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 7a94dcd0fdb5f02f8778afaebf1c6b298a2de418..a5483c452c57f7b0d639511878fb8a8ef2f4b8d6 100644 (file)
--- a/source/panel.h
+++ b/source/panel.h
@@ -1,28 +1,99 @@
+/* $Id$
+
+This file is part of libmspgltk
+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 Panel: public Widget
+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 Container
 {
 public:
-       Panel(const Resources &);
-       ~Panel();
-       void add(Widget &);
-private:
-       typedef std::list<Widget *> ChildSeq;
+       class Loader: public Widget::Loader
+       {
+       public:
+               typedef std::map<std::string, Widget *> WidgetMap;
+
+       private:
+               Panel &pnl;
+               WidgetMap &wdg_map;
+       
+       public:
+               Loader(Panel &, WidgetMap &);
+       private:
+               template<typename T>
+               void child(const std::string &);
+               void panel(const std::string &);
+       };
 
-       ChildSeq 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;
+       bool pointer_grabbed;
+       Widget *input_focus;
 
        Panel(const Panel &);
        Panel &operator=(const Panel &);
-       const char *get_class() const { return "panel"; }
-       void render_part(const Part &) const;
-       void on_button_press(int, int, unsigned);
-       void on_button_release(int, int, unsigned);
+public:
+       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);
+       virtual void pointer_leave();
+       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 *);
 };
 
 } // namespace GLtk