private void CheckAndMoveLanding(TouchManipulationBitmap bmp)
{
float xcol = (bmp.Matrix.TransX - StartOffset) / QuadSize;
float yrow = (bmp.Matrix.TransY - StartOffset) / QuadSize;
int col = (int)Math.Round(xcol);
int row = (int)Math.Round(yrow);
if (!(col > Cols + 1 || col < -1 || row > row + 1 || row < -1))
{
if (col > Cols - 1)
{
col = Cols - 1;
}
if (col < 0)
{
col = 0;
}
if (row > Rows - 1)
{
row = Rows - 1;
}
if (row < 0)
{
row = 0;
}
SKPoint pt = BoundPoints[row * Cols + col];
bmp.Matrix = SKMatrix.MakeTranslation(pt.X, pt.Y);
}
}
private void InitializePictures()
{
// Load bitmaps
Assembly assembly = GetType().GetTypeInfo().Assembly;
string[] resourceIDs = (from tmp in assembly.GetManifestResourceNames()
where tmp.Contains(".Puzzle.")
select tmp).ToArray();
SKImageInfo inf = new SKImageInfo((int)(ActualHeight * 1.2), (int)(ActualHeight * 0.8));
for (int i = 0; i < resourceIDs.Length; i++)
{
using (Stream stream = assembly.GetManifestResourceStream(resourceIDs[i]))
{
SKBitmap bitmap = SKBitmap.Decode(stream).Resize(inf, SKFilterQuality.High);
Bitmaps.Add(bitmap);
}
}
inf = new SKImageInfo(QuadSize, QuadSize);
int imageId = rnd.Next(Bitmaps.Count);
SKBitmap chosen = Bitmaps[imageId];
bitmapCollection = new List <TouchManipulationBitmap>();
SKPoint position = new SKPoint(StartOffset, StartOffset);
for (int row = 0; row < Rows; row++)
{
for (int col = 0; col < Cols; col++)
{
SKBitmap bmpNew = new SKBitmap(QuadSize, QuadSize);
SKRect dest = new SKRect(0, 0, QuadSize, QuadSize);
SKRect source = new SKRect(col * QuadSize, row * QuadSize, (col + 1) * QuadSize, (row + 1) * QuadSize);
using (SKCanvas canvas = new SKCanvas(bmpNew))
{
canvas.Clear();
canvas.DrawBitmap(chosen, source, dest);
}
TouchManipulationBitmap tmpBmp = new TouchManipulationBitmap(bmpNew, row * Cols + col)
{
Matrix = SKMatrix.MakeTranslation(position.X, position.Y)
};
BoundPoints.Add(position);
if (col == Cols - 1)
{
position.Y += QuadSize;
position.X = StartOffset;
}
else
{
position.X += QuadSize;
}
bitmapCollection.Add(tmpBmp);
}
}
}
void OnTouchEffectAction(object sender, TouchActionEventArgs args)
{
// Convert Xamarin.Forms point to pixels
Point pt = args.Location;
SKPoint point =
new SKPoint((float)(canvasView.CanvasSize.Width * pt.X / canvasView.Width),
(float)(canvasView.CanvasSize.Height * pt.Y / canvasView.Height));
switch (args.Type)
{
case TouchActionType.Pressed:
for (int i = bitmapCollection.Count - 1; i >= 0; i--)
{
TouchManipulationBitmap bitmap = bitmapCollection[i];
if (bitmap.HitTest(point))
{
// Move bitmap to end of collection
bitmapCollection.Remove(bitmap);
bitmapCollection.Add(bitmap);
// Do the touch processing
bitmapDictionary.Add(args.Id, bitmap);
bitmap.ProcessTouchEvent(args.Id, args.Type, point);
canvasView.InvalidateSurface();
break;
}
}
break;
case TouchActionType.Moved:
if (bitmapDictionary.ContainsKey(args.Id))
{
TouchManipulationBitmap bitmap = bitmapDictionary[args.Id];
bitmap.ProcessTouchEvent(args.Id, args.Type, point);
canvasView.InvalidateSurface();
}
break;
case TouchActionType.Released:
case TouchActionType.Cancelled:
if (bitmapDictionary.ContainsKey(args.Id))
{
TouchManipulationBitmap bitmap = bitmapDictionary[args.Id];
bitmap.ProcessTouchEvent(args.Id, args.Type, point);
bitmapDictionary.Remove(args.Id);
canvasView.InvalidateSurface();
}
break;
}
}
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();
}
}
}
private async void OnTouchEffectAction(object sender, TouchActionEventArgs args)
{
if (!canProcessTouchEvent)
{
return;
}
// Convert Xamarin.Forms point to pixels
Point pt = args.Location;
SKPoint point =
new SKPoint((float)(canvasView.CanvasSize.Width * pt.X / canvasView.Width),
(float)(canvasView.CanvasSize.Height * pt.Y / canvasView.Height));
switch (args.Type)
{
case TouchActionType.Pressed:
for (int i = bitmapCollection.Count - 1; i >= 0; i--)
{
TouchManipulationBitmap bitmap = bitmapCollection[i];
if (bitmap.HitTest(point))
{
// Move bitmap to end of collection
bitmapCollection.Remove(bitmap);
bitmapCollection.Add(bitmap);
// Do the touch processing
bitmapDictionary.Add(args.Id, bitmap);
bitmap.ProcessTouchEvent(args.Id, args.Type, point);
canvasView.InvalidateSurface();
break;
}
}
break;
case TouchActionType.Moved:
if (bitmapDictionary.ContainsKey(args.Id))
{
TouchManipulationBitmap bitmap = bitmapDictionary[args.Id];
bitmap.ProcessTouchEvent(args.Id, args.Type, point);
canvasView.InvalidateSurface();
}
break;
case TouchActionType.Released:
case TouchActionType.Cancelled:
if (bitmapDictionary.ContainsKey(args.Id))
{
TouchManipulationBitmap bitmap = bitmapDictionary[args.Id];
bitmap.ProcessTouchEvent(args.Id, args.Type, point);
bitmapDictionary.Remove(args.Id);
CheckAndMoveLanding(bitmap);
bool check = CheckRightCombination();
canvasView.InvalidateSurface();
if (check)
{
await DisplayAlert("Victory", "You have won", "Ok");
SaveResult();
await Navigation.PopAsync();
}
}
break;
}
}
