public Form1()
{
InitializeComponent();
ImageEditor imageEditor = new ImageEditor();
imageEditor.Dock = DockStyle.Fill;
this.Controls.Add(imageEditor);
imageEditor.Add(Image.FromFile("./1.png"));
imageEditor.Add(Image.FromFile("./2.png"));
}
public void ScaleTo(Point start, Point end)
{
if (this._width == 0 || this._height == 0)
{
return;
}
Matrix matrix = _matrix.Clone();
matrix.Invert();
Point[] points = new Point[2] {
start, end
};
matrix.TransformPoints(points);
var vector = ImageEditor.MeasureVector(points[0], points[1]);
/////matrix.Invert();
float centerx = this.Bound.Left + this.Bound.Width / 2;
float centery = this.Bound.Top + this.Bound.Height / 2;
if (start.X > centerx)
{
_width += vector.X;
}
else
{
_width -= vector.X;
Location = new Point(Location.X + vector.X, Location.Y);
}
if (start.Y > centery)
{
_height += vector.Y;
}
else
{
_height -= vector.Y;
Location = new Point(Location.X, Location.Y + vector.Y);
}
///////_matrix.Reset();
//float xScale = vector.X*1.0f / this._width+1;
//float yScale = vector.Y*1.0f / this._height+1;
//_matrix.Scale(xScale,yScale,MatrixOrder.Prepend);
////_matrix.Translate(-1*vector.X,-1* vector.Y);
//matrix.Invert();
/////_matrix.Multiply(matrix);
///_matrix.Multiply(matrix);
UpdateTransformArray();
}
public void Pan(Point start, Point end)
{
Matrix matrix = _matrix.Clone();
matrix.Invert();
Point[] points = new Point[2] {
start, end
};
matrix.TransformPoints(points);
var vector = ImageEditor.MeasureVector(points[0], points[1]);
//Matrix matrix = new Matrix();
//matrix.Translate(vector.X, vector.Y);
_matrix.Translate(vector.X, vector.Y);
////_matrix.Translate(vector.X, vector.Y);
UpdateTransformArray();
}
public virtual void OnMouseMove(MouseEventArgs e)
{
Cursor cursor = Cursors.Arrow;
foreach (var item in _items)
{
if (item.Status == Status.None)
{
continue;
}
if (item.Status != Status.None)
{
if (_isMouseDown)
{
////Console.WriteLine($"{e.Location.X},{e.Location.Y};{item.Bound}");
if (item.Status == Status.Resize)
{
//set mouse
/////item.Status = Status.Resize;
cursor = Cursors.SizeNWSE;
//resize
if (_isMouseDown)
{
var vector = ImageEditor.MeasureVector(_lastMousePoint, e.Location);
item.ScaleTo(_lastMousePoint, e.Location);
//resize
}
}
else if (item.Status == Status.Pan)
{
///item.Status = Status.Pan;
cursor = Cursors.SizeAll;
if (_isMouseDown)
{
var vector = ImageEditor.MeasureVector(_lastMousePoint, e.Location);
item.Pan(_lastMousePoint, e.Location);
//resize
}
}
else if (item.Status == Status.Rotate)
{
/////item.Status = Status.Rotate;
cursor = Cursors.AppStarting;
}
else
{
item.Status = Status.Selected;
}
}
else
{
////Console.WriteLine($"{e.Location.X},{e.Location.Y};{item.Bound}");
if (item.IsAroundJiao(e.Location))
{
//set mouse
item.Status = Status.Resize;
cursor = Cursors.SizeNWSE;
//resize
if (_isMouseDown)
{
var vector = ImageEditor.MeasureVector(_lastMousePoint, e.Location);
//resize
}
}
else if (item.IsOnCenter(e.Location))
{
item.Status = Status.Pan;
cursor = Cursors.SizeAll;
if (_isMouseDown)
{
var vector = ImageEditor.MeasureVector(_lastMousePoint, e.Location);
item.Pan(_lastMousePoint, e.Location);
//resize
}
}
else if (item.IsOnLineCenter(e.Location))
{
item.Status = Status.Rotate;
cursor = Cursors.AppStarting;
}
else
{
////item.Status = Status.Selected;
}
}
}
}
_lastMousePoint = e.Location;
CursorChanged?.Invoke(this, new CursorChangedEvenrArgs(cursor));
}