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

#initializeObject



445
446
447
448
449
450
451
452
453
# File 'ext/cairo/rb_cairo_surface.c', line 445

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

.gl_supported?Boolean

Returns:

  • (Boolean)


316
317
318
319
320
321
322
323
324
# File 'ext/cairo/rb_cairo_surface.c', line 316

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)


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

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

.image_supported?Boolean

Returns:

  • (Boolean)


220
221
222
223
224
# File 'ext/cairo/rb_cairo_surface.c', line 220

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

.pdf_supported?Boolean

Returns:

  • (Boolean)


226
227
228
229
230
231
232
233
234
# File 'ext/cairo/rb_cairo_surface.c', line 226

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)


236
237
238
239
240
241
242
243
244
# File 'ext/cairo/rb_cairo_surface.c', line 236

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)


286
287
288
289
290
291
292
293
294
# File 'ext/cairo/rb_cairo_surface.c', line 286

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)


246
247
248
249
250
251
252
253
254
# File 'ext/cairo/rb_cairo_surface.c', line 246

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)


306
307
308
309
310
311
312
313
314
# File 'ext/cairo/rb_cairo_surface.c', line 306

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)


296
297
298
299
300
301
302
303
304
# File 'ext/cairo/rb_cairo_surface.c', line 296

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)


266
267
268
269
270
271
272
273
274
# File 'ext/cairo/rb_cairo_surface.c', line 266

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)


332
333
334
335
336
337
338
339
340
# File 'ext/cairo/rb_cairo_surface.c', line 332

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)


276
277
278
279
280
281
282
283
284
# File 'ext/cairo/rb_cairo_surface.c', line 276

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)


256
257
258
259
260
261
262
263
264
# File 'ext/cairo/rb_cairo_surface.c', line 256

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)


342
343
344
345
346
347
348
349
350
# File 'ext/cairo/rb_cairo_surface.c', line 342

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

Instance Method Details

#cloneObject

Raises:

  • (NotImplementedError)


74
75
76
# File 'lib/cairo.rb', line 74

def clone
  raise NotImplementedError
end

#contentObject



671
672
673
674
675
# File 'ext/cairo/rb_cairo_surface.c', line 671

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

#copy_pageObject



909
910
911
912
913
914
915
# File 'ext/cairo/rb_cairo_surface.c', line 909

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

#create_similarObject



516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
# File 'ext/cairo/rb_cairo_surface.c', line 516

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_imageObject



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
576
577
578
579
580
581
582
# File 'ext/cairo/rb_cairo_surface.c', line 547

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);
}

#destroyObject

Surface manipulation



456
457
458
459
460
461
462
463
464
465
466
# File 'ext/cairo/rb_cairo_surface.c', line 456

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

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

  return self;
}

#deviceObject



664
665
666
667
668
# File 'ext/cairo/rb_cairo_surface.c', line 664

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

#device_offsetObject



848
849
850
851
852
853
854
855
856
# File 'ext/cairo/rb_cairo_surface.c', line 848

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_scaleObject



869
870
871
872
873
874
875
876
# File 'ext/cairo/rb_cairo_surface.c', line 869

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));
}

#dupObject

Raises:

  • (NotImplementedError)


71
72
73
# File 'lib/cairo.rb', line 71

def dup
  raise NotImplementedError
end

#fallback_resolutionObject



892
893
894
895
896
897
898
899
900
901
902
903
904
# File 'ext/cairo/rb_cairo_surface.c', line 892

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));
}

#finishObject



480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
# File 'ext/cairo/rb_cairo_surface.c', line 480

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;
}

#flushObject



792
793
794
795
796
797
798
# File 'ext/cairo/rb_cairo_surface.c', line 792

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

#font_optionsObject



782
783
784
785
786
787
788
789
790
# File 'ext/cairo/rb_cairo_surface.c', line 782

static VALUE
cr_surface_get_font_options (VALUE self)
{
  cairo_font_options_t *options = cairo_font_options_create();
  cairo_surface_get_font_options (_SELF, options);
  rb_cairo_surface_check_status (_SELF);
  rb_cairo_check_status (cairo_font_options_status (options));
  return CRFONTOPTIONS2RVAL (options);
}

#get_mime_dataObject



718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
# File 'ext/cairo/rb_cairo_surface.c', line 718

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_imageObject



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
614
615
616
617
618
619
620
# File 'ext/cairo/rb_cairo_surface.c', line 584

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_dirtyObject



800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
# File 'ext/cairo/rb_cairo_surface.c', line 800

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_countObject



468
469
470
471
472
473
474
475
476
477
478
# File 'ext/cairo/rb_cairo_surface.c', line 468

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_offsetObject



838
839
840
841
842
843
844
845
846
# File 'ext/cairo/rb_cairo_surface.c', line 838

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_scaleObject



859
860
861
862
863
864
865
866
867
# File 'ext/cairo/rb_cairo_surface.c', line 859

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_resolutionObject



879
880
881
882
883
884
885
886
887
888
889
# File 'ext/cairo/rb_cairo_surface.c', line 879

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_dataObject



734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
# File 'ext/cairo/rb_cairo_surface.c', line 734

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_pageObject



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

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

#sub_rectangle_surfaceObject



643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
# File 'ext/cairo/rb_cairo_surface.c', line 643

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)


768
769
770
771
772
773
774
775
776
777
778
779
# File 'ext/cairo/rb_cairo_surface.c', line 768

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_imageObject



622
623
624
625
626
627
628
629
630
631
# File 'ext/cairo/rb_cairo_surface.c', line 622

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_pngObject



707
708
709
710
711
712
713
714
# File 'ext/cairo/rb_cairo_surface.c', line 707

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);
}