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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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/** Drop 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_system.h" |
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#include "gx_drop_list.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_drop_list_create 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 creates a drop list. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* drop_list Drop list control block */ |
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/* name Name of drop list */ |
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/* parent Pointer to parent widget */ |
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/* total_rows Total number of rows in */ |
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/* drop list */ |
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/* open_height Height of the vertical list */ |
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/* callback function called to create */ |
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/* new widgets when the list */ |
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/* is scrolled. */ |
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/* style Style of drop list */ |
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/* drop_list_id Application-defined ID of */ |
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/* the drop list */ |
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/* size Dimensions of the drop list */ |
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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_widget_create Create the underlying widget */ |
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/* memset Clear the memory block */ |
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/* _gx_vertical_list_create Create the underlying */ |
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/* vertical list */ |
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/* _gx_widget_link Link the widget to its parent */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application Code */ |
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/* */ |
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/**************************************************************************/ |
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UINT _gx_drop_list_create(GX_DROP_LIST *drop_list, GX_CONST GX_CHAR *name, |
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GX_WIDGET *parent, INT total_rows, INT open_height, |
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VOID (*callback)(GX_VERTICAL_LIST *, GX_WIDGET *, INT), |
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ULONG style, USHORT drop_list_id, |
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GX_CONST GX_RECTANGLE *size) |
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{ |
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GX_VERTICAL_LIST *list; |
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/* the drop list should not have enabled style */ |
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style &= ~GX_STYLE_ENABLED; |
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/* Call the widget create function. */ |
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_gx_widget_create((GX_WIDGET *)drop_list, name, GX_NULL, style, drop_list_id, size); |
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drop_list -> gx_widget_type = GX_TYPE_DROP_LIST; |
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drop_list -> gx_widget_event_process_function = (UINT (*)(GX_WIDGET *, GX_EVENT *))_gx_drop_list_event_process; |
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drop_list -> gx_drop_list_open_height = open_height; |
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drop_list -> gx_drop_list_pixelmap = 0; |
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drop_list -> gx_drop_list_popup_open = GX_FALSE; |
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drop_list -> gx_widget_draw_function = (VOID (*)(GX_WIDGET *))_gx_drop_list_draw; |
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drop_list -> gx_widget_event_process_function = (UINT (*)(GX_WIDGET *, GX_EVENT *))_gx_drop_list_event_process; |
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drop_list -> gx_widget_disabled_fill_color = drop_list -> gx_widget_normal_fill_color; |
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/* create the drop-down list, which is a modified vertical list */ |
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list = &drop_list -> gx_drop_list_popup.gx_popup_list_list; |
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_gx_vertical_list_create(list, name, GX_NULL, total_rows, callback, style, drop_list_id, size); |
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list -> gx_widget_type = GX_TYPE_POPUP_LIST; |
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list -> gx_widget_event_process_function = (UINT (*)(GX_WIDGET *, GX_EVENT *))_gx_popup_list_event_process; |
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drop_list -> gx_drop_list_popup.gx_popup_list_owner = (GX_WIDGET *)drop_list; |
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/* Determine if a parent widget was provided. */ |
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✓✓ |
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if (parent) |
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{ |
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_gx_widget_link(parent, (GX_WIDGET *)drop_list); |
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} |
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/* Return completion status. */ |
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return(GX_SUCCESS); |
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} |
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