public override void Draw (Canvas canvas)
{
var bounds = Bounds;
if (alpha != 255) {
paint.Alpha = 255;
if (SecondBitmap != null) {
if (shader1 == null)
shader1 = new BitmapShader (FirstBitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
shader1.SetLocalMatrix (matrix);
paint.SetShader (shader1);
canvas.DrawRect (bounds, paint);
} else
canvas.DrawColor (defaultColor.ToAndroidColor());
}
if (alpha != 0) {
paint.Alpha = alpha;
if (FirstBitmap != null) {
if (shader2 == null)
shader2 = new BitmapShader (SecondBitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
shader2.SetLocalMatrix (matrix);
paint.SetShader (shader2);
canvas.DrawRect (bounds, paint);
} else
canvas.DrawColor (defaultColor.ToAndroidColor());
}
}
protected override Bitmap Transform(IBitmapPool bitmapPool, Bitmap source, int outWidth, int outHeight)
{
int size = Math.Min(source.Width, source.Height);
int width = (source.Width - size) / 2;
int height = (source.Height - size) / 2;
Bitmap squaredBitmap = Bitmap.CreateBitmap(source, width, height, size, size);
if (squaredBitmap != source)
{
source.Recycle();
}
Bitmap bitmap = Bitmap.CreateBitmap(size, size, Bitmap.Config.Argb8888);
Canvas canvas = new Canvas(bitmap);
Paint paint = new Paint();
BitmapShader shader = new BitmapShader(squaredBitmap, BitmapShader.TileMode.Clamp,
BitmapShader.TileMode.Clamp);
paint.SetShader(shader);
paint.AntiAlias = true;
float r = size / 2f;
canvas.DrawCircle(r, r, r, paint);
squaredBitmap.Recycle();
return BitmapResource.Obtain(bitmap, bitmapPool).Get();
}
public static Bitmap ToRounded(Bitmap source, float rad, double cropWidthRatio, double cropHeightRatio, double borderSize, string borderHexColor)
{
double sourceWidth = source.Width;
double sourceHeight = source.Height;
double desiredWidth = sourceWidth;
double desiredHeight = sourceHeight;
double desiredRatio = cropWidthRatio / cropHeightRatio;
double currentRatio = sourceWidth / sourceHeight;
if (currentRatio > desiredRatio)
desiredWidth = (cropWidthRatio * sourceHeight / cropHeightRatio);
else if (currentRatio < desiredRatio)
desiredHeight = (cropHeightRatio * sourceWidth / cropWidthRatio);
float cropX = (float)((sourceWidth - desiredWidth) / 2d);
float cropY = (float)((sourceHeight - desiredHeight) / 2d);
if (rad == 0)
rad = (float)(Math.Min(desiredWidth, desiredHeight) / 2d);
else
rad = (float)(rad * (desiredWidth + desiredHeight) / 2d / 500d);
Bitmap bitmap = Bitmap.CreateBitmap((int)desiredWidth, (int)desiredHeight, Bitmap.Config.Argb8888);
using (Canvas canvas = new Canvas(bitmap))
using (Paint paint = new Paint())
using (BitmapShader shader = new BitmapShader(source, Shader.TileMode.Clamp, Shader.TileMode.Clamp))
using (Matrix matrix = new Matrix())
{
if (cropX != 0 || cropY != 0)
{
matrix.SetTranslate(-cropX, -cropY);
shader.SetLocalMatrix(matrix);
}
paint.SetShader(shader);
paint.AntiAlias = true;
RectF rectF = new RectF(0f, 0f, (float)desiredWidth, (float)desiredHeight);
canvas.DrawRoundRect(rectF, rad, rad, paint);
if (borderSize > 0d)
{
borderSize = (borderSize * (desiredWidth + desiredHeight) / 2d / 500d);
paint.Color = borderHexColor.ToColor(); ;
paint.SetStyle(Paint.Style.Stroke);
paint.StrokeWidth = (float)borderSize;
paint.SetShader(null);
RectF borderRectF = new RectF((float)(0d + borderSize/2d), (float)(0d + borderSize/2d),
(float)(desiredWidth - borderSize/2d), (float)(desiredHeight - borderSize/2d));
canvas.DrawRoundRect(borderRectF, rad, rad, paint);
}
return bitmap;
}
}
public static Bitmap ToRounded(Bitmap source, float rad)
{
