public void DrawBitmap(IBitmap bitmap, CanvasPoint point)
{
_canvas?.DrawBitmap((SKBitmap)bitmap.EngineElement, point.ToSKPoint(), new SKPaint()
{
FilterQuality = this.InterpolationMode.ToSKFilterQuality(),
});
}
private SKBitmap CreateAspectCorrectedBitmap(string resourceName, SKRect destRect)
{
// load the bitmap
var sourceBitmap = BitmapExtensions.LoadBitmapResource(this.GetType(), resourceName);
// create a bitmap
SKBitmap aspectFixedBitmap = new SKBitmap
((int)destRect.Width, (int)destRect.Height);
// creaete a canvas for that bitmap
using (SKCanvas aspectBitmapCanvas = new SKCanvas(aspectFixedBitmap))
{
// render the image onto the canvas
aspectBitmapCanvas.DrawBitmap(sourceBitmap, destRect, BitmapStretch.AspectFill);
}
return(aspectFixedBitmap);
}
void OnCanvasViewPaintSurface(object sender, SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
float scale = Math.Min((float)info.Width / bitmap.Width,
(float)info.Height / bitmap.Height);
float x = (info.Width - scale * bitmap.Width) / 2;
float y = (info.Height - scale * bitmap.Height) / 2;
SKRect destRect = new SKRect(x, y, x + scale * bitmap.Width,
y + scale * bitmap.Height);
canvas.DrawBitmap(bitmap, destRect);
}
protected static void SaveBitmap(SKBitmap bmp, string filename = "output.png")
{
using (var bitmap = new SKBitmap(bmp.Width, bmp.Height))
using (var canvas = new SKCanvas(bitmap))
{
canvas.Clear(SKColors.Transparent);
canvas.DrawBitmap(bmp, 0, 0);
canvas.Flush();
using (var stream = File.OpenWrite(Path.Combine(PathToImages, filename)))
using (var image = SKImage.FromBitmap(bitmap))
using (var data = image.Encode())
{
data.SaveTo(stream);
}
}
}
/// <summary>
/// Draws the header logo and text onto the document.
/// </summary>
/// <param name="canvas">The skia canvas to draw to.</param>
private static void DrawHeader(SKCanvas canvas)
{
float imgX = PAGE_WIDTH / 2 - HEADER_ICON_SIZE / 2;
float imgY = MARGIN_TOP;
var logoStream = _assembly.GetManifestResourceStream(_assetsPath + "SQRL_icon_normal_256.png");
logoStream.Seek(0, SeekOrigin.Begin);
canvas.DrawBitmap(SKBitmap.Decode(logoStream),
new SKRect(imgX, imgY, imgX + HEADER_ICON_SIZE, imgY + HEADER_ICON_SIZE));
DrawTextBlock(canvas,
_loc.GetLocalizationValue("SQRLTag"),
imgY + HEADER_ICON_SIZE + 20,
_fontBold, 12, SKColors.Black);
}
protected override void OnDrawSample(SKCanvas canvas, int width, int height)
{
canvas.Clear(SKColors.White);
// load the embedded resource stream
using (var stream = new SKManagedStream(SampleMedia.Images.ColorWheel))
using (var codec = SKCodec.Create(stream))
using (var paint = new SKPaint())
using (var tf = SKTypeface.FromFamilyName("Arial"))
{
var info = codec.Info;
var encodedInfo = codec.EncodedInfo;
paint.IsAntialias = true;
paint.TextSize = 14;
paint.Typeface = tf;
paint.Color = SKColors.Black;
// decode the image
using (var bitmap = new SKBitmap(info.Width, info.Height, info.ColorType, info.IsOpaque ? SKAlphaType.Opaque : SKAlphaType.Premul))
{
IntPtr length;
var result = codec.GetPixels(bitmap.Info, bitmap.GetPixels(out length));
if (result == SKCodecResult.Success || result == SKCodecResult.IncompleteInput)
{
var x = 25;
var y = 25;
canvas.DrawBitmap(bitmap, x, y);
x += bitmap.Info.Width + 25;
