public static LayoutBitmap ConvertElementToBitmap(LayoutElement le, string filename)
{
if (le is LayoutBitmap)
{
return(null);
}
int padding = le is LayoutLegend ? 10 : 0;
int width = Convert.ToInt32(le.SizeF.Width * 3 + 0.5) + padding;
int height = Convert.ToInt32(le.SizeF.Height * 3 + 0.5);
if (le is LayoutMap)
{
width = Convert.ToInt32(width * ScreenHelper.LogicToScreenDpi);
height = Convert.ToInt32(height * ScreenHelper.LogicToScreenDpi);
}
using (var temp = new Bitmap(width, height, PixelFormat.Format32bppArgb))
{
temp.SetResolution(96, 96);
temp.MakeTransparent();
using (var g = Graphics.FromImage(temp))
{
g.PageUnit = GraphicsUnit.Pixel;
g.ScaleTransform(300F / 100F, 300F / 100F);
if (!(le is LayoutMap))
{
g.TranslateTransform(-le.LocationF.X, -le.LocationF.Y);
}
le.DrawElement(g, false, false);
}
temp.SetResolution(300, 300);
temp.Save(filename);
}
var bmp = new LayoutBitmap
{
Rectangle = le.Rectangle,
Name = le.Name,
Filename = filename,
Initialized = true
};
return(bmp);
}
/// <summary>
/// Draws a single element of the layout.
/// </summary>
private void DrawElement(Graphics g, LayoutElement le, Rectangle invalRect, int index)
{
bool panning = _mouseMode == MouseMode.PanMap && IsSelected(index) && le is LayoutMap &&
_selectedLayoutElements.Count == 1;
if (!panning && DrawMapResizing(index, g))
{
return;
}
if (le is LayoutMap)
{
var pnt = PaperToScreen(le.LocationF);
g.TranslateTransform(Convert.ToInt32(pnt.X), Convert.ToInt32(pnt.Y));
if (panning)
{
// setting clip to the original rectangle
var r = PaperToScreen(le.Rectangle);
g.SetClip(new RectangleF(0f, 0f, r.Width, r.Height));
pnt.X += _mouseBox.Width;
pnt.Y += _mouseBox.Height;
// translating to new origin of buffer
g.ResetTransform();
g.TranslateTransform(Convert.ToInt32(pnt.X), Convert.ToInt32(pnt.Y));
}
g.ScaleTransform(_zoom, _zoom);
}
else
{
g.TranslateTransform(_paperLocation.X, _paperLocation.Y);
g.ScaleTransform(ScreenHelper.LogicToScreenDpi * _zoom, ScreenHelper.LogicToScreenDpi * _zoom);
}
le.DrawElement(g, false, false);
g.ResetClip();
g.ResetTransform();
g.TranslateTransform(-invalRect.X, -invalRect.Y);
}