105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// NoesisGUI - http://www.noesisengine.com
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// Copyright (c) 2013 Noesis Technologies S.L. All Rights Reserved.
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#ifndef __GUI_ADORNERLAYER_H__
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#define __GUI_ADORNERLAYER_H__
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#include <NsCore/Noesis.h>
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#include <NsCore/ReflectionDeclare.h>
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#include <NsCore/Vector.h>
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#include <NsCore/HashMap.h>
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#include <NsGui/CoreApi.h>
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#include <NsGui/FrameworkElement.h>
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namespace Noesis
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{
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class Adorner;
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NS_WARNING_PUSH
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NS_MSVC_WARNING_DISABLE(4251 4275)
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Represents a surface for rendering adorners. An adorner layer is guaranteed to be at a higher
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/// Z-order than the elements being adorned, so adorners are always rendered on top of the
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/// adorned elements.
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///
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/// https://docs.microsoft.com/en-us/dotnet/api/system.windows.documents.adornerlayer
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////////////////////////////////////////////////////////////////////////////////////////////////////
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class NS_GUI_CORE_API AdornerLayer: public FrameworkElement
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{
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public:
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AdornerLayer();
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~AdornerLayer();
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/// Returns the first adorner layer in the visual tree above a specified Visual
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static AdornerLayer* GetAdornerLayer(Visual* visual);
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/// Adds an adorner to the adorner layer
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void Add(Adorner* adorner);
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/// Removes the specified Adorner from the adorner layer
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void Remove(Adorner* adorner);
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/// Updates the layout and redraws all of the adorners in the adorner layer
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void Update();
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/// Updates the layout and redraws all of the adorners in the adorner layer that are bound to
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/// the specified element
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void Update(UIElement* element);
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protected:
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/// From BaseRefCounted
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//@{
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int32_t OnDestroy() override;
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//@}
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/// From Visual
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//@{
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uint32_t GetVisualChildrenCount() const override;
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Visual* GetVisualChild(uint32_t index) const override;
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void OnVisualParentChanged(Visual* oldParent) override;
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//@}
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/// From FrameworkElement
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//@{
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uint32_t GetLogicalChildrenCount() const override;
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Ptr<BaseComponent> GetLogicalChild(uint32_t index) const override;
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Size MeasureOverride(const Size& availableSize) override;
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Size ArrangeOverride(const Size& finalSize) override;
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//@}
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private:
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typedef Vector<Adorner*> AdornerList;
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void UpdateAdorners();
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void UpdateAdorners(UIElement* element, const AdornerList& adorners, bool invalidate);
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void OnAdornedElementUpdated(Visual* visual);
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void OnAdornedElementDestroyed(DependencyObject* d);
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void Clear(UIElement* adornedElement);
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AdornerList& RegisterAdornedElement(UIElement* adornedElement);
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void UnregisterAdornedElement(UIElement* adornedElement, const AdornerList& adorners);
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private:
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Vector<Ptr<Adorner>> mAdorners;
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typedef HashMap<UIElement*, AdornerList> AdornedElements;
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AdornedElements mAdornedElements;
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bool mInvalidated;
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NS_DECLARE_REFLECTION(AdornerLayer, FrameworkElement);
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};
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NS_WARNING_POP
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}
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#endif
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