PYQT TOUCH INPUT WIDGET
Python, 286 lines
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from decimal import Decimal
# applicationle widgets
SIP_WIDGETS = [QtGui.QLineEdit]
class MyFlatPushButton(QtGui.QPushButton):
def __init__(self, caption, min_size=(50, 50)):
self.MIN_SIZE = min_size
QtGui.QPushButton.__init__(self, caption)
self.setFocusPolicy(QtCore.Qt.NoFocus)
def sizeHint(self):
return QtCore.QSize(self.MIN_SIZE[0], self.MIN_SIZE[1])
class SoftInputWidget(QtGui.QDialog):
def __init__(self, parent_object, keyboard_type='default'):
QtGui.QDialog.__init__(self)
self.setWindowFlags(QtCore.Qt.Tool | QtCore.Qt.WindowStaysOnTopHint | QtCore.Qt.FramelessWindowHint)
self.INPUT_WIDGET = None
self.PARENT_OBJECT = parent_object
self.signalMapper = QtCore.QSignalMapper(self)
self.NO_ORD_KEY_LIST = list()
self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Left)
self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Up)
self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Right)
self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Down)
self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Backspace)
self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Enter)
self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Tab)
self.NO_ORD_KEY_LIST.append(QtCore.Qt.Key_Escape)
self.do_layout(keyboard_type)
self.signalMapper.mapped[int].connect(self.buttonClicked)
def do_layout(self, keyboard_type='default'):
"""
@param keyboard_type:
@return:
"""
gl = QtGui.QVBoxLayout()
self.setFont(self.PARENT_OBJECT.font())
number_widget_list = []
sym_list = range(0, 10)
for sym in sym_list:
button = MyFlatPushButton(str(sym))
button.KEY_CHAR = ord(str(sym))
number_widget_list.append(button)
button = MyFlatPushButton('*')
button.KEY_CHAR = ord('*')
number_widget_list.append(button)
# alphabets
alpha_widget_list = []
sym_list = ['q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p',
'new_row',
'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l',
'new_row',
'z', 'x', 'c', 'v', 'b', 'n', 'm']
for sym in sym_list:
if sym == 'new_row':
alpha_widget_list.append('new_row')
else:
button = MyFlatPushButton(sym)
button.KEY_CHAR = ord(sym)
alpha_widget_list.append(button)
# back space
control_widget_list = []
button = MyFlatPushButton('<B')
button.setToolTip('Backspace')
button.KEY_CHAR = QtCore.Qt.Key_Backspace
control_widget_list.append(button)
control_widget_list.append('sep')
# tab
button = MyFlatPushButton('>T')
button.KEY_CHAR = QtCore.Qt.Key_Tab
control_widget_list.append(button)
control_widget_list.append('sep')
# space
button = MyFlatPushButton('SPC')
button.KEY_CHAR = QtCore.Qt.Key_Space
control_widget_list.append(button)
control_widget_list.append('sep')
# close
button = MyFlatPushButton('X')
button.KEY_CHAR = QtCore.Qt.Key_Escape
control_widget_list.append(button)
control_widget_list.append('sep')
# enter
button = MyFlatPushButton('ENT', min_size=(110, 60))
button.KEY_CHAR = QtCore.Qt.Key_Enter
control_widget_list.append(button)
control_widget_list.append('sep')
alist = list()
alist.append((QtCore.Qt.Key_Left, 'L-A'))
alist.append((QtCore.Qt.Key_Right, 'R-A'))
alist.append((QtCore.Qt.Key_Up, 'U-A'))
alist.append((QtCore.Qt.Key_Down, 'D-A'))
for key in alist:
button = MyFlatPushButton(key[1])
button.KEY_CHAR = key[0]
control_widget_list.append(button)
MAX_COL = 10
col = 0
tlist = list()
if keyboard_type == 'numeric':
widget_list = number_widget_list
elif keyboard_type == 'alpha':
widget_list = alpha_widget_list
else:
widget_list = list()
widget_list.extend(number_widget_list)
widget_list.append('new_row')
widget_list.extend(alpha_widget_list)
widget_list.append('new_row')
widget_list.extend(control_widget_list)
for widget in widget_list:
if widget == 'new_row':
col = MAX_COL
elif widget == 'sep':
tlist.append(self.get_vline())
continue
else:
tlist.append(widget)
widget.clicked.connect(self.signalMapper.map)
self.signalMapper.setMapping(widget, widget.KEY_CHAR)
if col == MAX_COL:
col = 0
v = QtGui.QHBoxLayout()
v.addStretch()
v.setSpacing(5)
map(v.addWidget, tlist)
v.addStretch()
gl.addLayout(v)
tlist = []
else:
col += 1
v = QtGui.QHBoxLayout()
v.setSpacing(5)
v.addStretch()
map(v.addWidget, tlist)
v.addStretch()
gl.addLayout(v)
gl.setContentsMargins(0, 0, 0, 0)
gl.setSpacing(5)
gl.setSizeConstraint(gl.SetFixedSize)
self.setLayout(gl)
def reject(self):
self.buttonClicked(QtCore.Qt.Key_Escape)
def buttonClicked(self, char_ord):
w = self.INPUT_WIDGET
if char_ord in self.NO_ORD_KEY_LIST:
keyPress = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, char_ord, QtCore.Qt.NoModifier, '')
else:
keyPress = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, char_ord, QtCore.Qt.NoModifier, chr(char_ord))
# send keypress event to widget
QtGui.QApplication.sendEvent(w, keyPress)
# line edit returnPressed event is triggering twise for press and release both
# that is why do not send release event for special key
if char_ord not in self.NO_ORD_KEY_LIST:
keyRelease = QtGui.QKeyEvent(QtCore.QEvent.KeyPress, char_ord, QtCore.Qt.NoModifier, '')
QtGui.QApplication.sendEvent(w, keyRelease)
