/// <summary>
/// ExportToPng
/// </summary>
/// <param name="path"></param>
/// <param name="surface"></param>
public static void ExportToPng(Uri path, Visifire.Charts.Chart surface)
{
if (path == null) return;
//Save current canvas transform 保存当前画布变换
Transform transform = surface.LayoutTransform;
//reset current transform (in case it is scaled or rotated) 重设当前画布（如果缩放或旋转）
surface.LayoutTransform = null;
//Create a render bitmap and push the surface to it 创建一个渲染位图和表面
RenderTargetBitmap renderBitmap = new RenderTargetBitmap(
(int)surface.Width,
(int)surface.Height,
96d, 96d,
PixelFormats.Pbgra32);
renderBitmap.Render(surface);
// Create a file stream for saving image
using (FileStream outStream = new FileStream(path.LocalPath, FileMode.Create))
{
//Use png encoder for our data
PngBitmapEncoder encoder = new PngBitmapEncoder();
// push the rendered bitmap to it
encoder.Frames.Add(BitmapFrame.Create(renderBitmap));
// save the data to the stream
encoder.Save(outStream);
}
// Restore previously saved layout 恢复以前保存布局
surface.LayoutTransform = transform;
}
private void AddDataSeries(string legendText, Visifire.Charts.DataSeries dataSeries, LineStyles style, SolidColorBrush brush, Visifire.Charts.RenderAs renderAs)
{
// 设置数据线的格式。
dataSeries.RenderAs = renderAs;
dataSeries.LegendText = legendText;
dataSeries.ShowInLegend = true;
dataSeries.Color = brush;
}
protected virtual void Save(String path, Visifire.Charts.ExportType exportType, Boolean showDilog)
{
if (_saveIconImage != null)
{
_saveIconImage.Visibility = Visibility.Collapsed;
_toolTip.Hide();
_toolbarContainer.UpdateLayout();
}
#if SL
try
{
WriteableBitmap bitmap = new WriteableBitmap(this, null);
#if !WP
if (bitmap != null)
{
SaveFileDialog saveDlg = new SaveFileDialog();
saveDlg.Filter = "JPEG (*.jpg)|*.jpg|BMP (*.bmp)|*.bmp";
saveDlg.DefaultExt = ".jpg";
if ((bool)saveDlg.ShowDialog())
{
using (Stream fs = saveDlg.OpenFile())
{
String[] filename = saveDlg.SafeFileName.Split('.');
String fileExt;
if (filename.Length >= 2)
{
fileExt = filename[filename.Length - 1];
exportType = (Visifire.Charts.ExportType)Enum.Parse(typeof(Visifire.Charts.ExportType), fileExt, true);
}
else
exportType = Visifire.Charts.ExportType.Jpg;
MemoryStream stream = Graphics.GetImageStream(bitmap, exportType);
// Get Bytes from memory stream and write into IO stream
byte[] binaryData = new Byte[stream.Length];
long bytesRead = stream.Read(binaryData, 0, (int)stream.Length);
fs.Write(binaryData, 0, binaryData.Length);
}
}
}
#endif
}
catch (Exception ex)
{
if (_saveIconImage != null)
{
_saveIconImage.Visibility = Visibility.Visible;
}
System.Diagnostics.Debug.WriteLine("Note: Please make sure that Height and Width of the chart is set properly.");
System.Diagnostics.Debug.WriteLine(ex.Message);
}
#else
// Matrix m = PresentationSource.FromVisual(Application.Current.MainWindow).CompositionTarget.TransformToDevice;
// double dx = m.M11* 96;
// double dy = m.M22 * 96;
// Save current canvas transform
Transform transform = this.LayoutTransform;
// reset current transform (in case it is scaled or rotated)
_rootElement.LayoutTransform = null;
// Create a render bitmap and push the surface to it
RenderTargetBitmap renderBitmap =
new RenderTargetBitmap(
(int)(this.ActualWidth),
(int)(this.ActualHeight),
96d,
96d,
PixelFormats.Pbgra32);
renderBitmap.Render(_rootElement);
if (showDilog)
{
Microsoft.Win32.SaveFileDialog saveDlg = new Microsoft.Win32.SaveFileDialog();
saveDlg.Filter = "Jpg Files (*.jpg)|*.jpg|BMP Files (*.bmp)|*.bmp";
