protected override void OnExit()
{
SecondScreen secondScreen = (SecondScreen)window.Content;
secondScreen.labelOne.Content = "Hi";
secondScreen.buttonThree.Click -= stateChangeNextEventHandler;
secondScreen.textboxOne.TextChanged -= TextboxOne_TextChanged;
}
protected override void OnEnter()
{
SecondScreen secondScreen = (SecondScreen)window.Content;
secondScreen.labelOne.Content = "Thank you";
secondScreen.buttonThree.IsEnabled = true;
secondScreen.buttonThree.Click += stateChangeNextEventHandler;
// в задании этого явно не было указано, но я решил сделать переход в предыдущее состояние, если текст в поле изменился с "hello" на какой-либо другой:
secondScreen.textboxOne.TextChanged += TextboxOne_TextChanged;
}
protected override void OnExit()
{
SecondScreen secondScreen = (SecondScreen)window.Content;
secondScreen.textboxOne.TextChanged -= stateChangeEventHandler;
}
/// <summary>
/// 视频截取图片操作
/// </summary>
public static string SaveVideoImage(SecondScreen sc2)
{
Player PP = new Player();
double PlayW = UserControlClass.sc2.FInkCanvas_Player.ActualWidth;
double PlayH = UserControlClass.sc2.FInkCanvas_Player.ActualHeight;
string PlayPath = "";
string PlayFormat = "";
FileInfo finfo = new FileInfo(AppDomain.CurrentDomain.BaseDirectory + @"\XML\" + "Screen.xml");
if (finfo.Exists)
{
//读取XML文档信息
XmlDocument PlayXml = new XmlDocument();
PlayXml.Load(AppDomain.CurrentDomain.BaseDirectory + @"\XML\" + "Screen.xml");
XmlNode PlayNode = PlayXml.SelectSingleNode("Screen");
XmlElement PlayElement = (XmlElement)PlayNode;
//获取保存图片位置
PlayPath = PlayElement["Location"].InnerText + "\\";
//获取保存图片格式
PlayFormat = PlayElement["Format"].InnerText;
}
if (string.IsNullOrEmpty(PlayPath))
{
PlayPath = "C:\\";
}
if (string.IsNullOrEmpty(PlayFormat))
{
PlayFormat = ".bmp";
}
//GUID（全局统一标识符）
string reValue = string.Format("{0}{1}" + PlayFormat + "", PlayPath, Guid.NewGuid().ToString());
RenderTargetBitmap RenderBit = new RenderTargetBitmap(Convert.ToInt32(PlayW), Convert.ToInt32(PlayH), 1 / 200, 1 / 200, PixelFormats.Pbgra32);
DrawingVisual PlayVisual = new DrawingVisual();
DrawingContext PlayContext = PlayVisual.RenderOpen();
PlayContext.DrawVideo(UserControlClass.MPPlayer, new Rect(0, 0, PlayW, PlayH));
PlayContext.Close();
RenderBit.Render(PlayVisual);
if (PlayFormat == ".bmp")
{
BmpBitmapEncoder bmpEncoder = new BmpBitmapEncoder();
bmpEncoder.Frames.Add(BitmapFrame.Create(RenderBit));
FileStream fileStream = new FileStream(reValue, FileMode.Create, FileAccess.ReadWrite);
bmpEncoder.Save(fileStream);
fileStream.Close();
System.Windows.Forms.MessageBox.Show("保存位置:" + reValue);
return(reValue);
}
else if (PlayFormat == ".jpg")
{
JpegBitmapEncoder jpgEncoder = new JpegBitmapEncoder();
jpgEncoder.Frames.Add(BitmapFrame.Create(RenderBit));
FileStream fileStream = new FileStream(reValue, FileMode.Create, FileAccess.ReadWrite);
jpgEncoder.Save(fileStream);
fileStream.Close();
System.Windows.Forms.MessageBox.Show("保存位置:" + reValue);
