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Wang Dequan
285
lib/python/qtvcp/widgets/entry_widget.py
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285
lib/python/qtvcp/widgets/entry_widget.py
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#!/usr/bin/env python3
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# QTVcp Widget
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#
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# Copyright (c) 2017 Chris Morley
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# base code Found on Code Cookbook
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#
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# This widget pops up an onscreen keyboard for entries
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# Used in the Macro and MDI line widget
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from qtpy import QtWidgets, QtCore, QtGui
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#from decimal import Decimal
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# applicationle widgets
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SIP_WIDGETS = [QtWidgets.QLineEdit]
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class MyFlatPushButton(QtWidgets.QPushButton):
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def __init__(self, caption, min_size=(50, 50)):
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self.MIN_SIZE = min_size
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super(MyFlatPushButton, self).__init__(caption)
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self.setFocusPolicy(QtCore.Qt.NoFocus)
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def sizeHint(self):
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return QtCore.QSize(self.MIN_SIZE[0], self.MIN_SIZE[1])
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class SoftInputWidget(QtWidgets.QDialog):
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def __init__(self, parent=None, keyboard_type='default'):
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super(SoftInputWidget, self).__init__(parent)
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self.setWindowModality(QtCore.Qt.ApplicationModal)
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self.setWindowFlags(self.windowFlags() | QtCore.Qt.FramelessWindowHint |
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QtCore.Qt.WindowStaysOnTopHint)
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self.INPUT_WIDGET = None
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self.PARENT_OBJECT = parent
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self.signalMapper = QtCore.QSignalMapper(self)
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self.NO_ORD_KEY_LIST = list()
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self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Left)
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self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Up)
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self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Right)
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self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Down)
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self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Backspace)
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self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Enter)
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self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Tab)
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self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Escape)
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self.do_layout(keyboard_type)
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mapped = getattr(self.signalMapper, 'mappedInt', None) or self.signalMapper.mapped[int]
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mapped.connect(self.buttonClicked)
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def do_layout(self, keyboard_type='default'):
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"""
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@param keyboard_type:
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@return:
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"""
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gl = QtWidgets.QVBoxLayout()
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self.setFont(self.PARENT_OBJECT.font())
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number_widget_list = []
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sym_list = list(range(0, 10))
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for sym in sym_list:
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button = MyFlatPushButton(str(sym))
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button.KEY_CHAR = ord(str(sym))
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number_widget_list.append(button)
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# alphabets
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alpha_widget_list = []
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sym_list = ['Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P',
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'new_row',
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'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L',
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'new_row',
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'Z', 'X', 'C', 'V', 'B', 'N', 'M']
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for sym in sym_list:
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if sym == 'new_row':
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alpha_widget_list.append('new_row')
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else:
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button = MyFlatPushButton(sym)
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button.KEY_CHAR = ord(sym)
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alpha_widget_list.append(button)
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button = MyFlatPushButton('.')
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button.KEY_CHAR = ord('.')
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alpha_widget_list.append(button)
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button = MyFlatPushButton('-')
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button.KEY_CHAR = ord('-')
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alpha_widget_list.append(button)
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control_widget_list = []
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button = MyFlatPushButton('LINE\nUP')
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button.setToolTip('Cursor Up')
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button.KEY_CHAR = QtCore.Qt.Key_Up
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control_widget_list.append(button)
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button = MyFlatPushButton('LINE\nDOWN')
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button.setToolTip('Cursor Down')
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button.KEY_CHAR = QtCore.Qt.Key_Down
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control_widget_list.append(button)
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# space
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button = MyFlatPushButton('SPACE', min_size=(160, 50))
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button.KEY_CHAR = QtCore.Qt.Key_Space
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control_widget_list.append(button)
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# back space
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button = MyFlatPushButton('BACK')
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button.setToolTip('Backspace')
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button.KEY_CHAR = QtCore.Qt.Key_Backspace
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control_widget_list.append(button)
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# close
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button = MyFlatPushButton('CLOSE')
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button.setToolTip('Close Keyboard')
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button.KEY_CHAR = QtCore.Qt.Key_Escape
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control_widget_list.append(button)
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# enter
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button = MyFlatPushButton('ENTER', min_size=(105, 50))
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button.setToolTip('Enter Command')
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button.KEY_CHAR = QtCore.Qt.Key_Enter
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control_widget_list.append(button)
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MAX_COL = 10
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col = 0
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tlist = list()
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if keyboard_type == 'numeric':
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widget_list = number_widget_list
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elif keyboard_type == 'alpha':
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widget_list = alpha_widget_list
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else:
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widget_list = list()
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widget_list.extend(number_widget_list)
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widget_list.append('new_row')
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widget_list.extend(alpha_widget_list)
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widget_list.append('new_row')
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widget_list.extend(control_widget_list)
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for widget in widget_list:
