void ConfigureTransform(int viewWidth, int viewHeight)
{
if (textureView == null || previewSize == null || Context == null)
{
return;
}
SurfaceOrientation rotation = (Context as Activity).WindowManager.DefaultDisplay.Rotation;
Matrix matrix = new Matrix();
if (rotation == SurfaceOrientation.Rotation90 || rotation == SurfaceOrientation.Rotation270)
{
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, previewSize.Width, previewSize.Height);
bufferRect.Offset(viewRect.CenterX() - bufferRect.CenterX(), viewRect.CenterY() - bufferRect.CenterY());
float scaleH = (float)viewHeight / previewSize.Width;
float scaleW = scaleH * 4f / 3f * 4f / 3f;
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
matrix.PostRotate(90 * ((int)rotation - 2), viewRect.CenterX(), viewRect.CenterY());
matrix.PostScale(scaleW, scaleH, viewRect.CenterX(), viewRect.CenterY());
}
textureView.SetTransform(matrix);
}
/**
* 绘制人脸框。
*
*/
private void showFrame(ImageFrame imageFrame, FaceInfo[] faceInfos)
{
Canvas canvas = textureView.LockCanvas();
if (canvas == null)
{
textureView.UnlockCanvasAndPost(canvas);
return;
}
if (faceInfos == null || faceInfos.Length == 0)
{
// 清空canvas
canvas.DrawColor(Color.Transparent, PorterDuff.Mode.Clear);
textureView.UnlockCanvasAndPost(canvas);
return;
}
canvas.DrawColor(Color.Transparent, PorterDuff.Mode.Clear);
FaceInfo faceInfo = faceInfos[0];
rectF.Set(getFaceRect(faceInfo, imageFrame));
// 检测图片的坐标和显示的坐标不一样，需要转换。
previewView.mapFromOriginalRect(rectF);
float yaw = Math.Abs(faceInfo.HeadPose[0]);
float patch = Math.Abs(faceInfo.HeadPose[1]);
float roll = Math.Abs(faceInfo.HeadPose[2]);
if (yaw > 20 || patch > 20 || roll > 20)
{
// 不符合要求，绘制黄框
paint.Color = Color.Yellow;
String text = "请正视屏幕";
float width = paint.MeasureText(text) + 50;
float x = rectF.CenterX() - width / 2;
paint.Color = Color.Red;
paint.SetStyle(Paint.Style.Fill);
canvas.DrawText(text, x + 25, rectF.Top - 20, paint);
paint.Color = Color.Yellow;
}
else
{
// 符合检测要求，绘制绿框
paint.Color = Color.Green;
}
paint.SetStyle(Paint.Style.Stroke);
// 绘制框
canvas.DrawRect(rectF, paint);
textureView.UnlockCanvasAndPost(canvas);
}
protected override void OnDraw(Canvas canvas)
{
var rect = new RectF(0, 0, canvas.Width, canvas.Height);
var path = new Path();
path.MoveTo(rect.CenterX(), rect.CenterY());
path.AddArc(rect, _startAngle, _endAngle - _startAngle);
path.LineTo(rect.CenterX(), rect.CenterY());
path.Close();
canvas.ClipPath(path);
base.OnDraw(canvas);
}
// Configures the necessary {@link android.graphics.Matrix}
// transformation to `mTextureView`.
// This method should be called after the camera preview size is determined in
// setUpCameraOutputs and also the size of `mTextureView` is fixed.
