Hi Attila,
You have a print dialog and click on "Print to File" to save the contents to a
PDF file and that file is not being formatted correctly and isn't the same as
what is in the print preview?
I tried a small test program. It prints well to PDF with the extra lines. Does
this program work OK or does it cause the same problem.
Eric
#!/usr/bin/env python3
#Needed for cairo context: sudo apt-get install python-gi-cairo
#Tested on Ubuntu16.04 with GTK3.18 and Python3.
import gi
gi.require_version('Gtk', '3.0')
gi.require_version('GtkSource', '3.0')
gi.require_version('PangoCairo', '1.0')
from gi.repository import Gtk, GtkSource, PangoCairo, Pango
import math
class TextBox(GtkSource.View):
def __init__(self, win):
GtkSource.View.__init__(self)
self.parent_win = win
self.page_width = 0
self.page_height = 0
self.set_wrap_mode(1)
self.set_cursor_visible(True)
self.set_vexpand(True);
self.set_hexpand(True);
self.textbuffer = self.get_buffer()
self.textbuffer.set_text("
alma\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
1")
def print_dialog(self):
operation = Gtk.PrintOperation()
#Just print 1 page.
operation.set_n_pages(1)
operation.connect("begin_print", self.begin_print)
operation.connect("draw_page", self.draw_page)
result = operation.run(Gtk.PrintOperationAction.PRINT_DIALOG,
self.parent_win)
def begin_print(self, operation, gtk_context):
self.page_width = gtk_context.get_width()
self.page_height = gtk_context.get_height()
pango_context = self.get_pango_context()
description = pango_context.get_font_description()
self.pango_layout = gtk_context.create_pango_layout()
self.pango_layout.set_font_description(description)
self.pango_layout.set_width(int(self.page_width*Pango.SCALE));
self.pango_layout.set_wrap(Pango.WrapMode.CHAR)
def draw_page(self, operation, gtk_context, page_number):
cr = gtk_context.get_cairo_context()
#Draw a rectangle.
cr.set_source_rgb(1.0, 0.0, 1.0)
cr.set_line_width(5)
cr.rectangle(40, 40, self.page_width-80, self.page_height-500)
cr.stroke()
#Show Text.
cr.set_source_rgb(0.0, 0.0, 0.0)
start = self.textbuffer.get_start_iter()
end = self.textbuffer.get_end_iter()
string = self.textbuffer.get_text(start, end, False)
self.pango_layout.set_markup(string)
PangoCairo.show_layout(cr, self.pango_layout)
class MainWindow(Gtk.Window):
def __init__(self):
Gtk.Window.__init__(self)
self.set_title("Print")
self.set_default_size(300, 700)
self.TextBox1 = TextBox(self)
self.scrolledwindow = Gtk.ScrolledWindow()
self.scrolledwindow.add(self.TextBox1)
self.button1 = Gtk.Button("Print Dialog")
self.button1.connect("clicked", self.print_dialog)
self.grid = Gtk.Grid()
self.grid.attach(self.scrolledwindow, 0, 0, 4, 4)
self.grid.attach(self.button1, 0, 5, 4, 1)
self.add(self.grid)
def print_dialog(self, button1):
self.TextBox1.print_dialog()
win = MainWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()
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