private void OnTransitioning(object sender, bool transitioning)
{
var container = Container;
if (container == null)
{
return;
}
if (!transitioning)
{
return;
}
#pragma warning disable CA2000 // Dispose objects before losing scope
var trans = new TransitionSet();
trans.SetOrdering(TransitionOrdering.Together);
trans.AddListener(new TransitionCompletion(this, container));
#pragma warning restore CA2000 // Dispose objects before losing scope
foreach (var t in BuildTransitions(_transition?.Element))
{
trans.AddTransition(t);
}
TransitionManager.BeginDelayedTransition(container, trans);
}
private void OnTransitioning(object sender, bool transitioning)
{
var container = Container;
if (container == null)
{
return;
}
if (!transitioning)
{
return;
}
var trans = new TransitionSet();
trans.SetOrdering(TransitionOrdering.Together);
trans.AddListener(new TransitionCompletion(this, container));
foreach (var t in BuildTransitions(_transition?.Element))
{
trans.AddTransition(t);
}
TransitionManager.BeginDelayedTransition(container, trans);
}
private void AnimateButtonClick(object sender, EventArgs e)
{
_currentSceneNumber = _currentSceneNumber == 1 ? 2 : 1;
var scene = _currentSceneNumber switch
{
1 => _scene1,
2 => _scene2,
_ => throw new NotImplementedException()
};
var set = new TransitionSet();
set.AddTransition(new Explode());
set.AddTransition(new ChangeBounds());
set.AddTransition(new CustomTransition());
set.SetOrdering(TransitionOrdering.Together);
set.SetDuration(500);
set.SetInterpolator(new DecelerateInterpolator());
TransitionManager.Go(scene, set);
}
public void TransitionSetAddTransition()
{
tlog.Debug(tag, $"TransitionSetAddTransition START");
View view = new View()
{
Name = "view",
TransitionOptions = new TransitionOptions(Window.Instance)
};
view.TransitionOptions.TransitionTag = "Transition";
view.TransitionOptions.EnableTransition = true;
TransitionItemBase transitionItemBase = null;
using (TimePeriod timePeriod = new TimePeriod(500))
{
using (AlphaFunction alphaFunction = new AlphaFunction(AlphaFunction.BuiltinFunctions.Default))
{
transitionItemBase = new TransitionItemBase(view, true, timePeriod, alphaFunction);
}
}
var testingTarget = new TransitionSet();
Assert.IsNotNull(testingTarget, "Should be not null!");
Assert.IsInstanceOf <TransitionSet>(testingTarget, "Should be an Instance of TransitionSet!");
testingTarget.Finished += OnFinished;
try
{
testingTarget.AddTransition(transitionItemBase);
}
catch (Exception e)
{
tlog.Error(tag, "Caught Exception" + e.ToString());
LogUtils.Write(LogUtils.DEBUG, LogUtils.TAG, "Caught Exception" + e.ToString());
Assert.Fail("Caught Exception" + e.ToString());
}
view.Dispose();
transitionItemBase.Dispose();
testingTarget.Dispose();
tlog.Debug(tag, $"TransitionSetAddTransition END (OK)");
}
public void TransitionSetSignalDisconnect()
{
tlog.Debug(tag, $"TransitionSetSignalDisconnect START");
View view = new View()
{
Name = "view",
TransitionOptions = new TransitionOptions(Window.Instance)
};
view.TransitionOptions.TransitionTag = "Transition";
view.TransitionOptions.EnableTransition = true;
TransitionItemBase transitionItemBase = null;
using (TimePeriod timePeriod = new TimePeriod(500))
{
using (AlphaFunction alphaFunction = new AlphaFunction(AlphaFunction.BuiltinFunctions.Default))
{
transitionItemBase = new TransitionItemBase(view, true, timePeriod, alphaFunction);
}
}
var testingTarget = new TransitionSet();
Assert.IsNotNull(testingTarget, "Should be not null!");
Assert.IsInstanceOf <TransitionSet>(testingTarget, "Should be an Instance of TransitionSet!");
testingTarget.AddTransition(transitionItemBase);
var transitionSetSignal = testingTarget.FinishedSignal();
Assert.IsNotNull(transitionSetSignal, "Should be not null!");
Assert.IsInstanceOf <TransitionSetFinishedSignal>(transitionSetSignal, "Should be an Instance of TransitionSet!");
dummyCallback callback = OnDummyCallback;
transitionSetSignal.Connect(callback);
transitionSetSignal.Disconnect(callback);
view.Dispose();