public void ConfigureTransform(int viewWidth, int viewHeight)
{
Activity activity = Activity;
if (null == mTextureView || null == mPreviewSize || null == activity)
{
return;
}
var rotation = (int)activity.WindowManager.DefaultDisplay.Rotation;
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, mPreviewSize.Height, mPreviewSize.Width);
float centreX = viewRect.CenterX();
float centreY = viewRect.CenterY();
switch (rotation)
{
case (int)SurfaceOrientation.Rotation90:
case (int)SurfaceOrientation.Rotation270:
{
bufferRect.Offset(centreX - bufferRect.CenterX(), centreY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
float scale = Math.Max((float)viewHeight / mPreviewSize.Height, (float)viewWidth / mPreviewSize.Width);
matrix.PostScale(scale, scale, centreX, centreY);
matrix.PostRotate(90 * (rotation - 2), centreX, centreY);
break;
}
case (int)SurfaceOrientation.Rotation180:
matrix.PostRotate(180, centreX, centreY);
break;
}
mTextureView.SetTransform(matrix);
}
//UPDATE: Return text limit
private float DrawText(Canvas canvas, Paint paint,
string text, Paint.Align align, Color color, float offset,
RectF holderRect, Rect textRect)
{
paint.Color = color;
paint.TextAlign = align;
paint.GetTextBounds(text, 0, text.Length, textRect);
var textWidth = paint.MeasureText(text, 0, text.Length);
float textLimitX = -1;
float x = 0.0f;
if (align == Paint.Align.Left) //Draw startText
{
x = offset;
textLimitX = x + textWidth;
}
else if (align == Paint.Align.Center)
{
x = holderRect.CenterX();
}
else if (align == Paint.Align.Right) //Draw endText
{
x = holderRect.Right - offset;
textLimitX = x - textWidth;
}
var y = holderRect.CenterY() + textRect.Height() / 2f - textRect.Bottom;
canvas.DrawText(text.ToCharArray(), 0, text.Length, x, y, paint);
return(textLimitX);
}
private void configureTransform(int viewWidth, int viewHeight)
{
if (null == textureView || null == previewSize || null == context)
{
return;
}
int rotation = orientation;
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, previewSize.Height, previewSize.Width);
float centerX = viewRect.CenterX();
float centerY = viewRect.CenterY();
//if ( Surface.ROTATION_90 == rotation || Surface.ROTATION_270 == rotation)
//{
// bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
// matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
// float scale = Java.Lang.Math.Max(
// (float)viewHeight / previewSize.Height,
// (float)viewWidth / previewSize.Width);
// matrix.PostScale(scale, scale, centerX, centerY);
// matrix.PostRotate(90 * (rotation - 2), centerX, centerY);
//}
//else if (Surface.ROTATION_180 == rotation)
//{
// matrix.PostRotate(180, centerX, centerY);
//}
textureView.SetTransform(matrix);
}
/// <summary>
/// Configures the necessary transformation to mTextureView.
/// This method should be called after the camera preciew size is determined in openCamera, and also the size of mTextureView is fixed
/// </summary>
/// <param name="viewWidth">The width of mTextureView</param>
/// <param name="viewHeight">VThe height of mTextureView</param>
public void ConfigureTransform(int viewWidth, int viewHeight)
{
Activity activity = Activity;
if (textureView == null || mPreviewSize == null || activity == null)
{
return;
}
SurfaceOrientation rotation = activity.WindowManager.DefaultDisplay.Rotation;
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, mPreviewSize.Width, mPreviewSize.Height);
float centerX = viewRect.CenterX();
float centerY = viewRect.CenterY();
if (rotation == SurfaceOrientation.Rotation90 || rotation == SurfaceOrientation.Rotation270)
{
bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
float scale = System.Math.Max((float)viewHeight / mPreviewSize.Height, (float)viewWidth / mPreviewSize.Width);
matrix.PostScale(scale, scale, centerX, centerY);
matrix.PostRotate(90 * ((int)rotation - 2), centerX, centerY);
}
textureView.SetTransform(matrix);
}
private void ConfigureTransform(int viewWidth, int viewHeight)
{
if (this.SurfaceTexture == null || previewSize == null || this.Context == null)
{
return;
}
var windowManager = Context.GetSystemService(Context.WindowService).JavaCast <IWindowManager>();
var rotation = windowManager.DefaultDisplay.Rotation;
var matrix = new Matrix();
var viewRect = new RectF(0, 0, viewWidth, viewHeight);
var bufferRect = new RectF(0, 0, previewSize.Width, previewSize.Height);
var centerX = viewRect.CenterX();
var centerY = viewRect.CenterY();
if (rotation == SurfaceOrientation.Rotation90 || rotation == SurfaceOrientation.Rotation270)
{
bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
matrix.PostRotate(90 * ((int)rotation - 2), centerX, centerY);
}
this.SetTransform(matrix);
}
// Configures the necessary {@link android.graphics.Matrix}
// transformation to `mTextureView`.
