1 /**************************************************************************/ 2 /* */ 3 /* Copyright (c) Microsoft Corporation. All rights reserved. */ 4 /* */ 5 /* This software is licensed under the Microsoft Software License */ 6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */ 7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */ 8 /* and in the root directory of this software. */ 9 /* */ 10 /**************************************************************************/ 11 12 13 /**************************************************************************/ 14 /**************************************************************************/ 15 /** */ 16 /** GUIX Component */ 17 /** */ 18 /** Multi Line Text Input Management (Multi 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_system.h" 29 #include "gx_window.h" 30 #include "gx_widget.h" 31 #include "gx_scrollbar.h" 32 #include "gx_multi_line_text_input.h" 33 #include "gx_multi_line_text_view.h" 34 #include "gx_text_input_cursor.h" 35 36 /**************************************************************************/ 37 /* */ 38 /* FUNCTION RELEASE */ 39 /* */ 40 /* _gx_multi_line_text_input_up_arrow PORTABLE C */ 41 /* 6.1 */ 42 /* AUTHOR */ 43 /* */ 44 /* Kenneth Maxwell, Microsoft Corporation */ 45 /* */ 46 /* DESCRIPTION */ 47 /* */ 48 /* This function moves highlight text end mark one line up. */ 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_text_input_cursor_dirty_rectangle_get */ 63 /* Get cursor rectangle */ 64 /* _gx_multi_line_text_input_cursor_pos_calculate */ 65 /* Calculate cursor position */ 66 /* according to click index */ 67 /* _gx_system_dirty_partial_add Add one dirty area to */ 68 /* dirty list */ 69 /* _gx_system_dirty_mark Mark widget area dirty */ 70 /* */ 71 /* CALLED BY */ 72 /* */ 73 /* _gx_multi_line_text_input_keydown_process */ 74 /* */ 75 /* RELEASE HISTORY */ 76 /* */ 77 /* DATE NAME DESCRIPTION */ 78 /* */ 79 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ 80 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */ 81 /* resulting in version 6.1 */ 82 /* */ 83 /**************************************************************************/ _gx_multi_line_text_input_mark_up(GX_MULTI_LINE_TEXT_INPUT * text_input)84UINT _gx_multi_line_text_input_mark_up(GX_MULTI_LINE_TEXT_INPUT *text_input) 85 { 86 GX_TEXT_INPUT_CURSOR *cursor_ptr = &text_input -> gx_multi_line_text_input_cursor_instance; 87 GX_VALUE line_height; 88 GX_VALUE half_line_height; 89 GX_POINT cursor_pos; 90 INT shift; 91 GX_RECTANGLE cursor_rect; 92 GX_FONT *font; 93 UINT start_mark = text_input -> gx_multi_line_text_input_start_mark; 94 UINT end_mark = text_input -> gx_multi_line_text_input_end_mark; 95 GX_VALUE width; 96 97 if (start_mark == end_mark) 98 { 99 start_mark = text_input -> gx_multi_line_text_input_text_insert_position; 100 end_mark = text_input -> gx_multi_line_text_input_text_insert_position; 101 102 text_input -> gx_multi_line_text_input_start_mark = start_mark; 103 text_input -> gx_multi_line_text_input_end_mark = end_mark; 104 } 105 106 shift = text_input -> gx_multi_line_text_view_text_scroll_shift; 107 108 _gx_widget_font_get((GX_WIDGET *)text_input, text_input -> gx_multi_line_text_view_font_id, &font); 109 110 if (!font) 111 { 112 return GX_FAILURE; 113 } 114 115 line_height = (GX_VALUE)(font -> gx_font_line_height + text_input -> gx_multi_line_text_view_line_space); 116 117 if (!line_height) 118 { 119 return GX_FAILURE; 120 } 121 122 cursor_pos = cursor_ptr -> gx_text_input_cursor_pos; 123 cursor_pos.gx_point_y = (GX_VALUE)(cursor_pos.gx_point_y - line_height); 124 _gx_multi_line_text_input_cursor_pos_calculate(text_input, cursor_pos); 125 text_input -> gx_multi_line_text_input_end_mark = text_input -> gx_multi_line_text_input_text_insert_position; 126 127 if (shift == text_input -> gx_multi_line_text_view_text_scroll_shift) 128 { 129 _gx_widget_border_width_get((GX_WIDGET *)text_input, &width); 130 _gx_widget_client_get((GX_WIDGET *)text_input, width, &cursor_rect); 131 132 half_line_height = (GX_VALUE)((line_height + 1) >> 1); 133 cursor_rect.gx_rectangle_top = (GX_VALUE)(cursor_pos.gx_point_y - half_line_height); 134 cursor_rect.gx_rectangle_bottom = (GX_VALUE)(cursor_pos.gx_point_y + line_height + half_line_height); 135 136 /* Mark highlight area as dirty. */ 137 _gx_system_dirty_partial_add((GX_WIDGET *)text_input, &cursor_rect); 138 } 139 else 140 { 141 /* Mark widget area dirty. */ 142 _gx_system_dirty_mark((GX_WIDGET *)text_input); 143 } 144 145 return GX_SUCCESS; 146 } 147 148
