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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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/** Scroll Wheel Management (Generic Scroll Wheel) */ |
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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_widget.h" |
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#include "gx_scroll_wheel.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_generic_scroll_wheel_event_process PORTABLE C */ |
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/* 6.1.7 */ |
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/* AUTHOR */ |
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/* */ |
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/* Ting Zhu, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This service processes an event for the generic scroll wheel. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* wheel Scroll wheel control block */ |
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/* event_ptr Pointer to event to process */ |
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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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/* _gx_generic_scroll_wheel_children_position */ |
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/* Position the children for */ |
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/* the scroll wheel children */ |
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/* _gx_scroll_wheel_event_process Process events for the */ |
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/* scroll wheel widget */ |
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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_generic_scroll_wheel_event_process(GX_GENERIC_SCROLL_WHEEL *wheel, GX_EVENT *event_ptr) |
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{ |
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UINT status; |
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✓✓ |
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switch (event_ptr -> gx_event_type) |
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{ |
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case GX_EVENT_SHOW: |
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/* Show the children before attempting to position them, because child |
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widgets do not know their size until shown. */ |
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status = _gx_scroll_wheel_event_process((GX_SCROLL_WHEEL *)wheel, event_ptr); |
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/* Position the child widgets. */ |
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✓✓ |
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if (!wheel -> gx_generic_scroll_wheel_child_count) |
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{ |
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_gx_generic_scroll_wheel_children_position(wheel); |
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} |
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break; |
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default: |
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status = _gx_scroll_wheel_event_process((GX_SCROLL_WHEEL *)wheel, event_ptr); |
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break; |
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} |
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return status; |
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} |
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