public static byte[] SaveInkCanvasToJpg(InkCanvas canvas, int quality)
{
canvas.UpdateLayout();
Size sizet = new Size();
canvas.Arrange(new Rect(sizet));
Size size = new Size(canvas.ActualWidth, canvas.ActualHeight);
canvas.Margin = new Thickness(0, 0, 0, 0);
canvas.Measure(size);
canvas.Arrange(new Rect(size));
JpegBitmapEncoder encoder = new JpegBitmapEncoder();
encoder.QualityLevel = quality;
RenderTargetBitmap bitmapTarget = new RenderTargetBitmap((int)size.Width, (int)size.Height, 96, 96, PixelFormats.Default);
bitmapTarget.Render(canvas);
encoder.Frames.Add(BitmapFrame.Create(bitmapTarget));
MemoryStream ms = new MemoryStream();
encoder.Save(ms);
return(ms.ToArray());
}
private static FormatConvertedBitmap ConvertToGrayScaleBitmap(InkCanvas surface)
{
var transform = surface.LayoutTransform;
surface.LayoutTransform = null;
var size = new Size(surface.Width, surface.Height);
surface.Measure(size);
surface.Arrange(new Rect(size));
var renderBitmap = new RenderTargetBitmap(28, 28, 96d, 96d, PixelFormats.Pbgra32);
var visual = new DrawingVisual();
using (var context = visual.RenderOpen())
{
var brush = new VisualBrush(surface);
context.DrawRectangle(brush,
null,
new Rect(new Point(), new Size(surface.Width, surface.Height)));
}
visual.Transform = new ScaleTransform(28 / surface.ActualWidth, 28 / surface.ActualHeight);
renderBitmap.Render(visual);
var bitmapGreyscale = new FormatConvertedBitmap(renderBitmap, PixelFormats.Gray8, BitmapPalettes.Gray256, 0.0);
surface.LayoutTransform = transform;
return(bitmapGreyscale);
}
public void saveCanvas(object sender, RoutedEventArgs e)
{
this.save_filename = this.save_filename ?? this.getSaveFilename();
if (save_filename != null)
{
var cantwo = new InkCanvas();
cantwo.Strokes.Clear();
cantwo.Strokes.Add(this.canvas.Strokes);
cantwo.Background = this.canvas.Background;
var size = new Size(this.canvas.ActualWidth, this.canvas.ActualHeight);
cantwo.Height = size.Height;
cantwo.Width = size.Width;
cantwo.Measure(size);
cantwo.Arrange(new Rect(size));
var transform = this.canvas.LayoutTransform;
var rtb = new RenderTargetBitmap((int)this.canvas.ActualWidth, (int)this.canvas.ActualHeight, dpiX, dpiY, PixelFormats.Default);
rtb.Render(cantwo);
try {
using (var fs = File.Open(this.save_filename, FileMode.Create)){
var encoder = new JpegBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(rtb));
encoder.Save(fs);
}
}
catch (IOException) {
MessageBox.Show("Failed to save image", "ERROR: Save Failed");
}
// Restore transformation if there was one.
