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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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/** 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_display.h" |
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#include "gx_context.h" |
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#include "gx_widget.h" |
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#include "gx_single_line_text_input.h" |
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#include "gx_text_input_cursor.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_mark_home 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 service moves the end mark position to the start of the input */ |
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/* string. */ |
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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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/* None */ |
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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 the widget border width */ |
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/* _gx_widget_client_get Retrieves client area of the */ |
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/* widget */ |
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/* _gx_system_string_width_get Get the width of a string */ |
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/* _gx_system_dirty_mark Mart the area of the widget */ |
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/* dirty */ |
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/* _gx_system_dirty_partial_add Mark the partial area of a */ |
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/* widget as dirty */ |
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/* _gx_single_line_text_input_text_rectangle_get */ |
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/* Retrieve text rectangle */ |
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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_single_line_text_input_mark_home(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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GX_VALUE border_width; |
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GX_VALUE text_width; |
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GX_RECTANGLE client; |
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GX_FONT *gx_font; |
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GX_VALUE new_xoffset; |
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GX_VALUE new_cursor_pos; |
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UINT start_mark = text_input -> gx_single_line_text_input_start_mark; |
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UINT end_mark = text_input -> gx_single_line_text_input_end_mark; |
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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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/* Check if cursor already in the home position. */ |
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✓✓ |
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if (text_input -> gx_single_line_text_input_insert_pos == 0) |
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{ |
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return GX_SUCCESS; |
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} |
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✓✓ |
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if (start_mark == end_mark) |
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{ |
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/* Set start mark and end mark to current cursor position. */ |
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start_mark = text_input -> gx_single_line_text_input_insert_pos; |
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end_mark = text_input -> gx_single_line_text_input_insert_pos; |
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text_input -> gx_single_line_text_input_start_mark = start_mark; |
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text_input -> gx_single_line_text_input_end_mark = end_mark; |
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} |
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_gx_widget_border_width_get((GX_WIDGET *)text_input, &border_width); |
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_gx_widget_client_get((GX_WIDGET *)text_input, border_width, &client); |
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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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/* Calculate new x offset. */ |
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_gx_widget_font_get((GX_WIDGET *)text_input, text_input -> gx_prompt_font_id, &gx_font); |
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string.gx_string_ptr = text_input -> gx_single_line_text_input_buffer; |
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string.gx_string_length = text_input -> gx_single_line_text_input_string_size; |
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_gx_system_string_width_get_ext(gx_font, &string, &text_width); |
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new_xoffset = (GX_VALUE)(client.gx_rectangle_right - client.gx_rectangle_left + 1); |
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new_xoffset = (GX_VALUE)(new_xoffset - 3); |
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✓✓ |
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if (text_width < new_xoffset) |
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{ |
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new_xoffset = text_width; |
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} |
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/* Calculate new cursor position. */ |
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new_cursor_pos = (GX_VALUE)(client.gx_rectangle_right - 1 - new_xoffset); |
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break; |
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case GX_STYLE_TEXT_CENTER: |
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/* Calculate new cursor position. */ |
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new_xoffset = 0; |
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new_cursor_pos = (GX_VALUE)(client.gx_rectangle_left + 1 + ((client.gx_rectangle_right - client.gx_rectangle_left + 1) >> 1)); |
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new_cursor_pos = (GX_VALUE)(new_cursor_pos - text_input -> gx_single_line_text_input_xoffset); |
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break; |
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case GX_STYLE_TEXT_LEFT: |
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default: |
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new_xoffset = 0; |
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new_cursor_pos = (GX_VALUE)(client.gx_rectangle_left + 1); |
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break; |
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} |
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✓✓ |
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if (text_input -> gx_single_line_text_input_xoffset != new_xoffset) |
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{ |
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/* We need to update x offset, mark whole text input area dirty. */ |
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_gx_system_dirty_mark((GX_WIDGET *)text_input); |
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} |
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else |
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{ |
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✓✓ |
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if (start_mark == end_mark) |
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{ |
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/* Mark old curosr rectangle as dirty. */ |
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_gx_text_input_cursor_dirty_rectangle_get(cursor_ptr, &client); |
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_gx_system_dirty_partial_add((GX_WIDGET *)text_input, &client); |
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} |
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/* Get bounding rectangle of highlight text. */ |
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_gx_single_line_text_input_text_rectangle_get(text_input, (INT)(0 - end_mark), &client); |
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/* Mark highlight area as dirty. */ |
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_gx_system_dirty_partial_add((GX_WIDGET *)text_input, &client); |
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} |
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text_input -> gx_single_line_text_input_end_mark = 0; |
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/* Update cursor position. */ |
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cursor_ptr -> gx_text_input_cursor_pos.gx_point_x = new_cursor_pos; |
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/* Update character insert position. */ |
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text_input -> gx_single_line_text_input_insert_pos = 0; |
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/* Update text input x offset. */ |
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text_input -> gx_single_line_text_input_xoffset = new_xoffset; |
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return GX_SUCCESS; |
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} |
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