/// <summary>
/// Set a new visual
/// </summary>
public void SetNewGraphicVisual(GraphicVisual visual, GraphicColorPrecision?colorPrecision = null)
{
if (visual == null)
{
ColorPrecisionMessage = null;
Preview = null;
return;
}
ColorPrecisionMessage = CommonViews.Helper.GetColorPrecisionText(colorPrecision);
Preview = DrawingBrushBinaryGenerator.Generate(visual);
}
public static void ExportImage(GraphicVisual visual, int width, bool addMargin, string filename)
{
// https://stackoverflow.com/questions/9080231/how-to-save-geometry-as-image
var fileExtension = Path.GetExtension(filename).ToLower();
var hasTransparentBackground = fileExtension == ".png";
try
{
var normalizer = new NormalizeVisual();
var paths = normalizer.Normalize(visual, NormalizeAspect.Width, width);
double height = normalizer.AspectRatio * width;
var drawingBrush = DrawingBrushBinaryGenerator.Generate(paths);
double margin = 0;
if (addMargin)
{
margin = (width > height ? width : height) / 20.0;
}
double imageWidth = width + 2 * margin;
double imageHeight = Math.Ceiling(height + 2 * margin);
DrawingVisual viz = new DrawingVisual();
using (DrawingContext dc = viz.RenderOpen())
{
if (!hasTransparentBackground)
{
dc.DrawRectangle(Brushes.White, null, new Rect(0, 0, imageWidth, imageHeight));
}
dc.DrawRectangle(drawingBrush, null, new Rect(margin, margin, width, height));
}
RenderTargetBitmap bmp =
new RenderTargetBitmap((int)imageWidth, (int)imageHeight, // Size
96, 96, // DPI
PixelFormats.Pbgra32);
bmp.Render(viz);
BitmapEncoder encoder = null;
switch (fileExtension)
{
case ".png":
encoder = new PngBitmapEncoder();
break;
case ".jpg":
encoder = new JpegBitmapEncoder();
break;
case ".tiff":
encoder = new TiffBitmapEncoder();
break;
case ".bmp":
encoder = new BmpBitmapEncoder();
break;
case ".gif":
encoder = new GifBitmapEncoder();
break;
}
encoder.Frames.Add(BitmapFrame.Create(bmp));
using (FileStream file = new FileStream(filename, FileMode.Create))
{
encoder.Save(file);
}
}
catch
{
}
}
/// <summary>
/// Export to an .ICO format
/// </summary>
public static void ExportIco(GraphicVisual visual, string filename)
{
try
{
int[] resolutions = { 16, 32, 64, 128, 256 };
FileStream file = new FileStream(filename, FileMode.Create);
BinaryWriter binWriter = new BinaryWriter(file);
List <long> offsets = new List <long>();
// icon dir
// must be 0
Int16 int16 = 0;
binWriter.Write(int16);
// type
int16 = 1;
binWriter.Write(int16);
// # of images
int16 = (Int16)resolutions.Length;
binWriter.Write(int16);
// ICONDIRENTRY
foreach (var resolution in resolutions)
{
// width
byte int8 = (byte)(resolution == 256 ? 0 : resolution);
binWriter.Write(int8);
// height
binWriter.Write(int8);
// # colors in palette
int8 = 0;
binWriter.Write(int8);
// reserved => 0
binWriter.Write(int8);
// # color planes
int16 = 1;
binWriter.Write(int16);
// # bit per pixel
int16 = 0;
binWriter.Write(int16);
offsets.Add(file.Position);
UInt32 uint32 = 0;
// size of the image
binWriter.Write(uint32);
// offset of the image in file
binWriter.Write(uint32);
}
int resIndex = 0;
foreach (var resolution in resolutions)
{
var startPosition = file.Position;
var normalizer = new NormalizeVisual();
var normalizedVisual = normalizer.Normalize(visual, NormalizeAspect.Both, resolution);
double height = normalizer.AspectRatio * resolution;
var drawingBrush = DrawingBrushBinaryGenerator.Generate(normalizedVisual);
DrawingVisual viz = new DrawingVisual();
using (DrawingContext dc = viz.RenderOpen())
{
dc.DrawRectangle(drawingBrush, null, new Rect(0, 0, resolution, resolution));
}
RenderTargetBitmap bmp =
new RenderTargetBitmap((int)resolution, (int)resolution, // Size
96, 96, // DPI
PixelFormats.Pbgra32);
bmp.Render(viz);
BitmapEncoder encoder = null;
encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(bmp));
encoder.Save(file);
var currentPosition = file.Position;
var size = currentPosition - startPosition;
file.Position = offsets[resIndex];
// patch size
var uint32 = (UInt32)size;
binWriter.Write(uint32);
// patch offset of the image
uint32 = (UInt32)startPosition;
binWriter.Write(uint32);
// set position back to the end
file.Position = currentPosition;
resIndex++;
}
file.Close();
file.Dispose();
}
catch
{
}
}
/// <summary>
/// Update all views with the new selection
/// </summary>
private void UpdateAll()
{
if (selectionChangedFromCode || PathSelectionBox == null || StreamCode == null || DrawingBrushCode == null || Preview == null)
{
return;
}
// get the selected paths
selectedVisual = BuildSelectedDrawing(graphicVisual);
// handle the color warning indicator
if (selectedVisual == null)
{
SetColorWarning("");
Preview.Fill = null;
StreamCode.Text = string.Empty;
DrawingBrushCode.Text = string.Empty;
GeometryCode.Text = string.Empty;
return;
}
GraphicColorPrecision colorPrecision = GetColorPrecision(selectedVisual);
switch (colorPrecision)
{
case GraphicColorPrecision.Precise:
SetColorWarning("");
break;
case GraphicColorPrecision.Estimated:
SetColorWarning("Colors are estimated");
break;
case GraphicColorPrecision.Placeholder:
SetColorWarning("Colors are placeholders");
break;
}
// on request normalize the drawin
GraphicVisual visual = selectedVisual;
if (NormalizeCheckBox.IsChecked == true)
{
var normalizer = new NormalizeVisual();
visual = normalizer.Normalize(selectedVisual, NormalizeAspect.Both, 100);
}
// update the preview
var drawingBrush = DrawingBrushBinaryGenerator.Generate(visual);
Preview.Fill = drawingBrush;
// update the stream source code
UpdateStreamSourceCode();
// update the drawing brush source code
var drawingBrushSource = DrawingBrushSourceGenerator.Generate(visual);
DrawingBrushCode.Text = drawingBrushSource;
// update the geometry source code
UpdateGeometrySourceCode();
ExportMessage.Visibility = Visibility.Collapsed;
}
