Class: Cairo::Surface

Inherits:
Object
  • Object
show all
Defined in:
lib/cairo.rb,
lib/cairo/surface.rb,
ext/cairo/rb_cairo_surface.c

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Object 



483
484
485
486
487
488
489
490
491
 
# File 'ext/cairo/rb_cairo_surface.c', line 483

static VALUE
cr_surface_initialize (int argc, VALUE *argv, VALUE self)
{
  rb_raise(rb_eNotImpError,
           "%s class creation isn't supported on this cairo installation",
           rb_obj_classname(self));

  return Qnil;
}

Class Method Details

.create ⇒ Object 



262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
 
# File 'ext/cairo/rb_cairo_surface.c', line 262

static VALUE
cr_surface_create (int argc, VALUE *argv, VALUE klass)
{
  VALUE rb_surface;
  rb_surface = rb_funcallv (klass, cr_id_new, argc, argv);
  if (rb_block_given_p ())
    {
      return rb_ensure (rb_cairo__surface_yield_and_finish, rb_surface,
                        cr_surface_destroy_with_destroy_check, rb_surface);
    }
  else
    {
      return rb_surface;
    }
}

.gl_supported? ⇒ Boolean

Returns:

  • (Boolean) 


374
375
376
377
378
379
380
381
382
 
# File 'ext/cairo/rb_cairo_surface.c', line 374

static VALUE
cr_surface_gl_supported_p (VALUE klass)
{
#ifdef RB_CAIRO_HAS_GL_SURFACE
  return Qtrue;
#else
  return Qfalse;
#endif
}

.gl_texture_supported? ⇒ Boolean

Returns:

  • (Boolean) 


384
385
386
387
388
 
# File 'ext/cairo/rb_cairo_surface.c', line 384

static VALUE
cr_surface_gl_texture_supported_p (VALUE klass)
{
  return cr_surface_gl_supported_p(klass);
}

.image_supported? ⇒ Boolean

Returns:

  • (Boolean) 


278
279
280
281
282
 
# File 'ext/cairo/rb_cairo_surface.c', line 278

static VALUE
cr_surface_image_supported_p (VALUE klass)
{
  return Qtrue;
}

.pdf_supported? ⇒ Boolean

Returns:

  • (Boolean) 


284
285
286
287
288
289
290
291
292
 
# File 'ext/cairo/rb_cairo_surface.c', line 284

static VALUE
cr_surface_pdf_supported_p (VALUE klass)
{
#ifdef CAIRO_HAS_PDF_SURFACE
  return Qtrue;
#else
  return Qfalse;
#endif
}

.ps_supported? ⇒ Boolean

Returns:

  • (Boolean) 


294
295
296
297
298
299
300
301
302
 
# File 'ext/cairo/rb_cairo_surface.c', line 294

static VALUE
cr_surface_ps_supported_p (VALUE klass)
{
#ifdef CAIRO_HAS_PS_SURFACE
  return Qtrue;
#else
  return Qfalse;
#endif
}

.quartz_image_supported? ⇒ Boolean

Returns:

  • (Boolean) 


344
345
346
347
348
349
350
351
352
 
# File 'ext/cairo/rb_cairo_surface.c', line 344

static VALUE
cr_surface_quartz_image_supported_p (VALUE klass)
{
#ifdef RB_CAIRO_HAS_QUARTZ_IMAGE_SURFACE
  return Qtrue;
#else
  return Qfalse;
#endif
}

.quartz_supported? ⇒ Boolean

Returns:

  • (Boolean) 


304
305
306
307
308
309
310
311
312
 
# File 'ext/cairo/rb_cairo_surface.c', line 304

static VALUE
cr_surface_quartz_supported_p (VALUE klass)
{
#ifdef RB_CAIRO_HAS_QUARTZ_SURFACE
  return Qtrue;
#else
  return Qfalse;
#endif
}

.recording_supported? ⇒ Boolean

Returns:

  • (Boolean) 


