Python Qt.QStackedWidget类代码示例

    def __init__(self, parent=None):
        QStackedWidget.__init__(self, parent)
        self.welcome = w = QLabel('<p>'+_(
            'Double click a file in the left panel to start editing'
            ' it.'))
        self.addWidget(w)
        w.setWordWrap(True)
        w.setAlignment(Qt.AlignTop | Qt.AlignHCenter)

        self.container = c = QWidget(self)
        self.addWidget(c)
        l = c.l = QVBoxLayout(c)
        c.setLayout(l)
        l.setContentsMargins(0, 0, 0, 0)
        self.editor_tabs = t = QTabWidget(c)
        l.addWidget(t)
        t.setDocumentMode(True)
        t.setTabsClosable(True)
        t.setMovable(True)
        pal = self.palette()
        if pal.color(pal.WindowText).lightness() > 128:
            i = QImage(I('modified.png'))
            i.invertPixels()
            self.modified_icon = QIcon(QPixmap.fromImage(i))
        else:
            self.modified_icon = QIcon(I('modified.png'))
        self.editor_tabs.currentChanged.connect(self.current_editor_changed)
        self.editor_tabs.tabCloseRequested.connect(self._close_requested)
        self.search_panel = SearchPanel(self)
        l.addWidget(self.search_panel)
        self.restore_state()
        self.editor_tabs.tabBar().installEventFilter(self)

 def __init__(self, msg, after=None, parent=None, size=256, interval=10):
     QStackedWidget.__init__(self, parent)
     self.wp = WaitPanel(msg, self, size, interval)
     if after is None:
         after = QWidget(self)
     self.after = after
     self.addWidget(self.wp)
     self.addWidget(after)

 def __init__(self, parent):
     QStackedWidget.__init__(self, parent)
     self.permanent_message = ''
     self.temporary_message = TemporaryMessage(1, '', 'info', monotonic())
     self.msg = Message(self, parent.sb_background)
     self.addWidget(self.msg)
     self.setFocusPolicy(Qt.NoFocus)
     self.msg.setFocusPolicy(Qt.NoFocus)
     self.search = SearchPanel(self)
     self.search.edit.abort_search.connect(self.hide_search)
     self.search.edit.editingFinished.connect(self.hide_search)
     self.addWidget(self.search)
     self.update_timer = t = QTimer(self)
     self.fg_color = color('status bar foreground', None)
     if self.fg_color:
         self.fg_color = QColor(self.fg_color)
     t.setSingleShot(True), t.setInterval(100), t.timeout.connect(self.update_message)

    def __init__(self, parent):
        QStackedWidget.__init__(self, parent)

        parent.cb_splitter = LibraryWidget(parent)
        self.tb_widget = TagBrowserWidget(parent)
        parent.tb_splitter = Splitter('tag_browser_splitter',
                _('Tag Browser'), I('tags.png'),
                parent=parent, side_index=0, initial_side_size=200,
                shortcut='Shift+Alt+T')
        parent.tb_splitter.state_changed.connect(
                        self.tb_widget.set_pane_is_visible, Qt.QueuedConnection)
        parent.tb_splitter.addWidget(self.tb_widget)
        parent.tb_splitter.addWidget(parent.cb_splitter)
        parent.tb_splitter.setCollapsible(parent.tb_splitter.other_index, False)

        self.addWidget(parent.tb_splitter)
        for x in ('memory', 'card_a', 'card_b'):
            name = x+'_view'
            w = DeviceBooksView(parent)
            setattr(parent, name, w)
            self.addWidget(w)
            w.setObjectName(name)

    def __init__(self, current_cover=None, parent=None):
        QDialog.__init__(self, parent)
        self.current_cover = current_cover
        self.log = Log()
        self.book = self.cover_pixmap = None

        self.setWindowTitle(_("Downloading metadata..."))
        self.setWindowIcon(QIcon(I("download-metadata.png")))

        self.stack = QStackedWidget()
        self.l = l = QVBoxLayout()
        self.setLayout(l)
        l.addWidget(self.stack)

