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pdfarranger.py
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pdfarranger.py
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# Copyright (C) 2008-2017 Konstantinos Poulios, 2018-2019 Jerome Robert
#
# pdfarranger is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import os
import shutil # for file operations like whole directory deletion
import sys # for processing of command line args
import tempfile
import signal
import mimetypes
import warnings
import traceback
import locale # for multilanguage support
import gettext
import gc
import subprocess
import ctypes
import pikepdf
from urllib.request import url2pathname
from functools import lru_cache
sharedir = os.path.join(sys.prefix, 'share')
basedir = '.'
if getattr(sys, 'frozen', False):
basedir = os.path.dirname(sys.executable)
sharedir = os.path.join(basedir, 'share')
elif sys.argv[0]:
execdir = os.path.dirname(os.path.realpath(sys.argv[0]))
basedir = os.path.dirname(execdir)
sharedir = os.path.join(basedir, 'share')
if not os.path.exists(sharedir):
sharedir = basedir
localedir = os.path.join(sharedir, 'locale')
if not os.path.exists(localedir):
# Assume we are in development mode
localedir = os.path.join(basedir, 'build', 'mo')
try:
locale.setlocale(locale.LC_ALL, '')
except locale.Error:
pass # Gtk already prints a warning
DOMAIN = 'pdfarranger'
ICON_ID = 'com.github.jeromerobert.' + DOMAIN
if hasattr(locale, 'bindtextdomain'):
# glibc
locale.bindtextdomain(DOMAIN, localedir)
try:
locale.bind_textdomain_codeset(DOMAIN, 'UTF-8')
except AttributeError:
pass
else:
# Windows or musl
libintl = ctypes.cdll['libintl-8' if os.name == 'nt' else 'libintl.so.8']
libintl.bindtextdomain(DOMAIN.encode(), localedir.encode(sys.getfilesystemencoding()))
libintl.bind_textdomain_codeset(DOMAIN.encode(), 'UTF-8'.encode())
del libintl
APPNAME = 'PDF Arranger'
VERSION = '1.7.1'
WEBSITE = 'https://github.com/pdfarranger/pdfarranger'
if os.name == 'nt':
# Add support for dnd to other instance and insert file at drop location in Windows
import keyboard # to get control key state when drag to other instance
os.environ['GDK_WIN32_USE_EXPERIMENTAL_OLE2_DND'] = 'true'
# Use client side decorations. Will also enable window moving with Win + left/right
os.environ['GTK_CSD'] = '1'
import gi
# check that we don't need GObject.threads_init()
gi.check_version('3.10.2')
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
if Gtk.check_version(3, 12, 0):
raise Exception('You do not have the required version of GTK+ installed. ' +
'Installed GTK+ version is ' +
'.'.join([str(Gtk.get_major_version()),
str(Gtk.get_minor_version()),
str(Gtk.get_micro_version())]) +
'. Required GTK+ version is 3.12 or higher.')
from gi.repository import Gdk
from gi.repository import GObject # for using custom signals
from gi.repository import Gio # for inquiring mime types information
from gi.repository import GLib
from gi.repository import Pango
if os.name == 'nt' and GLib.get_language_names():
os.environ['LANG'] = GLib.get_language_names()[0]
gettext.bindtextdomain(DOMAIN, localedir)
gettext.textdomain(DOMAIN)
_ = gettext.gettext
from . import undo
from . import exporter
from . import metadata
from . import croputils
from . import splitter
from .iconview import CellRendererImage
from .iconview import IconviewCursor
from .iconview import IconviewDragSelect
from .config import Config
from .core import img2pdf_supported_img, PageAdder, PDFDocError, PDFRenderer
GObject.type_register(CellRendererImage)
def _install_workaround_bug29():
""" Install a workaround for https://gitlab.gnome.org/GNOME/pygobject/issues/29 """
try:
gi.check_version('3.29.2')
except ValueError:
def func(self, entries):
# simplified version of https://gitlab.gnome.org/GNOME/pygobject/commit/d0b219c
for d in entries:
param_type = None if len(d) < 3 else GLib.VariantType.new(d[2])
action = Gio.SimpleAction(name=d[0], parameter_type=param_type)
action.connect("activate", d[1], None)
self.add_action(action)
Gtk.ApplicationWindow.add_action_entries = func
_install_workaround_bug29()
def warn_dialog(func):
""" Decorator which redirect warnings module messages to a gkt MessageDialog """
class ShowWarning:
def __init__(self):
self.buffer = ""
def __call__(self, message, category, filename, lineno, f=None, line=None):
s = warnings.formatwarning(message, category, filename, lineno, line)
if sys.stderr is not None:
sys.stderr.write(s + '\n')
self.buffer += str(message) + '\n'
def wrapper(*args, **kwargs):
self = args[0]
backup_showwarning = warnings.showwarning
warnings.showwarning = ShowWarning()
try:
func(*args, **kwargs)
if len(warnings.showwarning.buffer) > 0:
self.error_message_dialog(warnings.showwarning.buffer, Gtk.MessageType.WARNING)
finally:
warnings.showwarning = backup_showwarning
return wrapper
def malloc_trim():
"""Release free memory from the heap."""
