From 67fd5c9acf2cce4864e1628d0e040cd404dc749c Mon Sep 17 00:00:00 2001
From: =?utf8?q?Juan=20Gonz=C3=A1lez?= <kde-devel@opsiland.info>
Date: Mon, 14 Jan 2008 18:37:29 +0100
Subject: [PATCH] added a fancy animation to the login failure notification

---
 RFIDLoginManager/loginmanager.cpp | 42 ++++++++++++++++++++++++++++++++++-----
 RFIDLoginManager/loginmanager.h   |  5 +++++
 2 files changed, 42 insertions(+), 5 deletions(-)

diff --git a/RFIDLoginManager/loginmanager.cpp b/RFIDLoginManager/loginmanager.cpp
index 1a852d3..5c08418 100644
--- a/RFIDLoginManager/loginmanager.cpp
+++ b/RFIDLoginManager/loginmanager.cpp
@@ -23,6 +23,7 @@
 #include <QSize>
 #include <QSettings>
 #include <QProcess>
+#include <QTimeLine>
 
 #include <security/pam_misc.h>
 #include <security/pam_appl.h>
@@ -55,13 +56,15 @@ extern "C" int Conversation(int num_msg, const pam_message **msg,
 	return PAM_SUCCESS;
 }
 static struct pam_conv pam_conv = { Conversation, NULL };
+
 LoginManager::LoginManager ( QWidget* parent, Qt::WFlags fl )
 	: QWidget ( parent, fl ), 
 	    Ui::Form(),
 	    backgroundItem(new QGraphicsPixmapItem()),
 	    text(new QGraphicsTextItem(backgroundItem)),
 	    failureNotification((new QGraphicsTextItem(backgroundItem))),
-	    settings(new QSettings("opsiland","RFIDUserManager",this))
+	    settings(new QSettings("opsiland","RFIDUserManager",this)),
+	    loginFailureAnimation(new QTimeLine(2000,this))
 {
 	setupUi ( this );
 	//TODO Make the serial port configurable from the manager...
@@ -82,6 +85,9 @@ LoginManager::LoginManager ( QWidget* parent, Qt::WFlags fl )
 	failureNotification->setDefaultTextColor(QColor::fromRgb(255,0,0,200));
 	failureNotification->setPlainText("Login failed");
 	failureNotification->setVisible(false);
+
+	QObject::connect(loginFailureAnimation,SIGNAL(frameChanged( int )),this,SLOT(slotAnimateLoginFailure(int)));
+	QObject::connect(loginFailureAnimation,SIGNAL(finished()),this,SLOT(slotHideFailure()));
 	
 	QObject::connect(&control,SIGNAL(readPublicModeDone(int, const QString&, const QString&)),this,SLOT(slotReadPublicModeDone(int, const QString&, const QString&)));
 	control.readPublicModeA();
@@ -102,9 +108,11 @@ void LoginManager::resizeEvent(QResizeEvent * event)
 	passwordItem->setPos((size.width()-passItemBounds.width())/2,2*text->boundingRect().height());
 	
 	text->setPos((size.width()-text->boundingRect().width())/2,0);
-	failureNotification->setPos((size.width()-failureNotification->boundingRect().width())/2,2*text->boundingRect().height()+passwordItem->boundingRect().height());
+	failureNotification->setPos(-failureNotification->boundingRect().width()/*(size.width()-failureNotification->boundingRect().width())/2*/,2*text->boundingRect().height()+passwordItem->boundingRect().height());
 	
 	g->setSceneRect(0,0,size.width(),size.height());
+
+	loginFailureAnimation->setFrameRange((int)-failureNotification->boundingRect().width(),(int)(size.width()-failureNotification->boundingRect().width())/2);
 }
 
 void LoginManager::setBackgroundImage(const QString & filePath)
@@ -129,21 +137,30 @@ void LoginManager::keyPressEvent(QKeyEvent * event)
 				}
 				passwordItem->setPasswordLength(0);
 				currentPassword="";
-				failureNotification->setVisible(false);
+				loginFailureAnimation->setDirection(QTimeLine::Backward);
+				if (loginFailureAnimation->state()!=QTimeLine::Running && failureNotification->isVisible()) {
+					loginFailureAnimation->start();
+				}
 				break;
 			case Qt::Key_Backspace:
 				passwordItem->setPasswordLength(passwordItem->passwordLength()-1);
 				if (currentPassword.length()>0) {
 					currentPassword.remove(currentPassword.length()-1,1);
 				}
-				failureNotification->setVisible(false);
+				loginFailureAnimation->setDirection(QTimeLine::Backward);
+				if (loginFailureAnimation->state()!=QTimeLine::Running && failureNotification->isVisible()) {
+					loginFailureAnimation->start();
+				}
 				break;
 			default:
 				QString text = event->text();
 				if (!text.isEmpty()) {
 					passwordItem->setPasswordLength(passwordItem->passwordLength()+1);
 					currentPassword.append(text);
-					failureNotification->setVisible(false);
+					loginFailureAnimation->setDirection(QTimeLine::Backward);
+					if (loginFailureAnimation->state()!=QTimeLine::Running && failureNotification->isVisible()) {
+						loginFailureAnimation->start();
+					}
 				}
 		}		
 		QRectF passItemBounds = passwordItem->boundingRect();
@@ -202,6 +219,10 @@ void LoginManager::doLogin()
 	
 	
 	if(ret != PAM_SUCCESS) {
+		loginFailureAnimation->setDirection(QTimeLine::Forward);
+		if (loginFailureAnimation->state()!=QTimeLine::Running) {
+			loginFailureAnimation->start();
+		}
 		failureNotification->setVisible(true);
 		pam_end(pamh, PAM_AUTH_ERR);
 		pam_close_session(pamh,0);
@@ -228,5 +249,16 @@ void LoginManager::doLogin()
 	
 }
 
+void LoginManager::slotAnimateLoginFailure(int xPos)
+{
+	failureNotification->setPos(xPos,failureNotification->pos().y());
+}
+
+void LoginManager::slotHideFailure()
+{
+	if(loginFailureAnimation->currentFrame() == loginFailureAnimation->frameForTime(0))
+		failureNotification->setVisible(false);
+}
+
 
 
diff --git a/RFIDLoginManager/loginmanager.h b/RFIDLoginManager/loginmanager.h
index 6bad6c2..1629e0f 100644
--- a/RFIDLoginManager/loginmanager.h
+++ b/RFIDLoginManager/loginmanager.h
@@ -22,6 +22,8 @@ class QGraphicsPixmapItem;
 class PasswordItem;
 class QGraphicsTextItem;
 class QSettings;
+class QTimeLine;
+
 class LoginManager : public QWidget, private Ui::Form
 {
 		Q_OBJECT
@@ -48,9 +50,12 @@ class LoginManager : public QWidget, private Ui::Form
 		Rdw125Control control;
 		QSettings *settings;
 		QString activeCard;
+		QTimeLine *loginFailureAnimation;
 	protected slots:
 		void slotReadPublicModeDone(int correct, const QString &hexData, const QString &decData);
 
+		void slotAnimateLoginFailure(int yPos);
+		void slotHideFailure();
 };
 
 #endif
-- 
2.11.4.GIT