/***********************************************************************/
/* DRAG */
/***********************************************************************/
private void DragDown(MouseEventArgs e)
{
drawX = e.X;
drawY = e.Y;
tempClipboard = Grid.CopyRegion(selectedRegion);
Grid.ClearRegion(selectedRegion);
dragable = true;
}
public void ClearRegionTest()
{
// Generate a random 20 x 20 bitmap
Bitmap bmp = new Bitmap(20, 20);
Random r = new Random();
for (int x = 0; x < bmp.Width; x++)
{
for (int y = 0; y < bmp.Height; y++)
{
bmp.SetPixel(x, y, Color.FromArgb(255, Color.FromArgb(r.Next())));
}
}
// Initialize a grid of the random bitmap
DrawingGrid grid = new DrawingGrid(bmp, 10, 1);
// Generate a random inbounds rectangle
Rectangle inBounds = new Rectangle(0, 0, r.Next(20), r.Next(20));
// Clear the region
grid.ClearRegion(inBounds);
// Verify that the region was actually cleared
for (int x = 0; x < inBounds.Width; x++)
{
for (int y = 0; y < inBounds.Height; y++)
{
AreEqual(grid.GetCell(x, y), Color.White);
}
}
// Now Generate a random out of bounds rectangle
Rectangle outBounds = new Rectangle(r.Next(5, 10), r.Next(5, 10), 20, 20);
// Clear that region
grid = new DrawingGrid(bmp, 10, 1);
grid.ClearRegion(outBounds);
// Verify that the region was cleared
for (int x = 0; x < inBounds.Width; x++)
{
for (int y = 0; y < inBounds.Height; y++)
{
if (x + outBounds.X < grid.size.Width && y + outBounds.Y < grid.size.Height)
{
AreEqual(grid.GetCell(x + outBounds.X, y + outBounds.Y), Color.White);
}
}
}
}