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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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/** Display Management (Display) */ |
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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_display.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_display_delete 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 deletes a previous-created display */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* display Display control block */ |
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/* display_driver_cleanup Display driver cleanup routine*/ |
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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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/* [display_driver_cleanup] Call the user-supplied */ |
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/* display driver cleanup */ |
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/* routine */ |
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/* memset Cleanup the memory */ |
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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_display_delete(GX_DISPLAY *display, VOID (*display_driver_cleanup)(GX_DISPLAY *)) |
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{ |
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GX_DISPLAY *previous_display; |
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✓✓ |
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if (_gx_system_display_created_count > 0) |
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{ |
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display_driver_cleanup(display); |
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_gx_system_display_created_count--; |
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✓✓ |
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if (display -> gx_display_created_previous) |
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{ |
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/* this is not first display, unlink it: */ |
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previous_display = display -> gx_display_created_previous; |
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previous_display -> gx_display_created_next = display -> gx_display_created_next; |
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✓✓ |
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if (display -> gx_display_created_next) |
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{ |
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display -> gx_display_created_next -> gx_display_created_previous = previous_display; |
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} |
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} |
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else |
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{ |
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/* this is the first display, unlink it */ |
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_gx_system_display_created_list = display -> gx_display_created_next; |
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✓✓ |
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if (_gx_system_display_created_list) |
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{ |
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_gx_system_display_created_list -> gx_display_created_previous = GX_NULL; |
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} |
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} |
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memset(display, 0, sizeof(GX_DISPLAY)); |
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/* Return successful status. */ |
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return(GX_SUCCESS); |
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} |
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return GX_FAILURE; |
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} |
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