// This method should be called after the camera preview size is determined in
// setUpCameraOutputs and also the size of `mTextureView` is fixed.
public void ConfigureTransform(int viewWidth, int viewHeight)
{
Activity activity = Activity;
if (null == _textureView || null == _previewSize || null == activity)
{
return;
}
var rotation = (int)activity.WindowManager.DefaultDisplay.Rotation;
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, _previewSize.Height, _previewSize.Width);
float centerX = viewRect.CenterX();
float centerY = viewRect.CenterY();
if (rotation == (int)SurfaceOrientation.Rotation90 || rotation == (int)SurfaceOrientation.Rotation270)
{
bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
float scale = JMath.Max((float)viewHeight / _previewSize.Height, (float)viewWidth / _previewSize.Width);
matrix.PostScale(scale, scale, centerX, centerY);
matrix.PostRotate(90 * (rotation - 2), centerX, centerY);
}
else if (rotation == (int)SurfaceOrientation.Rotation180)
{
matrix.PostRotate(180, centerX, centerY);
}
_textureView.SetTransform(matrix);
}
public void ConfigureTransform(int viewWidth, int viewHeight)
{
//var activity = (Activity)_context;
if (null == _surfaceView || null == _previewSize || null == _context)
{
return;
}
var windowManager = _context
.GetSystemService(Context.WindowService).JavaCast <IWindowManager>();
;
var rotation = (int)windowManager.DefaultDisplay.Rotation;
var matrix = new Matrix();
var viewRect = new RectF(0, 0, viewWidth, viewHeight);
var bufferRect = new RectF(0, 0, _previewSize.Height, _previewSize.Width);
var centerX = viewRect.CenterX();
var centerY = viewRect.CenterY();
if ((int)SurfaceOrientation.Rotation90 == rotation || (int)SurfaceOrientation.Rotation270 == rotation)
{
bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
var scale = Math.Max((float)viewHeight / _previewSize.Height, (float)viewWidth / _previewSize.Width);
matrix.PostScale(scale, scale, centerX, centerY);
matrix.PostRotate(90 * (rotation - 2), centerX, centerY);
}
else if ((int)SurfaceOrientation.Rotation180 == rotation)
{
matrix.PostRotate(180, centerX, centerY);
}
_surfaceView.SetTransform(matrix);
}
public void ConfigureTransform(int viewWidth, int viewHeight)
{
if (null == mTextureView || null == mPreviewSize)
{
return;
}
var windowManager = Context.GetSystemService(Context.WindowService).JavaCast <IWindowManager>();
var rotation = (int)windowManager.DefaultDisplay.Rotation;
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, mPreviewSize.Height, mPreviewSize.Width);
float centerX = viewRect.CenterX();
float centerY = viewRect.CenterY();
if ((int)SurfaceOrientation.Rotation90 == rotation || (int)SurfaceOrientation.Rotation270 == rotation)
{
bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
float scale = Java.Lang.Math.Max((float)viewHeight / mPreviewSize.Height, (float)viewWidth / mPreviewSize.Width);
matrix.PostScale(scale, scale, centerX, centerY);
matrix.PostRotate(90 * (rotation - 2), centerX, centerY);
}
else if ((int)SurfaceOrientation.Rotation180 == rotation)
{
matrix.PostRotate(180, centerX, centerY);
}
mTextureView.SetTransform(matrix);
}
// Configures the necessary matrix
// transformation to `surfaceTextureView`.