        self.bb = QDialogButtonBox(QDialogButtonBox.Cancel | QDialogButtonBox.Ok)
        l.addWidget(self.bb)
        self.bb.rejected.connect(self.reject)
        self.bb.accepted.connect(self.accept)
        self.next_button = self.bb.addButton(_("Next"), self.bb.ActionRole)
        self.next_button.setDefault(True)
        self.next_button.setEnabled(False)
        self.next_button.setIcon(QIcon(I("ok.png")))
        self.next_button.clicked.connect(self.next_clicked)
        self.ok_button = self.bb.button(self.bb.Ok)
        self.ok_button.setEnabled(False)
        self.ok_button.clicked.connect(self.ok_clicked)
        self.prev_button = self.bb.addButton(_("Back"), self.bb.ActionRole)
        self.prev_button.setIcon(QIcon(I("back.png")))
        self.prev_button.clicked.connect(self.back_clicked)
        self.log_button = self.bb.addButton(_("View log"), self.bb.ActionRole)
        self.log_button.clicked.connect(self.view_log)
        self.log_button.setIcon(QIcon(I("debug.png")))
        self.prev_button.setVisible(False)

        self.identify_widget = IdentifyWidget(self.log, self)
        self.identify_widget.rejected.connect(self.reject)
        self.identify_widget.results_found.connect(self.identify_results_found)
        self.identify_widget.book_selected.connect(self.book_selected)
        self.stack.addWidget(self.identify_widget)

        self.covers_widget = CoversWidget(self.log, self.current_cover, parent=self)
        self.covers_widget.chosen.connect(self.ok_clicked)
        self.stack.addWidget(self.covers_widget)

        self.resize(850, 600)
        geom = gprefs.get("metadata_single_gui_geom", None)
        if geom is not None and geom:
            self.restoreGeometry(geom)

        self.finished.connect(self.cleanup)

 def resizeEvent(self, ev):
     self.resized.emit()
     return QStackedWidget.resizeEvent(self, ev)

    def __init__(self, gui, initial_panel=None):
        QDialog.__init__(self, gui)
        self.l = l = QGridLayout(self)
        self.setLayout(l)
        self.setWindowTitle(_('Preferences for Edit Book'))
        self.setWindowIcon(QIcon(I('config.png')))

        self.stacks = QStackedWidget(self)
        l.addWidget(self.stacks, 0, 1, 1, 1)

        self.categories_list = cl = QListWidget(self)
        cl.currentRowChanged.connect(self.stacks.setCurrentIndex)
        cl.clearPropertyFlags()
        cl.setViewMode(cl.IconMode)
        cl.setFlow(cl.TopToBottom)
        cl.setMovement(cl.Static)
        cl.setWrapping(False)
        cl.setSpacing(15)
        cl.setWordWrap(True)
        l.addWidget(cl, 0, 0, 1, 1)

        self.bb = bb = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel)
        bb.accepted.connect(self.accept)
        bb.rejected.connect(self.reject)
        self.rdb = b = bb.addButton(_('Restore all defaults'), bb.ResetRole)
        b.setToolTip(_('Restore defaults for all preferences'))
        b.clicked.connect(self.restore_all_defaults)
        self.rcdb = b = bb.addButton(_('Restore current defaults'), bb.ResetRole)
        b.setToolTip(_('Restore defaults for currently displayed preferences'))
        b.clicked.connect(self.restore_current_defaults)
        self.rconfs = b = bb.addButton(_('Restore confirmations'), bb.ResetRole)
        b.setToolTip(_('Restore all disabled confirmation prompts'))
        b.clicked.connect(self.restore_confirmations)

        l.addWidget(bb, 1, 0, 1, 2)

        self.resize(800, 600)
        geom = tprefs.get('preferences_geom', None)
        if geom is not None:
            self.restoreGeometry(geom)