int size = Math.Min(source.Width, source.Height);
int dx = (source.Width - size) / 2;
int dy = (source.Height - size) / 2;
Bitmap bitmap = Bitmap.CreateBitmap(size, size, Bitmap.Config.Argb8888);
using (Canvas canvas = new Canvas(bitmap))
using (Paint paint = new Paint())
using (BitmapShader shader = new BitmapShader(source, Shader.TileMode.Clamp, Shader.TileMode.Clamp))
using (Matrix matrix = new Matrix())
{
if (dx != 0 || dy != 0)
{
// source isn't square, move viewport to centre
matrix.SetTranslate(-dx, -dy);
shader.SetLocalMatrix(matrix);
}
paint.SetShader(shader);
paint.AntiAlias = true;
RectF rectF = new RectF(0, 0, size, size);
canvas.DrawRoundRect(rectF, rad, rad, paint);
return bitmap;
}
}
public Bitmap Transform(Bitmap source)
{
int size = Math.Min(source.Width, source.Height);
int width = (source.Width - size) / 2;
int height = (source.Height - size) / 2;
var bitmap = Bitmap.CreateBitmap(size, size, Bitmap.Config.Argb4444);
var canvas = new Canvas(bitmap);
var paint = new Paint();
var shader =
new BitmapShader(source, BitmapShader.TileMode.Clamp, BitmapShader.TileMode.Clamp);
if (width != 0 || height != 0)
{
// source isn't square, move viewport to center
var matrix = new Matrix();
matrix.SetTranslate(-width, -height);
shader.SetLocalMatrix(matrix);
}
paint.SetShader(shader);
paint.AntiAlias = true;
float r = size / 2f;
canvas.DrawCircle(r, r, r, paint);
source.Recycle();
return bitmap;
}
public static Bitmap ToCropped(Bitmap source, double zoomFactor, double xOffset, double yOffset, double cropWidthRatio, double cropHeightRatio)
{
double sourceWidth = source.Width;
double sourceHeight = source.Height;
double desiredWidth = sourceWidth;
double desiredHeight = sourceHeight;
double desiredRatio = cropWidthRatio / cropHeightRatio;
double currentRatio = sourceWidth / sourceHeight;
if (currentRatio > desiredRatio)
desiredWidth = (cropWidthRatio * sourceHeight / cropHeightRatio);
else if (currentRatio < desiredRatio)
desiredHeight = (cropHeightRatio * sourceWidth / cropWidthRatio);
xOffset = xOffset * desiredWidth;
yOffset = yOffset * desiredHeight;
desiredWidth = desiredWidth / zoomFactor;
desiredHeight = desiredHeight / zoomFactor;
float cropX = (float)(((sourceWidth - desiredWidth) / 2) + xOffset);
float cropY = (float)(((sourceHeight - desiredHeight) / 2) + yOffset);
if (cropX < 0)
cropX = 0;
if (cropY < 0)
cropY = 0;
if (cropX + desiredWidth > sourceWidth)
cropX = (float)(sourceWidth - desiredWidth);
if (cropY + desiredHeight > sourceHeight)
cropY = (float)(sourceHeight - desiredHeight);
Bitmap bitmap = Bitmap.CreateBitmap((int)desiredWidth, (int)desiredHeight, source.GetConfig());
using (Canvas canvas = new Canvas(bitmap))
using (Paint paint = new Paint())
using (BitmapShader shader = new BitmapShader(source, Shader.TileMode.Clamp, Shader.TileMode.Clamp))
using (Matrix matrix = new Matrix())
{
if (cropX != 0 || cropY != 0)
{
matrix.SetTranslate(-cropX, -cropY);
shader.SetLocalMatrix(matrix);
}
paint.SetShader(shader);
paint.AntiAlias = false;
RectF rectF = new RectF(0, 0, (int)desiredWidth, (int)desiredHeight);
canvas.DrawRect(rectF, paint);
return bitmap;
}
}
public CircleDrawable(Bitmap bmp)
{
this.bmp = bmp;
this.bmpShader = new BitmapShader(bmp, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
this.paint = new Paint() { AntiAlias = true };
this.paint.SetShader(bmpShader);
this.oval = new RectF();
}
public void Refresh()
{
LinkedList<DView> views = myEventHandler.GetAllView();
Canvas c = null;
try
{
if (surfaceHolder.Surface.IsValid)
{
c = surfaceHolder.LockCanvas();
