Adjust splitter when initially loading PDF Document

Closes: #4

After consideration, we don't want to change the size of the dialog
which is the only way to make it fit the PDF.

But the geometry is saved, so the user can resize and place it.

We did set the splitter to give more space to the PDF.

pdfView.py

@@ -1,7 +1,7 @@
 import math
 
-from PySide6.QtCore import QFile, QModelIndex, QPoint, Signal, Slot
+from PySide6.QtCore import QFile, QModelIndex, QPoint, QSize, Signal, Slot
-from PySide6.QtGui import QCloseEvent
+from PySide6.QtGui import QCloseEvent, QGuiApplication
 from PySide6.QtPdf import QPdfBookmarkModel, QPdfDocument
 from PySide6.QtPdfWidgets import QPdfView
 from PySide6.QtWidgets import QComboBox, QDialog, QMenuBar, QSpinBox, QWidget
@@ -118,16 +118,13 @@ class PDFViewer(QDialog, Ui_pdfViewer):
         return
 
     def closeEvent(self, event: QCloseEvent) -> None:
+        print("closeEvent")
         writeGeometry(self)
         super().closeEvent(event)
         return
 
     @Slot(QFile)  # type: ignore
     def open(self, file: QFile) -> None:
-        # assert file.exists()
-        # if not file.isOpen():
-        # file.open(QFile.OpenModeFlag.ReadOnly)
-        # self.document.load(file)
         self.document.load(file.fileName())
         document_title = self.document.metaData(
             QPdfDocument.MetaDataField.Title
@@ -135,6 +132,12 @@ class PDFViewer(QDialog, Ui_pdfViewer):
         self.setWindowTitle(document_title if document_title else "PDF Viewer")
         self.page_selected(0)
         self.pageSelector.setMaximum(self.document.pageCount() - 1)
+        if self.zoomSelector.currentIndex() == 8:
+            pageSize = self.document.pagePointSize(0)
+            dpi = QGuiApplication.primaryScreen().physicalDotsPerInch()
+            size = QSize(int(pageSize.width()/72*dpi),self.pdfView.height())
+            self.pdfView.resize(size)
+            self.splitter.setSizes([100, size.width()])
         return
 
     @Slot(QModelIndex)  # type: ignore