saveDlg.DefaultExt = ".jpg";
if ((bool)saveDlg.ShowDialog())
{
BitmapEncoder encoder;
if (saveDlg.FilterIndex == 2)
encoder = new BmpBitmapEncoder();
else
encoder = new JpegBitmapEncoder();
using (Stream fs = saveDlg.OpenFile())
{
encoder.Frames.Add(BitmapFrame.Create(renderBitmap));
// save the data to the stream
encoder.Save(fs);
}
}
}
else
{
path = System.IO.Path.GetFullPath(path.Trim());
String fileName = System.IO.Path.GetFileName(path);
if (String.IsNullOrEmpty(fileName))
{
fileName = "VisifireChart";
path += fileName;
}
switch (exportType)
{
case Visifire.Charts.ExportType.Bmp:
path += ".bmp";
break;
default:
path += ".jpg";
break;
}
FileStream outStream;
// Create a file stream for saving image
using (outStream = new FileStream(path, FileMode.Create))
{
BitmapEncoder encoder;
switch (exportType)
{
case Visifire.Charts.ExportType.Bmp:
encoder = new BmpBitmapEncoder();
break;
default:
encoder = new JpegBitmapEncoder();
break;
}
// push the rendered bitmap to it
encoder.Frames.Add(BitmapFrame.Create(renderBitmap));
// save the data to the stream
encoder.Save(outStream);
}
if (outStream == null)
throw new System.IO.IOException("Unable to export the chart to an image as the specified path is invalid.");
}
// Restore previously saved layout
_rootElement.LayoutTransform = transform;
#endif
if (_saveIconImage != null && ToolBarEnabled)
_saveIconImage.Visibility = Visibility.Visible;
}
internal static void UpdateVisualObject(RenderAs chartType, Visifire.Commons.ObservableObject sender, VcProperties property, object newValue, Boolean isAXisChanged)
{
Boolean isDataPoint = sender.GetType().Equals(typeof(DataPoint));
DataPoint dataPoint = sender as DataPoint;
Chart chart = (sender as ObservableObject).Chart as Chart;
switch (chartType)
{
case RenderAs.Column:
case RenderAs.Bar:
ColumnChart.Update(sender, property, newValue, isAXisChanged);
break;
case RenderAs.Line:
case RenderAs.Spline:
LineChart.Update(sender, property, newValue, isAXisChanged);
break;
case RenderAs.QuickLine:
QuickLineChart.Update(sender, property, newValue, isAXisChanged);
break;
case RenderAs.StepLine:
StepLineChart.Update(sender, property, newValue, isAXisChanged);
break;
case RenderAs.Point:
PointChart.Update(sender, property, newValue, isAXisChanged);
break;
case RenderAs.Bubble:
BubbleChart.Update(sender, property, newValue, isAXisChanged);
break;
case RenderAs.Area:
AreaChart.Update(sender, property, newValue, isAXisChanged);
break;
case RenderAs.StackedColumn:
ColumnChart.Update(sender, property, newValue, isAXisChanged);
break;
case RenderAs.StackedColumn100:
ColumnChart.Update(sender, property, newValue, isAXisChanged);
break;
case RenderAs.StackedBar:
ColumnChart.Update(sender, property, newValue, isAXisChanged);
break;
case RenderAs.StackedBar100:
ColumnChart.Update(sender, property, newValue, isAXisChanged);
break;
case RenderAs.Pie:
//renderedCanvas = PieChart.GetVisualObjectForPieChart(width, height, plotDetails, dataSeriesList4Rendering, chart, animationEnabled);
break;
case RenderAs.Doughnut:
//renderedCanvas = PieChart.GetVisualObjectForDoughnutChart(width, height, plotDetails, dataSeriesList4Rendering, chart, animationEnabled);
break;
case RenderAs.StackedArea:
List<DataSeries> stackedAreaList = (from ds in chart.Series where ds.RenderAs == RenderAs.StackedArea select ds).ToList();
if (stackedAreaList.Count > 0)
ColumnChart.Update(chart, stackedAreaList[0].RenderAs, stackedAreaList);
chart.ChartArea.AttachEventsToolTipHref2DataSeries();
break;
case RenderAs.StackedArea100:
