python - 如何在 GtkPrintOperation 中设置自定义页面大小？

Question

我正在使用 GtkPrintOperation 并且需要为draw-page信号自定义页面大小。

这是使用 python 的打印操作：

import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk

print_op = Gtk.PrintOperation ()
print_op.run(Gtk.PrintOperationAction.PRINT_DIALOG, window)

Answer 1

以下是设置自定义页面大小的方法：

def print_clicked (self, button):
    paper_size = Gtk.PaperSize.new_custom("1.5x", "918 x 1188", 918, 1188, Gtk.Unit.POINTS)
    page_setup = Gtk.PageSetup()
    page_setup.set_paper_size(paper_size)
    print_op = Gtk.PrintOperation ()
    print_op.set_embed_page_setup(True)
    print_op.set_default_page_setup(page_setup)
    print_op.set_n_pages( 1) # single page
    print_op.connect("draw-page", self.draw_page)
    print_op.run(Gtk.PrintOperationAction.PRINT_DIALOG, window)

def draw_page (self, print_op, print_context, page_num):
    cr = print_context.get_cairo_context()
    #draw with cairo here