364
365
366
367
368
369
370
371
372
 
# File 'ext/cairo/rb_cairo_surface.c', line 364

static VALUE
cr_surface_recording_supported_p (VALUE klass)
{
#ifdef CAIRO_HAS_RECORDING_SURFACE
  return Qtrue;
#else
  return Qfalse;
#endif
}

.script_supported? ⇒ Boolean

Returns:

  • (Boolean) 


354
355
356
357
358
359
360
361
362
 
# File 'ext/cairo/rb_cairo_surface.c', line 354

static VALUE
cr_surface_script_supported_p (VALUE klass)
{
#ifdef CAIRO_HAS_SCRIPT_SURFACE
  return Qtrue;
#else
  return Qfalse;
#endif
}

.supported?(type) ⇒ Boolean

Returns:

  • (Boolean) 


4
5
6
7
8
9
10
 
# File 'lib/cairo/surface.rb', line 4

def supported?(type)
  type_components = type.to_s.split(/([A-Z][a-z\d]+)/).reject(&:empty?)
  snake_case_type_name = type_components.join("_").downcase
  supported_predicate = "#{snake_case_type_name}_supported?"
  return false unless respond_to?(supported_predicate)
  send(supported_predicate)
end

.svg_supported? ⇒ Boolean

Returns:

  • (Boolean) 


324
325
326
327
328
329
330
331
332
 
# File 'ext/cairo/rb_cairo_surface.c', line 324

static VALUE
cr_surface_svg_supported_p (VALUE klass)
{
#ifdef CAIRO_HAS_SVG_SURFACE
  return Qtrue;
#else
  return Qfalse;
#endif
}

.tee_supported? ⇒ Boolean

Returns:

  • (Boolean) 


390
391
392
393
394
395
396
397
398
 
# File 'ext/cairo/rb_cairo_surface.c', line 390

static VALUE
cr_surface_tee_supported_p (VALUE klass)
{
#ifdef CAIRO_HAS_TEE_SURFACE
  return Qtrue;
#else
  return Qfalse;
#endif
}

.win32_printing_supported? ⇒ Boolean

Returns:

  • (Boolean) 


334
335
336
337
338
339
340
341
342
 
# File 'ext/cairo/rb_cairo_surface.c', line 334

static VALUE
cr_surface_win32_printing_supported_p (VALUE klass)
{
#ifdef RB_CAIRO_HAS_WIN32_PRINTING_SURFACE
  return Qtrue;
#else
  return Qfalse;
#endif
}

.win32_supported? ⇒ Boolean

Returns:

  • (Boolean) 


314
315
316
317
318
319
320
321
322
 
# File 'ext/cairo/rb_cairo_surface.c', line 314

static VALUE
cr_surface_win32_supported_p (VALUE klass)
{
#ifdef CAIRO_HAS_WIN32_SURFACE
  return Qtrue;
#else
  return Qfalse;
#endif
}

.xml_supported? ⇒ Boolean

Returns:

  • (Boolean) 


400
401
402
403
404
405
406
407
408
 
# File 'ext/cairo/rb_cairo_surface.c', line 400

static VALUE
cr_surface_xml_supported_p (VALUE klass)
{
#ifdef CAIRO_HAS_XML_SURFACE
  return Qtrue;
#else
  return Qfalse;
#endif
}

Instance Method Details

#clone ⇒ Object

Raises:

  • (NotImplementedError) 


80
81
82
 
# File 'lib/cairo.rb', line 80

def clone
  raise NotImplementedError
end

#content ⇒ Object 



694
695
696
697
698
 
# File 'ext/cairo/rb_cairo_surface.c', line 694

static VALUE
cr_surface_get_content (VALUE self)
{
  return INT2NUM (cairo_surface_get_content (_SELF));
}

