From 8759ae0a429088d4d1e54b6c0c205e8058150245 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jos=C3=A9=20Fonseca?= <jose.r.fonseca@gmail.com>
Date: Sat, 24 Mar 2012 07:44:43 +0000
Subject: [PATCH] Avoid QImage object copies by using references.

---
 gui/apicalldelegate.cpp | 2 +-
 gui/apitracecall.cpp    | 4 ++--
 gui/apitracecall.h      | 4 ++--
 gui/retracer.h          | 2 +-
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/gui/apicalldelegate.cpp b/gui/apicalldelegate.cpp
index 221462e..c687175 100644
--- a/gui/apicalldelegate.cpp
+++ b/gui/apicalldelegate.cpp
@@ -37,7 +37,7 @@ void ApiCallDelegate::paint(QPainter *painter,
         // draw thumbnail of frame
         if(event->type() == ApiTraceEvent::Frame) {
             ApiTraceFrame *frame = static_cast<ApiTraceFrame*>(event);
-            QImage thumbnail = frame->thumbnail();
+            const QImage & thumbnail = frame->thumbnail();
             if (!thumbnail.isNull()) {
                 painter->drawImage(option.rect.topLeft() + offset, thumbnail);
                 offset += QPoint(option.rect.height() + 16, 0);
diff --git a/gui/apitracecall.cpp b/gui/apitracecall.cpp
index 4d91001..dfaaeef 100644
--- a/gui/apitracecall.cpp
+++ b/gui/apitracecall.cpp
@@ -1198,12 +1198,12 @@ unsigned ApiTraceFrame::lastCallIndex() const
     }
 }
 
-void ApiTraceFrame::setThumbnail(QImage thumbnail)
+void ApiTraceFrame::setThumbnail(const QImage & thumbnail)
 {
     m_thumbnail = thumbnail;
 }
 
-QImage ApiTraceFrame::thumbnail() const
+const QImage & ApiTraceFrame::thumbnail() const
 {
     return m_thumbnail;
 }
diff --git a/gui/apitracecall.h b/gui/apitracecall.h
index 8d0e6db..945ab0c 100644
--- a/gui/apitracecall.h
+++ b/gui/apitracecall.h
@@ -336,8 +336,8 @@ public:
     void setLastCallIndex(unsigned index);
     unsigned lastCallIndex() const;
 
-    void setThumbnail(QImage thumbnail);
-    QImage thumbnail() const;
+    void setThumbnail(const QImage & thumbnail);
+    const QImage & thumbnail() const;
 
 private:
     ApiTrace *m_parentTrace;
diff --git a/gui/retracer.h b/gui/retracer.h
index ab9e5f3..1a78841 100644
--- a/gui/retracer.h
+++ b/gui/retracer.h
@@ -100,7 +100,7 @@ public:
 signals:
     void finished(const QString &output);
     void foundState(ApiTraceState *state);
-    void foundThumbnails(const QList<QImage> &humbnails);
+    void foundThumbnails(const QList<QImage> &thumbnails);
     void error(const QString &msg);
     void retraceErrors(const QList<ApiTraceError> &errors);
 
-- 
2.7.4