Leadtools.Annotations Namespace : AnnDesigner Class |
public abstract class AnnDesigner
'Declaration Public MustInherit Class AnnDesigner
'Usage Dim instance As AnnDesigner
public ref class AnnDesigner abstract
An AnnDesigner derived class controls the user interface functionality involved in drawing, editing or running an object. This class provides the basic functionality common to all the designers such as hooking into a container, clipping the mouse cursor, etc.
You must assign an AnnContainer object to the Container member and either a Leadtools.WinForms.RasterImageViewer object to the Owner, or an IAnnAutomationControl to the AutomationControl members of the designer. Then based on the exact designer functionality, it will hook into the various mouse events to draw a new, edit an existing (by moving, resizing, etc.) or run (if the container is in run user mode) an AnnObject.
Refer to IAnnAutomationControl for an example on how to use LEADTOOLS annotations with your own controls.
Imports Leadtools Imports Leadtools.Annotations Imports Leadtools.Codecs Imports Leadtools.WinForms ''' Shows how to use designers to create and select annotation objects Private Class MyForm1 : Inherits Form Private myAnnContainer As AnnContainer 'AnnAutomationManager manager; Private viewer As RasterImageViewer Private codecs As RasterCodecs Private currentDesigner As AnnDesigner Public Sub New(ByVal title As String) Text = title Size = New Size(500, 200) viewer = New RasterImageViewer() AddHandler viewer.TransformChanged, AddressOf viewer_TransformChanged AddHandler viewer.PostImagePaint, AddressOf viewer_PostImagePaint AddHandler viewer.MouseDown, AddressOf viewer_MouseDown AddHandler viewer.MouseMove, AddressOf viewer_MouseMove AddHandler viewer.MouseUp, AddressOf viewer_MouseUp AddHandler viewer.LostFocus, AddressOf viewer_LostFocus ' load an image into the viewer codecs = New RasterCodecs() viewer.Image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "image1.cmp")) ' fix this path to an existing image file on your system ' create and set up the container myAnnContainer = New AnnContainer() myAnnContainer.Bounds = New AnnRectangle(0, 0, viewer.ImageSize.Width, viewer.ImageSize.Height) myAnnContainer.UnitConverter = New AnnUnitConverter(viewer.ImageDpiX, viewer.ImageDpiY) ' Create a panel with three buttons Dim panel As Panel = New Panel() panel.Dock = DockStyle.Left Controls.Add(panel) panel.BringToFront() ' Create three buttons Dim buttonLine As Button = New Button() AddHandler buttonLine.Click, AddressOf buttonLine_Click buttonLine.Text = "Line" buttonLine.Dock = DockStyle.Top panel.Controls.Add(buttonLine) buttonLine.BringToFront() Dim buttonRectangle As Button = New Button() AddHandler buttonRectangle.Click, AddressOf buttonRectangle_Click buttonRectangle.Text = "Rectangle" buttonRectangle.Dock = DockStyle.Bottom panel.Controls.Add(buttonRectangle) buttonRectangle.BringToFront() Dim buttonSelect As Button = New Button() AddHandler buttonSelect.Click, AddressOf buttonSelect_Click buttonSelect.Text = "Select" buttonSelect.Dock = DockStyle.Left panel.Controls.Add(buttonSelect) buttonSelect.BringToFront() ' Add the viewer viewer.Dock = DockStyle.Fill Controls.Add(viewer) viewer.BringToFront() End Sub Private Sub viewer_TransformChanged(ByVal sender As Object, ByVal e As EventArgs) ' set up the container transformation If Not viewer.Image Is Nothing AndAlso Not myAnnContainer Is Nothing Then myAnnContainer.Transform = viewer.Transform.Clone() End If End Sub Private Sub viewer_PostImagePaint(ByVal sender As Object, ByVal e As PaintEventArgs) ' draw the container and its objects on this viewer If Not viewer.Image Is Nothing AndAlso Not myAnnContainer Is Nothing Then myAnnContainer.Draw(e.Graphics) End If End Sub Private Sub