This module offers an onscreen character keyboard widget, which makes use of the char modules as its data source.
| Type: | charsKeyboard |
| Uses (at least one of): | |
| Requires (at least one of): |
GuiModule >
EventModule > CyrillicModule > SymbolsModule > GreekModule > TranslatorModule > |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 | #! /usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright 2009-2012, 2014, Marten de Vries
# Copyright 2008-2011, Milan Boers
#
# This file is part of OpenTeacher.
#
# OpenTeacher 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.
#
# OpenTeacher 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 OpenTeacher. If not, see <http://www.gnu.org/licenses/>.
import weakref
def installQtClasses():
global CharsKeyboardWidget, KeyboardsWidget
class CharsKeyboardWidget(QtWidgets.QWidget):
"""A keyboard widget that displays all characters passed to it
in the constructor, and emits the letterChosen signal when
one is clicked.
"""
letterChosen = QtCore.pyqtSignal([object])
def __init__(self, characters, *args, **kwargs):
super().__init__(*args, **kwargs)
topWidget = QtWidgets.QWidget()
layout = QtWidgets.QGridLayout()
layout.setSpacing(1)
layout.setContentsMargins(0, 0, 0, 0)
i = 0
for line in characters:
j = 0
for item in line:
b = QtWidgets.QPushButton(item)
b.clicked.connect(self._letterChosen)
b.setMinimumSize(1, 1)
b.setFlat(True)
b.setAutoFillBackground(True)
palette = b.palette()
if i % 2 == 0:
brush = palette.brush(QtGui.QPalette.Base)
else:
brush = palette.brush(QtGui.QPalette.AlternateBase)
palette.setBrush(QtGui.QPalette.Button, brush)
b.setPalette(palette)
if not item:
b.setEnabled(False)
layout.addWidget(b, i, j)
j += 1
i+= 1
topWidget.setLayout(layout)
palette = topWidget.palette()
brush = palette.brush(QtGui.QPalette.WindowText)
palette.setBrush(QtGui.QPalette.Window, QtCore.Qt.darkGray)
topWidget.setPalette(palette)
topWidget.setAutoFillBackground(True)
mainLayout = QtWidgets.QVBoxLayout()
mainLayout.addWidget(topWidget)
mainLayout.addStretch()
mainLayout.setContentsMargins(0, 0, 0, 0)
self.setLayout(mainLayout)
topWidget.setSizePolicy(
QtWidgets.QSizePolicy.Expanding,
QtWidgets.QSizePolicy.Maximum
)
def _letterChosen(self):
text = self.sender().text()
self.letterChosen.emit(text)
class KeyboardsWidget(QtWidgets.QTabWidget):
"""A container of keyboard widgets, it has one keyboard widget
for every different table of characters.
"""
def __init__(self, createEvent, data, *args, **kwargs):
super().__init__(*args, **kwargs)
self.letterChosen = createEvent()
self._data = data
self.update()
def update(self):
#clean the widget, needed if this method has been called before.
self.clear()
for module in self._data:
#create tab and add it to the widget
tab = CharsKeyboardWidget(module.data)
self.addTab(tab, module.name)
#connect the event that handles letter selection
tab.letterChosen.connect(self.letterChosen.send)
class CharsKeyboardModule:
"""This module offers an onscreen character keyboard widget, which
makes use of the char modules as its data source.
"""
def __init__(self, moduleManager, *args, **kwargs):
super().__init__(*args, **kwargs)
self._mm = moduleManager
self.type = "charsKeyboard"
self.requires = (
self._mm.mods(type="ui"),
self._mm.mods(type="event"),
self._mm.mods(type="chars"),
self._mm.mods(type="translator"),
)
def enable(self):
global QtCore, QtGui, QtWidgets
try:
from PyQt5 import QtCore, QtGui, QtWidgets
except ImportError:
return
installQtClasses()
self._modules = set(self._mm.mods(type="modules")).pop()
self._widgets = set()
try:
translator = self._modules.default("active", type="translator")
except IndexError:
pass
else:
translator.languageChangeDone.handle(self._update)
#to make sure the widgets are updated when their data sources
#are updated.
for dataMod in self._mm.mods("active", type="chars"):
if hasattr(dataMod, "updated"):
dataMod.updated.handle(self._update)
self.active = True
def disable(self):
self.active = False
del self._modules
del self._widgets
def createWidget(self):
"""Creates a keyboard widget. It has one OT-style event:
letterChosen. Handlers should add the as argument passed char
to their input box.
"""
kw = KeyboardsWidget(
self._modules.default(type="event").createEvent,
self._modules.sort("active", type="chars")
)
self._widgets.add(weakref.ref(kw))
return kw
def _update(self):
for ref in self._widgets:
widget = ref()
if widget is not None:
widget.update()
def init(moduleManager):
return CharsKeyboardModule(moduleManager)
|