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/* -*- c-file-style: "gnu"; indent-tabs-mode: nil -*- */
/*
* Ruby Cairo Binding
*
* Copyright 2010-2022 Sutou Kouhei <kou@cozmixng.org>
*
* This file is made available under the same terms as Ruby
*
*/
#include "rb_cairo.h"
#include "rb_cairo_private.h"
VALUE rb_cCairo_Region = Qnil;
#if CAIRO_CHECK_VERSION(1, 10, 0)
#define _SELF (RVAL2CRREGION(self))
static void
cr_region_free (void *ptr)
{
cairo_region_destroy ((cairo_region_t *) ptr);
}
static const rb_data_type_t cr_region_type = {
"Cairo::Region",
{
NULL,
cr_region_free,
},
NULL,
NULL,
RUBY_TYPED_FREE_IMMEDIATELY,
};
static inline void
cr_region_check_status (cairo_region_t *region)
{
rb_cairo_check_status (cairo_region_status (region));
}
cairo_region_t *
rb_cairo_region_from_ruby_object (VALUE obj)
{
cairo_region_t *region;
if (!rb_cairo__is_kind_of (obj, rb_cCairo_Region))
{
rb_raise (rb_eTypeError, "not a cairo region");
}
TypedData_Get_Struct (obj, cairo_region_t, &cr_region_type, region);
return region;
}
VALUE
rb_cairo_region_to_ruby_object (cairo_region_t *region)
{
if (region)
{
cairo_region_reference (region);
return TypedData_Wrap_Struct (rb_cCairo_Region, &cr_region_type, region);
}
else
{
return Qnil;
}
}
static VALUE
cr_region_allocate (VALUE klass)
{
return TypedData_Wrap_Struct (klass, &cr_region_type, NULL);
}
static VALUE
cr_region_initialize (int argc, VALUE *argv, VALUE self)
{
cairo_region_t *region;
if (argc == 0)
{
region = cairo_region_create ();
}
else
{
int i;
cairo_rectangle_int_t *rectangles;
rectangles = ALLOCA_N (cairo_rectangle_int_t, argc);
for (i = 0; i < argc; i++)
{
VALUE rb_rectangle;
rb_rectangle = rb_check_array_type (argv[i]);
if (RARRAY_LEN (rb_rectangle) != 4)
rb_raise (rb_eArgError,
"invalid argument (expect "
"() or ([x, y, width, height], ...): %s",
rb_cairo__inspect (rb_ary_new4 (argc, argv)));
rectangles[i].x = NUM2INT (RARRAY_PTR (rb_rectangle)[0]);
rectangles[i].y = NUM2INT (RARRAY_PTR (rb_rectangle)[1]);
rectangles[i].width = NUM2INT (RARRAY_PTR (rb_rectangle)[2]);
rectangles[i].height = NUM2INT (RARRAY_PTR (rb_rectangle)[3]);
}
region = cairo_region_create_rectangles (rectangles, argc);
}
cr_region_check_status (region);
RTYPEDDATA_DATA (self) = region;
return Qnil;
}
static VALUE
cr_region_dup (VALUE self)
{
cairo_region_t *copied_region;
VALUE rb_copied_region;
copied_region = cairo_region_copy (_SELF);
cr_region_check_status (copied_region);
rb_copied_region = CRREGION2RVAL (copied_region);
cairo_region_destroy (copied_region);
return rb_copied_region;
}
static VALUE
cr_region_equal (VALUE self, VALUE other)
{
cairo_region_t *region, *other_region;
if (!rb_cairo__is_kind_of (other, rb_cCairo_Region))
return Qfalse;
region = _SELF;
other_region = RVAL2CRREGION (other);
return CBOOL2RVAL (cairo_region_equal (region, other_region));
}
static VALUE
cr_region_get_extents (VALUE self)
{
cairo_region_t *region;
cairo_rectangle_int_t extents;
region = _SELF;
cairo_region_get_extents (region, &extents);
cr_region_check_status (region);
return rb_ary_new3 (4,
INT2NUM (extents.x), INT2NUM (extents.y),
