C# Gdk.EventMotion类代码示例

		protected override bool OnWidgetEvent (Gdk.Event evnt)
		{
			// This method is hooked to block the event as soon as possible if required
			
			if(evnt.Window.Equals (this.GdkWindow))
			{
				switch(evnt.Type)
				{
					case Gdk.EventType.ButtonPress:
					case Gdk.EventType.ButtonRelease:
					case Gdk.EventType.ThreeButtonPress:
					case Gdk.EventType.TwoButtonPress:
						Gdk.EventButton eb = new Gdk.EventButton (evnt.Handle);
						return PropagateEventGivenCoordinate (evnt, eb.X, eb.XRoot, eb.Y, eb.YRoot);
					
					case Gdk.EventType.MotionNotify:
						Gdk.EventMotion em = new Gdk.EventMotion (evnt.Handle);
						return PropagateEventGivenCoordinate (evnt, em.X, em.XRoot, em.Y, em.YRoot);
					
					case Gdk.EventType.LeaveNotify:
						foreach(Widget w in lastHoveredWidgets)
						{
							w.ProcessEvent (evnt);
						}
						lastHoveredWidgets.Clear();
						return base.OnWidgetEvent (evnt);
				}
			}
			return base.OnWidgetEvent (evnt);
		}

 void ShowTooltip(EventMotion evnt)
 {
     HideTooltip ();
     tooltipTimeout = GLib.Timeout.Add (500, delegate {
         ShowTooltipWindow ((int)evnt.X, (int)evnt.Y);
         return false;
     });
 }

		protected override bool OnMotionNotifyEvent (EventMotion e)
		{
			if (!buttonPressed)
				return base.OnMotionNotifyEvent (e);
			
			int winWidth, winHeight;
			this.GdkWindow.GetSize (out winWidth, out winHeight);
			
			int row = GetRowByPosition ((int) e.Y);
			
			if ((e.State & ModifierType.ControlMask) == ModifierType.ControlMask)
				SelectRow (row);
			else
				this.SelectedRow = row;
			
			return true;
		}

			protected override bool OnMotionNotifyEvent (EventMotion evnt)
			{
				TooltipText = null;
				if (dragPosition >= 0) {
					int x, y;
					widget.GetPointer (out x, out y);
					int newWidthRequest = widget.Allocation.Width - x;
					newWidthRequest = Math.Min (widget.Allocation.Width - (int)widget.Editor.TextViewMargin.XOffset, Math.Max (leftSpacer, newWidthRequest));
					
					WidthRequest = newWidthRequest;
					QueueResize ();
				}
				int startLine = widget.Editor.YToLine (widget.Editor.VAdjustment.Value + evnt.Y);
				var ann = startLine > 0 && startLine <= annotations.Count ? annotations[startLine - 1] : null;
				if (ann != null)
					TooltipText = GetCommitMessage (startLine);
				
				highlightPositon = evnt.Y;
				if (highlightAnnotation != ann) {
					highlightAnnotation = ann;
					widget.QueueDraw ();
				}
				
				return base.OnMotionNotifyEvent (evnt);
			}

		protected override bool OnMotionNotifyEvent (EventMotion evnt)
		{
			var item = GetItemAt (evnt.X, evnt.Y);
			if (item != hoverItem) {
				hoverItem = item;
				QueueDraw ();
			}
			return base.OnMotionNotifyEvent (evnt);
		}

		protected override bool OnMotionNotifyEvent (EventMotion evnt)
		{
			SetHover (GetItemAt ((int)evnt.X, (int)evnt.Y));
			return true;
		}

        protected override bool OnMotionNotifyEvent(EventMotion evnt)
        {
            bool handled = false;

            handled = handled || OnPanMotionNotifyEvent (evnt);

            if (can_select)
                handled = handled || OnSelectionMotionNotifyEvent (evnt);

            return handled || base.OnMotionNotifyEvent (evnt);
        }

        protected override bool OnMotionNotifyEvent(EventMotion evnt)
        {
            var position = new Point(evnt.X, evnt.Y);

            GtkMouseDevice.Instance.SetClientPosition(position);

            var e = new RawMouseEventArgs(
                GtkMouseDevice.Instance,
                evnt.Time,
                _inputRoot,
                RawMouseEventType.Move,
                position, GetModifierKeys(evnt.State));
            Input(e);
            return true;
        }

			protected override bool OnMotionNotifyEvent (EventMotion evnt)
			{
				if (button != 0)
					MouseMove (evnt.Y);
				return base.OnMotionNotifyEvent (evnt);
			}

