public void TestUndoOperationSized()
{
// Create the objects
Bitmap target = new Bitmap(64, 64);
FastBitmap.ClearBitmap(target, Color.Transparent);
byte[] originalHash = GetHashForBitmap(target);
// Create the test subjects
PlottingPaintUndoGenerator generator = new PlottingPaintUndoGenerator(target, "Pencil");
PencilPaintOperation operation = new PencilPaintOperation(target)
{
Color = Color.Black, Notifier = generator, Size = 5
};
operation.StartOpertaion();
operation.MoveTo(5, 5);
operation.DrawTo(10, 10);
operation.DrawTo(15, 17);
operation.DrawTo(20, 25);
operation.DrawTo(25, 37);
operation.DrawTo(5, 5);
operation.FinishOperation();
// Undo the task
generator.UndoTask.Undo();
byte[] afterUndoHash = GetHashForBitmap(target);
RegisterResultBitmap(target, "PencilOperation_AfterUndoSized");
Assert.IsTrue(originalHash.SequenceEqual(afterUndoHash), "After undoing a paint operation's task, its pixels must return to their original state before the operation was applied");
}
/// <summary>
/// Starts this pencil operation on a specified point
/// </summary>
/// <param name="point">The point to start this operation on</param>
private void StartOperation(Point point)
{
mouseDown = true;
lastMousePosition = point;
Color penColor = (penId == 0 ? firstColor : secondColor);
pencilOperation.Color = penColor;
pencilOperation.CompositingMode = CompositingMode;
undoGenerator = new PlottingPaintUndoGenerator(pictureBox.Bitmap, undoDecription);
pencilOperation.Notifier = undoGenerator;
pencilOperation.StartOpertaion(accumulateAlpha);
pencilOperation.MoveTo(point.X, point.Y);
DrawPencil(point, null);
}
public void TestRedoOperation_SizedSourceOverAlpha()
{
// Create the objects
Bitmap target = FrameGenerator.GenerateRandomBitmap(64, 64, 10);
// Create the test subjects
PlottingPaintUndoGenerator generator = new PlottingPaintUndoGenerator(target, "Pencil");
PencilPaintOperation operation = new PencilPaintOperation(target)
{
Color = Color.FromArgb(127, 0, 0, 0),
CompositingMode = CompositingMode.SourceOver,
Size = 5,
Notifier = generator
};
operation.StartOpertaion();
operation.MoveTo(5, 5);
operation.DrawTo(10, 10);
operation.DrawTo(15, 17);
operation.DrawTo(20, 25);
operation.DrawTo(25, 37);
operation.DrawTo(5, 5);
operation.FinishOperation();
byte[] originalHash = GetHashForBitmap(target);
// Undo and redo the task back
generator.UndoTask.Undo();
generator.UndoTask.Redo();
byte[] afterRedoHash = GetHashForBitmap(target);
RegisterResultBitmap(target, "PencilOperation_AfterRedo_SizedSourceOverAlpha");
Assert.IsTrue(originalHash.SequenceEqual(afterRedoHash), "After redoing a paint operation's task, its pixels must return to their original state after the operation was applied");
}
/// <summary>
/// Performs the Line paint operation with the given parameters
/// </summary>
/// <param name="color">The color to use when drawing the line</param>
/// <param name="firstPoint">The first point of the line to draw</param>
/// <param name="secondPoint">The second point of the line to draw</param>
/// <param name="bitmap">The Bitmap to draw the line on</param>
/// <param name="compositingMode">The CompositingMode to use when drawing the line</param>
/// <param name="size">The size of the line to draw</param>
/// <param name="recordUndo">Whether to generate an undo operation for this line operation</param>
/// <returns>An undo task for the line operation, or null, if recordUndo is false</returns>
public static PerPixelUndoTask PerformLineOperation(Color color, Point firstPoint, Point secondPoint, Bitmap bitmap, CompositingMode compositingMode, int size, bool recordUndo)
{
PlottingPaintUndoGenerator generator = null;
if (recordUndo)
{
generator = new PlottingPaintUndoGenerator(bitmap, "Line");
}
PencilPaintOperation operation = new PencilPaintOperation(bitmap, true, firstPoint)
{
Color = color,
CompositingMode = compositingMode,
Notifier = generator,
Size = size
};
operation.StartOpertaion(false);
operation.DrawTo(secondPoint.X, secondPoint.Y);
operation.FinishOperation();
return(recordUndo ? generator.UndoTask : null);
}
public void TestUndoOperation_SourceOverAlphaFailing()
{
// Create the objects
Bitmap target = FrameGenerator.GenerateRandomBitmap(64, 64, 10);
byte[] originalHash = GetHashForBitmap(target);
// Create the test subjects
PlottingPaintUndoGenerator generator = new PlottingPaintUndoGenerator(target, "Pencil", keepReplacedUndos: false);
PencilPaintOperation operation = new PencilPaintOperation(target)
{
Color = Color.FromArgb(127, 0, 0, 0),
CompositingMode = CompositingMode.SourceOver,
Notifier = generator
};
operation.StartOpertaion();
operation.MoveTo(5, 5);
operation.DrawTo(10, 10);
operation.DrawTo(15, 17);
operation.DrawTo(20, 25);
operation.DrawTo(25, 37);
operation.DrawTo(5, 5);
operation.FinishOperation();
// Undo the task
generator.UndoTask.Undo();
byte[] afterUndoHash = GetHashForBitmap(target);
RegisterResultBitmap(target, "PencilOperation_AfterUndo_SourceOverAlpha_Failed");
Assert.IsFalse(originalHash.SequenceEqual(afterUndoHash),
"Plotting the same pixel repeatedly with an undo generator that has keepReplacedOriginals should fail, since the redrawn pixels have their undo color replaced");
}
