244 lines
8.3 KiB
C
244 lines
8.3 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_TIMELINE_H__
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#define __GUI_TIMELINE_H__
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#include <NsCore/Noesis.h>
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#include <NsCore/ReflectionDeclare.h>
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#include <NsCore/ReflectionDeclareEnum.h>
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#include <NsCore/Nullable.h>
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#include <NsGui/Animatable.h>
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#include <NsGui/AnimationApi.h>
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#include <NsGui/Duration.h>
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#include <NsGui/Events.h>
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namespace Noesis
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{
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class TimeSpan;
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class RepeatBehavior;
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class Clock;
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class FrameworkElement;
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class TimeManager;
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template<class T> class Nullable;
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Specifies how a Timeline behaves when it is outside its active period but its parent is
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/// inside its active or hold period
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////////////////////////////////////////////////////////////////////////////////////////////////////
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enum FillBehavior
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{
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/// After it reaches the end of its active period, the timeline holds its progress until the
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/// end of its parent's active and hold periods
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FillBehavior_HoldEnd,
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/// The timeline stops if it is outside its active period while its parent is inside its
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/// active period
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FillBehavior_Stop
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Arguments to be passed in timeline Complete event
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////////////////////////////////////////////////////////////////////////////////////////////////////
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struct TimelineEventArgs: public EventArgs
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{
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DependencyObject* target;
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TimelineEventArgs(DependencyObject* t = 0): target(t) { }
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};
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typedef Delegate<void (BaseComponent*, const TimelineEventArgs&)> TimelineEventHandler;
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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 segment of time.
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///
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/// A timeline represents a segment of time. It provides properties that enable you to specify the
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/// length of that segment, when it should start, how many times it will repeat, how fast time
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/// progresses in that segment, and more.
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///
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/// http://msdn.microsoft.com/en-us/library/system.windows.media.animation.timeline.aspx
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////////////////////////////////////////////////////////////////////////////////////////////////////
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class NS_GUI_ANIMATION_API Timeline: public Animatable
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{
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public:
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Timeline();
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Timeline(const Nullable<TimeSpan>& beginTime);
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Timeline(const Nullable<TimeSpan>& beginTime, const Duration& duration);
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Timeline(const Nullable<TimeSpan>& beginTime, const Duration& duration,
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const RepeatBehavior& repeatBehavior);
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virtual ~Timeline() = 0;
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/// Gets or sets the desired frame rate for this timeline and its child timelines
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//@{
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static int GetDesiredFrameRate(const DependencyObject* timeline);
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static void SetDesiredFrameRate(DependencyObject* timeline, int rate);
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//@}
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/// Gets or sets a value specifying the percentage of the timeline's Duration spent
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/// accelerating the passage of time from zero to its maximum rate
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//@{
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float GetAccelerationRatio() const;
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void SetAccelerationRatio(float value);
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//@}
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/// Gets or sets a value that indicates whether the timeline plays in reverse after it
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/// completes a forward iteration
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//@{
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bool GetAutoReverse() const;
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void SetAutoReverse(bool value);
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//@}
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/// Gets or sets the time at which this Timeline should begin.
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/// A timeline's own *SpeedRatio* setting does not affect its BeginTime. For example, a
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/// timeline with a *BeginTime* of 5 seconds, a *SpeedRatio* of 2, and a parent timeline
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/// with a *SpeedRatio* of 1 starts after 5 seconds, not 2.5.
