private WidgetSiteControl CreateWidgetSite(MatrixLoc location, bool withAnimation, ref TimeSpan animationTime)
{
var site = new WidgetSiteControl();
var transform = new TransformGroup();
transform.Children.Add(withAnimation ? new ScaleTransform(0, 0) : new ScaleTransform(1, 1));
transform.Children.Add(new TranslateTransform());
site.RenderTransform = transform;
site.RenderTransformOrigin = new Point(0.5, 0.5);
if (withAnimation)
{
AnimateSiteScaleTransform(site, ref animationTime, 0, 1, null);
}
matrixPanel.Children.Add(site);
site.Location = location;
return(site);
}
private void AnimateSiteScaleTransform(WidgetSiteControl site, ref TimeSpan beginTime,
double fromScale, double toScale, EventHandler completedCallback)
{
ScaleTransform transform = (ScaleTransform)((TransformGroup)site.RenderTransform).Children[0];
if (fromScale == double.NaN)
{
transform.BeginAnimation(ScaleTransform.ScaleXProperty, null);
transform.BeginAnimation(ScaleTransform.ScaleYProperty, null);
}
else
{
AnimationTimeline animation = BuildSiteScaleAnimation(beginTime, fromScale, toScale);
if (completedCallback != null)
{
animation.Completed += completedCallback;
}
transform.BeginAnimation(ScaleTransform.ScaleXProperty, animation);
transform.BeginAnimation(ScaleTransform.ScaleYProperty,
BuildSiteScaleAnimation(beginTime, fromScale, toScale));
}
}
private void FindParent()
{
DependencyObject obj = VisualTreeHelper.GetParent( this );
while( obj != null )
{
_parentSite = obj as WidgetSiteControl;
if( _parentSite != null ) break;
obj = VisualTreeHelper.GetParent( obj );
}
}
/// <summary>
/// Initializing constructor
/// </summary>
/// <param name="parentSite">Reference to the parent site control</param>
public WidgetSiteDragHelper(WidgetSiteControl parentSite) : base(parentSite)
{
WidgetSiteControl.AddUndraggableHandler(parentSite, OnWidgetUndraggable);
WidgetSiteControl.AddDraggableHandler(parentSite, OnWidgetDraggable);
}
/// <summary>
/// Initializing constructor
/// </summary>
/// <param name="parentSite">Reference to the parent site control</param>
public WidgetSiteDragHelper( WidgetSiteControl parentSite )
: base(parentSite)
{
WidgetSiteControl.AddUndraggableHandler( parentSite, OnWidgetUndraggable );
WidgetSiteControl.AddDraggableHandler( parentSite, OnWidgetDraggable );
}
private void AnimateTranslate(WidgetSiteControl site, DependencyProperty property, AnimationTimeline animation)
{
((TransformGroup)site.RenderTransform).Children[1].BeginAnimation(property, animation);
}
private void AnimateSiteTranslate(WidgetSiteControl site, double toX, double toY)
{
AnimateTranslate(site, TranslateTransform.XProperty, BuildAnimation(toX));
AnimateTranslate(site, TranslateTransform.YProperty, BuildAnimation(toY));
}
private List <SiteShiftInfo> CalculateWhichSitesToShift(MatrixLoc insertLoc, WidgetSiteDragDropData data)
{
MatrixLoc sourceLoc = data.Site.Location;
List <SiteShiftInfo> relocatedSites;
int i, step;
double translateBy;
// preallocate enough so we don't need to worry about reallocations
relocatedSites = new List <SiteShiftInfo>(_controlData.Source.Bounds.RowCount +
_controlData.Source.Bounds.ColumnCount + 10);
if (insertLoc.Column != sourceLoc.Column)
{
translateBy = data.Site.ActualWidth + data.Site.Margin.Width();
if (insertLoc.Column < sourceLoc.Column)
{
step = 1;
}
else
{
step = -1;
translateBy = -translateBy;
}
for (i = insertLoc.Column; i != sourceLoc.Column; i += step)
{
MatrixLoc arrayIndex = _controlData.Source.Bounds.ToIndex(new MatrixLoc(sourceLoc.Row, i));
WidgetSiteControl ctrl = _controlData.SiteGrid[arrayIndex];
relocatedSites.Add(new SiteShiftInfo()
{
site = ctrl, widget = (Data.WidgetData)ctrl.Content,
translateX = translateBy, translateY = 0.0,
newLocation = new MatrixLoc(sourceLoc.Row, i + step)
});
}
}
if (insertLoc.Row != sourceLoc.Row)
{
translateBy = data.Site.ActualHeight + data.Site.Margin.Height();
if (insertLoc.Row < sourceLoc.Row)
{
step = 1;
}
else
{
step = -1;
translateBy = -translateBy;
}
for (i = insertLoc.Row; i != sourceLoc.Row; i += step)
{
MatrixLoc arrayIndex = _controlData.Source.Bounds.ToIndex(new MatrixLoc(i, insertLoc.Column));
WidgetSiteControl ctrl = _controlData.SiteGrid[arrayIndex];
relocatedSites.Add(new SiteShiftInfo()
{
site = ctrl, widget = (Data.WidgetData)ctrl.Content,
translateY = translateBy, translateX = 0.0,
newLocation = new MatrixLoc(i + step, insertLoc.Column)
});
}
}
return(relocatedSites);
}
private void UpdateGrid(bool withAnimation)
{
TimeSpan animationTime = new TimeSpan();
List <WidgetSiteControl> sitesToRemove = new List <WidgetSiteControl>(256);
int rowCount = _controlData.Source.Bounds.RowCount;
int columnCount = _controlData.Source.Bounds.ColumnCount;
ResizeRowOrColumn(matrixPanel.RowDefinitions, rowCount);
ResizeRowOrColumn(matrixPanel.ColumnDefinitions, columnCount);
_controlData.SiteGrid = new Array2D <WidgetSiteControl>(rowCount, columnCount);
foreach (var child in matrixPanel.Children)
{
WidgetSiteControl site = child as WidgetSiteControl;
if (site == null)
{
continue;
}
if (!_controlData.Source.Bounds.Contains(site.Location))
{
if (withAnimation)
{
MatrixSize siteDistance = _controlData.Source.Bounds.Distance(site.Location);
TranslateTransform transform = (TranslateTransform)((TransformGroup)site.RenderTransform).Children[1];
transform.Y = site.HeightWithMargin * siteDistance.RowCount;
transform.X = site.WidthWithMargin * siteDistance.ColumnCount;
AnimateSiteScaleTransform(site, ref animationTime, 1, 0,
new EventHandler((o, e) => {
matrixPanel.Children.Remove(site);
}));
}
else
{
sitesToRemove.Add(site);
}
}
else
{
MatrixLoc arrayIndex = _controlData.Source.Bounds.ToIndex(site.Location);
_controlData.SiteGrid[arrayIndex] = site;
site.UpdateGridPosition();
}
}
foreach (var site in sitesToRemove)
{
matrixPanel.Children.Remove(site);
}
foreach (MatrixLoc loc in _controlData.Source.Bounds)
{
MatrixLoc arrayIndex = _controlData.Source.Bounds.ToIndex(loc);
if (_controlData.SiteGrid[arrayIndex] == null)
{
var site = CreateWidgetSite(loc, withAnimation, ref animationTime);
_controlData.SiteGrid[arrayIndex] = site;
}
_controlData.SiteGrid[arrayIndex].Content = _controlData.Source[loc];
}
}