        self.keyboard_panel = ShortcutConfig(self)
        self.keyboard_panel.initialize(gui.keyboard)
        self.editor_panel = EditorSettings(self)
        self.integration_panel = IntegrationSettings(self)
        self.main_window_panel = MainWindowSettings(self)
        self.preview_panel = PreviewSettings(self)
        self.toolbars_panel = ToolbarSettings(self)

        for name, icon, panel in [
            (_('Main window'), 'page.png', 'main_window'),
            (_('Editor settings'), 'modified.png', 'editor'),
            (_('Preview settings'), 'viewer.png', 'preview'),
            (_('Keyboard shortcuts'), 'keyboard-prefs.png', 'keyboard'),
            (_('Toolbars'), 'wizard.png', 'toolbars'),
            (_('Integration with calibre'), 'lt.png', 'integration'),
        ]:
            i = QListWidgetItem(QIcon(I(icon)), name, cl)
            cl.addItem(i)
            self.stacks.addWidget(getattr(self, panel + '_panel'))

        cl.setCurrentRow(0)
        cl.item(0).setSelected(True)
        w, h = cl.sizeHintForColumn(0), 0
        for i in xrange(cl.count()):
            h = max(h, cl.sizeHintForRow(i))
            cl.item(i).setSizeHint(QSize(w, h))

        cl.setMaximumWidth(cl.sizeHintForColumn(0) + 35)
        cl.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)

class Preferences(QDialog):

    def __init__(self, gui, initial_panel=None):
        QDialog.__init__(self, gui)
        self.l = l = QGridLayout(self)
        self.setLayout(l)
        self.setWindowTitle(_('Preferences for Edit Book'))
        self.setWindowIcon(QIcon(I('config.png')))

        self.stacks = QStackedWidget(self)
        l.addWidget(self.stacks, 0, 1, 1, 1)

        self.categories_list = cl = QListWidget(self)
        cl.currentRowChanged.connect(self.stacks.setCurrentIndex)
        cl.clearPropertyFlags()
        cl.setViewMode(cl.IconMode)
        cl.setFlow(cl.TopToBottom)
        cl.setMovement(cl.Static)
        cl.setWrapping(False)
        cl.setSpacing(15)
        cl.setWordWrap(True)
        l.addWidget(cl, 0, 0, 1, 1)

        self.bb = bb = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel)
        bb.accepted.connect(self.accept)
        bb.rejected.connect(self.reject)
        self.rdb = b = bb.addButton(_('Restore all defaults'), bb.ResetRole)
        b.setToolTip(_('Restore defaults for all preferences'))
        b.clicked.connect(self.restore_all_defaults)
        self.rcdb = b = bb.addButton(_('Restore current defaults'), bb.ResetRole)
        b.setToolTip(_('Restore defaults for currently displayed preferences'))
        b.clicked.connect(self.restore_current_defaults)
        self.rconfs = b = bb.addButton(_('Restore confirmations'), bb.ResetRole)
        b.setToolTip(_('Restore all disabled confirmation prompts'))
        b.clicked.connect(self.restore_confirmations)

        l.addWidget(bb, 1, 0, 1, 2)

        self.resize(800, 600)
        geom = tprefs.get('preferences_geom', None)
        if geom is not None:
            self.restoreGeometry(geom)

        self.keyboard_panel = ShortcutConfig(self)
        self.keyboard_panel.initialize(gui.keyboard)
        self.editor_panel = EditorSettings(self)
        self.integration_panel = IntegrationSettings(self)
        self.main_window_panel = MainWindowSettings(self)
        self.preview_panel = PreviewSettings(self)
        self.toolbars_panel = ToolbarSettings(self)

        for name, icon, panel in [
            (_('Main window'), 'page.png', 'main_window'),
            (_('Editor settings'), 'modified.png', 'editor'),
            (_('Preview settings'), 'viewer.png', 'preview'),
            (_('Keyboard shortcuts'), 'keyboard-prefs.png', 'keyboard'),
            (_('Toolbars'), 'wizard.png', 'toolbars'),
            (_('Integration with calibre'), 'lt.png', 'integration'),
        ]:
            i = QListWidgetItem(QIcon(I(icon)), name, cl)
            cl.addItem(i)
            self.stacks.addWidget(getattr(self, panel + '_panel'))

        cl.setCurrentRow(0)
        cl.item(0).setSelected(True)
        w, h = cl.sizeHintForColumn(0), 0
        for i in xrange(cl.count()):
            h = max(h, cl.sizeHintForRow(i))
            cl.item(i).setSizeHint(QSize(w, h))

        cl.setMaximumWidth(cl.sizeHintForColumn(0) + 35)
        cl.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)

