Source code for camelot.view.controls.decorated_line_edit

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import six

from ...core.qt import QtCore, QtGui, QtWidgets
from ..art import ColorScheme
from .editors.customeditor import draw_tooltip_visualization


[docs]class DecoratedLineEdit(QtWidgets.QLineEdit): """ A QLineEdit with additional decorations : * a validity, which will trigger the background color """ arrow_down_key_pressed = QtCore.qt_signal() _font_metrics = None _background_color = None def __init__(self, parent = None): super( DecoratedLineEdit, self ).__init__( parent = parent ) if self._font_metrics is None: self._font_metrics = QtGui.QFontMetrics(QtWidgets.QApplication.font()) self._background_color = self.palette().color(self.backgroundRole()) self.textChanged.connect(self.text_changed)
[docs] def set_minimum_width(self, width): """Set the minimum width of the line edit, measured in number of characters. Use a number of characters the content of the editor is unknown, but a sample string can be used if the input pattern is known (such as a formatted date or a code) for greater accuracy. :param width: the number of characters that should be visible in the editor or a string that should fit in the editor """ if isinstance( width, six.string_types ): self.setMinimumWidth( self._font_metrics.width( width ) ) else: self.setMinimumWidth( self._font_metrics.averageCharWidth() )
@QtCore.qt_slot(six.text_type) def text_changed(self, text): self._update_background_color() def setValidator(self, validator): if self.validator() != validator: super(DecoratedLineEdit, self).setValidator(validator) # updating the bg color should only be needed when the validat did # actually change, however this seems to break the virtualaddresseditor # when the existing input is invalid self._update_background_color() def _update_background_color(self): palette = self.palette() if self.hasAcceptableInput(): palette.setColor(self.backgroundRole(), self._background_color) else: palette.setColor(self.backgroundRole(), ColorScheme.orange_2) self.setPalette(palette) def keyPressEvent(self, e): if e.key() == QtCore.Qt.Key_Down: self.arrow_down_key_pressed.emit() QtWidgets.QLineEdit.keyPressEvent(self, e) def paintEvent(self, event): super(DecoratedLineEdit, self).paintEvent(event) if self.toolTip(): draw_tooltip_visualization(self)