public RepeatBehavior(Duration duration)
{
if (duration == null)
{
throw new ArgumentNullException("duration");
}
_iterationCount = 0;
_duration = duration;
}
// Inits or resets an opacity animation used to make the caret blink.
private void SetBlinkAnimation(bool visible, bool positionChanged)
{
if (!_isBlinkEnabled)
{
return;
}
// NB: "Blink" is the period of time between successive
// state changes in the caret animation. "Flash" is
// 2 * blink, the period of time to transition from
// visible, to hidden, to visible again.
int blinkInterval = Win32GetCaretBlinkTime();
if (blinkInterval > 0) // -1 if the caret shouldn't blink.
{
Duration blinkDuration = new Duration(TimeSpan.FromMilliseconds(blinkInterval * 2));
if (_blinkAnimationClock == null || _blinkAnimationClock.Timeline.Duration != blinkDuration)
{
DoubleAnimationUsingKeyFrames blinkAnimation = new DoubleAnimationUsingKeyFrames();
blinkAnimation.BeginTime = null;
blinkAnimation.RepeatBehavior = RepeatBehavior.Forever;
blinkAnimation.KeyFrames.Add(new DiscreteDoubleKeyFrame(1, KeyTime.FromPercent(0.0)));
blinkAnimation.KeyFrames.Add(new DiscreteDoubleKeyFrame(0, KeyTime.FromPercent(0.5)));
blinkAnimation.Duration = blinkDuration;
_blinkAnimationClock = blinkAnimation.CreateClock();
_blinkAnimationClock.Controller.Begin();
_caretElement.ApplyAnimationClock(UIElement.OpacityProperty, _blinkAnimationClock);
}
}
else if (_blinkAnimationClock != null)
{
// No blink (control panel option).
_caretElement.ApplyAnimationClock(UIElement.OpacityProperty, null);
_blinkAnimationClock = null;
}
if (_blinkAnimationClock != null)
{
// Disable the animation when the caret isn't rendered
// to get better perf.
if (visible && (!(_blinkAnimationClock.CurrentState == ClockState.Active) || positionChanged))
{
// Start the blinking animation for caret
_blinkAnimationClock.Controller.Begin();
}
else if (!visible)
{
// Stop the blinking animation if the caret isn't visible even we start it yet.
// Because ApplyAnimationClock() calling can start the animation without
// the calling of Begin() which case is the auto selection(with DatePicker).
_blinkAnimationClock.Controller.Stop();
}
}
}
public Animation(double duration, int StartValue, int StopValue)
{
_duration = new Duration(duration);
_start = StartValue;
_stop = StopValue;
}
//
internal static void RestoreStoryboardDuration(Storyboard storyboard, Duration? duration)
{
Debug.Assert(storyboard != null);
if (duration != null)
{
foreach (Timeline timeline in storyboard.Children)
{
timeline.Duration = (Duration)duration;
}
}
}
//
internal static Duration? ResetStoryboardDuration(Storyboard storyboard)
{
Debug.Assert(storyboard != null);
if (storyboard.Children.Count > 0)
{
Duration nullDuration = new Duration(new TimeSpan(0, 0, 0, 0));
Duration duration = storyboard.Children[0].Duration;
foreach (Timeline timeline in storyboard.Children)
{
timeline.Duration = nullDuration;
}
return duration;
}
return null;
}
internal override void ComputeCurrentFillInterval(TimeIntervalCollection parentIntervalCollection,
TimeSpan beginTime, TimeSpan endTime, Duration period,
double appliedSpeedRatio, double accelRatio, double decelRatio,
bool isAutoReversed)
{
_currentIntervals.Clear();
parentIntervalCollection.ProjectPostFillZone(ref _currentIntervals,
beginTime, endTime,
period, appliedSpeedRatio,
accelRatio, decelRatio, isAutoReversed);
}
internal override void ComputeCurrentIntervals(TimeIntervalCollection parentIntervalCollection,
TimeSpan beginTime, TimeSpan? endTime,
Duration fillDuration, Duration period,
double appliedSpeedRatio, double accelRatio, double decelRatio,
bool isAutoReversed)
{
_currentIntervals.Clear();
parentIntervalCollection.ProjectOntoPeriodicFunction(ref _currentIntervals,
beginTime, endTime,
fillDuration, period, appliedSpeedRatio,
accelRatio, decelRatio, isAutoReversed);
}
public SingleAnimation(float fromValue, float toValue, Duration duration)
{
}
/// <summary>
/// Creates a new ByteAnimation that will animate a
/// Byte property from its base value to the value specified
/// by the "toValue" parameter of this constructor.