    @property
    def dictionaries_changed(self):
        return self.editor_panel.dictionaries_changed

    @property
    def snippets_changed(self):
        return self.editor_panel.snippets_changed

    @property
    def toolbars_changed(self):
        return self.toolbars_panel.changed

    def restore_all_defaults(self):
        for i in xrange(self.stacks.count()):
            w = self.stacks.widget(i)
            w.restore_defaults()

    def restore_current_defaults(self):
        self.stacks.currentWidget().restore_defaults()

    def restore_confirmations(self):
        changed = 0
        for key in tuple(tprefs):
            if key.endswith('_again') and tprefs.get(key) is False:
                del tprefs[key]
                changed += 1
        msg = _('There are no disabled confirmation prompts')
#.........这里部分代码省略.........

class FullFetch(QDialog):  # {{{

    def __init__(self, current_cover=None, parent=None):
        QDialog.__init__(self, parent)
        self.current_cover = current_cover
        self.log = Log()
        self.book = self.cover_pixmap = None

        self.setWindowTitle(_('Downloading metadata...'))
        self.setWindowIcon(QIcon(I('download-metadata.png')))

        self.stack = QStackedWidget()
        self.l = l = QVBoxLayout()
        self.setLayout(l)
        l.addWidget(self.stack)

        self.bb = QDialogButtonBox(QDialogButtonBox.Cancel|QDialogButtonBox.Ok)
        self.h = h = QHBoxLayout()
        l.addLayout(h)
        self.bb.rejected.connect(self.reject)
        self.bb.accepted.connect(self.accept)
        self.ok_button = self.bb.button(self.bb.Ok)
        self.ok_button.setEnabled(False)
        self.ok_button.clicked.connect(self.ok_clicked)
        self.prev_button = pb = QPushButton(QIcon(I('back.png')), _('&Back'), self)
        pb.clicked.connect(self.back_clicked)
        pb.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
        self.log_button = self.bb.addButton(_('&View log'), self.bb.ActionRole)
        self.log_button.clicked.connect(self.view_log)
        self.log_button.setIcon(QIcon(I('debug.png')))
        self.prev_button.setVisible(False)
        h.addWidget(self.prev_button), h.addWidget(self.bb)

        self.identify_widget = IdentifyWidget(self.log, self)
        self.identify_widget.rejected.connect(self.reject)
        self.identify_widget.results_found.connect(self.identify_results_found)
        self.identify_widget.book_selected.connect(self.book_selected)
        self.stack.addWidget(self.identify_widget)

        self.covers_widget = CoversWidget(self.log, self.current_cover, parent=self)
        self.covers_widget.chosen.connect(self.ok_clicked)
        self.stack.addWidget(self.covers_widget)

        self.resize(850, 600)
        geom = gprefs.get('metadata_single_gui_geom', None)
        if geom is not None and geom:
            self.restoreGeometry(geom)

        self.finished.connect(self.cleanup)

    def view_log(self):
        self._lv = LogViewer(self.log, self)

    def book_selected(self, book, caches):
        self.prev_button.setVisible(True)
        self.book = book
        self.stack.setCurrentIndex(1)
        self.log('\n\n')
        self.covers_widget.start(book, self.current_cover,
                self.title, self.authors, caches)
        self.ok_button.setFocus()

    def back_clicked(self):
        self.prev_button.setVisible(False)
        self.stack.setCurrentIndex(0)
        self.covers_widget.cancel()
        self.covers_widget.reset_covers()