List<DataSeries> stackedArea100List = (from ds in chart.Series where ds.RenderAs == RenderAs.StackedArea select ds).ToList();
if (stackedArea100List.Count > 0)
ColumnChart.Update(chart, stackedArea100List[0].RenderAs, stackedArea100List);
chart.ChartArea.AttachEventsToolTipHref2DataSeries();
break;
case RenderAs.SectionFunnel:
case RenderAs.StreamLineFunnel:
case RenderAs.Pyramid:
//renderedCanvas = FunnelChart.GetVisualObjectForFunnelChart(width, height, plotDetails, dataSeriesList4Rendering, chart, animationEnabled, true);
break;
case RenderAs.Stock:
StockChart.Update(sender, property, newValue, isAXisChanged);
break;
case RenderAs.CandleStick:
CandleStick.Update(sender, property, newValue, isAXisChanged);
break;
}
//chart.ChartArea.AttachScrollEvents();
}
internal static void UpdateVisualObject(RenderAs chartType, Visifire.Commons.ObservableObject sender, VcProperties property, object newValue, Boolean isAXisChanged)
{
Boolean isDataPoint = sender.GetType().Equals(typeof(DataPoint));
DataPoint dataPoint = sender as DataPoint;
Chart chart = (sender as ObservableObject).Chart as Chart;
switch (chartType)
{
case RenderAs.Column:
case RenderAs.Bar:
ColumnChart.Update(sender, property, newValue, isAXisChanged);
//ColumnChart.GetVisualObjectForColumnChart(width, height, plotDetails, dataSeriesList4Rendering, chart, plankDepth, animationEnabled);
break;
// renderedCanvas = BarChart.GetVisualObjectForBarChart(width, height, plotDetails, dataSeriesList4Rendering, chart, plankDepth, animationEnabled);
case RenderAs.Line:
//if (isAXisChanged && isDataPoint && chart._partialUpdateAnimation)
//{ foreach (DataSeries ds in chart.Series)
// {
// //if (ds == dataPoint.Parent)
// // continue;
// foreach (DataPoint dp in ds.DataPoints)
// {
// RenderHelper.UpdateVisualObject(ds.RenderAs, dp, property, newValue, false);
// }
// }
//}
//else
// LineChart.Update(sender, property, newValue);
LineChart.Update(sender, property, newValue, isAXisChanged);
break;
case RenderAs.Point:
PointChart.Update(sender, property, newValue, isAXisChanged);
//renderedCanvas = PointChart.GetVisualObjectForPointChart(width, height, plotDetails, dataSeriesList4Rendering, chart, plankDepth, animationEnabled);
break;
case RenderAs.Bubble:
BubbleChart.Update(sender, property, newValue, isAXisChanged);
//renderedCanvas = BubbleChart.GetVisualObjectForBubbleChart(width, height, plotDetails, dataSeriesList4Rendering, chart, plankDepth, animationEnabled);
break;
case RenderAs.Area:
AreaChart.Update(sender, property, newValue, isAXisChanged);
//renderedCanvas = AreaChart.GetVisualObjectForAreaChart(width, height, plotDetails, dataSeriesList4Rendering, chart, plankDepth, animationEnabled);
break;
case RenderAs.StackedColumn:
ColumnChart.Update(sender, property, newValue, isAXisChanged);
//renderedCanvas = ColumnChart.GetVisualObjectForStackedColumnChart(width, height, plotDetails, chart, plankDepth, animationEnabled);
break;
case RenderAs.StackedColumn100:
ColumnChart.Update(sender, property, newValue, isAXisChanged);
// renderedCanvas = ColumnChart.GetVisualObjectForStackedColumn100Chart(width, height, plotDetails, chart, plankDepth, animationEnabled);
break;
case RenderAs.StackedBar:
ColumnChart.Update(sender, property, newValue, isAXisChanged);
//renderedCanvas = BarChart.GetVisualObjectForStackedBarChart(width, height, plotDetails, chart, plankDepth, animationEnabled);
break;
case RenderAs.StackedBar100:
ColumnChart.Update(sender, property, newValue, isAXisChanged);