/// </summary>
public ByteAnimation(Byte toValue, Duration duration)
: this()
{
To = toValue;
Duration = duration;
}
/// <summary>
/// Creates a ParallelTimeline with the specified begin time and duration.
/// </summary>
/// <param name="beginTime">
/// The scheduled BeginTime for this ParallelTimeline.
/// </param>
/// <param name="duration">
/// The simple Duration of this ParallelTimeline.
/// </param>
public ParallelTimeline(TimeSpan?beginTime, Duration duration)
: base(beginTime, duration)
{
}
/// <summary>
/// Creates a ParallelTimeline with the specified BeginTime, Duration and RepeatBehavior.
/// </summary>
/// <param name="beginTime">
/// The scheduled BeginTime for this ParallelTimeline.
/// </param>
/// <param name="duration">
/// The simple Duration of this ParallelTimeline.
/// </param>
/// <param name="repeatBehavior">
/// The RepeatBehavior for this ParallelTimeline.
/// </param>
public ParallelTimeline(TimeSpan?beginTime, Duration duration, RepeatBehavior repeatBehavior)
: base(beginTime, duration, repeatBehavior)
{
}
/// <summary>
/// Creates a new RectAnimation that will animate a
/// Rect property from its base value to the value specified
/// by the "toValue" parameter of this constructor.
/// </summary>
public RectAnimation(Rect toValue, Duration duration)
: this()
{
To = toValue;
Duration = duration;
}
private void ResolveKeyTimes()
{
Debug.Assert(!_areKeyTimesValid, "KeyFramePoint3DAnimaton.ResolveKeyTimes() shouldn't be called if the key times are already valid.");
int keyFrameCount = 0;
if (_keyFrames != null)
{
keyFrameCount = _keyFrames.Count;
}
if (keyFrameCount == 0)
{
_sortedResolvedKeyFrames = null;
_areKeyTimesValid = true;
return;
}
_sortedResolvedKeyFrames = new ResolvedKeyFrameEntry[keyFrameCount];
int index = 0;
// Initialize the _originalKeyFrameIndex.
for ( ; index < keyFrameCount; index++)
{
_sortedResolvedKeyFrames[index]._originalKeyFrameIndex = index;
}
// calculationDuration represents the time span we will use to resolve
// percent key times. This is defined as the value in the following
// precedence order:
// 1. The animation's duration, but only if it is a time span, not auto or forever.
// 2. The largest time span specified key time of all the key frames.
// 3. 1 second, to match the From/To/By animations.
TimeSpan calculationDuration = TimeSpan.Zero;
Duration duration = Duration;
if (duration.HasTimeSpan)
{
calculationDuration = duration.TimeSpan;
}
else
{
calculationDuration = LargestTimeSpanKeyTime;
}
int maxKeyFrameIndex = keyFrameCount - 1;
ArrayList unspecifiedBlocks = new ArrayList();
bool hasPacedKeyTimes = false;
//
// Pass 1: Resolve Percent and Time key times.
//
index = 0;
while (index < keyFrameCount)
{
KeyTime keyTime = _keyFrames[index].KeyTime;
switch (keyTime.Type)
{
case KeyTimeType.Percent:
_sortedResolvedKeyFrames[index]._resolvedKeyTime = TimeSpan.FromMilliseconds(
keyTime.Percent * calculationDuration.TotalMilliseconds);
index++;
break;
case KeyTimeType.TimeSpan:
_sortedResolvedKeyFrames[index]._resolvedKeyTime = keyTime.TimeSpan;
index++;
break;
case KeyTimeType.Paced:
case KeyTimeType.Uniform:
if (index == maxKeyFrameIndex)
{
// If the last key frame doesn't have a specific time
// associated with it its resolved key time will be
// set to the calculationDuration, which is the
// defined in the comments above where it is set.
