private void MainWindow_KeyDown(object sender, KeyRoutedEventArgs args)
{
var ttv = rect.TransformToVisual(previewElement);
Point screenCoords = ttv.TransformPoint(new Point(0, 0));
var ttvcanvas = PreviewCanvas.TransformToVisual(grid);
Point screenCoordscanvas = ttvcanvas.TransformPoint(new Point(0, 0));
if (args.Key == Windows.System.VirtualKey.Add && rect.ActualWidth <= previewElement.ActualWidth && rect.ActualHeight <= previewElement.ActualHeight)
{
rect.Width = rect.ActualWidth + 10;
rect.Height = rect.ActualWidth + 10;
}
else if (args.Key == Windows.System.VirtualKey.Subtract && rect.Width >= 0)
{
rect.Width = rect.ActualWidth - 10;
rect.Height = rect.ActualWidth - 10;
}
else if (args.Key == Windows.System.VirtualKey.Left && screenCoords.X >= 0)
{
rect.Margin = new Thickness(rect.Margin.Left - 10, rect.Margin.Top, rect.Margin.Right + 10, rect.Margin.Bottom);
}
else if (args.Key == Windows.System.VirtualKey.Right && screenCoords.X <= screenCoordscanvas.X + PreviewCanvas.Width - rect.Width)
{
rect.Margin = new Thickness(rect.Margin.Left + 10, rect.Margin.Top, rect.Margin.Right - 10, rect.Margin.Bottom);
}
else if (args.Key == Windows.System.VirtualKey.Up && screenCoords.Y >= 0)
{
rect.Margin = new Thickness(rect.Margin.Left, rect.Margin.Top - 10, rect.Margin.Right, rect.Margin.Bottom + 10);
}
else if (args.Key == Windows.System.VirtualKey.Down && screenCoords.Y <= screenCoordscanvas.Y + PreviewCanvas.Height - rect.Height)
{
rect.Margin = new Thickness(rect.Margin.Left, rect.Margin.Top + 10, rect.Margin.Right, rect.Margin.Bottom - 10);
}
}
private void ChooseFile_Click(object sender, EventArgs e)
{
using (OpenFileDialog openJsonFile = new OpenFileDialog())
{
openJsonFile.InitialDirectory = "C:\\";
openJsonFile.Filter = "json files (*.json)|*.json";
openJsonFile.RestoreDirectory = true;
if (openJsonFile.ShowDialog() == DialogResult.OK)
{
try
{
Stream fileStream = openJsonFile.OpenFile();
this.ReadCurrentSelection(fileStream);
fileStream.Close();
}
catch
{
MessageBox.Show("json文件格式错误，请检查输入文件。");
return;
}
///Write the data to the command as well.
originCommand.CurrentHouse = this.CurrentHouse;
this.CheckCondition();
PreviewCanvas.Refresh();
}
}
}
private void PreviewCanvas_Paint(object sender, PaintEventArgs e)
{
///Graphic prepare
myPen = new Pen(Color.Black);
g = PreviewCanvas.CreateGraphics();
g.Clear(Color.White);
canvasW = PreviewCanvas.Width;
canvasH = PreviewCanvas.Height;
///
if (CurrentHouse == null)
{
return;
}
List <A_Wall> walls = CurrentHouse.Floors
.SelectMany(f => f.Walls).ToList();
List <A_Point> pts = walls.Select(w => w.P1).ToList();
pts.AddRange(walls.Select(w => w.P2));
///Get the range of the house.
float minX = pts.OrderBy(p => p.X).First().X;
float minY = pts.OrderBy(p => p.Y).First().Y;
float maxX = pts.OrderByDescending(p => p.X)
.First().X;
float maxY = pts.OrderByDescending(p => p.Y)
.First().Y;
///Calculate the transform and scale factor.
