/// <summary>
/// Gets a render of the current UIElement
/// </summary>
/// <param name="source">UIElement to screenshot</param>
/// <param name="dpi">The DPI of the source.</param>
/// <param name="size">The size of the destination image.</param>
/// <returns>An ImageSource</returns>
public static RenderTargetBitmap GetRender(this Grid source, double dpi, System.Windows.Size?size = null)
{
var bounds = VisualTreeHelper.GetDescendantBounds(source);
var scale = Math.Round(dpi / 96d, 2);
var width = size?.Width ?? (bounds.Width + bounds.X) * scale;
var height = size?.Height ?? (bounds.Height + bounds.Y) * scale;
var rtb = new RenderTargetBitmap((int)Math.Round(width), (int)Math.Round(height), dpi, dpi, PixelFormats.Pbgra32);
var dv = new DrawingVisual();
using (var ctx = dv.RenderOpen())
{
var vb = new VisualBrush(source);
var locationRect = new System.Windows.Point(bounds.X, bounds.Y);
var sizeRect = new System.Windows.Size(bounds.Width, bounds.Height);
ctx.DrawRectangle(vb, null, new Rect(locationRect, sizeRect));
}
rtb.Render(dv);
return((RenderTargetBitmap)rtb.GetAsFrozen());
}
private void Export(string filter, bool useXaml, System.Windows.Size?size = null)
{
var saveFileDialog = new SaveFileDialog
{
Filter = filter,
InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop)
};
if (saveFileDialog.ShowDialog() == true)
{
var surface = ParentSurface as SciChartSurface;
if (surface == null)
{
return;
}
var exportType = filter.ToUpper().Contains("XPS") ? ExportType.Xps : ExportType.Png;
if (size.HasValue)
{
surface.ExportToFile(saveFileDialog.FileName, exportType, useXaml, size.Value);
}
else
{
surface.ExportToFile(saveFileDialog.FileName, exportType, useXaml);
}
Process.Start(saveFileDialog.FileName);
}
}
public static Bitmap Resize(string path, System.Windows.Size?size = null)
{
var m_size = size ?? new System.Windows.Size((double)480, (double)360);
var bitmap = Bitmap.FromFile(path) as Bitmap;
return(Resize(bitmap, m_size));
}
public void Show(System.Windows.Size?defaultSize)
{
if (innerCanvas != null)
{
innerCanvas.DefaultSize = defaultSize;
}
Show();
Focus();
}
protected override System.Windows.Size MeasureOverride(System.Windows.Size availableSize)
{
if (Element?.MeasureOverrideDelegate == null)
return base.MeasureOverride(availableSize);
// The user has specified a different implementation of MeasureOverride
System.Windows.Size? result = Element.MeasureOverrideDelegate(this, availableSize);
// If the delegate returns a Size, we use it;
// if it returns null, fall back to the default implementation
return result ?? base.MeasureOverride(availableSize);
}
protected override System.Windows.Size ArrangeOverride(System.Windows.Size finalSize)
{
if (Element?.ArrangeOverrideDelegate == null)
return base.ArrangeOverride(finalSize);
// The user has specified a different implementation of ArrangeOverride
System.Windows.Size? result = Element.ArrangeOverrideDelegate(this, finalSize);
// If the delegate returns a Size, we use it;
// if it returns null, fall back to the default implementation
return result ?? base.ArrangeOverride(finalSize);
}
void Control_SizeChanged(object sender, sw.SizeChangedEventArgs e)
{
if (previousRenderSize == Control.RenderSize)
{
return;
}
// update parents only when the render size has changed
previousRenderSize = Control.RenderSize;
if (Wrap != WrapMode.None)
{
UpdatePreferredSize();
}
}
public void Show(int timeOutSecond, System.Windows.Size?defaultSize)
{
if (timeOutSecond > 0)
{
if (timeOutTimmer == null)
{
timeOutTimmer = new Timer();
timeOutTimmer.Tick += OnTimeOutTimmerTick;
}
timeOutTimmer.Interval = timeOutSecond * 1000;
timeOutTimmer.Start();
}
if (innerCanvas != null)
{
innerCanvas.DefaultSize = defaultSize;
}
Show();
Focus();
}
public static Bitmap Resize(Bitmap p_bitmap, System.Windows.Size?size = null)
{
var m_size = size ?? new System.Windows.Size((double)480, (double)360);
using (Bitmap m_bitmap = new Bitmap((int)m_size.Width, (int)m_size.Height))
{
using (Graphics graphics = Graphics.FromImage(m_bitmap))
{
graphics.Clear(Color.FromArgb(-1));
if ((float)p_bitmap.Width / (float)m_size.Width == (float)p_bitmap.Height / (float)m_size.Height) //Target size has a 1:1 aspect ratio
{
graphics.DrawImage(p_bitmap, 0, 0, (int)m_size.Width, (int)m_size.Height);
}
else if ((float)p_bitmap.Width / (float)m_size.Width > (float)p_bitmap.Height / (float)m_size.Height) //There will be white space on the top and bottom
{
graphics.DrawImage(p_bitmap, 0f, (float)m_bitmap.Height / 2f - (p_bitmap.Height * ((float)m_bitmap.Width / (float)p_bitmap.Width)) / 2f, (float)m_bitmap.Width, p_bitmap.Height * ((float)m_bitmap.Width / (float)p_bitmap.Width));
}
else if ((float)p_bitmap.Width / (float)m_size.Width < (float)p_bitmap.Height / (float)m_size.Height) //There will be white space on the sides
{
graphics.DrawImage(p_bitmap, (float)m_bitmap.Width / 2f - (p_bitmap.Width * ((float)m_bitmap.Height / (float)p_bitmap.Height)) / 2f, 0f, p_bitmap.Width * ((float)m_bitmap.Height / (float)p_bitmap.Height), (float)m_bitmap.Height);
}
graphics.Save();
using (MemoryStream stream = new MemoryStream())
{
m_bitmap.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
var bitmap = new Bitmap(stream);
stream.Close();
return(bitmap);
}
}
}
}
void Control_SizeChanged(object sender, sw.SizeChangedEventArgs e)
{
if (previousRenderSize == null)
{
// don't update preferred sizes when called the first time.