    def accept(self):
        # Prevent the usual dialog accept mechanisms from working
        gprefs['metadata_single_gui_geom'] = bytearray(self.saveGeometry())
        if DEBUG_DIALOG:
            if self.stack.currentIndex() == 2:
                return QDialog.accept(self)
        else:
            if self.stack.currentIndex() == 1:
                return QDialog.accept(self)

    def reject(self):
        gprefs['metadata_single_gui_geom'] = bytearray(self.saveGeometry())
        self.identify_widget.cancel()
        self.covers_widget.cancel()
        return QDialog.reject(self)

    def cleanup(self):
        self.covers_widget.cleanup()

    def identify_results_found(self):
        self.ok_button.setEnabled(True)

    def next_clicked(self, *args):
        gprefs['metadata_single_gui_geom'] = bytearray(self.saveGeometry())
        self.identify_widget.get_result()

    def ok_clicked(self, *args):
        self.cover_pixmap = self.covers_widget.cover_pixmap()
        if self.stack.currentIndex() == 0:
            self.next_clicked()
            return
        if DEBUG_DIALOG:
#.........这里部分代码省略.........

    def __init__(self, gui, initial_plugin=None, close_after_initial=False):
        QDialog.__init__(self, gui)
        self.gui = gui
        self.must_restart = False
        self.do_restart = False
        self.committed = False
        self.close_after_initial = close_after_initial

        self.resize(930, 720)
        nh, nw = min_available_height()-25, available_width()-10
        if nh < 0:
            nh = 800
        if nw < 0:
            nw = 600
        nh = min(self.height(), nh)
        nw = min(self.width(), nw)
        self.resize(nw, nh)

        geom = gprefs.get('preferences dialog geometry', None)
        if geom is not None:
            self.restoreGeometry(geom)

        # Center
        if islinux:
            self.move(gui.rect().center() - self.rect().center())

        self.setWindowModality(Qt.ApplicationModal)
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences'))
        self.setWindowIcon(QIcon(I('config.png')))
        self.l = l = QVBoxLayout(self)

        self.stack = QStackedWidget(self)
        self.bb = QDialogButtonBox(QDialogButtonBox.Close | QDialogButtonBox.Apply | QDialogButtonBox.Discard | QDialogButtonBox.RestoreDefaults)
        self.bb.button(self.bb.Apply).clicked.connect(self.accept)
        self.bb.button(self.bb.Discard).clicked.connect(self.reject)
        self.bb.button(self.bb.RestoreDefaults).setIcon(QIcon(I('clear_left.png')))
        self.bb.button(self.bb.RestoreDefaults).clicked.connect(self.restore_defaults)
        self.wizard_button = self.bb.addButton(_('Run Welcome &wizard'), self.bb.ActionRole)
        self.wizard_button.setIcon(QIcon(I('wizard.png')))
        self.wizard_button.clicked.connect(self.run_wizard, type=Qt.QueuedConnection)
        self.wizard_button.setAutoDefault(False)
        self.bb.rejected.connect(self.reject)
        self.browser = Browser(self)
        self.browser.show_plugin.connect(self.show_plugin)
        self.stack.addWidget(self.browser)
        self.scroll_area = QScrollArea(self)
        self.stack.addWidget(self.scroll_area)
        self.scroll_area.setWidgetResizable(True)

        self.setContextMenuPolicy(Qt.NoContextMenu)
        self.title_bar = TitleBar(self)
        for ac, tt in [(self.bb.Apply, _('Save changes')),
                (self.bb.Discard, _('Cancel and return to overview'))]:
            self.bb.button(ac).setToolTip(tt)

        l.addWidget(self.title_bar), l.addWidget(self.stack), l.addWidget(self.bb)

