static cairo_surface_t *
cr_image_surface_create (VALUE self, VALUE format, VALUE width, VALUE height)
{
cairo_format_t cr_format;
cr_format = NIL_P (format) ? CAIRO_FORMAT_ARGB32 : RVAL2CRFORMAT (format);
return cairo_image_surface_create (cr_format,
NUM2INT (width),
NUM2INT (height));
}
static cairo_surface_t *
cr_image_surface_create_for_data (VALUE self, VALUE rb_data, VALUE format,
VALUE width, VALUE height, VALUE stride)
{
unsigned char *data;
data = (unsigned char *)StringValuePtr (rb_data);
return cairo_image_surface_create_for_data (data,
RVAL2CRFORMAT (format),
NUM2INT (width),
NUM2INT (height),
NUM2INT (stride));
}
static VALUE
cr_format_stride_for_width (VALUE self, VALUE format, VALUE width)
{
return INT2NUM (cairo_format_stride_for_width (RVAL2CRFORMAT (format),
NUM2INT (width)));
}
static VALUE
cr_win32_surface_initialize (int argc, VALUE *argv, VALUE self)
{
cairo_surface_t *surface = NULL;
VALUE arg1, arg2, arg3, arg4;
VALUE hdc, format, width, height;
rb_scan_args (argc, argv, "13", &arg1, &arg2, &arg3, &arg4);
switch (argc)
{
case 1:
hdc = arg1;
surface = cairo_win32_surface_create (NUM2PTR (hdc));
break;
case 2:
width = arg1;
height = arg2;
surface = cairo_win32_surface_create_with_dib (CAIRO_FORMAT_ARGB32,
NUM2INT (width),
NUM2INT (height));
break;
case 3:
if (NIL_P (arg1) ||
(rb_cairo__is_kind_of (arg1, rb_cNumeric) &&
NUM2INT (arg1) != CAIRO_FORMAT_RGB24))
{
# if CAIRO_CHECK_VERSION(1, 4, 0)
HDC win32_hdc;
hdc = arg1;
width = arg2;
height = arg3;
win32_hdc = NIL_P (hdc) ? NULL : NUM2PTR (hdc);
surface = cairo_win32_surface_create_with_ddb (win32_hdc,
CAIRO_FORMAT_RGB24,
NUM2INT (width),
NUM2INT (height));
# else
rb_raise (rb_eArgError,
"Cairo::Win32Surface.new(hdc, width, height) "
"is available since cairo >= 1.4.0");
# endif
}
else
{
format = arg1;
width = arg2;
height = arg3;
surface = cairo_win32_surface_create_with_dib (RVAL2CRFORMAT (format),
NUM2INT (width),
NUM2INT (height));
}
break;
case 4:
{
# if CAIRO_CHECK_VERSION(1, 4, 0)
HDC win32_hdc;
hdc = arg1;
format = arg2;
width = arg3;
height = arg4;
win32_hdc = NIL_P (hdc) ? NULL : (HDC) NUM2UINT (hdc);
surface = cairo_win32_surface_create_with_ddb (win32_hdc,
RVAL2CRFORMAT (format),
NUM2INT (width),
NUM2INT (height));
# else
rb_raise (rb_eArgError,
"Cairo::Win32Surface.new(hdc, format, width, height) "
"is available since cairo >= 1.4.0");
# endif
}
break;
}
if (!surface)
rb_cairo_check_status (CAIRO_STATUS_INVALID_FORMAT);
cr_surface_check_status (surface);
DATA_PTR (self) = surface;
if (rb_block_given_p ())
yield_and_finish (self);
return Qnil;
}
static VALUE
cr_quartz_surface_initialize (int argc, VALUE *argv, VALUE self)
{
id objc_object = nil;
CGContextRef context;
unsigned int width, height;
cairo_surface_t *surface = NULL;
cairo_format_t format = CAIRO_FORMAT_ARGB32;
VALUE arg1, arg2, arg3, rb_width, rb_height;
static VALUE rb_cOSXCGContextRef = Qnil;
rb_scan_args (argc, argv, "21", &arg1, &arg2, &arg3);
if (argc == 2)
{
rb_width = arg1;
rb_height = arg2;
}
else
{
switch (TYPE (arg1))
{
case T_NIL:
break;
case T_STRING:
case T_SYMBOL:
case T_FIXNUM:
format = RVAL2CRFORMAT (arg1);
break;
default:
if (NIL_P (rb_cOSXCGContextRef))
rb_cOSXCGContextRef =
rb_const_get (rb_const_get (rb_cObject, rb_intern ("OSX")),
rb_intern ("CGContextRef"));
if (RTEST (rb_obj_is_kind_of (arg1, rb_cOSXCGContextRef)))
rbobj_to_nsobj (arg1, &objc_object);
else
rb_raise (rb_eArgError,
"invalid argument (expect "
"(width, height), "
"(format, width, height) or "
"(cg_context, width, height)): %s",
inspect (rb_ary_new3 (3, arg1, arg2, arg3)));
break;
}
rb_width = arg2;
rb_height = arg3;
}
width = NUM2UINT (rb_width);
height = NUM2UINT (rb_height);
if (objc_object == nil)
{
surface = cairo_quartz_surface_create (format, width, height);
}
else
{
context = (CGContextRef)objc_object;
surface =
cairo_quartz_surface_create_for_cg_context (context, width, height);
}
cr_surface_check_status (surface);
DATA_PTR (self) = surface;
if (rb_block_given_p ())
yield_and_finish (self);
return Qnil;
}
