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121 lines
4.4 KiB
Python
121 lines
4.4 KiB
Python
# Created By: Virgil Dupras
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# Created On: 2009-12-10
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# Copyright 2015 Hardcoded Software (http://www.hardcoded.net)
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#
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# This software is licensed under the "GPLv3" 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.gnu.org/licenses/gpl-3.0.html
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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 ClearableEdit(QLineEdit):
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def __init__(self, parent=None, is_clearable=True, **kwargs):
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super().__init__(parent, **kwargs)
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self._is_clearable = is_clearable
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if is_clearable:
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self._clearButton = LineEditButton(self)
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frame_width = self.style().pixelMetric(QStyle.PM_DefaultFrameWidth)
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padding_right = self._clearButton.sizeHint().width() + frame_width + 1
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stylesheet = "QLineEdit {{ padding-right:{0}px; }}".format(padding_right)
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self.setStyleSheet(stylesheet)
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self._updateClearButton()
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self._clearButton.clicked.connect(self._clearSearch)
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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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def _updateClearButton(self):
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self._clearButton.setVisible(self._hasClearableContent())
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def _hasClearableContent(self):
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return bool(self.text())
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# --- QLineEdit overrides
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def resizeEvent(self, event):
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if self._is_clearable:
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frame_width = self.style().pixelMetric(QStyle.PM_DefaultFrameWidth)
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rect = self.rect()
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right_hint = self._clearButton.sizeHint()
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right_x = rect.right() - frame_width - right_hint.width()
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right_y = (rect.bottom() - right_hint.height()) // 2
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self._clearButton.move(right_x, right_y)
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# --- Event Handlers
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def _textChanged(self, text):
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if self._is_clearable:
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self._updateClearButton()
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class SearchEdit(ClearableEdit):
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def __init__(self, parent=None, immediate=False):
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# immediate: send searchChanged signals at each keystroke.
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ClearableEdit.__init__(self, parent, is_clearable=True)
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self.inactiveText = tr("Search...")
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self.immediate = immediate
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self.returnPressed.connect(self._returnPressed)
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# --- Overrides
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def _clearSearch(self):
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ClearableEdit._clearSearch(self)
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self.searchChanged.emit()
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def _textChanged(self, text):
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ClearableEdit._textChanged(self, text)
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if self.immediate:
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self.searchChanged.emit()
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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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ClearableEdit.keyPressEvent(self, event)
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def paintEvent(self, event):
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ClearableEdit.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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text_rect = self.style().subElementRect(QStyle.SE_LineEditContents, panel, self)
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left_margin = 2
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right_margin = self._clearButton.iconSize().width()
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text_rect.adjust(left_margin, 0, -right_margin, 0)
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painter = QPainter(self)
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disabled_color = self.palette().brush(QPalette.Disabled, QPalette.Text).color()
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painter.setPen(disabled_color)
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painter.drawText(text_rect, Qt.AlignLeft | Qt.AlignVCenter, self.inactiveText)
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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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# --- Signals
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searchChanged = pyqtSignal() # Emitted when return is pressed or when the test is cleared
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