        if initial_plugin is not None:
            category, name = initial_plugin[:2]
            plugin = get_plugin(category, name)
            if plugin is not None:
                self.show_plugin(plugin)
                if len(initial_plugin) > 2:
                    w = self.findChild(QWidget, initial_plugin[2])
                    if w is not None:
                        for c in self.showing_widget.children():
                            if isinstance(c, QTabWidget):
                                idx = c.indexOf(w)
                                if idx > -1:
                                    c.setCurrentIndex(idx)
                                    break
        else:
            self.hide_plugin()

class Preferences(QDialog):

    run_wizard_requested = pyqtSignal()

    def __init__(self, gui, initial_plugin=None, close_after_initial=False):
        QDialog.__init__(self, gui)
        self.gui = gui
        self.must_restart = False
        self.do_restart = False
        self.committed = False
        self.close_after_initial = close_after_initial

        self.resize(930, 720)
        nh, nw = min_available_height()-25, available_width()-10
        if nh < 0:
            nh = 800
        if nw < 0:
            nw = 600
        nh = min(self.height(), nh)
        nw = min(self.width(), nw)
        self.resize(nw, nh)

        geom = gprefs.get('preferences dialog geometry', None)
        if geom is not None:
            self.restoreGeometry(geom)

        # Center
        if islinux:
            self.move(gui.rect().center() - self.rect().center())

        self.setWindowModality(Qt.ApplicationModal)
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences'))
        self.setWindowIcon(QIcon(I('config.png')))
        self.l = l = QVBoxLayout(self)

        self.stack = QStackedWidget(self)
        self.bb = QDialogButtonBox(QDialogButtonBox.Close | QDialogButtonBox.Apply | QDialogButtonBox.Discard | QDialogButtonBox.RestoreDefaults)
        self.bb.button(self.bb.Apply).clicked.connect(self.accept)
        self.bb.button(self.bb.Discard).clicked.connect(self.reject)
        self.bb.button(self.bb.RestoreDefaults).setIcon(QIcon(I('clear_left.png')))
        self.bb.button(self.bb.RestoreDefaults).clicked.connect(self.restore_defaults)
        self.wizard_button = self.bb.addButton(_('Run Welcome &wizard'), self.bb.ActionRole)
        self.wizard_button.setIcon(QIcon(I('wizard.png')))
        self.wizard_button.clicked.connect(self.run_wizard, type=Qt.QueuedConnection)
        self.wizard_button.setAutoDefault(False)
        self.bb.rejected.connect(self.reject)
        self.browser = Browser(self)
        self.browser.show_plugin.connect(self.show_plugin)
        self.stack.addWidget(self.browser)
        self.scroll_area = QScrollArea(self)
        self.stack.addWidget(self.scroll_area)
        self.scroll_area.setWidgetResizable(True)

        self.setContextMenuPolicy(Qt.NoContextMenu)
        self.title_bar = TitleBar(self)
        for ac, tt in [(self.bb.Apply, _('Save changes')),
                (self.bb.Discard, _('Cancel and return to overview'))]:
            self.bb.button(ac).setToolTip(tt)

        l.addWidget(self.title_bar), l.addWidget(self.stack), l.addWidget(self.bb)

        if initial_plugin is not None:
            category, name = initial_plugin[:2]
            plugin = get_plugin(category, name)
            if plugin is not None:
                self.show_plugin(plugin)
                if len(initial_plugin) > 2:
                    w = self.findChild(QWidget, initial_plugin[2])
                    if w is not None:
                        for c in self.showing_widget.children():
                            if isinstance(c, QTabWidget):
                                idx = c.indexOf(w)
                                if idx > -1:
                                    c.setCurrentIndex(idx)
                                    break
        else:
            self.hide_plugin()

    def event(self, ev):
        if isinstance(ev, QStatusTipEvent):
            msg = re.sub(r'</?[a-z1-6]+>', ' ', ev.tip())
            self.title_bar.show_msg(msg)
        return QDialog.event(self, ev)

    def run_wizard(self):
        self.run_wizard_requested.emit()
        self.accept()

    def set_tooltips_for_labels(self):

        def process_child(child):
            for g in child.children():
                if isinstance(g, QLabel):
                    buddy = g.buddy()
                    if buddy is not None and hasattr(buddy, 'toolTip'):
                        htext = unicode_type(buddy.toolTip()).strip()
                        etext = unicode_type(g.toolTip()).strip()
                        if htext and not etext:
                            g.setToolTip(htext)
                            g.setWhatsThis(htext)
#.........这里部分代码省略.........

