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Diffstat (limited to 'pango2/pango-attributes.c')
| -rw-r--r-- | pango2/pango-attributes.c | 866 |
1 files changed, 866 insertions, 0 deletions
diff --git a/pango2/pango-attributes.c b/pango2/pango-attributes.c new file mode 100644 index 00000000..ea782a07 --- /dev/null +++ b/pango2/pango-attributes.c @@ -0,0 +1,866 @@ +/* Pango2 + * pango-attributes.c: Attributed text + * + * Copyright (C) 2000-2002 Red Hat Software + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#include "config.h" +#include <string.h> + +#include "pango-attributes-private.h" +#include "pango-attr-private.h" +#include "pango-impl-utils.h" + +/* {{{ Attribute value types */ + +static inline Pango2Attribute * +pango2_attr_init (Pango2AttrType type) +{ + Pango2Attribute *attr; + + attr = g_slice_new (Pango2Attribute); + attr->type = type; + attr->start_index = PANGO2_ATTR_INDEX_FROM_TEXT_BEGINNING; + attr->end_index = PANGO2_ATTR_INDEX_TO_TEXT_END; + + return attr; +} + +static inline Pango2Attribute * +pango2_attr_string_new (Pango2AttrType type, + const char *value) +{ + Pango2Attribute *attr; + + g_return_val_if_fail (PANGO2_ATTR_TYPE_VALUE_TYPE (type) == PANGO2_ATTR_VALUE_STRING, NULL); + + attr = pango2_attr_init (type); + attr->str_value = g_strdup (value); + + return attr; +} + +static inline Pango2Attribute * +pango2_attr_int_new (Pango2AttrType type, + int value) +{ + Pango2Attribute *attr; + + g_return_val_if_fail (PANGO2_ATTR_TYPE_VALUE_TYPE (type) == PANGO2_ATTR_VALUE_INT, NULL); + + attr = pango2_attr_init (type); + attr->int_value = value; + + return attr; +} + +static inline Pango2Attribute * +pango2_attr_boolean_new (Pango2AttrType type, + gboolean value) +{ + Pango2Attribute *attr; + + g_return_val_if_fail (PANGO2_ATTR_TYPE_VALUE_TYPE (type) == PANGO2_ATTR_VALUE_BOOLEAN, NULL); + + attr = pango2_attr_init (type); + attr->boolean_value = value; + + return attr; +} + +static inline Pango2Attribute * +pango2_attr_float_new (Pango2AttrType type, + double value) +{ + Pango2Attribute *attr; + + g_return_val_if_fail (PANGO2_ATTR_TYPE_VALUE_TYPE (type) == PANGO2_ATTR_VALUE_FLOAT, NULL); + + attr = pango2_attr_init (type); + attr->double_value = value; + + return attr; +} + +static inline Pango2Attribute * +pango2_attr_color_new (Pango2AttrType type, + Pango2Color *color) +{ + Pango2Attribute *attr; + + g_return_val_if_fail (PANGO2_ATTR_TYPE_VALUE_TYPE (type) == PANGO2_ATTR_VALUE_COLOR, NULL); + + attr = pango2_attr_init (type); + attr->color_value = *color; + + return attr; +} + +static inline Pango2Attribute * +pango2_attr_lang_new (Pango2AttrType type, + Pango2Language *value) +{ + Pango2Attribute *attr; + + g_return_val_if_fail (PANGO2_ATTR_TYPE_VALUE_TYPE (type) == PANGO2_ATTR_VALUE_LANGUAGE, NULL); + + attr = pango2_attr_init (type); + attr->lang_value = value; + + return attr; +} + +static inline Pango2Attribute * +pango2_attr_font_description_new (Pango2AttrType type, + const Pango2FontDescription *value) +{ + Pango2Attribute *attr; + + g_return_val_if_fail (PANGO2_ATTR_TYPE_VALUE_TYPE (type) == PANGO2_ATTR_VALUE_FONT_DESC, NULL); + + attr = pango2_attr_init (type); + attr->font_value = pango2_font_description_copy (value); + + return attr; +} + +/* }}} */ +/* {{{ Attribute types */ + +/** + * pango2_attr_family_new: + * @family: the family or comma-separated list of families + * + * Create a new font family attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_family_new (const char *family) +{ + return pango2_attr_string_new (PANGO2_ATTR_FAMILY, family); +} + +/** + * pango2_attr_language_new: + * @language: language tag + * + * Create a new language tag attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_language_new (Pango2Language *language) +{ + return pango2_attr_lang_new (PANGO2_ATTR_LANGUAGE, language); +} + +/** + * pango2_attr_foreground_new: + * @color: the color + * + * Create a new foreground color attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_foreground_new (Pango2Color *color) +{ + return pango2_attr_color_new (PANGO2_ATTR_FOREGROUND, color); +} + +/** + * pango2_attr_background_new: + * @color: the color + * + * Create a new background color attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_background_new (Pango2Color *color) +{ + return pango2_attr_color_new (PANGO2_ATTR_BACKGROUND, color); +} + +/** + * pango2_attr_size_new: + * @size: the font size, in %PANGO2_SCALE-ths of a point + * + * Create a new font-size attribute in fractional points. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_size_new (int value) +{ + return pango2_attr_int_new (PANGO2_ATTR_SIZE, value); +} + + +/** + * pango2_attr_size_new_absolute: + * @size: the font size, in %PANGO2_SCALE-ths of a device unit + * + * Create a new font-size attribute in device units. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_size_new_absolute (int size) +{ + return pango2_attr_int_new (PANGO2_ATTR_ABSOLUTE_SIZE, size); +} + +/** + * pango2_attr_style_new: + * @style: the slant style + * + * Create a new font slant style attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_style_new (Pango2Style style) +{ + return pango2_attr_int_new (PANGO2_ATTR_STYLE, (int)style); +} + +/** + * pango2_attr_weight_new: + * @weight: the weight + * + * Create a new font weight attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_weight_new (Pango2Weight weight) +{ + return pango2_attr_int_new (PANGO2_ATTR_WEIGHT, (int)weight); +} + +/** + * pango2_attr_variant_new: + * @variant: the variant + * + * Create a new font variant attribute (normal or small caps). + * + * Return value: (transfer full): the newly allocated `Pango2Attribute`, + * which should be freed with [method@Pango2.Attribute.destroy]. + */ +Pango2Attribute * +pango2_attr_variant_new (Pango2Variant variant) +{ + return pango2_attr_int_new (PANGO2_ATTR_VARIANT, (int)variant); +} + +/** + * pango2_attr_stretch_new: + * @stretch: the stretch + * + * Create a new font stretch attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_stretch_new (Pango2Stretch stretch) +{ + return pango2_attr_int_new (PANGO2_ATTR_STRETCH, (int)stretch); +} + +/** + * pango2_attr_font_desc_new: + * @desc: the font description + * + * Create a new font description attribute. + * + * This attribute allows setting family, style, weight, variant, + * stretch, and size simultaneously. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_font_desc_new (const Pango2FontDescription *desc) +{ + return pango2_attr_font_description_new (PANGO2_ATTR_FONT_DESC, desc); +} + +/** + * pango2_attr_underline_new: + * @style: the line style + * + * Create a new underline attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_underline_new (Pango2LineStyle style) +{ + return pango2_attr_int_new (PANGO2_ATTR_UNDERLINE, (int)style); +} + +/** + * pango2_attr_underline_color_new: + * @color: the color + * + * Create a new underline color attribute. + * + * This attribute modifies the color of underlines. + * If not set, underlines will use the foreground color. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_underline_color_new (Pango2Color *color) +{ + return pango2_attr_color_new (PANGO2_ATTR_UNDERLINE_COLOR, color); +} + +/** + * pango2_attr_underline_position_new: + * @position: the underline position + * + * Create a new underline position attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_underline_position_new (Pango2UnderlinePosition position) +{ + return pango2_attr_int_new (PANGO2_ATTR_UNDERLINE_POSITION, (int)position); +} +/** + * pango2_attr_strikethrough_new: + * @style: the line style + * + * Create a new strike-through attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_strikethrough_new (Pango2LineStyle style) +{ + return pango2_attr_int_new (PANGO2_ATTR_STRIKETHROUGH, (int)style); +} + +/** + * pango2_attr_strikethrough_color_new: + * @color: the color + * + * Create a new strikethrough color attribute. + * + * This attribute modifies the color of strikethrough lines. + * If not set, strikethrough lines will use the foreground color. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_strikethrough_color_new (Pango2Color *color) +{ + return pango2_attr_color_new (PANGO2_ATTR_STRIKETHROUGH_COLOR, color); +} + +/** + * pango2_attr_rise_new: + * @rise: the amount that the text should be displaced vertically, + * in Pango2 units. Positive values displace the text upwards. + * + * Create a new baseline displacement attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_rise_new (int rise) +{ + return pango2_attr_int_new (PANGO2_ATTR_RISE, (int)rise); +} + +/** + * pango2_attr_baseline_shift_new: + * @shift: either a `Pango2BaselineShift` enumeration value or an absolute value (> 1024) + * in Pango2 units, relative to the baseline of the previous run. + * Positive values displace the text upwards. + * + * Create a new baseline displacement attribute. + * + * The effect of this attribute is to shift the baseline of a run, + * relative to the run of preceding run. + * + * <picture> + * <source srcset="baseline-shift-dark.png" media="(prefers-color-scheme: dark)"> + * <img alt="Baseline Shift" src="baseline-shift-light.png"> + * </picture> + + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_baseline_shift_new (int rise) +{ + return pango2_attr_int_new (PANGO2_ATTR_BASELINE_SHIFT, (int)rise); +} + +/** + * pango2_attr_font_scale_new: + * @scale: a `Pango2FontScale` value, which indicates font size change relative + * to the size of the previous run. + * + * Create a new font scale attribute. + * + * The effect of this attribute is to change the font size of a run, + * relative to the size of preceding run. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_font_scale_new (Pango2FontScale scale) +{ + return pango2_attr_int_new (PANGO2_ATTR_FONT_SCALE, (int)scale); +} + +/** + * pango2_attr_scale_new: + * @scale_factor: factor to scale the font + * + * Create a new font size scale attribute. + * + * The base font for the affected text will have + * its size multiplied by @scale_factor. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute* +pango2_attr_scale_new (double scale_factor) +{ + return pango2_attr_float_new (PANGO2_ATTR_SCALE, scale_factor); +} + +/** + * pango2_attr_fallback_new: + * @enable_fallback: %TRUE if we should fall back on other fonts + * for characters the active font is missing + * + * Create a new font fallback attribute. + * + * If fallback is disabled, characters will only be + * used from the closest matching font on the system. + * No fallback will be done to other fonts on the system + * that might contain the characters in the text. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_fallback_new (gboolean enable_fallback) +{ + return pango2_attr_boolean_new (PANGO2_ATTR_FALLBACK, enable_fallback); +} + +/** + * pango2_attr_letter_spacing_new: + * @letter_spacing: amount of extra space to add between + * graphemes of the text, in Pango2 units + * + * Create a new letter-spacing attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_letter_spacing_new (int letter_spacing) +{ + return pango2_attr_int_new (PANGO2_ATTR_LETTER_SPACING, letter_spacing); +} + +/** + * pango2_attr_gravity_new: + * @gravity: the gravity value; should not be %PANGO2_GRAVITY_AUTO + * + * Create a new gravity attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_gravity_new (Pango2Gravity gravity) +{ + g_return_val_if_fail (gravity != PANGO2_GRAVITY_AUTO, NULL); + + return pango2_attr_int_new (PANGO2_ATTR_GRAVITY, (int)gravity); +} + +/** + * pango2_attr_gravity_hint_new: + * @hint: the gravity hint value + * + * Create a new gravity hint attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_gravity_hint_new (Pango2GravityHint hint) +{ + return pango2_attr_int_new (PANGO2_ATTR_GRAVITY_HINT, (int)hint); +} + +/** + * pango2_attr_font_features_new: + * @features: a string with OpenType font features, with the syntax of the [CSS + * font-feature-settings property](https://www.w3.org/TR/css-fonts-4/#font-rend-desc) + * + * Create a new font features tag attribute. + * + * You can use this attribute to select OpenType font features like small-caps, + * alternative glyphs, ligatures, etc. for fonts that support them. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_font_features_new (const char *features) +{ + g_return_val_if_fail (features != NULL, NULL); + + return pango2_attr_string_new (PANGO2_ATTR_FONT_FEATURES, features); +} + +/** + * pango2_attr_allow_breaks_new: + * @allow_breaks: %TRUE if we line breaks are allowed + * + * Create a new allow-breaks attribute. + * + * If breaks are disabled, the range will be kept in a + * single run, as far as possible. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_allow_breaks_new (gboolean allow_breaks) +{ + return pango2_attr_boolean_new (PANGO2_ATTR_ALLOW_BREAKS, allow_breaks); +} + +/** + * pango2_attr_insert_hyphens_new: + * @insert_hyphens: %TRUE if hyphens should be inserted + * + * Create a new insert-hyphens attribute. + * + * Pango2 will insert hyphens when breaking lines in + * the middle of a word. This attribute can be used + * to suppress the hyphen. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_insert_hyphens_new (gboolean insert_hyphens) +{ + return pango2_attr_boolean_new (PANGO2_ATTR_INSERT_HYPHENS, insert_hyphens); +} + +/** + * pango2_attr_show_new: + * @flags: `Pango2ShowFlags` to apply + * + * Create a new attribute that influences how invisible + * characters are rendered. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + **/ +Pango2Attribute * +pango2_attr_show_new (Pango2ShowFlags flags) +{ + return pango2_attr_int_new (PANGO2_ATTR_SHOW, (int)flags); +} + +/** + * pango2_attr_word_new: + * + * Create a new attribute that marks its range + * as a single word. + * + * Note that this may require adjustments to word and + * sentence classification around the range. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_word_new (void) +{ + return pango2_attr_boolean_new (PANGO2_ATTR_WORD, TRUE); +} + +/** + * pango2_attr_sentence_new: + * + * Create a new attribute that marks its range + * as a single sentence. + * + * Note that this may require adjustments to word and + * sentence classification around the range. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_sentence_new (void) +{ + return pango2_attr_boolean_new (PANGO2_ATTR_SENTENCE, TRUE); +} + +/** + * pango2_attr_paragraph_new: + * + * Create a new attribute that marks its range as a single paragraph. + * + * Newlines and similar characters in the range of the attribute + * will not be treated as paragraph separators. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_paragraph_new (void) +{ + return pango2_attr_boolean_new (PANGO2_ATTR_SENTENCE, TRUE); +} + +/** + * pango2_attr_overline_new: + * @style: the line style + * + * Create a new overline-style attribute. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_overline_new (Pango2LineStyle style) +{ + return pango2_attr_int_new (PANGO2_ATTR_OVERLINE, (int)style); +} + +/** + * pango2_attr_overline_color_new: + * @color: the color + * + * Create a new overline color attribute. + * + * This attribute modifies the color of overlines. + * If not set, overlines will use the foreground color. