C1Zoom Class

Namespace: C1.Win.TouchToolKit

Assembly: C1.Win.TouchToolKit.8.dll

Syntax

[ToolboxBitmap(typeof(C1Zoom), "Zoom.png")]
public class C1Zoom : Component, IComponent, IDisposable

Remarks

Examples

The following code example shows how to configure C1Zoom component to get different zoom effect.

You can copy the code to a exsit Windows Forms appliction. And set the form in the sample code as start form.

If you find a licenses error when run this code. Try to drag a C1Zoom component to a any Form from tool box can generate the licenses information to this project.

public class GcZoomDemo : Form
{
	private Label _label1;
	private ComboBox _previewModeComboBox;
	private Label _label2;
	private ComboBox _boundaryFeedbackModeComboBox;
	private Label _label3;
	private TextBox _maxZoomFactorTextBox;
	private Label _label4;
	private TextBox _zoomFactorTextBox;
	private TextBox _zoomFactor2TextBox;
	private GcZoom _gcZoom1 = new GcZoom();

 	public GcZoomDemo()
 	{
	 	InitializeComponent();

	 	SetGcZoomTarget();

	 	_previewModeComboBox.SelectedIndexChanged += previewModeComboBox_SelectedIndexChanged;
	 	_boundaryFeedbackModeComboBox.SelectedIndexChanged += boundaryFeedbackModeComboBox_SelectedIndexChanged;
	 	_maxZoomFactorTextBox.TextChanged += maxZoomFactorTextBox_TextChanged;
	 	_zoomFactorTextBox.TextChanged += zoomFactorTextBox_TextChanged;

	 	// GcZoom's ZoomFactor changed event
	 	_gcZoom1.ZoomFactorChanged += gcZoom1_ZoomFactorChanged;
 	}

 	void boundaryFeedbackModeComboBox_SelectedIndexChanged(object sender, EventArgs e)
 	{
	 	switch (_boundaryFeedbackModeComboBox.Text)
	 	{
		 	case "Split":
			 	_gcZoom1.BoundaryFeedbackMode = BoundaryFeedbackMode.Split;
			 	break;

		 	case "Standard":
			 	_gcZoom1.BoundaryFeedbackMode = BoundaryFeedbackMode.Standard;
			 	break;

		 	default:
			 	break;
	 	}
 	}

 	void previewModeComboBox_SelectedIndexChanged(object sender, EventArgs e)
 	{
	 	switch (_previewModeComboBox.Text)
	 	{
		 	case "Bitmap":
			 	_gcZoom1.ZoomPreviewMode = ZoomPreviewMode.Bitmap;
			 	break;

		 	case "AlternativeContent":
			 	_gcZoom1.ZoomPreviewMode = ZoomPreviewMode.AlternativeContent;
			 	_gcZoom1.AlternativeContentSettings.ForeColor = SystemColors.ControlDarkDark;
			 	_gcZoom1.AlternativeContentSettings.Format = "Zooming {Percentage}%";
			 	break;

		 	case "NoPreview":
			 	_gcZoom1.ZoomPreviewMode = ZoomPreviewMode.NoPreview;
			 	break;

		 	default:
			 	break;
	 	}
 	}

 	void SetGcZoomTarget()
 	{
	 	_gcZoom1.Target = this;
 	}

 	void maxZoomFactorTextBox_TextChanged(object sender, EventArgs e)
 	{
	 	string value = _maxZoomFactorTextBox.Text.Trim();

	 	try
	 	{
		 	float maxFactor = (float)Convert.ToDouble(value);
		 	_gcZoom1.MaxZoomFactor = maxFactor;
	 	}
	 	catch
	 	{
		 	_gcZoom1.MaxZoomFactor = 2f;
	 	}
 	}

 	void zoomFactorTextBox_TextChanged(object sender, EventArgs e)
 	{
	 	string value = _zoomFactorTextBox.Text.Trim();

	 	try
	 	{
		 	float zoomFactor = (float)Convert.ToDouble(value);
		 	_gcZoom1.ZoomFactor = zoomFactor;
	 	}
	 	catch
	 	{
			 Console.WriteLine(e.ToString());
			 _gcZoom1.ZoomFactor = 1f;
	 	}
 	}

 	void gcZoom1_ZoomFactorChanged(object sender, EventArgs e)
 	{
	 	_zoomFactor2TextBox.Text = _gcZoom1.ZoomFactor.ToString();
 	}

 	private void InitializeComponent()
 	{
		 _label1 = new Label();
	 	_label1.Text = "ZoomPreviewMode";
	 	_label1.Location = new Point(20, 20);
	 	_label1.Size = new Size(140, 20);