// when there's many labels this causes a major slowdown
// the initial size should already have been taken care of by
// the initial layout pass.
previousRenderSize = Control.RenderSize;
return;
}
if (previousRenderSize == Control.RenderSize)
{
return;
}
// update parents only when the render size has changed
previousRenderSize = Control.RenderSize;
if (Wrap != WrapMode.None)
{
UpdatePreferredSize();
}
}
private void OnScreenCaputred(object sender, ScreenShot2Lib.ScreenCaputredEventArgs e)
{
//set last size
lastSize = new System.Windows.Size(e.Bmp.Width, e.Bmp.Height);
Show();
//test
var bmp = e.Bmp;
//var win = new Img { SizeToContent = SizeToContent.WidthAndHeight, ResizeMode = ResizeMode.NoResize };
Img win = new Img {
SizeToContent = SizeToContent.WidthAndHeight, ResizeMode = ResizeMode.NoResize
};
var canvas = new Canvas {
Width = bmp.Width, Height = bmp.Height, Background = new ImageBrush(bmp)
};
win.Content = canvas;
win.Show();
//
//string file="pic01";
//ImageSave(canvas,file);
var cdlg = new Microsoft.Win32.SaveFileDialog();
cdlg.Filter = "*.jpg;*.bmp|*.jpg;*.bmp|*.png|*.png";
cdlg.Title = "保存";
cdlg.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyPictures);
if (cdlg.ShowDialog(this) == true)
{
System.Windows.MessageBox.Show(cdlg.FileName);
}
SaveToImage(canvas, cdlg.FileName);
}
/// <summary>
/// Gets a render of the current UIElement
/// </summary>
/// <param name="source">UIElement to screenshot</param>
/// <param name="dpi">The DPI of the source.</param>
/// <param name="size">The size of the destination image.</param>
/// <returns>An ImageSource</returns>
public static RenderTargetBitmap GetRender(this UIElement source, double dpi, System.Windows.Size?size = null)
{
var bounds = VisualTreeHelper.GetDescendantBounds(source);
var scale = Math.Round(dpi / 96d, 2);
var width = (bounds.Width + bounds.X) * scale;
var height = (bounds.Height + bounds.Y) * scale;
#region If no bounds
if (bounds.IsEmpty)
{
var control = source as Control;
if (control != null)
{
width = control.ActualWidth * scale;
height = control.ActualHeight * scale;
}
bounds = new Rect(new System.Windows.Point(0d, 0d), new System.Windows.Point(width, height));
}
#endregion
var rtb = new RenderTargetBitmap((int)Math.Round(width), (int)Math.Round(height), dpi, dpi, PixelFormats.Pbgra32);
var dv = new DrawingVisual();
using (var ctx = dv.RenderOpen())
{
var vb = new VisualBrush(source);
var locationRect = new System.Windows.Point(bounds.X, bounds.Y);
var sizeRect = new System.Windows.Size(bounds.Width, bounds.Height);
ctx.DrawRectangle(vb, null, new Rect(locationRect, sizeRect));
}
rtb.Render(dv);
return((RenderTargetBitmap)rtb.GetAsFrozen());
}
private void OnScreenCaputred(object sender, ScreenShot2Lib.ScreenCaputredEventArgs e)
{
//set last size
lastSize = new System.Windows.Size(e.Bmp.Width, e.Bmp.Height);
Show();
//test
var bmp = e.Bmp;
//var win = new Img { SizeToContent = SizeToContent.WidthAndHeight, ResizeMode = ResizeMode.NoResize };
Img win = new Img { SizeToContent = SizeToContent.WidthAndHeight, ResizeMode = ResizeMode.NoResize };
var canvas = new Canvas { Width = bmp.Width, Height = bmp.Height, Background = new ImageBrush(bmp) };
win.Content = canvas;
win.Show();
//
//string file="pic01";
//ImageSave(canvas,file);
var cdlg = new Microsoft.Win32.SaveFileDialog();
cdlg.Filter = "*.jpg;*.bmp|*.jpg;*.bmp|*.png|*.png";
cdlg.Title = "保存";
cdlg.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyPictures);
if (cdlg.ShowDialog(this) == true)
{
System.Windows.MessageBox.Show(cdlg.FileName);
}
SaveToImage(canvas,cdlg.FileName);
}