lock (surfaceHolder)
{
Paint paint = new Paint();
Paint paintShader = new Paint();
paint.Color = Color.Black;
c.DrawRect(0, 0
, this.Width, this.Height, paint);
foreach (var view in views)
{
if(view.ViewType==DViewType.Circle)
{
Color color=new Color(view.Pattern.Color);
color.A=255;
paint.Color = color;
c.DrawCircle(view.X, view.Y, view.Radius, paint);
}else
{
if (view.Pattern.PatternType == DPatternType.Image)
{
BitmapShader shader = new BitmapShader(view.Pattern.Image, Shader.TileMode.Repeat, Shader.TileMode.Repeat);
paintShader.SetStyle(Paint.Style.Fill);
paintShader.SetShader(shader);
c.DrawRect(view.X - view.Radius, view.Y - view.Radius
, view.X + view.Radius, view.Y + view.Radius, paintShader);
}else
{
Color color = new Color(view.Pattern.Color);
color.A = 255;
paint.Color = color;
c.DrawRect(view.X - view.Radius, view.Y - view.Radius
, view.X + view.Radius, view.Y + view.Radius, paint);
}
}
}
}
}
}
catch(Exception ex)
{
Log.Error("MySurfaceView",ex.Message);
}
finally
{
if (c != null)
surfaceHolder.UnlockCanvasAndPost(c);
}
}
public static Bitmap ToRotated(Bitmap source, double degrees, bool ccw, bool resize)
{
if (degrees == 0 || degrees % 360 == 0)
return source;
if (ccw)
degrees = 360d - degrees;
Bitmap bitmap = Bitmap.CreateBitmap(source.Width, source.Height, Bitmap.Config.Argb8888);
using (Canvas canvas = new Canvas(bitmap))
using (Paint paint = new Paint())
using (BitmapShader shader = new BitmapShader(source, Shader.TileMode.Clamp, Shader.TileMode.Clamp))
using (Matrix matrix = new Matrix())
{
paint.AntiAlias = true;
paint.Dither = true;
paint.FilterBitmap = true;
float targetRotation = (float)degrees;
float rotationPivotX = (float)source.Width / 2.0f;
float rotationPivotY = (float)source.Height / 2.0f;
float targetWidth = source.Width;
float targetHeight = source.Height;
if (resize && (degrees % 180 != 0))
{
double cosR = Math.Cos(DegreesToRadians(targetRotation));
double sinR = Math.Sin(DegreesToRadians(targetRotation));
// Recalculate dimensions after rotation around pivot point
double x1T = rotationPivotX * (1.0 - cosR) + (rotationPivotY * sinR);
double y1T = rotationPivotY * (1.0 - cosR) - (rotationPivotX * sinR);
double x2T = x1T + (targetWidth * cosR);
double y2T = y1T + (targetWidth * sinR);
double x3T = x1T + (targetWidth * cosR) - (targetHeight * sinR);
double y3T = y1T + (targetWidth * sinR) + (targetHeight * cosR);
double x4T = x1T - (targetHeight * sinR);
double y4T = y1T + (targetHeight * cosR);
double maxX = Math.Max(x4T, Math.Max(x3T, Math.Max(x1T, x2T)));
double minX = Math.Min(x4T, Math.Min(x3T, Math.Min(x1T, x2T)));
double maxY = Math.Max(y4T, Math.Max(y3T, Math.Max(y1T, y2T)));
double minY = Math.Min(y4T, Math.Min(y3T, Math.Min(y1T, y2T)));
targetWidth = (int) Math.Floor(maxX - minX);
targetHeight = (int) Math.Floor(maxY - minY);
float sx = (float)source.Width / targetWidth;
float sy = (float)source.Height / targetHeight;
matrix.SetScale(sx, sy, rotationPivotX, rotationPivotY);
}
matrix.PostRotate(targetRotation, rotationPivotX, rotationPivotY);
canvas.DrawBitmap(source, matrix, paint);
return bitmap;
}
}
public VignetteDrawable(Bitmap bitmap, float cornerRadius = 5, int margin = 3, bool withEffect = true)
{
useGradientOverlay = withEffect;
mCornerRadius = cornerRadius;
bitmapShader = new BitmapShader (bitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
paint = new Paint () { AntiAlias = true };
paint.SetShader (bitmapShader);
margin = margin;
}
private void Init()
{
Drawable drawable = this.Drawable;
