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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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/** System Management (System) */ |
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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_utility.h" |
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#include "gx_system.h" |
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#include "gx_widget.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_system_top_widget_find 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 finds the top widget that contains the test point. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* root Widget pointer */ |
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/* test_point Point to search for */ |
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/* status Widget status to match */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* GX_WIDGET Pointer to found widget */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _gx_utility_rectangle_point_detect Detect point in rectangle */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* _gx_system_event_dispatch Dispatch GUIX events */ |
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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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17103 |
GX_WIDGET *_gx_system_top_widget_find(GX_WIDGET *root, GX_POINT test_point, ULONG status) |
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{ |
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GX_WIDGET *test; |
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GX_WIDGET *winner = GX_NULL; |
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/* Setup test widget pointer to the last child. */ |
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test = root -> gx_widget_last_child; |
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/* Loop through the widgets in reverse order. */ |
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✓✓ |
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while (test) |
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{ |
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✓✓ |
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if (test -> gx_widget_status & GX_STATUS_VISIBLE) |
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{ |
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/* Is the point in this widget? */ |
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✓✓ |
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if (_gx_utility_rectangle_point_detect(&test -> gx_widget_clip, test_point)) |
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{ |
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/* Yes, pickup the last child of this widget. */ |
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root = test; |
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test = root -> gx_widget_last_child; |
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✓✓ |
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if (status) |
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{ |
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✓✓ |
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if (root -> gx_widget_status & status) |
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{ |
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winner = root; |
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} |
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} |
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else |
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{ |
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winner = root; |
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} |
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continue; |
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} |
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} |
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/* Move to the previous widget. */ |
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test = test -> gx_widget_previous; |
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} |
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/* Return the root widget. */ |
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return(winner); |
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} |
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