    def __init__(self, gui, initial_plugin=None, close_after_initial=False):
        QMainWindow.__init__(self, gui)
        self.gui = gui
        self.must_restart = False
        self.committed = False
        self.close_after_initial = close_after_initial

        self.resize(930, 720)
        nh, nw = min_available_height()-25, available_width()-10
        if nh < 0:
            nh = 800
        if nw < 0:
            nw = 600
        nh = min(self.height(), nh)
        nw = min(self.width(), nw)
        self.resize(nw, nh)
        self.esc_action = QAction(self)
        self.addAction(self.esc_action)
        self.esc_action.setShortcut(QKeySequence(Qt.Key_Escape))
        self.esc_action.triggered.connect(self.esc)

        geom = gprefs.get('preferences_window_geometry', None)
        if geom is not None:
            self.restoreGeometry(geom)

        # Center
        if islinux:
            self.move(gui.rect().center() - self.rect().center())

        self.setWindowModality(Qt.WindowModal)
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences'))
        self.setWindowIcon(QIcon(I('config.png')))

        self.status_bar = StatusBar(self)
        self.setStatusBar(self.status_bar)

        self.stack = QStackedWidget(self)
        self.cw = QWidget(self)
        self.cw.setLayout(QVBoxLayout())
        self.cw.layout().addWidget(self.stack)
        self.bb = QDialogButtonBox(QDialogButtonBox.Close)
        self.wizard_button = self.bb.addButton(_('Run welcome wizard'),
                self.bb.ActionRole)
        self.wizard_button.setIcon(QIcon(I('wizard.png')))
        self.wizard_button.clicked.connect(self.run_wizard,
                type=Qt.QueuedConnection)
        self.cw.layout().addWidget(self.bb)
        self.bb.button(self.bb.Close).setDefault(True)
        self.bb.rejected.connect(self.close, type=Qt.QueuedConnection)
        self.setCentralWidget(self.cw)
        self.browser = Browser(self)
        self.browser.show_plugin.connect(self.show_plugin)
        self.stack.addWidget(self.browser)
        self.scroll_area = QScrollArea(self)
        self.stack.addWidget(self.scroll_area)
        self.scroll_area.setWidgetResizable(True)

        self.setContextMenuPolicy(Qt.NoContextMenu)
        self.bar = QToolBar(self)
        self.addToolBar(self.bar)
        self.bar.setVisible(False)
        self.bar.setIconSize(QSize(ICON_SIZE, ICON_SIZE))
        self.bar.setMovable(False)
        self.bar.setFloatable(False)
        self.bar.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
        self.apply_action = self.bar.addAction(QIcon(I('ok.png')), _('&Apply'),
                self.commit)
        self.cancel_action = self.bar.addAction(QIcon(I('window-close.png')),
                _('&Cancel'),                self.cancel)
        self.bar_title = BarTitle(self.bar)
        self.bar.addWidget(self.bar_title)
        self.restore_action = self.bar.addAction(QIcon(I('clear_left.png')),
                _('Restore &defaults'), self.restore_defaults)
        for ac, tt in [('apply', _('Save changes')),
                ('cancel', _('Cancel and return to overview'))]:
            ac = getattr(self, ac+'_action')
            ac.setToolTip(tt)
            ac.setWhatsThis(tt)
            ac.setStatusTip(tt)

        for ch in self.bar.children():
            if isinstance(ch, QToolButton):
                ch.setCursor(Qt.PointingHandCursor)
                ch.setAutoRaise(True)

        self.stack.setCurrentIndex(0)

