ImageViewerCoordinateType Enumeration

Summary

Defines the coordinate system of a point.

Syntax

C++/CLI

public enum ImageViewerCoordinateType

public enum class ImageViewerCoordinateType sealed

Members

0	Control	(0) Point is in control (client) coordinate. For example obtained from a mouse or touch event
1	View	(1) View coordinate. Transform using ImageViewer.ViewTransform
2	Item	(2) Item coordinates. Transform using ImageViewer.GetItemTransform
3	Content	(3) Content coordinates. Transform using ImageViewer.GetItemContentTransform
4	Image	(4) Image coordinates. Transform using ImageViewer.GetItemImageTransform
5	Floater	(5) Floater coordinates. Transform using ImageViewer.GetItemFloaterTransform

Remarks

For more information, refer to Image Viewer Appearance, Image Viewer Items, Image Viewer Transformation, Image Viewer Bounds and Transform and Image Viewer Layouts.

Example

using Leadtools; 
using Leadtools.Controls; 
using Leadtools.Codecs; 
using Leadtools.Drawing; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
 
 
public void ImageViewerItemTransform_Example(int dy, LeadPoint position) 
{ 
   double total = _imageViewer.GetItemViewBounds(_imageViewer.ActiveItem, ImageViewerItemPart.Item, false).Height; 
   double factor; 
 
   if (total > 0) 
      factor = 1.0 - (dy * 2.0) / total; 
   else 
      factor = 1.0; 
 
   // Get the origin in image coordinate 
   var origin = _imageViewer.ConvertPoint(_imageViewer.ActiveItem, ImageViewerCoordinateType.Control, ImageViewerCoordinateType.Image, position).ToLeadPointD(); 
   // Convert it to whatever the current transform is 
   origin = _imageViewer.ActiveItem.Transform.Transform(origin); 
 
   var transform = LeadMatrix.Identity; 
   transform.ScaleAt(1 / factor, 1 / factor, origin.X, origin.Y); 
   _imageViewer.ActiveItem.Transform = LeadMatrix.Multiply(_imageViewer.ActiveItem.Transform, transform); 
}

Requirements

Target Platforms

Reference

Leadtools.Controls Namespace

Download our FREE evaluation

Help Version 22.0.2023.1.24

Leadtools.Controls Assembly

Introduction

Getting Started

Namespaces

Leadtools.Controls Namespace

Assemblies