this.canvas.LayoutTransform = transform;
}
}
// Canvas を画像ファイルとして保存する。
public static RenderTargetBitmap toImage(this InkCanvas canvas, string path, BitmapEncoder encoder = null)
{
// レイアウトを再計算させる
var size = new Size(canvas.Width, canvas.Height);
canvas.Measure(size);
canvas.Arrange(new Rect(size));
// VisualObjectをBitmapに変換する
var renderBitmap = new RenderTargetBitmap((int)size.Width, // 画像の幅
(int)size.Height, // 画像の高さ
96.0d, // 横96.0DPI
96.0d, // 縦96.0DPI
PixelFormats.Pbgra32); // 32bit(RGBA各8bit)
renderBitmap.Render(canvas);
// 出力用の FileStream を作成する
using (var os = new FileStream(path, FileMode.Create))
{
// 変換したBitmapをエンコードしてFileStreamに保存する。
// BitmapEncoder が指定されなかった場合は、PNG形式とする。
encoder = encoder ?? new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(renderBitmap));
encoder.Save(os);
}
return(renderBitmap);
}
public static void ExportToPng(string path, InkCanvas canvas)
{
if (path == null)
{
return;
}
var size = new Size(canvas.ActualWidth, canvas.ActualWidth);
// Measure the canvas
canvas.Measure(size);
// Create a render bitmap and push the canvas to it
var renderBitmap = new RenderTargetBitmap((int)size.Width, (int)size.Height, 96d, 96d, PixelFormats.Pbgra32);
renderBitmap.Render(canvas);
// Create a file stream for saving image
using (var outStream = new FileStream(path, FileMode.Create))
{
// Use png encoder for our data
var encoder = new PngBitmapEncoder();
// push the rendered bitmap to it
encoder.Frames.Add(BitmapFrame.Create(renderBitmap));
// save the data to the stream
encoder.Save(outStream);
}
}
public static void SaveCanvas(Window window, InkCanvas canvas, int dpi, string filename)
{
Size availableSize = new Size(window.Width + 100.0, window.Height);
canvas.Measure(availableSize);
RenderTargetBitmap renderTargetBitmap = new RenderTargetBitmap((int)window.Width, (int)window.Height - 200, dpi, dpi, PixelFormats.Pbgra32);
renderTargetBitmap.Render(canvas);
SaveRTBAsPNG(renderTargetBitmap, filename);
}
RenderTargetBitmap CanvasToBitmap()
{
Size size = new Size(MyCanvas.ActualWidth, MyCanvas.ActualHeight);
MyCanvas.Measure(size);
Rect rect = new Rect(size); // Получаем ширину и высоту нашего будущего изображения(квадрата)
MyCanvas.Arrange(rect);
int dpi = 96;
RenderTargetBitmap rtb = new RenderTargetBitmap((int)size.Width, (int)size.Height, dpi, dpi, System.Windows.Media.PixelFormats.Default); // через обьект класса RenderTargetBitmap будем преобразовывать canvas в растровое изображение
rtb.Render(MyCanvas);
return(rtb);
}
public static void ExportToPng(Uri path, InkCanvas Surface)
{
if (path == null)
{
return;
}
// Save current canvas transform
Transform transform = Surface.LayoutTransform;
// reset current transform (in case it is scaled or rotated)
Surface.LayoutTransform = null;
// Get the size of canvas
Size size = new Size(Surface.ActualWidth, Surface.ActualHeight);
// Measure and arrange the surface
// VERY IMPORTANT
Surface.Measure(size);
Surface.Arrange(new Rect(size));
// Create a render bitmap and push the surface to it
RenderTargetBitmap renderBitmap =
new RenderTargetBitmap(
(int)size.Width,
(int)size.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
Surface.LayoutTransform = transform;
}
public static void SaveCanvas(UserControl window, InkCanvas canvas, int dpi, string filename)
{
Size size = new Size(window.Width, window.Height);
canvas.Measure(size);
//canvas.Arrange(new Rect(size));
var rtb = new RenderTargetBitmap(
(int)window.Width, //width
(int)window.Height, //height
dpi, //dpi x
dpi, //dpi y
PixelFormats.Pbgra32 // pixelformat
);
rtb.Render(canvas);
SaveRTBAsPNG(rtb, filename);
}
public void EskportDoJPEG(InkCanvas obszar)
{
double
x1 = obszar.Margin.Left,
x2 = obszar.Margin.Top,
x3 = obszar.Margin.Right,
x4 = obszar.Margin.Bottom;
obszar.Margin = new Thickness(0, 0, 0, 0);
Size size = new Size(FormWidth() + 150, FormHeight() + 150);
//Size size = new Size(obszar.Width, obszar.Height);
