public void Shouldnt_Count_Unique_Enqueue_For_Limit_In_Loop()
{
var target = new LayoutQueue <string>(_ => true);
//1
target.Enqueue("Foo");
Assert.Equal(1, target.Count);
target.BeginLoop(3);
target.Dequeue();
//2
target.Enqueue("Foo");
target.Enqueue("Foo");
target.Dequeue();
//3
target.Enqueue("Foo");
target.Enqueue("Foo");
Assert.Equal(1, target.Count);
target.Dequeue();
//4 more than limit shouldn't be added
target.Enqueue("Foo");
Assert.Equal(0, target.Count);
}
public virtual ValueSize MeasureElement <TRenderSize>(IVisualElement element,
TRenderSize availableSpace)
where TRenderSize : IRenderSize
{
if (!element.IsRequiresMeasure)
{
lock (_measureLock)
{
if (_lastMeasurements.TryGetValue(element, out var val))
{
LayoutQueue.RemoveVisualFromMeasureQueue(element);
return(val);
}
}
}
// measure anyways if we know nothing of it...?
//return ValueSize.Empty;
VisualLineage.PushVisual(element);
//_styleContext.PushVisual(element);
var layoutElement = GetElementForLayout(element);
////////////////////////
var res = MeasureElementImpl(layoutElement, availableSpace);
////////////////////////
LayoutQueue.RemoveVisualFromMeasureQueue(element);
element.AcceptChanges(ChangeType.Measure);
return(res);
}
public void Should_Enqueue_When_Condition_True_After_Loop_When_Limit_Met()
{
var target = new LayoutQueue <string>(_ => true);
//1
target.Enqueue("Foo");
Assert.Equal(1, target.Count);
target.BeginLoop(3);
target.Dequeue();
//2
target.Enqueue("Foo");
target.Dequeue();
//3
target.Enqueue("Foo");
Assert.Equal(1, target.Count);
target.Dequeue();
//4 more than limit shouldn't be added to queue
target.Enqueue("Foo");
Assert.Equal(0, target.Count);
target.EndLoop();
//after loop should be added once
Assert.Equal(1, target.Count);
Assert.Equal("Foo", target.First());
}
public void Shouldnt_Enqueue_When_Condition_False_After_Loop_When_Limit_Met()
{
var target = new LayoutQueue <string>(_ => false);
//1
target.Enqueue("Foo");
Assert.Equal(1, target.Count);
target.BeginLoop(3);
target.Dequeue();
//2
target.Enqueue("Foo");
target.Dequeue();
//3
target.Enqueue("Foo");
Assert.Equal(1, target.Count);
target.Dequeue();
//4 more than limit shouldn't be added
target.Enqueue("Foo");
Assert.Equal(0, target.Count);
target.EndLoop();
Assert.Equal(0, target.Count);
}
private void Init(IWindowManager windowManager,
IThemeProvider themeProvider,
IViewPerspective viewPerspective,
DisplayMetrics displayMetrics,
AndroidFontProvider fontProvider,
IViewState viewState,
IUiProvider uiProvider,
ref AndroidMeasureKit measureContext,
ref AndroidRenderContext renderContext,
ref RefreshRenderContext refreshRenderContext)
{
var imageProvider = new AndroidImageProvider(displayMetrics);
var visualLineage = new VisualLineage();
var lastMeasures = new Dictionary <IVisualElement, ValueSize>();
var layoutQueue = new LayoutQueue();
measureContext = new AndroidMeasureKit(windowManager, fontProvider,
this, lastMeasures, themeProvider, displayMetrics, visualLineage, layoutQueue);
var visualPositions = new Dictionary <IVisualElement, ValueCube>();
renderContext = new AndroidRenderContext(viewPerspective,
fontProvider, viewState, this, visualPositions,
lastMeasures, themeProvider, visualLineage, layoutQueue);
refreshRenderContext = new RefreshRenderContext(viewPerspective, this,
visualPositions, lastMeasures, themeProvider, visualLineage, layoutQueue);
Container.ResolveTo <IImageProvider>(imageProvider);
Container.ResolveTo(uiProvider);
Container.ResolveTo(themeProvider);
}
public void Should_Enqueue_UniqueElements()
{
var target = new LayoutQueue <string>(_ => true);
var items = new[] { "1", "2", "3", "1" };
foreach (var item in items)
{
target.Enqueue(item);
}
Assert.Equal(3, target.Count);
Assert.Equal(items.Take(3), target);
}
public void Should_Enqueue()
{
var target = new LayoutQueue <string>(_ => true);
var refQueue = new Queue <string>();
var items = new[] { "1", "2", "3" };
