A Leadtools.LeadRect object that specifies the part of the image to use as the display source.
The coordinates in the srcRect rectangle are relative to the image. You can pass Rectangle.Empty to use the default, which matches the image.
A Leadtools.LeadRect object specifies the portion of the display source to paint. Generally, this is used for updating the display when part of the source image has changed.
The coordinates in the srcClipRect rectangle are relative to the image. You can pass Rectangle.Empty to use the default, which matches the image
A Leadtools.LeadRect object that determines how the source rectangle is scaled and how the image is positioned in the destination graphics object.
The coordinates in the destRect object are relative to the graphics object. There is no default for this parameter. You must specify the Leadtools.LeadRect object.
A Leadtools.LeadRect object that specifies the portion of the display rectangle to paint. Generally, this is used for updating changes in the display surface, such as when a user moves another window, uncovering a part of the image that had been covered up.
The coordinates in the destClipRect are relative to the System.Drawing.Graphics object. You can pass Rectangle.Empty to use the default, which matches the System.Drawing.Graphics object. In most cases, however, you should use the rectangle returned by the .NET PaintEventArgs.ClipRectangle or Windows WM_PAINT message.
public static void PaintRegion( RasterImage image, Graphics graphics, LeadRect srcRect, LeadRect srcClipRect, LeadRect destRect, LeadRect destClipRect, RasterPaintProperties properties )
'Declaration Public Overloads Shared Sub PaintRegion( _ ByVal image As RasterImage, _ ByVal graphics As Graphics, _ ByVal srcRect As LeadRect, _ ByVal srcClipRect As LeadRect, _ ByVal destRect As LeadRect, _ ByVal destClipRect As LeadRect, _ ByVal properties As RasterPaintProperties _ )
'Usage Dim image As RasterImage Dim graphics As Graphics Dim srcRect As LeadRect Dim srcClipRect As LeadRect Dim destRect As LeadRect Dim destClipRect As LeadRect Dim properties As RasterPaintProperties RasterImagePainter.PaintRegion(image, graphics, srcRect, srcClipRect, destRect, destClipRect, properties)
public: static void PaintRegion( RasterImage^ image, Graphics^ graphics, LeadRect srcRect, LeadRect srcClipRect, LeadRect destRect, LeadRect destClipRect, RasterPaintProperties properties )
A Leadtools.LeadRect object that specifies the part of the image to use as the display source.
The coordinates in the srcRect rectangle are relative to the image. You can pass Rectangle.Empty to use the default, which matches the image.
A Leadtools.LeadRect object specifies the portion of the display source to paint. Generally, this is used for updating the display when part of the source image has changed.
The coordinates in the srcClipRect rectangle are relative to the image. You can pass Rectangle.Empty to use the default, which matches the image
A Leadtools.LeadRect object that determines how the source rectangle is scaled and how the image is positioned in the destination graphics object.
The coordinates in the destRect object are relative to the graphics object. There is no default for this parameter. You must specify the Leadtools.LeadRect object.
A Leadtools.LeadRect object that specifies the portion of the display rectangle to paint. Generally, this is used for updating changes in the display surface, such as when a user moves another window, uncovering a part of the image that had been covered up.
The coordinates in the destClipRect are relative to the System.Drawing.Graphics object. You can pass Rectangle.Empty to use the default, which matches the System.Drawing.Graphics object. In most cases, however, you should use the rectangle returned by the .NET PaintEventArgs.ClipRectangle or Windows WM_PAINT message.
This method works the same as Paint(RasterImage,Graphics,LeadRect,RasterPaintProperties), except that only the image region is painted.
Imports Leadtools Imports Leadtools.Codecs Imports Leadtools.Drawing Imports Leadtools.ImageProcessing Public Sub PaintRegionExample() Dim f As New PaintRegionForm() f.ShowDialog() End Sub Class PaintRegionForm Inherits Form Private image As RasterImage Public Sub New() ' Load the image Dim codecs As New RasterCodecs() Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp") image = codecs.Load(srcFileName) ' add a region to the image image.AddEllipseToRegion( _ RasterRegionXForm.Default, _ New LeadRect(image.Width \ 4, image.Height \ 4, image.Width \ 2, image.Height \ 2), _ RasterRegionCombineMode.Set) Text = "PaintRegion Example" End Sub Protected Overrides Sub Dispose(ByVal disposing As Boolean) ' Clean up If disposing Then image.Dispose() End If MyBase.Dispose(disposing) End Sub Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs) ' Draw the image fit and center on this form Dim destRect As LeadRect = LeadRect.FromLTRB(ClientRectangle.Left, ClientRectangle.Top, ClientRectangle.Right, ClientRectangle.Bottom) destRect = RasterImage.CalculatePaintModeRectangle( _ image.ImageWidth, _ image.ImageHeight, _ destRect, _ RasterPaintSizeMode.Fit, _ RasterPaintAlignMode.Center, _ RasterPaintAlignMode.Center) RasterImagePainter.PaintRegion(image, e.Graphics, LeadRect.Empty, LeadRect.Empty, destRect, LeadRect.Empty, RasterPaintProperties.Default) MyBase.OnPaint(e) End Sub End Class Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class
using Leadtools; using Leadtools.Codecs; using Leadtools.Drawing; using Leadtools.ImageProcessing; public void PaintRegionExample() { PaintRegionForm f = new PaintRegionForm(); f.ShowDialog(); } class PaintRegionForm : Form { private RasterImage image; public PaintRegionForm() { // Load the image RasterCodecs codecs = new RasterCodecs(); string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); image = codecs.Load(srcFileName); // add a region to the image image.AddEllipseToRegion( RasterRegionXForm.Default, new LeadRect(image.Width / 4, image.Height / 4, image.Width / 2, image.Height / 2), RasterRegionCombineMode.Set); Text = "PaintRegion Example"; } protected override void Dispose(bool disposing) { // Clean up if(disposing) { image.Dispose(); } base.Dispose(disposing); } protected override void OnPaint(PaintEventArgs e) { // Draw the image fit and center on this form LeadRect destRect = LeadRect.FromLTRB(ClientRectangle.Left, ClientRectangle.Top, ClientRectangle.Right, ClientRectangle.Bottom); destRect = RasterImage.CalculatePaintModeRectangle( image.ImageWidth, image.ImageHeight, destRect, RasterPaintSizeMode.Fit, RasterPaintAlignMode.Center, RasterPaintAlignMode.Center); RasterImagePainter.PaintRegion(image, e.Graphics, LeadRect.Empty, LeadRect.Empty, destRect, LeadRect.Empty, RasterPaintProperties.Default); base.OnPaint(e); } } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; }