public static RenderTargetBitmap GetImage(Canvas canvas, double scale = 1.0, bool avecFond = false)
{
DrawEntities.CalcMaxDimDoc();
DimMax dim = DrawEntities.dimDoc;
Size size = new Size(dim.Width(), dim.Height());
//Size size = new Size(1000, 1000);
//System.Windows.Point p0 = new System.Windows.Point(0,-200);
System.Windows.Point p0 = new System.Windows.Point(dim.minX, dim.minY);
if (size.IsEmpty)
{
return(null);
}
//RenderTargetBitmap result = new RenderTargetBitmap((int)size.Width*2, (int)size.Height*2, 96*2, 96*2, PixelFormats.Pbgra32);
RenderTargetBitmap result = new RenderTargetBitmap((int)(size.Width * scale), (int)(size.Height * scale), 96 * scale, 96 * scale, PixelFormats.Default);
DrawingVisual drawingvisual = new DrawingVisual();
using (DrawingContext context = drawingvisual.RenderOpen())
{
if (avecFond)
{
context.DrawRectangle(Brushes.White, null, new Rect(p0, size));
}
context.DrawRectangle(new VisualBrush(canvas), null, new Rect(p0, size));
context.Close();
}
result.Render(drawingvisual);
return(result);
}
public void ZoomAuto(double gridHeight, double gridWidth, double WinHeight, double WinWidth)
{
if (_child != null)
{
double hauteurVu;
double largeurVu;
double hauteurUtil;
double largeurUtil;
double scaleY;
double scaleX;
double scale;
DrawEntities.CalcMaxDimDoc();
if (DrawEntities.dimDoc.maxY == double.MinValue || DrawEntities.dimDoc.maxX == double.MinValue)
{
return;
}
hauteurVu = Math.Abs(DrawEntities.dimDoc.maxY - DrawEntities.dimDoc.minY);
largeurVu = Math.Abs(DrawEntities.dimDoc.maxX - DrawEntities.dimDoc.minX);
scaleY = (WinHeight) / (hauteurVu);
scaleX = WinWidth / (largeurVu);
scale = Math.Min(scaleY, scaleX);
scale = Scale;// 修改比例
if (scale == 0)
{
scale = 1.0;
hauteurVu = 462;
}
hauteurUtil = WinHeight - hauteurVu * scale;
largeurUtil = WinWidth - largeurVu * scale;
var tt = GetTranslateTransform(_child);
tt.X = -gridWidth * scale / 2 - DrawEntities.dimDoc.minX * scale;
tt.Y = -(gridHeight * scale) / 2 - 250 * scale + (WinHeight) + DrawEntities.dimDoc.minY * scale;
var st = GetScaleTransform(_child);
st.ScaleX = Math.Abs(scale);
st.ScaleY = Math.Abs(scale);
}
}
public void Reset(double gridHeight, double gridWidth, bool init, double ViewHeight, double ViewWidth, double WinHeight, double WinWidth)
{
if (_child != null)
{
double hauteurVu;
double largeurVu;
double scaleY;
double scaleX;
double scale;
DrawEntities.CalcMaxDimDoc();
if (init == true)
{
hauteurVu = ViewHeight;
largeurVu = ViewWidth;
if (hauteurVu == 0.0)
{
hauteurVu = 462;
}
if (largeurVu == 0.0)
{
largeurVu = 500;
}
}
else
{
hauteurVu = DrawEntities.dimDoc.maxY - DrawEntities.dimDoc.minY;
largeurVu = DrawEntities.dimDoc.maxX - DrawEntities.dimDoc.minX;
}
scaleY = ViewHeight / hauteurVu;
scaleX = ViewWidth / largeurVu;
scale = Math.Min(scaleY, scaleX);
if (scale == 0)
{
scale = 1.0;
}
var st = GetScaleTransform(_child);
st.ScaleX = scale;
st.ScaleY = scale;
var tt = GetTranslateTransform(_child);
if (WinHeight == 0)
{
WinHeight = ViewHeight;
}
if (WinWidth == 0)
{
WinWidth = ViewWidth;
}
if (init == true)
{
tt.X = -gridWidth * scale / 2;
tt.Y = -gridHeight * scale / 2;
}
else
{
tt.X = -gridWidth * scale / 2 - DrawEntities.dimDoc.minX * scale;
tt.Y = -gridHeight * scale / 2 - (WinHeight * scale) / 2 + hauteurVu * scale + DrawEntities.dimDoc.minY * scale;
}
}
}