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//@{
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const Nullable<TimeSpan>& GetBeginTime() const;
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void SetBeginTime(const Nullable<TimeSpan>& time);
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//@}
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/// Gets or sets a value specifying the percentage of the timeline's Duration spent
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/// decelerating the passage of time from its maximum rate to zero
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//@{
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float GetDecelerationRatio() const;
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void SetDecelerationRatio(float value);
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//@}
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/// Gets or sets the length of time for which this timeline plays, not counting repetitions
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//@{
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const Duration& GetDuration() const;
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void SetDuration(const Duration& duration);
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//@}
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/// Gets or sets a value that specifies how the animation behaves after it reaches the end of
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/// its active period
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//@{
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FillBehavior GetFillBehavior() const;
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void SetFillBehavior(FillBehavior behavior);
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//@}
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/// Gets or sets the name of this Timeline
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//@{
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const char* GetName() const;
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void SetName(const char* name);
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//@}
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/// Gets or sets the repeating behavior of this timeline
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//@{
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const RepeatBehavior& GetRepeatBehavior() const;
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void SetRepeatBehavior(const RepeatBehavior& behavior);
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//@}
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/// Gets or sets the rate, relative to its parent, at which time progresses for this Timeline
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//@{
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float GetSpeedRatio() const;
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void SetSpeedRatio(float value);
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//@}
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/// Occurs when the Storyboard object has completed playing
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DelegateEvent_<TimelineEventHandler> Completed();
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/// Creates a new Clock from this Timeline and specifies whether the new Clock is controllable.
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/// If this Timeline has children, a tree of clocks is created with this Timeline as the root.
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Ptr<Clock> CreateClock(TimeManager* timeManager, bool hasControllableRoot);
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/// Gets the duration of the timeline when duration is set to automatic
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virtual Duration GetNaturalDuration(Clock* clock) const;
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/// Gets duration of a single pass (without the reverse)
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const Duration& GetSinglePassDuration() const;
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/// Gets duration of a complete pass (with the reverse, if applicable)
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const Duration& GetIterationDuration() const;
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/// Gets total duration of the animation (with repetitions and autoreverse, but without
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/// BeginTime nor SpeedRatio)
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const Duration& GetTotalDuration() const;
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/// Indicates that the total duration is not affected by SpeedRatio
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bool IsTotalDurationAbsolute() const;
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const Duration& GetNormalizedDuration() const;
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/// Computes the effective durations of the timeline
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void CalculateEffectiveDurations();
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/// Calculated as TotalDuration / SpeedRatio + BeginTime
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virtual Duration GetEffectiveDuration() const = 0;
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// Called when an owner clock is being destroyed
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virtual void OnClockDestroyed(const Clock* clock);
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// Hides Freezable methods for convenience
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//@{
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Ptr<Timeline> Clone() const;
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Ptr<Timeline> CloneCurrentValue() const;
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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* AccelerationRatioProperty;
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static const DependencyProperty* AutoReverseProperty;
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static const DependencyProperty* BeginTimeProperty;
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static const DependencyProperty* DecelerationRatioProperty;
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static const DependencyProperty* DesiredFrameRateProperty;
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static const DependencyProperty* DurationProperty;
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static const DependencyProperty* FillBehaviorProperty;
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static const DependencyProperty* NameProperty;
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static const DependencyProperty* RepeatBehaviorProperty;
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static const DependencyProperty* SpeedRatioProperty;
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//@}
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protected:
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/// Creates a Clock for this Timeline
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virtual Ptr<Clock> CreateClockCore(TimeManager* timeManager, bool hasControllableRoot) = 0;
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// From Freezable
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//@{
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void CloneCommonCore(const Freezable* source) override;
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//@}
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private:
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void RaiseCompleted(const TimelineEventArgs& args);
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private:
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friend class Storyboard;
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friend class TimeManager;
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Duration mSinglePassDurationInternal;
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Duration mIterationDurationInternal;
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Duration mTotalDurationInternal;
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Duration mNormalizedDurationInternal;
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TimelineEventHandler mCompleted;
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// Cached dependency properties
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Nullable<TimeSpan> mBeginTime;
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float mSpeedRatio;
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float mAccelerationRatio;
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float mDecelerationRatio;
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bool mAutoReverse;
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bool mTotalDurationAbsolute;
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NS_DECLARE_REFLECTION(Timeline, Animatable)
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};
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NS_WARNING_POP
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}
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NS_DECLARE_REFLECTION_ENUM_EXPORT(NS_GUI_ANIMATION_API, Noesis::FillBehavior)
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#endif
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