/// <summary>
/// 获取某一个元素的屏幕位置
/// </summary>
/// <param name="browser"></param>
/// <param name="element"></param>
/// <returns></returns>
static public Rectangle GeScreenPosition(this Browser browser, IHTMLElement element)
{
Rectangle rect = GetAbsolutePosition(browser, element);
IHTMLElement frame = GetFrame(element);
Rectangle frameRect;
while (frame != null)
{
frameRect = GetAbsolutePosition(browser, frame);
rect.Offset(frameRect.X, frameRect.Y);
frame = GetFrame(frame);
}
//frame = GetFrame(frame);
//if (frame != null)
//{
// frameRect = GetAbsolutePosition(browser, frame);
// rect.Offset(frameRect.X, frameRect.Y);
//}
int width = element.offsetWidth;
int height = element.offsetHeight;
MyBrowser my = browser.GetMyBrowser();
rect.Offset(my.PointToScreen(Point.Empty));
return(rect);
}
// Calculate image and screen coordinates of the point
private void GetImageAndScreenPoints(Point point, out Point imgPoint, out Point screenPoint)
{
Rectangle rc = myBrowser.ClientRectangle;
int width = (int)(this.width * zoom);
int height = (int)(this.height * zoom);
Point scrollPosition = myBrowser.GetScroll();
int x = (rc.Width < width) ? scrollPosition.X : (rc.Width - width) / 2;
int y = (rc.Height < height) ? scrollPosition.Y : (rc.Height - height) / 2;
int ix = Math.Min(Math.Max(x, point.X), x + width - 1);
int iy = Math.Min(Math.Max(y, point.Y), y + height - 1);
ix = (int)((ix - x) / zoom);
iy = (int)((iy - y) / zoom);
// image point
imgPoint = new Point(ix, iy);
// screen point
screenPoint = myBrowser.PointToScreen(new Point((int)(ix * zoom + x), (int)(iy * zoom + y)));
}
