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47 lines
1.9 KiB
C++
47 lines
1.9 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#pragma once
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#include <AzCore/Component/ComponentBus.h>
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////////////////////////////////////////////////////////////////////////////////////////////////////
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class UiLayoutManagerInterface
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: public AZ::ComponentBus
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{
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public: // member functions
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virtual ~UiLayoutManagerInterface() {}
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public: // static member data
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//! Mark an element to recompute its layout. This is called when something that affects the layout
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//! has been modified. (ex. layout element size changed, layout element property changed, layout
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//! element child count changed.)
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virtual void MarkToRecomputeLayout(AZ::EntityId entityId) = 0;
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//! Mark the specified element's parent to recompute its layout. The parent uses its child's layout
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//! cell values to calculate its layout, so this is called when something that affects the
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//! child's layout cell values has been modified. (ex. child's layout cell property changed.)
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//! Since a child's layout cell values may affect its parent's layout cell values, the top level parent
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//! is marked
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virtual void MarkToRecomputeLayoutsAffectedByLayoutCellChange(AZ::EntityId entityId, bool isDefaultLayoutCell) = 0;
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//! Unmark all elements from needing to recompute their layouts
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virtual void UnmarkAllLayouts() = 0;
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//! Recompute layouts of marked elements and clear the marked layout list
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virtual void RecomputeMarkedLayouts() = 0;
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//! Compute the layout for the specified element and its descendants
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virtual void ComputeLayoutForElementAndDescendants(AZ::EntityId entityId) = 0;
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//! Only one component on a entity can implement the events
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static const AZ::EBusHandlerPolicy HandlerPolicy = AZ::EBusHandlerPolicy::Single;
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};
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typedef AZ::EBus<UiLayoutManagerInterface> UiLayoutManagerBus;
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