bitmap = Bitmap.CreateScaledBitmap (((BitmapDrawable)drawable).Bitmap, this.Width, this.Height, false);
BitmapShader shader;
shader = new BitmapShader (bitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
// init paint
paint = new Paint ();
paint.AntiAlias = true;
paint.SetShader (shader);
}
public RoundedImage(Bitmap bitmap)
{
mBitmap = bitmap;
mRectF = new RectF();
mPaint = new Paint();
mPaint.AntiAlias = true;
mPaint.Dither = true;
BitmapShader shader = new BitmapShader(bitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
mPaint.SetShader(shader);
// NOTE: we assume bitmap is properly scaled to current density
mBitmapWidth = mBitmap.Width;
mBitmapHeight = mBitmap.Height;
}
public RoundedDrawable(Bitmap bitmap) : base()
{
mBitmap = bitmap;
mRectF = new RectF();
mPaint = new Paint();
mPaint.AntiAlias = true;
mPaint.Dither = true;
BitmapShader shader = new BitmapShader(bitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
mPaint.SetShader(shader);
// Try to get it circular, even if the given bitmap isn't square
mBitmapWidth = Math.Min( mBitmap.Width, mBitmap.Height);
mBitmapHeight = Math.Min(mBitmap.Width, mBitmap.Height);
}
public static Bitmap ToRotatedBitmap(this Bitmap sourceBitmap, int rotationDegrees)
{
if (rotationDegrees == 0)
return sourceBitmap;
int width = sourceBitmap.Width;
int height = sourceBitmap.Height;
if (rotationDegrees == 90 || rotationDegrees == 270)
{
width = sourceBitmap.Height;
height = sourceBitmap.Width;
}
Bitmap bitmap = Bitmap.CreateBitmap(width, height, sourceBitmap.GetConfig());
using (Canvas canvas = new Canvas(bitmap))
using (Paint paint = new Paint())
using (BitmapShader shader = new BitmapShader(sourceBitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp))
using (Matrix matrix = new Matrix())
{
// paint.AntiAlias = true;
// paint.Dither = true;
// paint.FilterBitmap = true;
canvas.Save(Android.Graphics.SaveFlags.Matrix);
if (rotationDegrees == 90)
canvas.Rotate(rotationDegrees, width / 2, width / 2);
else if (rotationDegrees == 270)
canvas.Rotate(rotationDegrees, height / 2, height / 2);
else
canvas.Rotate(rotationDegrees, width / 2, height / 2);
canvas.DrawBitmap(sourceBitmap, matrix, paint);
canvas.Restore();
}
if (sourceBitmap != null && sourceBitmap.Handle != IntPtr.Zero && !sourceBitmap.IsRecycled)
{
sourceBitmap.Recycle();
sourceBitmap.Dispose();
}
return bitmap;
}
public RoundCornerDrawable(Bitmap bitmap, float cornerRadius = 5, int margin = 3)
{
mCornerRadius = cornerRadius;
bitmapShader = new BitmapShader (bitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
paint = new Paint () {
AntiAlias = true,
};
paint.SetShader (bitmapShader);
strokePaint = new Paint () {
Color = Color.Rgb (200, 200, 200),
StrokeWidth = 2,
};
strokePaint.SetStyle (Paint.Style.Stroke);
this.margin = margin;
}
public static Bitmap ToRounded(Bitmap source, float rad, double cropWidthRatio, double cropHeightRatio)
{
double sourceWidth = source.Width;
double sourceHeight = source.Height;
double desiredWidth = sourceWidth;
double desiredHeight = sourceHeight;
double desiredRatio = cropWidthRatio / cropHeightRatio;
double currentRatio = sourceWidth / sourceHeight;
if (currentRatio > desiredRatio)
desiredWidth = (cropWidthRatio * sourceHeight / cropHeightRatio);
else if (currentRatio < desiredRatio)
desiredHeight = (cropHeightRatio * sourceWidth / cropWidthRatio);
float cropX = (float)((sourceWidth - desiredWidth) / 2);
float cropY = (float)((sourceHeight - desiredHeight) / 2);
if (rad == 0)
rad = (float)(Math.Min(desiredWidth, desiredHeight) / 2);
