Ejemplo n.º 1
0
static VALUE
rg_draw_glyph(VALUE self, VALUE font, VALUE glyph, VALUE x, VALUE y)
{
    pango_renderer_draw_glyph(_SELF(self), PANGO_FONT(RVAL2GOBJ(font)),
                              NUM2INT(glyph), NUM2INT(x), NUM2INT(y));
    return self;
}
Ejemplo n.º 2
0
static VALUE
rg_draw_glyphs(VALUE self, VALUE gc, VALUE font, VALUE x, VALUE y, VALUE glyphs)
{
    gdk_draw_glyphs(_SELF(self), GDK_GC(RVAL2GOBJ(gc)), PANGO_FONT(RVAL2GOBJ(font)),
                    NUM2INT(x), NUM2INT(y), 
                    (PangoGlyphString*)(RVAL2BOXED(glyphs, PANGO_TYPE_GLYPH_STRING)));
    return self;
}
Ejemplo n.º 3
0
static VALUE
rg_draw_glyphs(VALUE self, VALUE font, VALUE glyphs, VALUE x, VALUE y)
{
    pango_renderer_draw_glyphs(_SELF(self),
                               PANGO_FONT(RVAL2GOBJ(font)),
                               (PangoGlyphString *)(RVAL2BOXED(glyphs, PANGO_TYPE_GLYPH_STRING)),
                               NUM2INT(x), NUM2INT(y));
    return self;
}
Ejemplo n.º 4
0
static VALUE
rg_draw_glyphs_transformed(VALUE self, VALUE gc, VALUE matrix, VALUE font, VALUE x, VALUE y, VALUE glyphs)
{
    gdk_draw_glyphs_transformed(_SELF(self), GDK_GC(RVAL2GOBJ(gc)), 
                                NIL_P(matrix) ? (PangoMatrix*)NULL : (PangoMatrix*)(RVAL2BOXED(matrix, PANGO_TYPE_MATRIX)),
                                PANGO_FONT(RVAL2GOBJ(font)),
                                NUM2INT(x), NUM2INT(y), 
                                (PangoGlyphString*)(RVAL2BOXED(glyphs, PANGO_TYPE_GLYPH_STRING)));
    return self;
}
Ejemplo n.º 5
0
static VALUE
rglyph_extents(int argc, VALUE *argv, VALUE self)
{
    VALUE font, start_index, end_index;
    PangoRectangle ink_rect;
    PangoRectangle logical_rect;

    rb_scan_args(argc, argv, "12", &font, &start_index, &end_index);

    if (NIL_P(start_index)){
        pango_glyph_string_extents(_SELF(self), 
                                   PANGO_FONT(RVAL2GOBJ(font)),
                                   &ink_rect, &logical_rect);
    } else {
        pango_glyph_string_extents_range(_SELF(self), 
                                         NUM2INT(start_index), NUM2INT(end_index),
                                         PANGO_FONT(RVAL2GOBJ(font)),
                                         &ink_rect, &logical_rect);
    }

    return rb_assoc_new(BOXED2RVAL(&ink_rect, PANGO_TYPE_RECTANGLE),
                        BOXED2RVAL(&logical_rect, PANGO_TYPE_RECTANGLE));
}
cairo_scaled_font_t *
_pango_cairo_font_private_get_scaled_font (PangoCairoFontPrivate *cf_priv)
{
  cairo_font_face_t *font_face;

  if (G_LIKELY (cf_priv->scaled_font))
    return cf_priv->scaled_font;

  /* need to create it */

  if (G_UNLIKELY (cf_priv->data == NULL))
    {
      /* we have tried to create and failed before */
      return NULL;
    }

  font_face = (* PANGO_CAIRO_FONT_GET_IFACE (cf_priv->cfont)->create_font_face) (cf_priv->cfont);
  if (G_UNLIKELY (font_face == NULL))
    goto done;

  cf_priv->scaled_font = cairo_scaled_font_create (font_face,
						   &cf_priv->data->font_matrix,
						   &cf_priv->data->ctm,
						   cf_priv->data->options);

  cairo_font_face_destroy (font_face);

done:

  if (G_UNLIKELY (cf_priv->scaled_font == NULL || cairo_scaled_font_status (cf_priv->scaled_font) != CAIRO_STATUS_SUCCESS))
    {
      cairo_scaled_font_t *scaled_font = cf_priv->scaled_font;
      PangoFont *font = PANGO_FONT (cf_priv->cfont);
      static GQuark warned_quark = 0;
      if (!warned_quark)
	warned_quark = g_quark_from_static_string ("pangocairo-scaledfont-warned");

      if (!g_object_get_qdata (G_OBJECT (font), warned_quark))
	{
	  PangoFontDescription *desc;
	  char *s;

	  desc = pango_font_describe (font);
	  s = pango_font_description_to_string (desc);
	  pango_font_description_free (desc);

	  g_warning ("failed to create cairo %s, expect ugly output. the offending font is '%s'",
		     font_face ? "scaled font" : "font face",
		     s);

	  if (!font_face)
		g_warning ("font_face is NULL");
	  else
		g_warning ("font_face status is: %s",
			   cairo_status_to_string (cairo_font_face_status (font_face)));

	  if (!scaled_font)
		g_warning ("scaled_font is NULL");
	  else
		g_warning ("scaled_font status is: %s",
			   cairo_status_to_string (cairo_scaled_font_status (scaled_font)));

	  g_free (s);

	  g_object_set_qdata_full (G_OBJECT (font), warned_quark,
				   GINT_TO_POINTER (1), NULL);
	}
    }