// This method should be called after the camera preview size is determined in
// setUpCameraOutputs and also the size of `surfaceTextureView` is fixed.
public void ConfigureTransform(int viewWidth, int viewHeight)
{
if (null == surfaceTextureView || null == previewSize)
{
return;
}
var rotation = (int)WindowManager.DefaultDisplay.Rotation;
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, previewSize.Height, previewSize.Width);
float centerX = viewRect.CenterX();
float centerY = viewRect.CenterY();
if ((int)SurfaceOrientation.Rotation90 == rotation || (int)SurfaceOrientation.Rotation270 == rotation)
{
bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
float scale = Math.Max((float)viewHeight / previewSize.Height, (float)viewWidth / previewSize.Width);
matrix.PostScale(scale, scale, centerX, centerY);
matrix.PostRotate(90 * (rotation - 2), centerX, centerY);
}
else if ((int)SurfaceOrientation.Rotation180 == rotation)
{
matrix.PostRotate(180, centerX, centerY);
}
surfaceTextureView.SetTransform(matrix);
}
// Configures the necessary {@link android.graphics.Matrix}
// transformation to `mTextureView`.
// This method should be called after the camera preview size is determined in
// setUpCameraOutputs and also the size of `mTextureView` is fixed.
public void ConfigureTransform(int viewWidth, int viewHeight)
{
var activity = MainActivity.context;
if (null == mTextureView || null == mPreviewSize || null == activity)
{
return;
}
var rotation = (int)activity.WindowManager.DefaultDisplay.Rotation;
var matrix = new Matrix();
var viewRect = new RectF(0, 0, viewWidth, viewHeight);
var bufferRect = new RectF(0, 0, mPreviewSize.Height, mPreviewSize.Width);
var centerX = viewRect.CenterX();
var centerY = viewRect.CenterY();
if ((int)SurfaceOrientation.Rotation90 == rotation || (int)SurfaceOrientation.Rotation270 == rotation)
{
bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
var scale = Math.Max((float)viewHeight / mPreviewSize.Height, (float)viewWidth / mPreviewSize.Width);
matrix.PostScale(scale, scale, centerX, centerY);
matrix.PostRotate(90 * (rotation - 2), centerX, centerY);
}
else if ((int)SurfaceOrientation.Rotation180 == rotation)
{
matrix.PostRotate(180, centerX, centerY);
}
mTextureView.SetTransform(matrix);
}
public void configureTransform(int viewWidth, int viewHeight)
{
if (null == this || null == previewSize || null == activity.textureView)
{
return;
}
int rotation = (int)activity.WindowManager.DefaultDisplay.Rotation;
var matrix = new Matrix();
var viewRect = new RectF(0, 0, viewWidth, viewHeight);
var bufferRect = new RectF(0, 0, previewSize.Height, previewSize.Width);
float centerX = viewRect.CenterX();
float centerY = viewRect.CenterY();
if ((int)SurfaceOrientation.Rotation90 == rotation || (int)SurfaceOrientation.Rotation270 == rotation)
{
bufferRect.Offset((centerX - bufferRect.CenterX()), (centerY - bufferRect.CenterY()));
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
float scale = System.Math.Max(
(float)viewHeight / previewSize.Height,
(float)viewHeight / previewSize.Width);
matrix.PostScale(scale, scale, centerX, centerY);
matrix.PostRotate(90 * (rotation - 2), centerX, centerY);
}
else if ((int)SurfaceOrientation.Rotation180 == rotation)
{
matrix.PostRotate(180, centerX, centerY);
}
activity.textureView.SetTransform(matrix);
}
private void ConfigureTransform(int viewWidth, int viewHeight, int previewWidth, int previewHeight)
{
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, previewWidth, previewHeight);
float centerX = viewRect.CenterX();
float centerY = viewRect.CenterY();
bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
float verticalScale = (float)viewHeight / previewHeight;
//float horizontalScale = (float)viewWidth / previewWidth;
//float scale = Math.Min(verticalScale, horizontalScale);
////this.tracer.Debug("ConfigureTransform: verticalScale={0}", verticalScale);
////this.tracer.Debug("ConfigureTransform: horizontalScale={0}", horizontalScale);
////this.tracer.Debug("ConfigureTransform: scale={0}", scale);
////this.tracer.Debug("ConfigureTransform: centerX={0}", centerX);
////this.tracer.Debug("ConfigureTransform: centerY={0}", centerY);
matrix.PostScale(verticalScale, verticalScale, centerX, centerY);
//matrix.PostRotate(90 * ((int)this.Rotation - 2), centerX, centerY);
this.SetTransform(matrix);
}
private void drawAlphaPanel(Canvas canvas)
{
/*
* Will be drawn with hw acceleration, very fast.
