private void Initialize()
{
imageView = new ImageView(context);
imageView.SetBackgroundColor(Color.Transparent);
drawingImageView = new ImageView(context);
drawingImageView.SetBackgroundColor(Color.Transparent);
StrokeColor = new Abstractions.Color(0, 0, 0, 1);
StrokeThickness = 1.0;
IWindowManager windowManager = Context.GetSystemService(Context.WindowService).JavaCast <IWindowManager>();
metrics = new DisplayMetrics();
windowManager.DefaultDisplay.GetMetrics(metrics);
AddView(imageView);
AddView(drawingImageView);
}
private void DrawStrokes(Canvas _canvas, List <Abstractions.Stroke> strokes, Bitmap backgroundBitmap, Abstractions.Color backgroundColor, Abstractions.Scaling backgroundScaling, int Width, int Height, float scale)
{
if (backgroundColor != null)
{
_canvas.DrawColor(new Color((byte)(backgroundColor.R * 255f), (byte)(backgroundColor.G * 255f), (byte)(backgroundColor.B * 255f)), PorterDuff.Mode.Src);
}
float deviceOrientation = 0;//TODO
//TODO check the replacement for canvas.Save
_canvas.Save(SaveFlags.Matrix);
_canvas.Translate(_canvas.Width / 2f, _canvas.Height / 2f);
_canvas.Rotate(deviceOrientation);
_canvas.Translate(-(_canvas.Width / 2f), -(_canvas.Height / 2f));
if (backgroundBitmap != null)
{
switch (backgroundScaling)
{
case Abstractions.Scaling.Absolute_None:
case Abstractions.Scaling.Relative_None:
_canvas.DrawBitmap(backgroundBitmap, 0, 0, new Paint());
break;
case Abstractions.Scaling.Absolute_Fit:
case Abstractions.Scaling.Relative_Fit:
float backgroundScale = GetDrawingScale(backgroundScaling, backgroundBitmap, Width, Height);
_canvas.DrawBitmap(backgroundBitmap, new Rect(0, 0, backgroundBitmap.Width, backgroundBitmap.Height), new Rect(0, 0, (int)(backgroundBitmap.Width * backgroundScale), (int)(backgroundBitmap.Height * backgroundScale)), new Paint());
break;
case Abstractions.Scaling.Absolute_Fill:
case Abstractions.Scaling.Relative_Fill:
_canvas.DrawBitmap(backgroundBitmap, new Rect(0, 0, backgroundBitmap.Width, backgroundBitmap.Height), new Rect(0, 0, Width, Height), new Paint());
break;
}
}
foreach (var stroke in strokes)
{
var paint = CreatePaint(stroke.StrokeColor.R, stroke.StrokeColor.G, stroke.StrokeColor.B, stroke.StrokeColor.A, stroke.Thickness, metrics.Density);
var path = new Android.Graphics.Path();
path.MoveTo((float)stroke.Points[0].X * scale, (float)stroke.Points[0].Y * scale);
foreach (var p in stroke.Points)
{
path.LineTo((float)p.X * scale, (float)p.Y * scale);
}
_canvas.DrawPath(path, paint);
}
}
public Task <byte[]> GetCurrentImageAsPNG(int width, int height, float scale, List <Stroke> strokes, Scaling scaling = Scaling.Relative_None, int quality = 80, Abstractions.Color BackgroundColor = null, bool useDevicePixelDensity = false, byte[] BackgroundImage = null)
{
return(nativePainter.GetCurrentImageAsPNG(width, height, scale, strokes, scaling, quality, BackgroundColor, useDevicePixelDensity, BackgroundImage));
}
public Task <byte[]> ExportCurrentImage(int width, int height, float scale, List <Stroke> strokes, Scaling scaling, ExportFormat format, int quality, Abstractions.Color BackgroundColor, bool useDevicePixelDensity, byte[] BackgroundImage = null)
{
return(nativePainter.ExportCurrentImage(width, height, scale, strokes, scaling, format, quality, BackgroundColor, useDevicePixelDensity, BackgroundImage));
}