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99 lines
3.8 KiB
Python
99 lines
3.8 KiB
Python
# Created By: Virgil Dupras
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# Created On: 2009-12-10
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# Copyright 2014 Hardcoded Software (http://www.hardcoded.net)
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#
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# This software is licensed under the "BSD" License as described in the "LICENSE" file,
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# which should be included with this package. The terms are also available at
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# http://www.hardcoded.net/licenses/bsd_license
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from PyQt5.QtCore import pyqtSignal, Qt
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from PyQt5.QtGui import QIcon, QPixmap, QPainter, QPalette
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from PyQt5.QtWidgets import QToolButton, QLineEdit, QStyle, QStyleOptionFrame
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from hscommon.trans import trget
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tr = trget('qtlib')
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# IMPORTANT: For this widget to work propertly, you have to add "search_clear_13" from the
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# "images" folder in your resources.
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class LineEditButton(QToolButton):
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def __init__(self, parent, **kwargs):
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super().__init__(parent, **kwargs)
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pixmap = QPixmap(':/search_clear_13')
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self.setIcon(QIcon(pixmap))
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self.setIconSize(pixmap.size())
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self.setCursor(Qt.ArrowCursor)
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self.setPopupMode(QToolButton.InstantPopup)
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stylesheet = "QToolButton { border: none; padding: 0px; }"
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self.setStyleSheet(stylesheet)
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class SearchEdit(QLineEdit):
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def __init__(self, parent=None, immediate=False, **kwargs):
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# immediate: send searchChanged signals at each keystroke.
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super().__init__(parent, **kwargs)
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self._clearButton = LineEditButton(self)
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frameWidth = self.style().pixelMetric(QStyle.PM_DefaultFrameWidth)
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paddingRight = self._clearButton.sizeHint().width() + frameWidth + 1
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stylesheet = "QLineEdit {{ padding-right:{0}px; }}".format(paddingRight)
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self.setStyleSheet(stylesheet)
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self.inactiveText = tr("Search...")
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self.immediate = immediate
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self._updateClearButton(self.text())
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self._clearButton.clicked.connect(self._clearSearch)
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self.returnPressed.connect(self._returnPressed)
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self.textChanged.connect(self._textChanged)
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#--- Private
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def _clearSearch(self):
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self.clear()
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self.searchChanged.emit()
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def _updateClearButton(self, text):
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self._clearButton.setVisible(bool(text))
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#--- QLineEdit overrides
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def resizeEvent(self, event):
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frameWidth = self.style().pixelMetric(QStyle.PM_DefaultFrameWidth)
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rect = self.rect()
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rightHint = self._clearButton.sizeHint()
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rightX = rect.right() - frameWidth - rightHint.width()
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rightY = (rect.bottom() - rightHint.height()) // 2
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self._clearButton.move(rightX, rightY)
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def paintEvent(self, event):
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QLineEdit.paintEvent(self, event)
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if not bool(self.text()) and self.inactiveText and not self.hasFocus():
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panel = QStyleOptionFrame()
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self.initStyleOption(panel)
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textRect = self.style().subElementRect(QStyle.SE_LineEditContents, panel, self)
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leftMargin = 2
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rightMargin = self._clearButton.iconSize().width()
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textRect.adjust(leftMargin, 0, -rightMargin, 0)
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painter = QPainter(self)
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disabledColor = self.palette().brush(QPalette.Disabled, QPalette.Text).color()
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painter.setPen(disabledColor)
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painter.drawText(textRect, Qt.AlignLeft|Qt.AlignVCenter, self.inactiveText)
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def keyPressEvent(self, event):
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key = event.key()
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if key == Qt.Key_Escape:
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self._clearSearch()
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else:
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QLineEdit.keyPressEvent(self, event)
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#--- Event Handlers
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def _returnPressed(self):
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if not self.immediate:
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self.searchChanged.emit()
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def _textChanged(self, text):
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self._updateClearButton(text)
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if self.immediate:
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self.searchChanged.emit()
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#--- Signals
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searchChanged = pyqtSignal() # Emitted when return is pressed or when the test is cleared
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