#copy_page ⇒ Object 



943
944
945
946
947
948
949
 
# File 'ext/cairo/rb_cairo_surface.c', line 943

static VALUE
cr_surface_copy_page (VALUE self)
{
  cairo_surface_copy_page (_SELF);
  rb_cairo_surface_check_status (_SELF);
  return self;
}

#create_similar ⇒ Object 



547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
 
# File 'ext/cairo/rb_cairo_surface.c', line 547

static VALUE
cr_surface_create_similar (int argc, VALUE *argv, VALUE self)
{
  cairo_surface_t *surface, *similar_surface;
  cairo_content_t content;
  int width, height;
  VALUE arg1, arg2, arg3;

  rb_scan_args (argc, argv, "21", &arg1, &arg2, &arg3);

  surface = _SELF;
  if (argc == 2)
    {
      content = cairo_surface_get_content (surface);
      width = NUM2INT (arg1);
      height = NUM2INT (arg2);
    }
  else
    {
      content = RVAL2CRCONTENT (arg1);
      width = NUM2INT (arg2);
      height = NUM2INT (arg3);
    }

  similar_surface = cairo_surface_create_similar (surface, content,
                                                  width, height);
  rb_cairo_surface_check_status (similar_surface);
  return CRSURFACE2RVAL_WITH_DESTROY (similar_surface);
}

#create_similar_image ⇒ Object 



578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
 
# File 'ext/cairo/rb_cairo_surface.c', line 578

static VALUE
cr_surface_create_similar_image (int argc, VALUE *argv, VALUE self)
{
  cairo_surface_t *surface, *similar_image;
  cairo_format_t format;
  int width, height;
  VALUE arg1, arg2, arg3;

  rb_scan_args (argc, argv, "21", &arg1, &arg2, &arg3);

  surface = _SELF;
  if (argc == 2)
    {
      if (cairo_surface_get_type (surface) == CAIRO_SURFACE_TYPE_IMAGE)
        {
          format = cairo_image_surface_get_format (surface);
        }
      else
        {
          format = CAIRO_FORMAT_ARGB32;
        }
      width = NUM2INT (arg1);
      height = NUM2INT (arg2);
    }
  else
    {
      format = RVAL2CRFORMAT (arg1);
      width = NUM2INT (arg2);
      height = NUM2INT (arg3);
    }

  similar_image = cairo_surface_create_similar_image (surface, format,
                                                      width, height);
  rb_cairo_surface_check_status (similar_image);
  return CRSURFACE2RVAL_WITH_DESTROY (similar_image);
}

#destroy ⇒ Object 



242
243
244
245
246
247
248
249
250
251
252
 
# File 'ext/cairo/rb_cairo_surface.c', line 242

static VALUE
cr_surface_destroy (VALUE self)
{
  cairo_surface_t *surface;

  surface = _SELF;
  cr_surface_destroy_raw (surface);
  DATA_PTR (self) = NULL;

  return self;
}

#device ⇒ Object 



687
688
689
690
691
 
# File 'ext/cairo/rb_cairo_surface.c', line 687

static VALUE
cr_surface_get_device (VALUE self)
{
  return CRDEVICE2RVAL (cairo_surface_get_device (_SELF));
}

#device_offset ⇒ Object 



882
883
884
885
886
887
888
889
890
 
# File 'ext/cairo/rb_cairo_surface.c', line 882

static VALUE
cr_surface_get_device_offset (VALUE self)
{
  double x_offset, y_offset;

  cairo_surface_get_device_offset (_SELF, &x_offset, &y_offset);
  rb_cairo_surface_check_status (_SELF);
  return rb_ary_new3 (2, rb_float_new (x_offset), rb_float_new (y_offset));
}

#device_scale ⇒ Object 



903
904
905
906
907
908
909
910
 
# File 'ext/cairo/rb_cairo_surface.c', line 903

static VALUE
cr_surface_get_device_scale (VALUE self)
{
  double x_scale, y_scale;

  cairo_surface_get_device_scale (_SELF, &x_scale, &y_scale);
  return rb_ary_new3 (2, rb_float_new (x_scale), rb_float_new (y_scale));
}