buttonSelect_Click(ByVal sender As Object, ByVal e As System.EventArgs) ' Select button is clicked ' cancel any draw designer running If Not currentDesigner Is Nothing AndAlso TypeOf currentDesigner Is AnnDrawDesigner Then Dim drawDesigner As AnnDrawDesigner = CType(IIf(TypeOf currentDesigner Is AnnDrawDesigner, currentDesigner, Nothing), AnnDrawDesigner) drawDesigner.Cancel() currentDesigner = Nothing End If End Sub Private Sub buttonLine_Click(ByVal sender As Object, ByVal e As System.EventArgs) ' Line button is clicked ' first end any current designer (if any) EndDesigner() ' start a new Line draw designer Dim lineDrawDesigner As AnnLineDrawDesigner = New AnnLineDrawDesigner() ' set up the object template (a 2 pixels-wide pen) Dim lineObject As AnnLineObject = New AnnLineObject() lineObject.Pen = New AnnPen(Color.Red, New AnnLength(2, AnnUnit.Pixel)) lineDrawDesigner.ObjectTemplate = lineObject StartDrawDesigner(lineDrawDesigner) End Sub Private Sub buttonRectangle_Click(ByVal sender As Object, ByVal e As System.EventArgs) ' Rectangle button is clicked ' first end any current designer (if any) EndDesigner() ' start a new Rectangle draw designer Dim rectangleDrawDesigner As AnnRectangleDrawDesigner = New AnnRectangleDrawDesigner() ' set up the object template (a 2 pixels-wide pen) Dim rectangleObject As AnnRectangleObject = New AnnRectangleObject() rectangleObject.Pen = New AnnPen(Color.Red, New AnnLength(2, AnnUnit.Pixel)) rectangleObject.Brush = New AnnSolidBrush(Color.Yellow) rectangleDrawDesigner.ObjectTemplate = rectangleObject StartDrawDesigner(rectangleDrawDesigner) End Sub Private Sub EndDesigner() ' ends any running designer If Not currentDesigner Is Nothing Then If TypeOf currentDesigner Is AnnEditDesigner Then Dim editDesigner As AnnEditDesigner = CType(IIf(TypeOf currentDesigner Is AnnEditDesigner, currentDesigner, Nothing), AnnEditDesigner) editDesigner.End() ElseIf TypeOf currentDesigner Is AnnDrawDesigner Then Dim drawDesigner As AnnDrawDesigner = CType(IIf(TypeOf currentDesigner Is AnnDrawDesigner, currentDesigner, Nothing), AnnDrawDesigner) drawDesigner.Cancel() End If End If End Sub Private Sub StartDrawDesigner(ByVal drawDesigner As AnnDrawDesigner) ' set up the current designer AddHandler drawDesigner.Draw, AddressOf OnDesignerDraw drawDesigner.Owner = viewer drawDesigner.ClipCursor = True drawDesigner.Container = myAnnContainer currentDesigner = drawDesigner End Sub Private Sub OnDesignerDraw(ByVal sender As Object, ByVal e As AnnDrawDesignerEventArgs) ' show information on the current draw operation Console.Write("Status: {0}, Object: {1}, Coordinates:", e.OperationStatus, e.Object.GetType().Name) If TypeOf e.Object Is AnnLineObject Then Dim lineObject As AnnLineObject = CType(IIf(TypeOf e.Object Is AnnLineObject, e.Object, Nothing), AnnLineObject) Console.WriteLine("Start Point: {0}, EndPoint: {1}", lineObject.StartPoint, lineObject.EndPoint) ElseIf TypeOf e.Object Is AnnRectangleObject Then Dim rectangleObject As AnnRectangleObject = CType(IIf(TypeOf e.Object Is AnnRectangleObject, e.Object, Nothing), AnnRectangleObject) Console.WriteLine("Bounds: {0}", rectangleObject.Bounds) End If End Sub Private Sub viewer_MouseDown(ByVal sender As Object, ByVal e As MouseEventArgs) Dim handled As Boolean = False ' see if a designer is currently running, if so, let it handle this event If Not currentDesigner Is Nothing Then handled = currentDesigner.MouseDown(e) End If If (Not handled) Then ' the mouse click was ! handled by a designer ' check if the click was on top of an existing object that we can start editing Dim pt As AnnPoint = New AnnPoint(e.X, e.Y) Dim obj As AnnObject = myAnnContainer.HitTest(pt, 2) If Not obj Is Nothing Then ' yes, start the edit designer for this object If TypeOf obj