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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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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_vertical_list_children_position 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 positions the children for the vertical list */ |
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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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/* */ |
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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_height_get retrieves the height of the */ |
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/* widget */ |
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/* _gx_widget_resize resizes the widget */ |
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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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/* 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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UINT _gx_vertical_list_children_position(GX_VERTICAL_LIST *vertical_list) |
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{ |
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GX_RECTANGLE childsize = vertical_list -> gx_window_client; |
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GX_WIDGET *child = vertical_list -> gx_widget_first_child; |
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INT index = vertical_list -> gx_vertical_list_top_index; |
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GX_VALUE height; |
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GX_VALUE client_height; |
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vertical_list -> gx_vertical_list_child_height = 0; |
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vertical_list -> gx_vertical_list_child_count = 0; |
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✓✓ |
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while (child) |
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{ |
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✓✓ |
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if (!(child -> gx_widget_status & GX_STATUS_NONCLIENT)) |
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{ |
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/* increment child count */ |
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vertical_list -> gx_vertical_list_child_count++; |
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/* assign this child's id */ |
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✓✓ |
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if (!(child -> gx_widget_id)) |
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{ |
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child -> gx_widget_id = (USHORT)(LIST_CHILD_ID_START + vertical_list -> gx_vertical_list_child_count); |
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} |
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✓✓ |
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if (index == vertical_list -> gx_vertical_list_selected) |
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{ |
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child -> gx_widget_style |= GX_STYLE_DRAW_SELECTED; |
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} |
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else |
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{ |
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child -> gx_widget_style &= ~GX_STYLE_DRAW_SELECTED; |
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} |
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index++; |
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child -> gx_widget_status &= ~GX_STATUS_ACCEPTS_FOCUS; |
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/* pick up child item height, needed for scrolling */ |
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_gx_widget_height_get(child, &height); |
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✓✓ |
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if (height > vertical_list -> gx_vertical_list_child_height) |
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{ |
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vertical_list -> gx_vertical_list_child_height = height; |
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} |
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/* move this child into position */ |
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childsize.gx_rectangle_bottom = (GX_VALUE)(childsize.gx_rectangle_top + height - 1); |
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_gx_widget_resize(child, &childsize); |
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childsize.gx_rectangle_top = (GX_VALUE)(childsize.gx_rectangle_bottom + 1); |
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} |
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child = child -> gx_widget_next; |
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} |
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/* calculate number of visible rows, needed for scrolling info */ |
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✓✓ |
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if (vertical_list -> gx_vertical_list_child_height > 0) |
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{ |
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_gx_window_client_height_get((GX_WINDOW *)vertical_list, &client_height); |
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vertical_list -> gx_vertical_list_visible_rows = (GX_VALUE)((client_height + vertical_list -> gx_vertical_list_child_height - 1) / |
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vertical_list -> gx_vertical_list_child_height); |
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} |
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else |
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{ |
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vertical_list -> gx_vertical_list_visible_rows = 1; |
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} |
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return(GX_SUCCESS); |
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} |
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