testingTarget.Dispose();
tlog.Debug(tag, $"TransitionSetSignalDisconnect END (OK)");
}
public void TransitionSetAssign()
{
tlog.Debug(tag, $"TransitionSetAssign START");
View view = new View()
{
Name = "view",
TransitionOptions = new TransitionOptions(Window.Instance)
};
view.TransitionOptions.TransitionTag = "Transition";
view.TransitionOptions.EnableTransition = true;
TransitionItemBase transitionItemBase = null;
using (TimePeriod timePeriod = new TimePeriod(500))
{
using (AlphaFunction alphaFunction = new AlphaFunction(AlphaFunction.BuiltinFunctions.Default))
{
transitionItemBase = new TransitionItemBase(view, true, timePeriod, alphaFunction);
}
}
var transitionSet = new TransitionSet();
Assert.IsNotNull(transitionSet, "Should be not null!");
Assert.IsInstanceOf <TransitionSet>(transitionSet, "Should be an Instance of TransitionSet!");
transitionSet.AddTransition(transitionItemBase);
var testingTarget = new TransitionSet();
var result = transitionSet.Assign(testingTarget);
Assert.IsNotNull(result, "Should be not null!");
Assert.IsInstanceOf <TransitionSet>(result, "Should be an Instance of TransitionSet!");
view.Dispose();
transitionItemBase.Dispose();
testingTarget.Dispose();
tlog.Debug(tag, $"TransitionSetAssign END (OK)");
}
/// <summary>
/// Create Transitions between currentTopPage and newTopPage
/// </summary>
/// <param name="currentTopPage">The top page of Navigator.</param>
/// <param name="newTopPage">The new top page after transition.</param>
/// <param name="pushTransition">True if this transition is for push new page</param>
private TransitionSet CreateTransitions(Page currentTopPage, Page newTopPage, bool pushTransition)
{
currentTopPage.SetVisible(true);
// Set Content visible because it was hidden by HideContentOfPage.
(currentTopPage as ContentPage)?.Content?.SetVisible(true);
newTopPage.SetVisible(true);
// Set Content visible because it was hidden by HideContentOfPage.
(newTopPage as ContentPage)?.Content?.SetVisible(true);
List <View> taggedViewsInNewTopPage = new List <View>();
RetrieveTaggedViews(taggedViewsInNewTopPage, newTopPage, true);
List <View> taggedViewsInCurrentTopPage = new List <View>();
RetrieveTaggedViews(taggedViewsInCurrentTopPage, currentTopPage, true);
List <KeyValuePair <View, View> > sameTaggedViewPair = new List <KeyValuePair <View, View> >();
foreach (View currentTopPageView in taggedViewsInCurrentTopPage)
{
bool findPair = false;
foreach (View newTopPageView in taggedViewsInNewTopPage)
{
if ((currentTopPageView.TransitionOptions != null) && (newTopPageView.TransitionOptions != null) &&
currentTopPageView.TransitionOptions?.TransitionTag == newTopPageView.TransitionOptions?.TransitionTag)
{
sameTaggedViewPair.Add(new KeyValuePair <View, View>(currentTopPageView, newTopPageView));
findPair = true;
break;
}
}
if (findPair)
{
taggedViewsInNewTopPage.Remove(sameTaggedViewPair[sameTaggedViewPair.Count - 1].Value);
}
}
foreach (KeyValuePair <View, View> pair in sameTaggedViewPair)
{
taggedViewsInCurrentTopPage.Remove(pair.Key);
}
TransitionSet newTransitionSet = new TransitionSet();
foreach (KeyValuePair <View, View> pair in sameTaggedViewPair)
{
TransitionItem pairTransition = transition.CreateTransition(pair.Key, pair.Value, pushTransition);
if (pair.Value.TransitionOptions?.TransitionWithChild ?? false)
{
pairTransition.TransitionWithChild = true;
}
newTransitionSet.AddTransition(pairTransition);
}
newTransitionSet.Finished += (object sender, EventArgs e) =>
{
if (newTopPage.Layout != null)
{
newTopPage.Layout.RequestLayout();
}
if (currentTopPage.Layout != null)
{
currentTopPage.Layout.RequestLayout();
}
transitionFinished = true;
InvokeTransitionFinished();
transitionSet.Dispose();
};
if (!pushTransition || newTopPage is DialogPage == false)
{
View transitionView = (currentTopPage is ContentPage) ? (currentTopPage as ContentPage).Content : (currentTopPage as DialogPage).Content;
if (currentTopPage.DisappearingTransition != null && transitionView != null)
{