Bitmap bitmap = Bitmap.CreateBitmap((int)desiredWidth, (int)desiredHeight, Bitmap.Config.Argb8888);
using (Canvas canvas = new Canvas(bitmap))
using (Paint paint = new Paint())
using (BitmapShader shader = new BitmapShader(source, Shader.TileMode.Clamp, Shader.TileMode.Clamp))
using (Matrix matrix = new Matrix())
{
if (cropX != 0 || cropY != 0)
{
matrix.SetTranslate(-cropX, -cropY);
shader.SetLocalMatrix(matrix);
}
paint.SetShader(shader);
paint.AntiAlias = true;
RectF rectF = new RectF(0, 0, (int)desiredWidth, (int)desiredHeight);
canvas.DrawRoundRect(rectF, rad, rad, paint);
return bitmap;
}
}
public VignetteDrawable (Bitmap bitmap, float cornerRadius = 5, int margin = 3, bool withEffect = true)
{
useGradientOverlay = withEffect;
mCornerRadius = cornerRadius;
bitmapShader = new BitmapShader (bitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
paint = new Paint () {
AntiAlias = true,
};
paint.SetShader (bitmapShader);
strokePaint = new Paint () {
Color = Color.Rgb (200, 200, 200),
StrokeWidth = 2,
};
strokePaint.SetStyle (Paint.Style.FillAndStroke);
this.margin = margin;
}
public RoundedDrawable(Bitmap bitmap)
{
_mBitmapWidth = bitmap.Width;
_mBitmapHeight = bitmap.Height;
_mBitmapRect.Set(0, 0, _mBitmapWidth, _mBitmapHeight);
_mBitmapShader = new BitmapShader(bitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
_mBitmapShader.SetLocalMatrix(_mShaderMatrix);
_mBitmapPaint = new Paint();
_mBitmapPaint.SetStyle(Paint.Style.Fill);
_mBitmapPaint.AntiAlias = (true);
_mBitmapPaint.SetShader(_mBitmapShader);
_mBorderPaint = new Paint();
_mBorderPaint.SetStyle(Paint.Style.Stroke);
_mBorderPaint.AntiAlias = (true);
_mBorderPaint.Color = Color.Black;
_mBorderPaint.StrokeWidth = (_mBorderWidth);
}
public static Bitmap ToCropped(Bitmap source, double zoomFactor, double xOffset, double yOffset, double cropWidthRatio, double cropHeightRatio)
{
double sourceWidth = source.Width;
double sourceHeight = source.Height;
double desiredWidth = sourceWidth;
double desiredHeight = sourceHeight;
double desiredRatio = cropWidthRatio / cropHeightRatio;
double currentRatio = sourceWidth / sourceHeight;
if (currentRatio > desiredRatio)
desiredWidth = (cropWidthRatio * sourceHeight / cropHeightRatio);
else if (currentRatio < desiredRatio)
desiredHeight = (cropHeightRatio * sourceWidth / cropWidthRatio);
desiredWidth = zoomFactor * desiredWidth;
desiredHeight = zoomFactor * desiredHeight;
float cropX = (float)(((sourceWidth - desiredWidth) / 2) + xOffset);
float cropY = (float)(((sourceHeight - desiredHeight) / 2) + yOffset);
Bitmap bitmap = Bitmap.CreateBitmap((int)desiredWidth, (int)desiredHeight, Bitmap.Config.Argb8888);
using (Canvas canvas = new Canvas(bitmap))
using (Paint paint = new Paint())
using (BitmapShader shader = new BitmapShader(source, Shader.TileMode.Clamp, Shader.TileMode.Clamp))
using (Matrix matrix = new Matrix())
{
matrix.SetTranslate(-cropX, -cropY);
shader.SetLocalMatrix(matrix);
paint.SetShader(shader);
paint.AntiAlias = true;
return bitmap;
}
}
protected override void OnDraw(Canvas canvas)
{
int mBorderWidth;
int mCanvasSize;
Bitmap mImage;
Paint mPaint;
Paint mPaintBorder;
mPaint = new Paint();
mPaint.AntiAlias = true;
mPaintBorder = new Paint();
mPaintBorder.Color = BorderColor;
mPaint.AntiAlias = true;
mImage = DrawableToBitmap(Drawable);
mBorderWidth = 2;
if (mImage != null)
{
mCanvasSize = canvas.Width;
if (canvas.Height < mCanvasSize)
{
mCanvasSize = canvas.Height;
}
Bitmap scaledBitmap = Bitmap.CreateScaledBitmap(mImage, mCanvasSize, mCanvasSize, true); //true --> apply the given scaleType.