foreach (var item in items)
{
target.Enqueue(item);
refQueue.Enqueue(item);
}
Assert.Equal(refQueue, target);
}
public void Should_Dequeue()
{
var target = new LayoutQueue <string>(_ => true);
var refQueue = new Queue <string>();
var items = new[] { "1", "2", "3" };
foreach (var item in items)
{
target.Enqueue(item);
refQueue.Enqueue(item);
}
while (refQueue.Count > 0)
{
Assert.Equal(refQueue.Dequeue(), target.Dequeue());
}
}
//public StaticGdiRenderKit(IViewPerspective viewPerspective,
// IMultiSerializer xmlSerializer)
//: this(viewPerspective, xmlSerializer)
//{}
public StaticGdiRenderKit(IViewPerspective viewPerspective,
IMultiSerializer xmlSerializer)
: base(new GdiImageProvider(), xmlSerializer,
NullSvgBuilder.Instance, null)
{
var defaultSurrogates = new BaseSurrogateProvider();
var lastMeasure = new Dictionary <IVisualElement, ValueSize>();
var visualLineage = new VisualLineage();
var layoutQueue = new LayoutQueue();
MeasureContext = new GdiMeasureContext(defaultSurrogates, lastMeasure,
BaselineThemeProvider.Instance, visualLineage, layoutQueue);
RenderContext = new GdiRenderContext(viewPerspective,
MeasureContext.Graphics, defaultSurrogates, lastMeasure,
new Dictionary <IVisualElement, ValueCube>(),
BaselineThemeProvider.Instance, visualLineage, layoutQueue);
}
public OpenGLRenderKit(IFontProvider fontProvider,
IGLContext glContext,
IThemeProvider themeProvider,
IImageProvider imageProvider)
: base(imageProvider, Serializer,
new SvgPathBuilder(imageProvider, Serializer), null)
//: base(themeProvider, Serializer.AttributeParser,
// Serializer.TypeInferrer, Serializer.TypeManipulator,
// new Dictionary<IVisualElement, ValueCube>(), imageProvider,
// Serializer.AssemblyList, Serializer)
{
var lastMeasurements = new Dictionary <IVisualElement, ValueSize>();
var lastRender = new Dictionary <IVisualElement, ValueCube>();
var visualLineage = new VisualLineage();
var layoutQueue = new LayoutQueue();
MeasureContext = new GLMeasureContext(fontProvider, this,
lastMeasurements, themeProvider, visualLineage, layoutQueue);
RenderContext = new GLRenderContext(new BasePerspective(),
glContext, fontProvider, this, themeProvider,
visualLineage, lastRender, layoutQueue);
}
public void UpdateLayout()
{
base.VerifyAccess();
if (!this._isUpdating)
{
this._isUpdating = true;
WindowManager.Instance.Invalidate();
LayoutQueue measureQueue = this.MeasureQueue;
LayoutQueue arrangeQueue = this.ArrangeQueue;
int num = 0;
bool flag = true;
UIElement parent = null;
try
{
this.invalidateTreeIfRecovering();
while (!this.MeasureQueue.IsEmpty || !this.ArrangeQueue.IsEmpty)
{
if (++num > 0x99)
{
base.Dispatcher.BeginInvoke(this._updateLayoutBackground, this);
parent = null;
flag = false;
return;
}
int num2 = 0;
long loopStartTime = 0L;
Label_0070:
if (++num2 > 0x99)
{
num2 = 0;
if (this.LimitExecution(ref loopStartTime))
{
parent = null;
flag = false;
return;
}
}
parent = measureQueue.GetTopMost();
if (parent != null)
{
parent.Measure(parent._previousAvailableWidth, parent._previousAvailableHeight);
measureQueue.RemoveOrphans(parent);
goto Label_0070;
}
num2 = 0;
loopStartTime = 0L;
Label_00C7:
if (++num2 > 0x99)
{
num2 = 0;
if (this.LimitExecution(ref loopStartTime))
{
parent = null;
flag = false;
return;
}
}
parent = arrangeQueue.GetTopMost();
if (parent != null)
{
int num4;
int num5;
int num6;
int num7;
this.getProperArrangeRect(parent, out num4, out num5, out num6, out num7);
parent.Arrange(num4, num5, num6, num7);
arrangeQueue.RemoveOrphans(parent);
goto Label_00C7;
}
}
parent = null;
flag = false;
}
finally
{
this._isUpdating = false;
this._layoutRequestPosted = false;
if (flag)
{
this._gotException = true;
this._forceLayoutElement = parent;
base.Dispatcher.BeginInvoke(this._updateLayoutBackground, this);
}
}
}
}
public void UpdateLayout()
{
VerifyAccess();
//make UpdateLayout to be a NOP if called during UpdateLayout.