Point toBaseT = Point.Round(new PointF(minX, minY));
float scaleX = (maxX - minX) / canvasW;
float scaleY = (maxY - minY) / canvasH;
float scale = Math.Max(scaleX, scaleY);
scale = (float)(scale / 0.9);
foreach (A_Wall wall in walls)
{
float x1 = ((wall.P1.X - minX) / scale) + (canvasW / 20);
float y1 = ((wall.P1.Y - minY) / scale) + (canvasH / 20);
float x2 = ((wall.P2.X - minX) / scale) + (canvasW / 20);
float y2 = ((wall.P2.Y - minY) / scale) + (canvasH / 20);
PointF p1 = new PointF(x1, y1);
PointF p2 = new PointF(x2, y2);
g.DrawLine(myPen, p1, p2);
}
}
private void MainCanvas_CanvasScroll(object sender, EventArgs e)
{
EndInput();
PreviewCanvas.Invalidate();
}
private void ViewportOperations(Windows.System.VirtualKey args)
{
var ttv = rect.TransformToVisual(grid);
Point screenCoords = ttv.TransformPoint(new Point(0, 0));
var ttvcanvas = PreviewCanvas.TransformToVisual(grid);
Point screenCoordscanvas = ttvcanvas.TransformPoint(new Point(0, 0));
if (args == Windows.System.VirtualKey.Add && rect.ActualWidth + 10 <= previewElement.ActualWidth && rect.ActualHeight <= previewElement.ActualHeight)
{
rect.Width = rect.ActualWidth + 10;
rect.Height = rect.ActualWidth + 10;
}
else if (args == Windows.System.VirtualKey.Subtract && rect.Width - 10 >= 0)
{
rect.Width = rect.ActualWidth - 10;
rect.Height = rect.ActualWidth - 10;
}
else if (args == Windows.System.VirtualKey.Left && screenCoords.X - 10 >= 0 && screenCoords.X > screenCoordscanvas.X)
{
rect.Margin = new Thickness(rect.Margin.Left - 10, rect.Margin.Top, rect.Margin.Right + 10, rect.Margin.Bottom);
}
else if (args == Windows.System.VirtualKey.Right && screenCoords.X + 10 <= screenCoordscanvas.X + PreviewCanvas.Width - rect.ActualWidth)
{
var pending = (screenCoordscanvas.X + PreviewCanvas.Width - rect.ActualWidth) - (screenCoords.X + 10 + rect.ActualWidth);
if (pending < 10 && pending >= 0)
{
//edge case
rect.Margin = new Thickness(rect.Margin.Left + pending, rect.Margin.Top, rect.Margin.Right - pending, rect.Margin.Bottom);
}
else
{
rect.Margin = new Thickness(rect.Margin.Left + 10, rect.Margin.Top, rect.Margin.Right - 10, rect.Margin.Bottom);
}
}
else if (args == Windows.System.VirtualKey.Up && screenCoords.Y - 10 >= 0 && screenCoords.Y > screenCoordscanvas.Y)
{
var pending = screenCoords.Y - 10;
if (pending < 10)
{
rect.Margin = new Thickness(rect.Margin.Left, rect.Margin.Top - pending, rect.Margin.Right, rect.Margin.Bottom + pending);
}
else
{
rect.Margin = new Thickness(rect.Margin.Left, rect.Margin.Top - 10, rect.Margin.Right, rect.Margin.Bottom + 10);
}
}
else if (args == Windows.System.VirtualKey.Down && screenCoords.Y + 10 <= screenCoordscanvas.Y + PreviewCanvas.Height - rect.ActualHeight)
{
var pending = (screenCoordscanvas.Y + PreviewCanvas.Height - rect.ActualHeight) - (screenCoords.Y + 10 + rect.ActualHeight);
if (pending < 10 && pending >= 0)
{
//edge case
rect.Margin = new Thickness(rect.Margin.Left, rect.Margin.Top + pending, rect.Margin.Right, rect.Margin.Bottom - pending);
}
else
{
rect.Margin = new Thickness(rect.Margin.Left, rect.Margin.Top + 10, rect.Margin.Right, rect.Margin.Bottom - 10);
}
}
}
private void CmdReadJsonForm_SizeChanged(object sender, EventArgs e)
{
PreviewCanvas.Refresh();
}
