Mega Code Archive
Zoom a MultiScaleImage
<![CDATA[
<UserControl x:Class='SilverlightApplication3.MainPage'
xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'
xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
xmlns:d='http://schemas.microsoft.com/expression/blend/2008'
xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006'
mc:Ignorable='d'
d:DesignWidth='640'
d:DesignHeight='480'>
<Grid x:Name="LayoutRoot" Background="White">
<MultiScaleImage x:Name="myMultiScaleImage" Source="images/dzc_output.xml" />
</Grid>
</UserControl>
//File: Page.xaml.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
namespace SilverlightApplication3
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
this.KeyDown += new KeyEventHandler(Page_KeyDown);
this.KeyUp += new KeyEventHandler(Page_KeyUp);
myMultiScaleImage.MouseLeftButtonDown += new MouseButtonEventHandler(myMultiScaleImage_MouseLeftButtonDown);
}
private bool shouldZoom = true;
void Page_KeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.Shift)
shouldZoom = false;
}
void Page_KeyUp(object sender, KeyEventArgs e)
{
shouldZoom = true;
}
void myMultiScaleImage_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
Point point = e.GetPosition(myMultiScaleImage);
point = myMultiScaleImage.ElementToLogicalPoint(point);
if (shouldZoom == true)
myMultiScaleImage.ZoomAboutLogicalPoint(1.5, point.X, point.Y);
else
myMultiScaleImage.ZoomAboutLogicalPoint(0.5, point.X, point.Y);
}
}
}
]]>