if (_isUpdating)
{
return;
}
_isUpdating = true;
WindowManager.Instance.Invalidate();
LayoutQueue measureQueue = MeasureQueue;
LayoutQueue arrangeQueue = ArrangeQueue;
int cnt = 0;
bool gotException = true;
UIElement currentElement = null;
//NOTE:
//
//There are a bunch of checks here that break out of and re-queue layout if
//it looks like things are taking too long or we have somehow gotten into an
//infinite loop. In the TinyCLR we will probably have better ways of
//dealing with a bad app through app domain separation, but keeping this
//robustness can't hurt. In a single app domain scenario, it could
//give the opportunity to get out to the system if something is misbehaving,
//we like this kind of reliability in embedded systems.
//
try
{
invalidateTreeIfRecovering();
while ((!MeasureQueue.IsEmpty) || (!ArrangeQueue.IsEmpty))
{
if (++cnt > 153)
{
//loop detected. Lets re-queue and let input/user to correct the situation.
//
Dispatcher.BeginInvoke(_updateLayoutBackground, this);
currentElement = null;
gotException = false;
return;
}
//loop for Measure
//We limit the number of loops here by time - normally, all layout
//calculations should be done by this time, this limit is here for
//emergency, "infinite loop" scenarios - yielding in this case will
//provide user with ability to continue to interact with the app, even though
//it will be sluggish. If we don't yield here, the loop is goign to be a deadly one
int loopCounter = 0;
TimeSpan loopStartTime = TimeSpan.Zero;
while (true)
{
if (++loopCounter > 153)
{
loopCounter = 0;
if (LimitExecution(ref loopStartTime))
{
currentElement = null;
gotException = false;
return;
}
}
currentElement = measureQueue.GetTopMost();
if (currentElement == null)
{
break; //exit if no more Measure candidates
}
currentElement.Measure(
currentElement._previousAvailableWidth,
currentElement._previousAvailableHeight
);
measureQueue.RemoveOrphans(currentElement);
}
//loop for Arrange
//if Arrange dirtied the tree go clean it again
//We limit the number of loops here by time - normally, all layout
//calculations should be done by this time, this limit is here for
//emergency, "infinite loop" scenarios - yielding in this case will
//provide user with ability to continue to interact with the app, even though
//it will be sluggish. If we don't yield here, the loop is goign to be a deadly one
loopCounter = 0;
loopStartTime = TimeSpan.Zero;
while (true)
{
if (++loopCounter > 153)
{
loopCounter = 0;
if (LimitExecution(ref loopStartTime))
{
currentElement = null;
gotException = false;
return;
}
}
currentElement = arrangeQueue.GetTopMost();
if (currentElement == null)
{
break; //exit if no more Arrange candidates
}
int arrangeX, arrangeY, arrangeWidth, arrangeHeight;
getProperArrangeRect(currentElement, out arrangeX, out arrangeY, out arrangeWidth, out arrangeHeight);
#if TINYCLR_DEBUG_LAYOUT
Trace.Print("arrangeWidth = " + arrangeWidth);
Trace.Print("arrangeHeight = " + arrangeWidth);
#endif
currentElement.Arrange(arrangeX, arrangeY, arrangeWidth, arrangeHeight);
arrangeQueue.RemoveOrphans(currentElement);
}
/* REFACTOR -- do we need Layout events and Size changed events?
*
* //let LayoutUpdated handlers to call UpdateLayout
* //note that it means we can get reentrancy into UpdateLayout past this point,
* //if any of event handlers call UpdateLayout sync. Need to protect from reentrancy
* //in the firing methods below.
*
* fireSizeChangedEvents();
* if ((!MeasureQueue.IsEmpty) || (!ArrangeQueue.IsEmpty)) continue;
* fireLayoutUpdateEvent();
*/
}
currentElement = null;
gotException = false;
}
finally
{
_isUpdating = false;
_layoutRequestPosted = false;
if (gotException)
{
//set indicator
_gotException = true;
_forceLayoutElement = currentElement;
//make attempt to request the subsequent layout calc
Dispatcher.BeginInvoke(_updateLayoutBackground, this);
}
}
}
