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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* Copyright (c) 2026-present Eclipse ThreadX contributors |
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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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/** Multi Line Text Input Management (Multi 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_scrollbar.h" |
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#include "gx_multi_line_text_view.h" |
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#include "gx_multi_line_text_input.h" |
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#include "gx_window.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_multi_line_text_input_buffer_clear 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 deletes all characters from the text input buffer. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* text_input Multi-line text input widget */ |
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/* control blcok */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* status Completion status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _gx_multi_line_text_input_char_remove Remove characters from input */ |
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/* buffer */ |
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/* _gx_multi_line_text_view_string_total_rows_compute */ |
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/* Calculate total rows */ |
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/* _gx_multi_line_text_input_cursor_pos_update */ |
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/* Update cursor position */ |
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/* _gx_window_scrollbar_find Find scrollbar for a window */ |
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/* _gx_scrollbar_reset Reset scroll bar information */ |
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/* _gx_system_dirty_mark Mark the widget area as dirty */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* GUIX Internal Code */ |
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/* */ |
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/**************************************************************************/ |
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UINT _gx_multi_line_text_input_buffer_clear(GX_MULTI_LINE_TEXT_INPUT *text_input) |
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{ |
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GX_SCROLLBAR *scroll; |
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✓✓ |
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if (text_input -> gx_multi_line_text_view_text.gx_string_length != 0) |
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{ |
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_gx_multi_line_text_input_char_remove(text_input, 0, text_input -> gx_multi_line_text_view_text.gx_string_length); |
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/* Initiate line cache information. */ |
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text_input -> gx_multi_line_text_view_first_cache_line = 0; |
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memset(text_input -> gx_multi_line_text_view_line_index, 0, sizeof(UINT) * GX_MULTI_LINE_INDEX_CACHE_SIZE); |
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/* Calculate new text rows. */ |
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_gx_multi_line_text_view_string_total_rows_compute((GX_MULTI_LINE_TEXT_VIEW *)text_input); |
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text_input -> gx_multi_line_text_input_text_insert_position = 0; |
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_gx_window_scrollbar_find((GX_WINDOW *)text_input, GX_TYPE_VERTICAL_SCROLL, &scroll); |
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✓✓ |
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if (scroll) |
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{ |
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/* Reset scrollbar. */ |
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_gx_scrollbar_reset(scroll, GX_NULL); |
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} |
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_gx_multi_line_text_input_cursor_pos_update(text_input, GX_TRUE); |
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/* Mark the widget area dirty. */ |
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_gx_system_dirty_mark((GX_WIDGET *)text_input); |
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} |
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return GX_SUCCESS; |
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} |
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