From bfd639fd99e6e77cb58b9649a7ddb1c03068ef2d Mon Sep 17 00:00:00 2001
From: Niels <niels.kummerfeldt@tu-harburg.de>
Date: Sat, 11 Sep 2010 09:36:56 +0200
Subject: [PATCH] add option to skip existing tiles while downloading; based on
 patch by Mikhail Peselnik

---
 downloadwidget.cpp | 23 +++++++++++++++++------
 downloadwidget.h   |  2 ++
 2 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/downloadwidget.cpp b/downloadwidget.cpp
index 7621670..837ada2 100644
--- a/downloadwidget.cpp
+++ b/downloadwidget.cpp
@@ -40,7 +40,8 @@ DownloadWidget::DownloadWidget(QWidget *parent)
     m_right(new QLabel("E 0", this)),
     m_bottom(new QLabel("N 0", this)),
     m_levelSpinBox(new QSpinBox(this)),
-    m_dlProgress(new QProgressBar(this))
+    m_dlProgress(new QProgressBar(this)),
+    m_skipExisting(new QCheckBox("S&kip already downloaded tiles", this))
 {
     QGridLayout *layout = new QGridLayout(this);
     layout->setContentsMargins(0, 0, 0, 0);
@@ -65,16 +66,19 @@ DownloadWidget::DownloadWidget(QWidget *parent)
     m_levelSpinBox->setRange(0, 18);
     layout->addWidget(m_levelSpinBox, 3, 2, 1, 2);
 
+    m_skipExisting->setChecked(false);
+    layout->addWidget(m_skipExisting, 4, 0, 1, 0);
+
     m_dlProgress->setFormat("%v / %m");
-    layout->addWidget(m_dlProgress, 4, 0, 1, 4);
+    layout->addWidget(m_dlProgress, 5, 0, 1, 4);
 
     QPushButton *start = new QPushButton("&Start", this);
     connect(start, SIGNAL(clicked()), this, SLOT(startDownload()));
-    layout->addWidget(start, 5, 0, 1, 2);
+    layout->addWidget(start, 6, 0, 1, 2);
 
     QPushButton *back = new QPushButton("&Back", this);
     connect(back, SIGNAL(clicked()), this, SIGNAL(back()));
-    layout->addWidget(back, 5, 2, 1, 2);
+    layout->addWidget(back, 6, 2, 1, 2);
 
     connect(m_manager, SIGNAL(finished(QNetworkReply*)),
             this, SLOT(replyFinished(QNetworkReply*)));
@@ -144,9 +148,16 @@ void DownloadWidget::replyFinished(QNetworkReply *reply)
                 file.write(data);
             }
         }
-        if (!m_dlList.isEmpty()) {
+        while (!m_dlList.isEmpty()) {
             QUrl url(m_dlList.takeFirst());
-            m_manager->get(QNetworkRequest(url));
+            if (QFile::exists(QDir::homePath()+"/Maps/OSM"+url.path()) &&
+                m_skipExisting->isChecked()) {	    	    
+                int n = m_dlProgress->value();
+                m_dlProgress->setValue(n+1);
+            } else {
+                m_manager->get(QNetworkRequest(url));
+                break;
+            }
         }
         int n = m_dlProgress->value();
         m_dlProgress->setValue(n+1);
diff --git a/downloadwidget.h b/downloadwidget.h
index 31c40f9..27460f6 100644
--- a/downloadwidget.h
+++ b/downloadwidget.h
@@ -20,6 +20,7 @@
 #ifndef DOWNLOADWIDGET_H
 #define DOWNLOADWIDGET_H
 
+#include <QtGui/QCheckBox>
 #include <QtGui/QLabel>
 #include <QtGui/QProgressBar>
 #include <QtGui/QSpinBox>
@@ -56,6 +57,7 @@ private:
     QLabel *m_up, *m_left, *m_right, *m_bottom;
     QSpinBox *m_levelSpinBox;
     QProgressBar *m_dlProgress;
+    QCheckBox *m_skipExisting;
 
 };