New Layer System

1 files changed, 201 insertions, 0 deletions

diff --git a/src/FbTk/Layer.hh b/src/FbTk/Layer.hh
new file mode 100644
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+++ b/src/FbTk/Layer.hh
@@ -0,0 +1,201 @@
+// Layer.hh for FbTk - fluxbox toolkit
+// Copyright (c) 2003 Henrik Kinnunen (fluxgen at users.sourceforge.net)
+//                and Simon Bowden    (rathnor at users.sourceforge.net)
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+// $Id: Layer.hh,v 1.1 2003/01/16 12:41:27 rathnor Exp $
+
+#ifndef FBTK_LAYERTEMPLATE_HH
+#define FBTK_LAYERTEMPLATE_HH
+
+/*#include "Layer.hh"*/
+#include <vector>
+#include <algorithm>
+#include <iostream>
+
+namespace FbTk {
+
+template <typename ItemType, typename Container = std::vector<ItemType *> >
+class Layer {
+public:
+    typedef Container ListType;
+    typedef typename Container::iterator iterator;
+    typedef typename Container::reverse_iterator reverse_iterator;
+    virtual ~Layer() { }
+    /// insert in top by default
+    virtual iterator insert(ItemType &item, unsigned int pos=0);
+    /// remove item from list
+    virtual void remove(ItemType &item);
+    /// cycle all item upwards
+    virtual void cycleUp();
+    /// cycle all items downwards
+    virtual void cycleDown();
+    /// move item to top
+    virtual void raise(ItemType &item);
+    /// move item to bottom
+    virtual void lower(ItemType &item);
+    /// raise a specific item one step
+    virtual void stepUp(ItemType &item);
+    /// lower a specific item one step
+    virtual void stepDown(ItemType &item);
+    virtual void restack();
+    /// @return layer item on specific position, on failure 0
+    ItemType *getItem(unsigned int position);
+    /// @return number of elements in layer
+    unsigned int size() const { return m_list.size(); }
+    /// @return layer list
+    const ListType &itemList() const { return m_list; }
+    /// @return layer list
+    ListType &itemList() { return m_list; }
+private:
+    ListType m_list;
+};
+
+template <typename ItemType, typename Container>
+typename Container::iterator Layer<ItemType, Container>::insert(ItemType &item, unsigned int position) {
+    // make sure we don't alreay have it in the list
+    if (std::find(itemList().begin(), itemList().end(), &item) != itemList().end())
+        return m_list.end();
+
+    if (position > size())
+        position = size();
+
+    iterator it = m_list.begin();
+
+    for (unsigned int i=0; i<position; ++it, ++i)
+        continue;
+
+    m_list.insert(it, &item);
+    restack();
+    return it++;
+}
+
+
+template <typename ItemType, typename Container>
+void Layer<ItemType, Container>::remove(ItemType &item) {
+    iterator it = std::find(itemList().begin(), itemList().end(), &item);
+    if (it != itemList().end())
+        m_list.erase(it);
+}
+
+template <typename ItemType, typename Container>
+void Layer<ItemType, Container>::cycleUp() {
+    if (size() == 0)
+        return;
+    iterator it = itemList().begin();
+    it++;
+    rotate(itemList().begin(), it, itemList().end());
+    restack();
+}
+
+
+template <typename ItemType, typename Container>
+void Layer<ItemType, Container>::cycleDown() {
+    if (size() == 0)
+        return;
+    // save last item and remove it from list
+    ItemType *last_item = itemList().back();
+    itemList().pop_back();
+    // add last item to front
+    itemList().insert(itemList().begin(), last_item);
+    restack();
+}
+
+template <typename ItemType, typename Container>
+void Layer<ItemType, Container>::stepUp(ItemType &item) {
+    iterator it = 
+        find(itemList().begin(), itemList().end(), &item);
+             
+    if (it == itemList().end())
+        return;
+
+    if (it == itemList().begin()) // we can't raise it more
+        return;
+
+    iterator new_pos = it;
+    new_pos--;
+    ItemType *textitem = *it;
+    // remove item from list    
+    itemList().erase(it);
+    // insert above last pos
+    itemList().insert(new_pos, textitem);
+    restack();
+}
+
+template <typename ItemType, typename Container>
+void Layer<ItemType, Container>::stepDown(ItemType &item) {
+    iterator it = 
+        find(itemList().begin(), itemList().end(), &item);
+             
+    if (it == itemList().end()) // we didn't find the item in our list
+        return;
+
+    if (*it == itemList().back()) // it's already at the bottom
+        return;
+
+    iterator new_pos = it;
+    new_pos++;
+    ItemType *textitem = *it;
+    // remove from list
+    itemList().erase(it); 
+    // insert on the new place
+    itemList().insert(new_pos, textitem);
+    restack();
+}
+template <typename ItemType, typename Container>
+void Layer<ItemType, Container>::raise(ItemType &item) {
+    if (&item == itemList().front()) // already at the bottom
+        return;
+    remove(item);
+    insert(item, 0);
+    restack();
+}
+
+template <typename ItemType, typename Container>
+void Layer<ItemType, Container>::lower(ItemType &item) {
+    if (&item == itemList().back()) // already at the bottom
+        return;
+    remove(item);
+    insert(item, size());
+    restack();
+}
+
+template <typename ItemType, typename Container>
+ItemType *Layer<ItemType, Container>::getItem(unsigned int position) {
+    if (position >= m_list.size())
+        return 0;
+    iterator it = m_list.begin();
+    iterator it_end = m_list.end();
+    for (unsigned int i=0; i < position && it != it_end; i++);
+        
+    if (it == it_end) return 0;
+    else 
+        return *it;
+}
+
+template <typename ItemType, typename Container>
+void Layer<ItemType, Container>::restack() {
+}
+
+
+}; // end namespace FbTk
+
+
+#endif // FBTK_LAYERTEMPLATE_HH