
            }
        }
        else
        {
            _gx_system_dirty_mark((GX_WIDGET *)text_input);
        }
    }

    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			/** Multi Line 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_window.h"
30			#include "gx_utility.h"
31			#include "gx_multi_line_text_input.h"
32			#include "gx_multi_line_text_view.h"
33			#include "gx_utility.h"
34			#include "gx_scrollbar.h"
35
36			/**************************************************************************/
37			/* */
38			/* FUNCTION RELEASE */
39			/* */
40			/* _gx_multi_line_text_input_delete PORTABLE C */
41			/* 6.1 */
42			/* AUTHOR */
43			/* */
44			/* Kenneth Maxwell, Microsoft Corporation */
45			/* */
46			/* DESCRIPTION */
47			/* */
48			/* This function deletes a character after the cursor. */
49			/* */
50			/* INPUT */
51			/* */
52			/* text_input Multi line text input */
53			/* control block */
54			/* */
55			/* OUTPUT */
56			/* */
57			/* None */
58			/* */
59			/* CALLS */
60			/* */
61			/* _gx_widget_font_get Retrieve font */
62			/* _gx_window_client_width_get Get the client width */
63			/* _gx_window_scrollbar_find Find scrollbar for a window */
64			/* _gx_scrollbar_reset Reset scrollbar information */
65			/* _gx_multi_line_text_input_char_remove Remove characters from input */
66			/* string */
67			/* _gx_multi_line_text_view_display_info_get */
68			/* Get the number of characters */
69			/* that a line can display */
70			/* _gx_multi_line_text_view_string_total_rows_compute */
71			/* Calculate total rows of input */
72			/* string */
73			/* _gx_multi_line_text_view_line_cache_update */
74			/* Update line cache */
75			/* _gx_multi_line_text_input_cursor_pos_update */
76			/* Update cursor position */
77			/* according to insert position*/
78			/* _gx_system_dirty_partial_add Add one dirty area to dirty */
79			/* list */
80			/* _gx_utility_utf8_string_character_get Parses utf8 string to */
81			/* multi-byte glyph */
82			/* _gx_utility_string_length_check Test string length */
83			/* */
84			/* CALLED BY */
85			/* */
86			/* _gx_multi_line_text_input_keydown_process */
87			/* */
88			/* RELEASE HISTORY */
89			/* */
90			/* DATE NAME DESCRIPTION */
91			/* */
92			/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
93			/* 09-30-2020 Kenneth Maxwell Modified comment(s), */
94			/* resulting in version 6.1 */
95			/* */
96			/**************************************************************************/
97		440	UINT _gx_multi_line_text_input_delete(GX_MULTI_LINE_TEXT_INPUT *text_input)
98			{
99		440	GX_TEXT_INPUT_CURSOR *cursor_ptr = &text_input -> gx_multi_line_text_input_cursor_instance;
100		440	GX_MULTI_LINE_TEXT_VIEW view = (GX_MULTI_LINE_TEXT_VIEW )text_input;
101			UINT insert_pos;
102			UINT string_size;
103			GX_RECTANGLE client;
104			GX_RECTANGLE dirty_rect;
105			GX_FONT *font;
106			GX_VALUE line_height;
107			UINT old_text_rows;
108			INT shift;
109			INT last_visible_line;
110		440	UINT glyph_len = 1;
111			GX_SCROLLBAR *scroll;
112			GX_STRING string;
113		440	UINT start_mark = text_input -> gx_multi_line_text_input_start_mark;
114		440	UINT end_mark = text_input -> gx_multi_line_text_input_end_mark;
115
116	✓✓	440	if (end_mark > start_mark)
117			{
118		36	return _gx_multi_line_text_input_backspace(text_input);
119			}
120
121		404	insert_pos = text_input -> gx_multi_line_text_input_text_insert_position;
122		404	string_size = text_input -> gx_multi_line_text_view_text.gx_string_length;
123	✓✓	404	if (insert_pos < string_size)
124			{
125			/* Pickup text font. */
126		403	_gx_widget_font_get((GX_WIDGET *)text_input, text_input -> gx_multi_line_text_view_font_id, &font);
127
128	✓✓	403	if (!font)
129			{
130		2	return GX_FAILURE;
131			}
132
133	✓✓	401	if (start_mark != end_mark)
134			{