*/
if (!mShowAlphaPanel || mAlphaRect == null || mAlphaPattern == null)
{
return;
}
RectF rect = mAlphaRect;
if (BORDER_WIDTH_PX > 0)
{
//TODO: cross check the color
byte[] byteArr = BitConverter.GetBytes(mBorderColor);
mBorderPaint.Color = Color.Argb(byteArr[0], byteArr[1], byteArr[2], byteArr[3]);
// mBorderPaint.Color = mBorderColor;
canvas.DrawRect(rect.Left - BORDER_WIDTH_PX,
rect.Top - BORDER_WIDTH_PX,
rect.Right + BORDER_WIDTH_PX,
rect.Bottom + BORDER_WIDTH_PX,
mBorderPaint);
}
mAlphaPattern.Draw(canvas);
float[] hsv = new float[] { mHue, mSat, mVal };
Color color = Color.HSVToColor(hsv);
Color acolor = Color.HSVToColor(0, hsv);
mAlphaShader = new LinearGradient(rect.Left, rect.Top, rect.Right, rect.Top,
color, acolor, Android.Graphics.Shader.TileMode.Clamp);
mAlphaPaint.SetShader(mAlphaShader);
canvas.DrawRect(rect, mAlphaPaint);
if (mAlphaSliderText != null && !mAlphaSliderText.Equals(""))
{
canvas.DrawText(mAlphaSliderText, rect.CenterX(), rect.CenterY() + 4 * mDensity, mAlphaTextPaint);
}
float rectWidth = 4 * mDensity / 2;
Point p = alphaToPoint(mAlpha);
RectF r = new RectF();
r.Left = p.X - rectWidth;
r.Right = p.X + rectWidth;
r.Top = rect.Top - RECTANGLE_TRACKER_OFFSET;
r.Bottom = rect.Bottom + RECTANGLE_TRACKER_OFFSET;
canvas.DrawRoundRect(r, 2, 2, mHueAlphaTrackerPaint);
}
/// <summary>
/// Configures the necessary transformation to autoFitTextureView.
/// This method should be called after the camera preciew size is determined in openCamera, and also the size of
/// autoFitTextureView is fixed
/// </summary>
/// <param name="viewWidth">The width of autoFitTextureView</param>
/// <param name="viewHeight">VThe height of autoFitTextureView</param>
private void ConfigureTransform(int viewWidth, int viewHeight)
{
Activity activity = this.Activity;
if (this.autoFitTextureView == null || this.previewSize == null || activity == null)
{
this.tracer.Debug("ConfigureTransform: Could not perform transformation.");
return;
}
SurfaceOrientation rotation = activity.WindowManager.DefaultDisplay.Rotation;
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, this.previewSize.Width, this.previewSize.Height);
float centerX = viewRect.CenterX();
float centerY = viewRect.CenterY();
if (rotation == SurfaceOrientation.Rotation90 || rotation == SurfaceOrientation.Rotation270)
{
bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
float verticalScale = (float)viewHeight / this.previewSize.Height;
float horizontalScale = (float)viewWidth / this.previewSize.Width;
float scale = Math.Max(verticalScale, horizontalScale);
matrix.PostScale(scale, scale, centerX, centerY);
matrix.PostRotate(90 * ((int)rotation - 2), centerX, centerY);
}
this.autoFitTextureView.SetTransform(matrix);
}
/// <summary>
/// Configures the transform.