//renderedCanvas = BarChart.GetVisualObjectForStackedBar100Chart(width, height, plotDetails, chart, plankDepth, animationEnabled);
break;
case RenderAs.Pie:
//renderedCanvas = PieChart.GetVisualObjectForPieChart(width, height, plotDetails, dataSeriesList4Rendering, chart, animationEnabled);
break;
case RenderAs.Doughnut:
//renderedCanvas = PieChart.GetVisualObjectForDoughnutChart(width, height, plotDetails, dataSeriesList4Rendering, chart, animationEnabled);
break;
case RenderAs.StackedArea:
//renderedCanvas = AreaChart.GetVisualObjectForStackedAreaChart(width, height, plotDetails, dataSeriesList4Rendering, chart, plankDepth, animationEnabled);
break;
case RenderAs.StackedArea100:
//renderedCanvas = AreaChart.GetVisualObjectForStackedArea100Chart(width, height, plotDetails, dataSeriesList4Rendering, chart, plankDepth, animationEnabled);
break;
case RenderAs.SectionFunnel:
//renderedCanvas = FunnelChart.GetVisualObjectForFunnelChart(width, height, plotDetails, dataSeriesList4Rendering, chart, animationEnabled, false);
break;
case RenderAs.StreamLineFunnel:
//renderedCanvas = FunnelChart.GetVisualObjectForFunnelChart(width, height, plotDetails, dataSeriesList4Rendering, chart, animationEnabled, true);
break;
case RenderAs.Stock:
StockChart.Update(sender, property, newValue, isAXisChanged);
//renderedCanvas = StockChart.GetVisualObjectForStockChart(width, height, plotDetails, dataSeriesList4Rendering, chart, plankDepth, animationEnabled);
break;
case RenderAs.CandleStick:
CandleStick.Update(sender, property, newValue, isAXisChanged);
//renderedCanvas = CandleStick.GetVisualObjectForCandleStick(width, height, plotDetails, dataSeriesList4Rendering, chart, plankDepth, animationEnabled);
break;
}
chart.ChartArea.AttachScrollEvents();
}
/*
public static ScrollViewer CreateScrollViewerFromXAML(Double scrollBarSize)
{
StringBuilder xaml = new StringBuilder();
xaml.Append("<ScrollViewer xmlns=\"http://schemas.microsoft.com/winfx/2006/xaml/presentation\">");
xaml.Append("<ScrollViewer.Template>");
xaml.Append("<ControlTemplate TargetType=\"ScrollViewer\">");
xaml.Append("<Border BorderBrush=\"{TemplateBinding BorderBrush}\" BorderThickness=\"{TemplateBinding BorderThickness}\" CornerRadius=\"2\">");
xaml.Append("<Grid Background=\"{TemplateBinding Background}\">");
xaml.Append("<Grid.ColumnDefinitions>");
xaml.Append("<ColumnDefinition Width=\"*\"/>");
xaml.Append("<ColumnDefinition Width=\"Auto\"/>");
xaml.Append("</Grid.ColumnDefinitions>");
xaml.Append("<Grid.RowDefinitions>");
xaml.Append("<RowDefinition Height=\"*\"/>");
xaml.Append("<RowDefinition Height=\"Auto\"/>");
xaml.Append("</Grid.RowDefinitions>");
xaml.Append("<ScrollContentPresenter x:Name=\"ScrollContentPresenter\" Cursor=\"{TemplateBinding Cursor}\" Margin=\"{TemplateBinding Padding}\" ContentTemplate=\"{TemplateBinding ContentTemplate}\"/>");
xaml.Append("<Rectangle Fill=\"#FFE9EEF4\" Grid.Column=\"1\" Grid.Row=\"1\"/>");
xaml.Append("<ScrollBar x:Name=\"VerticalScrollBar\" Margin=\"0,-1,-1,-1\" Width=\"18\" Visibility=\"{TemplateBinding ComputedVerticalScrollBarVisibility}\" IsTabStop=\"False\" Grid.Column=\"1\" Grid.Row=\"0\" Maximum=\"{TemplateBinding ScrollableHeight}\" Minimum=\"0\" Value=\"{TemplateBinding VerticalOffset}\" Orientation=\"Vertical\" ViewportSize=\"{TemplateBinding ViewportHeight}\"/>");
xaml.Append("<ScrollBar x:Name=\"HorizontalScrollBar\" Height=\"18\" Margin=\"-1,0,-1,-1\" Visibility=\"{TemplateBinding ComputedHorizontalScrollBarVisibility}\" IsTabStop=\"False\" Grid.Column=\"0\" Grid.Row=\"1\" Maximum=\"{TemplateBinding ScrollableWidth}\" Minimum=\"0\" Value=\"{TemplateBinding HorizontalOffset}\" Orientation=\"Horizontal\" ViewportSize=\"{TemplateBinding ViewportWidth}\"/>");