if os.name == 'nt':
return
mtrim = malloc_trim_available()
if mtrim:
mtrim()
@lru_cache()
def malloc_trim_available():
try:
ctypes.CDLL('libc.so.6').malloc_trim(0)
except (FileNotFoundError, AttributeError, OSError):
print('malloc_trim not available. Application may not release memory properly.')
return
def mtrim():
ctypes.CDLL('libc.so.6').malloc_trim(0)
return mtrim
def get_file_path_from_uri(uri):
"""Extracts the path from an uri"""
uri = uri[5:] # remove 'file:'
path = url2pathname(uri) # escape special chars
path = path.strip('\r\n\x00\x2F') # remove \r\n and NULL and \
if os.name == 'posix':
path = '/' + path
return path
class PdfArranger(Gtk.Application):
# Drag and drop ID for pages coming from the same pdfarranger instance
MODEL_ROW_INTERN = 1001
# Drag and drop ID for pages coming from an other pdfarranger instance
MODEL_ROW_EXTERN = 1002
# Drag and drop ID for pages coming from a non-pdfarranger application
TEXT_URI_LIST = 1003
TARGETS_IV = [Gtk.TargetEntry.new('MODEL_ROW_INTERN', Gtk.TargetFlags.SAME_WIDGET,
MODEL_ROW_INTERN),
Gtk.TargetEntry.new('MODEL_ROW_EXTERN', Gtk.TargetFlags.OTHER_APP,
MODEL_ROW_EXTERN)]
TARGETS_SW = [Gtk.TargetEntry.new('text/uri-list', 0, TEXT_URI_LIST),
Gtk.TargetEntry.new('MODEL_ROW_EXTERN', Gtk.TargetFlags.OTHER_APP,
MODEL_ROW_EXTERN)]
def __init__(self, *args, **kwargs):
super().__init__(*args, application_id="com.github.jeromerobert.pdfarranger",
flags=Gio.ApplicationFlags.NON_UNIQUE |
Gio.ApplicationFlags.HANDLES_COMMAND_LINE,
**kwargs)
# Create the temporary directory
self.tmp_dir = tempfile.mkdtemp(DOMAIN)
os.chmod(self.tmp_dir, 0o700)
# Defining instance attributes
# The None values will be set later in do_activate
self.config = Config(DOMAIN)
self.uiXML = None
self.window = None
self.sw = None
self.model = None
self.undomanager = None
self.iconview = None
self.cellthmb = None
self.status_bar = None
self.popup = None
self.is_unsaved = False
self.zoom_level = None
self.zoom_level_old = 0
self.zoom_scale = None
self.zoom_full_page = False
self.render_id = None
self.id_scroll_to_sel = None
self.target_is_intern = True
self.export_directory = os.path.expanduser('~')
self.import_directory = self.export_directory
self.nfile = 0
self.iv_auto_scroll_direction = 0
self.iv_auto_scroll_timer = None
self.vp_css_margin = 0
self.pdfqueue = []
self.metadata = {}
self.pressed_button = None
self.click_path = None
self.rendering_thread = None
self.export_file = None
self.drag_path = None
self.drag_pos = Gtk.IconViewDropPosition.DROP_RIGHT
self.sb_timeout_id = None
self.window_width_old = 0
self.set_iv_visible_id = None
# Clipboard for cut copy paste
self.clipboard_default = Gtk.Clipboard.get(Gdk.SELECTION_CLIPBOARD)
if os.name == 'posix':
# "private" clipboard does not work in Windows so we can't use it here
self.clipboard_pdfarranger = Gtk.Clipboard.get(Gdk.Atom.intern('_SELECTION_PDFARRANGER',
False))
self.add_arguments()
def add_arguments(self):
self.set_option_context_summary(_(
"PDF Arranger is a small python-gtk application, which helps the "
"user to merge or split pdf documents and rotate, crop and rearrange "
"their pages using an interactive and intuitive graphical interface. "
"It is a frontend for pikepdf."
