private void Control_DrawPage(object o, Gtk.DrawPageArgs args)
{
var width = args.Context.Width;
var height = args.Context.Height;
var pageNumber = args.PageNr;
var context = args.Context.CairoContext;
if (_control != null)
{
context.Save();
context.Rectangle(new Cairo.Rectangle(0, 0, width, height));
context.Clip();
var ctl = _control.GetContainerWidget();
context.Translate(0, -pageNumber * height);
#if !GTK2
ctl.Draw(context);
#endif
context.Restore();
}
using (var graphics = new Graphics(new GraphicsHandler(context, args.Context.CreatePangoContext())))
{
var e = new PrintPageEventArgs(graphics, new SizeF((float)width, (float)height), pageNumber);
Callback.OnPrintPage(Widget, e);
}
}
/// <summary>
/// OnDrawPage - Draws the Content of each Page to be printed
/// </summary>
/// <param name="obj">The Print Operation</param>
/// <param name="args">The DrawPageArgs passed by the Print Operation</param>
private void OnDrawPage(object obj, Gtk.DrawPageArgs args)
{
// Create a Print Context from the Print Operation
Gtk.PrintContext context = args.Context;
// Create a Cairo Context from the Print Context
Cairo.Context cr = context.CairoContext;
Poppler.Page pg = this.pdf.GetPage(args.PageNr);
pg.RenderForPrintingWithOptions(cr, Poppler.PrintFlags.Document);
}
public void OnDrawPage(object sender, Gtk.DrawPageArgs args)
{
using (Cairo.Context cr = args.Context.CairoContext) {
cr.MoveTo(margin_left, margin_top);
PageBreak start;
if (args.PageNr == 0)
{
start = new PageBreak(0, 0);
}
else
{
start = page_breaks [args.PageNr - 1];
}
PageBreak end;
if (args.PageNr < page_breaks.Count)
{
end = page_breaks [args.PageNr];
}
else
{
end = new PageBreak(-1, -1);
}
Gtk.PrintContext context = args.Context;
Gtk.TextIter position;
Gtk.TextIter end_iter;
Buffer.GetBounds(out position, out end_iter);
// Fast-forward to the right starting paragraph
while (position.Line < start.Paragraph)
{
position.ForwardLine();
}
bool done = position.Compare(end_iter) >= 0;
while (!done)
{
Gtk.TextIter line_end = position;
if (!line_end.EndsLine())
{
line_end.ForwardToLineEnd();
}
int paragraph_number = position.Line;
int indentation;
using (Pango.Layout layout = CreateParagraphLayout(
context, position, line_end, out indentation)) {
for (int line_number = 0;
line_number < layout.LineCount && !done;
line_number++)
{
// Skip the lines up to the starting line in the
// first paragraph on this page
if ((paragraph_number == start.Paragraph) &&
(line_number < start.Line))
{
continue;
}
// Break as soon as we hit the end line
if ((paragraph_number == end.Paragraph) &&
(line_number == end.Line))
{
done = true;
break;
}
Pango.LayoutLine line = layout.Lines [line_number];
Pango.Rectangle ink_rect = Pango.Rectangle.Zero;
Pango.Rectangle logical_rect = Pango.Rectangle.Zero;
line.GetExtents(ref ink_rect, ref logical_rect);
cr.MoveTo(margin_left + indentation,
cr.CurrentPoint.Y);
int line_height = Pango.Units.ToPixels(logical_rect.Height);
Cairo.PointD new_line_point = new Cairo.PointD(
margin_left + indentation,
cr.CurrentPoint.Y + line_height);
Pango.CairoHelper.ShowLayoutLine(cr, line);
cr.MoveTo(new_line_point);
}
}
position.ForwardLine();
done = done || position.Compare(end_iter) >= 0;
}
int total_height = (int)args.Context.Height;
int total_width = (int)args.Context.Width;
int footer_height = 0;
Cairo.PointD footer_anchor;
using (Pango.Layout pages_footer = CreatePagenumbersLayout(
args.Context, args.PageNr + 1, page_breaks.Count + 1)) {
Pango.Rectangle ink_footer_rect;
Pango.Rectangle logical_footer_rect;
pages_footer.GetExtents(out ink_footer_rect, out logical_footer_rect);
footer_anchor = new Cairo.PointD(
CmToPixel(0.5, args.Context.DpiX),
total_height - margin_bottom);
footer_height = Pango.Units.ToPixels(logical_footer_rect.Height);
cr.MoveTo(
total_width - Pango.Units.ToPixels(logical_footer_rect.Width) -
CmToPixel(0.5, args.Context.DpiX),
footer_anchor.Y);
Pango.CairoHelper.ShowLayoutLine(cr, pages_footer.Lines [0]);
}
cr.MoveTo(footer_anchor);
Pango.CairoHelper.ShowLayoutLine(cr, timestamp_footer.Lines [0]);
cr.MoveTo(CmToPixel(0.5, args.Context.DpiX),
total_height - margin_bottom - footer_height);
cr.LineTo(total_width - CmToPixel(0.5, args.Context.DpiX),
total_height - margin_bottom - footer_height);
cr.Stroke();
}
}
