#define MSP_GLTK_WIDGET_H_
#include <string>
+#include <msp/datafile/objectloader.h>
+#include <msp/gl/renderer.h>
#include "geometry.h"
+#include "partcache.h"
#include "state.h"
namespace Msp {
namespace GLtk {
+class Container;
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
{
+ friend class Container;
+
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 DataFile::ObjectLoader<Widget>
+ {
+ public:
+ Loader(Widget &);
+ private:
+ void position(int, int);
+ void size(unsigned, unsigned);
+ void style(const std::string &);
+ };
+
+ sigc::signal<void, bool> signal_visibility_changed;
+ sigc::signal<void> signal_autosize_changed;
+ sigc::signal<void> signal_request_focus;
+ sigc::signal<void> signal_grab_pointer;
+ sigc::signal<void> signal_ungrab_pointer;
+
protected:
- const Resources &res;
Geometry geom;
std::string style_name;
const Style *style;
State state;
+ bool visible;
+ bool focusable;
+ Container *parent;
+ std::string tooltip;
+ std::list<CachedPart> cached_parts;
- Widget(const Resources &);
+ Widget();
+public:
+ virtual ~Widget();
+
+ /**
+ Returns the name of the widget class. Used for style lookup.
+ */
virtual const char *get_class() const { return "widget"; }
+
+ void set_position(int, int);
+ void set_size(unsigned, unsigned);
+ virtual void autosize();
+ void set_geometry(const Geometry &);
+ const Geometry &get_geometry() const { return geom; }
+
+protected:
+ /**
+ Sets the widget's parent Container. The widget must be unparented when
+ calling this function with a non-null parameter.
+ */
+ void set_parent(Container *);
+public:
+ Container *get_parent() const { return parent; }
+
+ /**
+ 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; }
+
+protected:
+ /**
+ 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;
- 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() { }
+
+public:
+ void set_tooltip(const std::string &);
+ const std::string &get_tooltip() const { return tooltip; }
+
+ void set_visible(bool);
+ bool is_visible() const { return visible; }
+ void set_focusable(bool);
+ bool is_focusable() const { return focusable; }
+ void set_focus();
+
+protected:
+ void set_state(State s) { set_state(s, s); }
+ void clear_state(State s) { set_state(s, NORMAL); }
+ void set_state(State, State);
+
+ void rebuild();
+ virtual void rebuild_special(const Part &, CachedPart &) { }
+
+public:
+ void render(GL::Renderer &) const;
+protected:
+ virtual void render_special(const Part &, GL::Renderer &) 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) { }
+ virtual void key_release(unsigned, unsigned) { }
+ virtual void character(wchar_t) { }
+ virtual void focus_in();
+ virtual void focus_out();
+protected:
+ virtual void on_geometry_change() { }
+ virtual void on_style_change() { }
+ virtual void on_reparent() { }
};
} // namespace GLtk