forked from AuroraMiddleware/gtk
1931 lines
55 KiB
C
1931 lines
55 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2011 Benjamin Otte <otte@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkcssselectorprivate.h"
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#include <stdlib.h>
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#include <string.h>
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#include "gtkcssprovider.h"
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#include "gtkstylecontextprivate.h"
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#if defined(_MSC_VER) && _MSC_VER >= 1500
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# include <intrin.h>
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#endif
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typedef struct _GtkCssSelectorClass GtkCssSelectorClass;
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typedef gboolean (* GtkCssSelectorForeachFunc) (const GtkCssSelector *selector,
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const GtkCssMatcher *matcher,
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gpointer data);
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struct _GtkCssSelectorClass {
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const char *name;
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void (* print) (const GtkCssSelector *selector,
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GString *string);
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/* NULL or an iterator that calls func with each submatcher of @matcher.
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* Potentially no submatcher exists.
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* If any @invocation of @func returns %TRUE, the function will immediately
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* return %TRUE itself. If @func never returns %TRUE (or isn't called at all),
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* %FALSE will be returned.
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*/
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gboolean (* foreach_matcher) (const GtkCssSelector *selector,
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const GtkCssMatcher *matcher,
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GtkCssSelectorForeachFunc func,
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gpointer data);
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gboolean (* match_one) (const GtkCssSelector *selector,
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const GtkCssMatcher *matcher);
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GtkCssChange (* get_change) (const GtkCssSelector *selector,
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GtkCssChange previous_change);
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void (* add_specificity) (const GtkCssSelector *selector,
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guint *ids,
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guint *classes,
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guint *elements);
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guint (* hash_one) (const GtkCssSelector *selector);
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int (* compare_one) (const GtkCssSelector *a,
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const GtkCssSelector *b);
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guint is_simple :1;
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};
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typedef enum {
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POSITION_FORWARD,
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POSITION_BACKWARD,
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POSITION_ONLY,
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POSITION_SORTED
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} PositionType;
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#define POSITION_TYPE_BITS 4
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#define POSITION_NUMBER_BITS ((sizeof (gpointer) * 8 - POSITION_TYPE_BITS) / 2)
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union _GtkCssSelector
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{
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const GtkCssSelectorClass *class; /* type of check this selector does */
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struct {
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const GtkCssSelectorClass *class;
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const char *name; /* interned */
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} id;
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struct {
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const GtkCssSelectorClass *class;
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const char *name; /* interned */
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GtkRegionFlags flags;
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} region;
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struct {
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const GtkCssSelectorClass *class;
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GQuark style_class;
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} style_class;
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struct {
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const GtkCssSelectorClass *class;
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const char *name; /* interned */
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} name;
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struct {
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const GtkCssSelectorClass *class;
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GtkStateFlags state;
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} state;
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struct {
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const GtkCssSelectorClass *class;
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PositionType type :POSITION_TYPE_BITS;
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gssize a :POSITION_NUMBER_BITS;
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gssize b :POSITION_NUMBER_BITS;
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} position;
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};
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#define GTK_CSS_SELECTOR_TREE_EMPTY_OFFSET G_MAXINT32
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struct _GtkCssSelectorTree
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{
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GtkCssSelector selector;
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gint32 parent_offset;
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gint32 previous_offset;
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gint32 sibling_offset;
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gint32 matches_offset; /* pointers that we return as matches if selector matches */
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};
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static gboolean
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gtk_css_selector_equal (const GtkCssSelector *a,
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const GtkCssSelector *b)
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{
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return
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a->class == b->class &&
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a->class->compare_one (a, b) == 0;
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}
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static guint
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gtk_css_selector_hash_one (const GtkCssSelector *selector)
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{
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return GPOINTER_TO_UINT (selector->class) ^ selector->class->hash_one (selector);
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}
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static gpointer *
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gtk_css_selector_tree_get_matches (const GtkCssSelectorTree *tree)
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{
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if (tree->matches_offset == GTK_CSS_SELECTOR_TREE_EMPTY_OFFSET)
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return NULL;
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return (gpointer *) ((guint8 *)tree + tree->matches_offset);
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}
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static void
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g_ptr_array_insert_sorted (GPtrArray *array,
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gpointer data)
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{
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gint i;
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for (i = 0; i < array->len; i++)
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{