))
self.add_main_option(
"version",
ord("v"),
GLib.OptionFlags.NONE,
GLib.OptionArg.NONE,
_("Print the version of PDF Arranger and exit"),
None,
)
self.add_main_option(
GLib.OPTION_REMAINING,
0,
GLib.OptionFlags.NONE,
GLib.OptionArg.STRING_ARRAY,
_("File(s) to open"),
"[FILES]",
)
def __build_from_file(self, path):
""" Return the path of a resource file """
# TODO: May be we could use Application.set_resource_base_path and
# get_menu_by_id in place of that
# Trying different possible locations
f = os.path.join(basedir, 'share', DOMAIN, path)
if not os.path.exists(f):
f = os.path.join(basedir, 'data', path)
if not os.path.exists(f):
f = '/usr/share/{}/{}'.format(DOMAIN, path)
if not os.path.exists(f):
f = '/usr/local/share/{}/{}'.format(DOMAIN, path)
b = Gtk.Builder()
b.set_translation_domain(DOMAIN)
b.add_from_file(f)
b.connect_signals(self)
return b
def __create_menus(self):
b = self.__build_from_file("menu.ui")
self.config.set_actions(b)
self.popup = Gtk.Menu.new_from_model(b.get_object("popup_menu"))
self.popup.attach_to_widget(self.window, None)
main_menu = self.uiXML.get_object("main_menu_button")
main_menu.set_menu_model(b.get_object("main_menu"))
def __create_actions(self):
# Both Gtk.ApplicationWindow and Gtk.Application are Gio.ActionMap. Some action are window
# related some other are application related. As pdfarrager is a single window app does not
# matter that much.
self.window.add_action_entries([
('rotate', self.rotate_page_action, 'i'),
('delete', self.on_action_delete),
('duplicate', self.duplicate),
('page-format', self.page_format_dialog),
('crop-white-borders', self.crop_white_borders),
('export-selection', self.choose_export_selection_pdf_name, 'i'),
('export-all', self.on_action_export_all),
('reverse-order', self.reverse_order),
('save', self.on_action_save),
('save-as', self.on_action_save_as),
('new', self.on_action_new),
('import', self.on_action_add_doc_activate),
('zoom', self.zoom_change, 'i'),
('quit', self.on_quit),
('undo', self.undomanager.undo),
('redo', self.undomanager.redo),
('split', self.split_pages),
('metadata', self.edit_metadata),
('cut', self.on_action_cut),
('copy', self.on_action_copy),
('paste', self.on_action_paste, 'i'),
('select', self.on_action_select, 'i'),
('select-same-file', self.on_action_select, 'i'),
('select-same-format', self.on_action_select, 'i'),
('about', self.about_dialog),
("insert-blank-page", self.insert_blank_page),
("generate-booklet", self.generate_booklet),
])
main_menu = self.uiXML.get_object("main_menu_button")
self.window.add_action(Gio.PropertyAction.new("main-menu", main_menu, "active"))
for a, k in self.config.get_accels():
self.set_accels_for_action("win." + a, [k] if isinstance(k, str) else k)
# Disable actions
self.iv_selection_changed_event()
self.window_focus_in_out_event()
self.__update_num_pages(self.iconview.get_model())
self.undomanager.set_actions(self.window.lookup_action('undo'),
self.window.lookup_action('redo'))
def insert_blank_page(self, _action, _option, _unknown):
size = (21 / 2.54 * 72, 29.7 / 2.54 * 72) # A4 by default
selection = self.iconview.get_selected_items()
selection.sort()
model = self.iconview.get_model()
if len(selection) > 0:
size = model[selection[-1]][0].size_in_points()
page_size = croputils.BlankPageDialog(size, self.window).run_get()
if page_size is not None:
self._insert_pages(model, exporter.create_blank_page(self.tmp_dir, page_size), selection)
def _insert_pages(self, model, file, selection):
adder = PageAdder(self)
if len(selection) > 0:
adder.move(Gtk.TreeRowReference.new(model, selection[-1]), False)
adder.addpages(file)
adder.commit(select_added=False, add_to_undomanager=True)
def generate_booklet(self, _, __, ___):
self.undomanager.commit("generate booklet")
model = self.iconview.get_model()
selection = self.iconview.get_selected_items()
selection.sort(key=lambda x: x.get_indices()[0])
ref_list = [Gtk.TreeRowReference.new(model, path)
for path in selection]
pages = [model.get_value(model.get_iter(ref.get_path()), 0)
for ref in ref_list]
# We need a multiple of 4
blank_page_count = 0 if len(pages) % 4 == 0 else 4 - len(pages) % 4
if blank_page_count > 0:
file = exporter.create_blank_page(self.tmp_dir, pages[0].size)
with self.model_lock:
for _ in range(blank_page_count):
self._insert_pages(model, file, selection)