135		170	glyph_len = (UINT)GX_ABS((INT)start_mark - (INT)end_mark);
136		170	text_input -> gx_multi_line_text_input_start_mark = 0;
137		170	text_input -> gx_multi_line_text_input_end_mark = 0;
138			}
139			else
140			{
141			#ifdef GX_UTF8_SUPPORT
142		231	string.gx_string_ptr = text_input -> gx_multi_line_text_view_text.gx_string_ptr + insert_pos;
143		231	string.gx_string_length = text_input -> gx_multi_line_text_view_text.gx_string_length - insert_pos;
144		231	_gx_utility_utf8_string_character_get(&string, GX_NULL, &glyph_len);
145			#endif
146
147		231	string.gx_string_ptr = text_input -> gx_multi_line_text_view_text.gx_string_ptr + insert_pos;
148	✓✓✓✓	231	if (string.gx_string_ptr[0] == GX_KEY_CARRIAGE_RETURN \|\| string.gx_string_ptr[0] == GX_KEY_LINE_FEED)
149			{
150		126	glyph_len = text_input -> gx_multi_line_text_input_new_line_character_size;
151			}
152			}
153
154			/* Get scroll shift. */
155		401	shift = (GX_VALUE)(text_input -> gx_multi_line_text_view_text_scroll_shift);
156
157			/* Remove character after cursor. */
158		401	_gx_multi_line_text_input_char_remove(text_input, insert_pos, glyph_len);
159
160			/* Save old text rows. */
161		401	old_text_rows = text_input -> gx_multi_line_text_view_text_total_rows;
162
163			/* Calculate new text rows. */
164		401	_gx_multi_line_text_view_string_total_rows_compute((GX_MULTI_LINE_TEXT_VIEW *)text_input);
165
166	✓✓	401	if (old_text_rows != text_input -> gx_multi_line_text_view_text_total_rows)
167			{
168		277	_gx_window_scrollbar_find((GX_WINDOW *)text_input, GX_TYPE_VERTICAL_SCROLL, &scroll);
169	✓✓	277	if (scroll)
170			{
171			/* Reset scrollbar. */
172		156	_gx_scrollbar_reset(scroll, GX_NULL);
173			}
174			else
175			{
176
177		121	if (text_input -> gx_multi_line_text_view_text_total_rows >
178	✓✓	121	text_input -> gx_multi_line_text_view_cache_size)
179			{
180		1	_gx_multi_line_text_view_line_cache_update((GX_MULTI_LINE_TEXT_VIEW *)text_input);
181			}
182			}
183			}
184
185			/* Recalculate cursor position. */
186		401	_gx_multi_line_text_input_cursor_pos_update(text_input, GX_TRUE);
187
188	✓✓	401	if (shift == text_input -> gx_multi_line_text_view_text_scroll_shift)
189			{
190			/* Get text height. */
191		271	line_height = (GX_VALUE)(font -> gx_font_line_height +
192		271	text_input -> gx_multi_line_text_view_line_space);
193
194	✓✓	271	if (line_height)
195			{
196		270	client = text_input -> gx_window_client;
197
198			/* Offset client area by length of whitespace. */
199		270	_gx_utility_rectangle_resize(&client, (GX_VALUE)(-text_input -> gx_multi_line_text_view_whitespace));
200
201		270	dirty_rect = client;
202
203			/* Calculate dirty area. */
204		270	dirty_rect.gx_rectangle_top = (GX_VALUE)(cursor_ptr -> gx_text_input_cursor_pos.gx_point_y - line_height - (line_height >> 1));
205
206			/* Calculate last visible line. */
207		270	last_visible_line = (-text_input -> gx_multi_line_text_view_text_scroll_shift) / line_height;
208		270	last_visible_line = last_visible_line + (INT)view -> gx_multi_line_text_view_text_visible_rows + 1;
209
210	✓✓	270	if (last_visible_line > (INT)text_input -> gx_multi_line_text_view_text_total_rows)
211			{
212		188	last_visible_line = (INT)text_input -> gx_multi_line_text_view_text_total_rows;
213			}
214
215		270	shift = (last_visible_line + (INT)old_text_rows - (INT)text_input -> gx_multi_line_text_view_text_total_rows) * line_height + shift;
216		270	shift += client.gx_rectangle_top;
217
218	✓✓	270	if (shift < dirty_rect.gx_rectangle_bottom)
219			{
220		147	dirty_rect.gx_rectangle_bottom = (GX_VALUE)shift;
221			}
222
223		270	_gx_system_dirty_partial_add((GX_WIDGET *)text_input, &dirty_rect);
224			}
225			}
226			else
227			{
228		130	_gx_system_dirty_mark((GX_WIDGET *)text_input);
229			}
230			}
231
232		402	return GX_SUCCESS;
233			}
234