Mercurial Repositories > eric / file comparison
comparison: src/eric7/PdfViewer/PdfToCWidget.py
src/eric7/PdfViewer/PdfToCWidget.py
- branch
- pdf_viewer
- changeset 9702
- 7c973954919d
- child 9704
- 6e1650b9b3b5
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| 9700:b74a13a382a8 | 9702:7c973954919d |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2023 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing a Table of Contents viewer widget. | |
| 8 """ | |
| 9 | |
| 10 from PyQt6.QtCore import pyqtSignal, pyqtSlot, Qt, QModelIndex, QSortFilterProxyModel | |
| 11 from PyQt6.QtPdf import QPdfBookmarkModel, QPdfDocument | |
| 12 from PyQt6.QtWidgets import QWidget, QVBoxLayout, QLabel, QTreeView, QLineEdit | |
| 13 | |
| 14 | |
| 15 class PdfToCModel(QPdfBookmarkModel): | |
| 16 """ | |
| 17 Class implementing a TOC model with page numbers. | |
| 18 """ | |
| 19 | |
| 20 def __init__(self, parent): | |
| 21 """ | |
| 22 Constructor | |
| 23 | |
| 24 @param parent DESCRIPTION | |
| 25 @type TYPE | |
| 26 """ | |
| 27 super().__init__(parent) | |
| 28 | |
| 29 def columnCount(self, index): | |
| 30 """ | |
| 31 Public method to define the number of columns to be shown. | |
| 32 | |
| 33 @param index index of the element | |
| 34 @type QModelIndex | |
| 35 @return column count (always 2) | |
| 36 @rtype int | |
| 37 """ | |
| 38 return 2 | |
| 39 | |
| 40 def data(self, index, role): | |
| 41 """ | |
| 42 Public method to return the requested data. | |
| 43 | |
| 44 @param index index of the element | |
| 45 @type QModelIndex | |
| 46 @param role data role | |
| 47 @type Qt.ItemDataRole | |
| 48 @return requested data | |
| 49 @rtype Any | |
| 50 """ | |
| 51 if not index.isValid(): | |
| 52 return | |
| 53 | |
| 54 if index.column() == 1: | |
| 55 if role == Qt.ItemDataRole.DisplayRole: | |
| 56 page = index.data(QPdfBookmarkModel.Role.Page.value) | |
| 57 return self.document().pageLabel(page) | |
| 58 elif role == Qt.ItemDataRole.TextAlignmentRole: | |
| 59 return Qt.AlignmentFlag.AlignRight | |
| 60 | |
| 61 return super().data(index, role) | |
| 62 | |
| 63 | |
| 64 class PdfToCWidget(QWidget): | |
| 65 """ | |
| 66 Class implementing a Table of Contents viewer widget. | |
| 67 | |
| 68 @signal topicActivated(page, zoomFactor) emitted to navigate to the selected topic | |
| 69 """ | |
| 70 | |
| 71 topicActivated = pyqtSignal(int, float) | |
| 72 | |
| 73 def __init__(self, document, parent=None): | |
| 74 """ | |
| 75 Constructor | |
| 76 | |
| 77 @param document reference to the PDF document object | |
| 78 @type QPdfDocument | |
| 79 @param parent reference to the parent widget (defaults to None) | |
| 80 @type QWidget (optional) | |
| 81 """ | |
| 82 super().__init__(parent) | |
| 83 | |
| 84 self.__layout = QVBoxLayout(self) | |
| 85 | |
| 86 self.__header = QLabel("<h2>{0}</h2>".format(self.tr("Contents"))) | |
| 87 self.__header.setAlignment(Qt.AlignmentFlag.AlignCenter) | |
| 88 self.__layout.addWidget(self.__header) | |
| 89 | |
| 90 self.__searchEdit = QLineEdit(self) | |
| 91 self.__searchEdit.setPlaceholderText(self.tr("Search ...")) | |
| 92 self.__searchEdit.setClearButtonEnabled(True) | |
| 93 self.__layout.addWidget(self.__searchEdit) | |
| 94 | |
| 95 self.__tocWidget = QTreeView(self) | |
| 96 self.__tocWidget.setHeaderHidden(True) | |
| 97 self.__tocWidget.setExpandsOnDoubleClick(False) | |
| 98 self.__tocModel = PdfToCModel(self) | |
| 99 self.__tocModel.setDocument(document) | |
| 100 self.__tocFilterModel = QSortFilterProxyModel(self) | |
| 101 self.__tocFilterModel.setRecursiveFilteringEnabled(True) | |
| 102 self.__tocFilterModel.setSourceModel(self.__tocModel) | |
| 103 self.__tocWidget.setModel(self.__tocFilterModel) | |
| 104 self.__layout.addWidget(self.__tocWidget) | |
| 105 | |
| 106 self.setLayout(self.__layout) | |
| 107 | |
| 108 self.__tocWidget.activated.connect(self.__topicSelected) | |
| 109 document.statusChanged.connect(self.__handleDocumentStatus) | |
| 110 self.__searchEdit.textEdited.connect(self.__searchTextChanged) | |
| 111 | |
| 112 @pyqtSlot(QModelIndex) | |
| 113 def __topicSelected(self, index): | |
| 114 """ | |
| 115 Private slot to handle the selection of a ToC entry. | |
| 116 | |
| 117 @param index index of the activated entry | |
| 118 @type QModelIndex | |
| 119 """ | |
| 120 if not index.isValid(): | |
| 121 return | |
| 122 | |
| 123 page = index.data(QPdfBookmarkModel.Role.Page.value) | |
| 124 zoomFactor = index.data(QPdfBookmarkModel.Role.Zoom.value) | |
| 125 | |
| 126 self.topicActivated.emit(page, zoomFactor) | |
| 127 | |
| 128 @pyqtSlot(QPdfDocument.Status) | |
| 129 def __handleDocumentStatus(self, status): | |
| 130 """ | |
| 131 Private slot to handle a change of the document status. | |
| 132 | |
| 133 @param status document status | |
| 134 @type QPdfDocument.Status | |
| 135 """ | |
| 136 if status == QPdfDocument.Status.Ready: | |
| 137 self.__tocWidget.expandAll() | |
| 138 for column in range(self.__tocModel.columnCount(QModelIndex())): | |
| 139 self.__tocWidget.resizeColumnToContents(column) | |
| 140 | |
| 141 @pyqtSlot(str) | |
| 142 def __searchTextChanged(self, text): | |
| 143 """ | |
| 144 Private slot to handle a change of the search text. | |
| 145 | |
| 146 @param text search text | |
| 147 @type str | |
| 148 """ | |
| 149 self.__tocFilterModel.setFilterWildcard("*{0}*".format(text)) | |
| 150 self.__tocWidget.expandAll() |