added_page_index = selection[-1].get_indices()[-1] + 1
# Fetch the additional blank pages and remove them from the model.
added_page = model.get_value(model.get_iter(added_page_index), 0)
pages.append(added_page)
model.remove(model.get_iter(added_page_index))
self.clear_selected()
adder = PageAdder(self)
booklet = exporter.generate_booklet(self.pdfqueue, self.tmp_dir, pages)
adder.addpages(booklet)
adder.commit(False, False)
self.silent_render()
@staticmethod
def __create_filters(file_type_list):
filter_list = []
f_supported = Gtk.FileFilter()
f_supported.set_name(_('All supported files'))
filter_list.append(f_supported)
if 'pdf' in file_type_list:
f_pdf = Gtk.FileFilter()
f_pdf.set_name(_('PDF files'))
for f in [f_pdf, f_supported]:
f.add_pattern('*.pdf')
f.add_mime_type('application/pdf')
filter_list.append(f_pdf)
if 'all' in file_type_list:
f = Gtk.FileFilter()
f.set_name(_('All files'))
f.add_pattern('*')
filter_list.append(f)
if 'img2pdf' in file_type_list:
f_img = Gtk.FileFilter()
f_img.set_name(_('Supported image files'))
for f in [f_img, f_supported]:
for mime in img2pdf_supported_img:
f.add_mime_type(mime)
for extension in mimetypes.guess_all_extensions(mime):
f.add_pattern('*' + extension)
filter_list.append(f_img)
return filter_list
def do_activate(self):
""" https://lazka.github.io/pgi-docs/Gio-2.0/classes/Application.html#Gio.Application.do_activate """
# TODO: huge method that should be splitted
iconsdir = os.path.join(sharedir, 'icons')
if not os.path.exists(iconsdir):
iconsdir = os.path.join(sharedir, 'data', 'icons')
Gtk.IconTheme.get_default().append_search_path(iconsdir)
Gtk.Window.set_default_icon_name(ICON_ID)
self.uiXML = self.__build_from_file(DOMAIN + '.ui')
# Create the main window, and attach delete_event signal to terminating
# the application
self.window = self.uiXML.get_object('main_window')
self.window.set_title(APPNAME)
self.window.set_border_width(0)
self.window.set_application(self)
if self.config.maximized():
self.window.maximize()
self.window.set_default_size(*self.config.window_size())
self.window.move(*self.config.position())
self.window.connect('delete_event', self.on_quit)
self.window.connect('focus_in_event', self.window_focus_in_out_event)
self.window.connect('focus_out_event', self.window_focus_in_out_event)
self.window.connect('configure_event', self.window_configure_event)
self.window.connect('button_release_event', self.window_button_release_event)
self.window.connect('enter_notify_event', self.window_enter_notify_event)
self.window.connect('window_state_event', self.window_state_event)
if hasattr(GLib, "unix_signal_add"):
GLib.unix_signal_add(GLib.PRIORITY_DEFAULT, signal.SIGINT, self.close_application)
# Create a scrolled window to hold the thumbnails-container
self.sw = self.uiXML.get_object('scrolledwindow')
self.sw.drag_dest_set(Gtk.DestDefaults.HIGHLIGHT |
Gtk.DestDefaults.DROP,
self.TARGETS_SW,
Gdk.DragAction.COPY)
self.sw.connect('drag_data_received', self.sw_dnd_received_data)
self.sw.connect('button_press_event', self.sw_button_press_event)
self.sw.connect('scroll_event', self.sw_scroll_event)
# Create ListStore model and IconView
self.model = Gtk.ListStore(GObject.TYPE_PYOBJECT, str)
self.undomanager = undo.Manager(self)
self.zoom_set(self.config.zoom_level())
self.iconview = Gtk.IconView(self.model)
self.iconview.clear()
self.iconview.set_item_width(-1)
self.cellthmb = CellRendererImage()
self.cellthmb.set_padding(3, 3)
self.cellthmb.set_alignment(0.5, 0.5)
self.iconview.pack_start(self.cellthmb, False)
self.iconview.set_cell_data_func(self.cellthmb, self.set_cellrenderer_data, None)
self.iconview.set_text_column(1)
cell_text_renderer = self.iconview.get_cells()[1]
cell_text_renderer.props.ellipsize = Pango.EllipsizeMode.MIDDLE
self.iconview.set_selection_mode(Gtk.SelectionMode.MULTIPLE)
self.iconview.enable_model_drag_source(Gdk.ModifierType.BUTTON1_MASK,
self.TARGETS_IV,
Gdk.DragAction.COPY |
Gdk.DragAction.MOVE)
self.iconview.enable_model_drag_dest(self.TARGETS_IV,
Gdk.DragAction.COPY |
Gdk.DragAction.MOVE)