BitmapShader shader = new BitmapShader(scaledBitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
mPaint.SetShader(shader);
int circleCenter = (mCanvasSize - (mBorderWidth * 2)) / 2;
if (ImageBorderVisibility)
canvas.DrawCircle(circleCenter + mBorderWidth, circleCenter + mBorderWidth, ((mCanvasSize - (mBorderWidth * 2)) / 2) + mBorderWidth - 4.0f, mPaintBorder);
canvas.DrawCircle(circleCenter + mBorderWidth, circleCenter + mBorderWidth, ((mCanvasSize - (mBorderWidth * 2)) / 2) - 4.0f, mPaint);
}
}
public Bitmap Transform(Bitmap source)
{
Bitmap result = Bitmap.CreateBitmap(source.Width, source.Height, source.GetConfig());
Bitmap noise;
try
{
noise = picasso.Load(Resource.Drawable.noise).Get();
}
catch (Exception)
{
throw new Exception("Failed to apply transformation! Missing resource.");
}
BitmapShader shader = new BitmapShader(noise, Shader.TileMode.Repeat, Shader.TileMode.Repeat);
ColorMatrix colorMatrix = new ColorMatrix();
colorMatrix.SetSaturation(0);
ColorMatrixColorFilter filter = new ColorMatrixColorFilter(colorMatrix);
Paint paint = new Paint(PaintFlags.AntiAlias);
paint.SetColorFilter(filter);
Canvas canvas = new Canvas(result);
canvas.DrawBitmap(source, 0, 0, paint);
paint.SetColorFilter(null);
paint.SetShader(shader);
paint.SetXfermode(new PorterDuffXfermode(PorterDuff.Mode.Multiply));
canvas.DrawRect(0, 0, canvas.Width, canvas.Height, paint);
source.Recycle();
noise.Recycle();
return result;
}
/**
* Reinitializes the shader texture used to fill in
* the Circle upon drawing.
*/
public void RefreshBitmapShader()
{
_shader = new BitmapShader(Bitmap.CreateScaledBitmap(_image, _canvasSize, _canvasSize, false), Shader.TileMode.Clamp, Shader.TileMode.Clamp);
}
protected override void OnDraw(Canvas canvas)
{
// load the bitmap
image = drawableToBitmap(Drawable);
// init shader
if (image != null)
{
canvasSize = canvas.Width;
if (canvas.Height < canvasSize)
{
canvasSize = canvas.Height;
}
BitmapShader shader = new BitmapShader(Bitmap.CreateScaledBitmap(image, canvasSize, canvasSize, false), Shader.TileMode.Clamp, Shader.TileMode.Clamp);
paint.SetShader(shader);
int circleCenter = (canvasSize - (borderWidth * 2)) / 2;
canvas.DrawCircle(circleCenter + borderWidth, circleCenter + borderWidth, ((canvasSize - (borderWidth * 2)) / 2) + borderWidth - 4.0f, paintBorder);
canvas.DrawCircle(circleCenter + borderWidth, circleCenter + borderWidth, ((canvasSize - (borderWidth * 2)) / 2) - 4.0f, paint);
}
}
private void setup() {
if (!mReady) {
mSetupPending = true;
return;
}
if (mBitmap == null) {
return;
}
mBitmapShader = new BitmapShader(mBitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
mBitmapPaint.AntiAlias = true;
mBitmapPaint.SetShader(mBitmapShader);
mBorderPaint.SetStyle (Paint.Style.Stroke);
mBorderPaint.AntiAlias = true;
//bug ,报错
var packageName = Context.Resources.GetString(Resource.String.app_name);
mBorderPaint.Color = Context.Resources.GetColor(mBorderColor);
mBorderPaint.StrokeWidth = mBorderWidth;
mFillPaint.SetStyle(Paint.Style.Fill);
mFillPaint.AntiAlias=true;
mFillPaint.Color = Context.Resources.GetColor(mFillColor);
