Implement hover over movies

What started as an attempt to show a frame from a movie when hovering
over it, ended in a huge bugfix commit for hover related stuff. This
commit is definitely not atomic.

When hovering over a movie present on the filesytem a frame is shown.
The time frame is configurable. While digging into the code I noticed
some bugs.

Bugfixes:
* fix label for hove archive action. It was labeled for hovering over
directories in FSWidget.
* Hovering over directories didn't have an action. Also read the
appropriate value from QSettings.

Other:
* add icons for hovering over directories and hovering over movies
* replace SheMov::toggleHover(pics|some other) with a QSignalMapper

1 files changed, 25 insertions, 1 deletions

diff --git a/helper.cpp b/helper.cpp
index fdab083..126b83d 100644
--- a/helper.cpp
+++ b/helper.cpp
@@ -14,6 +14,9 @@
 #include <QHash>
 #include <QSettings>
 #include <QDir>
+#include <QPixmap>
+#include <QTemporaryFile>
+#include <QProcess>
 
 #include <stdio.h>
 
@@ -149,7 +152,7 @@ namespace Helper {
 		return qMakePair(programData.value("path").toString(), programData.value("args").toStringList());
 	}
 
-	QString durationFromSecs(qint64 secs){
+	const QString durationFromSecs(qint64 secs){
 		int minutes = secs / 60;
 		int hours = 0;
 		int seconds = 0;
@@ -164,6 +167,27 @@ namespace Helper {
 		return retval;
 	}
 
+	const QPixmap grabFrame(const QString &file, QString when){
+		QSettings s;
+		QString ffMpegPath = s.value("paths/ffmpeg").toString();
+		if(when.isEmpty()){
+			when = s.value("ui/grabframe", "00:00:00").toString();
+		}
+		QString tmptmp = QString("%1/smhover-XXXXXX.png").arg(QDir::tempPath());
+		QTemporaryFile tmpPic(tmptmp);
+		if(tmpPic.open()){
+			QStringList ffMpegArgs = QStringList() << "-vframes" << "1" << "-ss" << when << "-i" << file << "-y" << tmpPic.fileName();
+			QProcess ffmpeg;
+			ffmpeg.start(ffMpegPath, ffMpegArgs);
+			if(!ffmpeg.waitForStarted()){
+				return QPixmap();
+			}
+			ffmpeg.waitForFinished();
+			return QPixmap(tmpPic.fileName());
+		}
+		return QPixmap();
+	}
+
 	bool SortFileInfoList::operator ()(const QFileInfo &lhs, const QFileInfo &rhs) const {
 		return lhs.fileName().toLower() < rhs.fileName().toLower();
 	}