// Reason: We only want extra time at the end of the
// key frames if the user specifically states that
// the last key frame ends before the animation ends.
_sortedResolvedKeyFrames[index]._resolvedKeyTime = calculationDuration;
index++;
}
else if (index == 0 &&
keyTime.Type == KeyTimeType.Paced)
{
// Note: It's important that this block come after
// the previous if block because of rule precendence.
// If the first key frame in a multi-frame key frame
// collection is paced, we set its resolved key time
// to 0.0 for performance reasons. If we didn't, the
// resolved key time list would be dependent on the
// base value which can change every animation frame
// in many cases.
_sortedResolvedKeyFrames[index]._resolvedKeyTime = TimeSpan.Zero;
index++;
}
else
{
if (keyTime.Type == KeyTimeType.Paced)
{
hasPacedKeyTimes = true;
}
KeyTimeBlock block = new KeyTimeBlock();
block.BeginIndex = index;
// NOTE: We don't want to go all the way up to the
// last frame because if it is Uniform or Paced its
// resolved key time will be set to the calculation
// duration using the logic above.
//
// This is why the logic is:
// ((++index) < maxKeyFrameIndex)
// instead of:
// ((++index) < keyFrameCount)
while ((++index) < maxKeyFrameIndex)
{
KeyTimeType type = _keyFrames[index].KeyTime.Type;
if (type == KeyTimeType.Percent ||
type == KeyTimeType.TimeSpan)
{
break;
}
else if (type == KeyTimeType.Paced)
{
hasPacedKeyTimes = true;
}
}
Debug.Assert(index < keyFrameCount,
"The end index for a block of unspecified key frames is out of bounds.");
block.EndIndex = index;
unspecifiedBlocks.Add(block);
}
break;
}
}
//
// Pass 2: Resolve Uniform key times.
//
for (int j = 0; j < unspecifiedBlocks.Count; j++)
{
KeyTimeBlock block = (KeyTimeBlock)unspecifiedBlocks[j];
TimeSpan blockBeginTime = TimeSpan.Zero;
if (block.BeginIndex > 0)
{
blockBeginTime = _sortedResolvedKeyFrames[block.BeginIndex - 1]._resolvedKeyTime;
}
// The number of segments is equal to the number of key
// frames we're working on plus 1. Think about the case
// where we're working on a single key frame. There's a
// segment before it and a segment after it.
//
// Time known Uniform Time known
// ^ ^ ^
// | | |
// | (segment 1) | (segment 2) |
Int64 segmentCount = (block.EndIndex - block.BeginIndex) + 1;
TimeSpan uniformTimeStep = TimeSpan.FromTicks((_sortedResolvedKeyFrames[block.EndIndex]._resolvedKeyTime - blockBeginTime).Ticks / segmentCount);
index = block.BeginIndex;
TimeSpan resolvedTime = blockBeginTime + uniformTimeStep;
while (index < block.EndIndex)
{
_sortedResolvedKeyFrames[index]._resolvedKeyTime = resolvedTime;
resolvedTime += uniformTimeStep;
index++;
}
}
//
// Pass 3: Resolve Paced key times.
//
if (hasPacedKeyTimes)
{
ResolvePacedKeyTimes();
}
//
// Sort resolved key frame entries.
//
Array.Sort(_sortedResolvedKeyFrames);
_areKeyTimesValid = true;
return;
}
public SingleAnimation(float fromValue, float tovalue, Duration duration, FillBehavior fillBehavior)
{
}
/// <summary>
/// Creates a TimelineGroup with the specified begin time and duration.
/// </summary>
/// <param name="beginTime">
/// The scheduled BeginTime for this TimelineGroup.
/// </param>
/// <param name="duration">
/// The simple Duration of this TimelineGroup.
/// </param>
protected TimelineGroup(Nullable<TimeSpan> beginTime, Duration duration)
: base(beginTime, duration)
{
}
/// <summary>
/// Scroll the desired element into the ScrollViewer's viewport.
