public VirtualSchemaContainer()
{
// InitializeComponent();
scroller = new ScrollViewer();
scroller.HorizontalScrollBarVisibility = ScrollBarVisibility.Visible;
scroller.VerticalScrollBarVisibility = ScrollBarVisibility.Visible;
scroller.CanContentScroll = true;
Child = scroller;
grid = new VirtualCanvas();
scroller.Content = grid;
grid.SmallScrollIncrement = new Size(_tileWidth + _tileMargin, _tileHeight + _tileMargin);
//Scroller.Content = grid;
object v = scroller.GetValue(ScrollViewer.CanContentScrollProperty);
Canvas target = grid.ContentCanvas;
zoom = new MapZoom(target);
pan = new Pan(target, zoom);
rectZoom = new RectangleSelectionGesture(target, zoom, System.Windows.Input.ModifierKeys.Control);
rectZoom.ZoomSelection = true;
autoScroll = new AutoScroll(target, zoom);
zoom.ZoomChanged += new EventHandler(OnZoomChanged);
grid.VisualsChanged += new EventHandler <VisualChangeEventArgs>(OnVisualsChanged);
//ZoomSlider.ValueChanged += new RoutedPropertyChangedEventHandler<double>(OnZoomSliderValueChanged);
grid.Scale.Changed += new EventHandler(OnScaleChanged);
grid.Translate.Changed += new EventHandler(OnScaleChanged);
grid.Background = new SolidColorBrush(Color.FromRgb(0xd0, 0xd0, 0xd0));
grid.ContentCanvas.Background = Brushes.White;
}
private void Init()
{
if (Document.DocumentMode == DocumentMode.Auto)
{
List <Node> nodes = NodeFactory.CreateNodes(30);
ContentControl.PopulateNodes(nodes);
LinkFactory.Nodes = nodes;
ContentControl.PopulateLinks(LinkFactory.CreateLinks(60));
}
Canvas target = ContentControl.ContentCanvas;
zoom = new MapZoom(target);
pan = new Pan(target, zoom);
rectZoom = new RectangleSelectionGesture(target, zoom, ModifierKeys.Control);
rectZoom.ZoomSelection = true;
autoScroll = new AutoScroll(target, zoom);
zoom.ZoomChanged += new EventHandler(OnZoomChanged);
ContentControl.VisualsChanged += new EventHandler <VisualChangeEventArgs>(OnVisualsChanged);
//ZoomSlider.ValueChanged += new RoutedPropertyChangedEventHandler<double>(OnZoomSliderValueChanged);
ContentControl.Scale.Changed += new EventHandler(OnScaleChanged);
ContentControl.Translate.Changed += new EventHandler(OnScaleChanged);
//ContentControl.Background = new SolidColorBrush(Color.FromRgb(0xd0, 0xd0, 0xd0));
ContentControl.Background = new SolidColorBrush(Colors.White);
ContentControl.ContentCanvas.Background = Brushes.White;
Document.Nodes = ContentControl.Nodes;
Document.Links = ContentControl.Links;
}
/// <summary>
/// Construct new AutoScroll object that will scroll the given target object within it's container
/// by attaching to the mouse events of the container.
/// </summary>
/// <param name="target">The target object to scroll</param>
/// <param name="zoom">The master MapZoom object that manages the actual render transform</param>
public AutoScroll(FrameworkElement target, MapZoom zoom)
{
_container = target.Parent as Panel;
_target = target;
_container.MouseDown += new MouseButtonEventHandler(OnMouseDown);
_container.MouseMove += new MouseEventHandler(OnMouseMove);
_container.MouseWheel += new MouseWheelEventHandler(OnMouseWheel);
Keyboard.AddKeyDownHandler(_container, new KeyEventHandler(OnKeyDown));
_zoom = zoom;
}
/// <summary>
/// Construct new Pan gesture object.