y += 14;
canvas.DrawText(string.Format("Result: {0}", result), x, y, paint);
y += 20;
canvas.DrawText(string.Format("Size: {0}px x {1}px", bitmap.Width, bitmap.Height), x, y, paint);
y += 20;
canvas.DrawText(string.Format("Pixels: {0} @ {1}b/px", bitmap.Pixels.Length, bitmap.BytesPerPixel), x, y, paint);
y += 20;
canvas.DrawText(string.Format("Encoding: {0} ({1}) @ {2}-bit color", encodedInfo.Color, encodedInfo.Alpha, encodedInfo.BitsPerComponent), x, y, paint);
}
}
}
}
private static SKBitmap ZoomAndRotate(SKBitmap originalBitmap, double zoom, bool isRotated, float rotation, bool isKeystoned, float keystone)
{
var rotatedAndZoomed = new SKBitmap(originalBitmap.Width, originalBitmap.Height);
using (var tempCanvas = new SKCanvas(rotatedAndZoomed))
{
var zoomedX = originalBitmap.Width * zoom / -2f;
var zoomedY = originalBitmap.Height * zoom / -2f;
var zoomedWidth = originalBitmap.Width * (1 + zoom);
var zoomedHeight = originalBitmap.Height * (1 + zoom);
if (isRotated)
{
tempCanvas.RotateDegrees(rotation, originalBitmap.Width / 2f,
originalBitmap.Height / 2f);
}
tempCanvas.DrawBitmap(
originalBitmap,
SKRect.Create(
(float)zoomedX,
(float)zoomedY,
(float)zoomedWidth,
(float)zoomedHeight
)); // blows up the bitmap, which is cut off later
if (isRotated)
{
tempCanvas.RotateDegrees(rotation, -1 * originalBitmap.Width / 2f,
originalBitmap.Height / 2f);
}
}
SKBitmap keystoned = null;
if (isKeystoned)
{
keystoned = new SKBitmap(originalBitmap.Width, originalBitmap.Height);
using (var tempCanvas = new SKCanvas(keystoned))
{
tempCanvas.SetMatrix(TaperTransform.Make(new SKSize(originalBitmap.Width, originalBitmap.Height),
keystone > 0 ? TaperSide.Left : TaperSide.Right, TaperCorner.Both, 1 - Math.Abs(keystone)));
tempCanvas.DrawBitmap(rotatedAndZoomed, 0, 0);
rotatedAndZoomed.Dispose();
}
}
return(keystoned ?? rotatedAndZoomed);
}
internal static void DrawBitmap(this SKCanvas canvas, TouchManipulationBitmap bitmap, float transX = 0, float transY = 0, float scale = 1)
{
using (SKPaint paint = new SKPaint())
{
paint.IsAntialias = true;
if (!bitmap.IsHide)
{
canvas.Save();
SKMatrix matrix = bitmap.Matrix;
SKMatrix bitmapMatrix = new SKMatrix(matrix.ScaleX * scale, matrix.SkewX * scale, (matrix.TransX + transX) * scale, matrix.SkewY * scale, matrix.ScaleY * scale, (matrix.TransY + transY) * scale, 0, 0, 1);
//canvas.Concat(ref bitmapMatrix);
canvas.SetMatrix(bitmapMatrix);
canvas.DrawBitmap(bitmap.Bitmap, 0, 0, paint);
canvas.Restore();
}
}
}
// Draw "You are here" waypoint
private static void drawWaypoint(SKCanvas canvas, Point origin, Point position)
{
// Compute draw position
Assembly assembly = typeof(MapViewer).GetTypeInfo().Assembly;
Size waypointSize = new Size(100, 100);
Point drawPosition = new Point(origin.X + position.X, origin.Y + position.Y);
// Allocate memory
using (Stream waypointStream = assembly.GetManifestResourceStream("Waypoint.res.img.waypoint.png"))
using (var skStream = new SKManagedStream(waypointStream))
using (var bitmap = SKBitmap.Decode(skStream))
{
// Draw to canvas
canvas.DrawBitmap(bitmap, SKRect.Create((float)(drawPosition.X - (waypointSize.Width / 2.0)),
(float)(drawPosition.Y - waypointSize.Height), (float)waypointSize.Width, (float)waypointSize.Height));