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if (data == array->pdata[i])
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return;
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if (data < array->pdata[i])
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break;
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}
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g_ptr_array_insert (array, i, data);
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}
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static void
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gtk_css_selector_tree_found_match (const GtkCssSelectorTree *tree,
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GPtrArray **array)
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{
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int i;
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gpointer *matches;
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matches = gtk_css_selector_tree_get_matches (tree);
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if (matches)
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{
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if (!*array)
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*array = g_ptr_array_sized_new (16);
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for (i = 0; matches[i] != NULL; i++)
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g_ptr_array_insert_sorted (*array, matches[i]);
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}
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}
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static gboolean
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gtk_css_selector_match (const GtkCssSelector *selector,
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const GtkCssMatcher *matcher)
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{
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return selector->class->match_one (selector, matcher);
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}
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static gboolean
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gtk_css_selector_foreach (const GtkCssSelector *selector,
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const GtkCssMatcher *matcher,
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GtkCssSelectorForeachFunc func,
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gpointer data)
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{
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return selector->class->foreach_matcher (selector, matcher, func, data);
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}
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static int
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gtk_css_selector_compare_one (const GtkCssSelector *a, const GtkCssSelector *b)
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{
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if (a->class != b->class)
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return strcmp (a->class->name, b->class->name);
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else
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return a->class->compare_one (a, b);
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}
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static const GtkCssSelector *
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gtk_css_selector_previous (const GtkCssSelector *selector)
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{
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selector = selector + 1;
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return selector->class ? selector : NULL;
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}
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static const GtkCssSelectorTree *
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gtk_css_selector_tree_at_offset (const GtkCssSelectorTree *tree,
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gint32 offset)
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{
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if (offset == GTK_CSS_SELECTOR_TREE_EMPTY_OFFSET)
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return NULL;
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return (GtkCssSelectorTree *) ((guint8 *)tree + offset);
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}
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static const GtkCssSelectorTree *
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gtk_css_selector_tree_get_parent (const GtkCssSelectorTree *tree)
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{
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return gtk_css_selector_tree_at_offset (tree, tree->parent_offset);
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}
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static const GtkCssSelectorTree *
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gtk_css_selector_tree_get_previous (const GtkCssSelectorTree *tree)
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{
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return gtk_css_selector_tree_at_offset (tree, tree->previous_offset);
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}
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static const GtkCssSelectorTree *
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gtk_css_selector_tree_get_sibling (const GtkCssSelectorTree *tree)
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{
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return gtk_css_selector_tree_at_offset (tree, tree->sibling_offset);
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}
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/* DEFAULTS */
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static void
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gtk_css_selector_default_add_specificity (const GtkCssSelector *selector,
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guint *ids,
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guint *classes,
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guint *elements)
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{
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/* no specificity changes */
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}
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static gboolean
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gtk_css_selector_default_foreach_matcher (const GtkCssSelector *selector,
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const GtkCssMatcher *matcher,
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GtkCssSelectorForeachFunc func,
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gpointer data)
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{
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return func (selector, matcher, data);
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}
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static gboolean
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gtk_css_selector_default_match_one (const GtkCssSelector *selector,
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const GtkCssMatcher *matcher)
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{
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return TRUE;
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}
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static guint
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gtk_css_selector_default_hash_one (const GtkCssSelector *selector)
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{
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return 0;
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}
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static int
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gtk_css_selector_default_compare_one (const GtkCssSelector *a,
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const GtkCssSelector *b)
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{
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return 0;
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}
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/* DESCENDANT */
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static void
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gtk_css_selector_descendant_print (const GtkCssSelector *selector,
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GString *string)
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{
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g_string_append_c (string, ' ');
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}
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static gboolean
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gtk_css_selector_descendant_foreach_matcher (const GtkCssSelector *selector,
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const GtkCssMatcher *matcher,
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GtkCssSelectorForeachFunc func,
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gpointer data)
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{