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_overline_color_new (Pango2Color *color) +{ + return pango2_attr_color_new (PANGO2_ATTR_OVERLINE_COLOR, color); +} + +/** + * pango2_attr_line_height_new: + * @factor: the scaling factor to apply to the logical height + * + * Create a new attribute that modifies the height + * of logical line extents by a factor. + * + * This affects the values returned by + * [method@Pango2.Line.get_extents] and + * [method@Pango2.LineIter.get_line_extents]. + */ +Pango2Attribute * +pango2_attr_line_height_new (double factor) +{ + return pango2_attr_float_new (PANGO2_ATTR_LINE_HEIGHT, factor); +} + +/** + * pango2_attr_line_height_new_absolute: + * @height: the line height, in %PANGO2_SCALE-ths of a point + * + * Create a new attribute that overrides the height + * of logical line extents to be @height. + * + * This affects the values returned by + * [method@Pango2.Line.get_extents], + * [method@Pango2.LineIter.get_line_extents]. + */ +Pango2Attribute * +pango2_attr_line_height_new_absolute (int height) +{ + return pango2_attr_int_new (PANGO2_ATTR_ABSOLUTE_LINE_HEIGHT, height); +} + +/** + * pango2_attr_line_spacing_new: + * @spacing: the line spacing, in %PANGO2_SCALE-ths of a point + * + * Create a new attribute that adds space to the + * leading from font metrics, if not overridden + * by line spacing attributes. + * + * This affects the values returned by + * [method@Pango2.Line.get_extents], + * [method@Pango2.LineIter.get_line_extents]. + */ +Pango2Attribute * +pango2_attr_line_spacing_new (int spacing) +{ + return pango2_attr_int_new (PANGO2_ATTR_LINE_SPACING, spacing); +} + +/** + * pango2_attr_text_transform_new: + * @transform: `Pango2TextTransform` to apply + * + * Create a new attribute that influences how characters + * are transformed during shaping. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_text_transform_new (Pango2TextTransform transform) +{ + return pango2_attr_int_new (PANGO2_ATTR_TEXT_TRANSFORM, transform); +} + +/** + * pango2_attr_shape_new: + * @ink_rect: ink rectangle to use for each character + * @logical_rect: logical rectangle to use for each character + * @data: user data + * @copy: (nullable): function to copy @data when the attribute + * is copied + * @destroy: (nullable): function to free @data when the attribute + * is freed + * + * Creates a new shape attribute. + * + * Shape attributes override the extents for a glyph and can + * trigger custom rendering in a `Pango2Renderer`. This might + * be used, for instance, for embedding a picture or a widget + * inside a `Pango2Layout`. + * + * Return value: (transfer full): the newly allocated + * `Pango2Attribute`, which should be freed with + * [method@Pango2.Attribute.destroy] + */ +Pango2Attribute * +pango2_attr_shape_new (Pango2Rectangle *ink_rect, + Pango2Rectangle *logical_rect, + gpointer data, + Pango2AttrDataCopyFunc copy, + GDestroyNotify destroy) +{ + Pango2Attribute *attr; + ShapeData *shape_data; + + shape_data = g_new0 (ShapeData, 1); + shape_data->ink_rect = *ink_rect; + shape_data->logical_rect = *logical_rect; + shape_data->data = data; + shape_data->copy = copy; + shape_data->destroy = destroy; + + attr = pango2_attr_init (PANGO2_ATTR_SHAPE); + attr->pointer_value = shape_data; + + return attr; +} + +/* }}} */ +/* {{{ Private API */ + +gboolean +pango2_attribute_affects_itemization (Pango2Attribute *attr, + gpointer data) +{ + return (PANGO2_ATTR_AFFECTS (attr) & PANGO2_ATTR_AFFECTS_ITEMIZATION) != 0; +} + +gboolean +pango2_attribute_affects_break_or_shape (Pango2Attribute *attr, + gpointer data) +{ + return (PANGO2_ATTR_AFFECTS (attr) & (PANGO2_ATTR_AFFECTS_BREAKING | + PANGO2_ATTR_AFFECTS_SHAPING)) != 0; +} + +/* }}} */ + +/* vim:set foldmethod=marker expandtab: */ |