From e70bef88fdb5ffdf1c2dcf99ac9e22181d18f5ac Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sat, 27 Apr 2013 12:09:05 +0200
Subject: Implement video widgets properly, so they're fast enough

---
 ftnoir_tracker_ht/video_widget.cpp |  9 +++------
 ftnoir_tracker_ht/video_widget.h   | 10 ++++++----
 ftnoir_tracker_pt/video_widget.cpp |  4 ++--
 ftnoir_tracker_pt/video_widget.h   | 10 ++++++----
 4 files changed, 17 insertions(+), 16 deletions(-)

diff --git a/ftnoir_tracker_ht/video_widget.cpp b/ftnoir_tracker_ht/video_widget.cpp
index 01f2516a..1504822d 100644
--- a/ftnoir_tracker_ht/video_widget.cpp
+++ b/ftnoir_tracker_ht/video_widget.cpp
@@ -14,13 +14,10 @@ using namespace std;
 void VideoWidget::update_image(unsigned char *frame, int width, int height)
 {
     QMutexLocker((QMutex*)&mtx);
-    QImage qframe = QImage(frame, width, height, 3 * width, QImage::Format_RGB888).rgbSwapped().mirrored();
+    QImage qframe = QImage(frame, width, height, 3 * width, QImage::Format_RGB888).rgbSwapped();
     if (qframe.size() == size() || (qframe.width() <= this->width() && qframe.height() <= this->height()))
-        qframe = qframe.mirrored();
+        qframe = qframe;
     else
-        qframe = qframe.scaled(size(), Qt::IgnoreAspectRatio, Qt::FastTransformation).mirrored();
-    QPainter painter(&qframe);
-    painter.setPen(Qt::blue);
-    painter.setBrush(Qt::blue);
+        qframe = qframe.scaled(size(), Qt::IgnoreAspectRatio, Qt::FastTransformation);
     pixmap = QPixmap::fromImage(qframe);
 }
diff --git a/ftnoir_tracker_ht/video_widget.h b/ftnoir_tracker_ht/video_widget.h
index 51acc35e..9d8ab489 100644
--- a/ftnoir_tracker_ht/video_widget.h
+++ b/ftnoir_tracker_ht/video_widget.h
@@ -15,20 +15,22 @@
 #include <QMutexLocker>
 #include <QLabel>
 #include <QPainter>
+#include <QPaintEvent>
 
 // ----------------------------------------------------------------------------
-class VideoWidget : public QLabel
+class VideoWidget : public QWidget
 {
 	Q_OBJECT
 
 public:
-    VideoWidget(QWidget *parent) : QLabel(parent), mtx() {
+    VideoWidget(QWidget *parent) : QWidget(parent), mtx() {
 	}
     void update_image(unsigned char* frame, int width, int height);
 protected slots:
     void paintEvent( QPaintEvent* e ) {
-        setPixmap(pixmap);
-        QLabel::paintEvent(e);
+        QMutexLocker((QMutex*)&mtx);
+        QPainter painter(this);
+        painter.drawPixmap(e->rect(), pixmap);
     }
 private:
     QMutex mtx;
diff --git a/ftnoir_tracker_pt/video_widget.cpp b/ftnoir_tracker_pt/video_widget.cpp
index fe2b2e34..7ca1892a 100644
--- a/ftnoir_tracker_pt/video_widget.cpp
+++ b/ftnoir_tracker_pt/video_widget.cpp
@@ -32,8 +32,8 @@ void VideoWidget::update_image(Mat frame, std::auto_ptr< vector<Vec2f> > points)
     else
         qframe = qframe.scaled(size(), Qt::IgnoreAspectRatio, Qt::FastTransformation);
     QPainter painter(&qframe);
-    painter.setPen(Qt::blue);
-    painter.setBrush(Qt::blue);
+    painter.setPen(Qt::red);
+    painter.setBrush(Qt::red);
     if (points.get() != NULL) {
         const int crosshair_radius = 10;
         for (vector<Vec2f>::iterator iter = points->begin();
diff --git a/ftnoir_tracker_pt/video_widget.h b/ftnoir_tracker_pt/video_widget.h
index a68d8028..eb63a15e 100644
--- a/ftnoir_tracker_pt/video_widget.h
+++ b/ftnoir_tracker_pt/video_widget.h
@@ -16,20 +16,22 @@
 #include <QMutexLocker>
 #include <QLabel>
 #include <QPainter>
+#include <QPaintEvent>
 
 // ----------------------------------------------------------------------------
-class VideoWidget : public QLabel
+class VideoWidget : public QWidget
 {
 	Q_OBJECT
 
 public:
-    VideoWidget(QWidget *parent) : QLabel(parent), mtx() {
+    VideoWidget(QWidget *parent) : QWidget(parent), mtx() {
 	}
     void update_image(cv::Mat frame, std::auto_ptr< std::vector<cv::Vec2f> > points);
 protected slots:
     void paintEvent( QPaintEvent* e ) {
-        setPixmap(pixmap);
-        QLabel::paintEvent(e);
+        QMutexLocker((QMutex*)&mtx);
+        QPainter painter(this);
+        painter.drawPixmap(e->rect(), pixmap);
     }
 
 private:
-- 
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