Fix important memory usage problem in log tab

src/executionlog.cpp

@@ -28,6 +28,8 @@
  * Contact : chris@qbittorrent.org
  */
 
+#include <QListWidgetItem>
+#include <QLabel>
 #include "executionlog.h"
 #include "ui_executionlog.h"
 #include "qbtsession.h"
@@ -40,9 +42,13 @@ ExecutionLog::ExecutionLog(QWidget *parent) :
     ui->setupUi(this);
     ui->tabConsole->setTabIcon(0, IconProvider::instance()->getIcon("view-calendar-journal"));
     ui->tabConsole->setTabIcon(1, IconProvider::instance()->getIcon("view-filter"));
-    ui->textConsole->setHtml(QBtSession::instance()->getConsoleMessages().join("<br>"));
+    const QStringList log_msgs = QBtSession::instance()->getConsoleMessages();
+    foreach(const QString& msg, log_msgs)
+      addLogMessage(msg);
+    const QStringList ban_msgs = QBtSession::instance()->getPeerBanMessages();
+    foreach(const QString& msg, ban_msgs)
+      addBanMessage(msg);
     connect(QBtSession::instance(), SIGNAL(newConsoleMessage(QString)), SLOT(addLogMessage(QString)));
-    ui->textBannedPeers->setHtml(QBtSession::instance()->getPeerBanMessages().join("<br>"));
     connect(QBtSession::instance(), SIGNAL(newBanMessage(QString)), SLOT(addBanMessage(QString)));
 }
 
@@ -53,10 +59,24 @@ ExecutionLog::~ExecutionLog()
 
 void ExecutionLog::addLogMessage(const QString &msg)
 {
-   ui->textConsole->setHtml(msg+ui->textConsole->toHtml());
+   QListWidgetItem *item = new QListWidgetItem;
+   QLabel *lbl = new QLabel(msg);
+   lbl->setContentsMargins(4, 2, 4, 2);
+   item->setSizeHint(lbl->sizeHint());
+   ui->logList->insertItem(0, item);
+   ui->logList->setItemWidget(item, lbl);
+   if(ui->logList->count() > MAX_LOG_MESSAGES)
+     delete ui->logList->takeItem(ui->logList->count()-1);
 }
 
 void ExecutionLog::addBanMessage(const QString &msg)
 {
-   ui->textBannedPeers->setHtml(msg+ui->textBannedPeers->toHtml());
+  QListWidgetItem *item = new QListWidgetItem;
+  QLabel *lbl = new QLabel(msg);
+  lbl->setContentsMargins(4, 2, 4, 2);
+  item->setSizeHint(lbl->sizeHint());
+  ui->banList->insertItem(0, item);
+  ui->banList->setItemWidget(item, lbl);
+  if(ui->banList->count() > MAX_LOG_MESSAGES)
+    delete ui->banList->takeItem(ui->banList->count()-1);
 }

src/executionlog.ui

@@ -28,7 +28,11 @@
       </attribute>
       <layout class="QVBoxLayout">
        <item>
-        <widget class="QTextBrowser" name="textConsole"/>
+        <widget class="QListWidget" name="logList">
+         <property name="alternatingRowColors">
+          <bool>true</bool>
+         </property>
+        </widget>
        </item>
       </layout>
      </widget>
@@ -38,7 +42,11 @@
       </attribute>
       <layout class="QVBoxLayout" name="_2">
        <item>
-        <widget class="QTextBrowser" name="textBannedPeers"/>
+        <widget class="QListWidget" name="banList">
+         <property name="alternatingRowColors">
+          <bool>true</bool>
+         </property>
+        </widget>
        </item>
       </layout>
      </widget>

src/qtlibtorrent/qbtsession.cpp

@@ -1692,25 +1692,25 @@ void QBtSession::addConsoleMessage(QString msg, QString) {
   emit newConsoleMessage(QDateTime::currentDateTime().toString("dd/MM/yyyy hh:mm:ss") + " - " + msg);
 #else
 void QBtSession::addConsoleMessage(QString msg, QColor color) {
-  if(consoleMessages.size() > 100) {
+  if(consoleMessages.size() > MAX_LOG_MESSAGES) {
-    consoleMessages.removeLast();
+    consoleMessages.removeFirst();
   }
   msg = "<font color='grey'>"+ QDateTime::currentDateTime().toString(QString::fromUtf8("dd/MM/yyyy hh:mm:ss")) + "</font> - <font color='" + color.name() + "'><i>" + msg + "</i></font>";
-  consoleMessages.prepend(msg);
+  consoleMessages.append(msg);
   emit newConsoleMessage(msg);
 #endif
 }
 
 void QBtSession::addPeerBanMessage(QString ip, bool from_ipfilter) {
-  if(peerBanMessages.size() > 100) {
+  if(peerBanMessages.size() > MAX_LOG_MESSAGES) {
-    peerBanMessages.removeLast();
+    peerBanMessages.removeFirst();
   }
   QString msg;
   if(from_ipfilter)
     msg = "<font color='grey'>" + QDateTime::currentDateTime().toString(QString::fromUtf8("dd/MM/yyyy hh:mm:ss")) + "</font> - " + tr("<font color='red'>%1</font> <i>was blocked due to your IP filter</i>", "x.y.z.w was blocked").arg(ip);
   else
     msg = "<font color='grey'>" + QDateTime::currentDateTime().toString(QString::fromUtf8("dd/MM/yyyy hh:mm:ss")) + "</font> - " + tr("<font color='red'>%1</font> <i>was banned due to corrupt pieces</i>", "x.y.z.w was banned").arg(ip);
-  peerBanMessages.prepend(msg);
+  peerBanMessages.append(msg);
   emit newBanMessage(msg);
 }
 

src/qtlibtorrent/qbtsession.h

@@ -60,6 +60,8 @@ class ScanFoldersModel;
 class TorrentSpeedMonitor;
 class DNSUpdater;
 
+const int MAX_LOG_MESSAGES = 100;
+
 class QBtSession : public QObject {
   Q_OBJECT
   Q_DISABLE_COPY(QBtSession)