/**************************************************************************
* Copyright (C) 2008 thierry lorthiois (lorthiois@bbsoft.fr)
*
* base class for all graphical objects (panel, taskbar, task, systray, clock, ...).
* Area is at the begining of each object (&object == &area).
*
* Area manage the background and border drawing, size and padding.
* Each Area have 2 Pixmap (pix and pix_active).
*
* Area manage the tree of all objects. Parent object drawn before child object.
*   panel -> taskbars -> tasks
*         -> systray -> icons
*         -> clock
*
* draw_foreground(obj) and resize(obj) are virtual function.
*
**************************************************************************/

#ifndef AREA_H
#define AREA_H

#include <glib.h>
#include <X11/Xlib.h>
#include <cairo.h>
#include <cairo-xlib.h>


typedef struct
{
	double color[3];
	double alpha;
	int width;
	int rounded;
} Border;


typedef struct
{
	double color[3];
	double alpha;
} Color;


typedef struct
{
	Pixmap pmap;
	Color back;
	Border border;
} Pmap;


typedef struct {
	// coordinate relative to panel window
	int posx, posy;
	// width and height including border
	int width, height;
	Pmap pix;
	Pmap pix_active;

	// list of child : Area object
	GSList *list;

	int on_screen;
	// need compute position and width
	int resize;
	// need redraw Pixmap
	int redraw;
	int use_active, is_active;
	// paddingxlr = horizontal padding left/right
	// paddingx = horizontal padding between childs
	int paddingxlr, paddingx, paddingy;
	// parent Area
	void *parent;
	// panel
	void *panel;

	// each object can overwrite following function
	void (*_draw_foreground)(void *obj, cairo_t *c, int active);
	void (*_resize)(void *obj);
	void (*_add_child)(void *obj);
	int (*_remove_child)(void *obj);
	const char* (*_get_tooltip_text)(void *obj);
} Area;



// draw background and foreground
void refresh (Area *a);

void size (Area *a);

// set 'redraw' on an area and childs
void set_redraw (Area *a);

// draw pixmap and pixmap_active
void draw (Area *a, int active);
void draw_background (Area *a, cairo_t *c, int active);

void remove_area (Area *a);
void add_area (Area *a);
void free_area (Area *a);

// draw rounded rectangle
void draw_rect(cairo_t *c, double x, double y, double w, double h, double r);
#endif