private VideoPanelItem findAVideoPanel(SplitScreenNode node)
{
VideoPanelItem panel = null;
if (_garbageItems.Count > 0)
{
panel = _garbageItems[_garbageItems.Count - 1];
_garbageItems.RemoveAt(_garbageItems.Count - 1);
Console.WriteLine("GetPanel from Garbage!");
}
else
{
panel = new VideoPanelItem(ViewModel.CanItemClose);
}
panel.ViewModel.CanClose = ViewModel.CanItemClose;
if (!string.IsNullOrWhiteSpace(node.VideoId))
{
panel.PlayVideo(node.VideoId);
}
//绑定属性
panel.SetBinding(Grid.RowProperty, CreateBinding(node, BindingMode.TwoWay, nameof(node.Row)));
panel.SetBinding(Grid.ColumnProperty, CreateBinding(node, BindingMode.TwoWay, nameof(node.Column)));
panel.SetBinding(Grid.RowSpanProperty, CreateBinding(node, BindingMode.TwoWay, nameof(node.RowSpan)));
panel.SetBinding(Grid.ColumnSpanProperty, CreateBinding(node, BindingMode.TwoWay, nameof(node.ColumnSpan)));
panel.ViewModel.SplitScreenNode = node;
SetDragDropParam(panel);
//监听鼠标点击事件，以隐藏VideoControl的控制面板。
panel.PreviewMouseDown += Panel_PreviewMouseDown;
return(panel);
}
private void updateOpacity(VideoPanelItem vpi, double opacity)
{
if (vpi?.ViewModel?.ControlViewModel != null)
{
vpi.ViewModel.ControlViewModel.Opacity = opacity;
}
}
private void BindElementProp(VideoPanelItem vpi)
{
//按钮绑定。
MultiBinding multi = new MultiBinding();
multi.Mode = BindingMode.OneWay;
multi.Converter = new MultiConverter();
multi.Bindings.Add(CreateBinding(vpi, BindingMode.OneWay, "DataContext.ControlViewModel.IsVisible"));
multi.Bindings.Add(CreateBinding(vpi, BindingMode.OneWay, "DataContext.ControlViewModel.IsFullScreen"));
btnToNormal.SetBinding(VisibilityProperty, multi);
Binding binding = CreateBinding(vpi, BindingMode.TwoWay, "DataContext.ControlViewModel.IsFullScreen");
btnToNormal.SetBinding(ToggleButton.IsCheckedProperty, binding);
IValueConverter converter = new InnerBoolToVisibility();
//全屏窗绑定
binding = CreateBinding(vpi, BindingMode.OneWay, "DataContext.ControlViewModel.IsFullScreen");
binding.Converter = converter;
binding.ConverterParameter = "AND";
gridFull.SetBinding(VisibilityProperty, binding);
//弹出窗绑定
binding = CreateBinding(vpi, BindingMode.OneWay, "DataContext.ControlViewModel.IsFullScreen");
binding.Converter = converter;
binding.ConverterParameter = "XOR";
canvasPopup.SetBinding(VisibilityProperty, binding);
//源父窗体绑定
_parent.SetBinding(VisibilityProperty, binding);
}
private bool TryCalcToSize(VideoPanelItem vpi, ref Size toSize)
{
if (vpi.ActualWidth == 0 || vpi.ActualHeight == 0)
{
return(false);
}
double toWidth = Math.Min(AppConstants.VideoControlMinWidth, this.ActualWidth);
double toHeight = Math.Min(AppConstants.VideoControlMinHeight, this.ActualHeight);
double ratioW = toWidth / vpi.ActualWidth;
double ratioH = toHeight / vpi.ActualHeight;
double ratio = Math.Max(ratioW, ratioH);
if (ratio <= 1)
{
return(false);
}
toWidth = vpi.ActualWidth * ratio;
toHeight = vpi.ActualHeight * ratio;
if (toWidth > this.ActualWidth - AppConstants.VideoControlMargin * 2)
{
toWidth = this.ActualWidth - AppConstants.VideoControlMargin * 2;
}
if (toHeight > this.ActualHeight - AppConstants.VideoControlMargin * 2)
{
toHeight = this.ActualHeight - AppConstants.VideoControlMargin * 2;
}
toSize = new Size(toWidth, toHeight);
return(true);
}
public void Dragging(DragInfo info)
{
VideoPanelItem vpi = info.Source as VideoPanelItem;
if (info.Effects == DragDropEffects.None)
