private Android.Graphics.Bitmap rotateMyBitmap(Android.Graphics.Bitmap bmp)
{
//*****旋转一下
Android.Graphics.Matrix matrix = new Android.Graphics.Matrix();
matrix.PostRotate(270);
Android.Graphics.Bitmap nbmp2 = Android.Graphics.Bitmap.CreateBitmap(bmp, 0, 0, bmp.Width, bmp.Height, matrix, true);
bmp.Dispose();
return(nbmp2);
}
public static Bitmap ToRotated(Bitmap source, double degrees, bool ccw, bool resize)
{
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)
{
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 static Bitmap CreateBitmap(Texture2D image, Vector2 scale, float rotation, Vector2 origin)
{
Matrix matrix = new Matrix();
matrix.PostScale(scale.X, scale.Y);
matrix.PostRotate(rotation, origin.X, origin.Y);
Bitmap source = Texture2D2Bitmap(image);
Bitmap newBitmap = Bitmap.CreateBitmap(source, 0, 0, source.Width, source.Height, matrix, true);
return(newBitmap);
}
public bool ReadFile(String fileName, Mat mat, CvEnum.ImreadModes loadType)
{
try
{
int rotation = 0;
Android.Media.ExifInterface exif = new Android.Media.ExifInterface(fileName);
int orientation = exif.GetAttributeInt(Android.Media.ExifInterface.TagOrientation, int.MinValue);
switch (orientation)
{
case (int)Android.Media.Orientation.Rotate270:
rotation = 270;
break;
case (int)Android.Media.Orientation.Rotate180:
rotation = 180;
break;
case (int)Android.Media.Orientation.Rotate90:
rotation = 90;
break;
}
using (Android.Graphics.Bitmap bmp = Android.Graphics.BitmapFactory.DecodeFile(fileName))
{
if (rotation == 0)
{
bmp.ToMat(mat);
}
else
{
Android.Graphics.Matrix matrix = new Android.Graphics.Matrix();
matrix.PostRotate(rotation);
using (Android.Graphics.Bitmap rotated = Android.Graphics.Bitmap.CreateBitmap(bmp, 0, 0, bmp.Width, bmp.Height, matrix, true))
{
//manually disposed sooner such that memory is released.
bmp.Dispose();
rotated.ToMat(mat);
}
}
}
return(true);
}
catch (Exception e)
{
Debug.WriteLine(e);
//throw;
return(false);
}
}
public static Matrix parseTransformRotate(String pString) {
var start = SVGConstants.ATTRIBUTE_TRANSFORM_VALUE_ROTATE.Length + 1;
var svgNumberParserFloatResult = pString.Substring(start, pString.IndexOf(')') - start).ParseFloats ();
SVGTransformParser.assertNumberParserResultNumberCountMinimum(svgNumberParserFloatResult, 1);
float angle = svgNumberParserFloatResult[0];
float cx = 0;
float cy = 0;
if (svgNumberParserFloatResult.Length > 2) {
cx = svgNumberParserFloatResult[1];
cy = svgNumberParserFloatResult[2];
}
Matrix matrix = new Matrix();
matrix.PostTranslate(cx, cy);
matrix.PostRotate(angle);
matrix.PostTranslate(-cx, -cy);
return matrix;
}
public Matrix GetRotateMatrix()
{
// By default this is an identity matrix.
Matrix matrix = new Matrix();
if (Rotation != 0)
{
// We want to do the rotation at origin, but since the bounding
// rectangle will be changed after rotation, so the delta values
// are based on old & new width/height respectively.
