Use a shared printer

2 files changed, 21 insertions, 8 deletions

diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 2de4853..1eb136e 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -48,12 +48,15 @@ class MainWindow::MainWindowPrivate
 {
 public:
 	MainWindowPrivate()
-	{}
+        : printer(0)
+    {}
 
 	QDockWidget *itemPropsDock;
 	QStackedWidget *propertyEditorsStack;
 	QMap<QString, int> propertyEditorsIndexes;
 
+    QPrinter *printer;
+
     QAction *printAction;
     QAction *printPreviewAction;
 
@@ -513,25 +516,33 @@ MainWindow::exportDocument()
 }
 
 void
+MainWindow::initPrinter()
+{
+    if (!d->printer)
+        d->printer = new QPrinter();
+}
+
+void
 MainWindow::print()
 {
-    QPrinter printer;
-    QPrintDialog printDialog(&printer, this);
+    initPrinter();
+    QPrintDialog printDialog(d->printer, this);
     if (printDialog.exec() == QDialog::Accepted) {
-        paintOnPrinter(&printer);
+        printPreview(d->printer);
     }
 }
 
 void
 MainWindow::printPreview()
 {
-    QPrintPreviewDialog printPreviewDialog(this);
-    connect(&printPreviewDialog, SIGNAL(paintRequested(QPrinter*)), SLOT(paintOnPrinter(QPrinter*)));
+    QPrintPreviewDialog printPreviewDialog(d->printer, this);
+    connect(&printPreviewDialog, SIGNAL(paintRequested(QPrinter*)),
+                                 SLOT(printPreview(QPrinter*)));
     printPreviewDialog.exec();
 }
 
 void
-MainWindow::paintOnPrinter(QPrinter *printer)
+MainWindow::printPreview(QPrinter *printer)
 {
     QPainter painter(printer);
     m_model->setPrinting(true);
diff --git a/src/mainwindow.h b/src/mainwindow.h
index 6c1a094..7a77b8e 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -57,7 +57,7 @@ public slots:
 	void exportDocument();
 	void print();
 	void printPreview();
-	void paintOnPrinter(QPrinter *);
+	void printPreview(QPrinter *);
 	void setViewScale(const QString &scale);
 	void about();
 
@@ -96,6 +96,8 @@ private:
 	class MainWindowPrivate;
 	MainWindowPrivate *const d;
 
+    void initPrinter();
+
 	DiagramView *m_view;
 	DiagramDocument *m_model;