Add a Layout class to automatically position widgets within a Panel

[libs/gltk.git] / source / panel.h

diff --git a/source/panel.h b/source/panel.h
index 748ecb48d508c53c32a7186ede84472c581d7b85..a5483c452c57f7b0d639511878fb8a8ef2f4b8d6 100644 (file)
--- a/source/panel.h
+++ b/source/panel.h
@@ -13,6 +13,8 @@ Distributed under the LGPL
 namespace Msp {
 namespace GLtk {
 
+class Layout;
+
 /**
 Panels are containers for other widgets.  Panel styles should have a special
 part "children" to render the child widgets.  All properties of this part are
@@ -23,12 +25,15 @@ class Panel: public Container
 public:
        class Loader: public Widget::Loader
        {
+       public:
+               typedef std::map<std::string, Widget *> WidgetMap;
+
        private:
                Panel &pnl;
-               std::map<std::string, Widget *> &wdg_map;
+               WidgetMap &wdg_map;
        
        public:
-               Loader(Panel &, std::map<std::string, Widget *> &);
+               Loader(Panel &, WidgetMap &);
        private:
                template<typename T>
                void child(const std::string &);
@@ -42,12 +47,14 @@ protected:
                virtual ~Child();
 
                void visibility_changed(bool);
+               void autosize_changed();
                void request_focus();
                void grab_pointer();
                void ungrab_pointer();
                void raise();
        };
 
+       Layout *layout;
        Widget *pointer_focus;
        bool pointer_grabbed;
        Widget *input_focus;
@@ -56,9 +63,12 @@ protected:
        Panel &operator=(const Panel &);
 public:
        Panel();
+       virtual ~Panel();
 
        virtual const char *get_class() const { return "panel"; }
 
+       void set_layout(Layout *);
+
 protected:
        virtual Child *create_child(Widget *);
 
@@ -78,8 +88,10 @@ public:
        virtual void key_press(unsigned, unsigned, wchar_t);
        virtual void key_release(unsigned, unsigned);
        virtual void focus_out();
-
 protected:
+       virtual void on_child_added(Widget &);
+       virtual void on_child_removed(Widget &);
+
        void set_pointer_focus(Widget *);
        void set_input_focus(Widget *);
 };