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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_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_input_capture 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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/* Temporarily direct all input events to specified widget */ |
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/* */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* ownert Widget that wants to own */ |
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/* input events */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* widget added to capture stack */ |
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/* widget receives GX_STATUS_OWNS_INPUT */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _GX_ENTER_CRITICAL Enter critical section */ |
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/* _gx_widget_status_add Add status flag to the widget */ |
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/* _GX_EXIT_CRITICAL Exit critical section */ |
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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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UINT _gx_system_input_capture(GX_WIDGET *owner) |
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{ |
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GX_WIDGET **stackptr; |
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UINT status = GX_SUCCESS; |
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GX_ENTER_CRITICAL |
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✓✓ |
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if (_gx_system_capture_count < GX_MAX_INPUT_CAPTURE_NESTING) |
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{ |
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✓✓ |
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if (!(owner -> gx_widget_status & GX_STATUS_OWNS_INPUT)) |
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{ |
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stackptr = _gx_system_input_capture_stack + _gx_system_capture_count; |
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*stackptr = owner; |
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_gx_widget_status_add(owner, GX_STATUS_OWNS_INPUT); |
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_gx_system_capture_count++; |
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_gx_system_input_owner = owner; |
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} |
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else |
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{ |
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status = GX_NO_CHANGE; |
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} |
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} |
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else |
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{ |
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status = GX_INPUT_CAPTURE_NESTING_EXCEEDED; |
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} |
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GX_EXIT_CRITICAL |
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return status; |
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} |
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