class HorizontalImageScrollArea(QScrollArea):
def __init__(self, parent=None):
super(HorizontalImageScrollArea, self).__init__(parent)
self.setWidgetResizable(True)
self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOn)
self.setFrameShape(QFrame.NoFrame)
self.layout = QHBoxLayout()
scroll = QWidget()
scroll.setLayout(self.layout)
self.setWidget(scroll)
def eventFilter(self, obj, event):
if obj == self.widget() and event.type() == QEvent.Resize:
self.widget().resize(self.calcNewSize())
return True
return super(HorizontalImageScrollArea, self).eventFilter(obj, event)
def calcNewSize(self):
height = self.viewport().height()
layoutMargins = self.layout.contentsMargins()
heightForCalc = height - layoutMargins.top() - layoutMargins.bottom()
width = self.calcWidthForHeight(heightForCalc)
return QSize(width, height)
def calcWidthForHeight(self, height):
width = 0
for wgt in range(self.layout.count()):
width += self.layout.itemAt(wgt).widget().widthForHeight(height)
if self.layout.count() > 1:
width += self.layout.spacing() * (self.layout.count() - 1)
return width
class E5LineEdit(QLineEdit):
"""
Class implementing a line edit widget showing some inactive text.
"""
LeftSide = 0
RightSide = 1
def __init__(self, parent=None, inactiveText=""):
"""
Constructor
@param parent reference to the parent widget (QWidget)
@param inactiveText text to be shown on inactivity (string)
"""
super(E5LineEdit, self).__init__(parent)
self.setMinimumHeight(22)
if qVersion() < "4.7.0":
self.__inactiveText = inactiveText
else:
self.setPlaceholderText(inactiveText)
self.__mainLayout = QHBoxLayout(self)
self.__mainLayout.setContentsMargins(0, 0, 0, 0)
self.__mainLayout.setSpacing(0)
self.__leftMargin = 0
self.__leftWidget = E5LineEditSideWidget(self)
self.__leftWidget.resize(0, 0)
self.__leftLayout = QHBoxLayout(self.__leftWidget)
self.__leftLayout.setContentsMargins(0, 0, 2, 0)
if QApplication.isRightToLeft():
self.__leftLayout.setDirection(QBoxLayout.RightToLeft)
else:
self.__leftLayout.setDirection(QBoxLayout.LeftToRight)
self.__leftLayout.setSizeConstraint(QLayout.SetFixedSize)
self.__rightWidget = E5LineEditSideWidget(self)
self.__rightWidget.resize(0, 0)
self.__rightLayout = QHBoxLayout(self.__rightWidget)
self.__rightLayout.setContentsMargins(0, 0, 2, 0)
if self.isRightToLeft():
self.__rightLayout.setDirection(QBoxLayout.RightToLeft)
else:
self.__rightLayout.setDirection(QBoxLayout.LeftToRight)
horizontalSpacer = QSpacerItem(
0, 0, QSizePolicy.Expanding, QSizePolicy.Minimum)
self.__mainLayout.addWidget(
self.__leftWidget, 0, Qt.AlignVCenter | Qt.AlignLeft)
self.__mainLayout.addItem(horizontalSpacer)
self.__mainLayout.addWidget(
self.__rightWidget, 0, Qt.AlignVCenter | Qt.AlignRight)
if self.isRightToLeft():
self.__mainLayout.setDirection(QBoxLayout.RightToLeft)
else:
self.__mainLayout.setDirection(QBoxLayout.LeftToRight)
self.setWidgetSpacing(3)
self.__leftWidget.sizeHintChanged.connect(self._updateTextMargins)
self.__rightWidget.sizeHintChanged.connect(self._updateTextMargins)
def setLeftMargin(self, margin):
"""
Public method to set the left margin.
@param margin left margin in pixel (integer)
"""
self.__leftMargin = margin
def leftMargin(self):
"""
Public method to get the size of the left margin.
@return left margin in pixel (integer)
"""
return self.__leftMargin
def event(self, evt):
"""
Public method to handle events.
@param evt reference to the event (QEvent)
@return flag indicating, whether the event was recognized (boolean)
"""
if evt.type() == QEvent.LayoutDirectionChange:
if self.isRightToLeft():
self.__mainLayout.setDirection(QBoxLayout.RightToLeft)
self.__leftLayout.setDirection(QBoxLayout.RightToLeft)
self.__rightLayout.setDirection(QBoxLayout.RightToLeft)
else:
self.__mainLayout.setDirection(QBoxLayout.LeftToRight)
self.__leftLayout.setDirection(QBoxLayout.LeftToRight)
self.__rightLayout.setDirection(QBoxLayout.LeftToRight)
return QLineEdit.event(self, evt)
def paintEvent(self, evt):
"""
Protected method handling a paint event.
