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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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/** 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_down_wrap 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 scrolls down the vertical list. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* list Vertical list 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_last_client_child_get Get the last client child */ |
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/* _gx_first_client_child_get Get the first client child */ |
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/* _gx_widget_style_remove Remove a style flag */ |
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/* _gx_widget_back_attach Attach a widget to the back */ |
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/* _gx_widget_shift Relocate a widget */ |
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/* [gx_vertical_list_callback] Vertical list callback */ |
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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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/* 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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VOID _gx_vertical_list_down_wrap(GX_VERTICAL_LIST *list) |
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{ |
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GX_WIDGET *test; |
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GX_WIDGET *check; |
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GX_BOOL moving = GX_TRUE; |
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GX_RECTANGLE newpos; |
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✓✓ |
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while (moving) |
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{ |
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moving = GX_FALSE; |
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✓✓ |
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if ((list -> gx_vertical_list_top_index > 0) || |
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✓✓ |
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(list -> gx_widget_style & GX_STYLE_WRAP)) |
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{ |
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/* scrolling down, see if my bottom widget can be moved to the top: */ |
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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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✓✓ |
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if ((test -> gx_widget_size.gx_rectangle_top > list -> gx_widget_size.gx_rectangle_bottom)) |
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{ |
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/* bottom widget is below my client area, move it to the top: */ |
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moving = GX_TRUE; |
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list -> gx_vertical_list_top_index--; |
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/* Wrap index. */ |
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✓✓ |
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if (list -> gx_vertical_list_top_index < 0) |
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{ |
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list -> gx_vertical_list_top_index = list -> gx_vertical_list_total_rows - 1; |
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} |
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check = _gx_widget_first_client_child_get((GX_WIDGET *)list); |
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✓✓ |
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if (check) |
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{ |
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_gx_widget_detach(test); |
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newpos = test -> gx_widget_size; |
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_gx_utility_rectangle_shift(&newpos, 0, (GX_VALUE)(-(newpos.gx_rectangle_bottom - check -> gx_widget_size.gx_rectangle_top + 1))); |
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_gx_widget_resize(test, &newpos); |
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list -> gx_vertical_list_callback(list, test, list -> gx_vertical_list_top_index); |
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✓✓ |
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if (list -> gx_vertical_list_selected == list -> gx_vertical_list_top_index) |
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{ |
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test -> gx_widget_style |= GX_STYLE_DRAW_SELECTED; |
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} |
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else |
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{ |
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test -> gx_widget_style &= ~GX_STYLE_DRAW_SELECTED; |
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} |
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_gx_widget_back_attach((GX_WIDGET *)list, test); |
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} |
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else |
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{ |
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break; |
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} |
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} |
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} |
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} |
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} |
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} |
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