/* GTK - The GIMP Toolkit * Copyright (C) 2010 Carlos Garnacho * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser 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 #include #include #include #include "gtkanimationdescription.h" #include "gtkcssprovider.h" #include "gtkalias.h" typedef struct GtkCssProviderPrivate GtkCssProviderPrivate; typedef struct SelectorElement SelectorElement; typedef struct SelectorPath SelectorPath; typedef struct SelectorStyleInfo SelectorStyleInfo; typedef enum SelectorElementType SelectorElementType; typedef enum CombinatorType CombinatorType; typedef enum ParserScope ParserScope; typedef enum ParserSymbol ParserSymbol; enum SelectorElementType { SELECTOR_TYPE_NAME, SELECTOR_NAME, SELECTOR_GTYPE, SELECTOR_REGION, SELECTOR_CLASS, SELECTOR_GLOB }; enum CombinatorType { COMBINATOR_DESCENDANT, /* No direct relation needed */ COMBINATOR_CHILD /* Direct child */ }; struct SelectorElement { SelectorElementType elem_type; CombinatorType combinator; union { GQuark name; GType type; struct { GQuark name; GtkRegionFlags flags; } region; }; }; struct SelectorPath { GSList *elements; GtkStateFlags state; guint ref_count; }; struct SelectorStyleInfo { SelectorPath *path; GHashTable *style; }; struct GtkCssProviderPrivate { GScanner *scanner; gchar *filename; GHashTable *symbolic_colors; GPtrArray *selectors_info; /* Current parser state */ GSList *state; GSList *cur_selectors; GHashTable *cur_properties; }; enum ParserScope { SCOPE_SELECTOR, SCOPE_PSEUDO_CLASS, SCOPE_NTH_CHILD, SCOPE_DECLARATION, SCOPE_VALUE }; /* Extend GtkStateType, since these * values are also used as symbols */ enum ParserSymbol { /* Scope: pseudo-class */ SYMBOL_NTH_CHILD = GTK_STATE_LAST, SYMBOL_FIRST_CHILD, SYMBOL_LAST_CHILD, /* Scope: nth-child */ SYMBOL_NTH_CHILD_EVEN, SYMBOL_NTH_CHILD_ODD, SYMBOL_NTH_CHILD_FIRST, SYMBOL_NTH_CHILD_LAST }; static void gtk_css_provider_finalize (GObject *object); static void gtk_css_style_provider_iface_init (GtkStyleProviderIface *iface); static void css_provider_apply_scope (GtkCssProvider *css_provider, ParserScope scope); static gboolean css_provider_parse_value (const gchar *value_str, GValue *value); G_DEFINE_TYPE_EXTENDED (GtkCssProvider, gtk_css_provider, G_TYPE_OBJECT, 0, G_IMPLEMENT_INTERFACE (GTK_TYPE_STYLE_PROVIDER, gtk_css_style_provider_iface_init)); static void gtk_css_provider_class_init (GtkCssProviderClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->finalize = gtk_css_provider_finalize; g_type_class_add_private (object_class, sizeof (GtkCssProviderPrivate)); } static SelectorPath * selector_path_new (void) { SelectorPath *path; path = g_slice_new0 (SelectorPath); path->ref_count = 1; return path; } static SelectorPath * selector_path_ref (SelectorPath *path) { path->ref_count++; return path; } static void selector_path_unref (SelectorPath *path) { path->ref_count--; if (path->ref_count > 0) return; while (path->elements) { g_slice_free (SelectorElement, path->elements->data); path->elements = g_slist_delete_link (path->elements, path->elements); } g_slice_free (SelectorPath, path); } static void selector_path_prepend_type (SelectorPath *path, const gchar *type_name) { SelectorElement *elem; GType type; elem = g_slice_new (SelectorElement); elem->combinator = COMBINATOR_DESCENDANT; type = g_type_from_name (type_name); if (type == G_TYPE_INVALID) { elem->elem_type = SELECTOR_TYPE_NAME; elem->name = g_quark_from_string (type_name); } else { elem->elem_type = SELECTOR_GTYPE; elem->type = type; } path->elements = g_slist_prepend (path->elements, elem); } static void selector_path_prepend_glob (SelectorPath *path) { SelectorElement *elem; elem = g_slice_new (SelectorElement); elem->elem_type = SELECTOR_GLOB; elem->combinator = COMBINATOR_DESCENDANT; path->elements = g_slist_prepend (path->elements, elem); } static void selector_path_prepend_region (SelectorPath *path, const gchar *name, GtkRegionFlags flags) { SelectorElement *elem; elem = g_slice_new (SelectorElement); elem->combinator = COMBINATOR_DESCENDANT; elem->elem_type = SELECTOR_REGION; elem->region.name = g_quark_from_string (name); elem->region.flags = flags; path->elements = g_slist_prepend (path->elements, elem); } static void selector_path_prepend_name (SelectorPath *path, const gchar *name) { SelectorElement *elem; elem = g_slice_new (SelectorElement); elem->combinator = COMBINATOR_DESCENDANT; elem->elem_type = SELECTOR_NAME; elem->name = g_quark_from_string (name); path->elements = g_slist_prepend (path->elements, elem); } static void selector_path_prepend_class (SelectorPath *path, const gchar *name) { SelectorElement *elem; elem = g_slice_new (SelectorElement); elem->combinator = COMBINATOR_DESCENDANT; elem->elem_type = SELECTOR_CLASS; elem->name = g_quark_from_string (name); path->elements = g_slist_prepend (path->elements, elem); } static void selector_path_prepend_combinator (SelectorPath *path, CombinatorType combinator) { SelectorElement *elem; g_assert (path->elements != NULL); /* It is actually stored in the last element */ elem = path->elements->data; elem->combinator = combinator; } static gint selector_path_depth (SelectorPath *path) { return g_slist_length (path->elements); } static SelectorStyleInfo * selector_style_info_new (SelectorPath *path) { SelectorStyleInfo *info; info = g_slice_new0 (SelectorStyleInfo); info->path = selector_path_ref (path); return info; } static void selector_style_info_free (SelectorStyleInfo *info) { if (info->style) g_hash_table_unref (info->style); if (info->path) selector_path_unref (info->path); } static void selector_style_info_set_style (SelectorStyleInfo *info, GHashTable *style) { if (info->style) g_hash_table_unref (info->style); if (style) info->style = g_hash_table_ref (style); else info->style = NULL; } static void gtk_css_provider_init (GtkCssProvider *css_provider) { GtkCssProviderPrivate *priv; GScanner *scanner; priv = css_provider->priv = G_TYPE_INSTANCE_GET_PRIVATE (css_provider, GTK_TYPE_CSS_PROVIDER, GtkCssProviderPrivate); priv->selectors_info = g_ptr_array_new_with_free_func ((GDestroyNotify) selector_style_info_free); scanner = g_scanner_new (NULL); g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "active", GUINT_TO_POINTER (GTK_STATE_ACTIVE)); g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "prelight", GUINT_TO_POINTER (GTK_STATE_PRELIGHT)); g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "hover", GUINT_TO_POINTER (GTK_STATE_PRELIGHT)); g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "selected", GUINT_TO_POINTER (GTK_STATE_SELECTED)); g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "insensitive", GUINT_TO_POINTER (GTK_STATE_INSENSITIVE)); g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "nth-child", GUINT_TO_POINTER (SYMBOL_NTH_CHILD)); g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "first-child", GUINT_TO_POINTER (SYMBOL_FIRST_CHILD)); g_scanner_scope_add_symbol (scanner, SCOPE_PSEUDO_CLASS, "last-child", GUINT_TO_POINTER (SYMBOL_LAST_CHILD)); g_scanner_scope_add_symbol (scanner, SCOPE_NTH_CHILD, "even", GUINT_TO_POINTER (SYMBOL_NTH_CHILD_EVEN)); g_scanner_scope_add_symbol (scanner, SCOPE_NTH_CHILD, "odd", GUINT_TO_POINTER (SYMBOL_NTH_CHILD_ODD)); g_scanner_scope_add_symbol (scanner, SCOPE_NTH_CHILD, "first", GUINT_TO_POINTER (SYMBOL_NTH_CHILD_FIRST)); g_scanner_scope_add_symbol (scanner, SCOPE_NTH_CHILD, "last", GUINT_TO_POINTER (SYMBOL_NTH_CHILD_LAST)); priv->scanner = scanner; css_provider_apply_scope (css_provider, SCOPE_SELECTOR); priv->symbolic_colors = g_hash_table_new_full (g_str_hash, g_str_equal, (GDestroyNotify) g_free, (GDestroyNotify) gtk_symbolic_color_unref); } typedef struct ComparePathData ComparePathData; struct ComparePathData { guint64 score; SelectorPath *path; GSList *iter; }; static gboolean compare_selector_element (GtkWidgetPath *path, guint index, SelectorElement *elem, guint8 *score) { *score = 0; if (elem->elem_type == SELECTOR_TYPE_NAME) { const gchar *type_name; GType resolved_type; /* Resolve the type name */ type_name = g_quark_to_string (elem->name); resolved_type = g_type_from_name (type_name); if (resolved_type == G_TYPE_INVALID) { /* Type couldn't be resolved, so the selector * clearly doesn't affect the given widget path */ return FALSE; } elem->elem_type = SELECTOR_GTYPE; elem->type = resolved_type; } if (elem->elem_type == SELECTOR_GTYPE) { GType type; type = gtk_widget_path_iter_get_widget_type (path, index); if (!g_type_is_a (type, elem->type)) return FALSE; if (type == elem->type) *score |= 0xF; else { GType parent = type; *score = 0xE; while ((parent = g_type_parent (parent)) != G_TYPE_INVALID) { if (parent == elem->type) break; *score -= 1; if (*score == 1) { g_warning ("Hierarchy is higher than expected."); break; } } } return TRUE; } else if (elem->elem_type == SELECTOR_REGION) { GtkRegionFlags flags; if (!gtk_widget_path_iter_has_qregion (path, index, elem->region.name, &flags)) return FALSE; if (elem->region.flags != 0 && (flags & elem->region.flags) == 0) return FALSE; *score = 0xF; return TRUE; } else if (elem->elem_type == SELECTOR_GLOB) { /* Treat as lowest matching type */ *score = 1; return TRUE; } else if (elem->elem_type == SELECTOR_NAME) { if (!gtk_widget_path_iter_has_qname (path, index, elem->name)) return FALSE; *score = 0xF; return TRUE; } else if (elem->elem_type == SELECTOR_CLASS) { if (!gtk_widget_path_iter_has_qclass (path, index, elem->name)) return FALSE; *score = 0xF; return TRUE; } return FALSE; } static guint64 compare_selector (GtkWidgetPath *path, SelectorPath *selector) { GSList *elements = selector->elements; gboolean match = TRUE; guint64 score = 0; guint len; guint i = 0; len = gtk_widget_path_length (path); while (elements && match && i < len) { SelectorElement *elem; guint8 elem_score; elem = elements->data; match = compare_selector_element (path, i, elem, &elem_score); /* Only move on to the next index if there is no match * with the current element (whether to continue or not * handled right after in the combinator check), or a * GType or glob has just been matched. * * Region and widget names do not trigger this because * the next element in the selector path could also be * related to the same index. */ if (!match || (elem->elem_type == SELECTOR_GTYPE || elem->elem_type == SELECTOR_GLOB)) i++; if (!match && elem->elem_type != SELECTOR_TYPE_NAME && elem->combinator == COMBINATOR_DESCENDANT) { /* With descendant combinators there may * be intermediate chidren in the hierarchy */ match = TRUE; } else if (match) elements = elements->next; if (match) { /* Only 4 bits are actually used */ score <<= 4; score |= elem_score; } } /* If there are pending selector * elements to compare, it's not * a match. */ if (elements) match = FALSE; if (!match) score = 0; return score; } typedef struct StylePriorityInfo StylePriorityInfo; struct StylePriorityInfo { guint64 score; GHashTable *style; GtkStateFlags state; }; static GArray * css_provider_get_selectors (GtkCssProvider *css_provider, GtkWidgetPath *path) { GtkCssProviderPrivate *priv; GArray *priority_info; guint i, j; priv = css_provider->priv; priority_info = g_array_new (FALSE, FALSE, sizeof (StylePriorityInfo)); for (i = 0; i < priv->selectors_info->len; i++) { SelectorStyleInfo *info; StylePriorityInfo new; gboolean added = FALSE; guint64 score; info = g_ptr_array_index (priv->selectors_info, i); score = compare_selector (path, info->path); if (score <= 0) continue; new.score = score; new.style = info->style; new.state = info->path->state; for (j = 0; j < priority_info->len; j++) { StylePriorityInfo *cur; cur = &g_array_index (priority_info, StylePriorityInfo, j); if (cur->score > new.score) { g_array_insert_val (priority_info, j, new); added = TRUE; break; } } if (!added) g_array_append_val (priority_info, new); } return priority_info; } static void css_provider_dump_symbolic_colors (GtkCssProvider *css_provider, GtkStyleSet *set) { GtkCssProviderPrivate *priv; GHashTableIter iter; gpointer key, value; priv = css_provider->priv; g_hash_table_iter_init (&iter, priv->symbolic_colors); while (g_hash_table_iter_next (&iter, &key, &value)) { const gchar *name; GtkSymbolicColor *color; name = key; color = value; gtk_style_set_map_color (set, name, color); } } static GtkStyleSet * gtk_css_provider_get_style (GtkStyleProvider *provider, GtkWidgetPath *path) { GtkCssProvider *css_provider; GtkCssProviderPrivate *priv; GtkStyleSet *set; GArray *priority_info; guint i; css_provider = GTK_CSS_PROVIDER (provider); priv = css_provider->priv; set = gtk_style_set_new (); css_provider_dump_symbolic_colors (css_provider, set); priority_info = css_provider_get_selectors (css_provider, path); for (i = 0; i < priority_info->len; i++) { StylePriorityInfo *info; GHashTableIter iter; gpointer key, value; info = &g_array_index (priority_info, StylePriorityInfo, i); g_hash_table_iter_init (&iter, info->style); while (g_hash_table_iter_next (&iter, &key, &value)) { gchar *prop = key; /* Properties starting with '-' may be both widget style properties * or custom properties from the theming engine, so check whether * the type is registered or not. */ if (prop[0] == '-' && !gtk_style_set_lookup_property (prop, NULL, NULL)) continue; gtk_style_set_set_property (set, key, info->state, value); } } g_array_free (priority_info, TRUE); return set; } static gboolean gtk_css_provider_get_style_property (GtkStyleProvider *provider, GtkWidgetPath *path, const gchar *property_name, GValue *value) { GArray *priority_info; gboolean found = FALSE; gchar *prop_name; GType path_type; gint i; path_type = gtk_widget_path_get_widget_type (path); prop_name = g_strdup_printf ("-%s-%s", g_type_name (path_type), property_name); priority_info = css_provider_get_selectors (GTK_CSS_PROVIDER (provider), path); for (i = priority_info->len - 1; i >= 0; i--) { StylePriorityInfo *info; GValue *val; info = &g_array_index (priority_info, StylePriorityInfo, i); val = g_hash_table_lookup (info->style, prop_name); if (val) { const gchar *val_str; val_str = g_value_get_string (val); found = TRUE; css_provider_parse_value (val_str, value); break; } } g_array_free (priority_info, TRUE); g_free (prop_name); return found; } static void gtk_css_style_provider_iface_init (GtkStyleProviderIface *iface) { iface->get_style = gtk_css_provider_get_style; iface->get_style_property = gtk_css_provider_get_style_property; } static void gtk_css_provider_finalize (GObject *object) { GtkCssProvider *css_provider; GtkCssProviderPrivate *priv; css_provider = GTK_CSS_PROVIDER (object); priv = css_provider->priv; g_scanner_destroy (priv->scanner); g_free (priv->filename); g_ptr_array_free (priv->selectors_info, TRUE); g_slist_foreach (priv->cur_selectors, (GFunc) selector_path_unref, NULL); g_slist_free (priv->cur_selectors); g_hash_table_unref (priv->cur_properties); g_hash_table_destroy (priv->symbolic_colors); G_OBJECT_CLASS (gtk_css_provider_parent_class)->finalize (object); } GtkCssProvider * gtk_css_provider_new (void) { return g_object_new (GTK_TYPE_CSS_PROVIDER, NULL); } static void property_value_free (GValue *value) { if (G_IS_VALUE (value)) g_value_unset (value); g_slice_free (GValue, value); } static void css_provider_apply_scope (GtkCssProvider *css_provider, ParserScope scope) { GtkCssProviderPrivate *priv; priv = css_provider->priv; g_scanner_set_scope (priv->scanner, scope); if (scope == SCOPE_VALUE) { priv->scanner->config->cset_identifier_first = G_CSET_a_2_z "@#-_0123456789" G_CSET_A_2_Z; priv->scanner->config->cset_identifier_nth = G_CSET_a_2_z "@#-_ 0123456789(),." G_CSET_A_2_Z; priv->scanner->config->scan_identifier_1char = TRUE; } else if (scope == SCOPE_SELECTOR) { priv->scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z "*@"; priv->scanner->config->cset_identifier_nth = G_CSET_a_2_z "-_#" G_CSET_A_2_Z; priv->scanner->config->scan_identifier_1char = TRUE; } else if (scope == SCOPE_PSEUDO_CLASS || scope == SCOPE_NTH_CHILD || scope == SCOPE_DECLARATION) { priv->scanner->config->cset_identifier_first = G_CSET_a_2_z "-" G_CSET_A_2_Z; priv->scanner->config->cset_identifier_nth = G_CSET_a_2_z "-" G_CSET_A_2_Z; priv->scanner->config->scan_identifier_1char = FALSE; } else g_assert_not_reached (); priv->scanner->config->scan_float = FALSE; priv->scanner->config->cpair_comment_single = NULL; } static void css_provider_push_scope (GtkCssProvider *css_provider, ParserScope scope) { GtkCssProviderPrivate *priv; priv = css_provider->priv; priv->state = g_slist_prepend (priv->state, GUINT_TO_POINTER (scope)); css_provider_apply_scope (css_provider, scope); } static ParserScope css_provider_pop_scope (GtkCssProvider *css_provider) { GtkCssProviderPrivate *priv; ParserScope scope = SCOPE_SELECTOR; priv = css_provider->priv; if (!priv->state) { g_warning ("Push/pop calls to parser scope aren't paired"); css_provider_apply_scope (css_provider, SCOPE_SELECTOR); return SCOPE_SELECTOR; } priv->state = g_slist_delete_link (priv->state, priv->state); /* Fetch new scope */ if (priv->state) scope = GPOINTER_TO_INT (priv->state->data); css_provider_apply_scope (css_provider, scope); return scope; } static void css_provider_reset_parser (GtkCssProvider *css_provider) { GtkCssProviderPrivate *priv; priv = css_provider->priv; g_slist_free (priv->state); priv->state = NULL; css_provider_apply_scope (css_provider, SCOPE_SELECTOR); g_slist_foreach (priv->cur_selectors, (GFunc) selector_path_unref, NULL); g_slist_free (priv->cur_selectors); priv->cur_selectors = NULL; if (priv->cur_properties) g_hash_table_unref (priv->cur_properties); priv->cur_properties = g_hash_table_new_full (g_str_hash, g_str_equal, (GDestroyNotify) g_free, (GDestroyNotify) property_value_free); } static void css_provider_commit (GtkCssProvider *css_provider) { GtkCssProviderPrivate *priv; GSList *l; priv = css_provider->priv; l = priv->cur_selectors; while (l) { SelectorPath *path = l->data; SelectorStyleInfo *info; info = selector_style_info_new (path); selector_style_info_set_style (info, priv->cur_properties); g_ptr_array_add (priv->selectors_info, info); l = l->next; } } static GTokenType parse_nth_child (GtkCssProvider *css_provider, GScanner *scanner, GtkRegionFlags *flags) { ParserSymbol symbol; g_scanner_get_next_token (scanner); if (scanner->token != G_TOKEN_SYMBOL) return G_TOKEN_SYMBOL; symbol = GPOINTER_TO_INT (scanner->value.v_symbol); if (symbol == SYMBOL_NTH_CHILD) { g_scanner_get_next_token (scanner); if (scanner->token != G_TOKEN_LEFT_PAREN) return G_TOKEN_LEFT_PAREN; css_provider_push_scope (css_provider, SCOPE_NTH_CHILD); g_scanner_get_next_token (scanner); if (scanner->token != G_TOKEN_SYMBOL) return G_TOKEN_SYMBOL; symbol = GPOINTER_TO_INT (scanner->value.v_symbol); switch (symbol) { case SYMBOL_NTH_CHILD_EVEN: *flags = GTK_REGION_EVEN; break; case SYMBOL_NTH_CHILD_ODD: *flags = GTK_REGION_ODD; break; case SYMBOL_NTH_CHILD_FIRST: *flags = GTK_REGION_FIRST; break; case SYMBOL_NTH_CHILD_LAST: *flags = GTK_REGION_LAST; break; default: break; } g_scanner_get_next_token (scanner); if (scanner->token != G_TOKEN_RIGHT_PAREN) return G_TOKEN_RIGHT_PAREN; css_provider_pop_scope (css_provider); } else if (symbol == SYMBOL_FIRST_CHILD) *flags = GTK_REGION_FIRST; else if (symbol == SYMBOL_LAST_CHILD) *flags = GTK_REGION_LAST; else { *flags = 0; return G_TOKEN_SYMBOL; } return G_TOKEN_NONE; } static GTokenType parse_pseudo_class (GtkCssProvider *css_provider, GScanner *scanner, SelectorPath *selector) { GtkStateType state; g_scanner_get_next_token (scanner); if (scanner->token != G_TOKEN_SYMBOL) return G_TOKEN_SYMBOL; state = GPOINTER_TO_INT (scanner->value.v_symbol); switch (state) { case GTK_STATE_ACTIVE: selector->state |= GTK_STATE_FLAG_ACTIVE; break; case GTK_STATE_PRELIGHT: selector->state |= GTK_STATE_FLAG_PRELIGHT; break; case GTK_STATE_SELECTED: selector->state |= GTK_STATE_FLAG_SELECTED; break; case GTK_STATE_INSENSITIVE: selector->state |= GTK_STATE_FLAG_INSENSITIVE; break; case GTK_STATE_INCONSISTENT: selector->state |= GTK_STATE_FLAG_INCONSISTENT; break; case GTK_STATE_FOCUSED: selector->state |= GTK_STATE_FLAG_FOCUSED; break; default: return G_TOKEN_SYMBOL; } return G_TOKEN_NONE; } static GTokenType parse_selector (GtkCssProvider *css_provider, GScanner *scanner, SelectorPath **selector_out) { SelectorPath *path; path = selector_path_new (); *selector_out = path; if (scanner->token != ':' && scanner->token != '#' && scanner->token != '.' && scanner->token != G_TOKEN_IDENTIFIER) return G_TOKEN_IDENTIFIER; while (scanner->token == '#' || scanner->token == '.' || scanner->token == G_TOKEN_IDENTIFIER) { if (scanner->token == '#' || scanner->token == '.') { gboolean is_class; is_class = (scanner->token == '.'); g_scanner_get_next_token (scanner); if (scanner->token != G_TOKEN_IDENTIFIER) return G_TOKEN_IDENTIFIER; selector_path_prepend_glob (path); selector_path_prepend_combinator (path, COMBINATOR_CHILD); if (is_class) selector_path_prepend_class (path, scanner->value.v_identifier); else selector_path_prepend_name (path, scanner->value.v_identifier); } else if (g_ascii_isupper (scanner->value.v_identifier[0])) { gchar *pos; if ((pos = strchr (scanner->value.v_identifier, '#')) != NULL || (pos = strchr (scanner->value.v_identifier, '.')) != NULL) { gchar *type_name, *name; gboolean is_class; is_class = (*pos == '.'); /* Widget type and name/class put together */ name = pos + 1; *pos = '\0'; type_name = scanner->value.v_identifier; selector_path_prepend_type (path, type_name); /* This is only so there is a direct relationship * between widget type and its name. */ selector_path_prepend_combinator (path, COMBINATOR_CHILD); if (is_class) selector_path_prepend_class (path, name); else selector_path_prepend_name (path, name); } else selector_path_prepend_type (path, scanner->value.v_identifier); } else if (g_ascii_islower (scanner->value.v_identifier[0])) { GtkRegionFlags flags = 0; gchar *region_name; region_name = g_strdup (scanner->value.v_identifier); if (g_scanner_peek_next_token (scanner) == ':') { ParserSymbol symbol; g_scanner_get_next_token (scanner); css_provider_push_scope (css_provider, SCOPE_PSEUDO_CLASS); /* Check for the next token being nth-child, parse