# -*- coding: utf-8 -*- # ----------------------------------------------------------------------------- # Copyright (c) 2016-2017 Anaconda, Inc. # # May be copied and distributed freely only as part of an Anaconda or # Miniconda installation. # ----------------------------------------------------------------------------- """Custom tab widget with custom tabbar.""" # yapf: disable # Standard library imports import sys # Third party imports from qtpy.QtCore import Qt, Signal from qtpy.QtGui import QIcon from qtpy.QtWidgets import (QHBoxLayout, QLabel, QSizePolicy, QVBoxLayout, QWidget) # Local imports from anaconda_navigator.utils.styles import load_style_sheet from anaconda_navigator.widgets import (ButtonLink, ButtonToolBase, FrameBase, FrameTabBar, FrameTabBody, LabelBase, StackBody) # yapf: enable class LabelTabHeader(LabelBase): """Label used in CSS styling.""" class FrameTabBarBottom(FrameBase): """Frame used in CSS styling.""" class FrameTabBarLink(FrameBase): """Frame used in CSS styling.""" class FrameTabBarSocial(FrameBase): """Frame used in CSS styling.""" class ButtonTab(ButtonToolBase): """Button used in custom tab bar for CSS styling.""" def __init__(self, *args, **kwargs): """Button used in custom tab bar for CSS styling.""" super(ButtonTab, self).__init__(*args, **kwargs) self.setCheckable(True) self.setToolButtonStyle(Qt.ToolButtonTextBesideIcon) self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding) def keyPressEvent(self, event): """Override Qt method.""" key = event.key() if key in [Qt.Key_Enter, Qt.Key_Return]: self.animateClick() super(ButtonTab, self).keyPressEvent(event) class TabBar(QWidget): """Custom QTabBar that includes centered icons and text bellow the icon.""" sig_index_changed = Signal(int) sig_url_clicked = Signal(object) def __init__(self, *args, **kwargs): """Custom QTabBar.""" super(TabBar, self).__init__(*args, **kwargs) self.buttons = [] self.links = [] self.links_social = [] self.frame_bottom = FrameTabBarBottom() self.frame_social = FrameTabBarSocial() self.frame_link = FrameTabBarLink() self.current_index = None # Layouts self.layout_top = QVBoxLayout() self.layout_link = QVBoxLayout() self.layout_social = QHBoxLayout() self._label_links_header = LabelTabHeader('') layout = QVBoxLayout() layout.addLayout(self.layout_top) layout.addStretch() self.frame_link.setLayout(self.layout_link) self.frame_social.setLayout(self.layout_social) layout_bottom = QVBoxLayout() layout_bottom.addWidget(self.frame_link) layout_bottom.addWidget(self.frame_social) self.frame_bottom.setLayout(layout_bottom) layout.addWidget(self.frame_bottom) # self.layout_bottom.addWidget(self._label_links_header, 0, # Qt.AlignLeft) self.setLayout(layout) def set_links_header(self, text): """Add links header to the bottom of the custom tab bar.""" self._label_links_header.setText(text) def add_social(self, text, url=None): """Add social link on bottom of side bar.""" button = ButtonLink() button.setText(' ') button.setObjectName(text.lower()) button.setFocusPolicy(Qt.StrongFocus) button.clicked.connect( lambda v=None, url=url: self.sig_url_clicked.emit(url) ) self.layout_social.addWidget(button, 0, Qt.AlignCenter) self.links_social.append(button) def add_link(self, text, url=None): """Add link on bottom of side bar.""" button = ButtonLink() button.setText(text) button.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding) button.setFocusPolicy(Qt.StrongFocus) button.clicked.connect( lambda v=None, url=url: self.sig_url_clicked.emit(url) ) self.layout_link.addWidget(button) self.links.append(button) def add_tab(self, text, icon=None): """Create the widget that replaces the normal tab content.""" button = ButtonTab() button.setObjectName(text.lower()) if text == 'Projects': text = 'Projects (beta)' button.setText(text) button.setFocusPolicy(Qt.StrongFocus) if icon: button.setIcon(icon) self.layout_top.addWidget(button) self.buttons.append(button) index = self.buttons.index(button) button.clicked.connect( lambda b=button, i=index: self.refresh(button, index) ) def refresh(self, button=None, index=None): """Refresh pressed status of buttons.""" widths = [] for b in self.buttons: b.setChecked(False) b.setProperty('checked', False) widths.append(b.width()) max_width = max(widths) for b in self.buttons: b.setMinimumWidth(max_width) if button: button.setChecked(True) button.setProperty('checked', True) if index is not None: self.sig_index_changed.emit(index) self.current_index = index class TabWidget(QWidget): """Curstom Tab Widget that includes a more customizable `tabbar`.""" sig_current_changed = Signal(int) sig_url_clicked = Signal(object) def __init__(self, *args, **kwargs): """Custom Tab Widget that includes a more customizable `tabbar`.""" super(TabWidget, self).__init__(*args, **kwargs) self.frame_sidebar = FrameTabBar() self.frame_tab_content = FrameTabBody() self.stack = StackBody() self.tabbar = TabBar() layout_sidebar = QVBoxLayout() layout_sidebar.addWidget(self.tabbar) self.frame_sidebar.setLayout(layout_sidebar) layout_content = QHBoxLayout() layout_content.addWidget(self.stack) self.frame_tab_content.setLayout(layout_content) layout = QHBoxLayout() layout.addWidget(self.frame_sidebar) layout.addWidget(self.frame_tab_content) self.setLayout(layout) self.tabbar.sig_index_changed.connect(self.setCurrentIndex) self.tabbar.sig_url_clicked.connect(self.sig_url_clicked) def count(self): """Override Qt method.""" return self.stack.count() def widget(self, index): """Override Qt method.""" return self.stack.widget(index) def currentWidget(self): """Override Qt method.""" return self.stack.currentWidget() def currentIndex(self): """Override Qt method.""" return self.tabbar.current_index def setCurrentIndex(self, index): """Override Qt method.""" if self.currentIndex() != index: self.tabbar.current_index = index self.tabbar.buttons[index].setChecked(True) self.tabbar.buttons[index].setFocus() self.stack.setCurrentIndex(index) self.sig_current_changed.emit(index) def currentText(self): """Override Qt method.""" index = self.currentIndex() text = '' if index: button = self.tabbar.buttons[self.currentIndex()] if button: text = button.text() return text def addTab(self, widget, icon=None, text=''): """Override Qt method.""" if widget: self.tabbar.add_tab(text, icon) self.stack.addWidget(widget) self.setCurrentIndex(0) else: raise Exception('tab widget cant be None') def add_link(self, text, url=None): """Add links to the bottom area of the custom tab bar.""" self.tabbar.add_link(text, url) def add_social(self, text, url=None): """Add social link on bottom of side bar.""" self.tabbar.add_social(text, url) def set_links_header(self, text): """Add links header to the bottom of the custom tab bar.""" self.tabbar.set_links_header(text) def refresh(self): """Refresh size of buttons.""" self.tabbar.refresh() # --- Local testing # ----------------------------------------------------------------------------- def local_test(): # pragma: no cover """Run local tests.""" from anaconda_navigator.utils.qthelpers import qapplication app = qapplication(test_time=3) widget = TabWidget() widget.addTab(QLabel('HELLO 1'), text='Home', icon=QIcon()) widget.addTab(QLabel('HELLO 2'), text='Add', icon=QIcon()) widget.add_link('link 1') widget.setStyleSheet(load_style_sheet()) widget.showMaximized() widget.refresh() sys.exit(app.exec_()) if __name__ == '__main__': # pragma: no cover local_test()