protected void GenerageBackImage()
{
if (mImgPictureBox.Width < 1 || this.mImgPictureBox.Height < 1)
{
return;
}
if (bakImage == null || bakImage.Size != mImgPictureBox.Size)
{
bakImage = new Bitmap(mImgPictureBox.Width, mImgPictureBox.Height);
}
Graphics g = Graphics.FromImage(bakImage);
g.FillRectangle(new SolidBrush(Color.Black), new Rectangle(0, 0, bakImage.Width, bakImage.Height));
RectangleF srcRec = new RectangleF(0, 0, (float)imageData.GetLength(1), (float)imageData.GetLength(0));
RectangleF zoomSrcRec = PubMatrix.TransformRectangle(srcRec, Jacobi_Image);
RectangleF viewRec = new RectangleF(0, 0, (float)mImgPictureBox.Width, (float)mImgPictureBox.Height);
RectangleF viewZoomRec = RectangleF.Intersect(viewRec, zoomSrcRec);
Matrix mxInvert = Jacobi_Image.Clone();
mxInvert.Invert();
RectangleF viewSrcRec = PubMatrix.TransformRectangle(viewZoomRec, mxInvert);
if (PubMatrix.ReviseImageRect(imgObject.BMP.Size, ref viewSrcRec))
{
g.DrawImage(imgObject.BMP, viewZoomRec, viewSrcRec, GraphicsUnit.Pixel);
}
mxInvert.Dispose();
g.Dispose();
}
/// <summary>
/// Mouse move.
/// Moving without button pressed or with left button pressed
/// is passed to active tool.
/// </summary>
protected virtual void mImgPictureBox_MouseMove(object sender, MouseEventArgs e)
{
if (imageData != null && imageData.Length > 0)
{
Matrix m = Jacobi_Image.Clone();
m.Invert();
Point p = PubMatrix.TransformPoint(e.Location, m);
int v = 0;
if (p.X < 0 || p.Y < 0 || p.X >= imageData.GetLength(1) || p.Y >= imageData.GetLength(0))
{
v = 0;
}
else
{
v = imageData[p.Y, p.X];
}
if (PositionAndValue != null)
{
PositionAndValue(p, v);
}
}
if (e.Button == MouseButtons.Left)
{
int dx = e.X - WLmovePoint.X;
int dy = e.Y - WLmovePoint.Y;
if (dx == 0 && dy == 0)
{
return;
}
WLmovePoint = e.Location;
imgObject.imgWindow = imgObject.imgWindow + dy * 2;
if (imgObject.imgWindow <= 0)
{
imgObject.imgWindow = 1;
}
imgObject.imgLevel = imgObject.imgLevel + dx * 2;
if (imgObject.imgLevel <= 0)
{
imgObject.imgLevel = 1;
}
imgObject.GenerateImage();
RefreshView();
}
}