#dup ⇒ Object

Raises:

  • (NotImplementedError) 


77
78
79
 
# File 'lib/cairo.rb', line 77

def dup
  raise NotImplementedError
end

#fallback_resolution ⇒ Object 



926
927
928
929
930
931
932
933
934
935
936
937
938
 
# File 'ext/cairo/rb_cairo_surface.c', line 926

static VALUE
cr_surface_get_fallback_resolution (VALUE self)
{
  double x_pixels_per_inch, y_pixels_per_inch;

  cairo_surface_get_fallback_resolution (_SELF,
                                         &x_pixels_per_inch,
                                         &y_pixels_per_inch);
  rb_cairo_surface_check_status (_SELF);
  return rb_ary_new3 (2,
                      rb_float_new (x_pixels_per_inch),
                      rb_float_new (y_pixels_per_inch));
}

#finish ⇒ Object 



506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
 
# File 'ext/cairo/rb_cairo_surface.c', line 506

static VALUE
cr_surface_finish (VALUE self)
{
  cairo_surface_t *surface;
  rb_cairo__io_callback_closure_t *closure;

  surface = _SELF;
  closure = cairo_surface_get_user_data (surface, &cr_closure_key);

  cairo_surface_finish (surface);
  cairo_surface_set_user_data (surface, &cr_finished_key, (void *)CR_TRUE, NULL);
  cairo_surface_set_user_data (surface, &cr_object_holder_key, NULL, NULL);

  if (closure && !NIL_P (closure->error))
    rb_exc_raise (closure->error);
  rb_cairo_surface_check_status (surface);

  return self;
}

#flush ⇒ Object 



826
827
828
829
830
831
832
 
# File 'ext/cairo/rb_cairo_surface.c', line 826

static VALUE
cr_surface_flush (VALUE self)
{
  cairo_surface_flush (_SELF);
  rb_cairo_surface_check_status (_SELF);
  return self;
}

#font_options ⇒ Object 



805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
 
# File 'ext/cairo/rb_cairo_surface.c', line 805

static VALUE
cr_surface_get_font_options (VALUE self)
{
  cairo_font_options_t *options;
  VALUE rb_options;

  options = cairo_font_options_create ();
  rb_cairo_check_status (cairo_font_options_status (options));

  /* TODO: Use rb_ensure() */
  rb_options = CRFONTOPTIONS2RVAL (options);
  cairo_font_options_destroy (options);

  options = RVAL2CRFONTOPTIONS (rb_options);
  cairo_surface_get_font_options (_SELF, options);
  rb_cairo_surface_check_status (_SELF);
  rb_cairo_check_status (cairo_font_options_status (options));

  return rb_options;
}

#get_mime_data ⇒ Object 



741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
 
# File 'ext/cairo/rb_cairo_surface.c', line 741

static VALUE
cr_surface_get_mime_data (VALUE self, VALUE mime_type)
{
  cairo_surface_t *surface;
  const unsigned char *data;
  unsigned long length;

  surface = _SELF;
  cairo_surface_get_mime_data (surface, StringValueCStr (mime_type),
                               &data, &length);
  if (data)
    return rb_str_new ((const char *)data, length);
  else
    return Qnil;
}

#map_to_image ⇒ Object 



615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
 
# File 'ext/cairo/rb_cairo_surface.c', line 615

static VALUE
cr_surface_map_to_image (int argc, VALUE *argv, VALUE self)
{
  cairo_surface_t *surface, *mapped_image;
  cairo_rectangle_int_t extents_value;
  cairo_rectangle_int_t *extents = NULL;
  VALUE rb_extents;

  rb_scan_args (argc, argv, "01", &rb_extents);

