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 397d71fc3974adac96bedec9763a32e283141d24..a5483c452c57f7b0d639511878fb8a8ef2f4b8d6 100644 (file)
--- a/source/panel.h
+++ b/source/panel.h
@@ -1,57 +1,86 @@
 /* $Id$
 
 This file is part of libmspgltk
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
+Copyright © 2007-2011  Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
 
 #ifndef MSP_GLTK_PANEL_H_
 #define MSP_GLTK_PANEL_H_
 
-#include "widget.h"
+#include "container.h"
 
 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
 ignored.
 */
-class Panel: public Widget
+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 &);
                void panel(const std::string &);
        };
 
-private:
-       std::list<Widget *> children;
+protected:
+       struct Child: public Container::Child
+       {
+               Child(Panel &, Widget *);
+               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;
-       unsigned pointer_grab;
+       bool pointer_grabbed;
        Widget *input_focus;
 
        Panel(const Panel &);
        Panel &operator=(const Panel &);
 public:
-       Panel(const Resources &);
-       ~Panel();
+       Panel();
+       virtual ~Panel();
+
+       virtual const char *get_class() const { return "panel"; }
 
-       void add(Widget &);
-       void remove(Widget &);
+       void set_layout(Layout *);
+
+protected:
+       virtual Child *create_child(Widget *);
+
+public:
        void raise(Widget &);
-       void set_focus(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);
@@ -59,19 +88,12 @@ 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 &);
 
-       // These functions are not intended to be called from outside GLtk
-       void child_hidden(Widget &);
-       void grab_pointer(Widget &);
-       void ungrab_pointer(Widget &);
-       void grab_focus(Widget &);
-private:
-       virtual const char *get_class() const { return "panel"; }
-       virtual void render_special(const Part &) const;
-
-       void set_pointer_focus(Widget *, int);
+       void set_pointer_focus(Widget *);
        void set_input_focus(Widget *);
-       Widget *get_child_at(int, int);
 };
 
 } // namespace GLtk