From ee20613e3d9b5d47bc928742982f7e230b495c51 Mon Sep 17 00:00:00 2001
From: Marco Martin <notmart@gmail.com>
Date: Sat, 5 Dec 2009 15:25:44 +0000
Subject: [PATCH] support rewind

svn path=/trunk/KDE/kdelibs/; revision=1059028
---
 animations/slide.cpp | 35 ++++++++++++++++++++---------------
 animations/slide_p.h |  2 +-
 2 files changed, 21 insertions(+), 16 deletions(-)

diff --git a/animations/slide.cpp b/animations/slide.cpp
index c773c7a2f..ad572de92 100644
--- a/animations/slide.cpp
+++ b/animations/slide.cpp
@@ -63,7 +63,7 @@ void SlideAnimation::updateCurrentTime(int currentTime)
     QGraphicsWidget *w = widgetToAnimate();
     if (w && state() == QAbstractAnimation::Running) {
         qreal delta = currentTime / qreal(duration());
-        w->setPos(m_startPos * (1-delta) + (m_target * delta));
+        w->setPos(m_startPos * (1-delta) + (m_targetPos * delta));
     }
 }
 
@@ -78,43 +78,43 @@ void SlideAnimation::updateState(QAbstractAnimation::State newState, QAbstractAn
         qreal newX = m_startPos.x();
         qreal newY = m_startPos.y();
 
-        kDebug()<<movementDirection();
+        int actualDistance = (direction() == QAbstractAnimation::Forward?distance():-distance());
         switch (movementDirection()) {
         case MoveUp:
-            newY -= distance();
+            newY -= actualDistance;
             break;
 
         case MoveRight:
-            newX += distance();
+            newX += actualDistance;
             break;
 
         case MoveDown:
-            newY += distance();
+            newY += actualDistance;
             break;
 
         case MoveLeft:
-            newX -= distance();
+            newX -= actualDistance;
             break;
 
         case MoveUpRight:
-            newX += distance();
-            newY -= distance();
+            newX += actualDistance;
+            newY -= actualDistance;
             break;
 
         case MoveDownRight:
-            newX += distance();
-            newY += distance();
+            newX += actualDistance;
+            newY += actualDistance;
             break;
 
         case MoveDownLeft:
-            newX -= distance();
-            newY += distance();
+            newX -= actualDistance;
+            newY += actualDistance;
             break;
 
 
         case MoveUpLeft:
-            newX -= distance();
-            newY -= distance();
+            newX -= actualDistance;
+            newY -= actualDistance;
             break;
 
         default:
@@ -122,7 +122,12 @@ void SlideAnimation::updateState(QAbstractAnimation::State newState, QAbstractAn
             return;
         }
 
-        m_target = QPointF(newX, newY);
+        if (direction() == QAbstractAnimation::Forward) {
+            m_targetPos = QPointF(newX, newY);
+        } else {
+            m_targetPos = m_startPos;
+            m_startPos = QPointF(newX, newY);
+        }
     }
 }
 
diff --git a/animations/slide_p.h b/animations/slide_p.h
index 85482cf88..af523beb7 100644
--- a/animations/slide_p.h
+++ b/animations/slide_p.h
@@ -90,7 +90,7 @@ private:
     qreal m_animDistance;
 
     QPointF m_startPos;
-    QPointF m_target;
+    QPointF m_targetPos;
 };
 
 }