The base class for all the designers in the annotation toolkit.
public abstract class AnnDesigner
Public MustInherit Class 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.
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";
}
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
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