ImageViewer Class (original) (raw)
Summary
Represents a scrollable control that displays one or more raster or SVG images with optional interactive UI operations.
Syntax
public class ImageViewer : ScrollableControl, INotifyPropertyChanged @interface LTImageViewer : NSView<NSCoding> public ref class ImageViewer : System::Windows::Forms::ScrollableControl Example
This example will create an ImageViewer, set the interactive mode to Pan/Zoom, and add an image to it.
using Leadtools;
using Leadtools.Controls;
using Leadtools.Codecs;
using Leadtools.Drawing;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
public void ImageViewer_Example()
{
// Create the form that holds the ImageViewer
new MyForm().ShowDialog();
}
class MyForm : Form
{
public MyForm()
{
this.Size = new Size(800, 800);
}
// LEADTOOLS ImageViewer to be used with this example
private ImageViewer _imageViewer;
// Information label
private Label _label;
protected override void OnLoad(EventArgs e)
{
// Create a panel to the top
var panel = new Panel();
panel.Dock = DockStyle.Top;
panel.BorderStyle = BorderStyle.FixedSingle;
this.Controls.Add(panel);
// Add an "Example" button to the panel
var button = new Button();
button.Text = "&Example";
button.Click += (sender, e1) => Example();
panel.Controls.Add(button);
// Add a label to the panel
_label = new Label();
_label.Top = button.Bottom;
_label.Width = 800;
_label.Text = "Example...";
panel.Controls.Add(_label);
// Create the image viewer taking the rest of the form
_imageViewer = new ImageViewer();
_imageViewer.Dock = DockStyle.Fill;
_imageViewer.BackColor = Color.Bisque;
this.Controls.Add(_imageViewer);
_imageViewer.BringToFront();
// Add Pan/Zoom interactive mode
// Click and drag to pan, CTRL-Click and drag to zoom in and out
_imageViewer.DefaultInteractiveMode = new ImageViewerPanZoomInteractiveMode();
// Load an image
using (var codecs = new RasterCodecs())
_imageViewer.Image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "image1.cmp"));
base.OnLoad(e);
}
private void Example()
{
// Example code goes here
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}