int cx = Bitmap.Width / 2;
int cy = Bitmap.Height / 2;
matrix.PreTranslate(-cx, -cy);
matrix.PostRotate(Rotation);
matrix.PostTranslate(Width / 2, Height / 2);
}
return matrix;
}
public void OnPictureTaken(byte[] data, Android.Hardware.Camera camera)
{
camera.StopPreview();
camera.Release();
previewing = false;
isPhotoTaken = true;
photo = BitmapFactory.DecodeByteArray(data, 0, data.Length);
Matrix matrix = new Matrix();
matrix.PostRotate(90);
photo = Bitmap.CreateBitmap(photo, 0, 0, photo.Width, photo.Height, matrix, true);
surfaceView.Visibility = ViewStates.Invisible;
acceptButton.Visibility = ViewStates.Visible;
cancelButton.Visibility = ViewStates.Visible;
imageView.Visibility = ViewStates.Visible;
buttonLayout.SetBackgroundColor(Color.ParseColor("#80000000"));
imageView.SetImageBitmap(photo);
}
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;
matrix.PostRotate(rotationDegrees);
canvas.DrawBitmap(sourceBitmap, matrix, paint);
}
if (sourceBitmap != null && sourceBitmap.Handle != IntPtr.Zero && !sourceBitmap.IsRecycled)
{
sourceBitmap.Recycle();
sourceBitmap.Dispose();
}
return bitmap;
}
private static Bitmap RotateImage(string filePath, int rotation)
{
Bitmap originalImage = BitmapFactory.DecodeFile(filePath);
Matrix matrix = new Matrix();
matrix.PostRotate(rotation);
var rotatedImage = Bitmap.CreateBitmap(originalImage, 0, 0, originalImage.Width, originalImage.Height, matrix, true);
originalImage.Recycle();
return rotatedImage;
}
//Configures the neccesary matrix transformation to apply to the textureView
public void configureTransform(int viewWidth, int viewHeight)
{
if (null == Activity || null == previewSize || null == 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);
}
textureView.SetTransform (matrix);
}
protected override void OnDraw(Canvas canvas)
{
coreX = Width / 2;
coreY = Height / 2;
roundRadius = (int)(Width / 2 * radiusDistance); //计算中心圆圈半径
RectF rect = new RectF(0, 0, Width, Height);
if (roundMenus != null && roundMenus.Count > 0)
{
float sweepAngle = 360 / roundMenus.Count; //每个弧形的角度
deviationDegree = sweepAngle / 2; //其实的偏移角度，如果4个扇形的时候是X形状，而非+,设为0试试就知道什么意思了
for (int i = 0; i < roundMenus.Count; i++)
{
RoundMenu roundMenu = roundMenus[i];
//填充
Paint paint = new Paint();
paint.AntiAlias = true;
if (onClickState == i)
{
//选中
paint.Color = new Color(roundMenu.selectSolidColor);
}
else
{
//未选中
paint.Color = new Color(roundMenu.solidColor);
}
canvas.DrawArc(rect, deviationDegree + (i * sweepAngle), sweepAngle, true, paint);
//画描边
paint = new Paint();
paint.AntiAlias = true;
paint.StrokeWidth = roundMenu.strokeSize;
paint.SetStyle(Paint.Style.Stroke);
paint.Color = new Color(roundMenu.strokeColor);
canvas.DrawArc(rect, deviationDegree + (i * sweepAngle), sweepAngle, roundMenu.useCenter, paint);
//画图案
Matrix matrix = new Matrix();
matrix.PostTranslate((float)((coreX + Width / 2 * roundMenu.iconDistance) - (roundMenu.icon.Width / 2)), coreY - (roundMenu.icon.Height / 2));
matrix.PostRotate(((i + 1) * sweepAngle), coreX, coreY);
canvas.DrawBitmap(roundMenu.icon, matrix, null);
}
}
//画中心圆圈
if (isCoreMenu)
{
//填充
RectF rect1 = new RectF(coreX - roundRadius, coreY - roundRadius, coreX + roundRadius, coreY + roundRadius);
Paint paint = new Paint();
paint.AntiAlias = true;
paint.StrokeWidth = coreMenuStrokeSize;
if (onClickState == -1)
{
paint.Color = new Color(coreMenuSelectColor);
}
else
{
paint.Color = new Color(coreMenuColor);
}
canvas.DrawArc(rect1, 0, 360, true, paint);
//画描边
paint = new Paint();
paint.AntiAlias = true;
paint.StrokeWidth = coreMenuStrokeSize;
paint.SetStyle(Paint.Style.Stroke);
paint.Color = new Color(coreMenuStrokeColor);
canvas.DrawArc(rect1, 0, 360, true, paint);
if (coreBitmap != null)
{
//画中心圆圈的"OK"图标
canvas.DrawBitmap(coreBitmap, coreX - coreBitmap.Width / 2, coreY - coreBitmap.Height / 2, null); //在 0，0坐标开始画入src
}
}
}
/// Author: Guy Spronck
/// Date: 09-06-2015
/// <summary>
/// Rotates the bitmap.
