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 /** 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_system.h" 29 #include "gx_widget.h" 30 #include "gx_single_line_text_input.h" 31 32 /**************************************************************************/ 33 /* */ 34 /* FUNCTION RELEASE */ 35 /* */ 36 /* _gx_single_line_text_input_position_update PORTABLE C */ 37 /* 6.1 */ 38 /* AUTHOR */ 39 /* */ 40 /* Kenneth Maxwell, Microsoft Corporation */ 41 /* */ 42 /* DESCRIPTION */ 43 /* */ 44 /* This function update the cursor position according to character */ 45 /* insert index. */ 46 /* */ 47 /* INPUT */ 48 /* */ 49 /* text_input Single-line text input widget */ 50 /* control block */ 51 /* */ 52 /* OUTPUT */ 53 /* */ 54 /* Complete status */ 55 /* */ 56 /* CALLS */ 57 /* */ 58 /* _gx_widget_font_get Get font by specified ID */ 59 /* _gx_widget_border_width_get Get widget border width */ 60 /* _gx_widget_client_get Get widget client rectangle */ 61 /* _gx_system_string_width_get Get the width of a string */ 62 /* */ 63 /* CALLED BY */ 64 /* */ 65 /* Application Code */ 66 /* GUIX Internal Code */ 67 /* */ 68 /* RELEASE HISTORY */ 69 /* */ 70 /* DATE NAME DESCRIPTION */ 71 /* */ 72 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ 73 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */ 74 /* resulting in version 6.1 */ 75 /* */ 76 /**************************************************************************/ _gx_single_line_text_input_position_update(GX_SINGLE_LINE_TEXT_INPUT * text_input)77UINT _gx_single_line_text_input_position_update(GX_SINGLE_LINE_TEXT_INPUT *text_input) 78 { 79 GX_TEXT_INPUT_CURSOR *cursor_ptr; 80 UINT insert_pos; 81 GX_FONT *gx_font; 82 GX_RECTANGLE client; 83 GX_VALUE width; 84 GX_VALUE x_pos; 85 GX_STRING string; 86 87 cursor_ptr = &text_input -> gx_single_line_text_input_cursor_instance; 88 insert_pos = text_input -> gx_single_line_text_input_insert_pos; 89 90 _gx_widget_font_get((GX_WIDGET *)text_input, text_input -> gx_prompt_font_id, &gx_font); 91 _gx_widget_border_width_get((GX_WIDGET *)text_input, &width); 92 _gx_widget_client_get((GX_WIDGET *)text_input, width, &client); 93 94 /* Calculate distance from first character to character insert position. */ 95 string.gx_string_ptr = text_input -> gx_single_line_text_input_buffer; 96 string.gx_string_length = insert_pos; 97 _gx_system_string_width_get_ext(gx_font, &string, &width); 98 99 switch (text_input -> gx_widget_style & GX_STYLE_TEXT_ALIGNMENT_MASK) 100 { 101 case GX_STYLE_TEXT_RIGHT: 102 x_pos = (GX_VALUE)(client.gx_rectangle_right - 1); 103 break; 104 105 case GX_STYLE_TEXT_CENTER: 106 x_pos = client.gx_rectangle_left; 107 x_pos = (GX_VALUE)(x_pos + 1 + ((client.gx_rectangle_right - client.gx_rectangle_left + 1) >> 1)); 108 break; 109 110 case GX_STYLE_TEXT_LEFT: 111 default: 112 x_pos = (GX_VALUE)(client.gx_rectangle_left + 1); 113 break; 114 } 115 116 /* Pick up draw start position. */ 117 x_pos = (GX_VALUE)(x_pos - text_input -> gx_single_line_text_input_xoffset); 118 119 /* Update cursor position. */ 120 cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = (GX_VALUE)(x_pos + width); 121 122 return GX_SUCCESS; 123 } 124 125