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GtkCssMatcher ancestor;
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while (_gtk_css_matcher_get_parent (&ancestor, matcher))
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{
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matcher = &ancestor;
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if (func (selector, &ancestor, data))
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return TRUE;
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/* any matchers are dangerous here, as we may loop forever, but
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we can terminate now as all possible matches have already been added */
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if (_gtk_css_matcher_matches_any (matcher))
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break;
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}
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return FALSE;
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}
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static GtkCssChange
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gtk_css_selector_descendant_get_change (const GtkCssSelector *selector, GtkCssChange previous_change)
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{
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return _gtk_css_change_for_child (previous_change);
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}
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static const GtkCssSelectorClass GTK_CSS_SELECTOR_DESCENDANT = {
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"descendant",
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gtk_css_selector_descendant_print,
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gtk_css_selector_descendant_foreach_matcher,
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gtk_css_selector_default_match_one,
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gtk_css_selector_descendant_get_change,
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gtk_css_selector_default_add_specificity,
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gtk_css_selector_default_hash_one,
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gtk_css_selector_default_compare_one,
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FALSE
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};
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/* CHILD */
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static void
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gtk_css_selector_child_print (const GtkCssSelector *selector,
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GString *string)
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{
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g_string_append (string, " > ");
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}
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static gboolean
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gtk_css_selector_child_foreach_matcher (const GtkCssSelector *selector,
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const GtkCssMatcher *matcher,
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GtkCssSelectorForeachFunc func,
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gpointer data)
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{
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GtkCssMatcher parent;
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if (!_gtk_css_matcher_get_parent (&parent, matcher))
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return FALSE;
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return func (selector, &parent, data);
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}
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static GtkCssChange
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gtk_css_selector_child_get_change (const GtkCssSelector *selector, GtkCssChange previous_change)
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{
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return _gtk_css_change_for_child (previous_change);
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}
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static const GtkCssSelectorClass GTK_CSS_SELECTOR_CHILD = {
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"child",
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gtk_css_selector_child_print,
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gtk_css_selector_child_foreach_matcher,
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gtk_css_selector_default_match_one,
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gtk_css_selector_child_get_change,
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gtk_css_selector_default_add_specificity,
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gtk_css_selector_default_hash_one,
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gtk_css_selector_default_compare_one,
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FALSE
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};
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/* SIBLING */
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static void
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gtk_css_selector_sibling_print (const GtkCssSelector *selector,
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GString *string)
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{
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g_string_append (string, " ~ ");
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}
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static gboolean
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gtk_css_selector_sibling_foreach_matcher (const GtkCssSelector *selector,
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const GtkCssMatcher *matcher,
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GtkCssSelectorForeachFunc func,
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gpointer data)
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{
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GtkCssMatcher previous;
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while (_gtk_css_matcher_get_previous (&previous, matcher))
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{
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matcher = &previous;
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if (func (selector, matcher, data))
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return TRUE;
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/* any matchers are dangerous here, as we may loop forever, but
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we can terminate now as all possible matches have already been added */
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if (_gtk_css_matcher_matches_any (matcher))
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break;
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}
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return FALSE;
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}
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static GtkCssChange
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gtk_css_selector_sibling_get_change (const GtkCssSelector *selector, GtkCssChange previous_change)
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{
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return _gtk_css_change_for_sibling (previous_change);
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}
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static const GtkCssSelectorClass GTK_CSS_SELECTOR_SIBLING = {
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"sibling",
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gtk_css_selector_sibling_print,
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gtk_css_selector_sibling_foreach_matcher,
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gtk_css_selector_default_match_one,
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gtk_css_selector_sibling_get_change,
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gtk_css_selector_default_add_specificity,
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gtk_css_selector_default_hash_one,
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gtk_css_selector_default_compare_one,
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FALSE
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};
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/* ADJACENT */
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static void
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gtk_css_selector_adjacent_print (const GtkCssSelector *selector,
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GString *string)
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{
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g_string_append (string, " + ");
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}
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static gboolean
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gtk_css_selector_adjacent_foreach_matcher (const GtkCssSelector *selector,
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const GtkCssMatcher *matcher,