self.iconview.connect('drag_begin', self.iv_drag_begin)
self.iconview.connect('drag_data_get', self.iv_dnd_get_data)
self.iconview.connect('drag_data_received', self.iv_dnd_received_data)
self.iconview.connect('drag_data_delete', self.iv_dnd_data_delete)
self.iconview.connect('drag_motion', self.iv_dnd_motion)
self.iconview.connect('drag_leave', self.iv_dnd_leave_end)
self.iconview.connect('drag_end', self.iv_dnd_leave_end)
self.iconview.connect('button_press_event', self.iv_button_press_event)
self.iconview.connect('motion_notify_event', self.iv_motion)
self.iconview.connect('button_release_event', self.iv_button_release_event)
self.id_selection_changed_event = self.iconview.connect('selection_changed',
self.iv_selection_changed_event)
self.iconview.connect('key_press_event', self.iv_key_press_event)
self.sw.add_with_viewport(self.iconview)
self.model.connect('row-inserted', self.__update_num_pages)
self.model.connect('row-deleted', self.__update_num_pages)
self.model.connect('row-deleted', self.reset_export_file)
# Progress bar
self.progress_bar = self.uiXML.get_object('progressbar')
# Status bar.
self.status_bar = self.uiXML.get_object('statusbar')
# Vertical scrollbar
vscrollbar = self.sw.get_vscrollbar()
vscrollbar.connect('value_changed', self.vscrollbar_value_changed)
# Define window callback function and show window
self.window.connect('check_resize', self.on_window_size_request)
self.window.show_all()
self.progress_bar.hide()
# Change iconview color background
style_context_sw = self.sw.get_style_context()
color_selected = self.iconview.get_style_context() \
.get_background_color(Gtk.StateFlags.SELECTED)
color_prelight = color_selected.copy()
color_prelight.alpha = 0.3
for state in (Gtk.StateFlags.NORMAL, Gtk.StateFlags.ACTIVE):
self.iconview.override_background_color(
state, style_context_sw.get_background_color(state))
self.iconview.override_background_color(Gtk.StateFlags.SELECTED,
color_selected)
self.iconview.override_background_color(Gtk.StateFlags.PRELIGHT,
color_prelight)
# Set outline properties for iconview items i.e. cursor look
style_provider = Gtk.CssProvider()
css_data = """
iconview {
outline-color: alpha(currentColor, 0.8);
outline-style: dashed;
outline-offset: -2px;
outline-width: 2px;
-gtk-outline-radius: 2px;
}
"""
style_provider.load_from_data(bytes(css_data.encode()))
Gtk.StyleContext.add_provider_for_screen(
Gdk.Screen.get_default(),
style_provider,
Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION)
GObject.type_register(PDFRenderer)
GObject.signal_new('update_thumbnail', PDFRenderer, GObject.SignalFlags.RUN_FIRST, None,
[GObject.TYPE_PYOBJECT, GObject.TYPE_PYOBJECT, GObject.TYPE_PYOBJECT,
GObject.TYPE_PYOBJECT, GObject.TYPE_BOOLEAN])
self.set_unsaved(False)
self.__create_actions()
self.__create_menus()
self.iv_cursor = IconviewCursor(self)
self.iv_drag_select = IconviewDragSelect(self)
def do_command_line(self, command_line):
options = command_line.get_options_dict()
# Print PDF Arranger version and exit
if options.contains("version"):
print(APPNAME + "-" + VERSION)
print("pikepdf-" + pikepdf.__version__)
print("libqpdf-" + pikepdf.__libqpdf_version__)
return 0
self.activate()
if options.lookup_value(GLib.OPTION_REMAINING):
files = [Gio.File.new_for_commandline_arg(i)
for i in options.lookup_value(GLib.OPTION_REMAINING)]
a = PageAdder(self)
for f in files:
try:
a.addpages(f.get_path())
except FileNotFoundError as e:
print(e, file=sys.stderr)
self.error_message_dialog(e)
a.commit(select_added=False, add_to_undomanager=True)
return 0
@staticmethod
def set_cellrenderer_data(_column, cell, model, it, _data=None):
cell.set_page(model.get_value(it, 0))
def render(self):
self.render_id = None
alive = self.quit_rendering()
if alive:
self.silent_render()
return
self.visible_range = self.get_visible_range2()
columns_nr = self.iconview.get_columns()
self.rendering_thread = PDFRenderer(self.model, self.pdfqueue,
self.visible_range , columns_nr)
self.rendering_thread.connect('update_thumbnail', self.update_thumbnail)
self.rendering_thread.start()
def quit_rendering(self):
"""Quit rendering."""
