public void ScrollOffsetChangesDiscarded()
{
// Offset changes are ignored when the presenter is non-scrollable
var child = ContentControlWithChild(200, 200);
ScrollContentPresenter presenter = new ScrollContentPresenter {
Content = child,
Width = 100,
Height = 100,
CanHorizontallyScroll = true,
CanVerticallyScroll = true,
ScrollOwner = new ScrollViewer()
};
presenter.SetHorizontalOffset(50);
presenter.SetVerticalOffset(60);
presenter.CanHorizontallyScroll = false;
presenter.CanVerticallyScroll = false;
presenter.SetHorizontalOffset(20);
presenter.SetVerticalOffset(30);
presenter.CanHorizontallyScroll = true;
presenter.CanVerticallyScroll = true;
presenter.Measure(new Size(100, 100));
presenter.Arrange(new Rect(0, 0, 100, 100));
Assert.AreEqual(50, presenter.HorizontalOffset, "#1");
Assert.AreEqual(60, presenter.VerticalOffset, "#2");
}
void ForceScrollOffsetCore(Point offset, Point expectedOffset, Rect expectedSlot, bool scrollable)
{
var child = ContentControlWithChild(200, 200);
ScrollViewer viewer = new ScrollViewer {
HorizontalScrollBarVisibility = scrollable ? ScrollBarVisibility.Visible : ScrollBarVisibility.Disabled,
VerticalScrollBarVisibility = scrollable ? ScrollBarVisibility.Visible : ScrollBarVisibility.Disabled,
Content = child,
};
CreateAsyncTest(viewer, () => {
ScrollContentPresenter presenter = viewer.FindFirstChild <ScrollContentPresenter> ();
presenter.Width = 100;
presenter.Height = 100;
presenter.SetHorizontalOffset(offset.X);
presenter.SetVerticalOffset(offset.Y);
}, () => {
ScrollContentPresenter presenter = viewer.FindFirstChild <ScrollContentPresenter> ();
Assert.AreEqual(expectedOffset.X, presenter.HorizontalOffset, "#1");
Assert.AreEqual(expectedOffset.Y, presenter.VerticalOffset, "#2");
Assert.AreEqual(expectedSlot, LayoutInformation.GetLayoutSlot(child), "#3");
});
}
public void ScrollOffsetsAreCached2()
{
var child = ContentControlWithChild(200, 200);
ScrollContentPresenter presenter = new ScrollContentPresenter {
Content = child,
Width = 100,
Height = 100,
CanHorizontallyScroll = true,
CanVerticallyScroll = true,
ScrollOwner = new ScrollViewer()
};
presenter.Measure(new Size(100, 100));
presenter.SetHorizontalOffset(50);
presenter.SetVerticalOffset(50);
presenter.Arrange(new Rect(0, 0, 100, 100));
Assert.AreEqual(50, presenter.HorizontalOffset, "#3");
Assert.AreEqual(50, presenter.VerticalOffset, "#4");
}
public void ScrollOffsetsAreCached2_NonScrollable()
{
// The offsets are ignored when the presenter is non-scrollable
var child = ContentControlWithChild(200, 200);
ScrollContentPresenter presenter = new ScrollContentPresenter {
Content = child,
Width = 100,
Height = 100,
CanHorizontallyScroll = false,
CanVerticallyScroll = false,
ScrollOwner = new ScrollViewer()
};
presenter.Measure(new Size(100, 100));
presenter.SetHorizontalOffset(50);
presenter.SetVerticalOffset(50);
presenter.Arrange(new Rect(0, 0, 100, 100));
Assert.AreEqual(0, presenter.HorizontalOffset, "#3");
Assert.AreEqual(0, presenter.VerticalOffset, "#4");
}