xaml.Append("</Grid>");
xaml.Append("</Border>");
xaml.Append("</ControlTemplate>");
xaml.Append("</ScrollViewer.Template>");
xaml.Append("</ScrollViewer>");
#if SL
return (ScrollViewer) System.Windows.Markup.XamlReader.Load(xaml.ToString());
#else
return (ScrollViewer)XamlReader.Load(new XmlTextReader(new System.IO.StringReader(xaml.ToString())));
#endif
}
*/
#if SL
/// <summary>
/// Get image MemoryStream from WriteableBitmap
/// </summary>
/// <param name="bitmap">WriteableBitmap</param>
/// <returns>MemoryStream</returns>
public static System.IO.MemoryStream GetImageStream(WriteableBitmap bitmap, Visifire.Charts.ExportType exportTypes)
{
byte[][,] raster = ReadRasterInformation(bitmap);
if (exportTypes == ExportType.Jpg)
{
return EncodeRasterInformationToStream(raster, ColorSpace.RGB);
}
else
{
int width = bitmap.PixelWidth;
int height = bitmap.PixelHeight;
System.IO.MemoryStream ms = new System.IO.MemoryStream();
// http://en.wikipedia.org/wiki/BMP_file_format
#region BMP File Header(14 bytes)
// Magic number(2 bytes):BM
ms.WriteByte(0x42); ms.WriteByte(0x4D);
// Size of the BMP file in bytes(4 bytes)
long len = bitmap.Pixels.Length * 4 + 0x36;
ms.WriteByte((byte)len);
ms.WriteByte((byte)(len >> 8));
ms.WriteByte((byte)(len >> 16));
ms.WriteByte((byte)(len >> 24));
// Reserved(2 bytes)
ms.WriteByte(0x00); ms.WriteByte(0x00);
// Reserved(2 bytes)
ms.WriteByte(0x00); ms.WriteByte(0x00);
// Offset(4 bytes)
ms.WriteByte(0x36); ms.WriteByte(0x00); ms.WriteByte(0x00); ms.WriteByte(0x00);
#endregion
// http://en.wikipedia.org/wiki/BMP_file_format
#region Bitmap Information(40 bytes:Windows V3)
// Size of this header(4 bytes)
ms.WriteByte(0x28); ms.WriteByte(0x00); ms.WriteByte(0x00); ms.WriteByte(0x00);
// Bitmap width in pixels(4 bytes)
ms.WriteByte((byte)width); ms.WriteByte((byte)(width >> 8)); ms.WriteByte((byte)(width >> 16));
ms.WriteByte((byte)(width >> 24));
// Bitmap height in pixels(4 bytes)
ms.WriteByte((byte)height); ms.WriteByte((byte)(height >> 8)); ms.WriteByte((byte)(height >> 16)); ms.WriteByte((byte)(height >> 24));
// Bumber of color planes(2 bytes)
ms.WriteByte(0x01); ms.WriteByte(0x00);
// Number of bits per pixel(2 bytes)
ms.WriteByte(0x20); ms.WriteByte(0x00);
// Compression method(4 bytes)
ms.WriteByte(0x00); ms.WriteByte(0x00); ms.WriteByte(0x00); ms.WriteByte(0x00);
// Image size(4 bytes)
ms.WriteByte(0x00); ms.WriteByte(0x00); ms.WriteByte(0x00); ms.WriteByte(0x00);
// Horizontal resolution of the image(4 bytes)
ms.WriteByte(0x00); ms.WriteByte(0x00); ms.WriteByte(0x00); ms.WriteByte(0x00);
// Vertical resolution of the image(4 bytes)
ms.WriteByte(0x00); ms.WriteByte(0x00); ms.WriteByte(0x00); ms.WriteByte(0x00);
// Number of colors in the color palette(4 bytes)
ms.WriteByte(0x00); ms.WriteByte(0x00); ms.WriteByte(0x00); ms.WriteByte(0x00);
// Number of important colors(4 bytes)
ms.WriteByte(0x00); ms.WriteByte(0x00); ms.WriteByte(0x00); ms.WriteByte(0x00);
#endregion
// Write Bitmap data
for (int columnId = height - 1; columnId >= 0; columnId--)
{
for (int rowId = 0; rowId < width; rowId++)
{
int pixel = bitmap.Pixels[width * columnId + rowId];
ms.WriteByte((byte)(pixel & 0xff)); //B
ms.WriteByte((byte)((pixel >> 8) & 0xff)); //G
ms.WriteByte((byte)((pixel >> 0x10) & 0xff)); //R
ms.WriteByte(0x00); //reserved
}
}
return new System.IO.MemoryStream(ms.GetBuffer(), true);
}
}