}
}
private SKBitmap RemoveTransparency(SKImage orig)
{
var original = SKBitmap.FromImage(orig);
// create a new bitmap with the same dimensions
// also avoids the first copy if the color type is index8
var copy = new SKBitmap(original.Width, original.Height);
using var canvas = new SKCanvas(copy);
// clear the bitmap with the desired color for transparency
canvas.Clear(SKColors.White);
// draw the bitmap on top
canvas.DrawBitmap(original, 0, 0);
return(copy);
}
private void Crop()
{
try
{
// create options and image crop
var options = new Options(this.CropWidth, this.CropHeight)
{
Debug = true
};
var crop = new ImageCrop(options);
var watch = Stopwatch.StartNew();
// load the source image
using (var bitmap = SKBitmap.Decode(this.SourceImagePath))
{
// calculate the best crop area
var result = crop.Crop(bitmap);
watch.Stop();
this.DebugImage = this.CreateImageSource(result.DebugInfo.Output);
watch.Start();
// crop the image
SKRect cropRect = new SKRect(result.Area.Left, result.Area.Top, result.Area.Right, result.Area.Bottom);
using (SKBitmap croppedBitmap = new SKBitmap((int)cropRect.Width, (int)cropRect.Height))
using (SKCanvas canvas = new SKCanvas(croppedBitmap))
{
SKRect source = new SKRect(cropRect.Left, cropRect.Top,
cropRect.Right, cropRect.Bottom);
SKRect dest = new SKRect(0, 0, cropRect.Width, cropRect.Height);
canvas.DrawBitmap(bitmap, source, dest);
watch.Stop();
this.CroppedImage = this.CreateImageSource(croppedBitmap);
};
}
this.ErrorText = null;
}
catch (Exception e)
{
this.ErrorText = e.Message;
}
}
private static SKBitmap AutoOrient(SKBitmap bitmap, SKEncodedOrigin origin)
{
Stopwatch orient = new Stopwatch("SkiaSharpOrient");
SKBitmap rotated;
switch (origin)
{
case SKEncodedOrigin.BottomRight:
rotated = new SKBitmap(bitmap.Height, bitmap.Width);
using (var canvas = new SKCanvas(rotated))
{
canvas.RotateDegrees(180, bitmap.Width / 2, bitmap.Height / 2);
canvas.DrawBitmap(bitmap, 0, 0);
}
break;
case SKEncodedOrigin.RightTop:
rotated = new SKBitmap(bitmap.Height, bitmap.Width);
using (var canvas = new SKCanvas(rotated))
{
canvas.Translate(rotated.Width, 0);
canvas.RotateDegrees(90);
canvas.DrawBitmap(bitmap, 0, 0);
}
break;
case SKEncodedOrigin.LeftBottom:
rotated = new SKBitmap(bitmap.Height, bitmap.Width);
using (var canvas = new SKCanvas(rotated))
{
canvas.Translate(0, rotated.Height);
canvas.RotateDegrees(270);
canvas.DrawBitmap(bitmap, 0, 0);
}
break;
default:
rotated = bitmap.Copy();
break;
}
orient.Stop();
return(rotated);
}
/// <summary>Draws the specified image ontop of this one.</summary>
/// <param name="other">The image to draw.</param>
/// <param name="x">The x position.</param>
/// <param name="y">The y position.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
/// <param name="translation">The translation.</param>
public void Draw(SKBitmap other, float x, float y, float width, float height, Translation?translation = null)
{
if (canvas == null)
{
canvas = new SKCanvas(bitmap);
canvasThread = Thread.CurrentThread;
}
else
{
if (Thread.CurrentThread != canvasThread)
{
throw new InvalidOperationException("Canvas Thread Boundary Incursion!");
}
}
using (SKPaint paint = new SKPaint()
{
