Implemented PictureViewer class

Don't call an external program for showing a picture. When an image is
doubleclicked a new windows shows the picture. Pictures can still be
opened in an exteral program by using the "Open with..." context menu
item.

1 files changed, 48 insertions, 0 deletions

diff --git a/pictureviewerinfoitem.cpp b/pictureviewerinfoitem.cpp
new file mode 100644
index 0000000..e80e8c6
--- /dev/null
+++ b/pictureviewerinfoitem.cpp
@@ -0,0 +1,48 @@
+/*
+  This program is free software; you can redistribute it and/or
+  modify it under the terms of the GNU General Public License
+  as published by the Free Software Foundation; either version
+  2 of the License, or (at your option) any later version.
+*/
+
+#include <QApplication>
+#include <QFont>
+#include <QFontMetrics>
+#include <QPen>
+#include <QBrush>
+#include <QPainter>
+
+#include "pictureviewerinfoitem.h"
+
+PictureviewerInfoItem::PictureviewerInfoItem(const QString &fileName, QGraphicsItem *parent) : QGraphicsItem(parent), mFileName(fileName){
+	setZValue(1);
+}
+
+QRectF PictureviewerInfoItem::boundingRect() const {
+	QSize size = qApp->fontMetrics().size(Qt::TextSingleLine, mFileName);
+	size += QSize(2, 2);
+	QRectF retval;
+	retval.setWidth(size.width());
+	retval.setHeight(size.height());
+	return retval;
+}
+
+void PictureviewerInfoItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget){
+	Q_UNUSED(option);
+	Q_UNUSED(widget);
+	painter->save();
+	painter->setRenderHint(QPainter::Antialiasing, false);
+	painter->setRenderHint(QPainter::TextAntialiasing, true);
+	QRectF boundRect = boundingRect();
+	QColor backgroundColor(Qt::white);
+	backgroundColor.setAlpha(70);
+	QBrush brush(backgroundColor);
+	painter->setPen(QPen(Qt::NoPen));
+	painter->setBrush(brush);
+	painter->drawRect(boundRect);
+	QPen pen(Qt::	black);
+	painter->setPen(pen);
+	QPoint start(1, qApp->fontMetrics().ascent() + 1);
+	painter->drawText(start, mFileName);
+	painter->restore();
+}