From a03a71e332294aa500ac8475bb777c2f33609e8b Mon Sep 17 00:00:00 2001
From: Marc Mutz <marc.mutz@kdab.com>
Date: Thu, 1 Mar 2012 10:09:02 +0100
Subject: [PATCH] examples: use QVector<QPointF> instead of QList<QPointF>

QPointF is in the category of types for which QList
is needlessly inefficient (elements are copy-constructed
onto the heap and held through pointers). Use a vector
instead. This is consistent with the QPainter API.

Change-Id: Id0e910c067a60d12fbc175e7ee7da824834be374
Reviewed-by: hjk <qthjk@ovi.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
---
 examples/animation/stickman/animation.cpp                        | 9 +++------
 examples/graphicsview/chip/chip.h                                | 2 +-
 .../widgets/graphicsview/qgraphicsscene/tst_qgraphicsscene.cpp   | 2 +-
 .../gui/graphicsview/qgraphicsview/benchapps/chipTest/chip.h     | 2 +-
 .../benchmarks/gui/graphicsview/qgraphicsview/chiptester/chip.h  | 2 +-
 5 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/examples/animation/stickman/animation.cpp b/examples/animation/stickman/animation.cpp
index 4469b36..afdfae6 100644
--- a/examples/animation/stickman/animation.cpp
+++ b/examples/animation/stickman/animation.cpp
@@ -41,6 +41,7 @@
 #include "animation.h"
 
 #include <QPointF>
+#include <QVector>
 #include <QIODevice>
 #include <QDataStream>
 
@@ -57,11 +58,7 @@ public:
 
     void setNodeCount(int nodeCount)
     {
-        while (nodeCount > m_nodePositions.size())
-            m_nodePositions.append(QPointF());            
-        
-        while (nodeCount < m_nodePositions.size())
-            m_nodePositions.removeLast();
+        m_nodePositions.resize(nodeCount);
     }
 
     QPointF nodePos(int idx) const
@@ -75,7 +72,7 @@ public:
     }
     
 private:
-    QList<QPointF> m_nodePositions;
+    QVector<QPointF> m_nodePositions;
 };
 
 Animation::Animation()
diff --git a/examples/graphicsview/chip/chip.h b/examples/graphicsview/chip/chip.h
index 04fae2d..4c1cfae 100644
--- a/examples/graphicsview/chip/chip.h
+++ b/examples/graphicsview/chip/chip.h
@@ -62,7 +62,7 @@ protected:
 private:
     int x, y;
     QColor color;
-    QList<QPointF> stuff;
+    QVector<QPointF> stuff;
 };
 
 #endif
diff --git a/tests/auto/widgets/graphicsview/qgraphicsscene/tst_qgraphicsscene.cpp b/tests/auto/widgets/graphicsview/qgraphicsscene/tst_qgraphicsscene.cpp
index 220c89e..daa06d0 100644
--- a/tests/auto/widgets/graphicsview/qgraphicsscene/tst_qgraphicsscene.cpp
+++ b/tests/auto/widgets/graphicsview/qgraphicsscene/tst_qgraphicsscene.cpp
@@ -2153,7 +2153,7 @@ void tst_QGraphicsScene::mouseEventPropagation_doubleclick()
 class Scene : public QGraphicsScene
 {
 public:
-    QList<QPointF> mouseMovePoints;
+    QVector<QPointF> mouseMovePoints;
 
 protected:
     void mouseMoveEvent(QGraphicsSceneMouseEvent *event)
diff --git a/tests/benchmarks/gui/graphicsview/qgraphicsview/benchapps/chipTest/chip.h b/tests/benchmarks/gui/graphicsview/qgraphicsview/benchapps/chipTest/chip.h
index b13f4a1..d2d859b 100644
--- a/tests/benchmarks/gui/graphicsview/qgraphicsview/benchapps/chipTest/chip.h
+++ b/tests/benchmarks/gui/graphicsview/qgraphicsview/benchapps/chipTest/chip.h
@@ -62,7 +62,7 @@ protected:
 private:
     int x, y;
     QColor color;
-    QList<QPointF> stuff;
+    QVector<QPointF> stuff;
 };
 
 #endif
diff --git a/tests/benchmarks/gui/graphicsview/qgraphicsview/chiptester/chip.h b/tests/benchmarks/gui/graphicsview/qgraphicsview/chiptester/chip.h
index ef3550e..462109e 100644
--- a/tests/benchmarks/gui/graphicsview/qgraphicsview/chiptester/chip.h
+++ b/tests/benchmarks/gui/graphicsview/qgraphicsview/chiptester/chip.h
@@ -62,7 +62,7 @@ protected:
 private:
     int x, y;
     QColor color;
-    QList<QPointF> stuff;
+    QVector<QPointF> stuff;
 };
 
 #endif
-- 
2.7.4