TransitionItemBase disappearingTransition = currentTopPage.DisappearingTransition.CreateTransition(transitionView, false);
disappearingTransition.TransitionWithChild = true;
newTransitionSet.AddTransition(disappearingTransition);
}
else
{
currentTopPage.SetVisible(false);
}
}
if (pushTransition || currentTopPage is DialogPage == false)
{
View transitionView = (newTopPage is ContentPage) ? (newTopPage as ContentPage).Content : (newTopPage as DialogPage).Content;
if (newTopPage.AppearingTransition != null && transitionView != null)
{
TransitionItemBase appearingTransition = newTopPage.AppearingTransition.CreateTransition(transitionView, true);
appearingTransition.TransitionWithChild = true;
newTransitionSet.AddTransition(appearingTransition);
}
}
newTransitionSet.Play();
return(newTransitionSet);
}
/// <summary>
/// Create Transition between currentTopPage and newTopPage
/// </summary>
/// <param name="currentTopPage">The top page of Navigator.</param>
/// <param name="newTopPage">The new top page after transition.</param>
/// <param name="pushTransition">True if this transition is for push new page</param>
private TransitionSet CreateTransition(Page currentTopPage, Page newTopPage, bool pushTransition)
{
currentTopPage.SetVisible(true);
newTopPage.SetVisible(true);
List <View> taggedViewsInNewTopPage = new List <View>();
RetrieveTaggedViews(taggedViewsInNewTopPage, newTopPage);
List <View> taggedViewsInCurrentTopPage = new List <View>();
RetrieveTaggedViews(taggedViewsInCurrentTopPage, currentTopPage);
List <KeyValuePair <View, View> > sameTaggedViewPair = new List <KeyValuePair <View, View> >();
foreach (View currentTopPageView in taggedViewsInCurrentTopPage)
{
bool findPair = false;
foreach (View newTopPageView in taggedViewsInNewTopPage)
{
if ((currentTopPageView.TransitionOptions != null) && (newTopPageView.TransitionOptions != null) &&
currentTopPageView.TransitionOptions?.TransitionTag == newTopPageView.TransitionOptions?.TransitionTag)
{
sameTaggedViewPair.Add(new KeyValuePair <View, View>(currentTopPageView, newTopPageView));
findPair = true;
break;
}
}
if (findPair)
{
taggedViewsInNewTopPage.Remove(sameTaggedViewPair[sameTaggedViewPair.Count - 1].Value);
}
}
foreach (KeyValuePair <View, View> pair in sameTaggedViewPair)
{
taggedViewsInCurrentTopPage.Remove(pair.Key);
}
TransitionSet newTransitionSet = new TransitionSet();
foreach (KeyValuePair <View, View> pair in sameTaggedViewPair)
{
TransitionItem pairTransition = transition.CreateTransition(pair.Key, pair.Value);
if (pair.Value.TransitionOptions?.TransitionWithChild ?? false)
{
pairTransition.TransitionWithChild = true;
}
newTransitionSet.AddTransition(pairTransition);
}
newTransitionSet.Play();
newTransitionSet.Finished += (object sender, EventArgs e) =>
{
transitionFinished = true;
InvokeTransitionFinished();
transitionSet.Dispose();
currentTopPage.Opacity = 1.0f;
};
// default entering/exit transition - fast fade (half duration compaired with that of view pair transition)
int duration = (transition.TimePeriod.DurationMilliseconds + transition.TimePeriod.DelayMilliseconds);
float durationSeconds = (float)duration / 1000.0f;
Animation fade = new Animation(0.8f * durationSeconds);
fade.AnimateTo(currentTopPage, "Opacity", 0.0f);
KeyFrames keyframes = new KeyFrames();
keyframes.Add(0.0f, 0.0f);
keyframes.Add(1.0f, 1.0f);
fade.AnimateBetween(newTopPage, "Opacity", keyframes);
fade.Play();
return(newTransitionSet);
}
/// <summary>
/// Create Transitions between currentTopPage and newTopPage
/// </summary>
/// <param name="currentTopPage">The top page of Navigator.</param>
/// <param name="newTopPage">The new top page after transition.</param>
/// <param name="pushTransition">True if this transition is for push new page</param>
private TransitionSet CreateTransitions(Page currentTopPage, Page newTopPage, bool pushTransition)
{
currentTopPage.SetVisible(true);
newTopPage.SetVisible(true);
List <View> taggedViewsInNewTopPage = new List <View>();
RetrieveTaggedViews(taggedViewsInNewTopPage, newTopPage, true);
