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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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/** Vertical List (List) */ |
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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_widget.h" |
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#include "gx_window.h" |
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#include "gx_system.h" |
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#include "gx_utility.h" |
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#include "gx_scrollbar.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_vertical_list_total_rows_set PORTABLE C */ |
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/* 6.1.10 */ |
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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 assigns total number of list rows. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* vertical_list Vertical list control block */ |
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/* count Number of rows */ |
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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_ENTER_CRITICAL Obtain GUIX system lock */ |
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/* GX_EXIT_CRITICAL Release GUIX system lock */ |
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/* _gx_first_client_child_get Get the first client child */ |
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/* [gx_vertical_list_callback] Vertical list callback */ |
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/* _gx_window_scrollbar_find Find the scrollbar */ |
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/* _gx_scrollbar_reset Reset the schollbar */ |
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/* _gx_system_dirty_mark Mark the widget 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_vertical_list_total_rows_set(GX_VERTICAL_LIST *list, INT count) |
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{ |
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INT page_index; |
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INT index; |
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GX_WIDGET *test; |
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GX_SCROLLBAR *pScroll; |
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GX_ENTER_CRITICAL |
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/* Update total count of rows. */ |
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list -> gx_vertical_list_total_rows = count; |
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/* Update selected index. */ |
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✓✓ |
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if (list -> gx_vertical_list_selected < 0) |
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{ |
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list -> gx_vertical_list_selected = 0; |
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} |
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✓✓ |
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if (list -> gx_vertical_list_selected > count - 1) |
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{ |
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list -> gx_vertical_list_selected = count - 1; |
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} |
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/* Calculate current page index. */ |
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page_index = list -> gx_vertical_list_top_index; |
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test = _gx_widget_first_client_child_get((GX_WIDGET *)list); |
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✓✓✓✓
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while (test && (test -> gx_widget_size.gx_rectangle_bottom <= list -> gx_widget_size.gx_rectangle_top)) |
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{ |
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page_index++; |
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test = _gx_widget_next_client_child_get(test); |
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} |
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/* Calculate new page index */ |
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✓✓ |
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if (page_index + list -> gx_vertical_list_visible_rows > count) |
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{ |
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✓✓ |
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if (count > list -> gx_vertical_list_visible_rows) |
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{ |
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page_index = count - list -> gx_vertical_list_visible_rows; |
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} |
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else |
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{ |
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page_index = 0; |
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} |
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} |
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/* Add idle children back to vertical list. */ |
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✓✓ |
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if (list -> gx_vertical_list_idle_child_list) |
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{ |
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✓✓ |
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while (list -> gx_vertical_list_idle_child_list) |
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{ |
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test = list -> gx_vertical_list_idle_child_list; |
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list -> gx_vertical_list_idle_child_list = list -> gx_vertical_list_idle_child_list -> gx_widget_next; |
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_gx_widget_attach((GX_WIDGET *)list, test); |
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list -> gx_vertical_list_child_count++; |
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} |
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} |
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/* Check whether list child count is larger than count. */ |
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✓✓ |
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while (list -> gx_vertical_list_child_count > count) |
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{ |
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test = _gx_widget_last_client_child_get((GX_WIDGET *)list); |
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✓✓ |
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if (test) |
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{ |
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_gx_widget_detach(test); |
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/* Put detached widget to idle list. */ |
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test -> gx_widget_next = list -> gx_vertical_list_idle_child_list; |
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list -> gx_vertical_list_idle_child_list = test; |
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list -> gx_vertical_list_child_count--; |
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} |
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else |
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{ |
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return GX_FAILURE; |
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} |
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} |
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list -> gx_vertical_list_top_index = 0; |
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index = 0; |
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test = _gx_widget_first_client_child_get((GX_WIDGET *)list); |
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✓✓ |
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while (test) |
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{ |
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list -> gx_vertical_list_callback(list, test, index++); |
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test = _gx_widget_next_client_child_get(test); |
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} |
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/* Reposition child widgets. */ |
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_gx_vertical_list_children_position(list); |
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/* Make new page index visible */ |
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_gx_vertical_list_page_index_set(list, page_index); |
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_gx_window_scrollbar_find((GX_WINDOW *)list, GX_TYPE_VERTICAL_SCROLL, &pScroll); |
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✓✓ |
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if (pScroll) |
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{ |
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_gx_scrollbar_reset(pScroll, GX_NULL); |
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} |
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GX_EXIT_CRITICAL |
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/* Refresh screen. */ |
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✓✓ |
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if (list -> gx_widget_status & GX_STATUS_VISIBLE) |
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{ |
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_gx_system_dirty_mark((GX_WIDGET *)list); |
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} |
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return GX_SUCCESS; |
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} |
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