obszar.Measure(size);
obszar.Arrange(new Rect(size));
RenderTargetBitmap renderBitmap =
new RenderTargetBitmap(
(int)size.Width,
(int)size.Height,
96,
96,
PixelFormats.Default);
renderBitmap.Render(obszar);
otworzOknoDialogoZapisz();
try
{
using (FileStream fs = File.Open(nazwaPliku, FileMode.Create))
{
JpegBitmapEncoder encoder = new JpegBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(renderBitmap));
encoder.Save(fs);
}
obszar.Margin = new Thickness(x1, x2, x3, x4);
}
catch (Exception e)
{
}
}
public void ExportToJpeg(String path, InkCanvas surface)
{
double
x1 = surface.Margin.Left,
x2 = surface.Margin.Top,
x3 = surface.Margin.Right,
x4 = surface.Margin.Bottom;
if (path == null)
{
return;
}
surface.Margin = new Thickness(0, 0, 0, 0);
System.Windows.Size size = new System.Windows.Size(surface.Width, surface.Height);
surface.Measure(size);
surface.Arrange(new Rect(size));
RenderTargetBitmap renderBitmap =
new RenderTargetBitmap(
(int)size.Width,
(int)size.Height,
96,
96,
PixelFormats.Default);
renderBitmap.Render(surface);
using (FileStream fs = File.Open(path, FileMode.Create))
{
PngBitmapEncoder encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(renderBitmap));
encoder.Save(fs);
}
surface.Margin = new Thickness(x1, x2, x3, x4);
}
internal FileStream CreatePNG(InkCanvas canvas, int resolution)
{
Transform transform = canvas.LayoutTransform;
canvas.LayoutTransform = null;
Size size = new Size(canvas.ActualWidth, canvas.ActualHeight);
canvas.Measure(size);
canvas.Arrange(new Rect(size));
int resolutionScaleFactor = resolution / 96;
RenderTargetBitmap renderBitmap =
new RenderTargetBitmap(
resolutionScaleFactor * ((int)size.Width + 1),
resolutionScaleFactor * ((int)size.Height + 1),
resolutionScaleFactor * 96d,
resolutionScaleFactor * 96d,
PixelFormats.Default
);
renderBitmap.Render(canvas);
FileStream outStream = new FileStream(@"tester", FileMode.Create);
PngBitmapEncoder encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(renderBitmap));
encoder.Save(outStream);
outStream.Position = 0;
canvas.LayoutTransform = transform;
return(outStream);
}
internal BitmapSource GetBitmap(Orientation?orientation)
{
InkCanvas inkCanvas = new InkCanvas
{
Background = System.Windows.Media.Brushes.White
};
if (this.StrokeData != null)
{
using (MemoryStream memoryStream = new MemoryStream())
{
memoryStream.Write(this.StrokeData, 0, this.StrokeData.Length);
memoryStream.Seek(0, SeekOrigin.Begin);
StrokeCollection collection = new StrokeCollection(memoryStream);
inkCanvas.Strokes = collection;
}
}
foreach (Stroke stroke in inkCanvas.Strokes)
{
stroke.DrawingAttributes.Color = stroke.DrawingAttributes.Color == Colors.White ? Colors.Black : stroke.DrawingAttributes.Color == Colors.LightGray ? Colors.Black : stroke.DrawingAttributes.Color;
}
System.Windows.Point bottomRightCorner = new System.Windows.Point(1, 1);
foreach (Stroke stroke in inkCanvas.Strokes)
{
Rect bounds = stroke.GetBounds();
if (bounds.Right > bottomRightCorner.X)
{
bottomRightCorner.X = bounds.Right + 1;
}
if (bounds.Bottom > bottomRightCorner.Y)
{
bottomRightCorner.Y = bounds.Bottom + 1;
}
}
double scale = 3;
inkCanvas.Width = bottomRightCorner.X * scale;
inkCanvas.Height = bottomRightCorner.Y * scale;
inkCanvas.Measure(inkCanvas.RenderSize);
inkCanvas.Arrange(new Rect(0, 0, bottomRightCorner.X, bottomRightCorner.Y));
inkCanvas.UpdateLayout();
RenderTargetBitmap bitmap = new RenderTargetBitmap(
(int)inkCanvas.RenderSize.Width,
(int)inkCanvas.RenderSize.Height,
96 * scale,
96 * scale,
PixelFormats.Pbgra32);
bitmap.Render(inkCanvas);
bitmap.Freeze();
if (bottomRightCorner.X > bottomRightCorner.Y && orientation.GetValueOrDefault(Orientation.Horizontal) == Orientation.Vertical ||
bottomRightCorner.Y > bottomRightCorner.X && orientation.GetValueOrDefault(Orientation.Horizontal) == Orientation.Horizontal)
{
return(new TransformedBitmap(bitmap, new RotateTransform(90)));
}
return(bitmap);
}
