qNote4x/QTextEditEnhanced.py at master · GetKool/qNote4x · GitHub

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from os import path

from qgis.PyQt import uic
from qgis.PyQt.QtCore import QEvent, Qt, QUrl
from qgis.PyQt.QtGui import QBrush, QDesktopServices, QTextCharFormat, QTextCursor
from qgis.PyQt.QtWidgets import QApplication, QDialog, QTextEdit, QToolTip


class QTextEditEnhanced(QTextEdit):
    def __init__(self, parent):
        super().__init__(parent)
        self.setMouseTracking(True)

        pluginPath = path.dirname(path.abspath(__file__))
        self.link_window = uic.loadUi(path.join(pluginPath, "ui/ui_hyperlink.ui"))

    def event(self, e):
        if e.type() == QEvent.Type.ToolTip:
            pos = e.pos()
            pos.setX(pos.x() - self.viewportMargins().left())
            pos.setY(pos.y() - self.viewportMargins().top())

            cursor = self.cursorForPosition(pos)
            cursor.select(QTextCursor.SelectionType.WordUnderCursor)

            text = self.anchorAt(e.pos())
            if text:
                QToolTip.showText(e.globalPos(), f"{text} [Ctrl + click]")
            else:
                QToolTip.hideText()
            return True

        return super().event(e)

    def mouseMoveEvent(self, e):
        if self.anchorAt(e.pos()):
            QApplication.setOverrideCursor(Qt.CursorShape.PointingHandCursor)
        else:
            self.restoreDefaultCursor()

        super().mouseMoveEvent(e)

    def leaveEvent(self, e):
        super().leaveEvent(e)
        self.restoreDefaultCursor()

    def mousePressEvent(self, e):
        if e.button() == Qt.MouseButton.RightButton:
            menu = self.createStandardContextMenu()
            menu.addSeparator()
            addHyperLinkAction = menu.addAction("Add Hyperlink")
            action = menu.exec(self.mapToGlobal(e.pos()))
            if action == addHyperLinkAction:
                self.showAddHyperLinkUi()

        super().mousePressEvent(e)

    def mouseReleaseEvent(self, e):
        if e.modifiers() & Qt.KeyboardModifier.ControlModifier:
            anchor = self.anchorAt(e.pos())
            if anchor:
                # Try URL first; if there is no scheme, fall back to local file.
                url = QUrl(anchor)
                if not url.scheme():
                    url = QUrl.fromLocalFile(anchor)
                QDesktopServices.openUrl(url)

        super().mouseReleaseEvent(e)

    def restoreDefaultCursor(self):
        while QApplication.overrideCursor() is not None:
            QApplication.restoreOverrideCursor()

    def showAddHyperLinkUi(self):
        self.link_window.eText.setText(self.textCursor().selectedText())
        self.link_window.eLink.clear()

        if self.link_window.exec() == QDialog.DialogCode.Accepted:
            linkName = self.link_window.eText.text()
            linkAddress = self.link_window.eLink.text()

            cursor = self.textCursor()
            cursor.insertHtml(f'<a href="{linkAddress}">{linkName}</a>')

            charFormat = QTextCharFormat()
            charFormat.setForeground(QBrush())
            cursor.insertText(" ", charFormat)