        if initial_plugin is not None:
            category, name = initial_plugin
            plugin = get_plugin(category, name)
            if plugin is not None:
                self.show_plugin(plugin)

class Preferences(QMainWindow):

    run_wizard_requested = pyqtSignal()

    def __init__(self, gui, initial_plugin=None, close_after_initial=False):
        QMainWindow.__init__(self, gui)
        self.gui = gui
        self.must_restart = False
        self.committed = False
        self.close_after_initial = close_after_initial

        self.resize(930, 720)
        nh, nw = min_available_height()-25, available_width()-10
        if nh < 0:
            nh = 800
        if nw < 0:
            nw = 600
        nh = min(self.height(), nh)
        nw = min(self.width(), nw)
        self.resize(nw, nh)
        self.esc_action = QAction(self)
        self.addAction(self.esc_action)
        self.esc_action.setShortcut(QKeySequence(Qt.Key_Escape))
        self.esc_action.triggered.connect(self.esc)

        geom = gprefs.get('preferences_window_geometry', None)
        if geom is not None:
            self.restoreGeometry(geom)

        # Center
        if islinux:
            self.move(gui.rect().center() - self.rect().center())

        self.setWindowModality(Qt.WindowModal)
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences'))
        self.setWindowIcon(QIcon(I('config.png')))

        self.status_bar = StatusBar(self)
        self.setStatusBar(self.status_bar)

        self.stack = QStackedWidget(self)
        self.cw = QWidget(self)
        self.cw.setLayout(QVBoxLayout())
        self.cw.layout().addWidget(self.stack)
        self.bb = QDialogButtonBox(QDialogButtonBox.Close)
        self.wizard_button = self.bb.addButton(_('Run welcome wizard'),
                self.bb.ActionRole)
        self.wizard_button.setIcon(QIcon(I('wizard.png')))
        self.wizard_button.clicked.connect(self.run_wizard,
                type=Qt.QueuedConnection)
        self.cw.layout().addWidget(self.bb)
        self.bb.button(self.bb.Close).setDefault(True)
        self.bb.rejected.connect(self.close, type=Qt.QueuedConnection)
        self.setCentralWidget(self.cw)
        self.browser = Browser(self)
        self.browser.show_plugin.connect(self.show_plugin)
        self.stack.addWidget(self.browser)
        self.scroll_area = QScrollArea(self)
        self.stack.addWidget(self.scroll_area)
        self.scroll_area.setWidgetResizable(True)

        self.setContextMenuPolicy(Qt.NoContextMenu)
        self.bar = QToolBar(self)
        self.addToolBar(self.bar)
        self.bar.setVisible(False)
        self.bar.setIconSize(QSize(ICON_SIZE, ICON_SIZE))
        self.bar.setMovable(False)
        self.bar.setFloatable(False)
        self.bar.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
        self.apply_action = self.bar.addAction(QIcon(I('ok.png')), _('&Apply'),
                self.commit)
        self.cancel_action = self.bar.addAction(QIcon(I('window-close.png')),
                _('&Cancel'),                self.cancel)
        self.bar_title = BarTitle(self.bar)
        self.bar.addWidget(self.bar_title)
        self.restore_action = self.bar.addAction(QIcon(I('clear_left.png')),
                _('Restore &defaults'), self.restore_defaults)
        for ac, tt in [('apply', _('Save changes')),
                ('cancel', _('Cancel and return to overview'))]:
            ac = getattr(self, ac+'_action')
            ac.setToolTip(tt)
            ac.setWhatsThis(tt)
            ac.setStatusTip(tt)

        for ch in self.bar.children():
            if isinstance(ch, QToolButton):
                ch.setCursor(Qt.PointingHandCursor)
                ch.setAutoRaise(True)

        self.stack.setCurrentIndex(0)

        if initial_plugin is not None:
            category, name = initial_plugin
            plugin = get_plugin(category, name)
            if plugin is not None:
                self.show_plugin(plugin)

    def run_wizard(self):
        self.close()
        self.run_wizard_requested.emit()
#.........这里部分代码省略.........