List <View> taggedViewsInCurrentTopPage = new List <View>();
RetrieveTaggedViews(taggedViewsInCurrentTopPage, currentTopPage, true);
List <KeyValuePair <View, View> > sameTaggedViewPair = new List <KeyValuePair <View, View> >();
foreach (View currentTopPageView in taggedViewsInCurrentTopPage)
{
bool findPair = false;
foreach (View newTopPageView in taggedViewsInNewTopPage)
{
if ((currentTopPageView.TransitionOptions != null) && (newTopPageView.TransitionOptions != null) &&
currentTopPageView.TransitionOptions?.TransitionTag == newTopPageView.TransitionOptions?.TransitionTag)
{
sameTaggedViewPair.Add(new KeyValuePair <View, View>(currentTopPageView, newTopPageView));
findPair = true;
break;
}
}
if (findPair)
{
taggedViewsInNewTopPage.Remove(sameTaggedViewPair[sameTaggedViewPair.Count - 1].Value);
}
}
foreach (KeyValuePair <View, View> pair in sameTaggedViewPair)
{
taggedViewsInCurrentTopPage.Remove(pair.Key);
}
TransitionSet newTransitionSet = new TransitionSet();
foreach (KeyValuePair <View, View> pair in sameTaggedViewPair)
{
TransitionItem pairTransition = transition.CreateTransition(pair.Key, pair.Value);
if (pair.Value.TransitionOptions?.TransitionWithChild ?? false)
{
pairTransition.TransitionWithChild = true;
}
newTransitionSet.AddTransition(pairTransition);
}
newTransitionSet.Finished += (object sender, EventArgs e) =>
{
transitionFinished = true;
InvokeTransitionFinished();
transitionSet.Dispose();
currentTopPage.Opacity = 1.0f;
};
if (!pushTransition || newTopPage is DialogPage == false)
{
if (currentTopPage.DisappearingTransition != null)
{
TransitionItemBase disappearingTransition = currentTopPage.DisappearingTransition.CreateTransition(currentTopPage, false);
disappearingTransition.TransitionWithChild = true;
newTransitionSet.AddTransition(disappearingTransition);
}
else
{
currentTopPage.SetVisible(false);
}
}
if (pushTransition || currentTopPage is DialogPage == false)
{
if (newTopPage.AppearingTransition != null)
{
TransitionItemBase appearingTransition = newTopPage.AppearingTransition.CreateTransition(newTopPage, true);
appearingTransition.TransitionWithChild = true;
newTransitionSet.AddTransition(appearingTransition);
}
}
newTransitionSet.Play();
return(newTransitionSet);
}
/// <summary>
/// Loads the new constraint layout and adds the animation operation.
/// </summary>
private void PageTransition()
{
// Disable the See More / Hide button so we can't trigger another animation while this one is happening
// It will get re-enabled in OnTransitionEnd
seeMoreHideButton.Enabled = false;
seeMoreModeEnabled = !seeMoreModeEnabled;
if (seeMoreModeEnabled)
{
// Current: Results
// Transition To: See More
// The original x-ray view (that only appears in See More) is hidden to begin with so that
// TalkBack doesn't narrate its elements
xRayDisplayViewOriginal.Visibility = ViewStates.Visible;
Transition transition = new AutoTransition();
transition.AddListener(this); // This listener will hide the conditionListSecondary when the transition is done (and re-enable the See More / Hide button)
TransitionManager.BeginDelayedTransition(root, transition);
seeMoreConstraints.ApplyTo(root);
seeMoreHideButton.SetText(Resource.String.see_all_btn_hide);
layoutManagerPrimary.ScrollEnabled = true;
xRayDisplayView.TextDisplayMode = XRayDisplayView.DisplayMode.Small;
xRayDisplayView.FilenameLabel = GetString(Resource.String.see_all_image_label_analyzed);
}
else
{
// Current: See More
// Transition To: Results
// We need a little bit of a custom transition here:
// We want to fade in the conditionListSecondary and move it at the same time
// We also want to keep the origin x-ray view visible during the transition then hide it afterwards
// This transition takes care of the fade in + move for all elements
TransitionSet mainTransitions = new TransitionSet();
mainTransitions.SetOrdering(TransitionSet.OrderingTogether);
mainTransitions.AddTransition(new ChangeBounds());
mainTransitions.AddTransition(new Fade(Fade.In));