/// </summary>
/// <param name="target">The target to be panned, must live inside a container Panel</param>
/// <param name="zoom"></param>
public Pan(FrameworkElement target, MapZoom zoom) {
this._target = target;
this._container = target.Parent as Panel;
if (this._container == null) {
// todo: localization
throw new ArgumentException("Target object must live in a Panel");
}
this._zoom = zoom;
_container.MouseLeftButtonDown += new MouseButtonEventHandler(OnMouseLeftButtonDown);
_container.MouseLeftButtonUp += new MouseButtonEventHandler(OnMouseLeftButtonUp);
_container.MouseMove += new MouseEventHandler(OnMouseMove);
}
public VirtualCanvasViewModel(IContainerExtension containerExtension) : base(containerExtension)
{
Views.VirtualCanvas canvas = new Views.VirtualCanvas();
Graph = canvas.Graph;
View = canvas;
Canvas target = Graph.ContentCanvas;
Zoom = new MapZoom(target);
Pan = new Pan(target, Zoom);
AutoScroll = new AutoScroll(target, Zoom);
RectZoom = new RectangleSelectionGesture(target, Zoom);
}
/// <summary>
/// Construct new RectangleSelectionGesture object for selecting things in the given target object.
/// </summary>
/// <param name="target">A FrameworkElement</param>
/// <param name="zoom">The MapZoom object that wraps this same target object</param>
public RectangleSelectionGesture(FrameworkElement target, MapZoom zoom, ModifierKeys mods)
{
_mods = mods;
_target = target;
_container = target.Parent as Panel;
if (_container == null)
{
throw new ArgumentException("Target object must live in a Panel");
}
_zoom = zoom;
_container.MouseLeftButtonDown += new MouseButtonEventHandler(OnMouseLeftButtonDown);
_container.MouseLeftButtonUp += new MouseButtonEventHandler(OnMouseLeftButtonUp);
_container.MouseMove += new MouseEventHandler(OnMouseMove);
}
private void InitializeComponent()
{
this.SuspendLayout();
//
// wpfContainerHost
//
this._wpfSchemaContainer.Dock = System.Windows.Forms.DockStyle.Fill;
this._wpfSchemaContainer.Location = new System.Drawing.Point(0, 0);
this._wpfSchemaContainer.Name = "WPFSchemaContainer";
this._wpfSchemaContainer.Size = new System.Drawing.Size(292, 273);
this._wpfSchemaContainer.TabIndex = 0;
this._wpfSchemaContainer.Text = "WPFSchemaContainer";
this._wpfSchemaContainer.Child.KeyDown += new System.Windows.Input.KeyEventHandler(WpfKeyDown);
this.XamlView = new TextBox
{
Dock = System.Windows.Forms.DockStyle.Bottom,
Multiline = true,
ScrollBars = ScrollBars.Both,
Size = new System.Drawing.Size(200, 200)
};
this.XamlView.Hide();
XamlView.MaxLength = int.MaxValue;
//
// SchemaView
//
this.ClientSize = new System.Drawing.Size(292, 273);
this.Controls.Add(this._wpfSchemaContainer);
this.Controls.Add(XamlView);
this.Name = "SchemaView";
this.ResumeLayout(false);
this.UndoBuff = new BaseUndoBuffer(this);
this.SelectionManager = new SchemaSelectionManager(this);
_documentMenuContext = new MenuCommandContext(contextMenu);
this.ContextMenuStrip = contextMenu;
//CommandManager.documentMenuContext = _documentMenuContext;////????????????????????????????