if self.rendering_thread:
self.rendering_thread.quit = True
# If thread is busy with page.render(cr) it might take some time for thread to quit.
# Therefore set a timeout here so app continues to stay responsive.
self.rendering_thread.join(timeout=0.15)
return self.rendering_thread.is_alive()
def silent_render(self):
"""Render when silent i.e. when no call for last 149ms.
Improves app responsiveness by not calling render too frequently.
"""
if self.render_id:
GObject.source_remove(self.render_id)
self.render_id = GObject.timeout_add(149, self.render)
def model_lock(self):
"""Acquire model lock (before any add/delete/reorder)."""
if self.rendering_thread:
self.rendering_thread.model_lock.acquire()
def model_unlock(self):
"""Release model lock."""
if self.rendering_thread and self.rendering_thread.model_lock.locked():
self.rendering_thread.model_lock.release()
def vscrollbar_value_changed(self, _vscrollbar):
"""Render when vertical scrollbar value has changed."""
self.silent_render()
def window_configure_event(self, _window, event):
"""Handle window size and position changes."""
if self.window_width_old not in [0, event.width] and len(self.model) > 0:
if self.set_iv_visible_id:
GObject.source_remove(self.set_iv_visible_id)
self.set_iv_visible_id = GObject.timeout_add(1500, self.set_iconview_visible)
self.iconview.set_visible(False)
self.window_width_old = event.width
if len(self.model) > 1: # Don't trigger extra render after first page is inserted
self.silent_render()
def window_button_release_event(self, _window, event):
"""Mouse button release on window."""
if event.button == 1:
self.set_iconview_visible(timeout=False)
def window_enter_notify_event(self, _window, _event):
"""Mouse pointer enter window."""
if os.name == 'nt':
# In Windows this is triggered when dragging window edge. Instead the release event
# is usually triggered when releasing button.
return
self.set_iconview_visible(timeout=False)
def window_state_event(self, _window, _event):
"""Window state change."""
GObject.timeout_add(100, self.set_iconview_visible)
def set_iconview_visible(self, timeout=True):
if timeout:
self.set_iv_visible_id = None
if not self.iconview.get_visible():
self.update_iconview_geometry()
self.scroll_to_selection()
GObject.idle_add(self.iconview.set_visible, True)
self.iconview.grab_focus()
def set_export_file(self, file):
if file != self.export_file:
self.export_file = file
self.set_unsaved(True)
def set_unsaved(self, flag):
self.is_unsaved = flag
GObject.idle_add(self.retitle)
def retitle(self):
if self.export_file:
title = self.export_file
if self.is_unsaved:
title += '*'
else:
title = _('untitled')
all_files = self.active_file_names()
if len(all_files) > 0:
title += ' [' + ', '.join(sorted(all_files)) + ']'
title += ' – ' + APPNAME
self.window.set_title(title)
return False
def update_thumbnail(self, _obj, ref, thumbnail, resample, scale, is_preview):
"""Update thumbnail emitted from rendering thread."""
if ref is None:
# Rendering ended
self.__update_statusbar(-1)
malloc_trim()
return
path = ref.get_path()
if path is None:
# Page no longer exist
return
if (self.visible_range[0] <= path.get_indices()[0] <= self.visible_range[1] and
resample != 1 / self.zoom_scale):
# Thumbnail is in the visible range but is not rendered for current zoom level
self.silent_render()
return
page = self.model[path][0]
if page.scale != scale:
# Page scale was changed while page was rendered -> trash & rerender
self.silent_render()
return
page.thumbnail = thumbnail
page.resample = resample
page.zoom = self.zoom_scale
if is_preview:
page.preview = thumbnail
# Let iconview refresh the thumbnail (only) by selecting it
with GObject.signal_handler_block(self.iconview, self.id_selection_changed_event):
if self.iconview.path_is_selected(path):
self.iconview.unselect_path(path)
self.iconview.select_path(path)
else:
self.iconview.select_path(path)
self.iconview.unselect_path(path)
self.__update_statusbar(path.get_indices()[0] + 1)
ac = self.iconview.get_accessible().ref_accessible_child(path.get_indices()[0])
ac.set_description(page.description())
def get_visible_range2(self):
"""Get range of items visible in window.