BlendMode = SKBlendMode.SrcOver, FilterQuality = SKFilterQuality.High,
})
{
if (translation.HasValue)
{
float mx = Width / 2f;
float my = Height / 2f;
if (translation.Value.Rotation != 0)
{
canvas.RotateRadians(translation.Value.Rotation, other.Width / 2, other.Height / 2);
}
if (translation.Value.FlipHorizontally)
{
canvas.Scale(-1, 1);
canvas.Translate(-Width, 0);
}
if (translation.Value.FlipVertically)
{
canvas.Scale(1, -1);
canvas.Translate(1, -Height);
}
}
canvas.DrawBitmap(other, SKRect.Create(x, y, width, height), paint);
}
if (translation.HasValue)
{
canvas.ResetMatrix();
}
}
/// <summary>
/// 裁剪图片
/// </summary>
public static byte[] Crop(Stream imageStream, ImageSize cropSize, int quality = 100)
{
if (imageStream == null)
{
throw new ArgumentNullException(nameof(imageStream));
}
if (cropSize == null)
{
throw new ArgumentNullException(nameof(cropSize));
}
using (SKManagedStream managedStream = new SKManagedStream(imageStream))
{
using (SKBitmap bitmap = SKBitmap.Decode(managedStream))
{
if (bitmap == null)
{
throw new ImageException("传递的参数不是有效图片");
}
ImageSize sourceSize = new ImageSize(bitmap.Width, bitmap.Height);
if (sourceSize.Height < cropSize.Height || sourceSize.Width < cropSize.Width)
{
throw new ImageException("源图片的尺寸不能小于裁剪尺寸");
}
using (SKSurface surface = SKSurface.Create(new SKImageInfo(cropSize.Width, cropSize.Height)))
{
SKCanvas canvas = surface.Canvas;
canvas.Clear(SKColors.White);
int deltaHeight = cropSize.Height - sourceSize.Height;
int deltaWidth = cropSize.Width - sourceSize.Width;
canvas.DrawBitmap(bitmap, deltaWidth / 2, deltaHeight / 2);
using (SKImage image = surface.Snapshot())
{
using (SKData data = image.Encode(SKEncodedImageFormat.Jpeg, quality))
{
return(data.ToArray());
}
}
}
}
}
}
void OnCanvasViewPaintSurface(object sender, SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
// Find rectangle to display bitmap
float scale = Math.Min((float)info.Width / bitmap.Width,
(float)info.Height / bitmap.Height);
SKRect rect = SKRect.Create(scale * bitmap.Width, scale * bitmap.Height);
float x = (info.Width - rect.Width) / 2;
float y = (info.Height - rect.Height) / 2;
rect.Offset(x, y);
// Display bitmap in rectangle
canvas.DrawBitmap(bitmap, rect);
// Adjust center and radius for scaled and offset bitmap
SKPoint center = new SKPoint(scale * CENTER.X + x,
scale * CENTER.Y + y);
float radius = scale * RADIUS;
using (SKPaint paint = new SKPaint())
{
paint.Shader = SKShader.CreateRadialGradient(
center,
radius,
new SKColor[] { SKColors.Black,
SKColors.Transparent },
new float[] { 0.6f, 1 },
SKShaderTileMode.Clamp);
paint.BlendMode = SKBlendMode.DstIn;
// Display rectangle using that gradient and blend mode
canvas.DrawRect(rect, paint);
}
canvas.DrawColor(SKColors.Pink, SKBlendMode.DstOver);
}
private void DrawingLoop(SKCanvas canvas)
{
canvas.Clear(SKColors.DarkBlue);
canvas.DrawBitmap(
backgroundBitmap,
new SKRect(
0,
0,
Settings.General.xAxisLength,
Settings.General.yAxisLength
)
);
player.Draw(canvas);
enemyManager.DrawEnemies(canvas);
projectileManager.DrawProjectiles(canvas);
GraphicalUserInterface.DrawScore(canvas, enemyManager.score);
GraphicalUserInterface.DrawFPS(canvas, (int)loopTimer.GetFPS());
}
/// <summary>