@param evt reference to the paint event (QPaintEvent)
"""
super(E5LineEdit, self).paintEvent(evt)
if qVersion() < "4.7.0":
if not self.text() and \
self.__inactiveText and \
not self.hasFocus():
panel = QStyleOptionFrame()
self.initStyleOption(panel)
textRect = self.style().subElementRect(
QStyle.SE_LineEditContents, panel, self)
textRect.adjust(2, 0, 0, 0)
left = self.textMargin(self.LeftSide)
right = self.textMargin(self.RightSide)
textRect.adjust(left, 0, -right, 0)
painter = QPainter(self)
painter.setPen(self.palette().brush(
QPalette.Disabled, QPalette.Text).color())
painter.drawText(
textRect, Qt.AlignLeft | Qt.AlignVCenter,
self.__inactiveText)
def _updateTextMargins(self):
"""
Protected slot to update the text margins.
"""
if self.__leftMargin == 0:
left = self.__leftWidget.sizeHint().width()
else:
left = self.__leftMargin
right = self.__rightWidget.sizeHint().width()
top = 0
bottom = 0
self.setTextMargins(left, top, right, bottom)
def addWidget(self, widget, position):
"""
Public method to add a widget to a side.
@param widget reference to the widget to add (QWidget)
@param position position to add to (E5LineEdit.LeftSide,
E5LineEdit.RightSide)
"""
if widget is None:
return
if self.isRightToLeft():
if position == self.LeftSide:
position = self.RightSide
else:
position = self.LeftSide
if position == self.LeftSide:
self.__leftLayout.addWidget(widget)
else:
self.__rightLayout.insertWidget(1, widget)
def removeWidget(self, widget):
"""
Public method to remove a widget from a side.
@param widget reference to the widget to remove (QWidget)
"""
if widget is None:
return
self.__leftLayout.removeWidget(widget)
self.__rightLayout.removeWidget(widget)
widget.hide()
def widgetSpacing(self):
"""
Public method to get the side widget spacing.
@return side widget spacing (integer)
"""
return self.__leftLayout.spacing()
def setWidgetSpacing(self, spacing):
"""
Public method to set the side widget spacing.
@param spacing side widget spacing (integer)
"""
self.__leftLayout.setSpacing(spacing)
self.__rightLayout.setSpacing(spacing)
self._updateTextMargins()
def textMargin(self, position):
"""
Public method to get the text margin for a side.
@param position side to get margin for (E5LineEdit.LeftSide,
E5LineEdit.RightSide)
@return text margin (integer)
"""
spacing = self.__rightLayout.spacing()
w = 0
if position == self.LeftSide:
w = self.__leftWidget.sizeHint().width()
else:
w = self.__rightWidget.sizeHint().width()
if w == 0:
return 0
return w + spacing * 2
def inactiveText(self):
"""
Public method to get the inactive text.
@return inactive text (string)
"""
if qVersion() < "4.7.0":
return self.__inactiveText
else:
return self.placeholderText()
def setInactiveText(self, inactiveText):
"""
Public method to set the inactive text.
