C1ApplicationZoom Class

Represents the component which can be attached to any existing form, and made all forms in current application can be zoom by two finger touch.

Inheritance

object

MarshalByRefObject

Component

C1ApplicationZoom

Implements

IComponent

IDisposable

Namespace: C1.Win.TouchToolKit

Assembly: C1.Win.TouchToolKit.10.dll

Syntax

[ToolboxBitmap(typeof(C1ApplicationZoom), "ApplicationZoom.png")]
public class C1ApplicationZoom : Component, IComponent, IDisposable

<ToolboxBitmap(GetType(C1ApplicationZoom), "ApplicationZoom.png")>
Public Class C1ApplicationZoom
    Inherits Component
    Implements IComponent, IDisposable

Remarks

The C1ApplicationZoom will try to find all forms in current application, and then attach a C1Zoom component to the found forms. Before attach C1ApplicationZoom will initialize the C1Zoom's setting by this own settings. And then raise C1ZoomAttaching and C1ZoomAttached event. User can change the initial in this events' event handler and user can cancel attach in C1ZoomAttaching event by set C1ZoomAttachingEventArgs's Cancel property to true.

If the form has attached a C1Zoom, the C1ApplicationZoom do not attach it again.

The C1ApplicationZoom can't make the tooltip, contextMenu, common dialog's has gesture zoom ability.

Examples

The following code example shows how to use C1ApplicationZoom component.

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 C1ApplicationZoom component to a any Form from tool box can generate the licenses information to this project.

public class UserControlZoomPolicyDemo : Form
{
	private CheckBox _zoomItemBoundsCheckBox;
	private MyControl _myControl;
	private MyControlZoomPolicy _myControlZoomPolicy = new MyControlZoomPolicy();
	private GcZoom _gcZoom1 = new GcZoom();

	public UserControlZoomPolicyDemo()
	{
		InitializeComponent();

		_gcZoom1.Target = this;

		// Add MyControl's ZoomPolicy object to GcZoom
		_gcZoom1.ZoomPolicies.Add(_myControlZoomPolicy);

		_zoomItemBoundsCheckBox.CheckedChanged += _zoomItemBoundsCheckBox_CheckedChanged;
	}

	void _zoomItemBoundsCheckBox_CheckedChanged(object sender, EventArgs e)
	{
		_gcZoom1.ZoomFactor = 1f;
		_myControlZoomPolicy.ZoomItemBounds = _zoomItemBoundsCheckBox.Checked;
	}

	private void InitializeComponent()
	{
		_zoomItemBoundsCheckBox = new CheckBox();
		_zoomItemBoundsCheckBox.Text = "ZoomItemBounds";
		_zoomItemBoundsCheckBox.Location = new Point(20, 20);
		_zoomItemBoundsCheckBox.Size = new Size(120, 20);
		_zoomItemBoundsCheckBox.Checked = true;

		_myControl = new MyControl();
		_myControl.Location = new Point(200, 20);

		this.Controls.Add(_zoomItemBoundsCheckBox);
		this.Controls.Add(_myControl);
		this.Size = new Size(600, 400);
	}
}

// Implements a zoom policy for MyControl
internal class MyControlZoomPolicy : ZoomPolicy
{
	private bool _zoomItemBounds = true;

	public MyControlZoomPolicy()
	{
	}

	public bool ZoomItemBounds
	{
		get { return _zoomItemBounds; }
		set { _zoomItemBounds = value; }
	}

	// Gets the type indicates which control type can use this policy.
	public override Type TargetType
	{
		get { return typeof(MyControl); }
	}

	// Zoom the control bounds
	public override void ZoomBounds(Control control, ZoomBoundsInfo infos)
	{
		if (ZoomItemBounds)
		{
			MyControl myControl = control as MyControl;
			myControl.ColumnWidth = infos.Zoom(myControl.ColumnWidth);
			myControl.RowHeight = infos.Zoom(myControl.RowHeight);
		}

		base.ZoomBounds(control, infos);
	}

	// Zoom the control font
	public override void ZoomFont(Control control, ZoomFontInfo infos)
	{
		base.ZoomFont(control, infos);
	}
}

// MyControl component
internal class MyControl : UserControl
{
	private int _columnWidth;
	private int _rowHeight;
	private Brush[,] _brushes = {
	{Brushes.AliceBlue, Brushes.Aqua},
	{Brushes.Beige, Brushes.BlanchedAlmond},
	{Brushes.BurlyWood, Brushes.Chocolate},
	{Brushes.Crimson, Brushes.DarkGoldenrod},
	{Brushes.DarkMagenta, Brushes.DarkRed},
	{Brushes.DarkSlateGray, Brushes.DeepSkyBlue},
	{Brushes.Firebrick, Brushes.GhostWhite}
};

	public MyControl()
	{
		InitializeComponent();

		this.ColumnWidth = 40;
		this.RowHeight = 40;
	}

	public int ColumnWidth
	{
		get { return _columnWidth; }
		set { _columnWidth = value; }
	}

