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 */ 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_window.h" 29 #include "gx_multi_line_text_input.h" 30 #include "gx_multi_line_text_view.h" 31 #include "gx_text_input_cursor.h" 32 33 /**************************************************************************/ 34 /* */ 35 /* FUNCTION RELEASE */ 36 /* */ 37 /* _gx_multi_line_text_input_end PORTABLE C */ 38 /* 6.1 */ 39 /* AUTHOR */ 40 /* */ 41 /* Kenneth Maxwell, Microsoft Corporation */ 42 /* */ 43 /* DESCRIPTION */ 44 /* */ 45 /* This function deletes a character after the cursor. */ 46 /* */ 47 /* INPUT */ 48 /* */ 49 /* text_input Multi line text input */ 50 /* control block */ 51 /* */ 52 /* OUTPUT */ 53 /* */ 54 /* None */ 55 /* */ 56 /* CALLS */ 57 /* */ 58 /* _gx_multi_line_text_input_cursor_pos_calculate */ 59 /* Calculate cursor position */ 60 /* according to click point */ 61 /* _gx_multi_line_text_input_cursor_rectangle_define */ 62 /* Define a rectangle for the */ 63 /* cursor */ 64 /* _gx_system_dirty_partial_add Add one dirty area to */ 65 /* dirty list */ 66 /* */ 67 /* CALLED BY */ 68 /* */ 69 /* _gx_multi_line_text_input_keydown_process */ 70 /* */ 71 /* RELEASE HISTORY */ 72 /* */ 73 /* DATE NAME DESCRIPTION */ 74 /* */ 75 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ 76 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */ 77 /* resulting in version 6.1 */ 78 /* */ 79 /**************************************************************************/ _gx_multi_line_text_input_end(GX_MULTI_LINE_TEXT_INPUT * text_input)80UINT _gx_multi_line_text_input_end(GX_MULTI_LINE_TEXT_INPUT *text_input) 81 { 82 GX_TEXT_INPUT_CURSOR *cursor_ptr = &text_input -> gx_multi_line_text_input_cursor_instance; 83 GX_POINT cur_pos; 84 GX_RECTANGLE cur_rect; 85 UINT line_end_index; 86 UINT line_cache_start; 87 UINT index; 88 89 if (text_input -> gx_multi_line_text_input_start_mark != text_input -> gx_multi_line_text_input_end_mark) 90 { 91 _gx_multi_line_text_input_right_arrow(text_input); 92 } 93 94 cur_pos = cursor_ptr -> gx_text_input_cursor_pos; 95 96 _gx_text_input_cursor_dirty_rectangle_get(&text_input -> gx_multi_line_text_input_cursor_instance, &cur_rect); 97 98 cur_pos.gx_point_x = (GX_VALUE)(text_input -> gx_window_client.gx_rectangle_right - 99 text_input -> gx_multi_line_text_view_whitespace); 100 101 /* Calculate new cursor position. */ 102 _gx_multi_line_text_input_cursor_pos_calculate(text_input, cur_pos); 103 104 /* Calcualte insert position, consider the situation that there are some whitespaces in the end of 105 cursor line. */ 106 line_cache_start = text_input -> gx_multi_line_text_view_first_cache_line; 107 108 index = text_input -> gx_multi_line_text_input_text_cursor_line - 1; 109 110 if ((INT)(index - line_cache_start) >= (INT)(text_input -> gx_multi_line_text_view_cache_size - 1)) 111 { 112 line_end_index = text_input -> gx_multi_line_text_view_text.gx_string_length; 113 } 114 else 115 { 116 line_end_index = text_input -> gx_multi_line_text_view_line_index[index - line_cache_start + 1]; 117 } 118 text_input -> gx_multi_line_text_input_text_insert_position = line_end_index; 119 120 if (cur_rect.gx_rectangle_left != cursor_ptr -> gx_text_input_cursor_pos.gx_point_x) 121 { 122 /* Mark old cursor rectangle dirty. */ 123 _gx_system_dirty_partial_add((GX_WIDGET *)text_input, &cur_rect); 124 125 /* Mark new cursor rectangle dirty. */ 126 _gx_text_input_cursor_dirty_rectangle_get(&text_input -> gx_multi_line_text_input_cursor_instance, &cur_rect); 127 _gx_system_dirty_partial_add((GX_WIDGET *)text_input, &cur_rect); 128 } 129 130 return GX_SUCCESS; 131 } 132 133
