public void SetImageRotateBitmapResetBase(RotateBitmap bitmap, bool resetSupp) { int viewWidth = Width; if (viewWidth <= 0) { onLayoutRunnable = () => { SetImageRotateBitmapResetBase(bitmap, resetSupp); }; return; } if (bitmap.Bitmap != null) { getProperBaseMatrix(bitmap, baseMatrix); setImageBitmap(bitmap.Bitmap, bitmap.Rotation); } else { baseMatrix.Reset(); base.SetImageBitmap(null); } if (resetSupp) { suppMatrix.Reset(); } ImageMatrix = GetImageViewMatrix(); this.maxZoom = CalculateMaxZoom(); }
/// <summary> /// Setup the base matrix so that the image is centered and scaled properly. /// </summary> private void getProperBaseMatrix(RotateBitmap bitmap, Matrix matrix) { float viewWidth = Width; float viewHeight = Height; float w = bitmap.Width; float h = bitmap.Height; int rotation = bitmap.Rotation; matrix.Reset(); // We limit up-scaling to 2x otherwise the result may look bad if it's // a small icon. float widthScale = Math.Min(viewWidth / w, 2.0f); float heightScale = Math.Min(viewHeight / h, 2.0f); float scale = Math.Min(widthScale, heightScale); matrix.PostConcat(bitmap.GetRotateMatrix()); matrix.PostScale(scale, scale); matrix.PostTranslate( (viewWidth - w * scale) / 2F, (viewHeight - h * scale) / 2F); }
protected override void OnCreate(Bundle savedInstanceState) { base.OnCreate(savedInstanceState); RequestWindowFeature(Android.Views.WindowFeatures.NoTitle); SetContentView(Resource.Layout.cropimage); imageView = FindViewById <CropImageView>(Resource.Id.image); showStorageToast(this); Bundle extras = Intent.Extras; if (extras != null) { imagePath = extras.GetString("image-path"); saveUri = getImageUri(imagePath); if (extras.GetString(MediaStore.ExtraOutput) != null) { saveUri = getImageUri(extras.GetString(MediaStore.ExtraOutput)); } bitmap = getBitmap(imagePath); aspectX = extras.GetInt("aspectX"); aspectY = extras.GetInt("aspectY"); outputX = extras.GetInt("outputX"); outputY = extras.GetInt("outputY"); scale = extras.GetBoolean("scale", true); scaleUp = extras.GetBoolean("scaleUpIfNeeded", true); if (extras.GetString("outputFormat") != null) { outputFormat = Bitmap.CompressFormat.ValueOf(extras.GetString("outputFormat")); } } if (bitmap == null) { Finish(); return; } Window.AddFlags(WindowManagerFlags.Fullscreen); FindViewById <Button>(Resource.Id.discard).Click += (sender, e) => { SetResult(Result.Canceled); Finish(); }; FindViewById <Button>(Resource.Id.save).Click += (sender, e) => { onSaveClicked(); }; FindViewById <Button>(Resource.Id.rotateLeft).Click += (o, e) => { bitmap = Util.rotateImage(bitmap, -90); RotateBitmap rotateBitmap = new RotateBitmap(bitmap); imageView.SetImageRotateBitmapResetBase(rotateBitmap, true); addHighlightView(); }; FindViewById <Button>(Resource.Id.rotateRight).Click += (o, e) => { bitmap = Util.rotateImage(bitmap, 90); RotateBitmap rotateBitmap = new RotateBitmap(bitmap); imageView.SetImageRotateBitmapResetBase(rotateBitmap, true); addHighlightView(); }; imageView.SetImageBitmapResetBase(bitmap, true); addHighlightView(); }