public override async void OnDrawBegin(IModel sender, PointerPoint args)
{
var layer = sender.CurrentLayer;
if (Clipper.IsCliping)
{
layer.getRect(out Rect orec, out WriteableBitmap obb);
var Bitmap = new WriteableBitmap((int)DrawRect.Width, (int)DrawRect.Height);
IGrap.copyImg(obb, Bitmap, (int)orec.X, (int)orec.Y);
layer.Child = Clipper.createPolygon(Bitmap);
o = (Point)layer.Child.Tag;
a = (Vec2)args.Position;
obmp = layer.Bitmap;
cbmp = await(tt = layer.Child.Render());
if (layer.Bitmap != null)
{
layer.Bitmap = layer.Bitmap.Clone();
IGrap.delImg(cbmp, layer.Bitmap, (int)(o.X - orec.X), (int)(o.Y - orec.Y));
layer.Bitmap.Invalidate();
}
//((DrawPanel)sender).X.Source = cbmp;
}
else
{
o = layer.Point;
a = args.Position;
}
}
public override async void OnToolState(IModel sender, bool state)
{
var layer = sender.CurrentLayer;
if (!layer.IsEdit || !layer.IsShow)
{
return;
}
if (layer.Bitmap == null)
{
return;
}
Debug.WriteLine("state:" + state);
if (state)
{
layer.getRect(out orec, out obb);
if (Clipper.IsCliping)
{
VModel.vm.Loading = true;
//拷贝选区
var Bitmap = new WriteableBitmap((int)DrawRect.Width, (int)DrawRect.Height);
IGrap.copyImg(obb, Bitmap, (int)orec.X, (int)orec.Y);
layer.Child = Clipper.createPolygon(Bitmap);
var p = (Point)layer.Child.Tag;
var xb = await(layer.Child.Render());
Clipper.Points.Clear();
layer.Child = null;
if (xb != null)
{
var i = sender.Layers.IndexOf(layer);
var nb = obb;
var ob = obb;
if (layer.Bitmap != null)
{
nb = layer.Bitmap.Clone();
IGrap.delImg(xb, nb, (int)(p.X - orec.X), (int)(p.Y - orec.Y));
nb.Invalidate();
}
obb = xb;
orec = new Rect(p.X, p.Y, xb.PixelWidth, xb.PixelHeight);
Exec.Do(new Exec()
{
exec = () => {
sender.Layers[i].Bitmap = nb;
sender.Layers.Insert(i, new LayerModel()
{
Bitmap = xb,
X = p.X,
Y = p.Y
});
sender.CurrentLayer = sender.Layers[i];
},
undo = () => {
sender.Layers.RemoveAt(i);
sender.CurrentLayer = sender.Layers[i];
sender.CurrentLayer.Bitmap = ob;
}
});
}
VModel.vm.Loading = false;
}
sender.ElemArea.Child = CreateRect(sender);
ch = false;
}
else
{
sender.ElemArea.Child = null;
if (!ch)
{
return;
}
var vc = new CompositeTransform()
{
Rotation = com.Rotation,
ScaleX = com.ScaleX,
ScaleY = com.ScaleY,
CenterX = com.TranslateX + layer.W / 2,
CenterY = com.TranslateY + layer.H / 2
};
var or = orec;
var ob = obb;
layer.getRect(out Rect nr, out WriteableBitmap nb);
if (com.ScaleX != 1 || com.ScaleY != 1 || com.Rotation != 0)
{
var elem = (FrameworkElement)((DrawPanel)sender).ITEMS.ContainerFromItem(layer);
VModel.vm.Loading = true;
var b = await(elem).Render();
VModel.vm.Loading = false;
var vr = vc.TransformBounds(nr);
nr = RectHelper.Intersect(DrawRect, vr);
if (nr.IsEmpty)
{
nb = null;
layer.setRect(nr, nb);
}
else
{
nb = new WriteableBitmap((int)nr.Width, (int)nr.Height);
IGrap.addImg(b, nb, (int)(vr.X - nr.X), (int)(vr.Y - nr.Y));
layer.setRect(nr, nb);
}
com.Rotation = 0;
com.ScaleX = 1;
com.ScaleY = 1;
}
var i = sender.Layers.IndexOf(sender.CurrentLayer);
Exec.Save(new Exec()
{
exec = () => {
sender.Layers[i].setRect(nr, nb);
},
undo = () => {
sender.Layers[i].setRect(or, ob);
}
});
}
}