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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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/** 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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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_system_top_root_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 root window for a given incoming event. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* in_event Pointer to event */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* GX_WINDOW_ROOT Pointer to found root window */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _gx_utility_rectangle_shift Shift a rectangle */ |
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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 event */ |
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/* */ |
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/**************************************************************************/ |
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GX_WINDOW_ROOT *_gx_system_top_root_find(GX_EVENT *in_event) |
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{ |
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GX_WINDOW_ROOT *root = _gx_system_root_window_created_list; |
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GX_RECTANGLE testsize; |
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/* Loop through the widgets in reverse order. */ |
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✓✓ |
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while (root) |
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{ |
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✓✓ |
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if (root -> gx_widget_status & GX_STATUS_VISIBLE) |
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{ |
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✓✓ |
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if (in_event -> gx_event_display_handle == (ULONG)(root -> gx_window_root_canvas -> gx_canvas_display -> gx_display_driver_data)) |
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{ |
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/* get the root window size */ |
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testsize = root -> gx_widget_size; |
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/* offset the size by the canvas offset */ |
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_gx_utility_rectangle_shift(&testsize, |
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root -> gx_window_root_canvas -> gx_canvas_display_offset_x, |
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root -> gx_window_root_canvas -> gx_canvas_display_offset_y); |
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/* Is the point in this widget? */ |
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✓✓ |
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if (_gx_utility_rectangle_point_detect(&testsize, in_event -> gx_event_payload.gx_event_pointdata)) |
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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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/* Move to the next root window. */ |
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root = (GX_WINDOW_ROOT *)root -> gx_widget_next; |
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} |
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/* Return the root widget. */ |
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return(root); |
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} |
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