+/* $Id$
+
+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_
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() { }
- void set_position(int, int);
- void set_size(unsigned, unsigned);
- void set_geometry(const Geometry &);
- void set_style(const std::string &);
- const Geometry &get_geometry() const { return geom; }
- void render() const;
- bool button_press(int, int, unsigned);
- bool button_release(int, int, unsigned);
- bool pointer_motion(int, int);
+ 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 &);
- virtual const char *get_class() const { return "widget"; }
- void update_style();
- virtual void render_part(const Part &) const;
+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 &);
+
+ void set_visible(bool);
+
+ 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 on_button_press(int, int, unsigned) { }
- virtual void on_button_release(int, int, unsigned) { }
- virtual void on_pointer_motion(int, int, unsigned) { }
- virtual void on_pointer_enter() { }
- virtual void on_pointer_leave() { }
+ 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 key_press(unsigned, unsigned, wchar_t) { }
+ virtual void key_release(unsigned, unsigned) { }
+ virtual void focus_in();
+ virtual void focus_out();
+
+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();
+
+ /**
+ 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