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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
# Copyright (C) 2023 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
from __future__ import annotations
from math import sqrt
from PySide6.QtWidgets import (QListView, QTreeView)
from PySide6.QtGui import QIcon, QKeySequence, QPainter
from PySide6.QtCore import (QDir, QIODevice, QModelIndex,
QPointF, Slot)
from PySide6.QtPrintSupport import QPrinter
from PySide6.QtPdf import QPdfDocument, QPdfBookmarkModel
from PySide6.QtPdfWidgets import QPdfView, QPdfPageSelector
from abstractviewer import AbstractViewer
from pdfviewer.zoomselector import ZoomSelector
ZOOM_MULTIPLIER = sqrt(2.0)
class PdfViewer(AbstractViewer):
def __init__(self):
super().__init__()
self.uiInitialized.connect(self.initPdfViewer)
self._toolBar = None
self._zoomSelector = None
self._pageSelector = None
self._document = None
self._pdfView = None
self._actionForward = None
self._actionBack = None
self._bookmarks = None
self._pages = None
def init(self, file, parent, mainWindow):
self._pdfView = QPdfView(parent)
super().init(file, self._pdfView, mainWindow)
self._document = QPdfDocument(self)
def supportedMimeTypes(self):
return ["application/pdf"]
def initPdfViewer(self):
self._toolBar = self.addToolBar("PDF")
self._zoomSelector = ZoomSelector(self._toolBar)
nav = self._pdfView.pageNavigator()
self._pageSelector = QPdfPageSelector(self._toolBar)
self._toolBar.insertWidget(self._uiAssets_forward, self._pageSelector)
self._pageSelector.setDocument(self._document)
self._pageSelector.currentPageChanged.connect(self.pageSelected)
nav.currentPageChanged.connect(self._pageSelector.setCurrentPage)
nav.backAvailableChanged.connect(self._uiAssets_back.setEnabled)
self._actionBack = self._uiAssets_back
self._actionForward = self._uiAssets_forward
self._uiAssets_back.triggered.connect(self.onActionBackTriggered)
self._uiAssets_forward.triggered.connect(self.onActionForwardTriggered)
self._toolBar.addSeparator()
self._toolBar.addWidget(self._zoomSelector)
icon = QIcon.fromTheme(QIcon.ThemeIcon.ZoomIn,
QIcon(":/demos/documentviewer/images/zoom-in.png"))
actionZoomIn = self._toolBar.addAction(icon, "Zoom in", QKeySequence.StandardKey.ZoomIn)
actionZoomIn.setToolTip("Increase zoom level")
actionZoomIn.triggered.connect(self.onActionZoomInTriggered)
icon = QIcon.fromTheme(QIcon.ThemeIcon.ZoomOut,
QIcon(":/demos/documentviewer/images/zoom-out.png"))
actionZoomOut = self._toolBar.addAction(icon, "Zoom out", QKeySequence.StandardKey.ZoomOut)
actionZoomOut.setToolTip("Decrease zoom level")
actionZoomOut.triggered.connect(self.onActionZoomOutTriggered)
nav.backAvailableChanged.connect(self._actionBack.setEnabled)
nav.forwardAvailableChanged.connect(self._actionForward.setEnabled)
self._zoomSelector.zoomModeChanged.connect(self._pdfView.setZoomMode)
self._zoomSelector.zoomFactorChanged.connect(self._pdfView.setZoomFactor)
self._zoomSelector.reset()
bookmarkModel = QPdfBookmarkModel(self)
bookmarkModel.setDocument(self._document)
self._uiAssets_tabs.clear()
self._bookmarks = QTreeView(self._uiAssets_tabs)
self._bookmarks.activated.connect(self.bookmarkSelected)
self._bookmarks.setModel(bookmarkModel)
self._pdfView.setDocument(self._document)
self._pdfView.setPageMode(QPdfView.PageMode.MultiPage)
self.openPdfFile()
if not self._document.pageCount():
return
self._pages = QListView(self._uiAssets_tabs)
self._pages.setModel(self._document.pageModel())
self._pages.selectionModel().currentRowChanged.connect(self._currentRowChanged)
self._pdfView.pageNavigator().currentPageChanged.connect(self._pageChanged)
self._uiAssets_tabs.addTab(self._pages, "Pages")
self._uiAssets_tabs.addTab(self._bookmarks, "Bookmarks")
def viewerName(self):
return "PdfViewer"
@Slot(QModelIndex, QModelIndex)
def _currentRowChanged(self, current, previous):
if previous == current:
return
nav = self._pdfView.pageNavigator()
row = current.row()
if nav.currentPage() == row:
return
nav.jump(row, QPointF(), nav.currentZoom())
@Slot(int)
def _pageChanged(self, page):
if self._pages.currentIndex().row() == page:
return
self._pages.setCurrentIndex(self._pages.model().index(page, 0))
@Slot()
def openPdfFile(self):
self.disablePrinting()
if self._file.open(QIODevice.OpenModeFlag.ReadOnly):
self._document.load(self._file)
documentTitle = self._document.metaData(QPdfDocument.MetaDataField.Title)
if not documentTitle:
documentTitle = "PDF Viewer"
self.statusMessage(documentTitle)
self.pageSelected(0)
file_name = QDir.toNativeSeparators(self._file.fileName())
self.statusMessage(f"Opened PDF file {file_name}")
self.maybeEnablePrinting()
def hasContent(self):
return self._document if self._document.pageCount() > 0 else False
def supportsOverview(self):
return True
def printDocument(self, printer):
if not self.hasContent():
return
painter = QPainter()
painter.begin(printer)
pageRect = printer.pageRect(QPrinter.Unit.DevicePixel).toRect()
pageSize = pageRect.size()
for i in range(0, self._document.pageCount()):
if i > 0:
printer.newPage()
page = self._document.render(i, pageSize)
painter.drawImage(pageRect, page)
painter.end()
@Slot(QModelIndex)
def bookmarkSelected(self, index):
if not index.isValid():
return
page = index.data(int(QPdfBookmarkModel.Role.Page))
zoomLevel = index.data(int(QPdfBookmarkModel.Role.Level)).toReal()
self._pdfView.pageNavigator().jump(page, QPointF(), zoomLevel)
@Slot(int)
def pageSelected(self, page):
nav = self._pdfView.pageNavigator()
nav.jump(page, QPointF(), nav.currentZoom())
@Slot()
def onActionZoomInTriggered(self):
self._pdfView.setZoomFactor(self._pdfView.zoomFactor() * ZOOM_MULTIPLIER)
@Slot()
def onActionZoomOutTriggered(self):
self._pdfView.setZoomFactor(self._pdfView.zoomFactor() / ZOOM_MULTIPLIER)
@Slot()
def onActionPreviousPageTriggered(self):
nav = self._pdfView.pageNavigator()
nav.jump(nav.currentPage() - 1, QPointF(), nav.currentZoom())
@Slot()
def onActionNextPageTriggered(self):
nav = self._pdfView.pageNavigator()
nav.jump(nav.currentPage() + 1, QPointF(), nav.currentZoom())
@Slot()
def onActionBackTriggered(self):
self._pdfView.pageNavigator().back()
@Slot()
def onActionForwardTriggered(self):
self._pdfView.pageNavigator().forward()
|