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GtkCssSelectorForeachFunc func,
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gpointer data)
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{
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GtkCssMatcher previous;
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if (!_gtk_css_matcher_get_previous (&previous, matcher))
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return FALSE;
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return func (selector, &previous, data);
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}
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static GtkCssChange
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gtk_css_selector_adjacent_get_change (const GtkCssSelector *selector, GtkCssChange previous_change)
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{
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return _gtk_css_change_for_sibling (previous_change);
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}
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static const GtkCssSelectorClass GTK_CSS_SELECTOR_ADJACENT = {
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"adjacent",
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gtk_css_selector_adjacent_print,
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gtk_css_selector_adjacent_foreach_matcher,
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gtk_css_selector_default_match_one,
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gtk_css_selector_adjacent_get_change,
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gtk_css_selector_default_add_specificity,
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gtk_css_selector_default_hash_one,
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gtk_css_selector_default_compare_one,
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FALSE
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};
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/* SIMPLE SELECTOR DEFINE */
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#define DEFINE_SIMPLE_SELECTOR(n, \
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c, \
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print_func, \
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match_func, \
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hash_func, \
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comp_func, \
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increase_id_specificity, \
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increase_class_specificity, \
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increase_element_specificity) \
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static void \
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gtk_css_selector_ ## n ## _print (const GtkCssSelector *selector, \
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GString *string) \
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{ \
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print_func (selector, string); \
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} \
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\
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static void \
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gtk_css_selector_not_ ## n ## _print (const GtkCssSelector *selector, \
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GString *string) \
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{ \
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g_string_append (string, ":not("); \
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print_func (selector, string); \
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g_string_append (string, ")"); \
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} \
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\
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static gboolean \
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gtk_css_selector_not_ ## n ## _match_one (const GtkCssSelector *selector, \
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const GtkCssMatcher *matcher) \
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{ \
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return !match_func (selector, matcher); \
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} \
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\
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static GtkCssChange \
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gtk_css_selector_ ## n ## _get_change (const GtkCssSelector *selector, GtkCssChange previous_change) \
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{ \
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return previous_change | GTK_CSS_CHANGE_ ## c; \
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} \
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\
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static void \
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gtk_css_selector_ ## n ## _add_specificity (const GtkCssSelector *selector, \
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guint *ids, \
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guint *classes, \
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guint *elements) \
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{ \
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if (increase_id_specificity) \
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(*ids)++; \
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if (increase_class_specificity) \
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(*classes)++; \
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if (increase_element_specificity) \
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(*elements)++; \
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} \
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\
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static const GtkCssSelectorClass GTK_CSS_SELECTOR_ ## c = { \
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G_STRINGIFY(n), \
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gtk_css_selector_ ## n ## _print, \
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gtk_css_selector_default_foreach_matcher, \
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match_func, \
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gtk_css_selector_ ## n ## _get_change, \
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gtk_css_selector_ ## n ## _add_specificity, \
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hash_func, \
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comp_func, \
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TRUE \
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};\
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\
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static const GtkCssSelectorClass GTK_CSS_SELECTOR_NOT_ ## c = { \
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"not_" G_STRINGIFY(n), \
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gtk_css_selector_not_ ## n ## _print, \
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gtk_css_selector_default_foreach_matcher, \
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gtk_css_selector_not_ ## n ## _match_one, \
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gtk_css_selector_ ## n ## _get_change, \
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gtk_css_selector_ ## n ## _add_specificity, \
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hash_func, \
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comp_func, \
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TRUE \
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};
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|
/* ANY */
|
|
|
|
static void
|
|
print_any (const GtkCssSelector *selector,
|
|
GString *string)
|
|
{
|
|
g_string_append_c (string, '*');
|
|
}
|
|
|
|
static gboolean
|
|
match_any (const GtkCssSelector *selector,
|
|
const GtkCssMatcher *matcher)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
#undef GTK_CSS_CHANGE_ANY
|
|
#define GTK_CSS_CHANGE_ANY 0
|
|
DEFINE_SIMPLE_SELECTOR(any, ANY, print_any, match_any,
|
|
gtk_css_selector_default_hash_one, gtk_css_selector_default_compare_one,
|
|
FALSE, FALSE, FALSE)
|
|
#undef GTK_CSS_CHANGE_ANY
|
|
|
|
/* NAME */
|
|
|
|
static void
|
|
print_name (const GtkCssSelector *selector,
|
|
GString *string)
|
|
{
|
|
g_string_append (string, selector->name.name);
|
|
}
|
|
|
|
static gboolean
|
|
match_name (const GtkCssSelector *selector,
|
|
const GtkCssMatcher *matcher)
|
|
{
|
|
return _gtk_css_matcher_has_name (matcher, selector->name.name);
|
|
}
|
|
|
|
static guint
|
|
hash_name (const GtkCssSelector *a)
|
|
{
|
|
return g_str_hash (a->name.name);
|
|
}
|
|
|
|
static int
|
|
comp_name (const GtkCssSelector *a,
|
|
const GtkCssSelector *b)
|
|
{
|
|
return strcmp (a->name.name,
|
|
b->name.name);
|
|
}
|
|
|
|
DEFINE_SIMPLE_SELECTOR(name, NAME, print_name, match_name, hash_name, comp_name, FALSE, FALSE, TRUE)
|
|
|
|
/* CLASS */
|
|
|
|
static void
|
|
print_class (const GtkCssSelector *selector,
|
|
GString *string)
|
|
{
|
|
g_string_append_c (string, '.');
