Module: Pango

Defined in:
lib/pango.rb,
ext/pango/rbpango.c

Defined Under Namespace

Modules: Gravity Classes: AttrBool, AttrColor, AttrFloat, AttrInt, AttrList, AttrString, Attribute

Constant Summary collapse

LOG_DOMAIN = 
"Pango"
BUILD_VERSION = 
rb_ary_new3(3, 
INT2FIX(PANGO_MAJOR_VERSION), 
INT2FIX(PANGO_MINOR_VERSION), 
INT2FIX(PANGO_MICRO_VERSION))
SCALE = 
INT2FIX(PANGO_SCALE)

Class Method Summary collapse

Class Method Details

.break(text, analysis) ⇒ Object 



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# File 'ext/pango/rbpangomain.c', line 53

static VALUE
rpango_break(VALUE self, VALUE text, VALUE analysis)
{
    gint i, len;
    glong attrs_len;
    PangoLogAttr *attrs;
    const gchar *gtext;
    VALUE ret;

    gtext = StringValuePtr(text);
    len = RSTRING_LEN(text);
    attrs_len = g_utf8_strlen(gtext, (gssize)len) + 1l;
    attrs = g_new0(PangoLogAttr, attrs_len);

    pango_break(gtext, len,
                NIL_P(analysis) ? NULL : RVAL2BOXED(analysis, PANGO_TYPE_ANALYSIS),
                attrs, attrs_len);

    ret = rb_ary_new();
    for (i = 0; i < attrs_len; i++){
        rb_ary_push(ret, BOXED2RVAL(&attrs[i], PANGO_TYPE_LOG_ATTR));
    }
    g_free(attrs);
    return ret;
}

.cairo_available? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/pango/rbpangocairo.c', line 152

static VALUE
cairo_available_p(VALUE self)
{
#if CAIRO_AVAILABLE
    return Qtrue;
#else
    return Qfalse;
#endif
}

.find_base_dir(text) ⇒ Object 



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# File 'ext/pango/rbpangomain.c', line 44

static VALUE
rpango_find_base_dir(VALUE self, VALUE text)
{
    StringValue(text);
    return GENUM2RVAL(pango_find_base_dir(RSTRING_PTR(text), RSTRING_LEN(text)), 
                      PANGO_TYPE_DIRECTION);
}

.find_paragraph_boundary(text) ⇒ Object 



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# File 'ext/pango/rbpangomain.c', line 105

static VALUE
rpango_find_paragraph_boundary(VALUE self, VALUE text)
{
    gint paragraph_delimiter_index, next_paragraph_start;
    
    StringValue(text);
    pango_find_paragraph_boundary(RSTRING_PTR(text), RSTRING_LEN(text),
                                  &paragraph_delimiter_index,
                                  &next_paragraph_start);
    return rb_ary_new3(2, INT2NUM(paragraph_delimiter_index), 
                       INT2NUM(next_paragraph_start));
}

.get_log_attrs(text, level, language) ⇒ Object 



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# File 'ext/pango/rbpangomain.c', line 79

static VALUE
rpango_get_log_attrs(VALUE self, VALUE text, VALUE level, VALUE language)
{
    gint i, len;
    glong attrs_len;
    PangoLogAttr *attrs;
    const gchar *gtext;
    VALUE ret;

    gtext = StringValuePtr(text);
    len = RSTRING_LEN(text);
    attrs_len = g_utf8_strlen(gtext, (gssize)len) + 1l;
    attrs = g_new0(PangoLogAttr, attrs_len);

    pango_get_log_attrs(gtext, len, NUM2INT(level),
                        RVAL2BOXED(language, PANGO_TYPE_LANGUAGE),
                        attrs, attrs_len);

    ret = rb_ary_new();
    for (i = 0; i < attrs_len; i++){
        rb_ary_push(ret, BOXED2RVAL(&attrs[i], PANGO_TYPE_LOG_ATTR));
    }
    g_free(attrs);
    return ret;
}

.parse_markup(*args) ⇒ Object

This method is from rbpangoattribute.c



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# File 'ext/pango/rbpangomain.c', line 140

static VALUE
rpango_parse_markup(int argc, VALUE *argv, VALUE self)
{
    VALUE markup_text, accel_marker;
    PangoAttrList *pattr_list;
    gchar* gtext;
    gunichar accel_char;
    GError *error = NULL;
    gboolean ret;
    char c;
    VALUE text = Qnil;
    VALUE attr_list = Qnil;

    rb_scan_args(argc, argv, "11", &markup_text, &accel_marker);

    if (NIL_P(markup_text)) rb_raise(rb_eRuntimeError, "1st argument can't accept nil");

    StringValue(markup_text);
    ret = pango_parse_markup(RSTRING_PTR(markup_text),
                             RSTRING_LEN(markup_text),
                             NIL_P(accel_marker) ? 0 : NUM2CHR(accel_marker),
                             &pattr_list, &gtext, &accel_char, &error);

    if (!ret) RAISE_GERROR(error);

    if (pattr_list){
        attr_list = BOXED2RVAL(pattr_list, PANGO_TYPE_ATTR_LIST); 
        pango_attr_list_unref(pattr_list);
    }

    c = (char)accel_char;
    if (text){
        text = CSTR2RVAL(gtext);
        g_free(gtext);
    }
    return rb_ary_new3(3, attr_list, text,
                       accel_char ? rb_str_new(&c, 1) : Qnil);
}

.pixels(pixels) ⇒ Object 



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# File 'ext/pango/rbpangomain.c', line 179

static VALUE
rpango_pixels(VALUE self, VALUE pixels)
{
    return rb_float_new(PANGO_PIXELS(NUM2DBL(pixels)));
}

.reorder_items(logical_items) ⇒ Object

Rendering



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# File 'ext/pango/rbpangomain.c', line 18

static VALUE
rpango_reorder_items(VALUE self, VALUE logical_items)
{
    int i;
    GList *glist = NULL;
    GList* ret;

    Check_Type(logical_items, T_ARRAY);

    for (i = 0; i < RARRAY_LEN(logical_items); i++){
        glist = g_list_append(glist, RVAL2BOXED(RARRAY_PTR(logical_items)[i], PANGO_TYPE_ITEM));
    }

    ret = pango_reorder_items(glist);
    g_list_free(glist);

    return GLIST2ARY2(ret, PANGO_TYPE_ITEM);
}

.shape(text, analysis) ⇒ Object

Don’t need to implement this. Use pango_break instead. void pango_default_break (const gchar *text,

int length,
PangoAnalysis *analysis,
PangoLogAttr *attrs,
int attrs_len);



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# File 'ext/pango/rbpangomain.c', line 127

static VALUE
rpango_shape(VALUE self, VALUE text, VALUE analysis)
{
    VALUE ret;
    PangoGlyphString* glyphs = pango_glyph_string_new();
    StringValue(text);
    pango_shape(RSTRING_PTR(text), RSTRING_LEN(text), RVAL2BOXED(analysis, PANGO_TYPE_ANALYSIS), glyphs);
    ret = BOXED2RVAL(glyphs, PANGO_TYPE_GLYPH_STRING);
    pango_glyph_string_free (glyphs);
    return ret;
}

.unichar_direction(ch) ⇒ Object 



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# File 'ext/pango/rbpangomain.c', line 38

static VALUE
rpango_unichar_direction(VALUE self, VALUE ch)
{
    return GENUM2RVAL(pango_unichar_direction(NUM2UINT(ch)), PANGO_TYPE_DIRECTION);
}