this._wpfSchemaContainer.Child.AllowDrop = true;
this._wpfSchemaContainer.Child.DragEnter += new System.Windows.DragEventHandler(Child_DragEnter);
this._wpfSchemaContainer.Child.Drop += new System.Windows.DragEventHandler(Child_Drop);
ZoomManager = new MapZoom(MainPanel);
CreateCommands();
MainPanel.Loaded += new RoutedEventHandler(MainCanvas_Loaded);
}
public ZoomVirtualized()
{
InitializeComponent();
canvas.ContentCanvas.Background = FindResource("brush") as Brush;
var zoom = new MapZoom(canvas.ContentCanvas);
int x = 0;
int y = 200;
for(int i = 0;i < 10000;i++)
{
var e = new Grid { Width = 100, Height = 100 ,ClipToBounds = false};
var el = new Ellipse { Fill = Brushes.Red, Stroke = Brushes.Black, StrokeThickness = 2 };
e.Children.Add(el);
var t = new TextBlock { Text = i.ToString(), FontSize = 30 , ClipToBounds = false , VerticalAlignment = System.Windows.VerticalAlignment.Center,
HorizontalAlignment = System.Windows.HorizontalAlignment.Center};
e.Children.Add(t);
VirtualCanvas.SetX(e,x * 100);
VirtualCanvas.SetY(e, Math.Sin(i) * 200 + y);
e.CacheMode = new BitmapCache();
canvas.VirtualChildren.Add(e);
var zoomProperty = DependencyPropertyDescriptor.FromProperty(TouchScrollViewer.ScrollViewerZoomProperty, typeof(Grid));
zoomProperty.AddValueChanged(e, new EventHandler(ZoomChanged));
e.RenderTransformOrigin = new Point(0.5,0.5);
e.RenderTransform = new ScaleTransform();
//el.Loaded += e_Loaded;
x++;
if (i % 500 == 0)
{
x = 0;
y += 500;
}
}
//LayoutUpdated += ZoomTest_LayoutUpdated;
scroll.ScrollChanged += scroll_ScrollChanged;
}
public void nextMapZoom()
{
Array values = Enum.GetValues(typeof(MapZoom));
int index = Array.IndexOf(values, mapZoom);
index = (index + 1) % values.Length;
mapZoom = (MapZoom)values.GetValue(index);
}
/// <summary>
/// 计算下载任务列表
/// </summary>
public void CalculateQuest()
{
// 先按多边形分组，一组点可能组成多个多边形
var points = m_points;
//while (points.Any())
//{
// var index = points.ToList().LastIndexOf(points.First());
// if (index == 0)
// {
// if (points.Any())
// {
// File.AppendAllLines("points.txt", points.Select(o=>$"{o.X},{o.Y}"));
// }
// break;
// }
// var region = new MercatorRegion(points.Take(index + 1));
// m_mercatorRegions.Add(region);
// points = points.Skip(index + 1).ToList();
//}
if (!m_mercatorRegions.Any())
{
throw new ArgumentException("无法构建成多边形，请检查点是否闭合");
}
// 只计算最大层，其余层通过缩小计算得出
var tileRegionList = m_mercatorRegions.Select(o => o.GetTileRegion(MaxZoom));
var segments = tileRegionList.Aggregate(Enumerable.Empty <TileSegment>(), (current, region) => current.Concat(region.GetTileSegments())).ToList();
var minY = (long)Math.Floor(segments.Min(o => o.MinY));
var maxY = (long)Math.Floor(segments.Max(o => o.MaxY));
// 每个Y值计算一次交点
var taskGroup = new MapZoom(MaxZoom);
for (var i = minY; i <= maxY; i++)
{
var y = i;
var matchSegments = segments.Where(o => (o.MaxY >= y) && (o.MinY <= y));
var intersectList = new List <TilePoint>();
foreach (var s in matchSegments)
{
intersectList.Add(s.IntersectY(y));
}
// 分解任务
intersectList = intersectList.OrderBy(o => o.X).ToList();
for (var index = 0; index < intersectList.Count; index += 2)
{
var x1 = (long)Math.Floor(intersectList[index].X);
var x2 = (long)Math.Floor(intersectList[index + 1].X);
var task = new MapLine
{
StartX = x1,
EndX = x2,
Y = y,
Zoom = MaxZoom
};
taskGroup.AddTask(task);
}
}
// 将线段两点加入任务组
foreach (var s in segments)
{
taskGroup.AddTask(GetTaskFromTilePoint(s.Point1, MaxZoom));
taskGroup.AddTask(GetTaskFromTilePoint(s.Point2, MaxZoom));
}
// 将线段所有x轴点加入任务组
var minX = (long)Math.Floor(segments.Min(o => o.MinX));
var maxX = (long)Math.Floor(segments.Max(o => o.MaxX));
for (var i = minX; i <= maxX; i++)
{
var x = i;
var matchSegments = segments.Where(o => (o.MaxX >= x) && (o.MinX <= x));
foreach (var s in matchSegments)
{
taskGroup.AddTask(GetTaskFromTilePoint(s.IntersectX(x), MaxZoom));
}
}
// 整合任务组
m_zoomTasks.Add(taskGroup);
var tg = taskGroup;
for (var index = MaxZoom - 1; index >= MinZoom; index--)
{
tg = tg.ScaleTo(index);
m_zoomTasks.Add(tg);
}
}
