private void CaseChange(CASE temp)
{
if (NowCase == CASE.polygon && temp != CASE.polygon)
{
pn.FinishDraw = true;
OperaStep.AddStep(pn);
RefreshPictureBox();
pn = null;
}
else if (NowCase == CASE.Bezier && temp != CASE.Bezier)
{
bz.FinishDraw = true;
OperaStep.AddStep(bz);
RefreshPictureBox();
bz = null;
}
else if (NowCase == CASE.Bsplines && temp != CASE.Bsplines)
{
bs.FinishDraw = true;
OperaStep.AddStep(bs);
RefreshPictureBox();
bs = null;
}
NowCase = temp;
}
private void button_back_Click(object sender, EventArgs e)
{
//TODO:撤销当前步骤
OperaStep.BackStep();
RefreshPictureBox();
IsBack = true;
}
private void button_front_Click(object sender, EventArgs e)
{
//TODO:快进当前步骤
OperaStep.NextStep();
RefreshPictureBox();
}
private void RefreshPictureBox()
{
pictureBox.Image = (Image)Backgroud.Clone();
OperaStep.DrawOperation();
}
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
if (IsBack)
{
OperaStep.RemoveNullStep();
}
//设置起点
x0 = e.X;
y0 = e.Y;
FrontImage = pictureBox.Image.Clone() as Image;
//标记鼠标摁下
IsMouseDown = true;
switch (NowCase)
{
case CASE.NoOperation:
break;
case CASE.Bezier:
break;
case CASE.line:
break;
case CASE.roundness:
break;
case CASE.ellipse:
break;
case CASE.rectangle:
break;
case CASE.pencil:
break;
case CASE.clip:
break;
case CASE.selected:
if (selectedShape != null)
{
if (selectedShape.PointInIt(x0, y0))
{
CaseChange(CASE.Panning);
}
else
{
selectedShape.unSelectShape();
//CaseChange(CASE.NoOperation);
selectedShape = null;
}
}
break;
case CASE.polygon:
break;
case CASE.Panning:
break;
default:
break;
}
}
private void pictureBox1_MouseUp(object sender, MouseEventArgs e)//鼠标左键松开
{
if (NowCase == CASE.selected)
{
if (selectedShape != null)
{
selectedShape.unSelectShape();
}
selectedShape = OperaStep.SelectShape(x0, y0);
if (selectedShape != null)
{
selectedShape.InitButton();
selectedShape.SelectShape();
}
}
RefreshPictureBox();
if (IsMouseDown)
{
IsMouseDown = false;
}
switch (NowCase)
{
case CASE.NoOperation:
break;
case CASE.line:
Line l = new Line();
l.InitLine(pictureBox, color, x0, y0, e.X, e.Y);
l.Draw();
OperaStep.AddStep(l);
break;
case CASE.roundness:
Roundness r = new Roundness();
r.InitRoundness(pictureBox, color, x0, y0, e.X, e.Y);
r.Draw();
OperaStep.AddStep(r);
break;
case CASE.ellipse:
Ellipse ee = new Ellipse();
ee.InitEllipse(pictureBox, color, x0, y0, e.X, e.Y);
ee.Draw();
OperaStep.AddStep(ee);
break;
case CASE.rectangle:
Rect re = new Rect();
re.InitRectangle(pictureBox, color, x0, y0, e.X, e.Y);
re.Draw();
OperaStep.AddStep(re);
break;
case CASE.pencil:
break;
case CASE.clip:
OperaStep.ClipAllShapes(Math.Min(x0, e.X), Math.Min(y0, e.Y), Math.Max(x0, e.X), Math.Max(y0, e.Y));
RefreshPictureBox();
break;
case CASE.selected:
break;
case CASE.polygon:
pn.AddPoint(e.X, e.Y);
pn.UpdateEdge(e.X, e.Y);
pn.Draw();
break;
case CASE.Bezier:
bz.AddControlPoint(e.X, e.Y);
bz.UpdateEdge(e.X, e.Y);
bz.Draw();
break;
case CASE.Bsplines:
bs.AddControlPoint(e.X, e.Y);
bs.UpdateEdge(e.X, e.Y);
bs.Draw();
break;
case CASE.Panning:
selectedShape.Setdxdy(e.X - x0, e.Y - y0);
if (selectedShape.GetShapeType() != ShapeType.polygon)
{
selectedShape.UpdatePoint();
}
else
{
((Polygon)selectedShape).Updatedxdy();
}
selectedShape.Draw();
CaseChange(CASE.selected);
break;
default:
break;
}
}
