Mercurial Repositories > eric / file comparison
comparison: src/eric7/PdfViewer/PdfZoomSelector.py
src/eric7/PdfViewer/PdfZoomSelector.py
- branch
- pdf_viewer
- changeset 9699
- 92dcd34d54e4
- child 9700
- b74a13a382a8
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| 9698:69e183e4db6f | 9699:92dcd34d54e4 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2023 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing a widget to select a PDF zoom factor. | |
| 8 """ | |
| 9 | |
| 10 from PyQt6.QtCore import pyqtSignal, pyqtSlot, Qt | |
| 11 from PyQt6.QtPdfWidgets import QPdfView | |
| 12 from PyQt6.QtWidgets import QComboBox | |
| 13 | |
| 14 | |
| 15 class PdfZoomSelector(QComboBox): | |
| 16 """ | |
| 17 Class implementing a widget to select a PDF zoom factor. | |
| 18 | |
| 19 @signal zoomFactorChanged(factor) emitted to indicate the selected zoom factor | |
| 20 @signal zoomModeChanged(zoomMode) emitted to indicate the selected zoom mode | |
| 21 """ | |
| 22 zoomFactorChanged = pyqtSignal(float) | |
| 23 zoomModeChanged = pyqtSignal(QPdfView.ZoomMode) | |
| 24 | |
| 25 def __init__(self, parent=None): | |
| 26 """ | |
| 27 Constructor | |
| 28 | |
| 29 @param parent reference to the parent widget (defaults to None) | |
| 30 @type QWidget (optional) | |
| 31 """ | |
| 32 super().__init__(parent) | |
| 33 | |
| 34 self.setEditable(True) | |
| 35 self.setInsertPolicy(QComboBox.InsertPolicy.NoInsert) | |
| 36 | |
| 37 self.addItem(self.tr("Page Width")) | |
| 38 self.addItem(self.tr("Whole Page")) | |
| 39 self.addItem(self.tr("12%")) | |
| 40 self.addItem(self.tr("25%")) | |
| 41 self.addItem(self.tr("33%")) | |
| 42 self.addItem(self.tr("50%")) | |
| 43 self.addItem(self.tr("66%")) | |
| 44 self.addItem(self.tr("75%")) | |
| 45 self.addItem(self.tr("100%")) | |
| 46 self.addItem(self.tr("125%")) | |
| 47 self.addItem(self.tr("150%")) | |
| 48 self.addItem(self.tr("200%")) | |
| 49 self.addItem(self.tr("400%")) | |
| 50 self.addItem(self.tr("800%")) | |
| 51 self.addItem(self.tr("1600%")) | |
| 52 self.addItem(self.tr("2500%")) | |
| 53 self.addItem(self.tr("5000%")) | |
| 54 | |
| 55 self.lineEdit().setAlignment(Qt.AlignmentFlag.AlignCenter) | |
| 56 | |
| 57 self.currentTextChanged.connect(self.__processText) | |
| 58 self.lineEdit().editingFinished.connect(self.__editingFinished) | |
| 59 | |
| 60 @pyqtSlot() | |
| 61 def __editingFinished(self): | |
| 62 """ | |
| 63 Private slot handling the end of entering a zoom factor. | |
| 64 """ | |
| 65 self.__processText(self.lineEdit().text()) | |
| 66 | |
| 67 @pyqtSlot(str) | |
| 68 def __processText(self, text): | |
| 69 """ | |
| 70 Private slot to handle the change of the entered zoom factor. | |
| 71 | |
| 72 @param text text to be handled | |
| 73 @type str | |
| 74 """ | |
| 75 if text == self.tr("Page Width"): | |
| 76 self.zoomModeChanged.emit(QPdfView.ZoomMode.FitToWidth) | |
| 77 elif text == self.tr("Whole Page"): | |
| 78 self.zoomModeChanged.emit(QPdfView.ZoomMode.FitInView) | |
| 79 else: | |
| 80 withoutPercent = text.replace("%", "") | |
| 81 try: | |
| 82 zoomLevel = int(withoutPercent) | |
| 83 factor = zoomLevel / 100.0 | |
| 84 except ValueError: | |
| 85 factor = 1.0 | |
| 86 | |
| 87 self.zoomModeChanged.emit(QPdfView.ZoomMode.Custom) | |
| 88 self.zoomFactorChanged.emit(factor) | |
| 89 | |
| 90 @pyqtSlot() | |
| 91 def reset(self): | |
| 92 """ | |
| 93 Public slot to reset the zoom factor to 100%. | |
| 94 """ | |
| 95 self.setCurrentIndex(8) # index 8 is 100% | |
| 96 | |
| 97 @pyqtSlot(float) | |
| 98 def setZoomFactor(self, zoomFactor): | |
| 99 """ | |
| 100 Public slot to set the current zoom factor. | |
| 101 | |
| 102 @param zoomFactor current zoom factor | |
| 103 @type float | |
| 104 """ | |
| 105 self.setCurrentText(self.tr("{0}%").format(round(zoomFactor * 100))) |
