Int32Rect Structure
Assembly: WindowsBase (in windowsbase.dll)
XML Namespace: http://schemas.microsoft.com/winfx/2006/xaml/presentation
[SerializableAttribute] [TypeConverterAttribute(typeof(Int32RectConverter))] public struct Int32Rect : IFormattable
/** @attribute SerializableAttribute() */ /** @attribute TypeConverterAttribute(System.Windows.Int32RectConverter) */ public final class Int32Rect extends ValueType implements IFormattable
<object property="X,Y,Width,Height"/> - or <object property="Empty"/>
You can also use whitespace instead of commas to delimit values. Whitespace can also be used with a comma delimited value set.
X System.Int32 The x-coordinate of the top-left corner of the rectangle. Y System.Int32 The y-coordinate of the top-left corner of the rectangle. Width System.Int32 The width of the rectangle. Height System.Int32 The height of the rectangle.
This example shows how to crop an image using CroppedBitmap.
CroppedBitmap is primarily used when encoding a cropped version of an image to save out to a file. To crop an image for display purposes see the Create a Clip Region topic.
The following Extensible Application Markup Language (XAML) defines resources used within the samples below.
<Page.Resources> <!-- Define some image resources, for use as the image element source. --> <BitmapImage x:Key="masterImage" UriSource="/sampleImages/gecko.jpg" /> <CroppedBitmap x:Key="croppedImage" Source="{StaticResource masterImage}" SourceRect="30 20 105 50"/> </Page.Resources>
<Page.Resources> <!-- Define some image resources, for use as the image element source. --> <BitmapImage x:Key="masterImage" UriSource="/sampleImages/gecko.jpg" /> <CroppedBitmap x:Key="croppedImage" Source="{StaticResource masterImage}" SourceRect="30 20 105 50"/> </Page.Resources>
The following example creates an image using a CroppedBitmap as its source.
<!-- Use the cropped image resource as the images source --> <Image Width="200" Source="{StaticResource croppedImage}" Margin="5" Grid.Column="0" Grid.Row="1" />
<!-- Use the cropped image resource as the images source --> <Image Width="200" Source="{StaticResource croppedImage}" Margin="5" Grid.Column="0" Grid.Row="1" />
// Create an Image element. Image croppedImage = new Image(); croppedImage.Width = 200; croppedImage.Margin = new Thickness(5); // Create a CroppedBitmap based off of a xaml defined resource. CroppedBitmap cb = new CroppedBitmap( (BitmapSource)this.Resources["masterImage"], new Int32Rect(30, 20, 105, 50)); //select region rect croppedImage.Source = cb; //set image source to cropped
The CroppedBitmap can also be used as the source of another CroppedBitmap, chaining the cropping. Note that the SourceRect uses values that are relative to the source cropped bitmap and not the initial image.
<!-- Chain a cropped bitmap off a previosly defined cropped image --> <Image Width="200" Grid.Column="0" Grid.Row="3" Margin="5"> <Image.Source> <CroppedBitmap Source="{StaticResource croppedImage}" SourceRect="30 0 75 50"/> </Image.Source> </Image>
<!-- Chain a cropped bitmap off a previosly defined cropped image --> <Image Width="200" Grid.Column="0" Grid.Row="3" Margin="5"> <Image.Source> <CroppedBitmap Source="{StaticResource croppedImage}" SourceRect="30 0 75 50"/> </Image.Source> </Image>
// Create an Image element. Image chainImage = new Image(); chainImage.Width = 200; chainImage.Margin = new Thickness(5); // Create the cropped image based on previous CroppedBitmap. CroppedBitmap chained = new CroppedBitmap(cb, new Int32Rect(30, 0, (int)cb.Width-30, (int)cb.Height)); // Set the image's source. chainImage.Source = chained;
For the complete sample, see Image Element Sample.
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.