Make the List in Dropdown a normal member instead of pointer

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

diff --git a/source/widget.h b/source/widget.h
index 47bc41096de58db1b43ada855d63875c83103ea1..8cf67d439b7c7e2a27c2b360623d21b5aa607751 100644 (file)
--- a/source/widget.h
+++ b/source/widget.h
@@ -1,3 +1,10 @@
+/* $Id$
+
+This file is part of libmspgltk
+Copyright © 2007  Mikko Rasa, Mikkosoft Productions
+Distributed under the LGPL
+*/
+
 #ifndef MSP_GLTK_WIDGET_H_
 #define MSP_GLTK_WIDGET_H_
 
@@ -8,42 +15,106 @@
 namespace Msp {
 namespace GLtk {
 
+class Panel;
 class Part;
 class Resources;
 class Style;
 
+/**
+Base class for all widgets.  Derived classes should call update_style in 
+constructor, because it can't be done correctly in the Widget constructor.
+*/
 class Widget
 {
 public:
-       virtual ~Widget() { }
+       class Loader: public Msp::DataFile::Loader
+       {
+       protected:
+               Widget &wdg;
+
+       public:
+               Loader(Widget &);
+               Widget &get_object() const { return wdg; }
+       private:
+               void position(int, int);
+               void size(unsigned, unsigned);
+               void style(const std::string &);
+       };
+
+protected:
+       const Resources &res;
+       Geometry geom;
+       std::string style_name;
+       const Style *style;
+       State state;
+       bool visible;
+       Panel *parent;
+
+       Widget(const Resources &);
+public:
+       virtual ~Widget();
        void set_position(int, int);
        void set_size(unsigned, unsigned);
        void set_geometry(const Geometry &);
+
+       /**
+       Sets the widget style.  The final style name is constructed by concatenating
+       the widget class and the style name with a dash.
+       */
        void set_style(const std::string &);
+       const Style &get_style() const { return *style; }
+
+       void set_visible(bool);
+       void set_focus();
+
        const Geometry &get_geometry() const { return geom; }
+       bool is_visible() const { return visible; }
+
        void render() const;
+protected:
+       void render_graphic(const Part &) const;
+       void render_text(const Part &, const std::string &) const;
+       virtual void render_special(const Part &) const { }
+
+public:
+       // Events
        virtual void button_press(int, int, unsigned) { }
        virtual void button_release(int, int, unsigned) { }
        virtual void pointer_motion(int, int) { }
-       virtual void pointer_enter() { }
-       virtual void pointer_leave() { }
+       virtual void pointer_enter();
+       virtual void pointer_leave();
        virtual void key_press(unsigned, unsigned, wchar_t) { }
        virtual void key_release(unsigned, unsigned) { }
-       virtual void focus_in() { }
-       virtual void focus_out() { }
-protected:
-       const Resources &res;
-       Geometry geom;
-       std::string style_name;
-       const Style *style;
-       State state;
+       virtual void focus_in();
+       virtual void focus_out();
 
-       Widget(const Resources &);
+protected:
+       /**
+       Returns the name of the widget class.  Used for style lookup.
+       */
        virtual const char *get_class() const { return "widget"; }
+
+       /**
+       Gets a style object from the resource collection based on the class and
+       style names of the widget.
+       */
        void update_style();
-       virtual void render_part(const Part &) const;
-       void render_graphic(const Part &) const;
-       void render_text(const Part &, const std::string &) const;
+
+       /**
+       Sets the widget's parent Panel.  The widget must be unparented when calling
+       this function with a nonzero parameter.
+       */
+       void set_parent(Panel *);
+
+       /**
+       A helper function to set the parent of another widget.
+       */
+       void set_parent(Widget &, Panel *);
+
+       // More events
+       virtual void on_geometry_change() { }
+       virtual void on_style_change() { }
+       virtual void on_reparent() { }
 };
 
 } // namespace GLtk