 /// <summary>
 /// Called on mouse move events.
 /// </summary>
 /// <param name="e">An instance that contains the event data.</param>
 /// <returns><c>true</c> if the event was handled.</returns>
 protected override bool OnMotionNotifyEvent(EventMotion e)
 {
     return this.ActualController.HandleMouseMove(this, e.ToMouseEventArgs());
 }

			protected override bool OnMotionNotifyEvent (EventMotion evnt)
			{
				bool hideButton = widget.MainEditor.Document.ReadOnly;
				Mono.TextEditor.Utils.Hunk selectedHunk = Mono.TextEditor.Utils.Hunk.Empty;
				if (!hideButton) {
					int delta = widget.MainEditor.Allocation.Y - Allocation.Y;
					if (Diff != null) {
						foreach (var hunk in Diff) {
							double z1 = delta + fromEditor.LineToY (hunk.RemoveStart) - fromEditor.VAdjustment.Value;
							double z2 = delta + fromEditor.LineToY (hunk.RemoveStart + hunk.Removed) - fromEditor.VAdjustment.Value;
							if (z1 == z2)
								z2 = z1 + 1;
	
							double y1 = delta + toEditor.LineToY (hunk.InsertStart) - toEditor.VAdjustment.Value;
							double y2 = delta + toEditor.LineToY (hunk.InsertStart + hunk.Inserted) - toEditor.VAdjustment.Value;
	
							if (y1 == y2)
								y2 = y1 + 1;
							double x, y, w, h;
							GetButtonPosition (hunk, y1, y2, z1, z2, out x, out y, out w, out h);
	
							if (evnt.X >= x && evnt.X < x + w && evnt.Y >= y && evnt.Y < y + h) {
								selectedHunk = hunk;
								TooltipText = GettextCatalog.GetString ("Revert this change");
								QueueDrawArea ((int)x, (int)y, (int)w, (int)h);
								break;
							}
						}
					}
				} else {
					selectedHunk = Mono.TextEditor.Utils.Hunk.Empty;
				}

				if (selectedHunk.IsEmpty)
					TooltipText = null;

				if (this.selectedHunk != selectedHunk) {
					this.selectedHunk = selectedHunk;
					QueueDraw ();
				}
				return base.OnMotionNotifyEvent (evnt);
			}

		protected override bool OnMotionNotifyEvent (EventMotion evnt)
		{
			if (!item.Disabled && !Selected) {
				Selected = true;
				if (SelectedChanged != null)
					SelectedChanged (this, EventArgs.Empty);
				QueueDraw ();
			}
			return false;
		}

        protected override bool OnMotionNotifyEvent(EventMotion evnt)
        {
            // First check if we need to draw a box for multiple selection via dragging
            if (_dragStartTime != 0 && evnt.Time - _dragStartTime > 500)
            {
                Console.WriteLine("Motion {0}", _dragStartTime);
                TreePath endPath;
                GetPathAtPos((int)evnt.X, (int)evnt.Y, out endPath);
                if (!GetPathAtPos((int)evnt.X, (int)evnt.Y, out endPath))
                {
                    GetPathAtPos(1, 1, out endPath);
                }
                if (_dragStartPath.Compare(endPath) < 0)
                {
                    Selection.UnselectAll();
                    Selection.SelectRange(_dragStartPath, endPath);
                }
                else
                {
                    Selection.UnselectAll();
                    Selection.SelectRange(endPath, _dragStartPath);
                }
            }

            // Now start logic for tooltips
            if (!evnt.Window.Equals(BinWindow))
                goto hide;

            if (DateTime.Now.Subtract(TimeSpan.FromMilliseconds(500)) < _scrollStarted)
                goto hide;

            TreePath path;
            TreeViewColumn column;
            int cellX, cellY;
            if (!GetPathAtPos((int) evnt.X, (int) evnt.Y, out path, out column, out cellX, out cellY))
                goto hide;

            var cellRenderers = column.CellRenderers.Where(c =>
            {
                int startPos, width;
                column.CellGetPosition(c, out startPos, out width);
                return startPos < cellX && cellX < startPos + width;
            });

            var cellRendererText = (CellRendererText)cellRenderers.FirstOrDefault();

