FlipLayout committed

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=747176

CMakeLists.txt

@@ -37,6 +37,7 @@ set(plasma_LIB_SRCS
     layouts/freelayout.cpp
     layouts/nodelayout.cpp
     layouts/flowlayout.cpp
+    layouts/fliplayout.cpp
     layouts/layout.cpp
     layouts/layoutanimator.cpp
     layouts/layoutitem.cpp
@@ -158,6 +159,7 @@ install(FILES
     layouts/freelayout.h
     layouts/nodelayout.h
     layouts/flowlayout.h
+    layouts/fliplayout.h
     layouts/layout.h
     layouts/layoutanimator.h
     layouts/layoutitem.h

layouts/fliplayout.cpp

@@ -0,0 +1,25 @@
+/*
+ *   Copyright (C) 2007 Ivan Cukic <ivan.cukic+kde@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Lesser/Library General Public License version 2,
+ *   or (at your option) any later version, as published by the Free
+ *   Software Foundation
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU Lesser/Library General Public License for more details
+ *
+ *   You should have received a copy of the GNU Lesser/Library General Public
+ *   License along with this program; if not, write to the
+ *   Free Software Foundation, Inc.,
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include "fliplayout.h"
+
+namespace Plasma
+{
+
+}

layouts/fliplayout.h

@@ -0,0 +1,90 @@
+/*
+ *   Copyright (C) 2007 Ivan Cukic <ivan.cukic+kde@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Lesser General Public License version 2,
+ *   or (at your option) any later version, as published by the Free
+ *   Software Foundation
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU Lesser General Public License for more details
+ *
+ *   You should have received a copy of the GNU Lesser General Public
+ *   License along with this program; if not, write to the
+ *   Free Software Foundation, Inc.,
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef PLASMA_FLIPLAYOUT_H_
+#define PLASMA_FLIPLAYOUT_H_
+
+#include <plasma/plasma.h>
+#include <plasma/layouts/layout.h>
+#include <plasma/widgets/widget.h>
+#include <cmath>
+#include <QMap>
+
+namespace Plasma
+{
+
+template <typename SuperLayout>
+class FlipLayout : public SuperLayout { //Plasma::Layout
+public:
+    void setFlip(Flip flip)
+    {
+        m_flip = flip;
+    }
+
+    Flip flip()
+    {
+        return m_flip;
+    }
+
+private:
+    Flip m_flip;
+
+protected:
+    void relayout()
+    {
+        SuperLayout::relayout();
+        QRectF rect = SuperLayout::geometry();
+
+        int count = SuperLayout::count();
+
+        if (m_flip == NoFlip) {
+            return;
+        }
+
+        QRectF childGeometry;
+        for (int i = 0; i < count; i++) {
+            Plasma::LayoutItem * item = SuperLayout::itemAt(i);
+
+            if (!item) continue;
+
+            childGeometry = item->geometry();
+            if (m_flip & HorizontalFlip) {
+                // 2 * rect.left() - twice because we already have one
+                // value of rect.left() inside the childGeometry.left()
+                childGeometry.moveLeft(
+                    2 * rect.left()       + rect.width()
+                      - childGeometry.left()  - childGeometry.width()
+                );
+            }
+            if (m_flip & VerticalFlip) {
+                // 2 * rect.top() - same reason as aforemontioned
+                childGeometry.moveTop(
+                    2 * rect.top()      + rect.height()
+                      - childGeometry.top() - childGeometry.height()
+                );
+            }
+            item->setGeometry(childGeometry);
+        }
+    }
+
+};
+
+}
+
+#endif /*FlipLayout_H_*/

plasma.h

@@ -105,6 +105,15 @@ enum Position { LeftPositioned    /**< Positioned left */,
                 CenterPositioned  /**< Positioned in the center */
               };
 
+/**
+ * Flip enumeration
+ */
+enum FlipDirection { NoFlip = 0          /**< Do not flip */,
+                     HorizontalFlip = 1   /**< Flip horizontally */,
+                     VerticalFlip = 2    /**< Flip vertically */
+                   };
+Q_DECLARE_FLAGS(Flip, FlipDirection)
+
 /**
  * Zoom levels that Plasma is aware of...
  **/
@@ -147,5 +156,6 @@ PLASMA_EXPORT QPainterPath roundedRectangle(const QRectF& rect, qreal radius);
 } // Plasma namespace
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(Plasma::Constraints)
+Q_DECLARE_OPERATORS_FOR_FLAGS(Plasma::Flip)
 
 #endif // multiple inclusion guard