	 	_previewModeComboBox = new ComboBox();
	 	_previewModeComboBox.Items.AddRange(new object[] { "Bitmap", "AlternativeContent", "NoPreview" });
	 	_previewModeComboBox.Location = new Point(160, 20);

	 	_label2 = new Label();
	 	_label2.Text = "BoundaryFeedbackMode";
	 	_label2.Location = new Point(20, 50);
	 	_label2.Size = new Size(140, 20);

	 	_boundaryFeedbackModeComboBox = new ComboBox();
	 	_boundaryFeedbackModeComboBox.Items.AddRange(new object[] { "Split", "Standard"});
	 	_boundaryFeedbackModeComboBox.Location = new Point(160, 50);

	 	_label3 = new Label();
	 	_label3.Text = "MaxZoomFactor";
	 	_label3.Location = new Point(20, 80);
	 	_label3.Size = new Size(140, 20);

	 	_maxZoomFactorTextBox = new TextBox();
	 	_maxZoomFactorTextBox.Location = new Point(160, 80);

	 	_label4 = new Label();
	 	_label4.Text = "ZoomFactor";
	 	_label4.Location = new Point(20, 110);
	 	_label4.Size = new Size(140, 20);

	 	_zoomFactorTextBox = new TextBox();
	 	_zoomFactorTextBox.Location = new Point(160, 110);

	 	_zoomFactor2TextBox = new TextBox();
	 	_zoomFactor2TextBox.Text = "1";
	 	_zoomFactor2TextBox.ReadOnly = true;
	 	_zoomFactor2TextBox.Location = new Point(160, 135);

	 	this.Controls.Add(_label1);
	 	this.Controls.Add(_previewModeComboBox);
	 	this.Controls.Add(_label2);
	 	this.Controls.Add(_boundaryFeedbackModeComboBox);
	 	this.Controls.Add(_label3);
	 	this.Controls.Add(_maxZoomFactorTextBox);
	 	this.Controls.Add(_label4);
	 	this.Controls.Add(_zoomFactorTextBox);
	 	this.Controls.Add(_zoomFactor2TextBox);
	}
}

Public Class GcZoomDemo
	Inherits Form
	Private _label1 As Label
	Private _previewModeComboBox As ComboBox
	Private _label2 As Label
	Private _boundaryFeedbackModeComboBox As ComboBox
	Private _label3 As Label
	Private _maxZoomFactorTextBox As TextBox
	Private _label4 As Label
	Private _zoomFactorTextBox As TextBox
	Private _zoomFactor2TextBox As TextBox

	Private _gcZoom1 As New GcZoom()

	Public Sub New()
		InitializeComponent()

		SetGcZoomTarget()

		AddHandler _previewModeComboBox.SelectedIndexChanged, AddressOf previewModeComboBox_SelectedIndexChanged
		AddHandler _boundaryFeedbackModeComboBox.SelectedIndexChanged, AddressOf boundaryFeedbackModeComboBox_SelectedIndexChanged
		AddHandler _maxZoomFactorTextBox.TextChanged, AddressOf maxZoomFactorTextBox_TextChanged
		AddHandler _zoomFactorTextBox.TextChanged, AddressOf zoomFactorTextBox_TextChanged

 		' GcZoom's ZoomFactor changed event
 		AddHandler _gcZoom1.ZoomFactorChanged, AddressOf gcZoom1_ZoomFactorChanged
	End Sub

	Private Sub boundaryFeedbackModeComboBox_SelectedIndexChanged(sender As Object, e As EventArgs)
 		Select Case _boundaryFeedbackModeComboBox.Text
	 		Case "Split"
		 		_gcZoom1.BoundaryFeedbackMode = BoundaryFeedbackMode.Split
		 		Exit Select

	 		Case "Standard"
		 		_gcZoom1.BoundaryFeedbackMode = BoundaryFeedbackMode.Standard
		 		Exit Select

