Details
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Bug
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Resolution: Unresolved
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P3: Somewhat important
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None
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6.3.0
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None
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Windows
Description
I have a QGraphicsView(MAIN) and QGraphicsScene(MAIN). The QGraphicsScene(MAIN) has a number of QGraphicsView(SUB).QGraphicsView(SUB) shows QTextEdit by QGraphicsScene(SUB).Each QGraphicsScene(SUB) shows each page of one QTextEdit respectively.
I'm layouting these QGraphicsView(SUB) with flow-layout-style. I can select a range of texts with mouse in one page without problem. At the time of the layouting is vertically, so is it.
But once the layouting becomes horizontally, the selection goes bad.
For example, there are three pages in one line horizontally. I put mouse on the second page.
The mouse event position returns the range of the second page of QTextEdit. Until here, there is no problem. Then I drag and go to the next page, the position x is over the document range. On the other hand, I drag and go back to the previous page, the position x becomes less than 0.
(Edit:)Moreover, the y position is unchanged. I want y position to change itself to the range of the first page height when I go back to the previous page, and the range of the third page height when I go to the next page. Only when I put mouse on an arbitrary page, the y position is loyally in the range of height of the page.
The point where I think this behavior is strange is as follows:
y coordinate is decided by the QTextEdit coordinate. Page 1 returns 0 ~ A4 height. Page 2 returns A4 height ~ A4 height*2. Page3 --.
x coordinate is also decided by the QTextEdit coordinate. Page 1 returns 0 ~ A4 width. Page2 returns 0 ~ A4 width. Page3 --.
But once, when I drag and move to the other pages, why aren't the positions decided by the QTextEdit coordinate?
If I drag and move under (vertically), I can select the next page in spite of horizontal direction. ( So I can select without problem in the case of vertical direction. This behavior seems to be unchanged in the case of horizontal direction.)
In a word , Qt doesn't allow us to select texts with mouse in the case of horizontal direction.
In the case of keyboard, there is no problem. Shift + direction key.
sample code
from PySide6.QtWidgets import QApplication, QGraphicsView, QGraphicsScene, QGraphicsProxyWidget, QTextEdit from PySide6.QtGui import QTextDocument, QPageSize, QPainter, QBrush, QTextCharFormat, QTextOption from PySide6.QtCore import Qt, Signal, QRect, QRectF, QEvent, QSize, QSizeF, QPointF class MainGraphicsView(QGraphicsView): def __init__(self, parent=None): super(MainGraphicsView, self).__init__(parent) self._mainscene = MainGraphicsScene(1) self._mainscene._mainview = self self.setScene(self._mainscene) class MainGraphicsScene(QGraphicsScene): def __init__(self, orientation = 1, parent=None): super(MainGraphicsScene, self).__init__(parent) if orientation == 0: self.rootView = TextGraphicsView() self.rootView.main_scene = self self.root_proxywidget = self.addWidget(self.rootView) self.rootView.setSceneRect(0, 0, self.document()._pageWidth, self.document()._pageHeight) self.secondaryView = SecondaryTextGraphicsView(2, self.rootView.scene()) self.secondaryView.setSceneRect(0, self.document()._pageHeight, self.document()._pageWidth, self.document()._pageHeight) self.secondary_proxywidget = self.addWidget(self.secondaryView) self.secondary_proxywidget.setPos(0, self.document()._pageHeight) self.thirdView = SecondaryTextGraphicsView(3, self.rootView.scene()) self.thirdView.setSceneRect(0, self.document()._pageHeight*2, self.document()._pageWidth, self.document()._pageHeight) self.third_proxywidget = self.addWidget(self.thirdView) self.third_proxywidget.setPos(0, self.document()._pageHeight*2) if orientation == 1: self.rootView = TextGraphicsView() self.rootView.main_scene = self self.root_proxywidget = self.addWidget(self.rootView) self.rootView.setSceneRect(0, 0, self.document()._pageWidth, self.document()._pageHeight) self.secondaryView = SecondaryTextGraphicsView(2, self.rootView.scene()) self.secondaryView.setSceneRect(0, self.document()._pageHeight, self.document()._pageWidth, self.document()._pageHeight) self.secondary_proxywidget = self.addWidget(self.secondaryView) self.secondary_proxywidget.setPos(self.document()._pageWidth, 0) self.thirdView = SecondaryTextGraphicsView(3, self.rootView.scene()) self.thirdView.setSceneRect(0, self.document()._pageHeight*2, self.document()._pageWidth, self.document()._pageHeight) self.third_proxywidget = self.addWidget(self.thirdView) self.third_proxywidget.setPos(self.document()._pageWidth*2, 0) self.setBackgroundBrush(QBrush(Qt.gray)) def view(self): return self._mainview def textedit(self): return self.document().parent() def document(self): return self.rootView.document() class TextGraphicsView(QGraphicsView): def __init__(self, parent=None): super().__init__(parent) self.page = 1 self.initScene() def mousePressEvent(self, event): SecondaryTextGraphicsView.selectedPage = self.page return QGraphicsView.mousePressEvent(self, event) def initScene(self): self.common_scene = TextGraphicsScene() self.common_scene.root_view = self self.setScene(self.common_scene) self.setSceneRect(0, self.document()._pageHeight*(self.page -1), self.document()._pageWidth, self.document()._pageHeight) self.resize(int(self.document()._pageWidth), int(self.document()._pageHeight)) self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff) self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff) def view(self): return self.main_scene._mainview def textedit(self): return self.common_scene.textedit def document(self): return self.common_scene.textedit.document() class SecondaryTextGraphicsView(QGraphicsView): def __init__(self, page, scene, parent=None): super().__init__(scene, parent) self.page = page self.initScene() self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff) self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff) def initScene(self): self.setSceneRect(0, self.document()._pageHeight*(self.page-1), self.document()._pageWidth, self.document()._pageHeight) self.resize(int(self.document()._pageWidth), int(self.document()._pageHeight)) def view(self): return self.scene().root_view.view() def textedit(self): return self.scene().textedit() def document(self): return self.scene().textedit.document() class TextGraphicsScene(QGraphicsScene): def __init__(self, parent=None): super().__init__(parent) self.textedit = TextEdit(scene=self) self.addWidget(self.textedit) def view(self): return self.root_view def document(self): return self.textedit.document() class TextEdit(QTextEdit): def __init__(self, scene, parent=None): super().__init__(parent) self.setAttribute(Qt.WA_InputMethodEnabled, True) self.setMouseTracking(False) self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff) self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff) self.scene = scene self.setDocument(TextDocument(parent=self)) self.setWordWrapMode(QTextOption.WrapAtWordBoundaryOrAnywhere) self.setLineWrapMode(self.LineWrapMode.FixedPixelWidth) self.setLineWrapColumnOrWidth(self.document()._pageWidth) self.setAttribute(Qt.WA_InputMethodEnabled, True) self.setInputMethodHints(Qt.ImhMultiLine) self.resize(self.document()._pageSize.toSize().width(), self.document()._pageSize.toSize().height()*3) self.setWordWrapMode(QTextOption.WrapAtWordBoundaryOrAnywhere) def mouseMoveEvent(self, event): print(event.position()) return QTextEdit.mouseMoveEvent(self, event) def view(self): return self.scene.root_view def pageSize(self): return self.document()._pageSize class TextDocument(QTextDocument): def __init__(self, parent=None): super().__init__(parent) self._pageSize = QPageSize.size(QPageSize.A4, QPageSize.Point) self._pageHeight = self._pageSize.height() self._pageWidth = self._pageSize.width() self.setDocumentMargin(30.5) def main(): import sys app = QApplication([]) if QApplication.instance() is None else QApplication.instance() m = MainGraphicsView() m.show() sys.exit(app.exec()) if __name__ == "__main__": main()