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/* -*- mode: C; indent-tabs-mode: t; tab-width: 8; c-basic-offset: 2; -*- */
/*
* This file is part of Seed, the GObject Introspection<->Javascript bindings.
*
* Seed is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2 of
* the License, or (at your option) any later version.
* Seed is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License
* along with Seed. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright (C) Robert Carr 2009 <carrr@rpi.edu>
*/
#include <seed.h>
#include <cairo/cairo.h>
#include "seed-cairo.h"
#include "seed-cairo-matrix.h"
#define CAIRO_PATTERN_PRIV(obj) ((cairo_pattern_t *)seed_object_get_private(obj))
#define CHECK_PATTERN(obj, res) ({ \
if (!seed_object_is_of_class (ctx, obj, seed_cairo_pattern_class)){ \
seed_make_exception (ctx, exception, "ArgumentError", "Object is not a Cairo Pattern"); \
return seed_make_##res (ctx); \
} \
if (!seed_object_get_private (obj)){ \
seed_make_exception (ctx, exception, "ArgumentError", "Cairo pattern has been destroyed"); \
return seed_make_##res (ctx);}})
#define CHECK_THIS() if (!seed_object_get_private (this_object)){ \
seed_make_exception (ctx, exception, "ArgumentError", "Cairo pattern has been destroyed"); \
return seed_make_undefined (ctx);}
#define CHECK_THIS_BOOL(res) if (!seed_object_get_private (this_object)){ \
seed_make_exception (ctx, exception, "ArgumentError", "Cairo pattern has been destroyed"); return FALSE;}
SeedClass seed_cairo_pattern_class;
SeedClass
seed_get_cairo_pattern_class ()
{
return seed_cairo_pattern_class;
}
static void
seed_cairo_pattern_finalize (SeedObject obj)
{
cairo_pattern_t *s = CAIRO_PATTERN_PRIV(obj);
if (s)
{
cairo_pattern_set_user_data (s, seed_get_cairo_key(), NULL, NULL);
cairo_pattern_destroy (s);
}
}
cairo_pattern_t *
seed_object_to_cairo_pattern (SeedContext ctx, SeedObject obj, SeedException *exception)
{
if (seed_object_is_of_class (ctx, obj, seed_cairo_pattern_class))
return CAIRO_PATTERN_PRIV (obj);
seed_make_exception (ctx, exception, "ArgumentError", "Object is not a Cairo Pattern");
return NULL;
}
SeedObject
seed_object_from_cairo_pattern (SeedContext ctx, cairo_pattern_t *pat)
{
SeedObject jsobj;
jsobj = cairo_pattern_get_user_data (pat, seed_get_cairo_key());
if (jsobj)
return jsobj;
jsobj = seed_make_object (ctx, seed_cairo_pattern_class, pat);
cairo_pattern_set_user_data (pat, seed_get_cairo_key(), jsobj, seed_cairo_destroy_func);
return jsobj;
}
static SeedObject
seed_cairo_construct_linear_gradient (SeedContext ctx,
SeedObject constructor,
size_t argument_count,
const SeedValue arguments[],
SeedException * exception)
{
gdouble x0,y0,x1,y1;
if (argument_count != 4)
{
EXPECTED_EXCEPTION("LinearGradient constructor", "4 arguments");
}
x0 = seed_value_to_double (ctx, arguments[0], exception);
y0 = seed_value_to_double (ctx, arguments[1], exception);
x1 = seed_value_to_double (ctx, arguments[2], exception);
y1 = seed_value_to_double (ctx, arguments[3], exception);
return seed_object_from_cairo_pattern (ctx, cairo_pattern_create_linear (x0, y0, x1, y1));
}
static SeedObject
seed_cairo_construct_radial_gradient (SeedContext ctx,
SeedObject constructor,
size_t argument_count,
const SeedValue arguments[],
SeedException * exception)
{
gdouble cx0, cy0, r0, cx1, cy1, r1;
if (argument_count != 6)
{
EXPECTED_EXCEPTION("RadialGradient constructor", "6 arguments");
}
cx0 = seed_value_to_double (ctx, arguments[0], exception);
cy0 = seed_value_to_double (ctx, arguments[1], exception);
r0 = seed_value_to_double (ctx, arguments[2], exception);
cx1 = seed_value_to_double (ctx, arguments[3], exception);
cy1 = seed_value_to_double (ctx, arguments[4], exception);
r1 = seed_value_to_double (ctx, arguments[5], exception);
return seed_object_from_cairo_pattern (ctx, cairo_pattern_create_radial (cx0, cy0, r0, cx1, cy1, r1));
}
static SeedValue
seed_cairo_pattern_add_color_stop_rgb (SeedContext ctx,
SeedObject function,
SeedObject this_object,
gsize argument_count,
const SeedValue arguments[],
SeedException *exception)
{
gdouble offset, r, g, b;
cairo_pattern_t *pat;
CHECK_THIS();
if (argument_count != 4)
{
EXPECTED_EXCEPTION("add_color_stop_rgb", "4 arguments");
}
pat = seed_object_get_private (this_object);
offset = seed_value_to_double (ctx, arguments[0], exception);
r = seed_value_to_double (ctx, arguments[1], exception);
g = seed_value_to_double (ctx, arguments[2], exception);
b = seed_value_to_double (ctx, arguments[3], exception);
cairo_pattern_add_color_stop_rgb (pat, offset, r, g, b);
return seed_make_undefined (ctx);
}
static SeedValue
seed_cairo_pattern_add_color_stop_rgba (SeedContext ctx,
SeedObject function,
SeedObject this_object,
gsize argument_count,
const SeedValue arguments[],
SeedException *exception)
{
gdouble offset, r, g, b, a;
cairo_pattern_t *pat;
CHECK_THIS();
if (argument_count != 5)
{
EXPECTED_EXCEPTION("add_color_stop_rgba", "5 arguments");
}
pat = seed_object_get_private (this_object);
offset = seed_value_to_double (ctx, arguments[0], exception);
r = seed_value_to_double (ctx, arguments[1], exception);
g = seed_value_to_double (ctx, arguments[2], exception);
b = seed_value_to_double (ctx, arguments[3], exception);
a = seed_value_to_double (ctx, arguments[4], exception);
cairo_pattern_add_color_stop_rgba (pat, offset, r, g, b, a);
return seed_make_undefined (ctx);
}
seed_static_function pattern_funcs[] = {
{"add_color_stop_rgb", seed_cairo_pattern_add_color_stop_rgb, 0},
{"add_color_stop_rgba", seed_cairo_pattern_add_color_stop_rgba, 0},
{0,0,0}
};
void
seed_define_cairo_pattern (SeedContext ctx,
SeedObject namespace_ref)
{
SeedObject linear_constructor, radial_constructor;
seed_class_definition pattern_def = seed_empty_class;
pattern_def.class_name = "Pattern";
pattern_def.finalize = seed_cairo_pattern_finalize;
pattern_def.static_functions = pattern_funcs;
seed_cairo_pattern_class = seed_create_class (&pattern_def);
linear_constructor = seed_make_constructor (ctx, NULL, seed_cairo_construct_linear_gradient);
seed_object_set_property(ctx, namespace_ref, "LinearGradient", linear_constructor);
radial_constructor = seed_make_constructor (ctx, NULL, seed_cairo_construct_radial_gradient);
seed_object_set_property(ctx, namespace_ref, "RadialGradient", radial_constructor);
}
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