|
|
g_string_append (string, g_quark_to_string (selector->style_class.style_class));
|
|
}
|
|
|
|
static gboolean
|
|
match_class (const GtkCssSelector *selector,
|
|
const GtkCssMatcher *matcher)
|
|
{
|
|
return _gtk_css_matcher_has_class (matcher, selector->style_class.style_class);
|
|
}
|
|
|
|
static guint
|
|
hash_class (const GtkCssSelector *a)
|
|
{
|
|
return a->style_class.style_class;
|
|
}
|
|
|
|
static int
|
|
comp_class (const GtkCssSelector *a,
|
|
const GtkCssSelector *b)
|
|
{
|
|
if (a->style_class.style_class < b->style_class.style_class)
|
|
return -1;
|
|
if (a->style_class.style_class > b->style_class.style_class)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SIMPLE_SELECTOR(class, CLASS, print_class, match_class, hash_class, comp_class, FALSE, TRUE, FALSE)
|
|
|
|
/* ID */
|
|
|
|
static void
|
|
print_id (const GtkCssSelector *selector,
|
|
GString *string)
|
|
{
|
|
g_string_append_c (string, '#');
|
|
g_string_append (string, selector->id.name);
|
|
}
|
|
|
|
static gboolean
|
|
match_id (const GtkCssSelector *selector,
|
|
const GtkCssMatcher *matcher)
|
|
{
|
|
return _gtk_css_matcher_has_id (matcher, selector->id.name);
|
|
}
|
|
|
|
static guint
|
|
hash_id (const GtkCssSelector *a)
|
|
{
|
|
return GPOINTER_TO_UINT (a->id.name);
|
|
}
|
|
|
|
static int
|
|
comp_id (const GtkCssSelector *a,
|
|
const GtkCssSelector *b)
|
|
{
|
|
if (a->id.name < b->id.name)
|
|
return -1;
|
|
else if (a->id.name > b->id.name)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SIMPLE_SELECTOR(id, ID, print_id, match_id, hash_id, comp_id, TRUE, FALSE, FALSE)
|
|
|
|
const gchar *
|
|
gtk_css_pseudoclass_name (GtkStateFlags state)
|
|
{
|
|
static const char * state_names[] = {
|
|
"active",
|
|
"hover",
|
|
"selected",
|
|
"disabled",
|
|
"indeterminate",
|
|
"focus",
|
|
"backdrop",
|
|
"dir(ltr)",
|
|
"dir(rtl)",
|
|
"link",
|
|
"visited",
|
|
"checked",
|
|
"drop(active)"
|
|
};
|
|
guint i;
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (state_names); i++)
|
|
{
|
|
if (state == (1 << i))
|
|
return state_names[i];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* PSEUDOCLASS FOR STATE */
|
|
static void
|
|
print_pseudoclass_state (const GtkCssSelector *selector,
|
|
GString *string)
|
|
{
|
|
g_string_append_c (string, ':');
|
|
g_string_append (string, gtk_css_pseudoclass_name (selector->state.state));
|
|
}
|
|
|
|
static gboolean
|
|
match_pseudoclass_state (const GtkCssSelector *selector,
|
|
const GtkCssMatcher *matcher)
|
|
{
|
|
return (_gtk_css_matcher_get_state (matcher) & selector->state.state) == selector->state.state;
|
|
}
|
|
|
|
static guint
|
|
hash_pseudoclass_state (const GtkCssSelector *selector)
|
|
{
|
|
return selector->state.state;
|
|
}
|
|
|
|
|
|
static int
|
|
comp_pseudoclass_state (const GtkCssSelector *a,
|
|
const GtkCssSelector *b)
|
|
{
|
|
return a->state.state - b->state.state;
|
|
}
|
|
|
|
#define GTK_CSS_CHANGE_PSEUDOCLASS_STATE GTK_CSS_CHANGE_STATE
|
|
DEFINE_SIMPLE_SELECTOR(pseudoclass_state, PSEUDOCLASS_STATE, print_pseudoclass_state,
|
|
match_pseudoclass_state, hash_pseudoclass_state, comp_pseudoclass_state,
|
|
FALSE, TRUE, FALSE)
|
|
#undef GTK_CSS_CHANGE_PSEUDOCLASS_STATE
|
|
|
|
/* PSEUDOCLASS FOR POSITION */
|
|
|
|
static void
|
|
print_pseudoclass_position (const GtkCssSelector *selector,
|
|
GString *string)
|
|
{
|
|
switch (selector->position.type)
|
|
{
|
|
case POSITION_FORWARD:
|
|
if (selector->position.a == 0)
|
|
{
|
|
if (selector->position.b == 1)
|
|
g_string_append (string, ":first-child");
|
|
else
|
|
g_string_append_printf (string, ":nth-child(%d)", selector->position.b);
|
|
}
|
|
else if (selector->position.a == 2 && selector->position.b == 0)
|
|
g_string_append (string, ":nth-child(even)");
|
|
else if (selector->position.a == 2 && selector->position.b == 1)
|
|
g_string_append (string, ":nth-child(odd)");
|
|
else
|
|
{
|
|
g_string_append (string, ":nth-child(");
|
|
if (selector->position.a == 1)
|
|
g_string_append (string, "n");
|
|
else if (selector->position.a == -1)
|
|
g_string_append (string, "-n");
|
|
else
|
|
g_string_append_printf (string, "%dn", selector->position.a);
|
|
if (selector->position.b > 0)
|
|
g_string_append_printf (string, "+%d)", selector->position.b);
|
|
else if (selector->position.b < 0)
|
|
g_string_append_printf (string, "%d)", selector->position.b);
|
|
else
|
|
g_string_append (string, ")");
|
|
}
|
|
break;
|
|
case POSITION_BACKWARD:
|
|
if (selector->position.a == 0)
|
|
{
|
|
if (selector->position.b == 1)
|
|
g_string_append (string, ":last-child");
|
|
else
|
|
g_string_append_printf (string, ":nth-last-child(%d)", selector->position.b);
|
|
}
|
|
else if (selector->position.a == 2 && selector->position.b == 0)
|
|
g_string_append (string, ":nth-last-child(even)");
|
|
else if (selector->position.a == 2 && selector->position.b == 1)
|
|
g_string_append (string, ":nth-last-child(odd)");
|
|
else
|
|
{
|
|
g_string_append (string, ":nth-last-child(");
|
|
if (selector->position.a == 1)
|
|
g_string_append (string, "n");
|
|
else if (selector->position.a == -1)
|
|
g_string_append (string, "-n");
|
|
else
|
|
g_string_append_printf (string, "%dn", selector->position.a);
|
|
if (selector->position.b > 0)
|
|
g_string_append_printf (string, "+%d)", selector->position.b);
|
|
else if (selector->position.b < 0)
|
|
g_string_append_printf (string, "%d)", selector->position.b);
|
|
else
|
|
g_string_append (string, ")");
|
|
}
|
|
break;
|
|
case POSITION_ONLY:
|
|
g_string_append (string, ":only-child");
|
|
break;
|
|
case POSITION_SORTED:
|
|
g_string_append (string, ":sorted");
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
break;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
match_pseudoclass_position (const GtkCssSelector *selector,
|
|
const GtkCssMatcher *matcher)
|
|
{
|
|
switch (selector->position.type)
|
|
{
|
|
case POSITION_FORWARD:
|
|
if (!_gtk_css_matcher_has_position (matcher, TRUE, selector->position.a, selector->position.b))
|
|
return FALSE;
|
|
break;
|
|
case POSITION_BACKWARD:
|
|
if (!_gtk_css_matcher_has_position (matcher, FALSE, selector->position.a, selector->position.b))
|
|
return FALSE;
|
|
break;
|
|
case POSITION_ONLY:
|
|
if (!_gtk_css_matcher_has_position (matcher, TRUE, 0, 1) ||
|
|
!_gtk_css_matcher_has_position (matcher, FALSE, 0, 1))
|
|
return FALSE;
|
|
break;
|
|
case POSITION_SORTED:
|
|
return FALSE;
|
|
default:
|
|
g_assert_not_reached ();
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static guint
|
|
hash_pseudoclass_position (const GtkCssSelector *a)
|
|
{
|
|
return (((a->position.type << POSITION_NUMBER_BITS) | a->position.a) << POSITION_NUMBER_BITS) | a->position.b;
|
|
}
|
|
|
|
static int
|
|
comp_pseudoclass_position (const GtkCssSelector *a,
|
|
const GtkCssSelector *b)
|
|
{
|
|
int diff;
|
|
|
|
diff = a->position.type - b->position.type;
|
|
if (diff)
|
|
return diff;
|
|
|
|
diff = a->position.a - b->position.a;
|
|
if (diff)
|
|
return diff;
|
|
|
|
return a->position.b - b->position.b;
|
|
}
|
|
|
|
static GtkCssChange
|
|
change_pseudoclass_position (const GtkCssSelector *selector)
|
|
{
|
|
switch (selector->position.type)
|
|
{
|
|
case POSITION_FORWARD:
|
|
if (selector->position.a == 0 && selector->position.b == 1)
|
|
return GTK_CSS_CHANGE_FIRST_CHILD;
|
|
else
|
|
return GTK_CSS_CHANGE_NTH_CHILD;
|
|
case POSITION_BACKWARD:
|
|
if (selector->position.a == 0 && selector->position.b == 1)
|
|
return GTK_CSS_CHANGE_LAST_CHILD;
|
|
else
|
|
return GTK_CSS_CHANGE_NTH_LAST_CHILD;
|
|
case POSITION_ONLY:
|
|
return GTK_CSS_CHANGE_FIRST_CHILD | GTK_CSS_CHANGE_LAST_CHILD;
|
|
default:
|
|
g_assert_not_reached ();
|
|
case POSITION_SORTED:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
#define GTK_CSS_CHANGE_PSEUDOCLASS_POSITION change_pseudoclass_position(selector)
|
|
DEFINE_SIMPLE_SELECTOR(pseudoclass_position, PSEUDOCLASS_POSITION, print_pseudoclass_position,
|
|
match_pseudoclass_position, hash_pseudoclass_position, comp_pseudoclass_position,
|
|
FALSE, TRUE, FALSE)
|
|
#undef GTK_CSS_CHANGE_PSEUDOCLASS_POSITION
|
|
/* API */
|
|
|
|
static guint
|
|
gtk_css_selector_size (const GtkCssSelector *selector)
|
|
{
|
|
guint size = 0;
|
|
|
|
while (selector)
|
|
{
|
|
selector = gtk_css_selector_previous (selector);
|
|
size++;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
static GtkCssSelector *
|
|
gtk_css_selector_new (const GtkCssSelectorClass *class,
|
|
GtkCssSelector *selector)
|
|
{
|
|
guint size;
|
|
|
|
size = gtk_css_selector_size (selector);
|
|
selector = g_realloc (selector, sizeof (GtkCssSelector) * (size + 1) + sizeof (gpointer));
|
|
if (size == 0)
|
|
selector[1].class = NULL;
|
|
else
|
|
memmove (selector + 1, selector, sizeof (GtkCssSelector) * size + sizeof (gpointer));
|
|
|
|
memset (selector, 0, sizeof (GtkCssSelector));
|
|
selector->class = class;
|
|
|
|
return selector;
|
|
}
|
|
|
|
static GtkCssSelector *
|
|
parse_selector_class (GtkCssParser *parser,
|
|
GtkCssSelector *selector,
|
|
gboolean negate)
|
|
{
|
|
char *name;
|
|
|
|
name = _gtk_css_parser_try_name (parser, FALSE);
|
|
|
|
if (name == NULL)
|
|
{
|
|
_gtk_css_parser_error (parser, "Expected a valid name for class");
|
|
if (selector)
|
|
_gtk_css_selector_free (selector);
|
|
return NULL;
|
|
}
|
|
|
|
selector = gtk_css_selector_new (negate ? >K_CSS_SELECTOR_NOT_CLASS
