public Task PublishPixelSelectedEvent(PixelSelectedEventArgs e)
{
if (this.PixelSelected != null)
{
this.PixelSelected.Invoke(this, e);
}
return(Task.FromResult(0));
}
private async void PixelMatrix_PixelSelected(object sender, PixelSelectedEventArgs e)
{
// ***
// *** Get the current mode.
// ***
DrawMode mode = await this.GetDrawMode(e.KeyModifiers);
// ***
// *** Cache the old color of this pixel.
// ***
ColorItem selectedItem = await this.ColorMatrix.GetItem(e.Row, e.Column);
switch (mode)
{
case DrawMode.PickColor:
{
ColorItem colorItem = await this.ColorMatrix.GetItem(e.Row, e.Column);
this.PixelColor = colorItem;
this.PickColorIsChecked = false;
if (_sandWasChecked)
{
this.SandIsChecked = true;
}
else
{
this.DrawIsChecked = true;
}
}
break;
case DrawMode.Draw:
{
if (selectedItem != this.PixelColor || selectedItem.ItemType != ColorItem.ColorItemType.Pixel)
{
// ***
// *** Update the pixel.
// ***
Color color = this.PixelColor;
await this.ColorMatrix.SetItem(e.Row, e.Column, color, ColorItem.ColorItemType.Pixel);
// ***
// *** Set up the undo task.
// ***
async Task undoAction()
{
await this.ColorMatrix.SetItem(e.Row, e.Column, selectedItem);
}
async Task redoAction()
{
await this.ColorMatrix.SetItem(e.Row, e.Column, color, ColorItem.ColorItemType.Pixel);
}
await this.UndoService.AddUndoTask(undoAction, redoAction, $"Set Pixel [{e.Column}, {e.Row}, {this.PixelColor.ToString()}]");
}
}
break;
case DrawMode.Erase:
{
if (selectedItem != this.BackgroundColor || selectedItem.ItemType != ColorItem.ColorItemType.Background)
{
// ***
// *** Update the pixel.
// ***
await this.ColorMatrix.SetItem(e.Row, e.Column, this.BackgroundColor, ColorItem.ColorItemType.Background);
// ***
// *** Set up the undo task.
// ***
async Task undoAction()
{
await this.ColorMatrix.SetItem(e.Row, e.Column, selectedItem);
}
async Task redoAction()
{
await this.ColorMatrix.SetItem(e.Row, e.Column, this.BackgroundColor, ColorItem.ColorItemType.Background);
}
await this.UndoService.AddUndoTask(undoAction, redoAction, $"Clear Pixel [{e.Column}, {e.Row}]");
}
}
break;
case DrawMode.EraseColor:
{
if (selectedItem.ItemType != ColorItem.ColorItemType.Background)
{
// ***
// *** Clone the current matrix for the undo.
// ***
IColorMatrix oldColorMatrix = await this.ColorMatrix.CloneAsync();
await this.ColorMatrix.ReplaceColorAsync(selectedItem, this.BackgroundColor, true);
// ***
// *** Set up the undo task.
// ***
async Task undoAction()
{
await this.ColorMatrix.CopyFrom(oldColorMatrix);
}
async Task redoAction()
{
await this.ColorMatrix.ReplaceColorAsync(selectedItem, this.BackgroundColor, true);
}
await this.UndoService.AddUndoTask(undoAction, redoAction, $"Clear Pixels [{e.Column}, {e.Row}]");
}
}
break;
case DrawMode.Sand:
{
if (selectedItem != this.PixelColor || selectedItem.ItemType != ColorItem.ColorItemType.Sand)
{
// ***
// *** Update the pixel.
// ***
Color color = this.PixelColor;
color.A = 255;
await this.ColorMatrix.SetItem(e.Row, e.Column, color, ColorItem.ColorItemType.Sand);
// ***
// *** Set up the undo task.
// ***
async Task undoAction()
{
await this.ColorMatrix.SetItem(e.Row, e.Column, selectedItem);
}
async Task redoAction()
{
await this.ColorMatrix.SetItem(e.Row, e.Column, color, ColorItem.ColorItemType.Sand);
}
await this.UndoService.AddUndoTask(undoAction, redoAction, $"Set Sand Pixel [{e.Column}, {e.Row}, {this.PixelColor.ToString()}]");
}
}
break;
}
}
private async void LedMatrix_PixelSelected(object sender, PixelSelectedEventArgs e)
{
await this.PixelEventService.PublishPixelSelectedEvent(e);
}