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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_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_screen_stack_pop 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 removes the topmost entry from the system screen */ |
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/* stack, and attaches the poped screen to its parent. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* control Pointer of stack entry. */ |
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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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/* None */ |
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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_system_screen_stack_pop(VOID) |
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{ |
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INT top; |
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GX_WIDGET *screen; |
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GX_WIDGET *parent; |
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top = _gx_system_screen_stack.gx_screen_stack_control_top; |
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✓✓ |
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if (top >= 0) |
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{ |
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top <<= 1; |
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screen = _gx_system_screen_stack.gx_screen_stack_control_memory[top]; |
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parent = _gx_system_screen_stack.gx_screen_stack_control_memory[top + 1]; |
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✓✓ |
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if (parent) |
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{ |
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/* Attach the popped screen to its parent. */ |
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_gx_widget_attach(parent, screen); |
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} |
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_gx_system_screen_stack.gx_screen_stack_control_top--; |
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return(GX_SUCCESS); |
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} |
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else |
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{ |
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return(GX_FAILURE); |
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} |
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} |
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