|
|
: >K_CSS_SELECTOR_CLASS,
|
|
selector);
|
|
selector->style_class.style_class = g_quark_from_string (name);
|
|
|
|
g_free (name);
|
|
|
|
return selector;
|
|
}
|
|
|
|
static GtkCssSelector *
|
|
parse_selector_id (GtkCssParser *parser,
|
|
GtkCssSelector *selector,
|
|
gboolean negate)
|
|
{
|
|
char *name;
|
|
|
|
name = _gtk_css_parser_try_name (parser, FALSE);
|
|
|
|
if (name == NULL)
|
|
{
|
|
_gtk_css_parser_error (parser, "Expected a valid name for id");
|
|
if (selector)
|
|
_gtk_css_selector_free (selector);
|
|
return NULL;
|
|
}
|
|
|
|
selector = gtk_css_selector_new (negate ? >K_CSS_SELECTOR_NOT_ID
|
|
: >K_CSS_SELECTOR_ID,
|
|
selector);
|
|
selector->id.name = g_intern_string (name);
|
|
|
|
g_free (name);
|
|
|
|
return selector;
|
|
}
|
|
|
|
static GtkCssSelector *
|
|
parse_selector_pseudo_class_nth_child (GtkCssParser *parser,
|
|
GtkCssSelector *selector,
|
|
PositionType type,
|
|
gboolean negate)
|
|
{
|
|
int a, b;
|
|
|
|
if (!_gtk_css_parser_try (parser, "(", TRUE))
|
|
{
|
|
_gtk_css_parser_error (parser, "Missing opening bracket for pseudo-class");
|
|
if (selector)
|
|
_gtk_css_selector_free (selector);
|
|
return NULL;
|
|
}
|
|
|
|
if (_gtk_css_parser_try (parser, "even", TRUE))
|
|
{
|
|
a = 2;
|
|
b = 0;
|
|
}
|
|
else if (_gtk_css_parser_try (parser, "odd", TRUE))
|
|
{
|
|
a = 2;
|
|
b = 1;
|
|
}
|
|
else if (type == POSITION_FORWARD &&
|
|
_gtk_css_parser_try (parser, "first", TRUE))
|
|
{
|
|
a = 0;
|
|
b = 1;
|
|
}
|
|
else if (type == POSITION_FORWARD &&
|
|
_gtk_css_parser_try (parser, "last", TRUE))
|
|
{
|
|
a = 0;
|
|
b = 1;
|
|
type = POSITION_BACKWARD;
|
|
}
|
|
else
|
|
{
|
|
int multiplier;
|
|
|
|
if (_gtk_css_parser_try (parser, "+", TRUE))
|
|
multiplier = 1;
|
|
else if (_gtk_css_parser_try (parser, "-", TRUE))
|
|
multiplier = -1;
|
|
else
|
|
multiplier = 1;
|
|
|
|
if (_gtk_css_parser_try_int (parser, &a))
|
|
{
|
|
if (a < 0)
|
|
{
|
|
_gtk_css_parser_error (parser, "Expected an integer");
|
|
if (selector)
|
|
_gtk_css_selector_free (selector);
|
|
return NULL;
|
|
}
|
|
a *= multiplier;
|
|
}
|
|
else if (_gtk_css_parser_has_prefix (parser, "n"))
|
|
{
|
|
a = multiplier;
|
|
}
|
|
else
|
|
{
|
|
_gtk_css_parser_error (parser, "Expected an integer");
|
|
if (selector)
|
|
_gtk_css_selector_free (selector);
|
|
return NULL;
|
|
}
|
|
|
|
if (_gtk_css_parser_try (parser, "n", TRUE))
|
|
{
|
|
if (_gtk_css_parser_try (parser, "+", TRUE))
|
|
multiplier = 1;
|
|
else if (_gtk_css_parser_try (parser, "-", TRUE))
|
|
multiplier = -1;
|
|
else
|
|
multiplier = 1;
|
|
|
|
if (_gtk_css_parser_try_int (parser, &b))
|
|
{
|
|
if (b < 0)
|
|
{
|
|
_gtk_css_parser_error (parser, "Expected an integer");
|
|
if (selector)
|
|
_gtk_css_selector_free (selector);
|
|
return NULL;
|
|
}
|
|
}
|
|
else
|
|
b = 0;
|
|
|
|
b *= multiplier;
|
|
}
|
|
else
|
|
{
|
|
b = a;
|
|
a = 0;
|
|
}
|
|
}
|
|
|
|
if (!_gtk_css_parser_try (parser, ")", FALSE))
|
|
{
|
|
_gtk_css_parser_error (parser, "Missing closing bracket for pseudo-class");
|
|
if (selector)
|
|
_gtk_css_selector_free (selector);
|
|
return NULL;
|
|
}
|
|
|
|
selector = gtk_css_selector_new (negate ? >K_CSS_SELECTOR_NOT_PSEUDOCLASS_POSITION
|
|
: >K_CSS_SELECTOR_PSEUDOCLASS_POSITION,
|
|
selector);
|
|
selector->position.type = type;
|
|
selector->position.a = a;
|
|
selector->position.b = b;
|
|
|
|
return selector;
|
|
}
|
|
|
|
static GtkCssSelector *
|
|
parse_selector_pseudo_class (GtkCssParser *parser,
|
|
GtkCssSelector *selector,
|
|
gboolean negate)
|
|
{
|
|
static const struct {
|
|
const char *name;
|
|
gboolean deprecated;
|
|
GtkStateFlags state_flag;
|
|
PositionType position_type;
|
|
int position_a;
|
|
int position_b;
|
|
} pseudo_classes[] = {
|
|
{ "first-child", 0, 0, POSITION_FORWARD, 0, 1 },
|
|
{ "last-child", 0, 0, POSITION_BACKWARD, 0, 1 },
|
|
{ "only-child", 0, 0, POSITION_ONLY, 0, 0 },
|
|
{ "sorted", 1, 0, POSITION_SORTED, 0, 0 },
|
|
{ "active", 0, GTK_STATE_FLAG_ACTIVE, },
|
|
{ "prelight", 1, GTK_STATE_FLAG_PRELIGHT, },
|
|
{ "hover", 0, GTK_STATE_FLAG_PRELIGHT, },
|
|
{ "selected", 0, GTK_STATE_FLAG_SELECTED, },
|
|
{ "insensitive", 1, GTK_STATE_FLAG_INSENSITIVE, },
|
|
{ "disabled", 0, GTK_STATE_FLAG_INSENSITIVE, },
|
|
{ "inconsistent", 1, GTK_STATE_FLAG_INCONSISTENT, },
|
|
{ "indeterminate", 0, GTK_STATE_FLAG_INCONSISTENT, },
|
|
{ "focused", 1, GTK_STATE_FLAG_FOCUSED, },
|
|
{ "focus", 0, GTK_STATE_FLAG_FOCUSED, },
|
|
{ "backdrop", 0, GTK_STATE_FLAG_BACKDROP, },
|
|
{ "dir(ltr)", 0, GTK_STATE_FLAG_DIR_LTR, },
|
|
{ "dir(rtl)", 0, GTK_STATE_FLAG_DIR_RTL, },
|
|
{ "link", 0, GTK_STATE_FLAG_LINK, },
|
|
{ "visited", 0, GTK_STATE_FLAG_VISITED, },
|
|
{ "checked", 0, GTK_STATE_FLAG_CHECKED, },
|
|
{ "drop(active)", 0, GTK_STATE_FLAG_DROP_ACTIVE, }
|
|
|
|
};
|
|
guint i;
|
|
|
|
if (_gtk_css_parser_try (parser, "nth-child", FALSE))
|
|
return parse_selector_pseudo_class_nth_child (parser, selector, POSITION_FORWARD, negate);
|
|
else if (_gtk_css_parser_try (parser, "nth-last-child", FALSE))
|
|
return parse_selector_pseudo_class_nth_child (parser, selector, POSITION_BACKWARD, negate);
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (pseudo_classes); i++)
|
|
{
|
|
if (_gtk_css_parser_try (parser, pseudo_classes[i].name, FALSE))
|
|
{
|
|
if (pseudo_classes[i].state_flag)
|
|
{
|
|
selector = gtk_css_selector_new (negate ? >K_CSS_SELECTOR_NOT_PSEUDOCLASS_STATE
|
|
: >K_CSS_SELECTOR_PSEUDOCLASS_STATE,
|
|
selector);
|
|
selector->state.state = pseudo_classes[i].state_flag;
|
|
if (pseudo_classes[i].deprecated)
|
|
{
|
|
if (pseudo_classes[i + 1].state_flag == pseudo_classes[i].state_flag)
|
|
_gtk_css_parser_error_full (parser,
|
|
GTK_CSS_PROVIDER_ERROR_DEPRECATED,
|
|
"The :%s pseudo-class is deprecated. Use :%s instead.",
|
|
pseudo_classes[i].name,
|
|
pseudo_classes[i + 1].name);
|
|
else
|
|
_gtk_css_parser_error_full (parser,
|
|
GTK_CSS_PROVIDER_ERROR_DEPRECATED,
|
|
"The :%s pseudo-class is deprecated.",
|
|
pseudo_classes[i].name);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
selector = gtk_css_selector_new (negate ? >K_CSS_SELECTOR_NOT_PSEUDOCLASS_POSITION
|
|
: >K_CSS_SELECTOR_PSEUDOCLASS_POSITION,
|
|
selector);
|
|
selector->position.type = pseudo_classes[i].position_type;
|
|
selector->position.a = pseudo_classes[i].position_a;
|
|
selector->position.b = pseudo_classes[i].position_b;
|
|
}
|
|
return selector;
|
|
}
|
|
}
|
|
|
|
_gtk_css_parser_error (parser, "Missing name of pseudo-class");
|
|
if (selector)
|
|
_gtk_css_selector_free (selector);
|
|
return NULL;
|
|
}
|
|
|
|
static GtkCssSelector *
|
|
parse_selector_negation (GtkCssParser *parser,
|
|
GtkCssSelector *selector)
|
|
{
|
|
char *name;
|
|
|
|
name = _gtk_css_parser_try_ident (parser, FALSE);
|
|
if (name)
|
|
{
|
|
selector = gtk_css_selector_new (>K_CSS_SELECTOR_NOT_NAME,
|
|
selector);
|
|
selector->name.name = g_intern_string (name);
|
|
g_free (name);
|
|
}
|
|
else if (_gtk_css_parser_try (parser, "*", FALSE))
|
|
selector = gtk_css_selector_new (>K_CSS_SELECTOR_NOT_ANY, selector);
|
|
else if (_gtk_css_parser_try (parser, "#", FALSE))
|
|
selector = parse_selector_id (parser, selector, TRUE);
|
|
else if (_gtk_css_parser_try (parser, ".", FALSE))
|
|
selector = parse_selector_class (parser, selector, TRUE);
|
|
else if (_gtk_css_parser_try (parser, ":", FALSE))
|
|
selector = parse_selector_pseudo_class (parser, selector, TRUE);
|
|
else
|
|
{
|
|
_gtk_css_parser_error (parser, "Not a valid selector for :not()");
|
|
if (selector)
|
|
_gtk_css_selector_free (selector);
|
|
return NULL;
|
|
}
|
|
|
|
_gtk_css_parser_skip_whitespace (parser);
|
|
|
|
if (!_gtk_css_parser_try (parser, ")", FALSE))
|
|
{
|
|
_gtk_css_parser_error (parser, "Missing closing bracket for :not()");
|
|
if (selector)
|
|
_gtk_css_selector_free (selector);
|
|
return NULL;
|
|
}
|
|
|
|
return selector;
|
|
}
|
|
|
|
static GtkCssSelector *
|
|
parse_simple_selector (GtkCssParser *parser,
|
|
GtkCssSelector *selector)
|
|
{
|
|
gboolean parsed_something = FALSE;
|
|
char *name;
|
|
|
|
name = _gtk_css_parser_try_ident (parser, FALSE);
|
|
if (name)
|
|
{
|
|
selector = gtk_css_selector_new (>K_CSS_SELECTOR_NAME,
|
|
selector);
|
|
selector->name.name = g_intern_string (name);
|
|
g_free (name);
|
|
parsed_something = TRUE;
|
|
}
|
|
else if (_gtk_css_parser_try (parser, "*", FALSE))
|
|
{
|
|
selector = gtk_css_selector_new (>K_CSS_SELECTOR_ANY, selector);
|
|
parsed_something = TRUE;
|
|
}
|
|
|
|
do {
|
|
if (_gtk_css_parser_try (parser, "#", FALSE))
|
|
selector = parse_selector_id (parser, selector, FALSE);
|
|
else if (_gtk_css_parser_try (parser, ".", FALSE))
|
|
selector = parse_selector_class (parser, selector, FALSE);
|
|
else if (_gtk_css_parser_try (parser, ":not(", TRUE))
|
|
selector = parse_selector_negation (parser, selector);
|
|
else if (_gtk_css_parser_try (parser, ":", FALSE))
|
|
selector = parse_selector_pseudo_class (parser, selector, FALSE);
|
|
else if (!parsed_something)
|
|
{
|
|
_gtk_css_parser_error (parser, "Expected a valid selector");
|
|
if (selector)
|
|
_gtk_css_selector_free (selector);
|
|
return NULL;
|
|
}
|
|
else
|
|
break;
|
|
|
|
parsed_something = TRUE;
|
|
}
|
|
while (selector && !_gtk_css_parser_is_eof (parser));
|
|
|
|
_gtk_css_parser_skip_whitespace (parser);
|
|
|
|
return selector;
|
|
}
|
|
|
|
GtkCssSelector *
|
|
