diff options
Diffstat (limited to 'pango/pango-context.c')
| -rw-r--r-- | pango/pango-context.c | 178 |
1 files changed, 89 insertions, 89 deletions
diff --git a/pango/pango-context.c b/pango/pango-context.c index cbde4efd..f11ac213 100644 --- a/pango/pango-context.c +++ b/pango/pango-context.c @@ -50,7 +50,7 @@ struct _PangoContext struct _PangoContextClass { GObjectClass parent_class; - + }; static void pango_context_finalize (GObject *object); @@ -63,7 +63,7 @@ pango_context_init (PangoContext *context) context->base_dir = PANGO_DIRECTION_WEAK_LTR; context->resolved_gravity = context->base_gravity = PANGO_GRAVITY_SOUTH; context->gravity_hint = PANGO_GRAVITY_HINT_NATURAL; - + context->language = NULL; context->font_map = NULL; @@ -80,7 +80,7 @@ static void pango_context_class_init (PangoContextClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); - + object_class->finalize = pango_context_finalize; } @@ -97,14 +97,14 @@ pango_context_finalize (GObject *object) pango_font_description_free (context->font_desc); if (context->matrix) pango_matrix_free (context->matrix); - + G_OBJECT_CLASS (pango_context_parent_class)->finalize (object); } /** * pango_context_new: - * + * * Creates a new #PangoContext initialized to default value. * * This function is only useful when implementing a new backend @@ -116,9 +116,9 @@ pango_context_finalize (GObject *object) * If you are using Pango as part of a higher-level system, * that system may have it's own ways of create a #PangoContext. * For instance, the GTK+ toolkit has, among others, - * gdk_pango_context_get_for_screen(), and + * gdk_pango_context_get_for_screen(), and * gtk_widget_get_pango_context(). - * + * * Return value: the newly allocated #PangoContext, which should * be freed with g_object_unref(). **/ @@ -128,7 +128,7 @@ pango_context_new (void) PangoContext *context; context = g_object_new (PANGO_TYPE_CONTEXT, NULL); - + return context; } @@ -146,7 +146,7 @@ update_resolved_gravity (PangoContext *context) * @context: a #PangoContext * @matrix: a #PangoMatrix, or %NULL to unset any existing matrix. * (No matrix set is the same as setting the identity matrix.) - * + * * Sets the transformation matrix that will be applied when rendering * with this context. Note that reported metrics are in the user space * coordinates before the application of the matrix, not device-space @@ -198,7 +198,7 @@ pango_context_get_matrix (PangoContext *context) * pango_context_set_font_map: * @context: a #PangoContext * @font_map: the #PangoFontMap to set. - * + * * Sets the font map to be searched when fonts are looked-up in this context. * This is only for internal use by Pango backends, a #PangoContext obtained * via one of the recommended methods should already have a suitable font map. @@ -222,9 +222,9 @@ pango_context_set_font_map (PangoContext *context, /** * pango_context_get_font_map: * @context: a #PangoContext - * + * * Gets the #PangoFontmap used to look up fonts for this context. - * + * * Return value: the font map for the #PangoContext. This value * is owned by Pango and should not be unreferenced. * @@ -244,7 +244,7 @@ pango_context_get_font_map (PangoContext *context) * @families: location to store a pointer to an array of #PangoFontFamily *. * This array should be freed with g_free(). * @n_families: location to store the number of elements in @descs - * + * * List all families for a context. **/ void @@ -257,16 +257,16 @@ pango_context_list_families (PangoContext *context, if (n_families == NULL) return; - + if (context->font_map == NULL) { *n_families = 0; if (families) *families = NULL; - + return; } - else + else pango_font_map_list_families (context->font_map, families, n_families); } @@ -274,7 +274,7 @@ pango_context_list_families (PangoContext *context, * pango_context_load_font: * @context: a #PangoContext * @desc: a #PangoFontDescription describing the font to load - * + * * Loads the