/*	Public domain	*/

#ifndef _FREESG_SK_SK_VIEW_H_
#define _FREESG_SK_SK_VIEW_H_
#include <freesg/sk/begin.h>

#include <freesg/sk/sk_tool.h>

struct sk;
struct sk_point;
struct ag_pane;

typedef struct sk_view {
	struct ag_glview _inherit;

	Uint flags;
#define SK_VIEW_HFILL	0x01
#define SK_VIEW_VFILL	0x02
#define SK_VIEW_EXPAND	(SK_VIEW_HFILL|SK_VIEW_VFILL)

	struct sk *sk;				/* Sketch object */
	M_Matrix44 mView;			/* Viewing matrix */
	M_Matrix44 mProj;			/* Projection matrix */
	M_Real wPixel, hPixel;			/* Display pixel ratio */

	AG_Event *scale_ev;			/* Scaling/movement event */
	AG_Event *keydown_ev, *keyup_ev;	/* Keyboard events */
	AG_Event *btndown_ev, *btnup_ev;	/* Mouse button events */
	AG_Event *motion_ev;			/* Mouse motion event */

	char status[128];			/* Status text buffer */
	struct {
		M_Vector3 last;			/* Last coordinates */
		int panning;			/* Panning mode */
	} mouse;
	SK_Tool *curtool;			/* Selected tool */
	SK_Tool *deftool;			/* Default tool if any */
	AG_PopupMenu *popup;			/* Popup menu for context */
	struct ag_pane *editPane;		/* Edition pane */
	struct ag_pane *viewPane;		/* Visualization pane */
	struct ag_widget *editBox;		/* Widget container */
	M_Real rSnap;				/* Snapping radius */
	AG_TAILQ_HEAD(, sk_tool) tools;		/* Sketching tools */
	AG_Tbl tblNodeData;			/* Per-node data */
} SK_View;

#define SKVIEW(p) ((SK_View *)(p))
#define SK_VIEW_X(skv,px) ((M_Real)(px - WIDGET(skv)->w/2)) / \
                          ((M_Real)WIDGET(skv)->w/2.0)
#define SK_VIEW_Y(skv,py) ((M_Real)(py - WIDGET(skv)->h/2)) / \
                          ((M_Real)WIDGET(skv)->h/2.0)
#define SK_VIEW_X_SNAP(skv,px) (px)
#define SK_VIEW_Y_SNAP(skv,py) (py)
#define SK_VIEW_SCALE_X(skv) (skv)->mView.m[0][0]
#define SK_VIEW_SCALE_Y(skv) (skv)->mView.m[1][1]

__BEGIN_DECLS
extern AG_WidgetClass skViewClass;

SK_View	  *SK_ViewNew(void *, struct sk *, Uint);
void	   SK_ViewZoom(SK_View *, M_Real);

void	   SK_ViewSelectTool(SK_View *, SK_Tool *, void *);
SK_Tool	  *SK_ViewFindTool(SK_View *, const char *);
SK_Tool	  *SK_ViewFindToolByOps(SK_View *, const SK_ToolOps *);
SK_Tool	  *SK_ViewRegTool(SK_View *, const SK_ToolOps *, void *);
void	   SK_ViewSetDefaultTool(SK_View *, SK_Tool *);
void	   SK_ViewPopupMenu(SK_View *);
void	   SK_ViewClearEditPane(SK_View *);
void	   SK_ViewSetEditPane(SK_View *, struct ag_pane *);
void	   SK_ViewSetViewPane(SK_View *, struct ag_pane *);
void	   SK_ViewResizePanes(SK_View *);

struct sk_point *SK_ViewOverPoint(SK_View *, M_Vector3 *, M_Vector3 *, void *);
void            *SK_ViewGetNodeData(SK_View *, void *);
void             SK_ViewSetNodeData(SK_View *, void *, void *);
__END_DECLS

#include <freesg/sk/close.h>
#endif /* _FREESG_SK_SK_VIEW_H_ */