C# GuiWidget类代码示例

		public void BottomAndTopTextControl(double controlPadding, double buttonMargin)
		{
			GuiWidget containerControl = new GuiWidget(200, 300);
			containerControl.DoubleBuffer = true;
			containerControl.BackBuffer.NewGraphics2D().Clear(RGBA_Bytes.White);
			TextWidget controlButton1 = new TextWidget("text1");
			controlButton1.Margin = new BorderDouble(buttonMargin);
			controlButton1.OriginRelativeParent = new VectorMath.Vector2(-controlButton1.LocalBounds.Left, -controlButton1.LocalBounds.Bottom + controlPadding + buttonMargin);
			controlButton1.LocalBounds = new RectangleDouble(controlButton1.LocalBounds.Left, controlButton1.LocalBounds.Bottom, controlButton1.LocalBounds.Right, controlButton1.LocalBounds.Bottom + containerControl.Height - (controlPadding + buttonMargin) * 2);
			containerControl.AddChild(controlButton1);
			containerControl.OnDraw(containerControl.NewGraphics2D());

			GuiWidget containerTest = new GuiWidget(200, 200);
			containerTest.Padding = new BorderDouble(controlPadding);
			containerTest.DoubleBuffer = true;
			containerTest.BackBuffer.NewGraphics2D().Clear(RGBA_Bytes.White);

			TextWidget testButton1 = new TextWidget("text1");
			testButton1.Margin = new BorderDouble(buttonMargin);
			testButton1.VAnchor = VAnchor.ParentBottom | VAnchor.ParentTop;
			containerTest.AddChild(testButton1);
			containerTest.OnDraw(containerTest.NewGraphics2D());
			OutputImages(containerControl, containerTest);

			// now change it's size
			containerTest.LocalBounds = containerControl.LocalBounds;
			containerTest.BackBuffer.NewGraphics2D().Clear(RGBA_Bytes.White);

			containerTest.OnDraw(containerTest.NewGraphics2D());
			OutputImages(containerControl, containerTest);

			Assert.IsTrue(containerControl.BackBuffer != null, "When we set a guiWidget to DoubleBuffer it needs to create one.");
			Assert.IsTrue(containerControl.BackBuffer == containerTest.BackBuffer, "The Anchored widget should be in the correct place.");
		}

    public GuiDisplayObject(SortedList args)
    {
        //Pflichtfelde
        if(args.ContainsKey("rect") == false){
            throw new Exception("No Rect defined");
        }

        //Text
        _text = "";
        if(args.ContainsKey("text")){
            _text = (string) args["text"];
        }

        _args = args;
        _id = _idCounter++;
        _go2D = new GameObject("2D GameObject - " + _id);

        //Position
        _rect = (Rect) args["rect"];
        _widget = _go2D.AddComponent<GuiWidget>();
        _widget.LocalPosition = new Vector2(_rect.x, _rect.y);
        _widget.Dimension = new Vector2(_rect.width, _rect.height);

        //make active
        Visible = true;
    }

		private void OutputImage(GuiWidget widgetToOutput, string fileName)
		{
			if (saveImagesForDebug)
			{
				OutputImage(widgetToOutput.BackBuffer, fileName);
			}
		}

		private void OutputImages(GuiWidget control, GuiWidget test)
		{
			if (saveImagesForDebug)
			{
				ImageTgaIO.Save(control.BackBuffer, "image-control.tga");
				ImageTgaIO.Save(test.BackBuffer, "image-test.tga");
			}
		}

 public ContainerWidget(Game game, GuiWidget[] widgets = null)
     : base(game)
 {
     if (widgets != null) {
         Widgets.AddRange(widgets);
     }
     UpdateBounds = GetType() != typeof(ContainerWidget);
 }

 protected override void OnInit()
 {
     if (Target == null) {
         Target = GetComponent<GuiWidget> ();
     }
     if (Target == null) {
         enabled = false;
     }
 }

		public void SendKey(Keys keyDown, char keyPressed, GuiWidget reciever)
		{
			KeyEventArgs keyDownEvent = new KeyEventArgs(keyDown);
			reciever.OnKeyDown(keyDownEvent);
			if (!keyDownEvent.SuppressKeyPress)
			{
				KeyPressEventArgs keyPressEvent = new KeyPressEventArgs(keyPressed);
				reciever.OnKeyPress(keyPressEvent);
			}
		}

		public void TextWidgetVisibleTest()
		{
			{
				GuiWidget rectangleWidget = new GuiWidget(100, 50);
				TextWidget itemToAdd = new TextWidget("test Item", 10, 10);
				rectangleWidget.AddChild(itemToAdd);
				rectangleWidget.DoubleBuffer = true;
				rectangleWidget.BackBuffer.NewGraphics2D().Clear(RGBA_Bytes.White);
				rectangleWidget.OnDraw(rectangleWidget.BackBuffer.NewGraphics2D());

