66 lines
2.4 KiB
C
66 lines
2.4 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_DISCRETESTRINGKEYFRAME_H__
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#define __GUI_DISCRETESTRINGKEYFRAME_H__
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#include <NsCore/Noesis.h>
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#include <NsCore/ReflectionDeclare.h>
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#include <NsGui/StringKeyFrame.h>
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#include <NsGui/AnimationApi.h>
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namespace Noesis
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{
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Animates from the *String* value of the previous key frame to its own *Value* using discrete
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/// interpolation.
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///
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/// This class is used as part of a StringKeyFrameCollection in conjunction with a
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/// StringAnimationUsingKeyFrames to animate a String property value along a set of key frames.
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///
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/// A key frame defines a segment of the StringAnimationUsingKeyFrames to which it belongs. Each key
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/// frame has a target Value and a KeyTime. The KeyTime specifies the time at which the key frame's
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/// Value should be reached. A key frame animates from the target value of the previous key frame to
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/// its own target value. It starts when the previous key frame ends and ends when its own key time
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/// is reached.
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///
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/// Discrete key frames like DiscreteStringKeyFrame create sudden "jumps" between values (no
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/// Interpolation). In other words, the animated property does not change until the key frame's key
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/// time is reached at which point the animated property goes suddenly to the target value.
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///
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/// http://msdn.microsoft.com/en-us/library/system.windows.media.animation.discretestringkeyframe.aspx
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////////////////////////////////////////////////////////////////////////////////////////////////////
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class NS_GUI_ANIMATION_API DiscreteStringKeyFrame final: public StringKeyFrame
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{
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public:
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// Hides Freezable methods for convenience
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//@{
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Ptr<DiscreteStringKeyFrame> Clone() const;
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Ptr<DiscreteStringKeyFrame> CloneCurrentValue() const;
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//@}
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protected:
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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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/// From KeyFrame
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//@{
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String InterpolateValueCore(const String& baseValue, float keyFrameProgress) override;
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//@}
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NS_DECLARE_REFLECTION(DiscreteStringKeyFrame, StringKeyFrame)
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};
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}
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#endif
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