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 1082447bc58fdddaf77f660d5876e326a5a82616..a5483c452c57f7b0d639511878fb8a8ef2f4b8d6 100644 (file)
--- a/source/panel.h
+++ b/source/panel.h
@@ -1,7 +1,7 @@
 /* $Id$
 
 This file is part of libmspgltk
-Copyright © 2007-2009  Mikko Rasa, Mikkosoft Productions
+Copyright © 2007-2011  Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
 
@@ -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;
@@ -55,12 +62,25 @@ protected:
        Panel(const Panel &);
        Panel &operator=(const Panel &);
 public:
-       Panel(const Resources &);
+       Panel();
+       virtual ~Panel();
+
+       virtual const char *get_class() const { return "panel"; }
+
+       void set_layout(Layout *);
+
+protected:
+       virtual Child *create_child(Widget *);
 
+public:
        void raise(Widget &);
        Widget *get_input_focus() const { return input_focus; }
        Widget *get_final_input_focus() const;
 
+protected:
+       virtual void render_special(const Part &) const;
+
+public:
        virtual void button_press(int, int, unsigned);
        virtual void button_release(int, int, unsigned);
        virtual void pointer_motion(int, int);
@@ -69,9 +89,8 @@ public:
        virtual void key_release(unsigned, unsigned);
        virtual void focus_out();
 protected:
-       virtual const char *get_class() const { return "panel"; }
-       virtual void render_special(const Part &) const;
-       virtual Child *create_child(Widget *);
+       virtual void on_child_added(Widget &);
+       virtual void on_child_removed(Widget &);
 
        void set_pointer_focus(Widget *);
        void set_input_focus(Widget *);