A item is considered visible if more than 50% of item is visible.
"""
sw_vadj = self.sw.get_vadjustment()
sw_vpos = sw_vadj.get_value()
columns_nr = max(self.iconview.get_columns(), 1)
sw_height = self.sw.get_allocated_height()
range_start = range_end = -1
item_nr = 0
while item_nr < len(self.model):
path = Gtk.TreePath.new_from_indices([item_nr])
cell_rect = self.iconview.get_cell_rect(path)[1]
item_center = cell_rect.y + cell_rect.height / 2
if range_start < 0 and item_center > sw_vpos - self.vp_css_margin:
range_start = item_nr
if item_center < sw_vpos + sw_height - self.vp_css_margin:
range_end = item_nr + columns_nr - 1
else:
break
item_nr += columns_nr
if range_start < 0 and len(self.model) > 0:
range_start = len(self.model) - 1
return range_start, min(max(range_end, range_start), len(self.model) - 1)
def on_window_size_request(self, _window):
"""Main Window resize."""
if self.iconview.get_visible():
self.update_iconview_geometry()
def update_iconview_geometry(self):
"""Set iconview cell size, margins, number of columns and spacing."""
if len(self.model) > 0:
item_width = max(row[0].width_in_pixel() for row in self.model)
item_padding = self.iconview.get_item_padding()
cellthmb_xpad, cellthmb_ypad = self.cellthmb.get_padding()
border_and_shadow = 7 # 2*th1+th2 set in iconview.py
# cell width min limit 50 is set in gtkiconview.c
cell_width = max(item_width + 2 * cellthmb_xpad + border_and_shadow, 50)
cell_height = -1
if self.zoom_full_page:
item_height = max(row[0].height_in_pixel() for row in self.model)
cell_height = item_height + 2 * cellthmb_ypad + border_and_shadow
self.cellthmb.set_fixed_size(cell_width, cell_height)
padded_cell_width = cell_width + 2 * item_padding
min_col_spacing = 5
min_margin = 11
iw_width = self.sw.get_allocation().width
# 2 * min_margin + col_num * padded_cell_width
# + min_col_spacing * (col_num+1) = iw_width
col_num = (iw_width - 2 * min_margin - min_col_spacing) //\
(padded_cell_width + min_col_spacing)
spacing = (iw_width - col_num * padded_cell_width - 2 * min_margin) // (col_num + 1)
margin = (iw_width - col_num * (padded_cell_width + spacing) + spacing) // 2
if col_num == 0:
col_num = 1
margin = 6
self.iconview.set_columns(col_num)
self.iconview.set_column_spacing(spacing)
self.iconview.set_margin(margin)
if self.vp_css_margin != 6 - margin:
# remove margin on top and bottom
self.vp_css_margin = 6 - margin
css_data = 'window viewport {\
margin-top:' + str(self.vp_css_margin) + 'px;\
margin-bottom:' + str(self.vp_css_margin) + 'px;}'
style_provider = Gtk.CssProvider()
style_provider.load_from_data(bytes(css_data.encode()))
Gtk.StyleContext.add_provider_for_screen(
Gdk.Screen.get_default(),
style_provider,
Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION)
def update_geometry(self, treeiter):
"""Recomputes the width and height of the rotated page and saves
the result in the ListStore"""
if not self.model.iter_is_valid(treeiter):
return
p = self.model.get(treeiter, 0)[0]
page = self.pdfqueue[p.nfile - 1].document.get_page(p.npage - 1)
p.set_size(page.get_size())
self.model.set(treeiter, 0, p)
def on_quit(self, _action, _param=None, _unknown=None):
if self.is_unsaved:
if self.export_file:
msg = _('Save changes to “{}” before closing?').format(os.path.basename(self.export_file))
else:
msg = _('Save changes before closing?')
d = Gtk.MessageDialog(self.window, 0, Gtk.MessageType.WARNING, Gtk.ButtonsType.NONE, msg)
d.format_secondary_markup(_("Your changes will be lost if you don’t save them."))
