The attach code works perfect in ubuntu 12.04, but in windows I get the
following error:
Marshaling clicked signal
Exception in Gtk# callback delegate
Note: Applications can use GLib.ExceptionManager.UnhandledException
to handle the exception.
System.Reflection.TargetInvocationException: Exception has been thrown
by the target of an invocatio
n. ---> System.Runtime.InteropServices.SEHException: External component
has thrown an exception.
at Gtk.PrintOperation.gtk_print_operation_run(IntPtr raw, Int32
action, IntPtr parent, IntPtr& er
ror)
at Gtk.PrintOperation.Run(PrintOperationAction action, Window parent)
at Workbench.PrintingDialog.Print(PrintOperationAction action,
String FileName)
at Workbench.PrintingDialog.PrintDialogHandleClicked(Object sender,
EventArgs e)
--- End of inner exception stack trace ---
I not have a clue about this.
May be will be better use system.drawing.printing?
Regards
--
Jesus Eguiluz
Ingeniero Electrónico.
Investigación y Desarrollo
Andes Electrónica Ltda.
+56 2 2347-8780
www.andeselec.com
using System;
namespace Workbench
{
public class PrintingDialog
{
string PrintText;
System.Collections.Generic.List<int> page_breaks;
Pango.Layout layout;
Gtk.Window win = new Gtk.Window(Gtk.WindowType.Toplevel);
public PrintingDialog()
{
}
private Gtk.PrintOperationResult Print(Gtk.PrintOperationAction action, string FileName){
Gtk.PaperSize[] PapersSizes = Gtk.PaperSize.GetPaperSizes(false);
foreach(Gtk.PaperSize pz in PapersSizes){
Console.WriteLine(pz.Name);
}
Gtk.PaperSize PaperSize= new Gtk.PaperSize("na_letter");
Gtk.PageSetup PageSetup = new Gtk.PageSetup();
PageSetup.PaperSize=PaperSize;
Gtk.PrintOperation PrintOperation = new Gtk.PrintOperation();
PrintOperation.DefaultPageSetup=PageSetup;
PrintOperation.Unit = Gtk.Unit.Mm;
PrintOperation.BeginPrint+= PrintOperationHandleBeginPrint;
PrintOperation.DrawPage+= PrintOperationHandleDrawPage;
if(action == Gtk.PrintOperationAction.Export){
PrintOperation.ExportFilename=FileName;
}
return PrintOperation.Run(action, win);
}
void PrintOperationHandleDrawPage (object o, Gtk.DrawPageArgs args)
{
int start=0;
int end=0;
if(args.PageNr==0){
start=0;
}else{
start = page_breaks[args.PageNr-1];
}
try{
end=page_breaks[args.PageNr];
}catch{
end=layout.LineCount;
}
Cairo.Context cr = args.Context.CairoContext;
cr.SetSourceRGB(0,0,0);
int i=0;
double star_pos=0;
Pango.LayoutLine line;
double BaseLine=0;
Pango.LayoutIter iter=layout.Iter;
Pango.Rectangle ink_rec;
Pango.Rectangle logical_rec;
while(true){
if(i>=start){
line=iter.Line;
iter.GetLineExtents(out ink_rec,out logical_rec);
BaseLine=iter.Baseline;
if(i==start){
star_pos=logical_rec.Y/Pango.Scale.PangoScale;
}
cr.MoveTo(logical_rec.X/Pango.Scale.PangoScale,(BaseLine/Pango.Scale.PangoScale)-star_pos);
Pango.CairoHelper.ShowLayoutLine(cr,line);
}
i++;
bool ToNextLine = iter.NextLine();
if(!((i<end) && ToNextLine)){
break;
}
}
((IDisposable)cr).Dispose();
}
void PrintOperationHandleBeginPrint (object o, Gtk.BeginPrintArgs args)
{
double width = args.Context.Width;
double height= args.Context.Height;
layout=args.Context.CreatePangoLayout();
layout.FontDescription = new Pango.FontDescription();
layout.Width = (int)(width*Pango.Scale.PangoScale);
layout.SetText(PrintText);
int NumLines = layout.LineCount;
double page_height=0;
System.Collections.Generic.List<int> page_breaks = new System.Collections.Generic.List<int>();
for(int line=0;line<NumLines;line++){
Pango.LayoutLine PangoLayoutLine = layout.GetLine(line);
Pango.Rectangle ink_rect = new Pango.Rectangle();
Pango.Rectangle logical_rect = new Pango.Rectangle();
PangoLayoutLine.GetExtents(ref ink_rect,ref logical_rect);
int x = logical_rect.X;
int y = logical_rect.Y;
int lwith = logical_rect.Width;
int lheigth = logical_rect.Height;
double line_height = lheigth/Pango.Scale.PangoScale;
page_height+=line_height;
if((page_height+line_height)>height){
page_breaks.Add(line);
page_height=0;
page_height+=line_height;
}
((Gtk.PrintOperation)o).NPages=page_breaks.Count+1;
this.page_breaks = page_breaks;
}
}
public void Run(){
win.DeleteEvent+= (o, args) => {win.Dispose();};
Gtk.HBox hbox = new Gtk.HBox(false,0);
Gtk.VBox vbox = new Gtk.VBox(false,0);
Gtk.FileChooserButton ButtonOpen = new Gtk.FileChooserButton("Open File",Gtk.FileChooserAction.Open);
ButtonOpen.SelectionChanged+= HandleSelectionChanged;
Gtk.Button PrintPreview = new Gtk.Button("Previsualizacion");
PrintPreview.Clicked+= PrintPreviewHandleClicked;
Gtk.Button PrintNow = new Gtk.Button("Imprimir Ahora");
PrintNow.Clicked+= PrintNowHandleClicked;
Gtk.Button PrintPdf = new Gtk.Button("A PDF");
PrintPdf.Clicked+= PrintPdfHandleClicked;
Gtk.Button PrintDialog = new Gtk.Button("Print Dialog");
PrintDialog.Clicked+= PrintDialogHandleClicked;
hbox.PackStart(PrintDialog,true,true,5);
hbox.PackStart(PrintNow,true,true,5);
hbox.PackStart(PrintPdf,true,true,5);
hbox.PackStart(PrintPreview,true,true,5);
vbox.PackStart(ButtonOpen,false,true,5);
vbox.PackStart(hbox,false,true,5);
win.Add(vbox);
win.ShowAll();
}
void PrintDialogHandleClicked (object sender, EventArgs e)
{
Print(Gtk.PrintOperationAction.PrintDialog,"");
}
void PrintPdfHandleClicked (object sender, EventArgs e)
{
Print(Gtk.PrintOperationAction.Export,"pdf.pdf");
}
void PrintNowHandleClicked (object sender, EventArgs e)
{
Print(Gtk.PrintOperationAction.Print,"");
}
void PrintPreviewHandleClicked (object sender, EventArgs e)
{
Print(Gtk.PrintOperationAction.Preview,"");
}
void HandleSelectionChanged (object sender, EventArgs e)
{
PrintText = System.IO.File.ReadAllText(((Gtk.FileChooserButton)sender).Filename);
}
}
}
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