UI-Cropping-Image

A simply UI cropping image library for WPF that use adroner layer. Some screenshots:

Interface of sample app

Cropping result image

Cropping result image info

Main Workflow:

1. Load image
2. Select cropping area
3. Crop and save image

Main features:

• Can draw/redraw cropping rectangle
• Can move cropping rectangle
• Can resize cropping rectangle
• Shadow area outside of cropping rectangle
• Show current size of cropping rectangle

Basic Setup

XAML:

In order to properly handle image size, set SizeToContent ="WidthAndHeight" to window. There is a custom user control CropToolControl.xaml, that holds all necessary elements to handle crop operation. Just add this <croppingImageLibrary:CropToolControl Name="CropTool"></croppingImageLibrary:CropToolControl>

Here is a example in CroppingWindow.xaml

<Window x:Class="CroppingImageLibrary.SampleApp.CroppingWindow"
       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"
       xmlns:croppingImageLibrary="clr-namespace:CroppingImageLibrary;assembly=CroppingImageLibrary"
       mc:Ignorable="d"
       Title="CroppingWindow" ResizeMode="NoResize" WindowStartupLocation="Manual" SizeToContent ="WidthAndHeight">
   <croppingImageLibrary:CropToolControl Name="CropTool"></croppingImageLibrary:CropToolControl>
</Window>

Code Behind:
You need to pass image to user control, here is simple way describe in CroppingWindow.xaml.cs

   public partial class CroppingWindow : Window
   {
       public CroppingWindow()
       {
           InitializeComponent();
       }

       public CroppingWindow(BitmapImage bitmapImage)
       {
           InitializeComponent();
           //  pass data to custom user control
           CropTool.SetImage(bitmapImage);
       }
   }

This library return only crop area, not cropped image itself. You need to perform crop operation manually. To get crop area, call CropTool.CropService.GetCroppedArea()