@param inactiveText text to be shown on inactivity (string)
"""
if qVersion() < "4.7.0":
self.__inactiveText = inactiveText
self.update()
else:
self.setPlaceholderText(inactiveText)
class LineEdit(QLineEdit):
inactiveText = QtDynamicProperty('inactiveText', unicode)
widgetSpacing = QtDynamicProperty('widgetSpacing', int)
def __init__(self, parent=None, contents=u""):
super(LineEdit, self).__init__(contents, parent)
box_direction = QBoxLayout.RightToLeft if self.isRightToLeft() else QBoxLayout.LeftToRight
self.inactiveText = u""
self.left_widget = SideWidget(self)
self.left_widget.resize(0, 0)
self.left_layout = QHBoxLayout(self.left_widget)
self.left_layout.setContentsMargins(0, 0, 0, 0)
self.left_layout.setDirection(box_direction)
self.left_layout.setSizeConstraint(QLayout.SetFixedSize)
self.right_widget = SideWidget(self)
self.right_widget.resize(0, 0)
self.right_layout = QHBoxLayout(self.right_widget)
self.right_layout.setContentsMargins(0, 0, 0, 0)
self.right_layout.setDirection(box_direction)
self.right_layout.addItem(QSpacerItem(0, 0, QSizePolicy.Expanding, QSizePolicy.Minimum))
self.widgetSpacing = 2
self.left_widget.sizeHintChanged.connect(self._update_text_margins)
self.right_widget.sizeHintChanged.connect(self._update_text_margins)
@property
def left_margin(self):
return self.left_widget.sizeHint().width() + 2*self.left_layout.spacing()
@property
def right_margin(self):
return self.right_widget.sizeHint().width() + 2*self.right_layout.spacing()
def _update_text_margins(self):
self.setTextMargins(self.left_margin, 0, self.right_margin, 0)
self._update_side_widget_locations()
def _update_side_widget_locations(self):
option = QStyleOptionFrame()
self.initStyleOption(option)
spacing = self.right_layout.spacing()
text_rect = self.style().subElementRect(QStyle.SE_LineEditContents, option, self)
text_rect.adjust(spacing, 0, -spacing, 0)
mid_height = text_rect.center().y() + 1 - (text_rect.height() % 2) # need -1 correction for odd heights -Dan
if self.left_layout.count() > 0:
left_height = mid_height - self.left_widget.height()/2
left_width = self.left_widget.width()
if left_width == 0:
left_height = mid_height - self.left_widget.sizeHint().height()/2
self.left_widget.move(text_rect.x(), left_height)
text_rect.setX(self.left_margin)
text_rect.setY(mid_height - self.right_widget.sizeHint().height()/2.0)
text_rect.setHeight(self.right_widget.sizeHint().height())
self.right_widget.setGeometry(text_rect)
def event(self, event):
event_type = event.type()
if event_type == QEvent.LayoutDirectionChange:
box_direction = QBoxLayout.RightToLeft if self.isRightToLeft() else QBoxLayout.LeftToRight
self.left_layout.setDirection(box_direction)
self.right_layout.setDirection(box_direction)
elif event_type == QEvent.DynamicPropertyChange:
property_name = event.propertyName()
if property_name == 'widgetSpacing':
self.left_layout.setSpacing(self.widgetSpacing)
self.right_layout.setSpacing(self.widgetSpacing)
self._update_text_margins()
elif property_name == 'inactiveText':
self.update()
return QLineEdit.event(self, event)
def resizeEvent(self, event):
self._update_side_widget_locations()
QLineEdit.resizeEvent(self, event)
def paintEvent(self, event):
QLineEdit.paintEvent(self, event)
if not self.hasFocus() and not self.text() and self.inactiveText:
options = QStyleOptionFrame()
self.initStyleOption(options)
text_rect = self.style().subElementRect(QStyle.SE_LineEditContents, options, self)
text_rect.adjust(self.left_margin+2, 0, -self.right_margin, 0)
painter = QPainter(self)
painter.setPen(self.palette().brush(QPalette.Disabled, QPalette.Text).color())
painter.drawText(text_rect, Qt.AlignLeft | Qt.AlignVCenter, self.inactiveText)
def addHeadWidget(self, widget):
if self.isRightToLeft():
self.right_layout.insertWidget(1, widget)
else:
self.left_layout.addWidget(widget)
def addTailWidget(self, widget):
if self.isRightToLeft():
self.left_layout.addWidget(widget)
else:
self.right_layout.insertWidget(1, widget)
def removeWidget(self, widget):
self.left_layout.removeWidget(widget)
self.right_layout.removeWidget(widget)
widget.hide()
class E5LineEdit(QLineEdit):
"""
Class implementing a line edit widget showing some inactive text.
"""
LeftSide = 0
RightSide = 1
def __init__(self, parent=None, inactiveText=""):
"""
Constructor
@param parent reference to the parent widget (QWidget)
@param inactiveText text to be shown on inactivity (string)
"""
super(E5LineEdit, self).__init__(parent)
self.setMinimumHeight(22)
self.setPlaceholderText(inactiveText)
self.__mainLayout = QHBoxLayout(self)
self.__mainLayout.setContentsMargins(0, 0, 0, 0)
self.__mainLayout.setSpacing(0)
self.__leftMargin = 0
self.__leftWidget = E5LineEditSideWidget(self)
self.__leftWidget.resize(0, 0)
self.__leftLayout = QHBoxLayout(self.__leftWidget)
self.__leftLayout.setContentsMargins(0, 0, 2, 0)
if QApplication.isRightToLeft():
self.__leftLayout.setDirection(QBoxLayout.RightToLeft)
else:
self.__leftLayout.setDirection(QBoxLayout.LeftToRight)
self.__leftLayout.setSizeConstraint(QLayout.SetFixedSize)
self.__rightWidget = E5LineEditSideWidget(self)
self.__rightWidget.resize(0, 0)
self.__rightLayout = QHBoxLayout(self.__rightWidget)
self.__rightLayout.setContentsMargins(0, 0, 2, 0)
if self.isRightToLeft():
self.__rightLayout.setDirection(QBoxLayout.RightToLeft)
else:
self.__rightLayout.setDirection(QBoxLayout.LeftToRight)
horizontalSpacer = QSpacerItem(0, 0, QSizePolicy.Expanding,
QSizePolicy.Minimum)
self.__mainLayout.addWidget(self.__leftWidget, 0,
Qt.AlignVCenter | Qt.AlignLeft)
self.__mainLayout.addItem(horizontalSpacer)
self.__mainLayout.addWidget(self.__rightWidget, 0,
Qt.AlignVCenter | Qt.AlignRight)
if self.isRightToLeft():
self.__mainLayout.setDirection(QBoxLayout.RightToLeft)
else:
self.__mainLayout.setDirection(QBoxLayout.LeftToRight)
self.setWidgetSpacing(3)
self.__leftWidget.sizeHintChanged.connect(self._updateTextMargins)
self.__rightWidget.sizeHintChanged.connect(self._updateTextMargins)
def setLeftMargin(self, margin):
"""
Public method to set the left margin.
