110 lines
3.5 KiB
C
110 lines
3.5 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_LINEARGRADIENTBRUSH_H__
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#define __GUI_LINEARGRADIENTBRUSH_H__
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#include <NsCore/Noesis.h>
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#include <NsGui/GradientBrush.h>
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namespace Noesis
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{
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struct Point;
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Paints an area with a linear gradient.
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/// A LinearGradientBrush paints an area with a linear gradient. A linear gradient defines a
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/// gradient along a line. The line's end points are defined by the *StartPoint* and *EndPoint*
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/// properties of the linear gradient. A LinearGradientBrush brush paints its *GradientStops* along
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/// this line.
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///
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/// The default linear gradient is diagonal. In the default, the *StartPoint* of a linear gradient
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/// is (0,0), the upper-left corner of the area being painted, and its *EndPoint* is (1,1), the
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/// lower-right corner of the area being painted. The colors in the resulting gradient are
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/// interpolated along the diagonal path.
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///
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/// It is possible to specify a gradient axis that does not completely fill area being painted. When
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/// this occurs, the *SpreadMethod* property determines how the remaining area is painted.
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///
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/// .. code-block:: xml
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///
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/// <Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
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/// <Rectangle Width="200" Height="100">
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/// <Rectangle.Fill>
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/// <LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
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/// <GradientStop Color="Blue" Offset="0"/>
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/// <GradientStop Color="Red" Offset="1.0"/>
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/// </LinearGradientBrush>
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/// </Rectangle.Fill>
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/// </Rectangle>
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/// </Page>
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///
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/// http://msdn.microsoft.com/en-us/library/system.windows.media.lineargradientbrush.aspx
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////////////////////////////////////////////////////////////////////////////////////////////////////
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class NS_GUI_CORE_API LinearGradientBrush final: public GradientBrush
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{
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public:
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LinearGradientBrush();
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/// Gets or sets the starting coordinates of the linear gradient
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//@{
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const Point& GetStartPoint() const;
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void SetStartPoint(const Point& startPoint);
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//@}
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/// Gets or sets the ending coordinates of the linear gradient
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//@{
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const Point& GetEndPoint() const;
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void SetEndPoint(const Point& endPoint);
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//@}
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// Hides Freezable methods for convenience
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//@{
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Ptr<LinearGradientBrush> Clone() const;
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Ptr<LinearGradientBrush> CloneCurrentValue() const;
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//@}
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/// From IRenderProxyCreator
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//@{
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void CreateRenderProxy(RenderTreeUpdater& updater, uint32_t proxyIndex) override;
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void UpdateRenderProxy(RenderTreeUpdater& updater, uint32_t proxyIndex) override;
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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* EndPointProperty;
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static const DependencyProperty* StartPointProperty;
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//@}
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protected:
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/// From DependencyObject
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//@{
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bool OnPropertyChanged(const DependencyPropertyChangedEventArgs& args) override;
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//@}
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/// From Freezable
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//@{
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Ptr<Freezable> CreateInstanceCore() const override;
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//@}
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private:
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enum UpdateFlags
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{
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UpdateFlags_Vector = GradientBrush::UpdateFlags_Sentinel
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};
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NS_DECLARE_REFLECTION(LinearGradientBrush, GradientBrush)
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};
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}
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#endif
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