--- a/E5Gui/E5LineEdit.py Sun Sep 26 15:18:07 2010 +0200
+++ b/E5Gui/E5LineEdit.py Sun Sep 26 20:25:09 2010 +0200
@@ -7,13 +7,42 @@
Module implementing specialized line edits.
"""
-from PyQt4.QtCore import Qt
-from PyQt4.QtGui import QLineEdit, QStyleOptionFrameV2, QStyle, QPainter, QPalette
+from PyQt4.QtCore import pyqtSignal, Qt, QEvent
+from PyQt4.QtGui import QLineEdit, QStyleOptionFrameV2, QStyle, QPainter, QPalette, \
+ QWidget, QHBoxLayout, QBoxLayout, QLayout, QApplication, QSpacerItem, QSizePolicy
+
+class SideWidget(QWidget):
+ """
+ Class implementing the side widgets for the line edit class.
+ """
+ sizeHintChanged = pyqtSignal()
+
+ def __init__(self, parent = None):
+ """
+ Constructor
+
+ @param parent reference to the parent widget (QWidget)
+ """
+ QWidget.__init__(self, parent)
+
+ def event(self, evt):
+ """
+ Protected method to handle events.
+
+ @param reference to the event (QEvent)
+ @return flag indicating, whether the event was recognized (boolean)
+ """
+ if evt.type() == QEvent.LayoutRequest:
+ self.sizeHintChanged.emit()
+ return QWidget.event(self, evt)
class E5LineEdit(QLineEdit):
"""
Class implementing a line edit widget showing some inactive text.
"""
+ LeftSide = 0
+ RightSide = 1
+
def __init__(self, parent = None, inactiveText = ""):
"""
Constructor
@@ -23,7 +52,184 @@
"""
QLineEdit.__init__(self, parent)
+ self.setMinimumHeight(22)
+
self.__inactiveText = inactiveText
+
+ self.__leftWidget = SideWidget(self)
+ self.__leftWidget.resize(0, 0)
+ self.__leftLayout = QHBoxLayout(self.__leftWidget)
+ self.__leftLayout.setContentsMargins(0, 0, 0, 0)
+ if QApplication.isRightToLeft():
+ self.__leftLayout.setDirection(QBoxLayout.RightToLeft)
+ else:
+ self.__leftLayout.setDirection(QBoxLayout.LeftToRight)
+ self.__leftLayout.setSizeConstraint(QLayout.SetFixedSize)
+
+ self.__rightWidget = SideWidget(self)
+ self.__rightWidget.resize(0, 0)
+ self.__rightLayout = QHBoxLayout(self.__rightWidget)
+ self.__rightLayout.setContentsMargins(0, 0, 0, 0)
+ if self.isRightToLeft():
+ self.__rightLayout.setDirection(QBoxLayout.RightToLeft)
+ else:
+ self.__rightLayout.setDirection(QBoxLayout.LeftToRight)
+ horizontalSpacer = QSpacerItem(0, 0, QSizePolicy.Expanding, QSizePolicy.Minimum)
+ self.__rightLayout.addItem(horizontalSpacer)
+
+ self.setWidgetSpacing(3)
+ self.__leftWidget.sizeHintChanged.connect(self._updateTextMargins)
+ self.__rightWidget.sizeHintChanged.connect(self._updateTextMargins)
+
+ def event(self, evt):
+ """
+ Protected method to handle events.
+
+ @param reference to the event (QEvent)
+ @return flag indicating, whether the event was recognized (boolean)
+ """
+ if evt.type() == QEvent.LayoutDirectionChange:
+ if self.isRightToLeft():
+ self.__leftLayout.setDirection(QBoxLayout.RightToLeft)
+ self.__rightLayout.setDirection(QBoxLayout.RightToLeft)
+ else:
+ self.__leftLayout.setDirection(QBoxLayout.LeftToRight)
+ self.__rightLayout.setDirection(QBoxLayout.LeftToRight)
+ return QLineEdit.event(self, evt)
+
+ def resizeEvent(self, evt):
+ """
+ Protected method to handle resize events.
+
+ @param evt reference to the resize event (QResizeEvent)
+ """
+ self.__updateSideWidgetLocations()
+ QLineEdit.resizeEvent(self, evt)
+
+ def paintEvent(self, evt):
+ """
+ Protected method handling a paint event.
+
+ @param evt reference to the paint event (QPaintEvent)
+ """
+ QLineEdit.paintEvent(self, evt)
+ if not self.text() and \
+ self.__inactiveText and \
+ not self.hasFocus():
+ panel = QStyleOptionFrameV2()
+ 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 __updateSideWidgetLocations(self):
+ """
+ Private method to update the side widget locations.
+ """
+ opt = QStyleOptionFrameV2()
+ self.initStyleOption(opt)
+ textRect = \
+ self.style().subElementRect(QStyle.SE_LineEditContents, opt, self)
+ textRect.adjust(2, 0, 0, 0)
+
+ left = self.textMargin(self.LeftSide)
+
+ midHeight = textRect.center().y() + 1
+
+ if self.__leftLayout.count() > 0:
+ leftHeight = midHeight - self.__leftWidget.height() // 2
+ leftWidth = self.__leftWidget.width()
+ if leftWidth == 0:
+ leftHeight = midHeight - self.__leftWidget.sizeHint().height() // 2
+ self.__leftWidget.move(textRect.x(), leftHeight)
+
+ textRect.setX(left)
+ textRect.setY(midHeight - self.__rightWidget.sizeHint().height() // 2)
+ textRect.setHeight(self.__rightWidget.sizeHint().height())
+ self.__rightWidget.setGeometry(textRect)
+
+ def _updateTextMargins(self):
+ """
+ Protected slot to update the text margins.
+ """
+ left = self.textMargin(self.LeftSide)
+ right = self.textMargin(self.RightSide)
+ self.setTextMargins(left, 0, right, 0)
+ self.__updateSideWidgetLocations()
+
+ 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)
+ """
+ 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):
"""
@@ -41,22 +247,3 @@
"""
self.__inactiveText = inactiveText
self.update()
-
- def paintEvent(self, evt):
- """
- Protected method handling a paint event.
-
- @param evt reference to the paint event (QPaintEvent)
- """
- QLineEdit.paintEvent(self, evt)
- if not self.text() and \
- self.__inactiveText and \
- not self.hasFocus():
- panel = QStyleOptionFrameV2()
- self.initStyleOption(panel)
- textRect = \
- self.style().subElementRect(QStyle.SE_LineEditContents, panel, self)
- textRect.adjust(2, 0, 0, 0)
- painter = QPainter(self)
- painter.setPen(self.palette().brush(QPalette.Disabled, QPalette.Text).color())
- painter.drawText(textRect, Qt.AlignLeft | Qt.AlignVCenter, self.__inactiveText)
\ No newline at end of file