  surface = _SELF;
  if (!NIL_P (rb_extents))
    {
      extents = &extents_value;
      if (rb_cairo__is_kind_of (rb_extents, rb_cCairo_Rectangle))
        {
          extents->x = NUM2INT (rb_funcall (rb_extents, cr_id_x, 0));
          extents->y = NUM2INT (rb_funcall (rb_extents, cr_id_y, 0));
          extents->width = NUM2INT (rb_funcall (rb_extents, cr_id_width, 0));
          extents->height = NUM2INT (rb_funcall (rb_extents, cr_id_height, 0));
        }
      else
        {
          VALUE *values;
          rb_extents = rb_convert_type (rb_extents, T_ARRAY, "Array", "to_ary");
          values = RARRAY_PTR (rb_extents);
          extents->x = NUM2INT (values[0]);
          extents->y = NUM2INT (values[1]);
          extents->height = NUM2INT (values[2]);
          extents->width = NUM2INT (values[3]);
        }
    }

  mapped_image = cairo_surface_map_to_image (surface, extents);
  rb_cairo_surface_check_status (mapped_image);
  return CRSURFACE2RVAL_WITH_DESTROY (mapped_image);
}

#mark_dirty ⇒ Object 



834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
 
# File 'ext/cairo/rb_cairo_surface.c', line 834

static VALUE
cr_surface_mark_dirty (int argc, VALUE *argv, VALUE self)
{
  VALUE x, y, width, height;
  int n;

  n = rb_scan_args (argc, argv, "04", &x, &y, &width, &height);

  if (n == 0)
    {
      cairo_surface_mark_dirty (_SELF);
    }
  else if (n == 4)
    {
      cairo_surface_mark_dirty_rectangle (_SELF,
                                          NUM2INT (x), NUM2INT (y),
                                          NUM2INT (width), NUM2INT (height));
    }
  else
    {
      int i;
      VALUE args;

      args = rb_ary_new2 (n);
      for (i = 0; i < n; i++)
        {
          rb_ary_push (args, argv[i]);
        }

      rb_raise (rb_eArgError,
                "invalid argument (expect () or (x, y, width, height)): %s",
                rb_cairo__inspect (args));
    }

  rb_cairo_surface_check_status (_SELF);
  return self;
}

#reference_count ⇒ Object

Surface manipulation



494
495
496
497
498
499
500
501
502
503
504
 
# File 'ext/cairo/rb_cairo_surface.c', line 494

static VALUE
cr_surface_get_reference_count (VALUE self)
{
  cairo_surface_t *surface;
  unsigned int reference_count;

  surface = _SELF;
  reference_count = cairo_surface_get_reference_count (surface);

  return UINT2NUM (reference_count);
}

#set_device_offset ⇒ Object 



872
873
874
875
876
877
878
879
880
 
# File 'ext/cairo/rb_cairo_surface.c', line 872

static VALUE
cr_surface_set_device_offset (VALUE self, VALUE x_offset, VALUE y_offset)
{
  cairo_surface_set_device_offset (_SELF,
                                   NUM2DBL (x_offset),
                                   NUM2DBL (y_offset));
  rb_cairo_surface_check_status (_SELF);
  return self;
}

#set_device_scale ⇒ Object 



893
894
895
896
897
898
899
900
901
 
# File 'ext/cairo/rb_cairo_surface.c', line 893

static VALUE
cr_surface_set_device_scale (VALUE self, VALUE x_scale, VALUE y_scale)
{
  cairo_surface_set_device_scale (_SELF,
                                  NUM2DBL (x_scale),
                                  NUM2DBL (y_scale));
  rb_cairo_surface_check_status (_SELF);
  return self;
}

#set_fallback_resolution ⇒ Object 



913
914
915
916
917
918
919
920
921
922
923
 
# File 'ext/cairo/rb_cairo_surface.c', line 913

static VALUE
cr_surface_set_fallback_resolution (VALUE self,
                                    VALUE x_pixels_per_inch,
                                    VALUE y_pixels_per_inch)
{
  cairo_surface_set_fallback_resolution (_SELF,
                                         NUM2DBL (x_pixels_per_inch),
                                         NUM2DBL (y_pixels_per_inch));
  rb_cairo_surface_check_status (_SELF);
  return self;
}