  _pango_cairo_font_private_scaled_font_data_destroy (cf_priv->data);
  cf_priv->data = NULL;

  return cf_priv->scaled_font;
}
Ejemplo n.º 7
0
static void
basic_engine_shape (PangoEngineShape    *engine,
		    PangoFont           *font,
		    const char          *text,
		    gint                 length,
		    const PangoAnalysis *analysis,
		    PangoGlyphString    *glyphs)
{
  const char *p;
  char *copy;
  CTLineRef line;
  CFStringRef cstr;
  CFDictionaryRef attributes;
  CFAttributedStringRef attstr;
  PangoCoreTextFont *cfont = PANGO_CORE_TEXT_FONT (font);
  PangoCoverage *coverage;
  CFArrayRef runs;
  CTRunRef run;
  CTRunStatus run_status;
  CFIndex i, glyph_count;
  const CGGlyph *cgglyphs;

  CFTypeRef keys[] = {
      (CFTypeRef) kCTFontAttributeName
  };

  CFTypeRef values[] = {
      pango_core_text_font_get_ctfont (cfont)
  };

  attributes = CFDictionaryCreate (kCFAllocatorDefault,
                                   (const void **)keys,
                                   (const void **)values,
                                   1,
                                   &kCFCopyStringDictionaryKeyCallBacks,
                                   &kCFTypeDictionaryValueCallBacks);

  copy = g_strndup (text, length + 1);
  copy[length] = 0;

  cstr = CFStringCreateWithCString (kCFAllocatorDefault, copy,
                                    kCFStringEncodingUTF8);
  g_free (copy);

  attstr = CFAttributedStringCreate (kCFAllocatorDefault,
                                     cstr,
                                     attributes);

  line = CTLineCreateWithAttributedString (attstr);

  runs = CTLineGetGlyphRuns (line);

  /* Since Pango divides things into runs already, we assume there is
   * only a single run in this line.
   */
  run = CFArrayGetValueAtIndex (runs, 0);
  run_status = CTRunGetStatus (run);
  glyph_count = CTRunGetGlyphCount (run);
  cgglyphs = CTRunGetGlyphsPtr (run);

  p = text;
  pango_glyph_string_set_size (glyphs, glyph_count);
  coverage = pango_font_get_coverage (PANGO_FONT (cfont),
                                      analysis->language);

  for (i = 0; i < glyph_count; i++)
    {
      CFIndex real_i, prev_i;
      gunichar wc;
      gunichar mirrored_ch;

      wc = g_utf8_get_char (p);

      if (analysis->level % 2)
	if (pango_get_mirror_char (wc, &mirrored_ch))
	  wc = mirrored_ch;

      if (run_status & kCTRunStatusRightToLeft)
        {
          real_i = glyph_count - i - 1;
          prev_i = real_i + 1;
        }
      else
        {
          real_i = i;
          prev_i = real_i - 1;
        }

      if (wc == 0xa0)	/* non-break-space */
	wc = 0x20;

      if (pango_is_zero_width (wc))
	{
	  set_glyph (font, glyphs, real_i, p - text, PANGO_GLYPH_EMPTY);
	}
      else
	{
          PangoCoverageLevel result;

          result = pango_coverage_get (coverage, wc);

          if (result != PANGO_COVERAGE_NONE)
            {
              set_glyph (font, glyphs, real_i, p - text, cgglyphs[real_i]);

              if (g_unichar_type (wc) == G_UNICODE_NON_SPACING_MARK)
                {
                  if (i > 0)
                    {
                      PangoRectangle logical_rect, ink_rect;

                      glyphs->glyphs[real_i].geometry.width = MAX (glyphs->glyphs[prev_i].geometry.width,
                                                                   glyphs->glyphs[prev_i].geometry.width);
                      glyphs->glyphs[prev_i].geometry.width = 0;
                      glyphs->log_clusters[real_i] = glyphs->log_clusters[prev_i];

                      /* Some heuristics to try to guess how overstrike glyphs are
                       * done and compensate
                       */
                      pango_font_get_glyph_extents (font, glyphs->glyphs[real_i].glyph, &ink_rect, &logical_rect);
                      if (logical_rect.width == 0 && ink_rect.x == 0)
                        glyphs->glyphs[real_i].geometry.x_offset = (glyphs->glyphs[real_i].geometry.width - ink_rect.width) / 2;
                    }
                }
            }
          else
            {
              set_glyph (font, glyphs, real_i, p - text,
                         PANGO_GET_UNKNOWN_GLYPH (wc));
            }
        }

      p = g_utf8_next_char (p);
    }

  CFRelease (line);
  CFRelease (attstr);
  CFRelease (cstr);
  CFRelease (attributes);
  pango_coverage_unref (coverage);
}