private void buttonLoadTemplate_Click(object sender, RoutedEventArgs e)
{
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.FileName = "MyWatermarks";
dlg.DefaultExt = ".xml";
dlg.Filter = "Watermark templates (.xml)|*.xml";
Nullable <bool> result = dlg.ShowDialog();
if (result == true)
{
string path = dlg.FileName;
XmlSerializer reader = new XmlSerializer(typeof(TextWatermarkSerializationHelper[]));
TextWatermarkSerializationHelper[] th = null;
try
{
System.IO.StreamReader file = new System.IO.StreamReader(path);
th = (TextWatermarkSerializationHelper[])reader.Deserialize(file);
}
catch (Exception)
{ }
if (th != null)
{
RemoveAllAdornersFromLabelWatermarks();
textWatermarks = new TextWatermarkListWithSerchByUiLabel();
foreach (TextWatermarkSerializationHelper h in th)
{
System.Drawing.Color c = System.Drawing.Color.FromArgb(h.colorArgb);
TextWatermark t = new TextWatermark(h.text,
new System.Windows.Media.FontFamily(h.fontFamilyName),
System.Windows.Media.Color.FromArgb(c.A, c.R, c.G, c.B),
h.height,
h.angle,
h.opacity,
h.x,
h.y);
t.UiLabelOnImageInCanvas.MouseLeftButtonDown += WatermarkLabelOnCanvasTouched;
t.UiLabelOnImageInCanvas.Cursor = Cursors.Hand;
t.SetLabelGeometryAccordingToImageAndCanvas(imagePreview.Width, imagePreview.Height, canvasMain.ActualWidth, canvasMain.ActualHeight);
canvasMain.Children.Add(t.UiLabelOnImageInCanvas);
textWatermarks.Add(t);
}
AddAdornerToWatermarkLabel(textWatermarks[textWatermarks.Count - 1]);
tabItemTextWatermarks.DataContext = textWatermarks[textWatermarks.Count - 1];
}
}
}
private static RenderTargetBitmap CreateWatermarkedBitmapEncoder(BitmapImage SourceImage, TextWatermarkListWithSerchByUiLabel Watermarks, int newPixelWidth, int newPixelHeight)
{
DrawingVisual visual = new DrawingVisual();
//resize koefficient
double kw = 1;
if (SourceImage.PixelWidth > 0)
{
kw = (double)newPixelWidth / SourceImage.PixelWidth;
}
double kh = 1;
if (SourceImage.PixelHeight > 0)
{
kh = (double)newPixelHeight / SourceImage.PixelHeight;
}
using (DrawingContext dc = visual.RenderOpen())
{
dc.DrawImage(SourceImage, new Rect(0, 0, SourceImage.PixelWidth, SourceImage.PixelHeight));
foreach (Watermark w in Watermarks)
{
//rotate drawing context
RotateTransform rt = new RotateTransform();
rt.Angle = w.angle;
rt.CenterX = 0;
rt.CenterY = 0;
dc.PushTransform(rt);
//dc.PushOpacity(w.opacity);
double op = 1 - w.opacity / 100.0;
dc.PushOpacity(op);
TextWatermark tw = (TextWatermark)w;
int x, y;
double sin, cos;
sin = Math.Sin(w.angle * Math.PI / 180.0);
cos = Math.Cos(w.angle * Math.PI / 180.0);
x = Convert.ToInt16(tw.GetPixelXlocation(SourceImage.PixelWidth) * cos + tw.GetPixelYlocation(SourceImage.PixelHeight) * sin);
y = Convert.ToInt16(-tw.GetPixelXlocation(SourceImage.PixelWidth) * sin + tw.GetPixelYlocation(SourceImage.PixelHeight) * cos);
dc.DrawText(tw.GetFormattedText(SourceImage.PixelWidth, SourceImage.PixelHeight), new Point(x, y));
dc.Pop(); //pop opacity
dc.Pop(); //pop rotation
}
}
//resize transform
visual.Transform = new ScaleTransform(kw, kh);
RenderTargetBitmap rtb = new RenderTargetBitmap(newPixelWidth, newPixelHeight, 96, 96, PixelFormats.Pbgra32);
rtb.Render(visual);
return(rtb);
}
public static bool WatermarkScaleAndSaveImageFromBitmapImage(ImageFiletypes fileFormat, BitmapImage sourceImage, int newPixelWidth, int newPixelHight, TextWatermarkListWithSerchByUiLabel watermarks, string saveDirectoryPath, string fileNameWithoutExtensionAndPath)
{
RenderTargetBitmap rtb = CreateWatermarkedBitmapEncoder(sourceImage, watermarks, newPixelWidth, newPixelHight);
return(SaveImage(rtb, fileFormat, saveDirectoryPath, fileNameWithoutExtensionAndPath));
}
