3 files changed, 148 insertions, 1 deletions
diff --git a/src/gui/widgets/layout.h b/src/gui/widgets/layout.h
index d631c154..9ba97fa1 100644
--- a/src/gui/widgets/layout.h
+++ b/src/gui/widgets/layout.h
@@ -317,4 +317,4 @@ class Layout: public LayoutCell
         bool mComputed;
 };
 
-#endif
+#endif // _TMW_WIDGET_LAYOUT_H__
diff --git a/src/gui/widgets/layouthelper.cpp b/src/gui/widgets/layouthelper.cpp
new file mode 100644
index 00000000..4dddaab3
--- /dev/null
+++ b/src/gui/widgets/layouthelper.cpp
@@ -0,0 +1,63 @@
+/*
+ *  The Mana World
+ *  Copyright 2009 The Mana World Development Team
+ *
+ *  This file is part of The Mana World.
+ *
+ *  The Mana World 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
+ *  any later version.
+ *
+ *  The Mana World 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with The Mana World; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "layouthelper.h"
+
+LayoutHelper::LayoutHelper(gcn::Container *container):
+    mContainer(container)
+{
+    mContainer->addWidgetListener(this);
+}
+
+LayoutHelper::~LayoutHelper()
+{
+    mContainer->removeWidgetListener(this);
+}
+
+Layout &LayoutHelper::getLayout()
+{
+    return mLayout;
+}
+
+LayoutCell &LayoutHelper::place(int x, int y, gcn::Widget *wg, int w, int h)
+{
+    mContainer->add(wg);
+    return mLayout.place(wg, x, y, w, h);
+}
+
+ContainerPlacer LayoutHelper::getPlacer(int x, int y)
+{
+    return ContainerPlacer(mContainer, &mLayout.at(x, y));
+}
+
+void LayoutHelper::reflowLayout(int w, int h)
+{
+    mLayout.reflow(w, h);
+    mContainer->setSize(w, h);
+}
+
+void LayoutHelper::widgetResized(const gcn::Event &event)
+{
+    const gcn::Rectangle area = mContainer->getChildrenArea();
+    int w = area.width;
+    int h = area.height;
+    mLayout.reflow(w, h);
+}
diff --git a/src/gui/widgets/layouthelper.h b/src/gui/widgets/layouthelper.h
new file mode 100644
index 00000000..b1039fb0
--- /dev/null
+++ b/src/gui/widgets/layouthelper.h
@@ -0,0 +1,84 @@
+/*
+ *  The Mana World
+ *  Copyright 2009 The Mana World Development Team
+ *
+ *  This file is part of The Mana World.
+ *
+ *  The Mana World 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
+ *  any later version.
+ *
+ *  The Mana World 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with The Mana World; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef LAYOUTHELPER_H
+#define LAYOUTHELPER_H
+
+#include "layout.h"
+
+#include <guichan/widgetlistener.hpp>
+
+/**
+ * A helper class for adding a layout to a Guichan container widget. The layout
+ * will register itself as a widget listener and relayout the widgets in the
+ * container dynamically on resize.
+ */
+class LayoutHelper : public gcn::WidgetListener
+{
+    public:
+        /**
+         * Constructor.
+         */
+        LayoutHelper(gcn::Container *container);
+
+        /**
+         * Destructor.
+         */
+        ~LayoutHelper();
+
+        /**
+         * Gets the layout handler.
+         */
+        Layout &getLayout();
+
+        /**
+         * Computes the position of the widgets according to the current
+         * layout. Resizes the managed container so that the layout fits.
+         *
+         * @note This function is meant to be called with fixed-size
+         * containers.
+         *
+         * @param w if non-zero, force the container to this width.
+         * @param h if non-zero, force the container to this height.
+         */
+        void reflowLayout(int w = 0, int h = 0);
+
+        /**
+         * Adds a widget to the container and sets it at given cell.
+         */
+        LayoutCell &place(int x, int y, gcn::Widget *, int w = 1, int h = 1);
+
+        /**
+         * Returns a proxy for adding widgets in an inner table of the layout.
+         */
+        ContainerPlacer getPlacer(int x, int y);
+
+        /**
+         * Called whenever the managed container changes size.
+         */
+        void widgetResized(const gcn::Event &event);
+
+    private:
+        Layout mLayout;              /**< Layout handler */
+        gcn::Container *mContainer;  /**< Managed container */
+};
+
+#endif // LAYOUTHELPER_H