	 		Case Else
				Exit Select
		End Select
	End Sub

	Private Sub previewModeComboBox_SelectedIndexChanged(sender As Object, e As EventArgs)
 		Select Case _previewModeComboBox.Text
	 		Case "Bitmap"
		 		_gcZoom1.ZoomPreviewMode = ZoomPreviewMode.Bitmap
		 		Exit Select

	 		Case "AlternativeContent"
		 		_gcZoom1.ZoomPreviewMode = ZoomPreviewMode.AlternativeContent
		 		_gcZoom1.AlternativeContentSettings.ForeColor = SystemColors.ControlDarkDark
		 		_gcZoom1.AlternativeContentSettings.Format = "Zooming {Percentage}%"
		 		Exit Select

	 		Case "NoPreview"
		 		_gcZoom1.ZoomPreviewMode = ZoomPreviewMode.NoPreview
		 		Exit Select

	 		Case Else
				Exit Select
		End Select
	End Sub

	Private Sub SetGcZoomTarget()
 		_gcZoom1.Target = Me
	End Sub

	Private Sub maxZoomFactorTextBox_TextChanged(sender As Object, e As EventArgs)
 		Dim value As String = _maxZoomFactorTextBox.Text.Trim()

 		Try
	 		Dim maxFactor As Single = CSng(Convert.ToDouble(value))
	 		_gcZoom1.MaxZoomFactor = maxFactor
 		Catch
	 		_gcZoom1.MaxZoomFactor = 2.0F
 		End Try
	End Sub

	Private Sub zoomFactorTextBox_TextChanged(sender As Object, e As EventArgs)
 		Dim value As String = _zoomFactorTextBox.Text.Trim()

 		Try
	 		Dim zoomFactor As Single = CSng(Convert.ToDouble(value))
	 		_gcZoom1.ZoomFactor = zoomFactor
 		Catch
	 		Console.WriteLine(e.ToString())
	 		_gcZoom1.ZoomFactor = 1.0F
 		End Try
	End Sub

	Private Sub gcZoom1_ZoomFactorChanged(sender As Object, e As EventArgs)
 		_zoomFactor2TextBox.Text = _gcZoom1.ZoomFactor.ToString()
	End Sub

	Private Sub InitializeComponent()
 		_label1 = New Label()
 		_label1.Text = "ZoomPreviewMode"
 		_label1.Location = New Point(20, 20)
 		_label1.Size = New Size(140, 20)

 		_previewModeComboBox = New ComboBox()
 		_previewModeComboBox.Items.AddRange(New Object() {"Bitmap", "AlternativeContent", "NoPreview"})
 		_previewModeComboBox.Location = New Point(160, 20)

 		_label2 = New Label()
 		_label2.Text = "BoundaryFeedbackMode"
		_label2.Location = New Point(20, 50)
 		_label2.Size = New Size(140, 20)

 		_boundaryFeedbackModeComboBox = New ComboBox()
 		_boundaryFeedbackModeComboBox.Items.AddRange(New Object() {"Split", "Standard"})
 		_boundaryFeedbackModeComboBox.Location = New Point(160, 50)

 		_label3 = New Label()
 		_label3.Text = "MaxZoomFactor"
 		_label3.Location = New Point(20, 80)
 		_label3.Size = New Size(140, 20)

 		_maxZoomFactorTextBox = New TextBox()
 		_maxZoomFactorTextBox.Location = New Point(160, 80)

 		_label4 = New Label()
 		_label4.Text = "ZoomFactor"
 		_label4.Location = New Point(20, 110)
 		_label4.Size = New Size(140, 20)

 		_zoomFactorTextBox = New TextBox()
 		_zoomFactorTextBox.Location = New Point(160, 110)

 		_zoomFactor2TextBox = New TextBox()
 		_zoomFactor2TextBox.Text = "1"
 		_zoomFactor2TextBox.[ReadOnly] = True
 		_zoomFactor2TextBox.Location = New Point(160, 135)

 		Me.Controls.Add(_label1)
 		Me.Controls.Add(_previewModeComboBox)
 		Me.Controls.Add(_label2)
 		Me.Controls.Add(_boundaryFeedbackModeComboBox)
 		Me.Controls.Add(_label3)
 		Me.Controls.Add(_maxZoomFactorTextBox)
 		Me.Controls.Add(_label4)
 		Me.Controls.Add(_zoomFactorTextBox)
 		Me.Controls.Add(_zoomFactor2TextBox)
	End Sub
End Class

Constructors

Properties

Methods

Events