				ImageBuffer textOnly = new ImageBuffer(75, 20, 32, new BlenderBGRA());
				textOnly.NewGraphics2D().Clear(RGBA_Bytes.White);

				textOnly.NewGraphics2D().DrawString("test Item", 1, 1);

				if (saveImagesForDebug)
				{
					ImageTgaIO.Save(rectangleWidget.BackBuffer, "-rectangleWidget.tga");
					//ImageTgaIO.Save(itemToAdd.Children[0].BackBuffer, "-internalTextWidget.tga");
					ImageTgaIO.Save(textOnly, "-textOnly.tga");
				}

				Assert.IsTrue(rectangleWidget.BackBuffer.FindLeastSquaresMatch(textOnly, 1), "TextWidgets need to be drawing.");
				rectangleWidget.Close();
			}

			{
				GuiWidget rectangleWidget = new GuiWidget(100, 50);
				TextEditWidget itemToAdd = new TextEditWidget("test Item", 10, 10);
				rectangleWidget.AddChild(itemToAdd);
				rectangleWidget.DoubleBuffer = true;
				rectangleWidget.BackBuffer.NewGraphics2D().Clear(RGBA_Bytes.White);
				rectangleWidget.OnDraw(rectangleWidget.BackBuffer.NewGraphics2D());

				ImageBuffer textOnly = new ImageBuffer(75, 20, 32, new BlenderBGRA());
				textOnly.NewGraphics2D().Clear(RGBA_Bytes.White);

				TypeFacePrinter stringPrinter = new TypeFacePrinter("test Item", 12);
				IVertexSource offsetText = new VertexSourceApplyTransform(stringPrinter, Affine.NewTranslation(1, -stringPrinter.LocalBounds.Bottom));
				textOnly.NewGraphics2D().Render(offsetText, RGBA_Bytes.Black);

				if (saveImagesForDebug)
				{
					ImageTgaIO.Save(rectangleWidget.BackBuffer, "-rectangleWidget.tga");
					//ImageTgaIO.Save(itemToAdd.Children[0].BackBuffer, "-internalTextWidget.tga");
					ImageTgaIO.Save(textOnly, "-textOnly.tga");
				}

				Assert.IsTrue(rectangleWidget.BackBuffer.FindLeastSquaresMatch(textOnly, 1), "TextWidgets need to be drawing.");
				rectangleWidget.Close();
			}
		}

		public GroupBox(GuiWidget groupBoxLabel)
			: base(HAnchor.FitToChildren, VAnchor.FitToChildren)
		{
			this.Padding = new BorderDouble(14, 14, 14, 16);
			groupBoxLabel.Margin = new BorderDouble(20, 0, 0, -this.Padding.Top);
			groupBoxLabel.VAnchor = UI.VAnchor.ParentTop;
			groupBoxLabel.HAnchor = UI.HAnchor.ParentLeft;
			base.AddChild(groupBoxLabel);

			this.groupBoxLabel = groupBoxLabel;

			clientArea = new GuiWidget(HAnchor.Max_FitToChildren_ParentWidth, VAnchor.Max_FitToChildren_ParentHeight);
			base.AddChild(clientArea);
		}

		public void TextEditTextSelectionTests()
		{
			GuiWidget container = new GuiWidget();
			container.LocalBounds = new RectangleDouble(0, 0, 200, 200);
			TextEditWidget editField1 = new TextEditWidget("", 0, 0, pixelWidth: 51);
			container.AddChild(editField1);

			// select the conrol and type something in it
			container.OnMouseDown(new MouseEventArgs(MouseButtons.Left, 1, 0, 0, 0));
			container.OnMouseUp(new MouseEventArgs(MouseButtons.Left, 0, 0, 0, 0));
			SendKey(Keys.A, 'a', container);
			Assert.IsTrue(editField1.Text == "a", "It should have a in it.");

