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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
from __future__ import annotations
from PySide6.QtPdfWidgets import QPdfView
from PySide6.QtWidgets import QComboBox
from PySide6.QtCore import Signal, Slot
class ZoomSelector(QComboBox):
zoom_mode_changed = Signal(QPdfView.ZoomMode)
zoom_factor_changed = Signal(float)
def __init__(self, parent):
super().__init__(parent)
self.setEditable(True)
self.addItem("Fit Width")
self.addItem("Fit Page")
self.addItem("12%")
self.addItem("25%")
self.addItem("33%")
self.addItem("50%")
self.addItem("66%")
self.addItem("75%")
self.addItem("100%")
self.addItem("125%")
self.addItem("150%")
self.addItem("200%")
self.addItem("400%")
self.currentTextChanged.connect(self.on_current_text_changed)
self.lineEdit().editingFinished.connect(self._editing_finished)
@Slot(float)
def set_zoom_factor(self, zoomFactor):
percent = int(zoomFactor * 100)
self.setCurrentText(f"{percent}%")
@Slot()
def reset(self):
self.setCurrentIndex(8) # 100%
@Slot(str)
def on_current_text_changed(self, text):
if text == "Fit Width":
self.zoom_mode_changed.emit(QPdfView.ZoomMode.FitToWidth)
elif text == "Fit Page":
self.zoom_mode_changed.emit(QPdfView.ZoomMode.FitInView)
elif text.endswith("%"):
factor = 1.0
zoom_level = int(text[:-1])
factor = zoom_level / 100.0
self.zoom_mode_changed.emit(QPdfView.ZoomMode.Custom)
self.zoom_factor_changed.emit(factor)
@Slot()
def _editing_finished(self):
self.on_current_text_changed(self.lineEdit().text())
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