return(reValue);
}
else
{
PngBitmapEncoder pngEncoder = new PngBitmapEncoder();
pngEncoder.Frames.Add(BitmapFrame.Create(RenderBit));
FileStream fileStream = new FileStream(reValue, FileMode.Create, FileAccess.ReadWrite);
pngEncoder.Save(fileStream);
fileStream.Close();
System.Windows.Forms.MessageBox.Show("保存位置:" + reValue);
return(reValue);
}
}
///<summary>
///截取摄像头文件图片
///</summary>
public static string SaveCameraImage(SecondScreen win)
{
double CameraW = win.FInkCanvas_Camera.ActualWidth;
double CameraH = win.FInkCanvas_Camera.ActualHeight;
string CameraPath = "";
string CameraFormat = "";
FileInfo finfo = new FileInfo(AppDomain.CurrentDomain.BaseDirectory + @"\XML\" + "Screen.xml");
if (finfo.Exists)
{
//读取XML文档信息
XmlDocument CameraXml = new XmlDocument();
CameraXml.Load(AppDomain.CurrentDomain.BaseDirectory + @"\XML\" + "Screen.xml");
XmlNode CameraNode = CameraXml.SelectSingleNode("Screen");
XmlElement CameraElement = (XmlElement)CameraNode;
//获取保存图片位置
CameraPath = CameraElement["Location"].InnerText + "\\";
//获取保存图片格式
CameraFormat = CameraElement["Format"].InnerText;
}
if (string.IsNullOrEmpty(CameraPath))
{
CameraPath = "C:\\";
}
if (string.IsNullOrEmpty(CameraFormat))
{
CameraFormat = ".bmp";
}
//GUID（全局统一标识符）
string reValue = string.Format("{0}{1}" + CameraFormat + "", CameraPath, Guid.NewGuid().ToString());
RenderTargetBitmap RenderBit = new RenderTargetBitmap(Convert.ToInt32(CameraW), Convert.ToInt32(CameraH), 1 / 200, 1 / 200, PixelFormats.Pbgra32);
DrawingVisual CameraVisual = new DrawingVisual();
CameraVisual.Transform = new RotateTransform(180, CameraW / 2.0, CameraH / 2.0);
DrawingContext CameraContext = CameraVisual.RenderOpen();
// CameraContext.DrawImage(win.FInkCanvas_Camera.Source, new Rect(0, 0, CameraW, CameraH));
CameraContext.PushTransform(new RotateTransform(180, CameraW / 2.0, CameraH / 2.0));
CameraContext.Close();
RenderBit.Render(CameraVisual);
if (CameraFormat == ".bmp")
{
BmpBitmapEncoder bmpEncoder = new BmpBitmapEncoder();
bmpEncoder.Frames.Add(BitmapFrame.Create(RenderBit));
FileStream fileStream = new FileStream(reValue, FileMode.Create, FileAccess.ReadWrite);
bmpEncoder.Save(fileStream);
fileStream.Close();
System.Windows.Forms.MessageBox.Show("保存位置:" + reValue);
return(reValue);
}
else if (CameraFormat == ".jpg")
{
JpegBitmapEncoder jpgEncoder = new JpegBitmapEncoder();
jpgEncoder.Frames.Add(BitmapFrame.Create(RenderBit));
FileStream fileStream = new FileStream(reValue, FileMode.Create, FileAccess.ReadWrite);
jpgEncoder.Save(fileStream);
fileStream.Close();
System.Windows.Forms.MessageBox.Show("保存位置:" + reValue);
return(reValue);
}
else
{
PngBitmapEncoder pngEncoder = new PngBitmapEncoder();
pngEncoder.Frames.Add(BitmapFrame.Create(RenderBit));
FileStream fileStream = new FileStream(reValue, FileMode.Create, FileAccess.ReadWrite);
pngEncoder.Save(fileStream);
fileStream.Close();
System.Windows.Forms.MessageBox.Show("保存位置:" + reValue);
return(reValue);
}
}