	public int RowHeight
	{
		get { return _rowHeight; }
		set { _rowHeight = value; }
	}

	private void InitializeComponent()
	{
		this.BackColor = SystemColors.Control;
		this.Size = new Size(80, 280);
	}

	protected override void OnPaint(PaintEventArgs e)
	{
		Draw(e.Graphics);
		base.OnPaint(e);
	}

	private void Draw(Graphics gObj)
	{
		gObj.DrawRectangle(SystemPens.ControlDark, 0, 0, this.Width - 1, this.Height - 1);

		for (int i = 0; i < 2; ++i)
		{
			for (int j = 0; j < 7; ++j)
			{
				Rectangle rect = new Rectangle(i * _columnWidth, j * _rowHeight, _columnWidth, _rowHeight);
				rect.Inflate(-6, -6);

				gObj.DrawRectangle(SystemPens.ControlDark, rect);
				gObj.DrawLine(SystemPens.ControlDarkDark, rect.Left, rect.Top + 1, rect.Right, rect.Top + 1);
				gObj.DrawLine(SystemPens.ControlDarkDark, rect.Left + 1, rect.Top, rect.Left + 1, rect.Bottom);
				gObj.DrawLine(SystemPens.ControlLightLight, rect.Right + 1, rect.Top, rect.Right + 1, rect.Bottom);
				gObj.DrawLine(SystemPens.ControlLightLight, rect.Left, rect.Bottom + 1, rect.Right, rect.Bottom + 1);

				rect.Inflate(-1, -1);
				rect.Offset(1, 1);
				gObj.FillRectangle(_brushes[j, i], rect);
			}
		}
	}
}

Public Class GcApplicationZoomDemo
	Inherits Form
	Private _showFormButton As Button
	Private _showForm2Button As Button
	Private _gcApplicationZoom As GcApplicationZoom

	Public Sub New()
		InitializeComponent()

		AddHandler _showFormButton.Click, AddressOf _showFormButton_Click
		AddHandler _showForm2Button.Click, AddressOf _showForm2Button_Click
		AddHandler _gcApplicationZoom.GcZoomAttaching, AddressOf _gcApplicationZoom_GcZoomAttaching
		AddHandler _gcApplicationZoom.GcZoomAttached, AddressOf _gcApplicationZoom_GcZoomAttached
		AddHandler _gcApplicationZoom.GcZoomDetached, AddressOf _gcApplicationZoom_GcZoomDetached
	End Sub

	Private Sub _gcApplicationZoom_GcZoomAttaching(sender As Object, e As GcZoomAttachingEventArgs)
		' May be some forms should not be zoom.
		If TypeOf e.Form Is NormalForm Then
			e.Cancel = True
		Else
			e.GcZoom.AutoShowControl = True
		End If
	End Sub

	Private Sub _gcApplicationZoom_GcZoomAttached(sender As Object, e As GcZoomAttachedEventArgs)
		' If you want specific GcZoom's setting different from GcApplicationZoom, You can change it in
		' GcZoomAttaching or GcZoomAttached event.
		e.GcZoom.MaxZoomFactor = 4.0F

		If TypeOf e.Form Is ZoomForm Then
			AddHandler e.GcZoom.ZoomFactorChanged, AddressOf TryCast(e.Form, ZoomForm).ZoomFactorChangeProc
		End If
	End Sub

	Private Sub _gcApplicationZoom_GcZoomDetached(sender As Object, e As GcZoomDetachedEventArgs)
		If TypeOf e.Form Is ZoomForm Then
			RemoveHandler e.GcZoom.ZoomFactorChanged, AddressOf TryCast(e.Form, ZoomForm).ZoomFactorChangeProc
		End If
	End Sub

	Private Sub _showFormButton_Click(sender As Object, e As EventArgs)
		Dim form As Form = New ZoomForm()
		form.Show()
	End Sub

	Private Sub _showForm2Button_Click(sender As Object, e As EventArgs)
		Dim form As Form = New NormalForm()
		form.Show()
	End Sub

	Private Sub InitializeComponent()
		_gcApplicationZoom = New GcApplicationZoom()

		_showFormButton = New Button()
		_showFormButton.Text = "Click to open ZoomForm"
		_showFormButton.Location = New Point(20, 20)
		_showFormButton.Size = New Size(200, 40)

		_showForm2Button = New Button()
		_showForm2Button.Text = "Click to open NormalForm"
		_showForm2Button.Location = New Point(20, 80)
		_showForm2Button.Size = New Size(200, 40)

		Me.Controls.Add(_showFormButton)
		Me.Controls.Add(_showForm2Button)
	End Sub
End Class

Friend Class ZoomForm
	Inherits Form
	Private _showFormButton As Button

	Public Sub New()
		InitializeComponent()

		AddHandler _showFormButton.Click, AddressOf _showFormButton_Click
	End Sub

	Public Sub ZoomFactorChangeProc(sender As Object, e As EventArgs)
		Console.WriteLine(GcApplicationZoom.GetGcZoom(Me).ZoomFactor.ToString())
	End Sub

	Private Sub _showFormButton_Click(sender As Object, e As EventArgs)
		Dim form As Form = New ZoomForm()
		form.Show()
	End Sub

	Private Sub InitializeComponent()
		_showFormButton = New Button()
		_showFormButton.Text = "Click to open a new form"
		_showFormButton.Location = New Point(20, 20)
		_showFormButton.Size = New Size(200, 40)
		Me.Controls.Add(_showFormButton)
	End Sub
End Class

Friend Class NormalForm
	Inherits Form
	Private _showFormButton As Button

	Public Sub New()
		InitializeComponent()

		AddHandler _showFormButton.Click, AddressOf _showFormButton_Click
	End Sub

	Private Sub _showFormButton_Click(sender As Object, e As EventArgs)
		Dim form As Form = New NormalForm()
		form.Show()
	End Sub

	Private Sub InitializeComponent()
		_showFormButton = New Button()
		_showFormButton.Text = "Click to open a new form"
		_showFormButton.Location = New Point(20, 20)
		_showFormButton.Size = New Size(200, 40)
		Me.Controls.Add(_showFormButton)
	End Sub
End Class

Constructors

Name	Description
C1ApplicationZoom()	Initializes a new instance of the C1ApplicationZoom class.
C1ApplicationZoom(IContainer)	Initializes a new instance of the C1ApplicationZoom class.

Properties

Name	Description
AllowDoubleTapZoom	Gets or sets a value indicating whether allow double tap to zoom. ZoomFactor will change to 2f or MaxZoomFactor if it is less than 2f before double tap; otherwise, it will change to 1f.
AllowMouseWheelScroll	Gets or sets which types of MouseWheel scroll are possible.
AllowMouseWheelZoom	Gets or sets a value indicating whether allow zoom by control + mouse wheel.
AllowPanScroll	Gets or sets a value indicating whether allow scroll the form by pan gesture.
AllowPinchZoom	Gets or sets a value indicating whether the form can perform gesture zoom.
AllowResizeByZoom	Gets or sets a value that indicates whether resize form when zooming form.
AllowZoomByResize	Gets or sets a value that indicates whether zoom form when resizing form.
AlternativeContentSettings	Gets the settings indicating how to display zoom factor when gesture zooming.
AutoShowControl	Gets or sets a value that indicates whether the control auto show when get focus or touch keyboard popup.
BackColor	Gets or sets the background color of blank areas in Form when to zoom and scroll.
BackgroundImage	Gets or sets the background image displayed in the blank areas of Form when to zoom and scroll.
BackgroundImageLayout	Gets or sets the background image layout as defined in the ImageLayout enumeration.
BoundaryFeedbackMode	Gets or sets a value indicating how to show visual feedback when scroll reach end point.
ControlBars	Gets the collection of ControlBar contained within the C1Zoom.
DefaultZoomPolicies	Gets the default zoom policies.
FullScreenMode	Gets or sets the full screen mode used by owner form.
InnerPanelLayoutMode	Gets or sets the layout mode of InnerPanel.
IsHorizontalRailEnabled	Gets or sets a value that indicates whether the scroll rail is enabled for the horizontal axis.
IsVerticalRailEnabled	Gets or sets a value that indicates whether the scroll rail is enabled for the vertical axis.
KeepAspectRatio	Gets or sets a value indicating whether to keep aspect ratio when resize the form.
MaxZoomFactor	Gets or sets the maximum zoom factor of the form.
ScrollIndicatorMode	Gets or sets a value indicating which mode to indicate current scroll location.
ZoomPolicies	Gets the custom zoom policies. C1Zoom will look for zoom policies in this list.
ZoomPreviewMode	Gets or sets a value indicating how to preview the form when gesture zooming.
ZoomSnapDistance	Gets or sets a value indicate the minimum distance that can cause current zoom factor snap to a zoom factor in ZoomSnapPoints.
ZoomSnapPoints	Gets a group of zoom factor, when zoom ending, the result zoom factor will try to snap to a zoom factor in this group.

Methods

Name	Description
AboutBox()	Shows the product information window.
Dispose(bool)	Releases the unmanaged resources used by the Component and optionally releases the managed resources.
GetC1Zoom(Form)	Gets the associated C1Zoom by a specific form.
OnC1ZoomAttached(C1ZoomAttachedEventArgs)	Raises the C1ZoomAttached event.
OnC1ZoomAttaching(C1ZoomAttachingEventArgs)	Raises the C1ZoomAttaching event.
OnC1ZoomDetached(C1ZoomDetachedEventArgs)	Raises the C1ZoomDetached event.

Events

Name	Description
C1ZoomAttached	Occurs when the C1Zoom component has attached to a Form.
C1ZoomAttaching	Occurs when the C1Zoom component is preparing attach to a Form.
C1ZoomDetached	Occurs when the C1Zoom component has detached from a Form.