From 76cc3392158eb9f4f421485d821b128880c4ce65 Mon Sep 17 00:00:00 2001
From: Matthias Hoelzer-Kluepfel <hoelzer@kde.org>
Date: Wed, 17 May 2000 08:50:57 +0000
Subject: [PATCH] Document closing implemented.

svn path=/trunk/kdegraphics/kdvi/; revision=49776
---
 dviwin.cpp         |  5 ++++-
 kdvi_multipage.cpp | 24 ++++++++++++++++++++----
 kdvi_multipage.h   |  3 +++
 3 files changed, 27 insertions(+), 5 deletions(-)

diff --git a/dviwin.cpp b/dviwin.cpp
index dcbb613ea..bcb8728c9 100644
--- a/dviwin.cpp
+++ b/dviwin.cpp
@@ -288,7 +288,10 @@ void dviWindow::drawPage()
 {
   psp_interrupt();
   if (filename.isEmpty())	// must call setFile first
-    return;
+    {
+      resize(0, 0);
+      return;
+    }
   if (!dvi_name) {			//  dvi file not initialized yet
     QApplication::setOverrideCursor( waitCursor );
     dvi_name = const_cast<char*>(filename.ascii());
diff --git a/kdvi_multipage.cpp b/kdvi_multipage.cpp
index ba418e56a..69f49e971 100644
--- a/kdvi_multipage.cpp
+++ b/kdvi_multipage.cpp
@@ -57,7 +57,7 @@ KInstance *KDVIMultiPageFactory::instance()
 
 
 KDVIMultiPage::KDVIMultiPage(QWidget *parent, const char *name)
-  : KMultiPage(parent, name)
+  : KMultiPage(parent, name), window(0)
 {
   setInstance(KDVIMultiPageFactory::instance()); 
 
@@ -83,6 +83,15 @@ bool KDVIMultiPage::openFile()
 }
 
 
+bool KDVIMultiPage::closeURL()
+{
+  window->setFile("");
+  scrollView()->resizeContents(0, 0);
+
+  return true;
+}
+
+
 // test code
 QStringList KDVIMultiPage::fileFormats()
 {
@@ -94,7 +103,7 @@ QStringList KDVIMultiPage::fileFormats()
 
 bool KDVIMultiPage::gotoPage(int page)
 {
-  window->gotoPage(page);
+  window->gotoPage(page+1);
   return true;
 }
 
@@ -128,10 +137,17 @@ void KDVIMultiPage::setPaperSize(double w, double h)
 
 bool KDVIMultiPage::preview(QPainter *p, int w, int h)
 {
-  if (!window->pix())
+  QPixmap *map = window->pix();
+
+  if (!map)
     return false;
 
-  p->drawImage(0, 0, window->pix()->convertToImage().smoothScale(w,h));
+  
+  // TODO: use higher quality preview if anti-aliasing?
+  //p->drawImage(0, 0, window->pix()->convertToImage().smoothScale(w,h));
+
+  p->scale((double)w/(double)map->width(), (double)h/(double)map->height());
+  p->drawPixmap(0, 0, *map);
 
   return true;
 }
diff --git a/kdvi_multipage.h b/kdvi_multipage.h
index 59333b1bc..e9c9bac52 100644
--- a/kdvi_multipage.h
+++ b/kdvi_multipage.h
@@ -60,6 +60,9 @@ public:
   /// opens a file
   virtual bool openFile(); 
 
+  /// close a file
+  virtual bool closeURL();
+
   /// displays the given page
   virtual bool gotoPage(int page);