INT2NUM (extents.width), INT2NUM (extents.height));
}
static VALUE
cr_region_num_rectangles (VALUE self)
{
cairo_region_t *region;
int num_rectangles;
region = _SELF;
num_rectangles = cairo_region_num_rectangles (region);
cr_region_check_status (region);
return INT2NUM (num_rectangles);
}
static VALUE
cr_region_get_rectangle (VALUE self, VALUE index)
{
cairo_region_t *region;
cairo_rectangle_int_t extents;
region = _SELF;
cairo_region_get_rectangle (region, NUM2INT (index), &extents);
cr_region_check_status (region);
return rb_ary_new3 (4,
INT2NUM (extents.x), INT2NUM (extents.y),
INT2NUM (extents.width), INT2NUM (extents.height));
}
static VALUE
cr_region_is_empty (VALUE self)
{
return CBOOL2RVAL (cairo_region_is_empty (_SELF));
}
static VALUE
cr_region_containts_rectangle (int argc, VALUE *argv, VALUE self)
{
cairo_region_t *region;
cairo_rectangle_int_t rectangle;
cairo_region_overlap_t overlap;
VALUE arg1, arg2, arg3, arg4;
const char *error_message =
"invalid argument (expect "
"(x, y, width, height) or ([x, y, width, height])): %s";
rb_scan_args (argc, argv, "13", &arg1, &arg2, &arg3, &arg4);
region = _SELF;
if (argc == 1)
{
VALUE rb_rectangle;
rb_rectangle = rb_check_array_type (arg1);
if (RARRAY_LEN (rb_rectangle) != 4)
rb_raise (rb_eArgError, error_message,
rb_cairo__inspect (rb_ary_new4 (argc, argv)));
rectangle.x = NUM2INT (RARRAY_PTR (rb_rectangle)[0]);
rectangle.y = NUM2INT (RARRAY_PTR (rb_rectangle)[1]);
rectangle.width = NUM2INT (RARRAY_PTR (rb_rectangle)[2]);
rectangle.height = NUM2INT (RARRAY_PTR (rb_rectangle)[3]);
}
else if (argc == 4)
{
rectangle.x = NUM2INT (arg1);
rectangle.y = NUM2INT (arg2);
rectangle.width = NUM2INT (arg3);
rectangle.height = NUM2INT (arg4);
}
else
{
rb_raise (rb_eArgError, error_message,
rb_cairo__inspect (rb_ary_new4 (argc, argv)));
}
overlap = cairo_region_contains_rectangle (region, &rectangle);
cr_region_check_status (region);
return INT2NUM (overlap);
}
static VALUE
cr_region_containts_point (int argc, VALUE *argv, VALUE self)
{
cairo_region_t *region;
int x, y;
VALUE arg1, arg2;
const char *error_message =
"invalid argument (expect "
"(x, y) or ([x, y])): %s";
rb_scan_args (argc, argv, "11", &arg1, &arg2);
region = _SELF;
if (argc == 1)
{
VALUE point;
point = rb_check_array_type (arg1);
if (RARRAY_LEN (point) != 4)
rb_raise (rb_eArgError, error_message,
rb_cairo__inspect (rb_ary_new4 (argc, argv)));
x = NUM2INT (RARRAY_PTR (point)[0]);
y = NUM2INT (RARRAY_PTR (point)[1]);
}
else
{
x = NUM2INT (arg1);
y = NUM2INT (arg2);
}
return CBOOL2RVAL (cairo_region_contains_point (region, x, y));
}
static VALUE
cr_region_translate (int argc, VALUE *argv, VALUE self)
{
cairo_region_t *region;
int x, y;
VALUE arg1, arg2;
const char *error_message =
"invalid argument (expect "
"(x, y) or ([x, y])): %s";
rb_scan_args (argc, argv, "11", &arg1, &arg2);
region = _SELF;
if (argc == 1)
{
VALUE point;
point = rb_check_array_type (arg1);
if (RARRAY_LEN (point) != 4)
rb_raise (rb_eArgError, error_message,
rb_cairo__inspect (rb_ary_new4 (argc, argv)));
x = NUM2INT (RARRAY_PTR (point)[0]);
y = NUM2INT (RARRAY_PTR (point)[1]);
