# -*- coding: iso-8859-1 -*- # Copyright (C) 2010-2014 Bastian Kleineidam # # 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 2 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. from PyQt4 import QtCore, QtGui class LineEdit (QtGui.QLineEdit): """A line edit widget displaying a clear button if there is some text and a down-arrow button displaying a list of strings (eg. recent documents).""" def __init__ (self, parent=None): """Initialize buttons and size settings.""" super(LineEdit, self).__init__(parent) self.listmodel = None self.listview = None self.setup_clear_button() self.setup_list_button() self.setup_size_metrics() def setup_clear_button (self): """Initialize the clear button.""" self.clearButton = QtGui.QToolButton(self) pixmap = QtGui.QPixmap(":/icons/clear.png") self.clearButton.setIcon(QtGui.QIcon(pixmap)) self.clearButton.setIconSize(pixmap.size()) self.clearButton.setCursor(QtCore.Qt.ArrowCursor) style = "QToolButton { border: none; padding: 0px; }" self.clearButton.setStyleSheet(style) self.clearButton.hide() self.clearButton.clicked.connect(self.clear) self.textChanged.connect(self.updateCloseButton) def setup_list_button (self): """Initialize the dropdown list button.""" self.listButton = QtGui.QToolButton(self) pixmap = QtGui.QPixmap(":/icons/arrow_down.png") self.listButton.setIcon(QtGui.QIcon(pixmap)) self.listButton.setIconSize(pixmap.size()) self.listButton.setCursor(QtCore.Qt.ArrowCursor) style = "QToolButton { border: none; padding: 0px; }" self.listButton.setStyleSheet(style) self.listButton.hide() self.listButton.clicked.connect(self.toggle_list) def setModel (self, model): """Set list model for list of recent documents.""" self.listmodel = model self.listview = QtGui.QListView() self.listview.setModel(model) self.listview.setWindowFlags(QtCore.Qt.Popup) self.listview.setFocusPolicy(QtCore.Qt.NoFocus) self.listview.setFocusProxy(self) self.listview.setMouseTracking(True) self.listview.setUniformItemSizes(True) self.listview.setEditTriggers(QtGui.QAbstractItemView.NoEditTriggers) self.listview.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows) self.listview.setFrameStyle(QtGui.QFrame.Box | QtGui.QFrame.Plain) self.listview.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff) self.listview.installEventFilter(self) self.listview.clicked.connect(self.selectRecentDocument) self.listview.hide() updatefunc = lambda parent, start, end: self.updateListButton self.listmodel.rowsInserted.connect(updatefunc) self.listmodel.rowsRemoved.connect(updatefunc) self.updateListButton() def eventFilter(self, obj, event): """Handle events from the listview popup.""" if obj != self.listview: return False if event.type() == QtCore.QEvent.MouseButtonPress: self.listview.hide() self.setFocus() return True if event.type() == QtCore.QEvent.KeyPress: consumed = False key = event.key() if key in (QtCore.Qt.Key_Enter, QtCore.Qt.Key_Return): self.doneCompletion() consumed = True elif key == QtCore.Qt.Key_Escape: self.setFocus() self.listview.hide() consumed = True elif key in (QtCore.Qt.Key_Up, QtCore.Qt.Key_Down, QtCore.Qt.Key_Home, QtCore.Qt.Key_End, QtCore.Qt.Key_PageUp, QtCore.Qt.Key_PageDown): pass else: self.setFocus() self.event(event) self.listview.hide() return consumed return False def selectRecentDocument (self, index): """Select recent document text after click on the list view.""" self.listview.hide() item = self.listmodel.data(index) text = unicode(item.toString()) self.setText(text) def setup_size_metrics (self): """Set widget size including the buttons.""" frameWidth = self.style().pixelMetric(QtGui.QStyle.PM_DefaultFrameWidth) padding_right = self.clearButton.sizeHint().width() + frameWidth + 1 padding_left = self.listButton.sizeHint().width() + frameWidth + 1 style = "QLineEdit { padding-left: %dpx; padding-right: %dpx } " % ( padding_left, padding_right) self.setStyleSheet(style) # minimum width minSize = self.minimumSizeHint() buttonWidth = padding_left + padding_right minWidth = max(minSize.width(), buttonWidth) # minimum height buttonHeight = max(self.clearButton.sizeHint().height(), self.listButton.sizeHint().height()) minHeight = max(minSize.height(), buttonHeight + frameWidth*2) # set minimum size self.setMinimumSize(minWidth, minHeight) def resizeEvent (self, event): """Move the buttons due to resize event.""" frameWidth = self.style().pixelMetric(QtGui.QStyle.PM_DefaultFrameWidth) bottom = self.rect().y() + self.rect().height() # clear button sizeHint = self.clearButton.sizeHint() x = self.rect().right() - frameWidth - sizeHint.width() y = (bottom - sizeHint.height()) / 2 self.clearButton.move(x,y) # list button sizeHint = self.listButton.sizeHint() # add one to x and y since the button icon is a little off x = self.rect().left() + frameWidth + 1 y = (bottom - sizeHint.height()) / 2 + 1 self.listButton.move(x,y) def updateListButton (self): """Show or hide button for list of documents.""" self.listButton.setVisible(bool(self.listmodel.rowCount())) def updateCloseButton (self, text): """Only display the clear button if there is some text.""" self.clearButton.setVisible(bool(text)) def toggle_list (self): """Show or hide list of documents.""" if self.listview.isHidden(): self.listview.adjustSize() point = self.mapToGlobal(QtCore.QPoint(0, self.height())) self.listview.move(point) self.listview.setFocus() self.listview.show() else: self.listview.hide() def addMenuEntries (self, menu): """Add browser bookmark actions to menu.""" name = _("Insert %(browser)s bookmark file") if find_firefox(): action = menu.addAction(name % {"browser": u"Firefox"}) action.triggered.connect(lambda: self.setText(find_firefox())) if find_chrome(): action = menu.addAction(name % {"browser": u"Google Chrome"}) action.triggered.connect(lambda: self.setText(find_chrome())) if find_chromium(): action = menu.addAction(name % {"browser": u"Chromium"}) action.triggered.connect(lambda: self.setText(find_chromium())) if find_opera(): action = menu.addAction(name % {"browser": u"Opera"}) action.triggered.connect(lambda: self.setText(find_opera())) if find_safari(): action = menu.addAction(name % {"browser": u"Safari"}) action.triggered.connect(lambda: self.setText(find_safari())) def contextMenuEvent (self, event): """Handle context menu event.""" menu = self.createStandardContextMenu() self.addMenuEntries(menu) menu.exec_(event.globalPos()) def find_firefox (): """Return Firefox bookmark filename or empty string if not found.""" from ..bookmarks.firefox import find_bookmark_file return find_bookmark_file() def find_chrome (): """Return Google Chrome bookmark filename or empty string if not found.""" from ..bookmarks.chrome import find_bookmark_file return find_bookmark_file() def find_chromium (): """Return Chromium bookmark filename or empty string if not found.""" from ..bookmarks.chromium import find_bookmark_file return find_bookmark_file() def find_opera (): """Return Opera bookmark filename or empty string if not found.""" from ..bookmarks.opera import find_bookmark_file return find_bookmark_file() def find_safari (): """Return Safari bookmark filename or empty string if not found.""" from ..bookmarks.safari import find_bookmark_file return find_bookmark_file()