/// </summary>
/// <param name="viewWidth">View width.</param>
/// <param name="viewHeight">View height.</param>
public void ConfigureTransform(int viewWidth, int viewHeight)
{
if (_viewSurface != null && _previewSize != null && _context != null)
{
var windowManager = _context.GetSystemService(Context.WindowService).JavaCast <IWindowManager>();
var rotation = windowManager.DefaultDisplay.Rotation;
var matrix = new Matrix();
var viewRect = new RectF(0, 0, viewWidth, viewHeight);
var bufferRect = new RectF(0, 0, _previewSize.Width, _previewSize.Height);
var centerX = viewRect.CenterX();
var centerY = viewRect.CenterY();
if (rotation == SurfaceOrientation.Rotation90 || rotation == SurfaceOrientation.Rotation270)
{
bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
var scale = System.Math.Max((float)viewHeight / _previewSize.Height, (float)viewWidth / _previewSize.Width);
matrix.PostScale(scale, scale, centerX, centerY);
matrix.PostRotate(90 * ((int)rotation - 2), centerX, centerY);
}
_cameraTexture.SetTransform(matrix);
}
}
private void ConfigureTransform(int requestWidth, int requestHeight)
{
var viewRect = new RectF(0, 0, requestHeight, requestWidth);
var bufferRect = new RectF(0, 0, PixelSize.Height, PixelSize.Width);
var centerX = viewRect.CenterX();
var centerY = viewRect.CenterY();
if ((int)SurfaceOrientation.Rotation90 == _rotation || (int)SurfaceOrientation.Rotation270 == _rotation)
{
Transform.TranslateX = centerX - bufferRect.CenterX();
Transform.TranslateY = centerY - bufferRect.CenterY();
var scale = Math.Max((float)requestWidth / PixelSize.Height, (float)requestHeight / PixelSize.Width);
Transform.ScaleX = scale;
Transform.ScaleY = scale;
Transform.ScalePivotX = centerX;
Transform.ScalePivotY = centerY;
Transform.RotateDegrees = 90 * (_rotation - 2);
Transform.RotatePivotX = centerX;
Transform.RotatePivotY = centerY;
}
else if ((int)SurfaceOrientation.Rotation180 == _rotation)
{
Transform.RotateDegrees = 180;
Transform.RotatePivotX = centerX;
Transform.RotatePivotY = centerY;
}
}
// Resizing Behavior
public static void resizingBehaviorApply(ResizingBehavior behavior, RectF rect, RectF target, RectF result)
{
if (rect.Equals(target) || target == null)
{
result.Set(rect);
return;
}
if (behavior == ResizingBehavior.Stretch)
{
result.Set(target);
return;
}
float xRatio = Math.Abs(target.Width() / rect.Width());
float yRatio = Math.Abs(target.Height() / rect.Height());
float scale = 0f;
switch (behavior)
{
case ResizingBehavior.AspectFit:
{
scale = Math.Min(xRatio, yRatio);
break;
}
case ResizingBehavior.AspectFill:
{
scale = Math.Max(xRatio, yRatio);
break;
}
case ResizingBehavior.Center:
{
scale = 1f;
break;
}
}
float newWidth = Math.Abs(rect.Width() * scale);
float newHeight = Math.Abs(rect.Height() * scale);
result.Set(target.CenterX() - newWidth / 2,
target.CenterY() - newHeight / 2,
target.CenterX() + newWidth / 2,
target.CenterY() + newHeight / 2);
}
/// <summary>
/// Draw the current orientation on the canvas
/// </summary>
/// <param name="c">The canvas</param>
protected void DrawOrientation(Canvas c)
{
// TODO: If no orientation is available, don't draw
// If the current location is out of bound, don't draw
if (!this.IsOnMap(this.CurrentRDLocation))
{
return;
}
// Determine the position of the CurrentLocation on the screen
