From 7ff7502c4d41c597c8475566495fc39d8524c57c Mon Sep 17 00:00:00 2001
From: 020535 <020535@07accd87-1e0b-0410-939d-c05d8a058e03>
Date: Sat, 17 Oct 2009 13:12:44 +0000
Subject: [PATCH] Sizes are now code-settable using c'tor parameters. Default
 values allow for code backwards-compat. View and output need not be the same
 size.

git-svn-id: https://dilbert.hig.no/svn/student/020535/qopencamwidget/trunk@189 07accd87-1e0b-0410-939d-c05d8a058e03
---
 Doxyfile           |  2 +-
 qopencamwidget.cpp | 39 +++++++++++++++++++++++++++++++--------
 qopencamwidget.h   |  4 +++-
 view.cpp           |  2 +-
 4 files changed, 36 insertions(+), 11 deletions(-)

diff --git a/Doxyfile b/Doxyfile
index 9776e46..1762853 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -160,7 +160,7 @@ FILTER_SOURCE_FILES    = NO
 # configuration options related to source browsing
 #---------------------------------------------------------------------------
 SOURCE_BROWSER         = YES
-INLINE_SOURCES         = YES
+INLINE_SOURCES         = NO
 STRIP_CODE_COMMENTS    = YES
 REFERENCED_BY_RELATION = YES
 REFERENCES_RELATION    = YES
diff --git a/qopencamwidget.cpp b/qopencamwidget.cpp
index eb5e676..9b91461 100644
--- a/qopencamwidget.cpp
+++ b/qopencamwidget.cpp
@@ -63,10 +63,22 @@
  *
  * \endcode
  *
+ * Setting sizes is done during construction, and are not modifiable
+ * after the fact:
+ * \code
+ * QOpenCamWidget *cw = new QOpenCamWidget(this,
+ *                      new QSize(320, 240),
+ *                      new QSize(960, 720));
+ * \endcode
+ *
  * \param *parent The parent widget containing this widget, defaults to NULL.
+ * \param *viewSize The size of the image displayed, thus the size of the widget,
+ *          defaults to 640x480
+ * \param *resolution The actual resolution captured, and size of the snapshot
+ *          created, defaults t0 960x720, should be larger than viewSize
  *
  **/	
-QOpenCamWidget::QOpenCamWidget(QWidget *parent) 
+QOpenCamWidget::QOpenCamWidget(QWidget *parent, QSize *viewSize, QSize *resolution)
 	: QWidget(parent) 
 {
 	// Setting sane default values (i.e. NULL) for 
@@ -74,6 +86,20 @@ QOpenCamWidget::QOpenCamWidget(QWidget *parent)
 	// private QTimer    *frametimer from class definition
 	nextFrame = NULL;
 	frametimer = NULL;
+        if ( viewSize == NULL )
+        {
+            vSize = new QSize(640, 480);
+        }
+        else vSize = viewSize;
+        if ( resolution == NULL )
+        {
+            res = new QSize(960, 720);
+        }
+        else res = resolution;
+
+        this->setMinimumSize(*vSize);
+        this->setMaximumSize(*vSize);
+
 }
 
 QOpenCamWidget::~QOpenCamWidget(void)
@@ -109,7 +135,8 @@ QOpenCamWidget::paintEvent ( QPaintEvent * event )
 		// To make the widget as blazingly fast as possible
 		// we output the last captured frame direclty onto
 		// the widget area.
-		paint->drawImage(event->rect(), *nextFrame);
+                // It has been slowed down a bit by doing a resize tho...
+                paint->drawImage(event->rect(), nextFrame->scaled( vSize->width(), vSize->height() ));
 	}
 	else
 	{
@@ -142,15 +169,11 @@ QOpenCamWidget::grabCapture(int source)
 		qDebug() << "QOpenCamWidget::grabCapture(" << source << ") failed";
 		return false;
 	}
-        cvSetCaptureProperty( capture, CV_CAP_PROP_FRAME_WIDTH, 960 );
-        cvSetCaptureProperty( capture, CV_CAP_PROP_FRAME_HEIGHT, 720 );
+        cvSetCaptureProperty( capture, CV_CAP_PROP_FRAME_WIDTH, res->width() );
+        cvSetCaptureProperty( capture, CV_CAP_PROP_FRAME_HEIGHT, res->height() );
 
         cvGrabFrame(capture); // Grab a single frame, do resizing based on it.
         IplImage *image = cvRetrieveFrame(capture);
-        QSize t_size = QSize(image->width,image->height);
-
-	this->setMinimumSize(t_size);
-	this->setMaximumSize(t_size);
 
 	return true;
 }
diff --git a/qopencamwidget.h b/qopencamwidget.h
index 560d78b..13602f4 100644
--- a/qopencamwidget.h
+++ b/qopencamwidget.h
@@ -35,10 +35,12 @@ class QOpenCamWidget
 		CvCapture   *capture;
 		QTimer      *frametimer;
 		QImage      *nextFrame;
+                QSize       *vSize;
+                QSize       *res;
 
 	public:
 		// Defaults, standard elements ;)
-		QOpenCamWidget(QWidget *parent = 0);
+                QOpenCamWidget(QWidget *parent = 0, QSize *viewSize = NULL, QSize *resolution = NULL);
 		~QOpenCamWidget(void);
 
 		// Overides, reimplementation of abstract
diff --git a/view.cpp b/view.cpp
index bd0808a..0c81c3c 100644
--- a/view.cpp
+++ b/view.cpp
@@ -41,7 +41,7 @@ View::View( QWidget *parent)
 	trigger->setText("Take picture");
 
 	// Create the widget, setting the Main window (this) as its parent.
-	QOpenCamWidget *cwcam = new QOpenCamWidget(this);
+        QOpenCamWidget *cwcam = new QOpenCamWidget(this, new QSize(320, 240), new QSize(960,720));
 	// bool QOpenCamWidget::grabCapture(int source) tries to get a
 	// video capture handle from OpenCV, using the source number
 	// as the device to open. Here I use -1 as the number, meaning
-- 
2.39.2