onionshare/onionshare_gui/tab_widget.py

126 lines
3.9 KiB
Python

# -*- coding: utf-8 -*-
"""
OnionShare | https://onionshare.org/
Copyright (C) 2014-2018 Micah Lee <micah@micahflee.com>
This program 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, see <http://www.gnu.org/licenses/>.
"""
from PyQt5 import QtCore, QtWidgets, QtGui
from onionshare import strings
from .tab import Tab
class TabWidget(QtWidgets.QTabWidget):
"""
A custom tab widget, that has a "+" button for adding new tabs
"""
def __init__(self, common, system_tray, status_bar):
super(TabWidget, self).__init__()
self.common = common
self.common.log("TabWidget", "__init__")
self.system_tray = system_tray
self.status_bar = status_bar
# Keep track of tabs in a dictionary
self.tabs = {}
self.tab_id = 0 # each tab has a unique id
# Define the new tab button
self.new_tab_button = QtWidgets.QPushButton("+", parent=self)
self.new_tab_button.setFlat(True)
self.new_tab_button.setAutoFillBackground(True)
self.new_tab_button.setFixedSize(30, 30)
self.new_tab_button.clicked.connect(self.new_tab_clicked)
self.new_tab_button.setStyleSheet(self.common.gui.css["tab_bar_new_tab_button"])
self.new_tab_button.setToolTip(strings._("gui_new_tab_tooltip"))
# Use a custom tab bar
tab_bar = TabBar()
tab_bar.move_new_tab_button.connect(self.move_new_tab_button)
self.setTabBar(tab_bar)
# Set up the tab widget
self.setMovable(True)
self.setTabsClosable(True)
self.setUsesScrollButtons(True)
self.tabCloseRequested.connect(self.close_tab)
self.move_new_tab_button()
def move_new_tab_button(self):
# Find the width of all tabs
tabs_width = sum(
[self.tabBar().tabRect(i).width() for i in range(self.count())]
)
# The current positoin of the new tab button
pos = self.new_tab_button.pos()
# If there are so many tabs it scrolls, move the button to the left of the scroll buttons
if tabs_width > self.width():
pos.setX(self.width() - 61)
else:
# Otherwise move the button to the right of the tabs
pos.setX(self.tabBar().sizeHint().width())
self.new_tab_button.move(pos)
self.new_tab_button.raise_()
def new_tab_clicked(self):
# Create the tab
tab = Tab(self.common, self.tab_id, self.system_tray, self.status_bar)
tab.change_title.connect(self.change_title)
self.tabs[self.tab_id] = tab
self.tab_id += 1
# Add it
index = self.addTab(tab, "New Tab")
self.setCurrentIndex(index)
def change_title(self, tab_id, title):
index = self.indexOf(self.tabs[tab_id])
self.setTabText(index, title)
def close_tab(self, index):
self.common.log("TabWidget", "close_tab", f"{index}")
tab = self.widget(index)
if tab.close_tab():
self.removeTab(index)
del self.tabs[tab.tab_id]
def resizeEvent(self, event):
# Make sure to move new tab button on each resize
super(TabWidget, self).resizeEvent(event)
self.move_new_tab_button()
class TabBar(QtWidgets.QTabBar):
"""
A custom tab bar
"""
move_new_tab_button = QtCore.pyqtSignal()
def __init__(self):
super(TabBar, self).__init__()
def tabLayoutChange(self):
self.move_new_tab_button.emit()