Class ZoomTool

Interactive tool for zooming in and out of a Diagram's view is based on the center, top-left, and pointer position using Ctrl + mouse wheel.

Inheritance
System.Object
Tool
UITool
ZoomTool
Implements
System.IDisposable
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: Syncfusion.Windows.Forms.Diagram
Assembly: Syncfusion.Diagram.Windows.dll
Syntax
public class ZoomTool : UITool, IDisposable
Remarks

Left click increases magnification by 25%. Right click decreases magnification by 25%.

Tool Magnification

Constructors

ZoomTool(DiagramController)

Initializes a new instance of the ZoomTool class.

Declaration
public ZoomTool(DiagramController controller)
Parameters
Type Name Description
DiagramController controller

The controller.

Properties

MaximumMagnification

Gets or sets maximum magnification value the tool will zoom to.

Declaration
public int MaximumMagnification { get; set; }
Property Value
Type
System.Int32

MinimumMagnification

Gets or sets minimum magnification value the tool will zoom to.

Declaration
public int MinimumMagnification { get; set; }
Property Value
Type
System.Int32

ZoomIncrement

Gets or sets the amount to zoom each time the mouse is clicked.

Declaration
public int ZoomIncrement { get; set; }
Property Value
Type
System.Int32

Methods

Draw(Graphics)

Draws the specified graphics.

Declaration
public override void Draw(Graphics gfx)
Parameters
Type Name Description
System.Drawing.Graphics gfx

Graphics to draw on.
Overrides

ProcessKeyDown(KeyEventArgs)

Processes the key down.

Declaration
public override Tool ProcessKeyDown(KeyEventArgs evtArgs)
Parameters
Type Name Description
System.Windows.Forms.KeyEventArgs evtArgs

The System.Windows.Forms.KeyEventArgs instance containing the event data.
Returns
Type Description
Tool

The tool.
Overrides

ProcessMouseDown(MouseEventArgs)

Processes the mouse down.

Declaration
public override Tool ProcessMouseDown(MouseEventArgs evtArgs)
Parameters
Type Name Description
System.Windows.Forms.MouseEventArgs evtArgs

The System.Windows.Forms.MouseEventArgs instance containing the event data.
Returns
Type Description
Tool

The tool.
Overrides

ProcessMouseMove(MouseEventArgs)

Processes the mouse move.

Declaration
public override Tool ProcessMouseMove(MouseEventArgs evtArgs)
Parameters
Type Name Description
System.Windows.Forms.MouseEventArgs evtArgs

The System.Windows.Forms.MouseEventArgs instance containing the event data.
Returns
Type Description
Tool

The tool.
Overrides

ProcessMouseUp(MouseEventArgs)

Processes the mouse up.

Declaration
public override Tool ProcessMouseUp(MouseEventArgs evtArgs)
Parameters
Type Name Description
System.Windows.Forms.MouseEventArgs evtArgs

The System.Windows.Forms.MouseEventArgs instance containing the event data.
Returns
Type Description
Tool

The tool.
Overrides

ZoomFrame(Rectangle)

Fit viewport to given frame.

Declaration
protected virtual void ZoomFrame(Rectangle rcZoom)
Parameters
Type Name Description
System.Drawing.Rectangle rcZoom

The zoom frame.

Implements

System.IDisposable