            TreeIter iter;
            Model.GetIter(out iter, path);
            column.CellSetCellData(Model, iter, false, false);

            if (cellRendererText != null)
            {
                Label label = Tooltip.Label;
                label.Text = cellRendererText.Text;
                label.SetPadding((int)cellRendererText.Xpad, (int)cellRendererText.Ypad);
                label.SizeRequest();
                label.Show();

                int listOriginX, listOriginY, labelWidth, labelHeight, labelLayoutOffsetX, labelLayoutOffsetY;
                BinWindow.GetOrigin(out listOriginX, out listOriginY);
                Rectangle cellRectangle = GetCellArea(path, column);
                var x = listOriginX + cellRectangle.X;
                var y = listOriginY + cellRectangle.Y;

                label.Layout.GetPixelSize(out labelWidth, out labelHeight);
                label.GetLayoutOffsets(out labelLayoutOffsetX, out labelLayoutOffsetY);
                labelWidth += labelLayoutOffsetX;
                labelWidth += (int)cellRendererText.Xpad;

                var height = cellRectangle.Height;
                Tooltip.Move(x, y);
                Tooltip.SetSizeRequest(labelWidth, height);
                Tooltip.Resize(labelWidth, height);

                if (labelWidth < cellRectangle.Width)
                    goto hide;
                Tooltip.Show();
                goto returnBase;
            }

            hide:
            Tooltip.Hide();

            returnBase:
            return base.OnMotionNotifyEvent(evnt);
        }

 protected override bool OnMotionNotifyEvent(EventMotion ev)
 {
     Gdk.ModifierType state = (Gdk.ModifierType)ev.State;
     if ((state & Gdk.ModifierType.Button1Mask) != 0) {
         if ((state & Gdk.ModifierType.ShiftMask) != 0) {
             X = dragStartX + (int)((dragStartMouseX - ev.X) / Scale);
             Y = dragStartY + (int)((dragStartMouseY - ev.Y) / Scale);
         } else {
             if (PixelQueried != null) {
                 int pixelX, pixelY;
                 MouseToImageCoords (ev.X, ev.Y, out pixelX, out pixelY);
                 PixelQueried (this, pixelX, pixelY);
             }
         }
         return true;
     }
     return false;
 }

		protected override bool OnMotionNotifyEvent (EventMotion evnt)
		{
			if (draggingTab && mouseHasLeft) {
				var sr = GetScreenRect ();
				sr.Height = BarHeight;
				sr.Inflate (30, 30);

				int x, y;
				Gdk.Display.Default.GetPointer (out x, out y);

				if (x < sr.Left || x > sr.Right || y < sr.Top || y > sr.Bottom) {
					draggingTab = false;
					mouseHasLeft = false;
					CreatePlaceholderWindow ();
				}
			}

			string newTooltip = null;
			if (placeholderWindow != null) {
				int x, y;
				Gdk.Display.Default.GetPointer (out x, out y);
				placeholderWindow.MovePosition (x, y);
				return base.OnMotionNotifyEvent (evnt);
			}

			if (!draggingTab) {
				var t = FindTab ((int)evnt.X, (int)evnt.Y);

				// If the user clicks and drags on the 'x' which closes the current
				// tab we can end up with a null tab here
				if (t == null) {
					TooltipText = null;
					return base.OnMotionNotifyEvent (evnt);
				}
				SetHighlightedTab (t);

				var newOver = IsOverCloseButton (t, (int)evnt.X, (int)evnt.Y);
				if (newOver != overCloseButton) {
					overCloseButton = newOver;
					QueueDraw ();
				}
				if (!overCloseButton && !draggingTab && buttonPressedOnTab) {
					draggingTab = true;
					mouseHasLeft = false;
					dragXProgress = 1.0f;
					int x = (int)evnt.X;
					dragOffset = x - t.Allocation.X;
					dragX = x - dragOffset;
					lastDragX = (int)evnt.X;
				} else if (t != null)
					newTooltip = t.Tooltip;
			} else if (evnt.State.HasFlag (ModifierType.Button1Mask)) {
				dragX = (int)evnt.X - dragOffset;
				QueueDraw ();

				var t = FindTab ((int)evnt.X, TopPadding + 3);
				if (t == null) {
					var last = (DockNotebookTab)notebook.Tabs.Last ();
					if (dragX > last.Allocation.Right)
						t = last;
					if (dragX < 0)
						t = (DockNotebookTab)notebook.Tabs.First ();
				}
				if (t != null && t != notebook.CurrentTab && (
				        ((int)evnt.X > lastDragX && t.Index > notebook.CurrentTab.Index) ||
				        ((int)evnt.X < lastDragX && t.Index < notebook.CurrentTab.Index))) {
					t.SaveAllocation ();
					t.SaveStrength = 1;
					notebook.ReorderTab ((DockNotebookTab)notebook.CurrentTab, t);

					t.Animate ("TabMotion",
						f => t.SaveStrength = f,
						1.0f,
						0.0f,
						easing: Easing.CubicInOut);
				}
				lastDragX = (int)evnt.X;
			}

			if (newTooltip != null && TooltipText != null && TooltipText != newTooltip)
				TooltipText = null;
			else
				TooltipText = newTooltip;

			return base.OnMotionNotifyEvent (evnt);
		}