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include/engine/ui/widget.h

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+/* -----------------------------------------------------------------------------
+	GSFramework
+	Copyright 2001-2013 Emmanuel Julien. All Rights Reserved.
+----------------------------------------------------------------------------- */
+
+
+#ifndef	__NWIDGET__
+#define	__NWIDGET__
+
+
+		#include "ui/ui_event_handler.h"
+		#include "geometry/rect.h"
+		#include "math/vector.h"
+		#include "memory/nshared_ptr.h"
+		#include "memory/nweak_ptr.h"
+
+
+namespace GS {
+	class Picture;
+
+	namespace S2D {
+		class Widget;
+
+		typedef	SharedPtr <Widget> sWidget;
+
+/// Widget type.
+enum	WidgetType
+{
+	WidgetTypeBase			=	0,
+	WidgetTypeSizer,
+	WidgetTypeVSizer,
+	WidgetTypeHSizer,
+	WidgetTypeContainer,
+	WidgetTypeSpacer,
+	WidgetTypeText,
+	WidgetTypeCanvas,
+	WidgetTypeDrawable,
+	WidgetTypeBitmap,
+	WidgetTypeCheck
+};
+
+/*!
+	@short	Base widget.
+	@author	Emmanuel Julien (ejulien@nworks.fr)
+*/
+class	Widget : public SharedObject
+{
+public:
+
+enum	Align
+{
+	AlignNone = 0,
+	AlignLeft,
+	AlignTop,
+	AlignMiddle,
+	AlignRight,
+	AlignBottom,
+	AlignGrow
+};
+
+protected:
+
+		WidgetType		type;
+		Widget			*parent;
+
+		AutoPtr <EventTable> event_table;
+
+		int				object_id;
+		iRect			rect;
+
+		Align			h_align, v_align;
+
+		bool			hidden;					///< Hidden.
+		bool			dirty;					///< Dirty flag.
+
+		Vector4			border_size;			///< Border size in pixel (x->top, y->bottom, z->left, w->right).
+
+		SharedList <Widget *> children;
+
+		Vector2		format;					///< Formatting size.
+
+		/// Setup and align output rectangle.
+		iRect			FormatOutputRect(const iRect &rect, const iRect &out_rect);
+
+public:
+
+		int				GetId() const { return object_id; }
+		WidgetType		GetType() const { return type; }
+
+		void			SetHidden(bool h = true);
+		bool			IsHidden() const { return hidden; }
+		bool			IsDirty() const { return dirty; }
+		
+		void			Validate() { dirty = false; }
+virtual	void			Invalidate();
+
+virtual	void			Refresh() = 0;
+virtual	void			Compose(Picture &output, const iRect &clip_rect) = 0;
+
+		EventTable		*GetEventTable() const { return event_table; }
+
+		void			SetParent(Widget *w);
+		Widget			*GetParent() const { return parent; }
+
+		Widget			*GetChild(int id);
+
+		const SharedList <Widget *> &GetChildren() const { return children; }
+
+		/// Return widget rect in parent window client space.
+		iRect			GetRect() const;
+
+		void			SetBorderSize(float top = 2, float bottom = 2, float left = 2, float right = 2);
+		void			SetHAlign(Align = AlignMiddle);
+		void			SetVAlign(Align = AlignMiddle);
+		void			SetFormattingSize(const Vector2 &);
+
+		/// Get widget formatting size ratio.
+		Vector2			GetFormat() const;
+
+		Widget(int id = -1);
+virtual	~Widget();
+};
+
+	} // S2D
+} // GS
+
+
+#endif	// __NWIDGET__