#set_mime_data ⇒ Object 



757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
 
# File 'ext/cairo/rb_cairo_surface.c', line 757

static VALUE
cr_surface_set_mime_data (VALUE self, VALUE rb_mime_type, VALUE rb_data)
{
  cairo_status_t status;
  cairo_surface_t *surface;
  const char *mime_type;

  surface = _SELF;
  mime_type = StringValueCStr (rb_mime_type);
  if (NIL_P (rb_data))
    {
      status = cairo_surface_set_mime_data (surface, mime_type,
                                            NULL, 0, NULL, NULL);
    }
  else
    {
      const char *raw_data;
      unsigned char *data;
      unsigned long length;

      raw_data = StringValuePtr (rb_data);
      length = RSTRING_LEN (rb_data);
      data = xmalloc (length);
      memcpy (data, raw_data, length);
      status = cairo_surface_set_mime_data (surface, mime_type,
                                            data, length,
                                            xfree, data);
    }
  rb_cairo_check_status (status);
  return Qnil;
}

#show_page ⇒ Object 



951
952
953
954
955
956
957
 
# File 'ext/cairo/rb_cairo_surface.c', line 951

static VALUE
cr_surface_show_page (VALUE self)
{
  cairo_surface_show_page (_SELF);
  rb_cairo_surface_check_status (_SELF);
  return self;
}

#sub_rectangle_surface ⇒ Object 



666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
 
# File 'ext/cairo/rb_cairo_surface.c', line 666

static VALUE
cr_surface_create_sub_rectangle_surface (VALUE self, VALUE x, VALUE y,
                                         VALUE width, VALUE height)
{
  VALUE rb_surface;
  cairo_surface_t *surface;

  surface = cairo_surface_create_for_rectangle (RVAL2CRSURFACE (self),
                                                NUM2DBL (x),
                                                NUM2DBL (y),
                                                NUM2DBL (width),
                                                NUM2INT (height));
  rb_cairo_surface_check_status (surface);
  rb_surface = CRSURFACE2RVAL_WITH_DESTROY (surface);
  if (rb_block_given_p ())
    return rb_ensure (rb_yield, rb_surface,
                      cr_surface_destroy_with_destroy_check, rb_surface);
  else
    return rb_surface;
}

#supported_mime_type? ⇒ Boolean

Returns:

  • (Boolean) 


791
792
793
794
795
796
797
798
799
800
801
802
 
# File 'ext/cairo/rb_cairo_surface.c', line 791

static VALUE
cr_surface_supported_mime_type_p (VALUE self, VALUE rb_mime_type)
{
  cairo_surface_t *surface;
  const char *mime_type;
  cairo_bool_t supported_p;

  surface = _SELF;
  mime_type = StringValueCStr (rb_mime_type);
  supported_p = cairo_surface_supports_mime_type (surface, mime_type);
  return CBOOL2RVAL (supported_p);
}

#unmap_image ⇒ Object 



653
654
655
656
657
658
659
660
661
662
 
# File 'ext/cairo/rb_cairo_surface.c', line 653

static VALUE
cr_surface_unmap_image (VALUE self, VALUE rb_mapped_image)
{
  cairo_surface_t *surface, *mapped_image;

  surface = _SELF;
  mapped_image = RVAL2CRSURFACE (rb_mapped_image);
  cairo_surface_unmap_image (surface, mapped_image);
  return Qnil;
}

#write_to_png ⇒ Object 



730
731
732
733
734
735
736
737
 
# File 'ext/cairo/rb_cairo_surface.c', line 730

static VALUE
cr_surface_write_to_png_generic (VALUE self, VALUE target)
{
  if (rb_respond_to (target, rb_cairo__io_id_write))
    return cr_surface_write_to_png_stream (self, target);
  else
    return cr_surface_write_to_png (self, target);
}