private void OnMouseDown(object sender, MouseButtonEventArgs e)
{
if (e.ButtonState == MouseButtonState.Pressed)
{
currentPoint = Mouse.GetMousePosition(CanvasImage);
}
}
private void Container_LeftClick(object sender, MouseButtonEventArgs e)
{
if (isDrawingPolygon)
{
var p = Mouse.GetMousePosition(CanvasImage);
polygonVertices.Add(p);
}
}
private void OnMouseMove(object sender, MouseEventArgs e)
{
if (isDrawingPolygon)
{
return;
}
if (e.LeftButton == MouseButtonState.Pressed)
{
var to = Mouse.GetMousePosition(CanvasImage);
canvas.DrawLine((int)currentPoint.X, (int)currentPoint.Y, (int)to.X, (int)to.Y);
currentPoint = to;
}
}
private void Container_RightClick(object sender, MouseEventArgs e)
{
Container.ContextMenu = null;
var p = Mouse.GetMousePosition(CanvasImage);
if (canvas.IsPointInsideSomePolygon(p.X, p.Y))
{
showFillPolygonMenu = true;
}
else
{
showFillPolygonMenu = false;
}
var drawContextMenu = new ContextMenu();
var drawLine = new MenuItem();
var drawRect = new MenuItem();
var drawPolygon = new MenuItem();
var drawCircle = new MenuItem();
if (!isDrawingLine)
{
drawLine.Header = "Start line";
drawLine.Click += (s, ee) =>
{
drawingLineStart = p;
isDrawingLine = true;
};
}
else
{
drawCircle.IsEnabled = false;
drawPolygon.IsEnabled = false;
drawRect.IsEnabled = false;
drawLine.Header = "End line";
drawLine.Click += (s, ee) =>
{
canvas.DrawLine((int)drawingLineStart.X, (int)drawingLineStart.Y,
(int)p.X, (int)p.Y);
isDrawingLine = false;
};
}
if (!isDrawingRect)
{
drawRect.Header = "Start clipping rect";
drawRect.Click += (s, ee) =>
{
drawingRectStart = p;
isDrawingRect = true;
};
}
else
{
drawLine.IsEnabled = false;
drawPolygon.IsEnabled = false;
drawCircle.IsEnabled = false;
drawRect.Header = "End clipping rect";
drawRect.Click += (s, ee) =>
{
canvas.DrawClippingRect(
(int)Math.Min(drawingRectStart.X, p.X), (int)Math.Min(drawingRectStart.Y, p.Y),
(int)Math.Max(drawingRectStart.X, p.X), (int)Math.Max(drawingRectStart.Y, p.Y));
isDrawingRect = false;
};
}
if (!isDrawingPolygon)
{
drawPolygon.Header = "Start polygon";
drawPolygon.Click += (s, ee) =>
{
isDrawingPolygon = true;
polygonVertices.Add(p);
};
}
else
{
drawLine.IsEnabled = false;
drawRect.IsEnabled = false;
drawCircle.IsEnabled = false;
drawPolygon.Header = "End polygon";
drawPolygon.Click += (s, ee) =>
{
isDrawingPolygon = false;
canvas.DrawPolygon(polygonVertices);
polygonVertices.Clear();
};
}
drawCircle.Header = "Draw circle";
drawCircle.Click += (s, ee) =>
{
canvas.DrawCircle((int)p.X, (int)p.Y, 50);
};
drawContextMenu.Items.Add(drawLine);
drawContextMenu.Items.Add(drawRect);
drawContextMenu.Items.Add(drawPolygon);
drawContextMenu.Items.Add(new Separator());
drawContextMenu.Items.Add(drawCircle);
if (showFillPolygonMenu)
{
var fillPolygon = new MenuItem();
fillPolygon.Header = "Fill polygon";
fillPolygon.Click += (s, ee) =>
{
canvas.FillRectangleUnderCursor();
};
drawContextMenu.Items.Add(new Separator());
drawContextMenu.Items.Add(fillPolygon);
}
Container.ContextMenu = drawContextMenu;
}