float x = (this.RD2Bitmap(this.CurrentRDLocation).X + this.MapOffsetX) * this.MapScale + this.Width / 2;
float y = (this.RD2Bitmap(this.CurrentRDLocation).Y + this.MapOffsetY) * this.MapScale + this.Height / 2;
// Calculate all the orientation triangle dimensions
float TriangleWidth = this.LocationRadius * 1.8f;
float TriangleHeight = this.LocationRadius * 1f;
float TriangleOffset = TriangleHeight * 0.2f;
float TriangleBottomLeftX = x - TriangleWidth / 2;
float TriangleBottomRightX = x + TriangleWidth / 2;
float TriangleTopX = x;
float TriangleBottomY = y + this.LocationRadius + TriangleOffset;
float TriangleTopY = TriangleBottomY + TriangleHeight;
Path path = new Path();
path.MoveTo(TriangleBottomLeftX, TriangleBottomY);
path.LineTo(TriangleTopX, TriangleTopY);
path.LineTo(TriangleBottomRightX, TriangleBottomY);
path.LineTo(TriangleBottomLeftX, TriangleBottomY);
path.Close();
Paint z = new Paint();
z.SetStyle(Paint.Style.Fill);
z.Color = new Color(68, 94, 224);
// Rotate the triangle the right way
Matrix m = new Matrix();
RectF b = new RectF();
path.ComputeBounds(b, true);
b.Top -= TriangleOffset * 2 + TriangleHeight + this.LocationRadius * 2;
float HeightWidthDifference = b.Height() - b.Width();
b.Left -= HeightWidthDifference / 2;
b.Right += HeightWidthDifference / 2;
// Draw orientation
m.PostRotate(this.CurrentLocationRotation - 180, b.CenterX(), b.CenterY());
path.Transform(m);
c.DrawPath(path, z);
}
public bool OnTouch(View v, MotionEvent ev)
{
bool handled = false;
if (mZoomEnabled && HasDrawable((ImageView)v))
{
IViewParent parent = v.Parent;
switch (ev.Action)
{
case MotionEventActions.Down:
// First, disable the Parent from intercepting the touch
// event
if (null != parent)
{
parent.RequestDisallowInterceptTouchEvent(true);
}
else
{
Log.Info(LOG_TAG, "onTouch getParent() returned null");
}
// If we're flinging, and the user presses down, cancel
// fling
CancelFling();
break;
case MotionEventActions.Cancel:
case MotionEventActions.Up:
// If the user has zoomed less than min scale, zoom back
// to min scale
if (GetScale() < mMinScale)
{
RectF rect = GetDisplayRect();
if (null != rect)
{
v.Post(new AnimatedZoomRunnable(this, GetScale(), mMinScale,
rect.CenterX(), rect.CenterY()));
handled = true;
}
}
break;
}
// Try the Scale/Drag detector
if (null != mScaleDragDetector &&
mScaleDragDetector.OnTouchEvent(ev))
{
handled = true;
}
// Check to see if the user double tapped
if (null != mGestureDetector && mGestureDetector.OnTouchEvent(ev))
{
handled = true;
}
}
return(handled);
}
private void RenderBack(Canvas canvas)
{
var Path = new Path();
var viewRadius = GetViewRadius();
Path.AddCircle(drawingArea.CenterX(), drawingArea.CenterY(), viewRadius, Path.Direction.Ccw);
canvas.DrawPath(Path, backStrokePaint);
}
public void GetCenterPoint(out float x, out float y)
{
float ox = -(translate.X / zoom);
float oy = -(translate.Y / zoom);
var rect = new RectF(ox, oy, ((float)this.SurfaceWidth / zoom) + ox, ((float)this.SurfaceHeight / zoom) + oy);
x = rect.CenterX();
y = rect.CenterY();
}
private static BitmapDrawable GetCircleForProgress()
{
var conf = Bitmap.Config.Argb4444;
if (_progressImage == null)
{
_progressImage = Bitmap.CreateBitmap(_windowSize.Width, _windowSize.Height, conf);
}
var canvas = new Canvas(_progressImage);
var paint = new Paint();
paint.SetStyle(Paint.Style.Stroke);
paint.StrokeWidth = 3;
