TranslateItemScaleFactor Method

Summary

Translates an item horizontally or vertically a given amount of pixels regardless of the current zoom value.

Syntax

C++

public void TranslateItemScaleFactor( 
   ImageViewerItem item, 
   double dx, 
   double dy, 
   bool resetValues 
)

Public Sub TranslateItemScaleFactor( 
   ByVal item As ImageViewerItem, 
   ByVal dx As Double, 
   ByVal dy As Double, 
   ByVal resetValues As Boolean 
)

public:  
   void TranslateItemScaleFactor( 
      ImageViewerItem^ item, 
      double dx, 
      double dy, 
      bool resetValues 
   )

Parameters

item

The item to translate. This parameter cannot be null.

Number of pixels to translate the item horizontally.

Number of pixels to translate the item vertically.

resetValues

true to reset the item state transformations, otherwise; false.

Remarks

This is a helper method to quickly transform an item a specified amount of pixels regardless of the current zoom value.

Example

This example will add a few items to the ImageViewer and then create a new interactive mode that transform the item using mouse or touch.

Run the demo. Click on any item and drag to translate, CTRL-click to zoom the item in and out.

Start with the ImageViewer example, remove all the code inside the example function (search for the "// TODO: add example code here" comment) and insert the following code:

using Leadtools; 
using Leadtools.Controls; 
using Leadtools.Codecs; 
using Leadtools.Drawing; 
using LeadtoolsExamples.Common; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
 
public void ImageViewerTranslateItemScaleFactor_Example(int dx, int dy) 
{ 
   if (dx == 0 && dy == 0) 
      return; 
 
   _imageViewer.TranslateItemScaleFactor(_imageViewer.ActiveItem, -dx, -dy, true); 
}

Imports Leadtools 
Imports Leadtools.Controls 
Imports Leadtools.Codecs 
Imports Leadtools.Drawing 
Imports Leadtools.ImageProcessing 
Imports Leadtools.ImageProcessing.Color 
Imports LeadtoolsControlsExamples.LeadtoolsExamples.Common 
 
Public Sub ImageViewerTranslateItemScaleFactor_Example(ByVal dx As Integer, ByVal dy As Integer) 
   If dx = 0 AndAlso dy = 0 Then 
      Return 
   End If 
 
   _imageViewer.TranslateItemScaleFactor(_imageViewer.ActiveItem, -dx, -dy, True) 
End Sub

Requirements

Target Platforms

Reference

ImageViewer Class

ImageViewer Members

Leadtools.Controls Namespace

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Help Version 20.0.2020.4.3

Leadtools.Controls Assembly

Introduction

Getting Started

Namespaces

Leadtools.Controls Namespace

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