Changes the UI interface so that only the current page is rendered on screen at a time. This has significant memory benefits for large PDF files. This also implements a least-recently used cache of tunable size, which improves responsiveness if you're hopping between two specific pages.

1 files changed, 19 insertions, 16 deletions

diff --git a/src-qt5/desktop-utils/lumina-pdf/PropDialog.cpp b/src-qt5/desktop-utils/lumina-pdf/PropDialog.cpp
index a7a67f03..7f82a8c8 100644
--- a/src-qt5/desktop-utils/lumina-pdf/PropDialog.cpp
+++ b/src-qt5/desktop-utils/lumina-pdf/PropDialog.cpp
@@ -9,14 +9,15 @@
 #include "ui_PropDialog.h"
 #include <LuminaXDG.h>
 
-PropDialog::PropDialog(Renderer *Backend) : QDialog(), ui(new Ui::PropDialog()), BACKEND(Backend){
+PropDialog::PropDialog(Renderer *Backend)
+    : QDialog(), ui(new Ui::PropDialog()), BACKEND(Backend) {
   ui->setupUi(this);
   this->setWindowTitle(tr("PDF Information"));
-  this->setWindowIcon( LXDG::findIcon("dialog-information","unknown"));
+  this->setWindowIcon(LXDG::findIcon("dialog-information", "unknown"));
 
-  connect(ui->closeButton, SIGNAL(clicked()), this, SLOT(close()));
+  QObject::connect(ui->closeButton, SIGNAL(clicked()), this, SLOT(close()));
 
-  //Setup translations
+  // Setup translations
   ui->titleL->setText(tr("Title:"));
   ui->subjectL->setText(tr("Subject:"));
   ui->authorL->setText(tr("Author:"));
@@ -29,21 +30,23 @@ PropDialog::PropDialog(Renderer *Backend) : QDialog(), ui(new Ui::PropDialog()),
   ui->closeButton->setText(tr("Close"));
 }
 
-//Load size from mainUI after pages have loaded
+// Load size from mainUI after pages have loaded
 void PropDialog::setSize(QSizeF pageSize) {
-  ui->sizeL->setText(tr("Page Size: ") + QString::number(pageSize.width())+", "+QString::number(pageSize.height()));
+  ui->sizeL->setText(tr("Page Size: ") + QString::number(pageSize.width()) +
+                     ", " + QString::number(pageSize.height()));
 }
 
-//Fill the text boxes with information from the document
+// Fill the text boxes with information from the document
 void PropDialog::setInformation() {
   QJsonObject info = BACKEND->properties();
-  ui->titleE->setText( info.value("title").toString() );
-  ui->subjectE->setText( info.value("subject").toString() );
-  ui->authorE->setText( info.value("author").toString() );
-  ui->creatorE->setText( info.value("creator").toString() );
-  ui->producerE->setText( info.value("producer").toString() );
-  ui->keywordE->setText( info.value("keywords").toString() );
-  ui->createdEntry->setText( info.value("dt_created").toString() );
-  ui->modifiedEntry->setText( info.value("dt_modified").toString() );
-  ui->numberL->setText( tr("Number of Pages: ") + QString::number(BACKEND->numPages()) );
+  ui->titleE->setText(info.value("title").toString());
+  ui->subjectE->setText(info.value("subject").toString());
+  ui->authorE->setText(info.value("author").toString());
+  ui->creatorE->setText(info.value("creator").toString());
+  ui->producerE->setText(info.value("producer").toString());
+  ui->keywordE->setText(info.value("keywords").toString());
+  ui->createdEntry->setText(info.value("dt_created").toString());
+  ui->modifiedEntry->setText(info.value("dt_modified").toString());
+  ui->numberL->setText(tr("Number of Pages: ") +
+                       QString::number(BACKEND->numPages()));
 }