{
if (!IsCursorInWindow(info) && vpi.ViewModel != null && vpi.ViewModel.IsInEditStatus)
{
Mouse.SetCursor(Cursors.Hand);
info.Handled = true;
}
}
else
{
Mouse.SetCursor(Cursors.SizeAll);
info.Handled = true;
}
if (vpi != null)
{
if (info.Effects.HasFlag(DragDropEffects.Copy))
{
updateOpacity(vpi, 1);
}
else
{
updateOpacity(vpi, 0);
}
}
}
private int _delayTime = 300; //延时时间。
public void DragOver(DropInfo info)
{
_mouseOn = true;
if (info.KeyStates.HasFlag(DragDropKeyStates.ControlKey))
{
info.Effects = DragDropEffects.Copy;
}
else
{
info.Effects = DragDropEffects.Move;
}
if (!_accepted)
{
VideoPanelItem vpi = info.Target as VideoPanelItem;
VideoPanelItem srcVpi = info.Source as VideoPanelItem;
//延时拖动接收。
if (Environment.TickCount - _startTick < _delayTime)
{
return;
}
string videoId = info.Data as string;
if (videoId == null && info.DataType.ToUpper().EndsWith(".STRING"))
{
videoId = info.GetDataFromJson <string>();
}
if (videoId == null)
{
info.Effects = DragDropEffects.None;
return;
}
if (vpi != null && videoId != null && !vpi.Equals(srcVpi))
{
_videoMode = vpi.ViewModel.ControlViewModel;
DropAdorner = CreateAdorner(vpi);
DropAdorner.VisualCover.Visibility = Visibility.Hidden;
//
Point toPnt = new Point(0, 0);
double scaleX = 1;
double scaleY = 1;
if (srcVpi != null && IsBrothers(srcVpi, vpi))
{
//隐藏源的视频。
if (vpi.VideoControl != null && vpi.ViewModel.ControlViewModel.IsVisible)
{
_videoMode.Opacity = 0;
DropAdorner.VisualCover.Visibility = Visibility.Visible;
toPnt = vpi.PointFromScreen(srcVpi.PointToScreen(new Point(0, 0)));
scaleX = srcVpi.ActualWidth / vpi.ActualWidth;
scaleY = srcVpi.ActualHeight / vpi.ActualHeight;
}
}
//启动动画。
Storyboard sb = CreateStoryboard(toPnt, scaleX, scaleY, 1);
sb.Begin(DropAdorner, true);
_accepted = true;
}
}
}
public void StopAll()
{
for (int i = 0; i < gridMain.Children.Count; i++)
{
VideoPanelItem item = gridMain.Children[i] as VideoPanelItem;
item?.PlayVideo(null);
}
}
private void setPanelEditStatus(bool editting)
{
for (int i = 0; i < gridMain.Children.Count; i++)
{
VideoPanelItem item = gridMain.Children[i] as VideoPanelItem;
item.ViewModel.IsInEditStatus = editting;
}
}
private void RemoveVideoFromInitParent(VideoPanelItem vpi)
{
_parent = vpi.Parent as Panel;
_lastIndex = _parent.Children.IndexOf(vpi);
_parent.Children.Remove(vpi);
_vpi = vpi;
_vpi.SetValue(DragDropTool.AllowDragProperty, false);
_parent.Visibility = Visibility.Collapsed;
}
public void ClearVideoPanel()
{
if (_vpi != null)
{
UnbindElementProp();
AddVideoToInitParent();
_vpi = null;
HideCurrent();
}
}
public void UpdateSelectedVideos()
{
List <string> videoIds = ViewModel?.SplitScreenData?.Nodes?.Where(e => !string.IsNullOrWhiteSpace(e.VideoId)).Select(v => v.VideoId).ToList();
for (int i = 0; i < gridMain.Children.Count; i++)
{
VideoPanelItem item = gridMain.Children[i] as VideoPanelItem;
item.ViewModel.UpdateDisplayVideos(videoIds);
}
}
private void SearchPanel_Visible(object sender, RoutedEventArgs e)
{
VideoPanelItem vpi = e.Source as VideoPanelItem;
if (vpi != null)
{
if (vpi.ViewModel.SearchedResultModel.IsVisible)
{
topCover.InsertVideoPanel(vpi, false);
}
}
}
public void InsertVideoPanel(VideoPanelItem vpi, bool isFullScreen)
{
bool inserted = isFullScreen ? InsertFullScreen(vpi) : InsertPopup(vpi);
if (inserted)
{
_onScaling = false;
DisplayCurrent();
_isInitFullScreen = isFullScreen;
