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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** GUIX Component */ |
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/** */ |
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/** Text Input Management (Single Line Text Input) */ |
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/** */ |
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/**************************************************************************/ |
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#define GX_SOURCE_CODE |
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/* Include necessary system files. */ |
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#include "gx_api.h" |
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#include "gx_system.h" |
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#include "gx_widget.h" |
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#include "gx_single_line_text_input.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_single_line_text_input_position_update PORTABLE C */ |
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/* 6.1 */ |
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/* AUTHOR */ |
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/* */ |
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/* Kenneth Maxwell, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function update the cursor position according to character */ |
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/* insert index. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* text_input Single-line text input widget */ |
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/* control block */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* Complete status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _gx_widget_font_get Get font by specified ID */ |
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/* _gx_widget_border_width_get Get widget border width */ |
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/* _gx_widget_client_get Get widget client rectangle */ |
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/* _gx_system_string_width_get Get the width of a string */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application Code */ |
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/* GUIX Internal Code */ |
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/* */ |
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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ |
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/* 09-30-2020 Kenneth Maxwell Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* */ |
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/**************************************************************************/ |
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UINT _gx_single_line_text_input_position_update(GX_SINGLE_LINE_TEXT_INPUT *text_input) |
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{ |
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GX_TEXT_INPUT_CURSOR *cursor_ptr; |
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UINT insert_pos; |
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GX_FONT *gx_font; |
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GX_RECTANGLE client; |
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GX_VALUE width; |
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GX_VALUE x_pos; |
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GX_STRING string; |
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cursor_ptr = &text_input -> gx_single_line_text_input_cursor_instance; |
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insert_pos = text_input -> gx_single_line_text_input_insert_pos; |
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_gx_widget_font_get((GX_WIDGET *)text_input, text_input -> gx_prompt_font_id, &gx_font); |
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_gx_widget_border_width_get((GX_WIDGET *)text_input, &width); |
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_gx_widget_client_get((GX_WIDGET *)text_input, width, &client); |
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/* Calculate distance from first character to character insert position. */ |
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string.gx_string_ptr = text_input -> gx_single_line_text_input_buffer; |
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string.gx_string_length = insert_pos; |
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_gx_system_string_width_get_ext(gx_font, &string, &width); |
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✓✓✓ |
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switch (text_input -> gx_widget_style & GX_STYLE_TEXT_ALIGNMENT_MASK) |
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{ |
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case GX_STYLE_TEXT_RIGHT: |
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x_pos = (GX_VALUE)(client.gx_rectangle_right - 1); |
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break; |
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case GX_STYLE_TEXT_CENTER: |
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x_pos = client.gx_rectangle_left; |
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x_pos = (GX_VALUE)(x_pos + 1 + ((client.gx_rectangle_right - client.gx_rectangle_left + 1) >> 1)); |
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break; |
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case GX_STYLE_TEXT_LEFT: |
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default: |
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x_pos = (GX_VALUE)(client.gx_rectangle_left + 1); |
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break; |
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} |
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/* Pick up draw start position. */ |
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x_pos = (GX_VALUE)(x_pos - text_input -> gx_single_line_text_input_xoffset); |
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/* Update cursor position. */ |
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cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = (GX_VALUE)(x_pos + width); |
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return GX_SUCCESS; |
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} |
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