Enhance preview

* Show time when snapshot was taken.
* Align the snapshots properly.
* Show BusyCursor when generating preview.

1 files changed, 19 insertions, 5 deletions

diff --git a/helper.cpp b/helper.cpp
index 7349b09..cff490c 100644
--- a/helper.cpp
+++ b/helper.cpp
@@ -260,13 +260,15 @@ namespace Helper {
         retval.fill(Qt::transparent);
         QPainter p(&retval);
         QImage img1 = snapshot(path, 20);
-        p.drawImage(0, 0, img1);
+        int yOff = (480 - img1.height()) / 2;
+        yOff = yOff < 0 ? 0 : yOff;
+        p.drawImage(0, yOff, img1);
         QImage img2 = snapshot(path, interval * 2);
-        p.drawImage(680, 0, img2);
+        p.drawImage(680, yOff, img2);
         QImage img3 = snapshot(path, interval * 3);
-        p.drawImage(0, 520, img3);
+        p.drawImage(0, 520 + yOff, img3);
         QImage img4 = snapshot(path, secs - 60);
-        p.drawImage(680, 520, img4);
+        p.drawImage(680, 520 + yOff, img4);
         QPixmap pmretval = QPixmap::fromImage(retval);
         return pmretval;
     }
@@ -287,7 +289,19 @@ namespace Helper {
             ffproc.waitForFinished();
         }
         QImage retval(tf.fileName());
-        return retval.scaledToWidth(640);
+        retval = retval.scaledToWidth(640);
+        Duration dur(where);
+        QFont font("courier", 10);
+        QFontMetrics fm(font);
+        int width = fm.width(dur.toString());
+        int height = fm.height();
+        QPainter p(&retval);
+        p.setBrush(QBrush(QColor(255, 255, 255, 70)));
+        QRect durRect(640 / 2 - width / 2 - 4, retval.height() - height - 8, width + 4, height + 4);
+        p.drawRect(durRect);
+        p.setPen(Qt::black);
+        p.drawText(durRect, Qt::AlignCenter, dur.toString());
+        return retval;
     }
 
     QVariant picSize(const QString &path){