X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fwidget.h;h=6cb3d0654362f60142e4d083561291879713a7c8;hb=2e3bb9608ef4c74a8ba9c101ba24b68285405090;hp=322fbfa8a53f0b052ce94c45ab5fed847c7a6837;hpb=c062ca892fc6e10f74a76991b5d4b4349c046b5f;p=libs%2Fgltk.git

diff --git a/source/widget.h b/source/widget.h
index 322fbfa..6cb3d06 100644
--- a/source/widget.h
+++ b/source/widget.h
@@ -2,44 +2,146 @@
 #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;
-	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() { }
+	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;
+	PartCache part_cache;
 
-	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);
+	void autosize();
+protected:
+	virtual void autosize_special(const Part &, Geometry &) { }
+public:
+	void set_geometry(const Geometry &);
+	const Geometry &get_geometry() const { return geom; }
+
+	void map_coords_to_ancestor(int &, int &, const Widget &) const;
+
+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; }
+
+	/** Finds the closest ancestor of a specific type. */
+	template<typename T>
+	T *find_ancestor() const
+	{
+		for(Widget *w=parent; w; w=w->get_parent())
+			if(T *tw = dynamic_cast<T *>(w))
+				return tw;
+		return 0;
+	}
+
+	/** Sets the widget style.  The name of the resource to be looked up 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;
+
+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();
+	void set_enabled(bool);
+	bool is_enabled() const { return !(state&DISABLED); }
+
+protected:
+	void set_state(State s) { set_state(s, s); }
+	void clear_state(State s) { set_state(s, NORMAL); }
+	void set_state(State, State);
+public:
+	State get_state() const { return state; }
+
+protected:
+	void rebuild();
+	virtual void rebuild_special(const Part &);
+
+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