private void SetPictureElementSize(PictureElement pElement)
{
float w = pElement.Size.Width;
float h = pElement.Size.Height;
_layoutRuntime.Pixel2Layout(ref w, ref h);
pElement.Size = new System.Drawing.SizeF(w, h);
}
/// <summary>
/// 应用通过参数传进来的位图
/// </summary>
/// <param name="bitmap"></param>
private void AddBitmapToLayout(Bitmap bitmap)
{
if (bitmap == null)
{
return;
}
PictureElement picEle = new PictureElement(bitmap);
AdjustElementSize(bitmap, ref picEle);
float a = (_layout.Size.Width - picEle.Size.Width) / 2f;
float b = (_layout.Size.Height - picEle.Size.Height) / 2f;
picEle.Location = new PointF(a, b);
_layout.Elements.Add(picEle);
}
private IElement AcceptBitmap(Bitmap bm, string name, DragEventArgs e)
{
if (bm == null)
{
return(null);
}
PictureElement pElement = new PictureElement(bm);
if (name != null)
{
pElement.Name = name;
}
pElement.Location = GetMouseLocation(e);
SetPictureElementSize(pElement);
_layout.Elements.Add(pElement);
Render();
return(pElement);
}
private void AdjustElementSize(Bitmap bitmap, ref PictureElement picEle)
{
float orginWid = bitmap.Size.Width;
float orginHei = bitmap.Size.Height;
if (orginWid == 0 || orginHei == 0)
{
return;
}
if (orginWid <= _layout.Size.Width && orginHei <= _layout.Size.Height)
{
picEle.Size = new SizeF(bitmap.Size.Width * 0.8f, bitmap.Size.Height * 0.8f);
return;
}
float a = (float)_layout.Size.Width;
float b = (float)_layout.Size.Height;
float scaleX = (0.8f * a) / orginWid;
float scaleY = (0.8f * b) / orginHei;
float scale = Math.Min(scaleX, scaleY);
picEle.Size = new SizeF(orginWid * scale, orginHei * scale);
}