1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
# Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
from __future__ import annotations
from PySide6.QtWidgets import QComboBox
from PySide6.QtCore import Signal, Slot
from PySide6.QtPdfWidgets import QPdfView
ZOOM_LEVELS = ["Fit Width", "Fit Page", "12%", "25%", "33%", "50%", "66%",
"75%", "100%", "125%", "150%", "200%", "400%"]
class ZoomSelector(QComboBox):
zoomModeChanged = Signal(QPdfView.ZoomMode)
zoomFactorChanged = Signal(float)
def __init__(self, parent):
super().__init__(parent)
self.setEditable(True)
for z in ZOOM_LEVELS:
self.addItem(z)
self.currentTextChanged.connect(self.onCurrentTextChanged)
self.lineEdit().editingFinished.connect(self._editingFinished)
@Slot()
def _editingFinished(self):
self.onCurrentTextChanged(self.lineEdit().text())
@Slot(float)
def setZoomFactor(self, zoomFactor):
z = int(100 * zoomFactor)
self.setCurrentText(f"{z}%")
@Slot()
def reset(self):
self.setCurrentIndex(8) # 100%
@Slot(str)
def onCurrentTextChanged(self, text):
if text == "Fit Width":
self.zoomModeChanged.emit(QPdfView.ZoomMode.FitToWidth)
elif text == "Fit Page":
self.zoomModeChanged.emit(QPdfView.ZoomMode.FitInView)
else:
factor = 1.0
withoutPercent = text.replace('%', '')
zoomLevel = int(withoutPercent)
if zoomLevel:
factor = zoomLevel / 100.0
self.zoomModeChanged.emit(QPdfView.ZoomMode.Custom)
self.zoomFactorChanged.emit(factor)
|