paint.AntiAlias = true;
paint.Color = _colorToUse;
canvas.DrawPaint(new Paint()
{
Color = Android.Graphics.Color.White
});
if (Progress > 20)
{
_activity.RunOnUiThread(() =>
{
var ll = _layoutCenter.LayoutParameters;
if (ll.Height != _windowSize.Height)
{
ll.Height = _windowSize.Height;
_layoutCenter.LayoutParameters = ll;
_layoutCenter.RequestFocus();
}
});
canvas.DrawBitmap(_car, _zoneCircle.CenterX() - _car.Width / 2f, _zoneCircle.CenterY() - _car.Height / 2f, null);
var startAngle = -90f;
var sweepingAngle = ((Progress - 20f) / 80f) * 360f;
canvas.DrawArc(_zoneCircle, startAngle, sweepingAngle, false, paint);
}
else
{
_activity.RunOnUiThread(() =>
{
var ll = _layoutCenter.LayoutParameters;
ll.Height = (int)(((float)Progress / 20f) * _windowSize.Height);
_layoutCenter.LayoutParameters = ll;
_layoutCenter.RequestLayout();
});
}
_layoutCenter.RequestLayout();
return(new BitmapDrawable(_progressImage));
}
private void DrawText(String text, Canvas c, RectF button, Paint p)
{
float textSize = 60;
p.Color = Color.White;
p.AntiAlias = true;
p.TextSize = textSize;
float textWidth = p.MeasureText(text);
c.DrawText(text, button.CenterX() - (textWidth / 2), button.CenterY() + (textSize / 2), p);
}
protected override void OnBoundsChange(Rect bounds)
{
base.OnBoundsChange(bounds);
mRect.Set(margin, margin, bounds.Width() - margin, bounds.Height() - margin);
if (useGradientOverlay)
{
var colors = new int[] { 0, 0, 0x7f000000 };
var pos = new float[] { 0.0f, 0.7f, 1.0f };
RadialGradient vignette = new RadialGradient(mRect.CenterX(),
mRect.CenterY() * 1.0f / 0.7f,
mRect.CenterX() * 1.3f,
colors,
pos, Shader.TileMode.Clamp);
Matrix oval = new Matrix();
oval.SetScale(1.0f, 0.7f);
vignette.SetLocalMatrix(oval);
paint.SetShader(new ComposeShader(bitmapShader, vignette, PorterDuff.Mode.SrcOver));
}
}
protected override void OnDraw(Canvas canvas)
{
if (mDisableCircularTransformation)
{
base.OnDraw(canvas);
return;
}
if (mBitmap == null)
{
return;
}
if (mFillColor != Color.Transparent)
{
canvas.DrawCircle(mDrawableRect.CenterX(), mDrawableRect.CenterY(), mDrawableRadius, mFillPaint);
}
canvas.DrawCircle(mDrawableRect.CenterX(), mDrawableRect.CenterY(), mDrawableRadius, mBitmapPaint);
if (mBorderWidth > 0)
{
canvas.DrawCircle(mBorderRect.CenterX(), mBorderRect.CenterY(), mBorderRadius, mBorderPaint);
}
}
private void ConfigureTransform(int viewWidth, int viewHeight, int previewWidth, int previewHeight)
{
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, previewWidth, previewHeight);
float centerX = viewRect.CenterX();
float centerY = viewRect.CenterY();
bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
float verticalScale = (float)viewHeight / previewHeight;
matrix.PostScale(verticalScale, verticalScale, centerX, centerY);
SetTransform(matrix);
}
public Transition(RectF srcRect, RectF dstRect, long duration, IInterpolator interpolator)
{
if (!MathUtils.HaveSameAspectRatio(srcRect, dstRect))
{
throw new IncompatibleRatioException();
}
_mSrcRect = srcRect;
_mDstRect = dstRect;
_mDuration = duration;
_mInterpolator = interpolator;
// Precomputes a few variables to avoid doing it in onDraw().
_mWidthDiff = dstRect.Width() - srcRect.Width();
_mHeightDiff = dstRect.Height() - srcRect.Height();
_mCenterXDiff = dstRect.CenterX() - srcRect.CenterX();
_mCenterYDiff = dstRect.CenterY() - srcRect.CenterY();
}