/// Stacks the list of images vertically, stretching them to all have the same width
/// Note that we stack them bottom-up (by reversing image order), because uv coordinate system has v=0 starting at the bottom
/// </summary>
/// <param name="images">The images to stack</param>
/// <returns>The stacked images</returns>
public static SKImage StackImages(List <SKImage> images)
{
images.Reverse();
SKBitmap newBitmap = new SKBitmap(images.Max(i => i.Width), images.Select(i => i.Height).Aggregate((h1, h2) => h1 + h2));
using (SKCanvas canvas = new SKCanvas(newBitmap))
{
canvas.Clear();
var h = 0;
foreach (var img in images)
{
var bitmap = SKBitmap.FromImage(img).Resize(new SKSizeI(newBitmap.Width, img.Height), SKFilterQuality.High);
canvas.DrawBitmap(bitmap, new SKPoint(0, h));
h += img.Height;
}
}
return(SKImage.FromBitmap(newBitmap));
}
public void DrawImage(Image img, long i, long i1, long width, long height)
{
var data = ((Bitmap)img).LockBits(new Rectangle(0, 0, img.Width, img.Height), ImageLockMode.ReadOnly,
PixelFormat.Format32bppArgb);
using (var skbmp = new SKBitmap(new SKImageInfo(img.Width, img.Height, SKColorType.Bgra8888)))
{
skbmp.SetPixels(data.Scan0);
//skbmp.InstallPixels(new SKPixmap(skbmp.Info, data.Scan0));
_image.DrawBitmap(skbmp, new SKRect(i, i1, i + width, i1 + height), _paint);
}
((Bitmap)img).UnlockBits(data);
data = null;
}
public static byte[] Recolor(byte[] data, int size)
{
var bitmap = SKBitmap.Decode(data);
var widthHeight = Math.Min(bitmap.Width, bitmap.Height);
var scale = (float)size / widthHeight;
using (var resultBitmap = new SKBitmap(size, size))
using (var canvas = new SKCanvas(resultBitmap))
using (var paint = new SKPaint())
{
var colorTable = Enumerable.Range(0, 256).Select(i => (byte)(0xC0 & i)).ToArray();
paint.ColorFilter = SKColorFilter.CreateTable(null, null, colorTable, colorTable);
canvas.Scale(scale, scale);
canvas.DrawBitmap(bitmap, (widthHeight - bitmap.Width) / 2, (widthHeight - bitmap.Height) / 2, paint);
return(ToPngData(resultBitmap));
}
}
public static void DrawChicFace(SKCanvas c, SKColor color, int x, int size = 128)
{
using (var path = SKPath.ParseSvgPathData(ChicData.ChicHeadPath))
using (var b = new SKBitmap(320, 320))
{
using (var ca = new SKCanvas(b))
using (var paint = new SKPaint {
FilterQuality = SKFilterQuality.High, IsAntialias = true, Color = color
})
ca.DrawPath(path, paint);
using (var shadow = SKImageFilter.CreateDropShadow(0, 0, 5, 5, SKColors.Black))
using (var paint = new SKPaint {
FilterQuality = SKFilterQuality.High, IsAntialias = true, ImageFilter = shadow
})
c.DrawBitmap(b, new SKRect(x, 0, size, size));
}
}
// Bitmap transformations
public static SKBitmap RotateBitmap(string path, int degrees)
{
SKBitmap rotatedBitmap;
using (var bitmap = SKBitmap.Decode(path))
{
rotatedBitmap = new SKBitmap(bitmap.Height, bitmap.Width);
using (var surface = new SKCanvas(rotatedBitmap))
{
surface.Translate(rotatedBitmap.Width, 0);
surface.RotateDegrees(degrees);
surface.DrawBitmap(bitmap, 0, 0);
}
}
return(rotatedBitmap);
}
public void Draw(SKCanvas canvas)
{
if (!exploded)
{
canvas.DrawBitmap(ChooseBitmap(), GetRect());
GraphicalUserInterface.DrawHealthbar(
canvas,
pos.X,
pos.Y,
