程序来自做拍照软件,用户拍照的时候,可以先看效果图,再选择是否要这张,我的思路是,先保存,之后显示,最后选择是否确定,不要的话,再删除.
刚开始选择了Uri这个方法,没通,因为Uri连的是程序内资源,并非本地
不过也把方法放着,来自:http://www.cnblogs.com/ErinCodeMM/archive/2011/04/07/2008819.html
WPF引入了统一资源标识Uri(Unified Resource Identifier)来标识和访问资源。其中较为常见的情况是用Uri加载图像。Uri表达式的一般形式为:协议+授权+路径 协议:pack:// 授权:有两种。一种用于访问编译时已经知道的文件,用application:///。一种用于访问编译时不知道、运行时才知道的文件,用siteoforigin:///。在这里加载图片时,我们选用前者,即application:///,但是书写时候,我们一般用逗号代替斜杠,也就是改写作application:,,,。 路径:分为绝对路径和相对路径。这里我们选用相对路径,普适性更强。 下面,我们举一个简单的例子: pack://application:,,,/images/my.jpg 当然,WPF默认Uri设置有pack://application:,,,,所以我们也可以直接将其写作: /images/my.jpg 后边写例子程序时,为了让读者更好的了解Uri,我们都采用完整的Uri写法。 下面在讲讲装载图片的两种方式,一种用XAML引用资源,一种用代码引用资源。 用XAML引用资源: <Image Source="pack://application:,,,/images/my.jpg"/> 用代码引用资源: Image img; img.Source=new BitmapImage(new Uri("pack://application:,,,/images/my.jpg"),UriKind.Relative); 我们写一个例子代码。在其中运用XAML,代码两种方式引用资源。 Window1.xaml ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 <Window x:Class="testURI.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="400" Width="240"> <!--堆积面板是最简单的控制面板--> <StackPanel> <!--1.XAML中引用图片资源--> <!--也可用Image Name="image1" Source="pack://application:,,,/images/1.jpg" Height="165" Width="220"/--> <Image Name="image1" Source="pack://application:,,,/images/1.jpg" Height="165" Width="220"/> <!--定义Image对象,但是没有指定图片源,待在代码中指定Source源--> <Image Name="image2" Height="165" Width="220"/> </StackPanel> </Window> Window1.xaml.cs ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; namespace testURI { public partial class Window1 : Window { public Window1() { InitializeComponent(); //2.代码中引用图片资源 image2.Source = new BitmapImage(new Uri("/images/2.jpg", UriKind.Relative)); } } }
下面这段代码来自:http://www.cnblogs.com/yunyou/archive/2013/01/25/2876054.html
private void SetSource(System.Windows.Controls.Image image, string fileName) 2 { 3 System.Drawing.Image sourceImage = System.Drawing.Image.FromFile(fileName); 4 int imageWidth = 0, imageHeight = 0; 5 InitializeImageSize(sourceImage, image, out imageWidth, out imageHeight); 6 7 Bitmap sourceBmp = new Bitmap(sourceImage, imageWidth, imageHeight); 8 IntPtr hBitmap = sourceBmp.GetHbitmap(); 9 BitmapSource bitmapSource = Imaging.CreateBitmapSourceFromHBitmap(hBitmap, IntPtr.Zero, Int32Rect.Empty, 10 BitmapSizeOptions.FromEmptyOptions()); 11 bitmapSource.Freeze(); 12 WriteableBitmap writeableBmp = new WriteableBitmap(bitmapSource); 13 sourceImage.Dispose(); 14 sourceBmp.Dispose(); 15 image.Source = writeableBmp; 16 } 17 18 /// <summary> 19 /// Initialize ImageSize. 20 /// </summary> 21 /// <param name="sourceImage"></param> 22 /// <param name="image"></param> 23 /// <param name="imageWidth"></param> 24 /// <param name="imageHeight"></param> 25 private static void InitializeImageSize(System.Drawing.Image sourceImage, System.Windows.Controls.Image image, 26 out int imageWidth, out int imageHeight) 27 { 28 int width = sourceImage.Width; 29 int height = sourceImage.Height; 30 float aspect = (float)width / (float)height; 31 if (image.Height != double.NaN) 32 { 33 imageHeight = Convert.ToInt32(image.Height); 34 imageWidth = Convert.ToInt32(aspect * imageHeight); 35 } 36 else if (image.Width != double.NaN) 37 { 38 imageWidth = Convert.ToInt32(image.Width); 39 imageHeight = Convert.ToInt32(image.Width / aspect); 40 } 41 else 42 { 43 imageHeight = 100; 44 imageWidth = Convert.ToInt32(aspect * imageHeight); 45 } 46 }
这段是我自己软件实际的代码
System.Drawing.Image sourceImage = System.Drawing.Image.FromFile(path);//path为地址 int imageWidth = 640, imageHeight = 480;//设置大小 Bitmap sourceBmp = new Bitmap(sourceImage, imageWidth, imageHeight); IntPtr hBitmap = sourceBmp.GetHbitmap(); BitmapSource bitmapSource = Imaging.CreateBitmapSourceFromHBitmap(hBitmap, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); bitmapSource.Freeze(); WriteableBitmap writeableBmp = new WriteableBitmap(bitmapSource); sourceImage.Dispose(); sourceBmp.Dispose(); this.Image.Source = writeableBmp; delOrNot = true;
接下来是判断是否想要,不要的话,删除
public KinectWindow() { InitializeComponent(); this.KeyUp += KinectWindow_KeyUp;//订阅删除键 } private void delPhoto_Click(object sender, RoutedEventArgs e) { if (delOrNot) { System.IO.File.Delete(path);//删除代码 //恢复镜头拍摄 this.Image.Source = this.colorBitmap; delOrNot = false; } } //拍照与删除照片按钮 void KinectWindow_KeyUp(object sender, KeyEventArgs e) { if (e.Key == Key.D) { // 按下“删除”键 delPhoto_Click(this, null); } if (e.Key == Key.S) { // 按下“拍摄”键 ButtonScreenshotClick(this, null); } }