BindElementProp(vpi);
}
}
private void VideoControl_FullScreen(object sender, RoutedEventArgs e)
{
VideoPanelItem vpi = e.Source as VideoPanelItem;
if (vpi != null)
{
VideoControl vc = e.OriginalSource as VideoControl;
if (vc.ViewModel.IsFullScreen)
{
topCover.InsertVideoPanel(vpi, true);
}
}
}
public void DragStart(DragInfo info)
{
VideoPanelItem vpi = info.Source as VideoPanelItem;
if (vpi.VideoControl != null)
{
Binding binding = new Binding();
binding.Mode = BindingMode.OneWay;
binding.Source = vpi.VideoControl.videoDisp;
vpi.SetBinding(DragDropVisual.VisualProperty, binding);
_topWin = FindTopWindow(vpi);
updateOpacity(vpi, 0);
}
}
private async Task <VideoPanelItem[]> CreateVideoPanels(SplitScreenInfo data)
{
DateTime timeStart = DateTime.Now;
VideoPanelItem[] vpis = new VideoPanelItem[data.Nodes.Length];
for (int i = 0; i < data.Nodes.Length; i++)
{
var node = data.Nodes[i];
VideoPanelItem panel = findAVideoPanel(node);
vpis[i] = panel;
await Task.Delay(10);
}
Console.WriteLine("Load Count:{0} UsedTime:{1}", gridMain.Children.Count, DateTime.Now - timeStart);
return(vpis);
}
private void VideoControl_PanelVisible(object sender, RoutedEventArgs e)
{
VideoPanelItem vpi = e.Source as VideoPanelItem;
if (vpi != null)
{
VideoControl vc = e.OriginalSource as VideoControl;
if (vc.ViewModel.IsControlPanelVisible && !vc.ViewModel.IsFullScreen)
{
topCover.InsertVideoPanel(vpi, false);
}
//else if (string.IsNullOrWhiteSpace(vc.ViewModel.VideoId) && !vc.ViewModel.IsFullScreen)
// topCover.ClearVideoPanel();
}
}
VideoPanelItem getFirstBlankItem()
{
List <ItemSequence> list = new List <ItemSequence>();
for (int i = 0; i < gridMain.Children.Count; i++)
{
VideoPanelItem item = gridMain.Children[i] as VideoPanelItem;
int split = ViewModel.SplitScreenData.Split;
if (item != null && !item.IsPlaying)
{
int row = (int)item.GetValue(Grid.RowProperty);
int col = (int)item.GetValue(Grid.ColumnProperty);
list.Add(new ItemSequence(item, row * split + col));
}
}
list = list.OrderBy(e => e.SerialNumber).ToList();
return(list.FirstOrDefault()?.PanelItem);
}
public void Drop(DropInfo info)
{
_mouseOn = false;
_accepted = false;
ResetAdorner();
if (_videoMode != null)
{
_videoMode.Opacity = 1;
_videoMode = null;
}
string videoId = info.Data as string;
if (videoId == null)
{
videoId = info.GetDataFromJson <string>();
}
if (videoId != null)
{
VideoPanelItem vpi = info.Target as VideoPanelItem;
if (vpi != null)
{
VideoPanelItem srcVpi = info.Source as VideoPanelItem;
if (srcVpi != null && !srcVpi.Equals(vpi) &&
!info.KeyStates.HasFlag(DragDropKeyStates.ControlKey))
{
//没有交换则直接设置ID。
if (!Exchange(srcVpi, vpi))
{
vpi.PlayVideo(videoId);
info.Effects = DragDropEffects.Copy;
}
else
{
info.Effects = DragDropEffects.Move;
}
}
else
{
vpi.PlayVideo(videoId);
info.Effects = DragDropEffects.Move;
}
}
}
}
private bool ShowVideoWin(DragInfo info, VideoPanelItem vpi)
{
if (_topWin != null)
{
string videoID = (string)info.Data;
PopupWinModel model = new PopupWinModel(videoID);
PopupWin popup = new PopupWin();
popup.IsTopmost = true;
popup.DataContext = model;
Point startPos = info.GetPosition(vpi);
startPos = vpi.PointToScreen(startPos);
startPos = new Point(startPos.X - vpi.ActualWidth / 2, startPos.Y - vpi.ActualHeight / 2);
if (startPos.X < 0)
{
startPos.X = 0;
}
if (startPos.Y < 0)
{
startPos.Y = 0;
}
popup.Left = startPos.X;
popup.Top = startPos.Y;