}
else
{
x = NUM2INT (arg1);
y = NUM2INT (arg2);
}
cairo_region_translate (region, x, y);
cr_region_check_status (region);
return Qnil;
}
#define DEFINE_OPERATOR(type) \
static VALUE \
cr_region_ ## type (int argc, VALUE *argv, VALUE self) \
{ \
cairo_status_t status; \
cairo_region_t *region, *other = NULL; \
cairo_rectangle_int_t rectangle; \
VALUE arg1, arg2, arg3, arg4; \
const char *error_message = \
"invalid argument (expect " \
"(region), (x, y, width, height) or ([x, y, width, height])): %s"; \
\
rb_scan_args (argc, argv, "13", &arg1, &arg2, &arg3, &arg4); \
\
region = _SELF; \
if (argc == 1) \
{ \
if (rb_cairo__is_kind_of (arg1, rb_cCairo_Region)) \
{ \
other = RVAL2CRREGION (arg1); \
} \
else \
{ \
VALUE rb_rectangle; \
\
rb_rectangle = rb_check_array_type (arg1); \
if (RARRAY_LEN (rb_rectangle) != 4) \
rb_raise (rb_eArgError, error_message, \
rb_cairo__inspect (rb_ary_new4 (argc, argv))); \
rectangle.x = NUM2INT (RARRAY_PTR (rb_rectangle)[0]); \
rectangle.y = NUM2INT (RARRAY_PTR (rb_rectangle)[1]); \
rectangle.width = NUM2INT (RARRAY_PTR (rb_rectangle)[2]); \
rectangle.height = NUM2INT (RARRAY_PTR (rb_rectangle)[3]); \
} \
} \
else if (argc == 4) \
{ \
rectangle.x = NUM2INT (arg1); \
rectangle.y = NUM2INT (arg2); \
rectangle.width = NUM2INT (arg3); \
rectangle.height = NUM2INT (arg4); \
} \
else \
{ \
rb_raise (rb_eArgError, error_message, \
rb_cairo__inspect (rb_ary_new4 (argc, argv))); \
} \
\
if (other) \
status = cairo_region_ ## type (region, other); \
else \
status = cairo_region_ ## type ## _rectangle (region, &rectangle); \
rb_cairo_check_status (status); \
cr_region_check_status (region); \
return Qnil; \
}
DEFINE_OPERATOR(subtract)
DEFINE_OPERATOR(intersect)
DEFINE_OPERATOR(union)
DEFINE_OPERATOR(xor)
#endif
void
Init_cairo_region (void)
{
#if CAIRO_CHECK_VERSION(1, 10, 0)
rb_cCairo_Region =
rb_define_class_under (rb_mCairo, "Region", rb_cObject);
rb_define_alloc_func (rb_cCairo_Region, cr_region_allocate);
rb_define_method (rb_cCairo_Region, "initialize", cr_region_initialize, -1);
rb_define_method (rb_cCairo_Region, "dup", cr_region_dup, 0);
rb_define_method (rb_cCairo_Region, "==", cr_region_equal, 1);
rb_define_method (rb_cCairo_Region, "extents", cr_region_get_extents, 0);
rb_define_method (rb_cCairo_Region, "num_rectangles",
cr_region_num_rectangles, 0);
rb_define_method (rb_cCairo_Region, "[]",
cr_region_get_rectangle, 1);
rb_define_method (rb_cCairo_Region, "empty?", cr_region_is_empty, 0);
rb_define_method (rb_cCairo_Region, "contains_rectangle",
cr_region_containts_rectangle, -1);
rb_define_method (rb_cCairo_Region, "contains_point?",
cr_region_containts_point, -1);
rb_define_method (rb_cCairo_Region, "translate!", cr_region_translate, -1);
rb_define_method (rb_cCairo_Region, "subtract!", cr_region_subtract, -1);
rb_define_method (rb_cCairo_Region, "intersect!", cr_region_intersect, -1);
rb_define_method (rb_cCairo_Region, "union!", cr_region_union, -1);
rb_define_method (rb_cCairo_Region, "xor!", cr_region_xor, -1);
RB_CAIRO_DEF_SETTERS (rb_cCairo_Region);
#endif
}
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