/// </summary>
/// <returns>The bitmap.</returns>
/// <param name="source">Source.</param>
/// <param name="angle">Angle.</param>
public Bitmap RotateBitmap(Bitmap source, float angle)
{
Matrix matrix = new Matrix();
matrix.PostRotate (angle);
return Bitmap.CreateBitmap(source, 0, 0, source.Width, source.Height, matrix, true);
}
protected override void OnActivityResult(int requestCode, Result resultCode, Intent data)
{
base.OnActivityResult(requestCode, resultCode, data);
if ((resultCode == Result.Ok) && (data != null))
{
if (requestCode == PickImageId)
{
Uri uri = data.Data;
Bitmap tempBitmap = BitmapFactory.DecodeFile(GetPathToImage(uri));
//resize
int newHeight = ConvertDptoPx(60);
int newWidth = (int) (((float) tempBitmap.Width) / ((float) tempBitmap.Height) * newHeight);
//scale
float scaleWidth = ((float) newWidth) / tempBitmap.Width;
float scaleHeight = ((float) newHeight) / tempBitmap.Height;
Matrix matrix = new Matrix();
matrix.PostScale(scaleWidth, scaleHeight);
//rotate
ExifInterface exif = new ExifInterface(GetPathToImage(uri));
int orientation = exif.GetAttributeInt(ExifInterface.TagOrientation, 1);
switch (orientation)
{
case 3:
matrix.PostRotate(180);
break;
case 6:
matrix.PostRotate(90);
break;
case 8:
matrix.PostRotate(270);
break;
}
_bitmap = Bitmap.CreateBitmap(tempBitmap, 0, 0, tempBitmap.Width, tempBitmap.Height, matrix, false);
tempBitmap.Recycle();
_imageView.SetImageBitmap(_bitmap);
}
else if (requestCode == PickContactsId)
{
_participantsAdapter.Items.Clear();
string intentString = data.GetStringExtra("New participants");
if (intentString != string.Empty)
{
string[] contactStrings = intentString.Split('|');
for (int i = 0; i < contactStrings.Length; i++)
{
string[] contactAttr = contactStrings[i].Split(',');
_participantsAdapter.Items.Add(new ListItem(contactAttr[0], int.Parse(contactAttr[1]))); // 0 = naam, 1 = image
}
}
_participantsAdapter.NotifyDataSetChanged();
_participantsRecyclerView.LayoutParameters.Height = ConvertDptoPx(listItemHeight * _participantsAdapter.Items.Count);
_participantsRecyclerView.Invalidate ();
_scrollView.Invalidate();
_scrollView.RequestLayout();
}
}
}
protected virtual void OnCreate(Bundle bundle, RedLaserSettings settings)
{
base.OnCreate (bundle);
this.settings = settings;
StatusManager.Initialize(this);
Log.Debug(TAG, "Starting capture activity");
var window = Window;
window.AddFlags(WindowManagerFlags.KeepScreenOn);
this.mBarcodeScanLayout = new BarcodeScanLayout(this, this.settings.HoldStill, this.settings.AlignBarcode);
SetContentView(this.mBarcodeScanLayout);
var metrics = new DisplayMetrics();
WindowManager.DefaultDisplay.GetMetrics(metrics);
this.mWidth = metrics.WidthPixels;
this.mHeight = metrics.HeightPixels;
this.mDensity = metrics.Density;
var logo = new ImageView(this);
logo.SetScaleType(ImageView.ScaleType.Matrix);
logo.SetImageResource(LogoResource);
var matrix = new Matrix();
matrix.PostRotate(270.0f);
if(mWidth < mHeight) {
var temp = mWidth;
mWidth = mHeight;
mHeight = temp;
}
var offset = 0;
if(mDensity == 1.0f) {
offset = 100;
}
matrix.PostTranslate((float)(mWidth / 2.0d + mWidth / 8 * mDensity) + offset, (float)(mHeight / 2.80 + 160.0f * mDensity));
logo.ImageMatrix = matrix;
CameraManager.Init(Application);
viewfinderView = mBarcodeScanLayout.ViewFinderView;
handler = null;
hasSurface = false;
}
//@Override
protected override void onLoadingDrawableSet(Drawable imageDrawable)
{
if (null != imageDrawable)
{
int dHeight = imageDrawable.IntrinsicHeight;
int dWidth = imageDrawable.IntrinsicWidth;
/**
* We need to set the width/height of the ImageView so that it is
* square with each side the size of the largest drawable dimension.