if (vpi.ActualWidth < AppConstants.VideoControlMinWidth)
{
popup.Width = AppConstants.VideoControlMinWidth;
if (vpi.ActualHeight == 0)
{
popup.Height = AppConstants.VideoControlMinWidth * 0.75;
}
else
{
popup.Height = vpi.ActualHeight * (AppConstants.VideoControlMinWidth / vpi.ActualWidth);
}
}
else
{
popup.Width = vpi.ActualWidth;
popup.Height = vpi.ActualHeight;
}
popup.Show();
return(true);
}
return(false);
}
//设置视频窗口的可拖拽属性。
private void SetDragDropParam(VideoPanelItem vpi)
{
vpi.SetValue(DragDropTool.AllowDropProperty, true);
vpi.SetValue(DragDropTool.DropHandlerProperty, new VideoPanelDropHandler());
vpi.SetValue(DragDropTool.DragHandlerProperty, new VideoPanelDragHandler());
//允许拖动
Binding binding = CreateBinding(vpi.DataContext, BindingMode.OneWay, "ControlViewModel.IsVisible");
vpi.SetBinding(DragDropTool.AllowDragProperty, binding);
//设置拖动数据
binding = CreateBinding(vpi.DataContext, BindingMode.OneWay, "ControlViewModel.VideoId");
vpi.SetBinding(DragDropData.DataProperty, binding);
//设置可视化
vpi.SetValue(DragDropVisual.ShadowVisibleProperty, true);
vpi.SetValue(DragDropVisual.ShadowColorProperty, Color.FromRgb(0, 255, 0));
vpi.SetValue(DragDropVisual.BorderThicknessProperty, new Thickness(2));
}
private void Panel_PreviewMouseDown(object sender, MouseButtonEventArgs e)
{
if (ViewModel.OnSwitching && !ViewModel.SwitchPaused)
{
ViewModel.SwitchPaused = true;
e.Handled = true;
return;
}
VideoPanelItem item = sender as VideoPanelItem;
foreach (VideoPanelItem vpi in gridMain.Children)
{
if (!item.Equals(vpi))
{
vpi.ViewModel.ControlViewModel.IsControlPanelVisible = false;
vpi.ViewModel.SearchedResultModel.IsVisible = false;
vpi.ViewModel.PlusSignModel.IsVisible = true;
}
}
}
public void DragEnd(DragInfo info)
{
VideoPanelItem vpi = info.Source as VideoPanelItem;
if (info.Effects == DragDropEffects.None)
{
//当鼠标移出窗体且没有接收源时，打开一个新视频窗口，同时关闭源视频。
if (!IsCursorInWindow(info) && vpi.ViewModel != null && vpi.ViewModel.IsInEditStatus)
{
if (ShowVideoWin(info, vpi))
{
if (vpi.ViewModel != null && vpi.ViewModel.ControlViewModel != null)
{
vpi.ViewModel.ControlViewModel.VideoId = null;
}
}
}
}
_topWin = null;
updateOpacity(vpi, 1);
}
private bool InsertPopup(VideoPanelItem vpi)
{
Size toSize = default(Size);
if (!TryCalcToSize(vpi, ref toSize))
{
return(false);
}
Point fromPos = vpi.TranslatePoint(new Point(), this);
Point toPos = CalcToLocation(toSize);
RemoveVideoFromInitParent(vpi);
RecordVideoPreLocation(vpi, fromPos);
gridMain.Children.Add(vpi);
//动画
Storyboard sb = CreateStoryboard(vpi.ActualWidth, toSize.Width, vpi.ActualHeight, toSize.Height, fromPos, toPos);
sb.Begin(gridMain);
return(true);
}
VideoPanelDropAdorner CreateAdorner(VideoPanelItem vpi)
{
VideoPanelDropAdorner adorner = new VideoPanelDropAdorner(vpi, vpi.VideoControl?.videoDisp);
return(adorner);
}
private void RecordVideoPreLocation(VideoPanelItem vpi, Point fromPos)
{
//记录初始值。
_initSize = new Size(vpi.ActualWidth, vpi.ActualHeight);
_initPos = fromPos;
}
private bool InsertFullScreen(VideoPanelItem vpi)
{
RemoveVideoFromInitParent(vpi);
gridFull.Children.Add(vpi);
return(true);
}
public ItemSequence(VideoPanelItem item, int number)
{
PanelItem = item;
SerialNumber = number;
}
private void destoryVideoPanel(VideoPanelItem vpi)
{
vpi.PreviewMouseDown -= Panel_PreviewMouseDown;
vpi.ViewModel.SplitScreenNode = null;
vpi.PlayVideo(null);
}