_gtk_css_selector_parse (GtkCssParser *parser)
|
|
{
|
|
GtkCssSelector *selector = NULL;
|
|
|
|
while ((selector = parse_simple_selector (parser, selector)) &&
|
|
!_gtk_css_parser_is_eof (parser) &&
|
|
!_gtk_css_parser_begins_with (parser, ',') &&
|
|
!_gtk_css_parser_begins_with (parser, '{'))
|
|
{
|
|
if (_gtk_css_parser_try (parser, "+", TRUE))
|
|
selector = gtk_css_selector_new (>K_CSS_SELECTOR_ADJACENT, selector);
|
|
else if (_gtk_css_parser_try (parser, "~", TRUE))
|
|
selector = gtk_css_selector_new (>K_CSS_SELECTOR_SIBLING, selector);
|
|
else if (_gtk_css_parser_try (parser, ">", TRUE))
|
|
selector = gtk_css_selector_new (>K_CSS_SELECTOR_CHILD, selector);
|
|
else
|
|
selector = gtk_css_selector_new (>K_CSS_SELECTOR_DESCENDANT, selector);
|
|
}
|
|
|
|
return selector;
|
|
}
|
|
|
|
void
|
|
_gtk_css_selector_free (GtkCssSelector *selector)
|
|
{
|
|
g_return_if_fail (selector != NULL);
|
|
|
|
g_free (selector);
|
|
}
|
|
|
|
void
|
|
_gtk_css_selector_print (const GtkCssSelector *selector,
|
|
GString * str)
|
|
{
|
|
const GtkCssSelector *previous;
|
|
|
|
g_return_if_fail (selector != NULL);
|
|
|
|
previous = gtk_css_selector_previous (selector);
|
|
if (previous)
|
|
_gtk_css_selector_print (previous, str);
|
|
|
|
selector->class->print (selector, str);
|
|
}
|
|
|
|
char *
|
|
_gtk_css_selector_to_string (const GtkCssSelector *selector)
|
|
{
|
|
GString *string;
|
|
|
|
g_return_val_if_fail (selector != NULL, NULL);
|
|
|
|
string = g_string_new (NULL);
|
|
|
|
_gtk_css_selector_print (selector, string);
|
|
|
|
return g_string_free (string, FALSE);
|
|
}
|
|
|
|
static gboolean
|
|
gtk_css_selector_foreach_match (const GtkCssSelector *selector,
|
|
const GtkCssMatcher *matcher,
|
|
gpointer unused)
|
|
{
|
|
selector = gtk_css_selector_previous (selector);
|
|
|
|
if (selector == NULL)
|
|
return TRUE;
|
|
|
|
if (!gtk_css_selector_match (selector, matcher))
|
|
return FALSE;
|
|
|
|
return gtk_css_selector_foreach (selector, matcher, gtk_css_selector_foreach_match, NULL);
|
|
}
|
|
|
|
/**
|
|
* _gtk_css_selector_matches:
|
|
* @selector: the selector
|
|
* @path: the path to check
|
|
* @state: The state to match
|
|
*
|
|
* Checks if the @selector matches the given @path. If @length is
|
|
* smaller than the number of elements in @path, it is assumed that
|
|
* only the first @length element of @path are valid and the rest
|
|
* does not exist. This is useful for doing parent matches for the
|
|
* 'inherit' keyword.
|
|
*
|
|
* Returns: %TRUE if the selector matches @path
|
|
**/
|
|
gboolean
|
|
_gtk_css_selector_matches (const GtkCssSelector *selector,
|
|
const GtkCssMatcher *matcher)
|
|
{
|
|
|
|
g_return_val_if_fail (selector != NULL, FALSE);
|
|
g_return_val_if_fail (matcher != NULL, FALSE);
|
|
|
|
if (!gtk_css_selector_match (selector, matcher))
|
|
return FALSE;
|
|
|
|
return gtk_css_selector_foreach (selector, matcher, gtk_css_selector_foreach_match, NULL);
|
|
}
|
|
|
|
/* Computes specificity according to CSS 2.1.
|
|
* The arguments must be initialized to 0 */
|
|
static void
|
|
_gtk_css_selector_get_specificity (const GtkCssSelector *selector,
|
|
guint *ids,
|
|
guint *classes,
|
|
guint *elements)
|
|
{
|
|
for (; selector; selector = gtk_css_selector_previous (selector))
|
|
{
|
|
selector->class->add_specificity (selector, ids, classes, elements);
|
|
}
|
|
}
|
|
|
|
int
|
|
_gtk_css_selector_compare (const GtkCssSelector *a,
|
|
const GtkCssSelector *b)
|
|
{
|
|
guint a_ids = 0, a_classes = 0, a_elements = 0;
|
|
guint b_ids = 0, b_classes = 0, b_elements = 0;
|
|
int compare;
|
|
|
|
_gtk_css_selector_get_specificity (a, &a_ids, &a_classes, &a_elements);
|
|
_gtk_css_selector_get_specificity (b, &b_ids, &b_classes, &b_elements);
|
|
|
|
compare = a_ids - b_ids;
|
|
if (compare)
|
|
return compare;
|
|
|
|
compare = a_classes - b_classes;
|
|
if (compare)
|
|
return compare;
|
|
|
|
return a_elements - b_elements;
|
|
}
|
|
|
|
GtkCssChange
|
|
_gtk_css_selector_get_change (const GtkCssSelector *selector)
|
|
{
|
|
if (selector == NULL)
|
|
return 0;
|
|
|
|
return selector->class->get_change (selector, _gtk_css_selector_get_change (gtk_css_selector_previous (selector)));
|
|
}
|
|
|
|
/******************** SelectorTree handling *****************/
|
|
|
|
static GHashTable *
|
|
gtk_css_selectors_count_initial_init (void)
|
|
{
|
|
return g_hash_table_new ((GHashFunc)gtk_css_selector_hash_one, (GEqualFunc)gtk_css_selector_equal);
|
|
}
|
|
|
|
static void
|
|
gtk_css_selectors_count_initial (const GtkCssSelector *selector, GHashTable *hash_one)
|
|
{
|
|
if (!selector->class->is_simple)
|
|
{
|
|
guint count = GPOINTER_TO_INT (g_hash_table_lookup (hash_one, selector));
|
|
g_hash_table_replace (hash_one, (gpointer)selector, GUINT_TO_POINTER (count + 1));
|
|
return;
|
|
}
|
|
|
|
for (;
|
|
selector && selector->class->is_simple;
|
|
selector = gtk_css_selector_previous (selector))
|
|
{
|
|
guint count = GPOINTER_TO_INT (g_hash_table_lookup (hash_one, selector));
|
|
g_hash_table_replace (hash_one, (gpointer)selector, GUINT_TO_POINTER (count + 1));
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gtk_css_selectors_has_initial_selector (const GtkCssSelector *selector, const GtkCssSelector *initial)
|
|
{
|
|
if (!selector->class->is_simple)
|
|
return gtk_css_selector_equal (selector, initial);
|
|
|
|
for (;
|
|
selector && selector->class->is_simple;
|
|
selector = gtk_css_selector_previous (selector))
|
|
{
|
|
if (gtk_css_selector_equal (selector, initial))
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static GtkCssSelector *
|
|
gtk_css_selectors_skip_initial_selector (GtkCssSelector *selector, const GtkCssSelector *initial)
|
|
{
|
|
GtkCssSelector *found;
|
|
GtkCssSelector tmp;
|
|
|
|
/* If the initial simple selector is not first, move it there so we can skip it
|
|
without losing any other selectors */
|
|
if (!gtk_css_selector_equal (selector, initial))
|
|
{
|
|
for (found = selector; found && found->class->is_simple; found = (GtkCssSelector *)gtk_css_selector_previous (found))
|
|
{
|
|
if (gtk_css_selector_equal (found, initial))
|
|
break;
|
|
}
|
|
|
|
g_assert (found != NULL && found->class->is_simple);
|
|
|
|
tmp = *found;
|
|
*found = *selector;
|
|
*selector = tmp;
|
|
}
|
|
|
|
return (GtkCssSelector *)gtk_css_selector_previous (selector);
|
|
}
|
|
|
|
static gboolean
|
|
gtk_css_selector_tree_match_foreach (const GtkCssSelector *selector,
|
|
const GtkCssMatcher *matcher,
|
|
gpointer res)
|
|
{
|
|
const GtkCssSelectorTree *tree = (const GtkCssSelectorTree *) selector;
|
|
const GtkCssSelectorTree *prev;
|
|
|
|
if (!gtk_css_selector_match (selector, matcher))
|
|
return FALSE;
|
|
|
|
gtk_css_selector_tree_found_match (tree, res);
|
|
|
|
for (prev = gtk_css_selector_tree_get_previous (tree);
|
|
prev != NULL;
|
|
prev = gtk_css_selector_tree_get_sibling (prev))
|
|
gtk_css_selector_foreach (&prev->selector, matcher, gtk_css_selector_tree_match_foreach, res);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
GPtrArray *
|
|
_gtk_css_selector_tree_match_all (const GtkCssSelectorTree *tree,
|
|
const GtkCssMatcher *matcher)
|
|
{
|
|
GPtrArray *array = NULL;
|
|
|
|
for (; tree != NULL;
|
|
tree = gtk_css_selector_tree_get_sibling (tree))
|
|
gtk_css_selector_foreach (&tree->selector, matcher, gtk_css_selector_tree_match_foreach, &array);
|
|
|
|
return array;
|
|
}
|
|
|
|
/* When checking for changes via the tree we need to know if a rule further
|
|
down the tree matched, because if so we need to add "our bit" to the
|
|
Change. For instance in a a match like *.class:active we'll
|
|
get a tree that first checks :active, if that matches we continue down
|
|
to the tree, and if we get a match we add CHANGE_CLASS. However, the
|
|
end of the tree where we have a match is an ANY which doesn't actually
|
|
modify the change, so we don't know if we have a match or not. We fix
|
|
this by setting GTK_CSS_CHANGE_GOT_MATCH which lets us guarantee
|
|
that change != 0 on any match. */
|
|
#define GTK_CSS_CHANGE_GOT_MATCH GTK_CSS_CHANGE_RESERVED_BIT
|
|
|
|
static GtkCssChange
|
|
gtk_css_selector_tree_collect_change (const GtkCssSelectorTree *tree)
|
|
{
|
|
GtkCssChange change = 0;
|
|
const GtkCssSelectorTree *prev;
|
|
|
|
for (prev = gtk_css_selector_tree_get_previous (tree);
|
|
prev != NULL;
|
|
prev = gtk_css_selector_tree_get_sibling (prev))
|
|
change |= gtk_css_selector_tree_collect_change (prev);
|
|
|
|
change = tree->selector.class->get_change (&tree->selector, change);
|
|
|
|
return change;
|
|
}
|
|
|
|
static GtkCssChange
|
|
gtk_css_selector_tree_get_change (const GtkCssSelectorTree *tree,
|
|
const GtkCssMatcher *matcher)
|
|
{
|
|
GtkCssChange change = 0;
|
|
const GtkCssSelectorTree *prev;
|
|
|
|
if (!gtk_css_selector_match (&tree->selector, matcher))
|
|
return 0;
|
|
|
|
if (!tree->selector.class->is_simple)
|
|
return gtk_css_selector_tree_collect_change (tree) | GTK_CSS_CHANGE_GOT_MATCH;
|
|
|
|
for (prev = gtk_css_selector_tree_get_previous (tree);
|
|
prev != NULL;
|
|
prev = gtk_css_selector_tree_get_sibling (prev))
|
|
change |= gtk_css_selector_tree_get_change (prev, matcher);
|
|
|
|
if (change || gtk_css_selector_tree_get_matches (tree))
|
|
change = tree->selector.class->get_change (&tree->selector, change & ~GTK_CSS_CHANGE_GOT_MATCH) | GTK_CSS_CHANGE_GOT_MATCH;
|
|
|
|
return change;
|
|
}
|
|