			// select the begining again and type something else in it
			container.OnMouseDown(new MouseEventArgs(MouseButtons.Left, 1, 0, 0, 0));
			container.OnMouseUp(new MouseEventArgs(MouseButtons.Left, 0, 0, 0, 0));
			SendKey(Keys.B, 'b', container);
			Assert.IsTrue(editField1.Text == "ba", "It should have ba in it.");

			// select the ba and delete them
			container.OnMouseDown(new MouseEventArgs(MouseButtons.Left, 1, 0, 0, 0));
			container.OnMouseMove(new MouseEventArgs(MouseButtons.Left, 0, 15, 0, 0));
			container.OnMouseUp(new MouseEventArgs(MouseButtons.Left, 0, 15, 0, 0));
			SendKey(Keys.Back, ' ', container);
			Assert.IsTrue(editField1.Text == "", "It should have nothing in it.");

			// select the other way
			editField1.Text = "ab";
			Assert.IsTrue(editField1.Text == "ab", "It should have ab in it.");
			container.OnMouseDown(new MouseEventArgs(MouseButtons.Left, 1, 15, 0, 0));
			container.OnMouseMove(new MouseEventArgs(MouseButtons.Left, 0, 0, 0, 0));
			container.OnMouseUp(new MouseEventArgs(MouseButtons.Left, 0, 0, 0, 0));
			SendKey(Keys.Back, ' ', container);
			Assert.IsTrue(editField1.Text == "", "It should have nothing in it.");

			// select the other way but start far to the right
			editField1.Text = "abc";
			Assert.IsTrue(editField1.Text == "abc", "It should have abc in it.");
			container.OnMouseDown(new MouseEventArgs(MouseButtons.Left, 1, 30, 0, 0));
			container.OnMouseMove(new MouseEventArgs(MouseButtons.Left, 0, 0, 0, 0));
			container.OnMouseUp(new MouseEventArgs(MouseButtons.Left, 0, 0, 0, 0));
			SendKey(Keys.Back, ' ', container);
			Assert.IsTrue(editField1.Text == "", "It should have nothing in it.");

			container.Close();
		}

		public void LimitScrolToContetsTests()
		{
			GuiWidget containerControl = new GuiWidget(200, 200);
			containerControl.DoubleBuffer = true;
			containerControl.BackBuffer.NewGraphics2D().Clear(RGBA_Bytes.White);
			containerControl.OnDraw(containerControl.NewGraphics2D());

			ScrollableWidget containerTest = new ScrollableWidget(200, 200);
			containerTest.DoubleBuffer = true;
			containerTest.BackBuffer.NewGraphics2D().Clear(RGBA_Bytes.White);
			containerTest.OnDraw(containerTest.NewGraphics2D());

			OutputImages(containerControl, containerTest);

			Assert.IsTrue(containerControl.BackBuffer != null, "When we set a guiWidget to DoubleBuffer it needs to create one.");
			Assert.IsTrue(containerControl.BackBuffer == containerTest.BackBuffer, "The Anchored widget should be in the correct place.");
		}

		public void ValidateOnlyTopWidgetGetsLeftClick()
		{
			bool gotClick = false;
			GuiWidget container = new GuiWidget();
			container.Name = "container";
			container.LocalBounds = new RectangleDouble(0, 0, 200, 200);
			Button button = new Button("Test", 100, 100);
			button.Name = "button";
			button.Click += (sender, e) => { gotClick = true; };
			container.AddChild(button);

			GuiWidget blockingWidegt = new GuiWidget();
			blockingWidegt.Name = "blockingWidegt";
			blockingWidegt.LocalBounds = new RectangleDouble(105, 105, 125, 125);
			container.AddChild(blockingWidegt);

			// the widget is not in the way
			Assert.IsTrue(gotClick == false);
			container.OnMouseDown(new MouseEventArgs(MouseButtons.Left, 1, 101, 101, 0));
			Assert.IsTrue(container.MouseCaptured == false);
			Assert.IsTrue(blockingWidegt.MouseCaptured == false);
			Assert.IsTrue(container.ChildHasMouseCaptured == true);
			Assert.IsTrue(blockingWidegt.ChildHasMouseCaptured == false);
			Assert.IsTrue(button.MouseCaptured == true);
			container.OnMouseUp(new MouseEventArgs(MouseButtons.Left, 1, 101, 101, 0));
			Assert.IsTrue(container.MouseCaptured == false);
			Assert.IsTrue(blockingWidegt.MouseCaptured == false);
			Assert.IsTrue(button.MouseCaptured == false);
			Assert.IsTrue(gotClick == true);

			gotClick = false;