* This is so that it doesn't clip when rotated.
*/
ViewGroup.LayoutParams lp = mHeaderImage.LayoutParameters;
lp.Width = lp.Height = Math.Max(dHeight, dWidth);
mHeaderImage.RequestLayout();
/**
* We now rotate the Drawable so that is at the correct rotation,
* and is centered.
*/
mHeaderImage.SetScaleType(ImageView.ScaleType.Matrix);
Matrix matrix = new Matrix();
matrix.PostTranslate((lp.Width - dWidth) / 2f, (lp.Height - dHeight) / 2f);
matrix.PostRotate(getDrawableRotationAngle(), lp.Width / 2f, lp.Height / 2f);
mHeaderImage.ImageMatrix = 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>
private void ConfigureTransform(int viewWidth, int viewHeight)
{
Activity activity = Activity;
if (mTextureView == 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 = Math.Max ((float)viewHeight / mPreviewSize.Height, (float)viewWidth / mPreviewSize.Width);
matrix.PostScale (scale, scale, centerX, centerY);
matrix.PostRotate (90 * ((int)rotation - 2), centerX, centerY);
}
mTextureView.SetTransform (matrix);
}
public void SetRotorPosAngle(float deg)
{
Console.WriteLine("posDegree = {0}", deg);
if (deg >= 210 || deg <= 150)
{
if (deg > 180)
deg = deg - 360;
// Rotate handle
Matrix matrix = new Matrix();
m_RotorImaveView.SetScaleType(ImageView.ScaleType.Matrix);
matrix.PostRotate((float)deg, m_Width / 2, m_Height / 2);
m_RotorImaveView.ImageMatrix = matrix;
}
}
public static ImageView RotateImage(ImageView image, RectangleF origImageFrame, RectangleF rotatedImageRect, double degAngle, bool disposeOriginalImage)
{
ImageView toReturn = image;
float width = image.Drawable.Bounds.Width () / 2;
float height = image.Drawable.Bounds.Height () / 2;
double radAngle = degAngle * LOLConstants.DegToRad;
Matrix matrix = new Matrix ();
toReturn.SetScaleType (ImageView.ScaleType.Matrix); //required
matrix.PostRotate ((float)degAngle, width, height);
toReturn.ImageMatrix = matrix;
return toReturn;
}
Bitmap RotateDownsizeBitmap( string imageFile, float size )
{
// first see how big this image is.
BitmapFactory.Options decodeOptions = new BitmapFactory.Options();
decodeOptions.InJustDecodeBounds = true;
BitmapFactory.DecodeFile( imageFile, decodeOptions );
// now limit its size to 'size'
float scaleFactor = (float)decodeOptions.OutWidth / size;
if ( scaleFactor > 1.00f )
{
decodeOptions.InSampleSize = (int)System.Math.Ceiling( scaleFactor );
}
else
{
scaleFactor = (float)decodeOptions.OutHeight / size;
if ( scaleFactor > 1.00f )
{
decodeOptions.InSampleSize = (int)System.Math.Ceiling( scaleFactor );
}
}
decodeOptions.InJustDecodeBounds = false;
// Open the bitmap
Bitmap sourceBmp = BitmapFactory.DecodeFile( imageFile, decodeOptions );
// does the image need to be rotated?
Java.IO.File javaImageFile = new Java.IO.File( imageFile );
int neededRotation = NeededRotation( javaImageFile );
if ( neededRotation != 0 )
{
// create a rotation matrix to orient the picture "up"
Matrix transform = new Matrix();
transform.PostRotate( neededRotation );
// re-create the bitmap rotated.
Bitmap rotatedBmp = Bitmap.CreateBitmap( sourceBmp, 0, 0, sourceBmp.Width, sourceBmp.Height, transform, true );
// release our refs to the bmps
sourceBmp.Dispose( );
sourceBmp = null;
return rotatedBmp;
}
else
{
return sourceBmp;
}
}