d.add_buttons(_('Do_n’t Save'), 1, _('_Cancel'), 2, _('_Save'), 3)
response = d.run()
d.destroy()
if response == 1:
# Quit
self.close_application()
elif response == 2 or response == Gtk.ResponseType.DELETE_EVENT:
# DELETE_EVENT is returned if Esc is pressed
# Returning True to stop self.window delete_event propagation.
return True
elif response == 3:
# Save.
self.save_or_choose()
# Quit only if it has been really saved.
if self.is_unsaved:
return True
self.close_application()
else:
# If unknown return code, do nothing
return True
else:
self.close_application()
def close_application(self, _widget=None, _event=None, _data=None):
"""Termination"""
if self.rendering_thread:
self.rendering_thread.quit = True
self.rendering_thread.join()
self.rendering_thread.pdfqueue = []
# Prevent gtk errors when closing with everything selected
self.iconview.unselect_all()
self.iconview.get_model().clear()
# Release Poppler.Document instances to unlock all temporay files
self.pdfqueue = []
gc.collect()
self.config.set_window_size(self.window.get_size())
self.config.set_maximized(self.window.is_maximized())
self.config.set_zoom_level(self.zoom_level)
self.config.set_position(self.window.get_position())
self.config.save()
if os.path.isdir(self.tmp_dir):
shutil.rmtree(self.tmp_dir)
self.quit()
def choose_export_pdf_name(self, mode):
"""Handles choosing a name for exporting """
chooser = Gtk.FileChooserDialog(title=_('Export…'),
parent=self.window,
action=Gtk.FileChooserAction.SAVE,
buttons=(Gtk.STOCK_CANCEL,
Gtk.ResponseType.CANCEL,
Gtk.STOCK_SAVE,
Gtk.ResponseType.ACCEPT))
chooser.set_do_overwrite_confirmation(True)
if len(self.pdfqueue) > 0:
f = self.pdfqueue[0].filename
# could be an image thanks to img2pdf
if f.endswith(".pdf"):
chooser.set_filename(f)
chooser.set_current_folder(self.export_directory)
filter_list = self.__create_filters(['pdf', 'all'])
for f in filter_list[1:]:
chooser.add_filter(f)
response = chooser.run()
file_out = chooser.get_filename()
chooser.destroy()
if response == Gtk.ResponseType.ACCEPT:
try:
self.save(mode, file_out)
except Exception as e:
traceback.print_exc()
self.error_message_dialog(e)
def active_file_names(self):
"""Returns the file names currently associated with pages in the model."""
r = set(row[1].split('\n')[0] for row in self.model)
r.discard("")
return r
def on_action_new(self, _action, _param, _unknown):
"""Start a new instance."""
if os.name == 'nt':
if sys.executable.find('python3.exe') == -1:
subprocess.Popen(sys.executable)
else:
subprocess.Popen([sys.executable, '-mpdfarranger'])
else:
display = Gdk.Display.get_default()
launch_context = display.get_app_launch_context()
desktop_file = "%s.desktop"%(self.get_application_id())
try:
app_info = Gio.DesktopAppInfo.new(desktop_file)
app_info.launch([], launch_context)
except TypeError:
subprocess.Popen([sys.executable, '-mpdfarranger'])
def on_action_save(self, _action, _param, _unknown):
self.save_or_choose()
def save_or_choose(self):
"""Saves to the previously exported file or shows the export dialog if
there was none."""
savemode = GLib.Variant('i', 0) # Save all pages in a single document.
try:
if self.export_file:
self.save(savemode, self.export_file)
else:
self.choose_export_pdf_name(savemode)
except Exception as e:
self.error_message_dialog(e)
def on_action_save_as(self, _action, _param, _unknown):
self.choose_export_pdf_name(GLib.Variant('i', 0))
@warn_dialog
def save(self, mode, file_out):
"""Saves to the specified file. May throw exceptions."""
(path, shortname) = os.path.split(file_out)
(shortname, ext) = os.path.splitext(shortname)
if ext.lower() != '.pdf':
file_out = file_out + '.pdf'
exportmodes = {0: 'ALL_TO_SINGLE',
1: 'ALL_TO_MULTIPLE',
2: 'SELECTED_TO_SINGLE',
3: 'SELECTED_TO_MULTIPLE'}
exportmode = exportmodes[mode.get_int32()]
if exportmode in ['SELECTED_TO_SINGLE', 'SELECTED_TO_MULTIPLE']:
selection = self.iconview.get_selected_items()
to_export = [row[0] for row in self.model if row.path in selection]
else: