Theme Editor: Created the RBMovable abstract class for screen elements that can be moved around, began implementing it and making images, viewports, and album art children of it

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27685 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 71 insertions, 0 deletions

diff --git a/utils/themeeditor/graphics/rbmovable.cpp b/utils/themeeditor/graphics/rbmovable.cpp
new file mode 100644
index 0000000000..11b3a6812f
--- /dev/null
+++ b/utils/themeeditor/graphics/rbmovable.cpp
@@ -0,0 +1,71 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2010 Robert Bieber
+ *
+ * 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.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <QPainter>
+#include <QDebug>
+
+#include "rbmovable.h"
+
+RBMovable::RBMovable(QGraphicsItem* parent)
+    : QGraphicsItem(parent)
+{
+    setFlags(ItemIsMovable | ItemIsSelectable | ItemSendsGeometryChanges);
+}
+
+RBMovable::~RBMovable()
+{
+}
+
+void RBMovable::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
+                      QWidget *widget)
+{
+    if(isSelected())
+    {
+        painter->setBrush(Qt::NoBrush);
+        QPen pen;
+        pen.setStyle(Qt::DashLine);
+        pen.setColor(Qt::green);
+        painter->setPen(pen);
+        painter->drawRect(boundingRect());
+    }
+}
+
+QVariant RBMovable::itemChange(GraphicsItemChange change, const QVariant &value)
+{
+    if(change == ItemPositionChange)
+    {
+        QPointF pos = value.toPointF();
+        QRectF bound = parentItem()->boundingRect();
+
+        pos.setX(qMax(0., pos.x()));
+        pos.setX(qMin(pos.x(), bound.width() - boundingRect().width()));
+
+        pos.setY(qMax(0., pos.y()));
+        pos.setY(qMin(pos.y(), bound.height() - boundingRect().height()));
+
+        saveGeometry();
+
+        return pos;
+    }
+
+    return QGraphicsItem::itemChange(change, value);
+}
+