(float)(health / maxHealth)
);
animatorJetPack.Draw(canvas, GetRectJetPackFlame());
}
else
{
animatorExpl.Draw(canvas, GetRectExpl());
}
}
private void DrawRevenge(SKCanvas canvas)
{
SKRect rect_Piece;
SKRect tempRect;
tempRect = MainGraphics !.GetActualRectangle(4, 5, 109, 27);
var ThisPaint = MiscHelpers.GetTextPaint(SKColors.Aqua, MainGraphics.GetFontSize(19));
ThisPaint.FakeBoldText = true;
canvas.DrawCustomText("Vengeance", TextExtensions.EnumLayoutOptions.Start, TextExtensions.EnumLayoutOptions.Start, ThisPaint, tempRect, out _);
tempRect = MainGraphics.GetActualRectangle(-1, 27, 109, 27);
canvas.DrawCustomText("2500", TextExtensions.EnumLayoutOptions.Center, TextExtensions.EnumLayoutOptions.Start, ThisPaint, tempRect, out _);
rect_Piece = MainGraphics.GetActualRectangle(6, 59, 95, 80);
canvas.DrawRect(rect_Piece, _redFill);
var ThisImage = ImageExtensions.GetSkBitmap(_thisAssembly !, "revenge.png");
canvas.DrawBitmap(ThisImage, rect_Piece, MainGraphics.BitPaint);
}
void Display(SKCanvas canvas, int index, SKRect rect)
{
string text = String.Format("{0}: {1:F2} msec", descriptions[index],
(double)elapsedTimes[index] / REPS);
SKRect bounds = new SKRect();
using (SKPaint textPaint = new SKPaint())
{
textPaint.TextSize = (float)(12 * canvasView.CanvasSize.Width / canvasView.Width);
textPaint.TextAlign = SKTextAlign.Center;
textPaint.MeasureText("Tly", ref bounds);
canvas.DrawText(text, new SKPoint(rect.MidX, rect.Bottom - bounds.Bottom), textPaint);
rect.Bottom -= bounds.Height;
canvas.DrawBitmap(bitmaps[index], rect, BitmapStretch.Uniform);
}
}
private void DrawImageWatermark(IBitmapList bitmaps)
{
foreach (var bitmap in bitmaps)
{
bitmap.AppendSaveAsSuffix(Options.Watermark.FileNameSuffix);
var realBitmap = (SKBitmap)bitmap.Source;
using (var canvas = new SKCanvas(realBitmap))
{
var imageSize = new Size(realBitmap.Width, realBitmap.Height);
var coord = ImageHelper.CalculateCoord(imageSize,
Options.Watermark.InitialCoord, Options.Watermark.IsRandomCoord);
// 绘制图像水印
canvas.DrawBitmap(_watermarkBitmap, coord.X, coord.Y);
}
}
}
private unsafe void DrawPixels(PixelBuffer pixelBuffer, SKCanvas canvas, SKPaint paint, Rectangle r, int x, int y)
{
if (!Monitor.IsEntered(_syncRoot))
{
throw new InvalidOperationException();
}
r.Offset(-x, -y);
Rectangle bitmapRect = new Rectangle(0, 0, pixelBuffer.Width, pixelBuffer.Height);
r.Intersect(bitmapRect);
if (r.Width == 0 || r.Height == 0)
{
return;
}
canvas.DrawBitmap(pixelBuffer.Source, new SKPoint(r.X + x, r.Y + y), paint);
}
protected override void OnDrawSample(SKCanvas canvas, int width, int height)
{
canvas.Clear(SKColors.White);
var size = width > height ? height : width;
var small = size / 5;
using (var stream = new SKManagedStream(SampleMedia.Images.Baboon))
using (var bitmap = SKBitmap.Decode(stream))
using (var filterMag = SKImageFilter.CreateMagnifier(SKRect.Create(small * 2, small * 2, small * 3, small * 3), small))
using (var filterBlur = SKImageFilter.CreateBlur(5, 5, filterMag))
using (var paint = new SKPaint())
{
paint.ImageFilter = filterBlur;
canvas.DrawBitmap(bitmap, SKRect.Create(width, height), paint);
}
}
// Got the code from https://stackoverflow.com/a/45620498/1074470