# hide on enter or esc button click
if char_ord in (QtCore.Qt.Key_Enter, QtCore.Qt.Key_Escape):
self.hide()
def show_input_panel(self, widget):
self.INPUT_WIDGET = widget
self.show()
self.update_panel_position()
def update_panel_position(self):
widget = self.INPUT_WIDGET
if not widget: return
widget_rect = widget.rect()
widget_bottom = widget.mapToGlobal(QtCore.QPoint(widget.frameGeometry().x(), widget.frameGeometry().y())).y()
screen_height = QtGui.qApp.desktop().availableGeometry().height()
input_panel_height = self.geometry().height() + 5
if (screen_height - widget_bottom) > input_panel_height:
# display input panel at bottom of widget
panelPos = QtCore.QPoint(widget_rect.left(), widget_rect.bottom() + 2)
else:
# display input panel at top of widget
panelPos = QtCore.QPoint(widget_rect.left(), widget_rect.top() - input_panel_height)
panelPos = widget.mapToGlobal(panelPos)
self.move(panelPos)
def _get_line(self, vertical=True):
line = QtGui.QFrame()
line.setContentsMargins(0, 0, 0, 0)
if vertical is True:
line.setFrameShape(line.VLine)
else:
line.setFrameShape(line.HLine)
line.setFrameShadow(line.Sunken)
return line
def get_hline(self):
return self._get_line(vertical=False)
def get_vline(self):
return self._get_line()
class TouchInterface(QtCore.QObject):
def __init__(self, PARENT_WIDGET):
QtCore.QObject.__init__(self)
self._PARENT_WIDGET = PARENT_WIDGET
self._input_panel_all = SoftInputWidget(PARENT_WIDGET, 'default')
self._input_panel_numeric = SoftInputWidget(PARENT_WIDGET, 'numeric')
def childEvent(self, event):
if event.type() == QtCore.QEvent.ChildAdded:
if isinstance(event.child(), *SIP_WIDGETS):
event.child().installEventFilter(self)
def eventFilter(self, widget, event):
if self._PARENT_WIDGET.focusWidget() == widget and event.type() == QtCore.QEvent.MouseButtonPress:
if hasattr(widget, 'keyboard_type'):
if widget.keyboard_type == 'default':
self._input_panel_all.show_input_panel(widget)
elif widget.keyboard_type == 'numeric':
self._input_panel_numeric.show_input_panel(widget)
return False
class TouchInputWidget(QtGui.QWidget):
def __init__(self):
QtGui.QWidget.__init__(self)
self.touch_interface = TouchInterface(self)
def childEvent(self, event):
self.touch_interface.childEvent(event)
def eventFilter(self, widget, event):
return self.touch_interface.eventFilter(widget, event)
class ExampleWidget(TouchInputWidget):
def __init__(self):
TouchInputWidget.__init__(self)
self.txtNumeric = QtGui.QLineEdit()
# actiate touch input
self.txtNumeric.keyboard_type = 'numeric'
self.txtText = QtGui.QLineEdit()
# activate touch input
self.txtText.keyboard_type = 'default'
gl = QtGui.QVBoxLayout()
gl.addWidget(self.txtNumeric)
gl.addWidget(self.txtText)
self.setWindowTitle('Touch Input Demo')
self.setLayout(gl)
if __name__ == '__main__':
app = QtGui.QApplication([])
ExampleWidget().show()
app.exec_()
|
I run this recipe, but it seems something wrong with it. It do not generate the soft keyboard and it can not input and output. As I am a beginner of Python. Can somebody kindly give some instruction about this recipe? regards
Click on input box to activate the soft keyboard
Hello, mate.
First of all I want to say this keyboard works really well, awesome.
I want to try it into my app and I don't know how to bind my QLineEdit focus/click event (MainWindow and widgets and stuff were created with QtDesigner) to trigger out your keyboard focusing my QLineEdit, if you could explain how to do it/how it works that would be awesome cause I really want to learn about python/PyQt.
My "MainWindow" class looks like:
First, .ui import
form_class = uic.loadUiType("example.ui")[0]
My class
class MyWindow(QtGui.QMainWindow, form_class): def __init__ (self, parent=None): QtGui.QMainWindow.__init__(self, parent)
And here inside is my QLineEdit, called 'inputDialog', and some functions related to QLineEdit
when I press a button, I just want your Keyboard to be the input,
instead of the 'physical' keyboard
Thanks for your work!!
Well, markdown syntax didn't worked as expected, hope you understand my code and thanks again for uploading yours.
You Need to subclass the TouchInputWidget and add the qlineedit and set the attribute keyboard_type I dont know how you can do this in qtdesigner
I'll paste you my code: 'link' <- Here
I've pasted your code, deleted your "ExampleWidget" class and subclass "TouchInputWidget", I've done something wrong cause it doesn't seem to work.
My app is a very simple test, is just a converter.
My "main" class is MyWindowClass.
inputDialog is a QLineEdit, I've added keyboard_type.
I'm still pretty new to OOP, I really want to learn! I would be realy grateful if you help me a bit (:
Thanks again!
I am not familiar with qt designer I suggest you write your UI in plain python only and qt framework is very nice you dont need any designer to create a UI.
'THIS' is exactly the same but withoutQtDesigner. QtDesigner only places the widgets and set their geometry. Now I simply set a main window with a QLineEdit, exactly as it is in your code. May you tell me what I'm doing wrong?
Jshah, may you help me?
check this : http://pastebin.com/wXNSFT5F