@param margin left margin in pixel (integer)
"""
self.__leftMargin = margin
def leftMargin(self):
"""
Public method to get the size of the left margin.
@return left margin in pixel (integer)
"""
return self.__leftMargin
def event(self, evt):
"""
Public method to handle events.
@param evt reference to the event (QEvent)
@return flag indicating, whether the event was recognized (boolean)
"""
if evt.type() == QEvent.LayoutDirectionChange:
if self.isRightToLeft():
self.__mainLayout.setDirection(QBoxLayout.RightToLeft)
self.__leftLayout.setDirection(QBoxLayout.RightToLeft)
self.__rightLayout.setDirection(QBoxLayout.RightToLeft)
else:
self.__mainLayout.setDirection(QBoxLayout.LeftToRight)
self.__leftLayout.setDirection(QBoxLayout.LeftToRight)
self.__rightLayout.setDirection(QBoxLayout.LeftToRight)
return QLineEdit.event(self, evt)
def paintEvent(self, evt):
"""
Protected method handling a paint event.
@param evt reference to the paint event (QPaintEvent)
"""
super(E5LineEdit, self).paintEvent(evt)
def _updateTextMargins(self):
"""
Protected slot to update the text margins.
"""
if self.__leftMargin == 0:
left = self.__leftWidget.sizeHint().width()
else:
left = self.__leftMargin
right = self.__rightWidget.sizeHint().width()
top = 0
bottom = 0
self.setTextMargins(left, top, right, bottom)
def addWidget(self, widget, position):
"""
Public method to add a widget to a side.
@param widget reference to the widget to add (QWidget)
@param position position to add to (E5LineEdit.LeftSide,
E5LineEdit.RightSide)
"""
if widget is None:
return
if self.isRightToLeft():
if position == self.LeftSide:
position = self.RightSide
else:
position = self.LeftSide
if position == self.LeftSide:
self.__leftLayout.addWidget(widget)
else:
self.__rightLayout.insertWidget(1, widget)
def removeWidget(self, widget):
"""
Public method to remove a widget from a side.
@param widget reference to the widget to remove (QWidget)
"""
if widget is None:
return
self.__leftLayout.removeWidget(widget)
self.__rightLayout.removeWidget(widget)
widget.hide()
def widgetSpacing(self):
"""
Public method to get the side widget spacing.
@return side widget spacing (integer)
"""
return self.__leftLayout.spacing()
def setWidgetSpacing(self, spacing):
"""
Public method to set the side widget spacing.
@param spacing side widget spacing (integer)
"""
self.__leftLayout.setSpacing(spacing)
self.__rightLayout.setSpacing(spacing)
self._updateTextMargins()
def textMargin(self, position):
"""
Public method to get the text margin for a side.
@param position side to get margin for (E5LineEdit.LeftSide,
E5LineEdit.RightSide)
@return text margin (integer)
"""
spacing = self.__rightLayout.spacing()
w = 0
if position == self.LeftSide:
w = self.__leftWidget.sizeHint().width()
else:
w = self.__rightWidget.sizeHint().width()
if w == 0:
return 0
return w + spacing * 2
def inactiveText(self):
"""
Public method to get the inactive text.
@return inactive text (string)
"""
if qVersionTuple() < (4, 7, 0):
return self.__inactiveText
else:
return self.placeholderText()
def setInactiveText(self, inactiveText):
"""
Public method to set the inactive text.
