From: Anton Arbring <aarbring@cisco.com>
Date: Fri, 18 Jul 2014 10:54:34 +0000 (+0200)
Subject: qv4l2: added fullscreen functionality for capture window
X-Git-Tag: v4l-utils-1.3.90~86
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=44c58951fc1ebafc06febcb77ce61567cfbe6fe9;p=platform%2Fupstream%2Fv4l-utils.git

qv4l2: added fullscreen functionality for capture window

One can enter fullscreen mode by a push button, the F key
or by a double click. To go back to window mode; all
the same options plus the escape key.

An eventfilter is added to show a status bar when moving
the mouse to the bottom of the screen while in fullscreen mode.

Signed-off-by: Anton Arbring <aarbring@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---

diff --git a/utils/qv4l2/capture-win.cpp b/utils/qv4l2/capture-win.cpp
index 640b7f6..864b05d 100644
--- a/utils/qv4l2/capture-win.cpp
+++ b/utils/qv4l2/capture-win.cpp
@@ -40,7 +40,11 @@ CaptureWin::CaptureWin()
 	connect(m_hotkeyClose, SIGNAL(activated()), this, SLOT(close()));
 	m_hotkeyScaleReset = new QShortcut(Qt::CTRL+Qt::Key_F, this);
 	connect(m_hotkeyScaleReset, SIGNAL(activated()), this, SLOT(resetSize()));
-	m_frame.format      =  0;
+	m_hotkeyExitFullscreen = new QShortcut(Qt::Key_Escape, this);
+	connect(m_hotkeyExitFullscreen, SIGNAL(activated()), this, SLOT(escape()));
+	m_hotkeyToggleFullscreen = new QShortcut(Qt::Key_F, this);
+	connect(m_hotkeyToggleFullscreen, SIGNAL(activated()), this, SLOT(fullScreen()));
+	m_frame.format = 0;
 	m_frame.size.setWidth(0);
 	m_frame.size.setHeight(0);
 	m_frame.planeData[0] = NULL;
@@ -96,13 +100,26 @@ void CaptureWin::buildWindow(QWidget *videoSurface)
 	QVBoxLayout *vbox = new QVBoxLayout(this);
 	m_information.setText("No Frame");
 	vbox->addWidget(videoSurface, 2000);
-	vbox->addWidget(&m_information, 1, Qt::AlignBottom);
+	bottom = new QFrame(parentWidget());
+	bottom->installEventFilter(this);
+	
+	hbox = new QHBoxLayout(bottom);
+	hbox->addWidget(&m_information, 1, Qt::AlignVCenter);
+	
+	m_fullscreenButton = new QPushButton("Show Fullscreen", bottom);
+	m_fullscreenButton->setMaximumWidth(200);
+	m_fullscreenButton->setMinimumWidth(100);
+	hbox->addWidget(m_fullscreenButton, 1, Qt::AlignVCenter);
+	connect(m_fullscreenButton, SIGNAL(clicked()), SLOT(fullScreen()));
+	vbox->addWidget(bottom, 0, Qt::AlignBottom);
 	vbox->getContentsMargins(&l, &t, &r, &b);
-	vbox->setSpacing(b);
+	vbox->setSpacing(t+b);
 }
 
 void CaptureWin::resetSize()
 {
+	if (isFullScreen())
+		toggleFullScreen();
 	if (isMaximized())
 		showNormal();
 
@@ -274,6 +291,63 @@ void CaptureWin::setPixelAspectRatio(double ratio)
 	resetSize();
 }
 
+void CaptureWin::mouseDoubleClickEvent( QMouseEvent * e )
+{
+	toggleFullScreen();
+}
+
+bool CaptureWin::eventFilter(QObject *target, QEvent *event)
+{
+	if (target == bottom && isFullScreen()) {
+		if (event->type() == QEvent::Enter) {
+			bottom->setStyleSheet("background-color:#bebebe;");
+			bottom->setFixedHeight(75);
+			m_fullscreenButton->show();
+			m_information.show();
+			return true;
+		}
+		if (event->type() == QEvent::Leave && bottom->geometry().bottom() >= QCursor::pos().y()) {
+			bottom->setMinimumHeight(0);
+			bottom->setStyleSheet("background-color:#000000;");
+			m_fullscreenButton->hide();
+			m_information.hide();
+			return true;
+		}
+	}
+	return false;
+}
+
+void CaptureWin::fullScreen()
+{
+	toggleFullScreen();
+}
+
+void CaptureWin::escape()
+{
+	if(isFullScreen())
+		toggleFullScreen();
+}
+
+void CaptureWin::toggleFullScreen()
+{
+	if (isFullScreen()) {
+		showNormal();
+		bottom->setMinimumHeight(0);
+		bottom->setMaximumHeight(height());
+		m_fullscreenButton->setText("Show Fullscreen");
+		setStyleSheet("background-color:none;");
+		bottom->setStyleSheet("background-color:none;");
+		m_fullscreenButton->show();
+		m_information.show();
+	} else {
+		showFullScreen();
+		m_fullscreenButton->setText("Exit Fullscreen");
+		setStyleSheet("background-color:#000000;");
+		m_fullscreenButton->hide();
+		m_information.hide();
+	}
+}
+
 void CaptureWin::closeEvent(QCloseEvent *event)
 {
 	QWidget::closeEvent(event);
diff --git a/utils/qv4l2/capture-win.h b/utils/qv4l2/capture-win.h
index 3ba4755..54bb800 100644
--- a/utils/qv4l2/capture-win.h
+++ b/utils/qv4l2/capture-win.h
@@ -25,6 +25,7 @@
 #include <QWidget>
 #include <QShortcut>
 #include <QLabel>
+#include <QPushButton>
 
 enum CropMethod {
 	// Crop Height
@@ -70,6 +71,7 @@ public:
 	virtual void setDisplayColorspace(unsigned colorspace) = 0;
 	virtual void setBlending(bool enable) = 0;
 	void setCropMethod(CropMethod crop);
+	void toggleFullScreen();
 
 	/**
 	 * @brief Set a frame into the capture window.
@@ -147,8 +149,14 @@ public:
 public slots:
 	void resetSize();
 
+private slots:
+	void fullScreen();
+	void escape();
+
 protected:
 	void closeEvent(QCloseEvent *event);
+	void mouseDoubleClickEvent(QMouseEvent *e);
+	bool eventFilter(QObject *target, QEvent *event);
 
 	/**
 	 * @brief Get the amount of space outside the video frame.
@@ -212,5 +220,10 @@ private:
 	static CropMethod m_cropMethod;
 	QShortcut *m_hotkeyClose;
 	QShortcut *m_hotkeyScaleReset;
+	QShortcut *m_hotkeyExitFullscreen;
+	QShortcut *m_hotkeyToggleFullscreen;
+	QPushButton *m_fullscreenButton;
+	QHBoxLayout *hbox;
+	QFrame *bottom;
 };
 #endif