mBitmapHeight = mBitmap.Height;
mBitmapWidth = mBitmap.Width;
mBorderRect.Set(0, 0, Width, Height);
mBorderRadius = Java.Lang.Math.Min((mBorderRect.Height()- mBorderWidth) / 2, (mBorderRect.Width() - mBorderWidth) / 2);
mDrawableRect.Set(mBorderRect);
if (!mBorderOverlay) {
mDrawableRect.Inset(mBorderWidth, mBorderWidth);
}
mDrawableRadius = Java.Lang.Math.Min(mDrawableRect.Height() / 2, mDrawableRect.Width() / 2);
updateShaderMatrix();
Invalidate ();
}
private void Setup()
{
if (!_mReady)
{
_mSetupPending = true;
return;
}
if (Width == 0 && Height == 0)
{
return;
}
if (_mBitmap == null)
{
Invalidate();
return;
}
_mBitmapShader = new BitmapShader(_mBitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
_mBitmapPaint.AntiAlias = true;
_mBitmapPaint.SetShader(_mBitmapShader);
_mBorderPaint.SetStyle(Paint.Style.Stroke);
_mBorderPaint.AntiAlias = true;
_mBorderPaint.Color = new Color(_mBorderColor);
_mBorderPaint.StrokeWidth = _mBorderWidth;
_mFillPaint.SetStyle(Paint.Style.Fill);
_mFillPaint.AntiAlias = true;
_mFillPaint.Color = new Color(_mFillColor);
_mBitmapHeight = _mBitmap.Height;
_mBitmapWidth = _mBitmap.Width;
_mBorderRect.Set(0, 0, Width, Height);
_mBorderRadius = Math.Min((_mBorderRect.Height() - _mBorderWidth)/2.0f,
(_mBorderRect.Width() - _mBorderWidth)/2.0f);
_mDrawableRect.Set(_mBorderRect);
if (!_mBorderOverlay)
{
_mDrawableRect.Inset(_mBorderWidth, _mBorderWidth);
}
_mDrawableRadius = Math.Min(_mDrawableRect.Height()/2.0f, _mDrawableRect.Width()/2.0f);
UpdateShaderMatrix();
Invalidate();
}
public static Bitmap ToTransformedCorners(Bitmap source, double topLeftCornerSize, double topRightCornerSize, double bottomLeftCornerSize, double bottomRightCornerSize,
CornerTransformType cornersTransformType, double cropWidthRatio, double cropHeightRatio)
{
double sourceWidth = source.Width;
double sourceHeight = source.Height;
double desiredWidth = sourceWidth;
double desiredHeight = sourceHeight;
double desiredRatio = cropWidthRatio / cropHeightRatio;
double currentRatio = sourceWidth / sourceHeight;
if (currentRatio > desiredRatio)
{
desiredWidth = (cropWidthRatio * sourceHeight / cropHeightRatio);
}
else if (currentRatio < desiredRatio)
{
desiredHeight = (cropHeightRatio * sourceWidth / cropWidthRatio);
}
topLeftCornerSize = topLeftCornerSize * (desiredWidth + desiredHeight) / 2 / 100;
topRightCornerSize = topRightCornerSize * (desiredWidth + desiredHeight) / 2 / 100;
bottomLeftCornerSize = bottomLeftCornerSize * (desiredWidth + desiredHeight) / 2 / 100;
bottomRightCornerSize = bottomRightCornerSize * (desiredWidth + desiredHeight) / 2 / 100;
float cropX = (float)((sourceWidth - desiredWidth) / 2);
float cropY = (float)((sourceHeight - desiredHeight) / 2);
Bitmap bitmap = Bitmap.CreateBitmap((int)desiredWidth, (int)desiredHeight, Bitmap.Config.Argb8888);
using (Canvas canvas = new Canvas(bitmap))
using (Paint paint = new Paint())
using (BitmapShader shader = new BitmapShader(source, Shader.TileMode.Clamp, Shader.TileMode.Clamp))
using (Matrix matrix = new Matrix())
using (var path = new Path())