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if widget == 'new_row':
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col = MAX_COL
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else:
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tlist.append(widget)
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widget.clicked.connect(self.signalMapper.map)
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self.signalMapper.setMapping(widget, widget.KEY_CHAR)
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if col == MAX_COL:
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col = 0
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v = QtWidgets.QHBoxLayout()
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v.addStretch()
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v.setSpacing(5)
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list(map(v.addWidget, tlist))
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v.addStretch()
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gl.addLayout(v)
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tlist = []
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else:
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col += 1
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v = QtWidgets.QHBoxLayout()
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v.setSpacing(5)
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v.addStretch()
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list(map(v.addWidget, tlist))
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v.addStretch()
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gl.addLayout(v)
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gl.setContentsMargins(4, 4, 4, 4)
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gl.setSpacing(4)
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gl.setSizeConstraint(gl.SetFixedSize)
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self.setLayout(gl)
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def reject(self):
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self.buttonClicked(QtCore.Qt.Key_Escape)
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def buttonClicked(self, char_ord):
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w = self.INPUT_WIDGET
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if char_ord in self.NO_ORD_KEY_LIST:
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keyPress = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, char_ord, QtCore.Qt.NoModifier, '')
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else:
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keyPress = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, char_ord, QtCore.Qt.NoModifier, chr(char_ord))
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# hide on enter or esc button click
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if char_ord == QtCore.Qt.Key_Escape:
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self.hide()
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else:
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# send keypress event to widget
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QtWidgets.QApplication.sendEvent(w, keyPress)
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if char_ord == QtCore.Qt.Key_Enter:
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self.hide()
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# line edit returnPressed event is triggering twice for press and release both
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# that is why do not send release event for special key
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if char_ord not in self.NO_ORD_KEY_LIST:
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keyRelease = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, char_ord, QtCore.Qt.NoModifier, '')
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QtWidgets.QApplication.sendEvent(w, keyRelease)
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def show_input_panel(self, widget):
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self.INPUT_WIDGET = widget
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self.show()
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self.update_panel_position()
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self.setFocus()
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self.raise_()
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def update_panel_position(self):
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widget = self.INPUT_WIDGET
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if not widget: return
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widget_rect = widget.rect()
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widget_bottom = widget.mapToGlobal(QtCore.QPoint(widget.frameGeometry().x(),
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widget.frameGeometry().y())).y()
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screen_height = QtWidgets.QApplication.primaryScreen().availableGeometry().height()
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input_panel_height = self.geometry().height() + 5
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if (screen_height - widget_bottom) > input_panel_height:
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# display input panel at bottom of widget
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panelPos = QtCore.QPoint(widget_rect.left(), widget_rect.bottom() + 2)
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else:
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# display input panel at top of widget
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panelPos = QtCore.QPoint(widget_rect.left(), widget_rect.top() - input_panel_height)
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panelPos = widget.mapToGlobal(panelPos)
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self.move(panelPos)
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# a widget that calls our keyboard dialog
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class TouchInterface(QtWidgets.QWidget):
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def __init__(self, parent):
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super(TouchInterface, self).__init__(parent)
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self._PARENT_WIDGET = parent
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self._input_panel_alpha = SoftInputWidget(parent, 'alpha')
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self._input_panel_numeric = SoftInputWidget(parent, 'numeric')
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self._input_panel_full = SoftInputWidget(parent, 'default')
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self.keyboard_enable = True
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self.keyboard_type = 'numeric'
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def childEvent(self, event):
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if event.type() == QtCore.QEvent.ChildAdded:
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if isinstance(event.child(), *SIP_WIDGETS):
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event.child().installEventFilter(self)
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def eventFilter(self, widget, event):
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try:
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if self._PARENT_WIDGET.focusWidget() == widget and event.type() == QtCore.QEvent.MouseButtonPress:
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if self.keyboard_enable is False:
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return False
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self.callDialog(widget, self.keyboard_type.lower())
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return False
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except:
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return False
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# can be class patched to call other entries - like qtvcp dialogs
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def callDialog(self, widget, ktype):
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if ktype == 'alpha':
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self._input_panel_alpha.show_input_panel(widget)
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elif ktype == 'numeric':
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self._input_panel_numeric.show_input_panel(widget)
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else:
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self._input_panel_full.show_input_panel(widget)
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## testing ##
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if __name__ == '__main__':
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import sys
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from qtpy.QtWidgets import QWidget
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app = QtWidgets.QApplication([])
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w = QWidget()
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w.setGeometry(100, 100, 200, 100)
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w.setWindowTitle('Entry Widget')
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line = QtWidgets.QLineEdit()
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layout = QtWidgets.QVBoxLayout()
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layout.addWidget(line)
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test = TouchInterface(line)
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# test.callDialog(line, 'numeric')
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# test.callDialog(line, 'alpha')
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test.callDialog(line, 'default')
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w.setLayout(layout)
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w.show()
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sys.exit(app.exec())
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