|
|
GtkCssChange
|
|
_gtk_css_selector_tree_get_change_all (const GtkCssSelectorTree *tree,
|
|
const GtkCssMatcher *matcher)
|
|
{
|
|
GtkCssChange change;
|
|
|
|
change = 0;
|
|
|
|
/* no need to foreach here because we abort for non-simple selectors */
|
|
for (; tree != NULL;
|
|
tree = gtk_css_selector_tree_get_sibling (tree))
|
|
change |= gtk_css_selector_tree_get_change (tree, matcher);
|
|
|
|
/* Never return reserved bit set */
|
|
return change & ~GTK_CSS_CHANGE_RESERVED_BIT;
|
|
}
|
|
|
|
#ifdef PRINT_TREE
|
|
static void
|
|
_gtk_css_selector_tree_print (const GtkCssSelectorTree *tree, GString *str, char *prefix)
|
|
{
|
|
gboolean first = TRUE;
|
|
int len, i;
|
|
|
|
for (; tree != NULL; tree = gtk_css_selector_tree_get_sibling (tree), first = FALSE)
|
|
{
|
|
if (!first)
|
|
g_string_append (str, prefix);
|
|
|
|
if (first)
|
|
{
|
|
if (gtk_css_selector_tree_get_sibling (tree))
|
|
g_string_append (str, "─┬─");
|
|
else
|
|
g_string_append (str, "───");
|
|
}
|
|
else
|
|
{
|
|
if (gtk_css_selector_tree_get_sibling (tree))
|
|
g_string_append (str, " ├─");
|
|
else
|
|
g_string_append (str, " └─");
|
|
}
|
|
|
|
len = str->len;
|
|
tree->selector.class->print (&tree->selector, str);
|
|
len = str->len - len;
|
|
|
|
if (gtk_css_selector_tree_get_previous (tree))
|
|
{
|
|
GString *prefix2 = g_string_new (prefix);
|
|
|
|
if (gtk_css_selector_tree_get_sibling (tree))
|
|
g_string_append (prefix2, " │ ");
|
|
else
|
|
g_string_append (prefix2, " ");
|
|
for (i = 0; i < len; i++)
|
|
g_string_append_c (prefix2, ' ');
|
|
|
|
_gtk_css_selector_tree_print (gtk_css_selector_tree_get_previous (tree), str, prefix2->str);
|
|
g_string_free (prefix2, TRUE);
|
|
}
|
|
else
|
|
g_string_append (str, "\n");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void
|
|
_gtk_css_selector_tree_match_print (const GtkCssSelectorTree *tree,
|
|
GString *str)
|
|
{
|
|
const GtkCssSelectorTree *iter;
|
|
|
|
g_return_if_fail (tree != NULL);
|
|
|
|
/* print name and * selector before others */
|
|
for (iter = tree;
|
|
iter && iter->selector.class->is_simple;
|
|
iter = gtk_css_selector_tree_get_parent (iter))
|
|
{
|
|
if (iter->selector.class == >K_CSS_SELECTOR_NAME ||
|
|
iter->selector.class == >K_CSS_SELECTOR_ANY)
|
|
{
|
|
iter->selector.class->print (&iter->selector, str);
|
|
}
|
|
}
|
|
/* now print other simple selectors */
|
|
for (iter = tree;
|
|
iter && iter->selector.class->is_simple;
|
|
iter = gtk_css_selector_tree_get_parent (iter))
|
|
{
|
|
if (iter->selector.class != >K_CSS_SELECTOR_NAME &&
|
|
iter->selector.class != >K_CSS_SELECTOR_ANY)
|
|
{
|
|
iter->selector.class->print (&iter->selector, str);
|
|
}
|
|
}
|
|
|
|
/* now if there's a combinator, print that one */
|
|
if (iter != NULL)
|
|
{
|
|
iter->selector.class->print (&iter->selector, str);
|
|
tree = gtk_css_selector_tree_get_parent (iter);
|
|
if (tree)
|
|
_gtk_css_selector_tree_match_print (tree, str);
|
|
}
|
|
}
|
|
|
|
void
|
|
_gtk_css_selector_tree_free (GtkCssSelectorTree *tree)
|
|
{
|
|
if (tree == NULL)
|
|
return;
|
|
|
|
g_free (tree);
|
|
}
|
|
|
|
|
|
typedef struct {
|
|
gpointer match;
|
|
GtkCssSelector *current_selector;
|
|
GtkCssSelectorTree **selector_match;
|
|
} GtkCssSelectorRuleSetInfo;
|
|
|
|
static GtkCssSelectorTree *
|
|
get_tree (GByteArray *array, gint32 offset)
|
|
{
|
|
return (GtkCssSelectorTree *) (array->data + offset);
|
|
}
|
|
|
|
static GtkCssSelectorTree *
|
|
alloc_tree (GByteArray *array, gint32 *offset)
|
|
{
|
|
GtkCssSelectorTree tree = { { NULL} };
|
|
|
|
*offset = array->len;
|
|
g_byte_array_append (array, (guint8 *)&tree, sizeof (GtkCssSelectorTree));
|
|
return get_tree (array, *offset);
|
|
}
|
|
|
|
static gint32
|
|
subdivide_infos (GByteArray *array, GList *infos, gint32 parent_offset)
|
|
{
|
|
GHashTable *ht;
|
|
GList *l;
|
|
GList *matched;
|
|
GList *remaining;
|
|
gint32 tree_offset;
|
|
GtkCssSelectorTree *tree;
|
|
GtkCssSelectorRuleSetInfo *info;
|
|
GtkCssSelector max_selector;
|
|
GHashTableIter iter;
|
|
guint max_count;
|
|
gpointer key, value;
|
|
GPtrArray *exact_matches;
|
|
gint32 res;
|
|
|
|
if (infos == NULL)
|
|
return GTK_CSS_SELECTOR_TREE_EMPTY_OFFSET;
|
|
|
|
ht = gtk_css_selectors_count_initial_init ();
|
|
|
|
for (l = infos; l != NULL; l = l->next)
|
|
{
|
|
info = l->data;
|
|
gtk_css_selectors_count_initial (info->current_selector, ht);
|
|
}
|
|
|
|
/* Pick the selector with highest count, and use as decision on this level
|
|
as that makes it possible to skip the largest amount of checks later */
|
|
|
|
max_count = 0;
|
|
|
|
g_hash_table_iter_init (&iter, ht);
|
|
while (g_hash_table_iter_next (&iter, &key, &value))
|
|
{
|
|
GtkCssSelector *selector = key;
|
|
if (GPOINTER_TO_UINT (value) > max_count ||
|
|
(GPOINTER_TO_UINT (value) == max_count &&
|
|
gtk_css_selector_compare_one (selector, &max_selector) < 0))
|
|
{
|
|
max_count = GPOINTER_TO_UINT (value);
|
|
max_selector = *selector;
|
|
}
|
|
}
|
|
|
|
matched = NULL;
|
|
remaining = NULL;
|
|
|
|
tree = alloc_tree (array, &tree_offset);
|
|
tree->parent_offset = parent_offset;
|
|
tree->selector = max_selector;
|
|
|
|
exact_matches = NULL;
|
|
for (l = infos; l != NULL; l = l->next)
|
|
{
|
|
info = l->data;
|
|
|
|
if (gtk_css_selectors_has_initial_selector (info->current_selector, &max_selector))
|
|
{
|
|
info->current_selector = gtk_css_selectors_skip_initial_selector (info->current_selector, &max_selector);
|
|
if (info->current_selector == NULL)
|
|
{
|
|
/* Matches current node */
|
|
if (exact_matches == NULL)
|
|
exact_matches = g_ptr_array_new ();
|
|
g_ptr_array_add (exact_matches, info->match);
|
|
if (info->selector_match != NULL)
|
|
*info->selector_match = GUINT_TO_POINTER (tree_offset);
|
|
}
|
|
else
|
|
matched = g_list_prepend (matched, info);
|
|
}
|
|
else
|
|
{
|
|
remaining = g_list_prepend (remaining, info);
|
|
}
|
|
}
|
|
|
|
if (exact_matches)
|
|
{
|
|
g_ptr_array_add (exact_matches, NULL); /* Null terminate */
|
|
res = array->len;
|
|
g_byte_array_append (array, (guint8 *)exact_matches->pdata,
|
|
exact_matches->len * sizeof (gpointer));
|
|
g_ptr_array_free (exact_matches, TRUE);
|
|
}
|
|
else
|
|
res = GTK_CSS_SELECTOR_TREE_EMPTY_OFFSET;
|
|
get_tree (array, tree_offset)->matches_offset = res;
|
|
|
|
res = subdivide_infos (array, matched, tree_offset);
|
|
get_tree (array, tree_offset)->previous_offset = res;
|
|
|
|
res = subdivide_infos (array, remaining, parent_offset);
|
|
get_tree (array, tree_offset)->sibling_offset = res;
|
|
|
|
g_list_free (matched);
|
|
g_list_free (remaining);
|
|
g_hash_table_unref (ht);
|
|
|
|
return tree_offset;
|
|
}
|
|
|
|
struct _GtkCssSelectorTreeBuilder {
|
|
GList *infos;
|
|
};
|
|
|
|
GtkCssSelectorTreeBuilder *
|
|
_gtk_css_selector_tree_builder_new (void)
|
|
{
|
|
return g_new0 (GtkCssSelectorTreeBuilder, 1);
|
|
}
|
|
|
|
void
|
|
_gtk_css_selector_tree_builder_free (GtkCssSelectorTreeBuilder *builder)
|
|
{
|
|
g_list_free_full (builder->infos, g_free);
|
|
g_free (builder);
|
|
}
|
|
|
|
void
|
|
_gtk_css_selector_tree_builder_add (GtkCssSelectorTreeBuilder *builder,
|
|
GtkCssSelector *selectors,
|
|
GtkCssSelectorTree **selector_match,
|
|
gpointer match)
|
|
{
|
|
GtkCssSelectorRuleSetInfo *info = g_new0 (GtkCssSelectorRuleSetInfo, 1);
|
|
|
|
info->match = match;
|
|
info->current_selector = selectors;
|
|
info->selector_match = selector_match;
|
|
builder->infos = g_list_prepend (builder->infos, info);
|
|
}
|
|
|
|
/* Convert all offsets to node-relative */
|
|
static void
|
|
fixup_offsets (GtkCssSelectorTree *tree, guint8 *data)
|
|
{
|
|
while (tree != NULL)
|
|
{
|
|
if (tree->parent_offset != GTK_CSS_SELECTOR_TREE_EMPTY_OFFSET)
|
|
tree->parent_offset -= ((guint8 *)tree - data);
|
|
|
|
if (tree->previous_offset != GTK_CSS_SELECTOR_TREE_EMPTY_OFFSET)
|
|
tree->previous_offset -= ((guint8 *)tree - data);
|
|
|
|
if (tree->sibling_offset != GTK_CSS_SELECTOR_TREE_EMPTY_OFFSET)
|
|
tree->sibling_offset -= ((guint8 *)tree - data);
|
|
|
|
if (tree->matches_offset != GTK_CSS_SELECTOR_TREE_EMPTY_OFFSET)
|
|
tree->matches_offset -= ((guint8 *)tree - data);
|
|
|
|
fixup_offsets ((GtkCssSelectorTree *)gtk_css_selector_tree_get_previous (tree), data);
|
|
|
|
tree = (GtkCssSelectorTree *)gtk_css_selector_tree_get_sibling (tree);
|
|
}
|
|
}
|
|
|
|
GtkCssSelectorTree *
|
|
_gtk_css_selector_tree_builder_build (GtkCssSelectorTreeBuilder *builder)
|
|
{
|
|
GtkCssSelectorTree *tree;
|
|
GByteArray *array;
|
|
guint8 *data;
|
|
guint len;
|
|
GList *l;
|
|
GtkCssSelectorRuleSetInfo *info;
|
|
|
|
array = g_byte_array_new ();
|
|
subdivide_infos (array, builder->infos, GTK_CSS_SELECTOR_TREE_EMPTY_OFFSET);
|
|
|
|
len = array->len;
|
|
data = g_byte_array_free (array, FALSE);
|
|
|
|
/* shrink to final size */
|
|
data = g_realloc (data, len);
|
|
|
|
tree = (GtkCssSelectorTree *)data;
|
|
|
|
fixup_offsets (tree, data);
|
|
|
|
/* Convert offsets to final pointers */
|
|
for (l = builder->infos; l != NULL; l = l->next)
|
|
{
|
|
info = l->data;
|
|
if (info->selector_match)
|
|
*info->selector_match = (GtkCssSelectorTree *)(data + GPOINTER_TO_UINT (*info->selector_match));
|
|
}
|
|
|
|
#ifdef PRINT_TREE
|
|
{
|
|
GString *s = g_string_new ("");
|
|
_gtk_css_selector_tree_print (tree, s, "");
|
|
g_print ("%s", s->str);
|
|
g_string_free (s, TRUE);
|
|
}
|
|
#endif
|
|
|
|
return tree;
|
|
}
|