			// the widget is in the way
			Assert.IsTrue(gotClick == false);
			container.OnMouseDown(new MouseEventArgs(MouseButtons.Left, 1, 110, 110, 0));
			Assert.IsTrue(container.MouseCaptured == false);
			Assert.IsTrue(blockingWidegt.MouseCaptured == true);
			Assert.IsTrue(button.MouseCaptured == false);
			container.OnMouseUp(new MouseEventArgs(MouseButtons.Left, 1, 110, 110, 0));
			Assert.IsTrue(container.MouseCaptured == false);
			Assert.IsTrue(blockingWidegt.MouseCaptured == false);
			Assert.IsTrue(button.MouseCaptured == false);
			Assert.IsTrue(gotClick == false);
		}

		public void TopToBottomContainerAppliesExpectedMargin()
		{
			int marginSize = 40;
			int dimensions = 300;

			GuiWidget outerContainer = new GuiWidget(dimensions, dimensions);

			FlowLayoutWidget topToBottomContainer = new FlowLayoutWidget(FlowDirection.TopToBottom)
			{
				HAnchor = HAnchor.ParentLeftRight,
				VAnchor = UI.VAnchor.ParentBottomTop,
			};
			outerContainer.AddChild(topToBottomContainer);

			GuiWidget childWidget = new GuiWidget()
			{
				HAnchor = HAnchor.ParentLeftRight,
				VAnchor = VAnchor.ParentBottomTop,
				Margin = new BorderDouble(marginSize),
				BackgroundColor = RGBA_Bytes.Red,
			};

			topToBottomContainer.AddChild(childWidget);
			topToBottomContainer.AnchorAll();
			topToBottomContainer.PerformLayout();

			outerContainer.DoubleBuffer = true;
			outerContainer.BackBuffer.NewGraphics2D().Clear(RGBA_Bytes.White);
			outerContainer.OnDraw(outerContainer.NewGraphics2D());

			// For troubleshooting or visual validation
			//saveImagesForDebug = true;
			//OutputImages(outerContainer, outerContainer);

			var bounds = childWidget.BoundsRelativeToParent;
			Assert.IsTrue(bounds.Left == marginSize, "Left margin is incorrect");
			Assert.IsTrue(bounds.Right == dimensions - marginSize, "Right margin is incorrect");
			Assert.IsTrue(bounds.Top == dimensions - marginSize, "Top margin is incorrect");
			Assert.IsTrue(bounds.Bottom == marginSize, "Bottom margin is incorrect");
		}

        public void ValidateSimpleLeftClick()
        {
            GuiWidget container = new GuiWidget();
            container.Name = "Container";
            container.LocalBounds = new RectangleDouble(0, 0, 200, 200);
            Button button = new Button("Test", 100, 100);
            button.Name = "button";
            bool gotClick = false;
            button.Click += (sender, e) => { gotClick = true; };
            container.AddChild(button);

            Assert.IsTrue(gotClick == false);
            Assert.IsTrue(button.Focused == false);

            container.OnMouseDown(new MouseEventArgs(MouseButtons.Left, 1, 10, 10, 0));
            container.OnMouseUp(new MouseEventArgs(MouseButtons.Left, 1, 10, 10, 0));
            Assert.IsTrue(gotClick == false);
            Assert.IsTrue(button.Focused == false);
            
            container.OnMouseDown(new MouseEventArgs(MouseButtons.Left, 1, 110, 110, 0));
            container.OnMouseUp(new MouseEventArgs(MouseButtons.Left, 1, 10, 10, 0));
            Assert.IsTrue(gotClick == false);
            Assert.IsTrue(button.Focused == true, "Down click triggers focused."); 

            Assert.IsTrue(gotClick == false);
            container.OnMouseDown(new MouseEventArgs(MouseButtons.Left, 1, 110, 110, 0));
            container.OnMouseUp(new MouseEventArgs(MouseButtons.Left, 1, 110, 110, 0));
            Assert.IsTrue(gotClick == true);
            Assert.IsTrue(button.Focused == true);

            gotClick = false;
            container.OnMouseDown(new MouseEventArgs(MouseButtons.Left, 1, 10, 10, 0));
            container.OnMouseUp(new MouseEventArgs(MouseButtons.Left, 1, 10, 10, 0));
            Assert.IsTrue(gotClick == false);
            Assert.IsTrue(button.Focused == false);