/// </summary>
/// <param name="viewer">The ScrollViewer.</param>
/// <param name="element">The element to scroll into view.</param>
/// <param name="horizontalMargin">The margin to add on the left or right.
/// </param>
/// <param name="verticalMargin">The margin to add on the top or bottom.
/// </param>
/// <param name="duration">The duration of the animation.</param>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="viewer" /> is null.
/// </exception>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="element" /> is null.
/// </exception>
public static void ScrollIntoView(this ScrollViewer viewer, FrameworkElement element, double horizontalMargin, double verticalMargin, Duration duration)
{
if (viewer == null)
{
throw new ArgumentNullException("viewer");
}
else if (element == null)
{
throw new ArgumentNullException("element");
}
// Get the position of the element relative to the ScrollHost
Rect? itemRect = element.GetBoundsRelativeTo(viewer);
if (itemRect == null)
{
return;
}
// Scroll vertically
double verticalOffset = viewer.VerticalOffset;
double verticalDelta = 0;
double hostBottom = viewer.ViewportHeight;
double itemBottom = itemRect.Value.Bottom + verticalMargin;
if (hostBottom < itemBottom)
{
verticalDelta = itemBottom - hostBottom;
verticalOffset += verticalDelta;
}
double itemTop = itemRect.Value.Top - verticalMargin;
if (itemTop - verticalDelta < 0)
{
verticalOffset -= verticalDelta - itemTop;
}
// Scroll horizontally
double horizontalOffset = viewer.HorizontalOffset;
double horizontalDelta = 0;
double hostRight = viewer.ViewportWidth;
double itemRight = itemRect.Value.Right + horizontalMargin;
if (hostRight < itemRight)
{
horizontalDelta = itemRight - hostRight;
horizontalOffset += horizontalDelta;
}
double itemLeft = itemRect.Value.Left - horizontalMargin;
if (itemLeft - horizontalDelta < 0)
{
horizontalOffset -= horizontalDelta - itemLeft;
}
if (duration == TimeSpan.Zero)
{
viewer.ScrollToVerticalOffset(verticalOffset);
viewer.ScrollToHorizontalOffset(horizontalOffset);
}
else
{
Storyboard storyboard = new Storyboard();
SetVerticalOffset(viewer, viewer.VerticalOffset);
SetHorizontalOffset(viewer, viewer.HorizontalOffset);
DoubleAnimation verticalOffsetAnimation = new DoubleAnimation { To = verticalOffset, Duration = duration };
DoubleAnimation horizontalOffsetAnimation = new DoubleAnimation { To = verticalOffset, Duration = duration };
Storyboard.SetTarget(verticalOffsetAnimation, viewer);
Storyboard.SetTarget(horizontalOffsetAnimation, viewer);
Storyboard.SetTargetProperty(horizontalOffsetAnimation, new PropertyPath(ScrollViewerExtensions.HorizontalOffsetProperty));
Storyboard.SetTargetProperty(verticalOffsetAnimation, new PropertyPath(ScrollViewerExtensions.VerticalOffsetProperty));
storyboard.Children.Add(verticalOffsetAnimation);
storyboard.Children.Add(horizontalOffsetAnimation);
storyboard.Begin();
}
}
/// <summary>
/// Creates a TimelineGroup with the specified BeginTime, Duration and RepeatBehavior.
/// </summary>
/// <param name="beginTime">
/// The scheduled BeginTime for this TimelineGroup.
/// </param>
/// <param name="duration">
/// The simple Duration of this TimelineGroup.
/// </param>
/// <param name="repeatBehavior">
/// The RepeatBehavior for this TimelineGroup.
/// </param>
protected TimelineGroup(Nullable<TimeSpan> beginTime, Duration duration, RepeatBehavior repeatBehavior)
: base(beginTime, duration, repeatBehavior)
{
}
/// <summary>
/// Creates a new DoubleAnimation that will animate a
/// Double property from its base value to the value specified
/// by the "toValue" parameter of this constructor.
/// </summary>
public DoubleAnimation(Double toValue, Duration duration)
: this()
{
To = toValue;
Duration = duration;
}
