cairodriver/draw.c

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/*!
   \file lib/cairodriver/draw.c
 
   \brief GRASS cairo display driver
 
   (C) 2007-2008 by Lars Ahlzen, Glynn Clements and the GRASS Development Team
 
   This program is free software under the GNU General Public License
   (>=v2). Read the file COPYING that comes with GRASS for details.
 
   \author Lars Ahlzen <lars ahlzen.com> (original contributor)
   \author Glynn Clements
 */
 
#include "cairodriver.h"
 
void Cairo_Begin(void)
{
    cairo_new_path(cairo);
}
 
void Cairo_Move(double x, double y)
{
    cairo_move_to(cairo, x, y);
}
 
void Cairo_Cont(double x, double y)
{
    cairo_line_to(cairo, x, y);
}
 
void Cairo_Close(void)
{
    cairo_close_path(cairo);
}
 
void Cairo_Stroke(void)
{
    cairo_stroke(cairo);
    ca.modified = 1;
}
 
void Cairo_Fill(void)
{
    cairo_fill(cairo);
    ca.modified = 1;
}
 
void Cairo_Point(double x, double y)
{
    static double point_size = 1.0;
    double half_point_size = point_size / 2;
 
    cairo_new_path(cairo);
    cairo_rectangle(cairo, x - half_point_size, y - half_point_size, point_size,
                    point_size);
    cairo_fill(cairo);
    ca.modified = 1;
}