{
if (cropX != 0 || cropY != 0)
{
matrix.SetTranslate(-cropX, -cropY);
shader.SetLocalMatrix(matrix);
}
paint.SetShader(shader);
paint.AntiAlias = true;
// TopLeft
if (cornersTransformType.HasFlag(CornerTransformType.TopLeftCut))
{
path.MoveTo(0, (float)topLeftCornerSize);
path.LineTo((float)topLeftCornerSize, 0);
}
else if (cornersTransformType.HasFlag(CornerTransformType.TopLeftRounded))
{
path.MoveTo(0, (float)topLeftCornerSize);
path.QuadTo(0, 0, (float)topLeftCornerSize, 0);
}
else
{
path.MoveTo(0, 0);
}
// TopRight
if (cornersTransformType.HasFlag(CornerTransformType.TopRightCut))
{
path.LineTo((float)(desiredWidth - topRightCornerSize), 0);
path.LineTo((float)desiredWidth, (float)topRightCornerSize);
}
else if (cornersTransformType.HasFlag(CornerTransformType.TopRightRounded))
{
path.LineTo((float)(desiredWidth - topRightCornerSize), 0);
path.QuadTo((float)desiredWidth, 0, (float)desiredWidth, (float)topRightCornerSize);
}
else
{
path.LineTo((float)desiredWidth ,0);
}
// BottomRight
if (cornersTransformType.HasFlag(CornerTransformType.BottomRightCut))
{
path.LineTo((float)desiredWidth, (float)(desiredHeight - bottomRightCornerSize));
path.LineTo((float)(desiredWidth - bottomRightCornerSize), (float)desiredHeight);
}
else if (cornersTransformType.HasFlag(CornerTransformType.BottomRightRounded))
{
path.LineTo((float)desiredWidth, (float)(desiredHeight - bottomRightCornerSize));
path.QuadTo((float)desiredWidth, (float)desiredHeight, (float)(desiredWidth - bottomRightCornerSize), (float)desiredHeight);
}
else
{
path.LineTo((float)desiredWidth, (float)desiredHeight);
}
// BottomLeft
if (cornersTransformType.HasFlag(CornerTransformType.BottomLeftCut))
{
path.LineTo((float)bottomLeftCornerSize, (float)desiredHeight);
path.LineTo(0, (float)(desiredHeight - bottomLeftCornerSize));
}
else if (cornersTransformType.HasFlag(CornerTransformType.BottomLeftRounded))
{
path.LineTo((float)bottomLeftCornerSize, (float)desiredHeight);
path.QuadTo(0, (float)desiredHeight, 0, (float)(desiredHeight - bottomLeftCornerSize));
}
else
{
path.LineTo(0, (float)desiredHeight);
}
path.Close();
canvas.DrawPath(path, paint);
return bitmap;
}
}
private void setup()
{
if (!mReady)
{
mSetupPending = true;
return;
}
if (mBitmap == null)
{
return;
}
mBitmapShader = new BitmapShader(mBitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp);
mBitmapPaint.AntiAlias = true;
mBitmapPaint.SetShader(mBitmapShader);
mBorderPaint.SetStyle(Paint.Style.Stroke);
mBorderPaint.AntiAlias = true;
mBorderPaint.Color = mBorderColor;
mBorderPaint.StrokeWidth = _borderWidth;
mBitmapHeight = mBitmap.Height;
mBitmapWidth = mBitmap.Width;
mBorderRect.Set(0, 0, this.Width, this.Height);
mBorderRadius = Java.Lang.Math.Min((mBorderRect.Height() - _borderWidth) / 2, (mBorderRect.Width() - _borderWidth) / 2);
mDrawableRect.Set(_borderWidth, _borderWidth, mBorderRect.Width() - _borderWidth, mBorderRect.Height() - _borderWidth);
mDrawableRadius = Java.Lang.Math.Min(mDrawableRect.Height() / 2, mDrawableRect.Width() / 2);
updateShaderMatrix();
Invalidate();
}