in that * case, and fallback into common state parsing if not. */ if (g_scanner_peek_next_token (scanner) != G_TOKEN_SYMBOL) return G_TOKEN_SYMBOL; symbol = GPOINTER_TO_INT (scanner->next_value.v_symbol); if (symbol == SYMBOL_FIRST_CHILD || symbol == SYMBOL_LAST_CHILD || symbol == SYMBOL_NTH_CHILD) { GTokenType token; if ((token = parse_nth_child (css_provider, scanner, &flags)) != G_TOKEN_NONE) return token; css_provider_pop_scope (css_provider); } else { css_provider_pop_scope (css_provider); selector_path_prepend_region (path, region_name, 0); g_free (region_name); break; } } selector_path_prepend_region (path, region_name, flags); g_free (region_name); } else if (scanner->value.v_identifier[0] == '*') selector_path_prepend_glob (path); else return G_TOKEN_IDENTIFIER; g_scanner_get_next_token (scanner); if (scanner->token == '>') { selector_path_prepend_combinator (path, COMBINATOR_CHILD); g_scanner_get_next_token (scanner); } } if (scanner->token == ':') { /* Add glob selector if path is empty */ if (selector_path_depth (path) == 0) selector_path_prepend_glob (path); css_provider_push_scope (css_provider, SCOPE_PSEUDO_CLASS); while (scanner->token == ':') { GTokenType token; if ((token = parse_pseudo_class (css_provider, scanner, path)) != G_TOKEN_NONE) return token; g_scanner_get_next_token (scanner); } css_provider_pop_scope (css_provider); } return G_TOKEN_NONE; } #define SKIP_SPACES(s) while (s[0] == ' ') s++; static GtkSymbolicColor * symbolic_color_parse_str (const gchar *string, gchar **end_ptr) { GtkSymbolicColor *symbolic_color = NULL; gchar *str; str = (gchar *) string; if (str[0] == '#') { GdkColor color; gchar *color_str; const gchar *end; end = str + 1; while (g_ascii_isxdigit (*end)) end++; color_str = g_strndup (str, end - str); *end_ptr = (gchar *) end; if (!gdk_color_parse (color_str, &color)) { g_free (color_str); return NULL; } symbolic_color = gtk_symbolic_color_new_literal (&color); g_free (color_str); } else if (str[0] == '@') { const gchar *end; gchar *name; str++; end = str; while (*end == '-' || *end == '_' || g_ascii_isalpha (*end)) end++; name = g_strndup (str, end - str); symbolic_color = gtk_symbolic_color_new_name (name); g_free (name); *end_ptr = (gchar *) end; } else if (g_str_has_prefix (str, "shade")) { GtkSymbolicColor *param_color; gdouble factor; str += strlen ("shade"); SKIP_SPACES (str); if (*str != '(') { *end_ptr = (gchar *) str; return NULL; } str++; SKIP_SPACES (str); param_color = symbolic_color_parse_str (str, end_ptr); if (!param_color) return NULL; str = *end_ptr; SKIP_SPACES (str); if (str[0] != ',') { gtk_symbolic_color_unref (param_color); *end_ptr = (gchar *) str; return NULL; } str++; SKIP_SPACES (str); factor = g_ascii_strtod (str, end_ptr); str = *end_ptr; SKIP_SPACES (str); *end_ptr = (gchar *) str; if (str[0] != ')') { gtk_symbolic_color_unref (param_color); return NULL; } symbolic_color = gtk_symbolic_color_new_shade (param_color, factor); (*end_ptr)++; } else if (g_str_has_prefix (str, "mix")) { GtkSymbolicColor *color1, *color2; gdouble factor; str += strlen ("mix"); SKIP_SPACES (str); if (*str != '(') { *end_ptr = (gchar *) str; return NULL; } str++; SKIP_SPACES (str); color1 = symbolic_color_parse_str (str, end_ptr); if (!color1) return NULL; str = *end_ptr; SKIP_SPACES (str); if (str[0] != ',') { gtk_symbolic_color_unref (color1); *end_ptr = (gchar *) str; return NULL; } str++; SKIP_SPACES (str); color2 = symbolic_color_parse_str (str, end_ptr); if (!color2 || *end_ptr[0] != ',') { gtk_symbolic_color_unref (color1); return NULL; } str = *end_ptr; SKIP_SPACES (str); if (str[0] != ',') { gtk_symbolic_color_unref (color1); gtk_symbolic_color_unref (color2); *end_ptr = (gchar *) str; return NULL; } str++; SKIP_SPACES (str); factor = g_ascii_strtod (str, end_ptr); str = *end_ptr; SKIP_SPACES (str); *end_ptr = (gchar *) str; if (str[0] != ')') { gtk_symbolic_color_unref (color1); gtk_symbolic_color_unref (color2); return NULL; } symbolic_color = gtk_symbolic_color_new_mix (color1, color2, factor); (*end_ptr)++; } return symbolic_color; } #undef SKIP_SPACES static GtkSymbolicColor * symbolic_color_parse (const gchar *str) { GtkSymbolicColor *color; gchar *end; color = symbolic_color_parse_str (str, &end); if (*end != '\0') { g_warning ("Error parsing symbolic color \"%s\", stopped at char %ld : '%c'", str, end - str, *end); if (color) { gtk_symbolic_color_unref (color); color = NULL; } } return color; } static gboolean css_provider_parse_value (const gchar *value_str, GValue *value) { GType type; gboolean parsed = TRUE; type = G_VALUE_TYPE (value); if (type == GDK_TYPE_COLOR) { GdkColor color; if (gdk_color_parse (value_str, &color) == TRUE) g_value_set_boxed (value, &color); else { GtkSymbolicColor *symbolic_color; symbolic_color = symbolic_color_parse (value_str); if (!symbolic_color) return FALSE; g_value_unset (value); g_value_init (value, GTK_TYPE_SYMBOLIC_COLOR); g_value_take_boxed (value, symbolic_color); } } else if (type == PANGO_TYPE_FONT_DESCRIPTION) { PangoFontDescription *font_desc; font_desc = pango_font_description_from_string (value_str); g_value_take_boxed (value, font_desc); } else if (type == G_TYPE_BOOLEAN) { if (value_str[0] == '1' || g_ascii_strcasecmp (value_str, "true") == 0) g_value_set_boolean (value, TRUE); else g_value_set_boolean (value, FALSE); } else if (type == G_TYPE_INT) g_value_set_int (value, atoi (value_str)); else if (type == G_TYPE_DOUBLE) g_value_set_double (value, g_ascii_strtod (value_str, NULL)); else if (type == GTK_TYPE_THEMING_ENGINE) { GtkThemingEngine *engine; engine = gtk_theming_engine_load (value_str); g_value_set_object (value, engine); } else if (type == GTK_TYPE_ANIMATION_DESCRIPTION) { GtkAnimationDescription *desc; desc = gtk_animation_description_from_string (value_str); if (desc) g_value_take_boxed (value, desc); else parsed = FALSE; } else { g_warning ("Cannot parse string '%s' for type %s", value_str, g_type_name (type)); parsed = FALSE; } return parsed; } static GTokenType parse_rule (GtkCssProvider *css_provider, GScanner *scanner) { GtkCssProviderPrivate *priv; GTokenType expected_token; SelectorPath *selector; priv = css_provider->priv; css_provider_push_scope (css_provider, SCOPE_SELECTOR); if (scanner->token == G_TOKEN_IDENTIFIER && scanner->value.v_identifier[0] == '@') { GtkSymbolicColor *color; gchar *color_name; /* Rule is a color mapping */ color_name = g_strdup (&scanner->value.v_identifier[1]); g_scanner_get_next_token (scanner); if (scanner->token != ':') return ':'; css_provider_push_scope (css_provider, SCOPE_VALUE); g_scanner_get_next_token (scanner); if (scanner->token != G_TOKEN_IDENTIFIER) return G_TOKEN_IDENTIFIER; color = symbolic_color_parse (scanner->value.v_identifier); if (!color) return G_TOKEN_IDENTIFIER; g_hash_table_insert (priv->symbolic_colors, color_name, color); css_provider_pop_scope (css_provider); g_scanner_get_next_token (scanner); if (scanner->token != ';') return ';'; return G_TOKEN_NONE; } expected_token = parse_selector (css_provider, scanner, &selector); if (expected_token != G_TOKEN_NONE) { selector_path_unref (selector); return expected_token; } priv->cur_selectors = g_slist_prepend (priv->cur_selectors, selector); while (scanner->token == ',') { g_scanner_get_next_token (scanner); expected_token = parse_selector (css_provider, scanner, &selector); if (expected_token != G_TOKEN_NONE) { selector_path_unref (selector); return expected_token; } priv->cur_selectors = g_slist_prepend (priv->cur_selectors, selector); } css_provider_pop_scope (css_provider); if (scanner->token != G_TOKEN_LEFT_CURLY) return G_TOKEN_LEFT_CURLY; /* Declarations parsing */ css_provider_push_scope (css_provider, SCOPE_DECLARATION); g_scanner_get_next_token (scanner); while (scanner->token == G_TOKEN_IDENTIFIER) { const gchar *value_str = NULL; GtkStylePropertyParser parse_func = NULL; GType prop_type; GError *error = NULL; gchar *prop; prop = g_strdup (scanner->value.v_identifier); g_scanner_get_next_token (scanner); if (scanner->token != ':') { g_free (prop); return ':'; } css_provider_push_scope (css_provider, SCOPE_VALUE); g_scanner_get_next_token (scanner); if (scanner->token != G_TOKEN_IDENTIFIER) { g_free (prop); return G_TOKEN_IDENTIFIER; } value_str = g_strstrip (scanner->value.v_identifier); if (gtk_style_set_lookup_property (prop, &prop_type, &parse_func)) { GValue *val; val = g_slice_new0 (GValue); g_value_init (val, prop_type); if (prop_type == G_TYPE_STRING) { g_value_set_string (val, value_str); g_hash_table_insert (priv->cur_properties, prop, val); } else if ((parse_func && (parse_func) (value_str, val, &error)) || (!parse_func && css_provider_parse_value (value_str, val))) g_hash_table_insert (priv->cur_properties, prop, val); else { if (error) { g_warning ("Error parsing property value: %s\n", error->message); g_error_free (error); } g_value_unset (val); g_slice_free (GValue, val); g_free (prop); return G_TOKEN_IDENTIFIER; } } else if (prop[0] == '-' && g_ascii_isupper (prop[1])) { GValue *val; val = g_slice_new0 (GValue); g_value_init (val, G_TYPE_STRING); g_value_set_string (val, value_str); g_hash_table_insert (priv->cur_properties, prop, val); } else g_free (prop); css_provider_pop_scope (css_provider); g_scanner_get_next_token (scanner); if (scanner->token != ';') return ';'; g_scanner_get_next_token (scanner); } if (scanner->token != G_TOKEN_RIGHT_CURLY) return G_TOKEN_RIGHT_CURLY; css_provider_pop_scope (css_provider); return G_TOKEN_NONE; } static gboolean parse_stylesheet (GtkCssProvider *css_provider) { GtkCssProviderPrivate *priv; priv = css_provider->priv; g_scanner_get_next_token (priv->scanner); while (!g_scanner_eof (priv->scanner)) { GTokenType expected_token; css_provider_reset_parser (css_provider); expected_token = parse_rule (css_provider, priv->scanner); if (expected_token != G_TOKEN_NONE) { g_scanner_unexp_token (priv->scanner, expected_token, NULL, NULL, NULL, "Error parsing style resource", FALSE); while (!g_scanner_eof (priv->scanner) && priv->scanner->token != G_TOKEN_RIGHT_CURLY) g_scanner_get_next_token (priv->scanner); } else css_provider_commit (css_provider); g_scanner_get_next_token (priv->scanner); } return TRUE; } gboolean gtk_css_provider_load_from_data (GtkCssProvider *css_provider, const gchar *data, gssize length, GError *error) { GtkCssProviderPrivate *priv; g_return_val_if_fail (GTK_IS_CSS_PROVIDER (css_provider), FALSE); g_return_val_if_fail (data != NULL, FALSE); priv = css_provider->priv; if (length < 0) length = strlen (data); if (priv->selectors_info->len > 0) g_ptr_array_remove_range (priv->selectors_info, 0, priv->selectors_info->len); css_provider_reset_parser (css_provider); priv->scanner->input_name = "-"; g_scanner_input_text (priv->scanner, data, (guint) length); parse_stylesheet (css_provider); return TRUE; } gboolean gtk_css_provider_load_from_file (GtkCssProvider *css_provider, GFile *file, GError **error) { GtkCssProviderPrivate *priv; GError *internal_error = NULL; gchar *data; gsize length; g_return_val_if_fail (GTK_IS_CSS_PROVIDER (css_provider), FALSE); g_return_val_if_fail (G_IS_FILE (file), FALSE); priv = css_provider->priv; if (!g_file_load_contents (file, NULL, &data, &length, NULL, &internal_error)) { g_propagate_error (error, internal_error); return FALSE; } if (priv->selectors_info->len > 0) g_ptr_array_remove_range (priv->selectors_info, 0, priv->selectors_info->len); g_free (priv->filename); priv->filename = g_file_get_path (file); css_provider_reset_parser (css_provider); priv->scanner->input_name = priv->filename; g_scanner_input_text (priv->scanner, data, (guint) length); parse_stylesheet (css_provider); g_free (data); return TRUE; } GtkCssProvider * gtk_css_provider_get_default (void) { static GtkCssProvider *provider; if (G_UNLIKELY (!provider)) { const gchar *str = "@fg_color: #000; \n" "@bg_color: #dcdad5; \n" "@text_color: #000; \n" "@base_color: #fff; \n" "@selected_bg_color: #4b6983; \n" "@selected_fg_color: #fff; \n" "@tooltip_bg_color: #eee1b3; \n" "@tooltip_fg_color: #000; \n" "\n" "*,\n" "GtkTreeView > GtkButton {\n" " background-color: @bg_color;\n" " foreground-color: @fg_color;\n" " text-color: @text_color; \n" " base-color: @base_color; \n" "}\n" "\n" "*:prelight {\n" " background-color: #eeebe7;\n" " foreground-color: #000000;\n" " text-color: #eeebe7; \n" " base-color: #ffffff; \n" "}\n" "\n" "*:selected {\n" " background-color: #4b6983;\n" " foreground-color: #ffffff;\n" " base-color: #4b6983;\n" " text-color: #ffffff;\n" "}\n" "\n" "*:insensitive {\n" " background-color: #dcdad5;\n" " foreground-color: #757575;\n" "}\n" "\n" "GtkTreeView, GtkIconView {\n" " background-color: #ffffff; \n" "}\n" "\n" "GtkTreeView > row:nth-child(odd) { \n" " background-color: shade(#ffffff, 0.93); \n" "}\n" "\n" ".tooltip {\n" " background-color: @tooltip_bg_color; \n" " foreground-color: @tooltip_fg_color; \n" "}\n" "\n" "GtkToggleButton:prelight {\n" " text-color: #000; \n" "}\n" "\n" ".button:active {\n" " background-color: #c4c2bd;\n" " foreground-color: #000000;\n" " text-color: #c4c2bd; \n" " base-color: #9c9a94; \n" "}\n" "\n"; provider = gtk_css_provider_new (); gtk_css_provider_load_from_data (provider, str, -1, NULL); } return provider; } #define __GTK_CSS_PROVIDER_C__ #include "gtkaliasdef.c"