async void OnSquareTapped(object parameter)
{
PuzzleSquare tappedSquare = (PuzzleSquare)parameter;
await ShiftIntoEmpty(tappedSquare.Row, tappedSquare.Col);
// Check for a "win".
int index;
for (index = 0; index < NUM * NUM - 1; index++)
{
int row = index / NUM;
int col = index % NUM;
PuzzleSquare square = squares[row, col];
if (square == null || square.Index != index)
{
break;
}
}
// We have a winner!
if (index == NUM * NUM - 1)
{
isPlaying = false;
await DisplayAlert("CONGRATULATION", "YOU WON", "OK");
}
}
void OnStackSizeChanged(object sender, EventArgs args)
{
double width = stackLayout.Width;
double height = stackLayout.Height;
if (width <= 0 || height <= 0)
{
return;
}
// Orient StackLayout based on portrait/landscape mode.
stackLayout.Orientation = (width < height) ? StackOrientation.Vertical :
StackOrientation.Horizontal;
// Calculate square size and position based on stack size.
squareSize = Math.Min(width, height) / NUM;
absoluteLayout.WidthRequest = NUM * squareSize;
absoluteLayout.HeightRequest = NUM * squareSize;
foreach (View view in absoluteLayout.Children)
{
PuzzleSquare square = (PuzzleSquare)view;
Xamarin.Forms.AbsoluteLayout.SetLayoutBounds(square,
new Rectangle(square.Col * squareSize,
square.Row * squareSize,
squareSize,
squareSize));
}
}
async Task AnimateSquare(int row, int col, int newRow, int newCol, uint length)
{
// The Square to be animated.
PuzzleSquare animaSquare = squares[row, col];
// The destination rectangle.
Rectangle rect = new Rectangle(squareSize * emptyCol,
squareSize * emptyRow,
squareSize,
squareSize);
// This is the actual animation call.
await animaSquare.LayoutTo(rect, length);
// Set several variables and properties for new layout.
squares[newRow, newCol] = animaSquare;
animaSquare.Row = newRow;
animaSquare.Col = newCol;
squares[row, col] = null;
emptyRow = row;
emptyCol = col;
}
public PuzzlePage()
{
// AbsoluteLayout to host the squares.
absoluteLayout = new Xamarin.Forms.AbsoluteLayout()
{
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center
};
// Create XuzzleSquare's for all the rows and columns.
Image[] normalImages = new Image[NUM * NUM];
int index = 0;
for (int row = 0; row < NUM; row++)
{
for (int col = 0; col < NUM; col++)
{
// But skip the last one!
if (row == NUM - 1 && col == NUM - 1)
{
break;
}
// Instantiate the image reading it from the local resources.
normalImages[index] = new Image();
if (NUM == 2)
{
normalImages[index].Source = ImageSource
.FromResource(String.Format("Puzzles.Images.flower" + index + ".png"));
}
if (NUM == 4)
{
normalImages[index].Source = ImageSource
.FromResource(String.Format("Puzzles.ImagesMedium.insect" + index + ".png"));
}
if (NUM == 5)
{
normalImages[index].Source = ImageSource
.FromResource(String.Format("Puzzles.Images5X5.nature" + index + ".png"));
}
//Bitmap bmp = BitmapFactory.DecodeResourceAsync(String.Format("Puzzles.test.png"));
//BitmapDrawable bitmapDrawable = new BitmapDrawable(bmp);
//bitmapDrawable.SetTileModeXY(Shader.TileMode.Repeat, Shader.TileMode.Repeat);
//getPuzzleBitmap(image);
//ImageView imageview = (ImageView)("Puzzles.test.png");
//Bitmap drawingCache = imageview.GetDrawingCache(true);
//Canvas canvas = new Canvas();
//Rect src = new Rect(23, 12, 23, 12);
//RectF dst = new RectF(0, 20, 0, 20); Paint paint = new Paint();
//canvas.DrawBitmap(drawingCache, src, dst, paint);
//Bitmap piece = Bitmap.CreateBitmap(normalImages, row, col, 30, 30);
//Drawable myDrawable = getResources().getDrawable(R.drawable.logo);
//Bitmap myLogo = ((BitmapDrawable)myDrawable).getBitmap();
// Instantiate XuzzleSquare.
PuzzleSquare square = new PuzzleSquare(normalImages[index], index)
{
Row = row,
Col = col
};
// Add tap recognition
TapGestureRecognizer tapGestureRecognizer = new TapGestureRecognizer
{
Command = new Command(OnSquareTapped),
CommandParameter = square
};
square.GestureRecognizers.Add(tapGestureRecognizer);
//Bitmap bitmap = BitmapFactory.DecodeFile("Puzzles.test.png");
//cropBitmap(bitmap, Convert.ToInt32(square.WidthRequest), Convert.ToInt32(square.HeightRequest));
// Add it to the array and the AbsoluteLayout.
squares[row, col] = square;
absoluteLayout.Children.Add(square);
index++;
}
}
// This is the "Randomize" button.
randomizeButton = new Xamarin.Forms.Button
{
Text = "Randomize",
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.CenterAndExpand
};
randomizeButton.Clicked += OnRandomizeButtonClicked;
// Label to display elapsed time.
timeLabel = new Label
{
FontSize = Device.GetNamedSize(NamedSize.Large, typeof(Label)),
FontAttributes = FontAttributes.Bold,
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.CenterAndExpand
};
// Put everything in a StackLayout.
stackLayout = new StackLayout
{
Children =
{
new StackLayout {
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Children =
{
randomizeButton,
timeLabel,
}
},
absoluteLayout
}
};
stackLayout.SizeChanged += OnStackSizeChanged;
// And set that to the content of the page.
this.Padding =
new Thickness(0, Device.OnPlatform(20, 0, 0), 0, 0);
this.Content = stackLayout;
}