@param inactiveText text to be shown on inactivity (string)
"""
self.setPlaceholderText(inactiveText)
class LineEdit(QLineEdit):
inactiveText = QtDynamicProperty('inactiveText', str)
widgetSpacing = QtDynamicProperty('widgetSpacing', int)
def __init__(self, parent=None, contents=""):
super(LineEdit, self).__init__(contents, parent)
box_direction = QBoxLayout.RightToLeft if self.isRightToLeft(
) else QBoxLayout.LeftToRight
self.inactiveText = ""
self.left_widget = SideWidget(self)
self.left_widget.resize(0, 0)
self.left_layout = QHBoxLayout(self.left_widget)
self.left_layout.setContentsMargins(0, 0, 0, 0)
self.left_layout.setDirection(box_direction)
self.left_layout.setSizeConstraint(QLayout.SetFixedSize)
self.right_widget = SideWidget(self)
self.right_widget.resize(0, 0)
self.right_layout = QHBoxLayout(self.right_widget)
self.right_layout.setContentsMargins(0, 0, 0, 0)
self.right_layout.setDirection(box_direction)
self.right_layout.addItem(
QSpacerItem(0, 0, QSizePolicy.Expanding, QSizePolicy.Minimum))
self.widgetSpacing = 2
self.left_widget.sizeHintChanged.connect(self._update_text_margins)
self.right_widget.sizeHintChanged.connect(self._update_text_margins)
@property
def left_margin(self):
return self.left_widget.sizeHint().width(
) + 2 * self.left_layout.spacing()
@property
def right_margin(self):
return self.right_widget.sizeHint().width(
) + 2 * self.right_layout.spacing()
def _update_text_margins(self):
self.setTextMargins(self.left_margin, 0, self.right_margin, 0)
self._update_side_widget_locations()
def _update_side_widget_locations(self):
option = QStyleOptionFrame()
self.initStyleOption(option)
spacing = self.right_layout.spacing()
text_rect = self.style().subElementRect(QStyle.SE_LineEditContents,
option, self)
text_rect.adjust(spacing, 0, -spacing, 0)
mid_height = text_rect.center().y() + 1 - (
text_rect.height() % 2) # need -1 correction for odd heights -Dan
if self.left_layout.count() > 0:
left_height = int(mid_height - self.left_widget.height() / 2)
left_width = self.left_widget.width()
if left_width == 0:
left_height = int(mid_height -
self.left_widget.sizeHint().height() / 2)
self.left_widget.move(text_rect.x(), left_height)
text_rect.setX(self.left_margin)
text_rect.setY(
int(mid_height - self.right_widget.sizeHint().height() / 2.0))
text_rect.setHeight(self.right_widget.sizeHint().height())
self.right_widget.setGeometry(text_rect)
def event(self, event):
event_type = event.type()
if event_type == QEvent.LayoutDirectionChange:
box_direction = QBoxLayout.RightToLeft if self.isRightToLeft(
) else QBoxLayout.LeftToRight
self.left_layout.setDirection(box_direction)
self.right_layout.setDirection(box_direction)
elif event_type == QEvent.DynamicPropertyChange:
property_name = event.propertyName()
if property_name == 'widgetSpacing':
self.left_layout.setSpacing(self.widgetSpacing)
self.right_layout.setSpacing(self.widgetSpacing)
self._update_text_margins()
elif property_name == 'inactiveText':
self.update()
return QLineEdit.event(self, event)
def resizeEvent(self, event):
self._update_side_widget_locations()
QLineEdit.resizeEvent(self, event)
def paintEvent(self, event):
QLineEdit.paintEvent(self, event)
if not self.hasFocus() and not self.text() and self.inactiveText:
options = QStyleOptionFrame()
self.initStyleOption(options)
text_rect = self.style().subElementRect(QStyle.SE_LineEditContents,
options, self)
text_rect.adjust(self.left_margin + 2, 0, -self.right_margin, 0)
painter = QPainter(self)
painter.setPen(self.palette().brush(QPalette.Disabled,
QPalette.Text).color())
painter.drawText(text_rect, Qt.AlignLeft | Qt.AlignVCenter,
self.inactiveText)
def addHeadWidget(self, widget):
if self.isRightToLeft():
self.right_layout.insertWidget(1, widget)
else:
self.left_layout.addWidget(widget)
def addTailWidget(self, widget):
if self.isRightToLeft():
self.left_layout.addWidget(widget)
else:
self.right_layout.insertWidget(1, widget)
def removeWidget(self, widget):
self.left_layout.removeWidget(widget)
self.right_layout.removeWidget(widget)
widget.hide()