private static SKBitmap HandleOrientation(SKBitmap bitmap, SKCodecOrigin orientation)
{
SKBitmap rotated;
switch (orientation)
{
case SKCodecOrigin.BottomRight:
using (var surface = new SKCanvas(bitmap))
{
surface.RotateDegrees(180, bitmap.Width / 2, bitmap.Height / 2);
surface.DrawBitmap(bitmap.Copy(), 0, 0);
}
return(bitmap);
case SKCodecOrigin.RightTop:
rotated = new SKBitmap(bitmap.Height, bitmap.Width);
using (var surface = new SKCanvas(rotated))
{
surface.Translate(rotated.Width, 0);
surface.RotateDegrees(90);
surface.DrawBitmap(bitmap, 0, 0);
}
return(rotated);
case SKCodecOrigin.LeftBottom:
rotated = new SKBitmap(bitmap.Height, bitmap.Width);
using (var surface = new SKCanvas(rotated))
{
surface.Translate(0, rotated.Height);
surface.RotateDegrees(270);
surface.DrawBitmap(bitmap, 0, 0);
}
return(rotated);
default:
return(bitmap);
}
}
/*
* Tela di disegno, disegna tutti gli elementi presenti nel Canvas
*/
private void OnCanvasViewBitMapImgSurface(object sender, SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
display.CalculateDisplayVertexPixelCoordinate(info);
display.AspectRatio = Math.Min((float)info.Width / bitMapArea.BitMap.Width,
(float)info.Height / bitMapArea.BitMap.Height);
bitMapArea.CalculateBitMapSize(info, display);
rectangleBitMapImg = new SKRect(bitMapArea.Left, bitMapArea.Top, bitMapArea.Right, bitMapArea.Bottom);
canvas.DrawBitmap(bitMapArea.BitMap, rectangleBitMapImg);
DisplayChange(canvas);
foreach (RectangleArea rectangleArea in allRectangleArea)
{
SKRect rectSelectionArea = new SKRect(rectangleArea.Left, rectangleArea.Top, rectangleArea.Right, rectangleArea.Bottom);
if (rectangleArea.ResizeMove)
{
paintResizeRectSelectionArea = new SKPaint
{
IsAntialias = true,
Style = SKPaintStyle.Fill,
Color = SKColors.LightSkyBlue,
};
canvas.DrawCircle(rectangleArea.Left, rectangleArea.Top, rectangleArea.RadiousOfCircleRect, paintResizeRectSelectionArea);
canvas.DrawCircle(rectangleArea.Left, rectangleArea.Bottom, rectangleArea.RadiousOfCircleRect, paintResizeRectSelectionArea);
canvas.DrawCircle(rectangleArea.Right, rectangleArea.Top, rectangleArea.RadiousOfCircleRect, paintResizeRectSelectionArea);
canvas.DrawCircle(rectangleArea.Right, rectangleArea.Bottom, rectangleArea.RadiousOfCircleRect, paintResizeRectSelectionArea);
rectangleArea.ResizeMove = false;
}
rectangleArea.CalculateNewPositionIDRect();
canvas.DrawRect(rectSelectionArea, rectangleArea.PaintRect);
canvas.DrawText(rectangleArea.Id, rectangleArea.PositionIDRect.X, rectangleArea.PositionIDRect.Y, rectangleArea.PaintIDRect);
}
}
internal static SKBitmap GetBlurBitmap(SKBitmap bitmap, SKRect rect)
{
SKBitmap outBitmap = new SKBitmap((int)rect.Width, (int)rect.Height);
using (SKBitmap tempBitmap = new SKBitmap(CalcBackgraundBitmapsize(bitmap.Width), CalcBackgraundBitmapsize(bitmap.Height)))
using (SKCanvas canvas = new SKCanvas(outBitmap))
using (SKPaint paint = new SKPaint())
{
bitmap.ScalePixels(tempBitmap, SKFilterQuality.Low);
paint.IsAntialias = true;
float blur = 0.08f * Math.Max(rect.Width, rect.Height);
blur = blur < 100 ? blur : 100;
paint.ImageFilter = SKImageFilter.CreateBlur(blur, blur);
canvas.Clear();
canvas.DrawBitmap(tempBitmap, rect, paint);
}
GC.Collect(0);
return(outBitmap);
}