// This transition takes care of fading out the original x-ray view
Transition fadeOut = new Fade(Fade.Out);
fadeOut.AddTarget(Resource.Id.img_xray_original);
// We can then run the two transition sequentially to make sure the fade out happens after everything else
TransitionSet transitions = new TransitionSet();
transitions.SetOrdering(TransitionSet.OrderingSequential);
transitions.AddTransition(mainTransitions);
transitions.AddTransition(fadeOut);
transitions.AddListener(this); // This listener will re-enable the See More / Hide button when the transition is done
TransitionManager.BeginDelayedTransition(root, transitions);
resultsConstraints.ApplyTo(root);
seeMoreHideButton.SetText(Resource.String.results_btn_see_more);
// Need to reset the scroll of conditionListPrimary to the top
layoutManagerPrimary.ScrollToPositionWithOffset(0, 0);
layoutManagerPrimary.ScrollEnabled = false;
xRayDisplayView.TextDisplayMode = XRayDisplayView.DisplayMode.Large;
xRayDisplayView.FilenameLabel = GetString(Resource.String.results_image_label);
}
}
/// <summary>
/// Create Transition between currentTopPage and newTopPage
/// </summary>
/// <param name="currentTopPage">The top page of Navigator.</param>
/// <param name="newTopPage">The new top page after transition.</param>
/// <param name="pushTransition">True if this transition is for push new page</param>
private TransitionSet CreateTransition(Page currentTopPage, Page newTopPage, bool pushTransition)
{
currentTopPage.SetVisible(true);
newTopPage.SetVisible(true);
List <View> taggedViewsInNewTopPage = new List <View>();
RetrieveTaggedViews(taggedViewsInNewTopPage, newTopPage, true);
List <View> taggedViewsInCurrentTopPage = new List <View>();
RetrieveTaggedViews(taggedViewsInCurrentTopPage, currentTopPage, true);
List <KeyValuePair <View, View> > sameTaggedViewPair = new List <KeyValuePair <View, View> >();
foreach (View currentTopPageView in taggedViewsInCurrentTopPage)
{
bool findPair = false;
foreach (View newTopPageView in taggedViewsInNewTopPage)
{
if ((currentTopPageView.TransitionOptions != null) && (newTopPageView.TransitionOptions != null) &&
currentTopPageView.TransitionOptions?.TransitionTag == newTopPageView.TransitionOptions?.TransitionTag)
{
sameTaggedViewPair.Add(new KeyValuePair <View, View>(currentTopPageView, newTopPageView));
findPair = true;
break;
}
}
if (findPair)
{
taggedViewsInNewTopPage.Remove(sameTaggedViewPair[sameTaggedViewPair.Count - 1].Value);
}
}
foreach (KeyValuePair <View, View> pair in sameTaggedViewPair)
{
taggedViewsInCurrentTopPage.Remove(pair.Key);
}
TransitionSet newTransitionSet = new TransitionSet();
sameTaggedViewPair.Reverse();
foreach (KeyValuePair <View, View> pair in sameTaggedViewPair)
{
TransitionItem pairTransition = transition.CreateTransition(pair.Key, pair.Value);
if (pair.Value.TransitionOptions?.TransitionWithChild ?? false)
{
pairTransition.TransitionWithChild = true;
}
newTransitionSet.AddTransition(pairTransition);
}
newTransitionSet.Finished += (object sender, EventArgs e) =>
{
transitionFinished = true;
InvokeTransitionFinished();
transitionSet.Dispose();
currentTopPage.Opacity = 1.0f;
};
// default appearing/disappearing transition - fast fade (half duration compaired with that of view pair transition)
int duration = (transition.TimePeriod.DurationMilliseconds + transition.TimePeriod.DelayMilliseconds);
float durationSeconds = (float)duration / 1000.0f;
if (!pushTransition || newTopPage is DialogPage == false)
{
TransitionItemBase disappearingTransition = currentTopPage.DisappearingTransition.CreateTransition(currentTopPage, false);
newTransitionSet.AddTransition(disappearingTransition);
disappearingTransition.TransitionWithChild = true;
}
if (pushTransition || currentTopPage is DialogPage == false)
{
TransitionItemBase appearingTransition = newTopPage.AppearingTransition.CreateTransition(newTopPage, true);
appearingTransition.TransitionWithChild = true;
newTransitionSet.AddTransition(appearingTransition);
}
newTransitionSet.Play();
return(newTransitionSet);
}