added RsAutoUpdatePage and converted PeersDialog and Transfers Dialog to this, to reduce CPU usage.

git-svn-id: http://svn.code.sf.net/p/retroshare/code/branches/v0.4.x@1834 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/RetroShare.pro

@@ -145,6 +145,7 @@ HEADERS +=  rshare.h \
             gui/HelpDialog.h \
             gui/LogoBar.h \
             gui/xprogressbar.h \
+			gui/RsAutoUpdatePage.h \
             gui/plugins/PluginInterface.h \
             gui/im_history/IMHistoryKeeper.h           \
             gui/im_history/IMHistoryReader.h           \
@@ -359,6 +360,7 @@ SOURCES +=  main.cpp \
             gui/StatisticDialog.cpp \
             gui/MessagesDialog.cpp \
             gui/MessagesPopupDialog.cpp \
+			gui/RsAutoUpdatePage.cpp \
             gui/im_history/IMHistoryKeeper.cpp        \
             gui/im_history/IMHistoryReader.cpp        \
             gui/im_history/IMHistoryItem.cpp          \

retroshare-gui/src/gui/PeersDialog.cpp

@@ -35,6 +35,7 @@
 #include "msgs/ChanMsgDialog.h"
 #include "connect/ConfCertDialog.h"
 #include "profile/ProfileView.h"
+#include "RsAutoUpdatePage.h"
 
 
 #include "gui/Preferences/rsharesettings.h"
@@ -82,7 +83,7 @@
 
 /** Constructor */
 PeersDialog::PeersDialog(QWidget *parent)
-            : MainPage(parent),
+            : RsAutoUpdatePage(1000,parent),
               historyKeeper(Rshare::dataDirectory() + "/his1.xml")
 {
   /* Invoke the Qt Designer generated object setup routine */
@@ -221,14 +222,14 @@ void PeersDialog::peertreeWidgetCostumPopupMenu( QPoint point )
       contextMnu.exec( mevent->globalPos() );
 }
 
-
+void PeersDialog::updateDisplay()
+{
+	insertPeers() ;
+}
 
 /* get the list of peers from the RsIface.  */
 void  PeersDialog::insertPeers()
 {
-	if(!isVisible())
-		return ;
-
 	std::list<std::string> peers;
 	std::list<std::string>::iterator it;
 

retroshare-gui/src/gui/PeersDialog.h

@@ -26,7 +26,7 @@
 
 #include "chat/PopupChatDialog.h"
 
-#include "mainpage.h"
+#include "RsAutoUpdatePage.h"
 #include "ui_PeersDialog.h"
 
 #include "im_history/IMHistoryKeeper.h"
@@ -37,7 +37,7 @@ class QTextEdit;
 class QTextCharFormat;
 class ChatDialog;
 
-class PeersDialog : public MainPage 
+class PeersDialog : public RsAutoUpdatePage 
 {
   Q_OBJECT
 
@@ -52,6 +52,7 @@ public:
   void loadEmoticonsgroupchat();
 //  void setChatDialog(ChatDialog *cd);
 
+  virtual void updateDisplay() ;
 public slots:
 
   void  insertPeers();

retroshare-gui/src/gui/RsAutoUpdatePage.cpp

@@ -0,0 +1,31 @@
+#include <iostream>
+#include <QTimer>
+#include "RsAutoUpdatePage.h"
+
+RsAutoUpdatePage::RsAutoUpdatePage(int ms_update_period,QWidget *parent)
+	: MainPage(parent)
+{
+	_timer = new QTimer ;
+
+	QObject::connect(_timer,SIGNAL(timeout()),this,SLOT(timerUpdate())) ;
+
+	_timer->start(ms_update_period) ;
+}
+
+void RsAutoUpdatePage::showEvent(QShowEvent *event)
+{
+	std::cout << "In show event !!" << std::endl ;
+	updateDisplay();
+}
+
+void RsAutoUpdatePage::timerUpdate()
+{
+	// only update when the widget is visible.
+	//
+	if(!isVisible())
+		return ;
+
+	updateDisplay() ;
+	update() ;				// Qt flush
+}
+

retroshare-gui/src/gui/RsAutoUpdatePage.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <QApplication>
+#include <QWidget>
+#include "mainpage.h"
+
+// This class implement a basic RS functionality which is that widgets displayign info
+// should update regularly. They also should update only when visible, to save CPU time.
+//
+// Using this class simply needs to derive your widget from RsAutoUpdatePage
+// and oveload the update() function with the actual code that updates the
+// widget.
+//
+class QTimer ;
+
+class RsAutoUpdatePage: public MainPage
+{
+	Q_OBJECT
+
+	public:
+		RsAutoUpdatePage(int ms_update_period = 1000,QWidget *parent=NULL) ;
+
+		virtual void updateDisplay() {}
+
+	protected:
+		virtual void showEvent(QShowEvent *e) ;
+
+	private slots:
+		void timerUpdate() ;
+
+	private:
+		QTimer *_timer ;
+};

retroshare-gui/src/gui/TransfersDialog.cpp

@@ -47,7 +47,7 @@
 
 /** Constructor */
 TransfersDialog::TransfersDialog(QWidget *parent)
-: MainPage(parent)
+: RsAutoUpdatePage(1000,parent)
 {
     /* Invoke the Qt Designer generated object setup routine */
     ui.setupUi(this);
@@ -381,12 +381,13 @@ void TransfersDialog::editItem(int row, int column, QVariant data)
 	}
 }
 
+void TransfersDialog::updateDisplay()
+{
+	insertTransfers();
+}
 	/* get the list of Transfers from the RsIface.  **/
 void TransfersDialog::insertTransfers()
 {
-	if(!isVisible())
-		return ;
-
 	QString symbol, name, sources, status, coreId;
 	qlonglong fileSize, completed, remaining;
 	double progress, dlspeed; 

retroshare-gui/src/gui/TransfersDialog.h

@@ -29,7 +29,7 @@
 #include <QModelIndex>
 #include <QVariant>
 
-#include "mainpage.h"
+#include "RsAutoUpdatePage.h"
 #include "ui_TransfersDialog.h"
 
 
@@ -37,7 +37,7 @@ class DLListDelegate;
 class ULListDelegate;
 class QStandardItemModel;
 
-class TransfersDialog : public MainPage
+class TransfersDialog : public RsAutoUpdatePage
 {
 	Q_OBJECT
 
@@ -49,6 +49,7 @@ class TransfersDialog : public MainPage
 		
 		virtual void keyPressEvent(QKeyEvent *) ;
 
+		virtual void updateDisplay() ;
 	public slots:
 		void insertTransfers();
 

retroshare-gui/src/rsiface/notifyqt.cpp

@@ -165,17 +165,6 @@ void NotifyQt::UpdateGUI()
 
 //	std::cerr << "Got update signal t=" << lastTs << std::endl ;
 
-	if (time(NULL) > lastTs)					// always update, every 1 sec.
-	{
-		emit transfersChanged();
-		emit friendsChanged() ;
-	}
-
-	if (time(NULL) > lastTs + 5)				// update every 5 seconds. I don't know what to do with these.
-	{
-//		displayChannels();
-	}
-
 	lastTs = time(NULL) ;
 
 	static bool already_updated = false ;	// these only update once at start because they may already have been set before