106 lines
3.0 KiB
C++
106 lines
3.0 KiB
C++
////////////////////////////////////////////////////////////////////////////////////////////////////
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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_VIEWBOX_H__
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#define __GUI_VIEWBOX_H__
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#include <NsCore/Noesis.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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struct Size;
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struct Point;
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class Decorator;
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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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/// Defines a content decorator that can stretch and scale a single child to fill the available
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/// space.
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///
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/// http://msdn.microsoft.com/en-us/library/system.windows.controls.viewbox.aspx
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////////////////////////////////////////////////////////////////////////////////////////////////////
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class NS_GUI_CORE_API Viewbox: public FrameworkElement
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{
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public:
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Viewbox();
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~Viewbox();
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/// Returns the scale necessary to stretch element size to the available size
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static Point GetStretchScale(const Size& elementSize, const Size& availableSize,
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Stretch stretch, StretchDirection stretchDirection = StretchDirection_Both);
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/// Gets or sets the *StretchDirection*, which determines how scaling is applied to the contents
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/// of a Viewbox
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//@{
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StretchDirection GetStretchDirection() const;
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void SetStretchDirection(StretchDirection stretchDirection);
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//@}
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/// Gets or sets the Viewbox *Stretch* mode, which determines how content fits into the
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/// available space
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//@{
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Stretch GetStretch() const;
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void SetStretch(Stretch stretch);
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//@}
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/// Gets or sets the single child of a Viewbox element
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/// \prop
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//@{
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UIElement* GetChild() const;
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void SetChild(UIElement* child);
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//@}
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public:
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/// Dependency properties
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//@{
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static const DependencyProperty* StretchDirectionProperty;
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static const DependencyProperty* StretchProperty;
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//@}
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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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//@}
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/// From FrameworkElement
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//@{
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void CloneOverride(FrameworkElement* clone, FrameworkTemplate* template_) const override;
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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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void OnTemplatedParentChanged(FrameworkElement* old_, FrameworkElement* new_) override;
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//@}
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private:
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Size GetStretchSize(const Size& childSize, const Size& availableSize, Point& scale);
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Decorator* GetStretchDecorator() const;
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private:
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NS_DECLARE_REFLECTION(Viewbox, 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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