        }

		public void NestedFitToChildrenParentWidth()
		{
			// child of flow layout is ParentLeftRight
			{
				//  _________________________________________
				//  |            containerControl            |
				//  | _____________________________________  |
				//  | |    Max_FitToChildren_ParentWidth   | |
				//  | | ________________________ ________  | |
				//  | | |                      | |       | | |
				//  | | |    ParentLeftRight   | | 10x10 | | |
				//  | | |______________________| |_______| | |
				//  | |____________________________________| |
				//  |________________________________________|
				//

				GuiWidget containerControl = new GuiWidget(300, 200); // containerControl = 0, 0, 300, 200
				containerControl.DoubleBuffer = true;
				FlowLayoutWidget flowWidget = new FlowLayoutWidget()
				{
					HAnchor = HAnchor.Max_FitToChildren_ParentWidth,
				};
				containerControl.AddChild(flowWidget); // flowWidget = 0, 0, 300, 0
				GuiWidget fitToChildrenOrParent = new GuiWidget(20, 20)
				{
					HAnchor = HAnchor.ParentLeftRight,
				};
				flowWidget.AddChild(fitToChildrenOrParent); // flowWidget = 0, 0, 300, 20  fitToChildrenOrParent = 0, 0, 300, 20
				GuiWidget fixed10x10 = new GuiWidget(10, 10);
				flowWidget.AddChild(fixed10x10); // flowWidget = 0, 0, 300, 20  fitToChildrenOrParent = 0, 0, 290, 20
				containerControl.OnDraw(containerControl.NewGraphics2D());

				//OutputImage(containerControl, "countainer");

				Assert.IsTrue(flowWidget.Width == containerControl.Width);
				Assert.IsTrue(fitToChildrenOrParent.Width + fixed10x10.Width == containerControl.Width);

				containerControl.Width = 350;
				Assert.IsTrue(flowWidget.Width == containerControl.Width);
				Assert.IsTrue(fitToChildrenOrParent.Width + fixed10x10.Width == containerControl.Width);

				containerControl.Width = 310;
				Assert.IsTrue(flowWidget.Width == containerControl.Width);
				Assert.IsTrue(fitToChildrenOrParent.Width + fixed10x10.Width == containerControl.Width);
			}

			// child of flow layout is Max_FitToChildren_ParentWidth
			{
				//  ___________________________________________________
				//  |            containerControl                      |
				//  | _______________________________________________  |
				//  | |    Max_FitToChildren_ParentWidth             | |
				//  | | _________________________________   _______  | |
				//  | | |                                | |       | | |
				//  | | | Max_FitToChildren_ParentWidth  | | 10x10 | | |
				//  | | |________________________________| |_______| | |
				//  | |______________________________________________| |
				//  |__________________________________________________|
				//

				GuiWidget containerControl = new GuiWidget(300, 200); // containerControl = 0, 0, 300, 200
				containerControl.DoubleBuffer = true;
				FlowLayoutWidget flowWidget = new FlowLayoutWidget()
				{
					HAnchor = HAnchor.Max_FitToChildren_ParentWidth,
				};
				containerControl.AddChild(flowWidget);
				GuiWidget fitToChildrenOrParent = new GuiWidget(20, 20)
				{
					Name = "fitToChildrenOrParent",
					HAnchor = HAnchor.Max_FitToChildren_ParentWidth,
				};
				flowWidget.AddChild(fitToChildrenOrParent); // flowWidget = 0, 0, 300, 20  fitToChildrenOrParent = 0, 0, 300, 20
				GuiWidget fixed10x10 = new GuiWidget(10, 10);
				flowWidget.AddChild(fixed10x10); // flowWidget = 0, 0, 300, 20  fitToChildrenOrParent = 0, 0, 290, 20
				containerControl.OnDraw(containerControl.NewGraphics2D());

				//OutputImage(containerControl, "countainer");

				Assert.IsTrue(flowWidget.Width == containerControl.Width);
				Assert.IsTrue(fitToChildrenOrParent.Width + fixed10x10.Width == containerControl.Width);

				containerControl.Width = 350;
				Assert.IsTrue(flowWidget.Width == containerControl.Width);
				Assert.IsTrue(fitToChildrenOrParent.Width + fixed10x10.Width == containerControl.Width);

				containerControl.Width = 310;
				Assert.IsTrue(flowWidget.Width == containerControl.Width);
				Assert.IsTrue(fitToChildrenOrParent.Width + fixed10x10.Width == containerControl.Width);
			}
		}