font in one of the fontmaps in the context * that is the closest match for @desc. * @@ -286,7 +286,7 @@ pango_context_load_font (PangoContext *context, { g_return_val_if_fail (context != NULL, NULL); g_return_val_if_fail (pango_font_description_get_family (desc) != NULL, NULL); - + return pango_font_map_load_font (context->font_map, context, desc); } @@ -295,7 +295,7 @@ pango_context_load_font (PangoContext *context, * @context: a #PangoContext * @desc: a #PangoFontDescription describing the fonts to load * @language: a #PangoLanguage the fonts will be used for - * + * * Load a set of fonts in the context that can be used to render * a font matching @desc. * @@ -317,7 +317,7 @@ pango_context_load_fontset (PangoContext *context, * pango_context_set_font_description: * @context: a #PangoContext * @desc: the new pango font description - * + * * Set the default font description for the context **/ void @@ -334,9 +334,9 @@ pango_context_set_font_description (PangoContext *context, /** * pango_context_get_font_description: * @context: a #PangoContext - * + * * Retrieve the default font description for the context. - * + * * Return value: a pointer to the context's default font description. * This value must not be modified or freed. **/ @@ -344,7 +344,7 @@ PangoFontDescription * pango_context_get_font_description (PangoContext *context) { g_return_val_if_fail (context != NULL, NULL); - + return context->font_desc; } @@ -352,7 +352,7 @@ pango_context_get_font_description (PangoContext *context) * pango_context_set_language: * @context: a #PangoContext * @language: the new language tag. - * + * * Sets the global language tag for the context. The default language * for the locale of the running process can be found using * pango_language_get_default(). @@ -369,9 +369,9 @@ pango_context_set_language (PangoContext *context, /** * pango_context_get_language: * @context: a #PangoContext - * + * * Retrieves the global language tag for the context. - * + * * Return value: the global language tag. **/ PangoLanguage * @@ -386,7 +386,7 @@ pango_context_get_language (PangoContext *context) * pango_context_set_base_dir: * @context: a #PangoContext * @direction: the new base direction - * + * * Sets the base direction for the context. * * The base direction is used in applying the Unicode bidirectional @@ -394,7 +394,7 @@ pango_context_get_language (PangoContext *context) * %PANGO_DIRECTION_RTL, then the value will be used as the paragraph * direction in the Unicode bidirectional algorithm. A value of * %PANGO_DIRECTION_WEAK_LTR or %PANGO_DIRECTION_WEAK_RTL is used only - * for paragraphs that do not contain any strong characters themselves. + * for paragraphs that do not contain any strong characters themselves. **/ void pango_context_set_base_dir (PangoContext *context, @@ -408,10 +408,10 @@ pango_context_set_base_dir (PangoContext *context, /** * pango_context_get_base_dir: * @context: a #PangoContext - * + * * Retrieves the base direction for the context. See * pango_context_set_base_dir(). - * + * * Return value: the base direction for the context. **/ PangoDirection @@ -426,7 +426,7 @@ pango_context_get_base_dir (PangoContext *context) * pango_context_set_base_gravity: * @context: a #PangoContext * @gravity: the new base gravity - * + * * Sets the base gravity for the context. * * The base gravity is used in laying vertical text out. @@ -447,10 +447,10 @@ pango_context_set_base_gravity (PangoContext *context, /** * pango_context_get_base_gravity: * @context: a #PangoContext - * + * * Retrieves the base gravity for the context. See * pango_context_set_base_gravity(). - * + * * Return value: the base gravity for the context. * * Since: 1.16 @@ -466,12 +466,12 @@ pango_context_get_base_gravity (PangoContext *context) /** * pango_context_get_gravity: * @context: a #PangoContext - * + * * Retrieves the gravity for the context. This is similar to * pango_context_get_base_gravity(), except for when the base gravity * is %PANGO_GRAVITY_AUTO for which pango_gravity_get_for_matrix() is used * to return the gravity from the current context matrix. - * + * * Return value: the resolved gravity for the context. * * Since: 1.16 @@ -488,7 +488,7 @@ pango_context_get_gravity (PangoContext *context) * pango_context_set_gravity_hint: * @context: a #PangoContext * @hint: the new gravity hint - * + * * Sets the gravity hint for the context. * * The gravity hint is used in laying vertical text out, and is only relevant @@ -509,10 +509,10 @@ pango_context_set_gravity_hint (PangoContext *context, /** * pango_context_get_gravity_hint: * @context: a #PangoContext - * + * * Retrieves the gravity hint for the context. See * pango_context_set_gravity_hint() for details. - * + * * Return value: the gravity hint for the context. * * Since: 1.16 @@ -532,7 +532,7 @@ advance_attr_iterator_to (PangoAttrIterator *iterator, int start_index) { int start_range, end_range; - + pango_attr_iterator_range (iterator, &start_range, &end_range); while (start_index >= end_range) @@ -581,11 +581,11 @@ static ShaperFontCache * get_shaper_font_cache (PangoFontset *fontset) { ShaperFontCache *cache; - + static GQuark cache_quark = 0; if (!cache_quark) cache_quark = g_quark_from_static_string ("pango-shaper-font-cache"); - + cache = g_object_get_qdata (G_OBJECT (fontset), cache_quark); if (!cache) { @@ -607,7 +607,7 @@ shaper_font_cache_get (ShaperFontCache *cache, PangoFont **font) { ShaperFontElement *element; - + element = g_hash_table_lookup (cache->hash, GUINT_TO_POINTER (wc)); if (element) { @@ -629,7 +629,7 @@ shaper_font_cache_insert (ShaperFontCache *cache, ShaperFontElement *element = g_slice_new (ShaperFontElement); element->shape_engine = shape_engine; element->font = font; - + g_hash_table_insert (cache->hash, GUINT_TO_POINTER (wc), element); } @@ -650,7 +650,7 @@ struct _ItemizeState PangoContext *context; const char *text; const char *end; - + const char *run_start; const char *run_end; @@ -677,19 +677,19 @@ struct _ItemizeState gboolean copy_extra_attrs; ChangedFlags changed; - + PangoScriptIter *script_iter; const char *script_end; PangoScript script; PangoLanguage *derived_lang; PangoEngineLang *lang_engine; - + PangoFontset *current_fonts; ShaperFontCache *cache; PangoFont *base_font; gboolean enable_fallback; - + GSList *exact_engines; GSList *fallback_engines; }; @@ -704,7 +704,7 @@ update_embedding_end (ItemizeState *state) state->embedding_end_offset++; state->embedding_end = g_utf8_next_char (state->embedding_end); } - + state->changed |= EMBEDDING_CHANGED; } @@ -713,7 +713,7 @@ find_attribute (GSList *attr_list, PangoAttrType type) { GSList *node; - + for (node = attr_list; node; node = node->next) if (((PangoAttribute *) node->data)->klass->type == type) return (PangoAttribute *) node->data; @@ -727,7 +727,7 @@ update_attr_iterator (ItemizeState *state) PangoLanguage *old_lang; PangoAttribute *attr; int end_index; - + pango_attr_iterator_range (state->attr_iter, NULL, &end_index); if (end_index < state->end - state->text) state->attr_end = state->text + end_index; @@ -749,7 +749,7 @@ update_attr_iterator (ItemizeState *state) if (!state->lang) state->lang = state->context->language; - + attr = find_attribute (state->extra_attrs, PANGO_ATTR_FALLBACK); state->enable_fallback = (attr == NULL || ((PangoAttrInt *)attr)->value); @@ -776,7 +776,7 @@ update_end (ItemizeState *state) static void itemize_state_init (ItemizeState *state, - PangoContext *context, + PangoContext *context, const char *text, PangoDirection base_dir, int start_index, @@ -794,12 +794,12 @@ itemize_state_init (ItemizeState *state, state->item = NULL; state->run_start = text + start_index; - + /* First, apply the bidirectional algorithm to break * the text into directional runs. */ state->embedding_levels = pango_log2vis_get_embedding_levels (text + start_index, length, &base_dir); - + state->embedding_end_offset = 0; state->embedding_end = text + start_index; update_embedding_end (state); @@ -836,7 +836,7 @@ itemize_state_init (ItemizeState *state, state->lang = state->context->language; state->extra_attrs = NULL; state->copy_extra_attrs = FALSE; - + state->attr_end = state->end; state->enable_fallback = TRUE; } @@ -865,7 +865,7 @@ itemize_state_init (ItemizeState *state, state->exact_engines = NULL; state->fallback_engines = NULL; state->base_font = NULL; - + state->changed = EMBEDDING_CHANGED | SCRIPT_CHANGED | LANG_CHANGED | FONT_CHANGED; } @@ -908,7 +908,7 @@ copy_attr_slist (GSList *attr_slist) { GSList *new_list = NULL; GSList *l; - + for (l = attr_slist; l; l = l->next) new_list = g_slist_prepend (new_list, pango_attribute_copy (l->data)); @@ -921,7 +921,7 @@ itemize_state_fill_shaper (ItemizeState *state, PangoFont *font) { GList *l; - + for (l = state->result; l; l = l->next) { PangoItem *item = l->data; @@ -976,7 +976,7 @@ itemize_state_add_character (ItemizeState *state, if (font) g_object_ref (font); state->item->analysis.font = font; - + state->item->analysis.level = state->embedding; state->item->analysis.gravity = state->resolved_gravity; @@ -1014,7 +1014,7 @@ itemize_state_add_character (ItemizeState *state, state->item->analysis.flags = state->centered_baseline ? PANGO_ANALYSIS_FLAG_CENTERED_BASELINE : 0; state->item->analysis.language = state->derived_lang; - + if (state->copy_extra_attrs) { state->item->analysis.extra_attrs = copy_attr_slist (state->extra_attrs); @@ -1124,7 +1124,7 @@ get_shaper_and_font (ItemizeState *state, info.engines = state->exact_engines; if (state->enable_fallback) pango_fontset_foreach (state->current_fonts, get_shaper_and_font_foreach, &info); - else + else get_shaper_and_font_foreach (NULL, get_base_font (state), &info); if (info.shape_engine) @@ -1142,7 +1142,7 @@ get_shaper_and_font (ItemizeState *state, info.engines = state->fallback_engines; if (state->enable_fallback) pango_fontset_foreach (state->current_fonts, get_shaper_and_font_foreach, &info); - else + else get_shaper_and_font_foreach (NULL, get_base_font (state), &info); *shape_engine = info.shape_engine; @@ -1151,7 +1151,7 @@ get_shaper_and_font (ItemizeState *state, /* skip caching if fallback disabled (see above) */ if (state->enable_fallback) shaper_font_cache_insert (state->cache, wc, *shape_engine, *font); - + return *shape_engine != NULL; } @@ -1169,7 +1169,7 @@ compute_derived_language (PangoLanguage *lang, PangoScript script) { PangoLanguage *derived_lang; - + /* Make sure the language tag is consistent with the derived * script. There is no point in marking up a section of * Arabic text with the "en" language tag. @@ -1198,13 +1198,13 @@ get_lang_map (PangoLanguage *lang) { static guint engine_type_id = 0; static guint render_type_id = 0; - + if (engine_type_id == 0) { engine_type_id = g_quark_from_static_string (PANGO_ENGINE_TYPE_LANG); render_type_id = g_quark_from_static_string (PANGO_RENDER_TYPE_NONE); } - + return pango_find_map (lang, engine_type_id, render_type_id); } @@ -1250,7 +1250,7 @@ itemize_state_update_for_new_run (ItemizeState *state) if (old_derived_lang != state->derived_lang) state->changed |= DERIVED_LANG_CHANGED; } - + if ((state->changed & DERIVED_LANG_CHANGED) || !state->lang_engine) { PangoMap *lang_map = get_lang_map (state->derived_lang); @@ -1259,7 +1259,7 @@ itemize_state_update_for_new_run (ItemizeState *state) if (state->changed & (SCRIPT_CHANGED | DERIVED_LANG_CHANGED)) itemize_state_reset_shape_engines (state); - + if (state->changed & (FONT_CHANGED | DERIVED_LANG_CHANGED) && state->current_fonts) { @@ -1339,12 +1339,12 @@ itemize_state_process_run (ItemizeState *state) { get_shaper_and_font (state, wc, &shape_engine, &font); } - + itemize_state_add_character (state, shape_engine, font, is_forced_break || last_was_forced_break, p); - + last_was_forced_break = is_forced_break; } @@ -1354,7 +1354,7 @@ itemize_state_process_run (ItemizeState *state) { PangoEngineShape *shape_engine; PangoFont *font; - + if (!get_shaper_and_font (state, ' ', &shape_engine, &font)) { shape_engine = _pango_get_fallback_shaper (); @@ -1404,7 +1404,7 @@ itemize_state_finish (ItemizeState *state) * Since: 1.4 */ GList * -pango_itemize_with_base_dir (PangoContext *context, +pango_itemize_with_base_dir (PangoContext *context, PangoDirection base_dir, const char *text, int start_index, @@ -1424,18 +1424,18 @@ pango_itemize_with_base_dir (PangoContext *context, itemize_state_init (&state, context, text, base_dir, start_index, length, attrs, cached_iter, NULL); - - do + + do itemize_state_process_run (&state); while (itemize_state_next (&state)); itemize_state_finish (&state); - + return g_list_reverse (state.result); } static GList * -itemize_with_font (PangoContext *context, +itemize_with_font (PangoContext *context, const char *text, int start_index, int length, @@ -1449,12 +1449,12 @@ itemize_with_font (PangoContext *context, itemize_state_init (&state, context, text, context->base_dir, start_index, length, NULL, NULL, desc); - do + do itemize_state_process_run (&state); while (itemize_state_next (&state)); itemize_state_finish (&state); - + return g_list_reverse (state.result); } @@ -1484,7 +1484,7 @@ itemize_with_font (PangoContext *context, * Return value: a #GList of #PangoItem structures. */ GList * -pango_itemize (PangoContext *context, +pango_itemize (PangoContext *context, const char *text, int start_index, int length, @@ -1538,7 +1538,7 @@ static void update_metrics_from_items (PangoFontMetrics *metrics, PangoLanguage *language, GList *items) - + { GHashTable *fonts_seen = g_hash_table_new (NULL, NULL); int count = 0; @@ -1557,14 +1557,14 @@ update_metrics_from_items (PangoFontMetrics *metrics, /* metrics will already be initialized from the first font in the fontset */ metrics->ascent = MAX (metrics->ascent, raw_metrics->ascent); metrics->descent = MAX (metrics->descent, raw_metrics->descent); - + if (count == 0) { metrics->approximate_char_width = raw_metrics->approximate_char_width; metrics->approximate_digit_width = raw_metrics->approximate_digit_width; } else - { + { metrics->approximate_char_width += raw_metrics->approximate_char_width; metrics->approximate_digit_width += raw_metrics->approximate_digit_width; } @@ -1572,9 +1572,9 @@ update_metrics_from_items (PangoFontMetrics *metrics, pango_font_metrics_unref (raw_metrics); } } - + g_hash_table_destroy (fonts_seen); - + if (count) { metrics->approximate_char_width /= count; @@ -1592,7 +1592,7 @@ update_metrics_from_items (PangoFontMetrics *metrics, * large enough to cover a range of languages will be returned. * The process of determining such metrics is slow, so it is best * to always make sure some real language tag will be used. - * + * * Get overall metric information for a particular font * description. Since the metrics may be substantially different for * different scripts, a language tag can be provided to indicate that @@ -1618,7 +1618,7 @@ pango_context_get_metrics (PangoContext *context, PangoFontMetrics *metrics; const char *sample_str; GList *items; - + g_return_val_if_fail (PANGO_IS_CONTEXT (context), NULL); g_return_val_if_fail (desc != NULL, NULL); @@ -1627,15 +1627,15 @@ pango_context_get_metrics (PangoContext *context, current_fonts = pango_font_map_load_fontset (context->font_map, context, desc, language); metrics = get_base_metrics (current_fonts); - + sample_str = pango_language_get_sample_string (language); items = itemize_with_font (context, sample_str, 0, strlen (sample_str), desc); - update_metrics_from_items (metrics, language, items); + update_metrics_from_items (metrics, language, items); g_list_foreach (items, (GFunc)pango_item_free, NULL); g_list_free (items); - + g_object_unref (current_fonts); return metrics; |