Is AnnLineObject Then Dim lineEditDesigner As AnnLineEditDesigner = New AnnLineEditDesigner() StartEditing(lineEditDesigner, obj, pt) lineEditDesigner.MouseDown(e) ElseIf TypeOf obj Is AnnRectangleObject Then Dim rectangleEditDesigner As AnnRectangleEditDesigner = New AnnRectangleEditDesigner() StartEditing(rectangleEditDesigner, obj, pt) rectangleEditDesigner.MouseDown(e) End If End If End If End Sub Private Sub StartEditing(ByVal editDesigner As AnnEditDesigner, ByVal obj As AnnObject, ByVal pt As AnnPoint) ' first end any running designers EndDesigner() ' set up the current designer AddHandler editDesigner.Edit, AddressOf OnDesignerEdit editDesigner.Owner = viewer editDesigner.Container = myAnnContainer editDesigner.ClipCursor = True editDesigner.EditObject = obj editDesigner.HitTestBuffer = 2 editDesigner.ControlPointsHitTestBuffer = 2 editDesigner.RotateModifierKey = Keys.Shift editDesigner.HitTestObject = obj.HitTest(pt, 2) ' set up the edit designer control points Dim rectangleControlPoint As AnnRectangleControlPoint = New AnnRectangleControlPoint() rectangleControlPoint.Size = New AnnSize(10, 10, AnnUnit.Pixel) rectangleControlPoint.Pen = New AnnPen(Color.Blue, New AnnLength(1, AnnUnit.Pixel)) rectangleControlPoint.Brush = New AnnSolidBrush(Color.White) Dim i As Integer = 0 Do While i < editDesigner.ControlPointCount editDesigner.ControlPoints(i) = rectangleControlPoint i += 1 Loop editDesigner.Start() currentDesigner = editDesigner End Sub Private Sub OnDesignerEdit(ByVal sender As Object, ByVal e As AnnEditDesignerEventArgs) ' show information on the current draw operation Console.Write("Object: {0}, Operation: {1}, Status: {2}, ", e.Object.GetType().Name, e.Operation, e.OperationStatus) If e.Operation = AnnEditDesignerOperation.MoveControlPoint Then Console.WriteLine("Control Point index: {0}", e.MoveControlPointIndex) Else Console.WriteLine("HitTestObject: {0}", e.HitTestObject) End If End Sub Private Sub viewer_MouseMove(ByVal sender As Object, ByVal e As MouseEventArgs) Dim handled As Boolean = False ' see if a designer is currently running, if so, let it handle this event If Not currentDesigner Is Nothing Then handled = currentDesigner.MouseMove(e) End If End Sub Private Sub viewer_MouseUp(ByVal sender As Object, ByVal e As MouseEventArgs) Dim handled As Boolean = False ' see if a designer is currently running, if so, let it handle this event If Not currentDesigner Is Nothing Then handled = currentDesigner.MouseUp(e) End If End Sub Private Sub viewer_LostFocus(ByVal sender As Object, ByVal e As EventArgs) ' see if a designer is currently running, if so, cancel it If Not currentDesigner Is Nothing Then currentDesigner.Cancel() End If End Sub End Class Public Sub AnnDesigner_AnnDesigner(ByVal title As String) Dim form As MyForm1 = New MyForm1(title) form.ShowDialog() End Sub Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class
using Leadtools; using Leadtools.Annotations; using Leadtools.Codecs; using Leadtools.WinForms; /// Shows how to use designers to create and select annotation objects class MyForm1 : Form { AnnContainer container; //AnnAutomationManager manager; RasterImageViewer viewer; RasterCodecs codecs; AnnDesigner currentDesigner; public MyForm1(string title) { Text = title; Size = new Size(500, 200); viewer = new RasterImageViewer(); viewer.TransformChanged += new EventHandler(viewer_TransformChanged); viewer.PostImagePaint += new PaintEventHandler(viewer_PostImagePaint); viewer.MouseDown += new MouseEventHandler(viewer_MouseDown); viewer.MouseMove += new MouseEventHandler(viewer_MouseMove); viewer.MouseUp += new MouseEventHandler(viewer_MouseUp); viewer.LostFocus += new EventHandler(viewer_LostFocus); // load an image into the viewer codecs = new RasterCodecs(); string fileName = Path.Combine(LEAD_VARS.ImagesDir, "image1.cmp"); viewer.Image = codecs.Load(fileName); // create and set up the container container = new AnnContainer(); container.Bounds = new AnnRectangle(0, 0, viewer.ImageSize.Width, viewer.ImageSize.Height); container.UnitConverter = new AnnUnitConverter(viewer.ImageDpiX, viewer.ImageDpiY); // Create a panel with three buttons Panel panel = new Panel(); panel.Dock = DockStyle.Left; Controls.Add(panel); panel.BringToFront(); // Create three buttons Button buttonLine = new Button(); buttonLine.Click +=new EventHandler(buttonLine_Click); buttonLine.Text = "Line"; buttonLine.Dock = DockStyle.Top; panel.Controls.Add(buttonLine); buttonLine.BringToFront(); Button buttonRectangle = new Button(); buttonRectangle.Click +=new EventHandler(buttonRectangle_Click); buttonRectangle.Text = "Rectangle"; buttonRectangle.Dock = DockStyle.Bottom; panel.Controls.Add(buttonRectangle); buttonRectangle.BringToFront(); Button buttonSelect = new Button(); buttonSelect.Click += new EventHandler(buttonSelect_Click); buttonSelect.Text = "Select"; buttonSelect.Dock = DockStyle.Left; panel.Controls.Add(buttonSelect); buttonSelect.BringToFront(); // Add the viewer viewer.Dock = DockStyle.Fill; Controls.Add(viewer); viewer.BringToFront(); } private void viewer_TransformChanged(object sender, EventArgs e) { // set up the container transformation if(viewer.Image != null && container != null) container.Transform = viewer.Transform.Clone(); } private void viewer_PostImagePaint(object sender, PaintEventArgs e) { // draw the container and its objects on this viewer if(viewer.Image != null && container != null) container.Draw(e.Graphics); } private void buttonSelect_Click(object sender, System.EventArgs e) { // Select button is clicked // cancel any draw designer running if(currentDesigner != null && currentDesigner is AnnDrawDesigner) { AnnDrawDesigner drawDesigner = currentDesigner as AnnDrawDesigner; drawDesigner.Cancel(); currentDesigner = null; } } private void buttonLine_Click(object sender, System.EventArgs e) { // Line button is clicked // first end any current designer (if any) EndDesigner(); // start a new Line draw designer AnnLineDrawDesigner lineDrawDesigner = new AnnLineDrawDesigner(); // set up the object template (a 2 pixels-wide pen) AnnLineObject lineObject = new AnnLineObject(); lineObject.Pen = new AnnPen(Color.Red, new AnnLength(2, AnnUnit.Pixel)); lineDrawDesigner.ObjectTemplate = lineObject; StartDrawDesigner(lineDrawDesigner); } private void buttonRectangle_Click(object sender, System.EventArgs e) { // Rectangle button is clicked // first end any current designer (if any) EndDesigner(); // start a new Rectangle draw designer AnnRectangleDrawDesigner rectangleDrawDesigner = new AnnRectangleDrawDesigner(); // set up the object template (a 2 pixels-wide pen) AnnRectangleObject rectangleObject = new AnnRectangleObject(); rectangleObject.Pen = new AnnPen(Color.Red, new AnnLength(2, AnnUnit.Pixel)); rectangleObject.Brush = new AnnSolidBrush(Color.Yellow); rectangleDrawDesigner.ObjectTemplate = rectangleObject; StartDrawDesigner(rectangleDrawDesigner); } private void EndDesigner() { // ends any running designer if(currentDesigner != null) { if(currentDesigner is AnnEditDesigner) { AnnEditDesigner editDesigner = currentDesigner as AnnEditDesigner; editDesigner.End(); } else if(currentDesigner is AnnDrawDesigner) { AnnDrawDesigner drawDesigner = currentDesigner as AnnDrawDesigner; drawDesigner.Cancel(); } } } private void StartDrawDesigner(AnnDrawDesigner drawDesigner) { // set up the current designer drawDesigner.Draw += new EventHandler<AnnDrawDesignerEventArgs>(OnDesignerDraw); drawDesigner.Owner = viewer; drawDesigner.ClipCursor = true; drawDesigner.Container = container; currentDesigner = drawDesigner; } private void OnDesignerDraw(object sender, AnnDrawDesignerEventArgs e) { // show information on the current draw operation Console.Write("Status: {0}, Object: {1}, Coordinates:", e.OperationStatus, e.Object.GetType().Name); if(e.Object is AnnLineObject) { AnnLineObject lineObject = e.Object as AnnLineObject; Console.WriteLine("Start Point: {0}, EndPoint: {1}", lineObject.StartPoint, lineObject.EndPoint); } else if(e.Object is AnnRectangleObject) { AnnRectangleObject rectangleObject = e.Object as AnnRectangleObject; Console.WriteLine("Bounds: {0}", rectangleObject.Bounds); } } private void viewer_MouseDown(object sender, MouseEventArgs e) { bool handled = false; // see if a designer is currently running, if so, let it handle this event if(currentDesigner != null) handled = currentDesigner.MouseDown(e); if(!handled) { // the mouse click was ! handled by a designer // check if the click was on top of an existing object that we can start editing AnnPoint pt = new AnnPoint(e.X, e.Y); AnnObject obj = container.HitTest(pt, 2); if(obj != null) { // yes, start the edit designer for this object if(obj is AnnLineObject) { AnnLineEditDesigner lineEditDesigner = new AnnLineEditDesigner(); StartEditing(lineEditDesigner, obj, pt); lineEditDesigner.MouseDown(e); } else if(obj is AnnRectangleObject) { AnnRectangleEditDesigner rectangleEditDesigner = new AnnRectangleEditDesigner(); StartEditing(rectangleEditDesigner, obj, pt); rectangleEditDesigner.MouseDown(e); } } } } private void StartEditing(AnnEditDesigner editDesigner, AnnObject obj, AnnPoint pt) { // first end any running designers EndDesigner(); // set up the current designer editDesigner.Edit += new EventHandler<AnnEditDesignerEventArgs>(OnDesignerEdit); editDesigner.Owner = viewer; editDesigner.Container = container; editDesigner.ClipCursor = true; editDesigner.EditObject = obj; editDesigner.HitTestBuffer = 2; editDesigner.ControlPointsHitTestBuffer = 2; editDesigner.RotateModifierKey = Keys.Shift; editDesigner.HitTestObject = obj.HitTest(pt, 2); // set up the edit designer control points AnnRectangleControlPoint rectangleControlPoint = new AnnRectangleControlPoint(); rectangleControlPoint.Size = new AnnSize(10, 10, AnnUnit.Pixel); rectangleControlPoint.Pen = new AnnPen(Color.Blue, new AnnLength(1, AnnUnit.Pixel)); rectangleControlPoint.Brush = new AnnSolidBrush(Color.White); for(int i = 0; i < editDesigner.ControlPointCount; i++) editDesigner.ControlPoints[i] = rectangleControlPoint; editDesigner.Start(); currentDesigner = editDesigner; } private void OnDesignerEdit(object sender, AnnEditDesignerEventArgs e) { // show information on the current draw operation Console.Write("Object: {0}, Operation: {1}, Status: {2}, ", e.Object.GetType().Name, e.Operation, e.OperationStatus); if(e.Operation == AnnEditDesignerOperation.MoveControlPoint) Console.WriteLine("Control Point index: {0}", e.MoveControlPointIndex); else Console.WriteLine("HitTestObject: {0}", e.HitTestObject); } private void viewer_MouseMove(object sender, MouseEventArgs e) { bool handled = false; // see if a designer is currently running, if so, let it handle this event if(currentDesigner != null) handled = currentDesigner.MouseMove(e); } private void viewer_MouseUp(object sender, MouseEventArgs e) { bool handled = false; // see if a designer is currently running, if so, let it handle this event if(currentDesigner != null) handled = currentDesigner.MouseUp(e); } private void viewer_LostFocus(object sender, EventArgs e) { // see if a designer is currently running, if so, cancel it if(currentDesigner != null) currentDesigner.Cancel(); } } public void AnnDesigner_AnnDesigner(string title) { MyForm1 form = new MyForm1(title); form.ShowDialog(); } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; }