9b953829fb
This commit is essentially a large reorganization. Instead of all value subtypes having their own compute function, there is the general _gtk_css_value_compute() function that then calls a vfunc on the subtype.
136 lines
3.1 KiB
C
136 lines
3.1 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2011 Red Hat, Inc.
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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 "gtkcssvalueprivate.h"
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struct _GtkCssValue {
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GTK_CSS_VALUE_BASE
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};
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G_DEFINE_BOXED_TYPE (GtkCssValue, _gtk_css_value, _gtk_css_value_ref, _gtk_css_value_unref)
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GtkCssValue *
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_gtk_css_value_alloc (const GtkCssValueClass *klass,
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gsize size)
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{
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GtkCssValue *value;
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value = g_slice_alloc0 (size);
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value->class = klass;
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value->ref_count = 1;
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return value;
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}
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GtkCssValue *
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_gtk_css_value_ref (GtkCssValue *value)
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{
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g_return_val_if_fail (value != NULL, NULL);
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g_atomic_int_add (&value->ref_count, 1);
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return value;
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}
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void
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_gtk_css_value_unref (GtkCssValue *value)
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{
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if (value == NULL)
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return;
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if (!g_atomic_int_dec_and_test (&value->ref_count))
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return;
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value->class->free (value);
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}
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GtkCssValue *
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_gtk_css_value_compute (GtkCssValue *value,
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GtkStyleContext *context)
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{
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g_return_val_if_fail (value != NULL, NULL);
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g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
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return value->class->compute (value, context);
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}
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gboolean
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_gtk_css_value_equal (const GtkCssValue *value1,
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const GtkCssValue *value2)
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{
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g_return_val_if_fail (value1 != NULL, FALSE);
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g_return_val_if_fail (value2 != NULL, FALSE);
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if (value1->class != value2->class)
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return FALSE;
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return value1->class->equal (value1, value2);
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}
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gboolean
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_gtk_css_value_equal0 (const GtkCssValue *value1,
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const GtkCssValue *value2)
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{
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if (value1 == NULL && value2 == NULL)
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return TRUE;
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if (value1 == NULL || value2 == NULL)
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return FALSE;
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return _gtk_css_value_equal (value1, value2);
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}
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GtkCssValue *
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_gtk_css_value_transition (GtkCssValue *start,
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GtkCssValue *end,
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double progress)
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{
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g_return_val_if_fail (start != NULL, FALSE);
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g_return_val_if_fail (end != NULL, FALSE);
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if (start->class != end->class)
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return NULL;
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return start->class->transition (start, end, progress);
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}
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char *
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_gtk_css_value_to_string (const GtkCssValue *value)
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{
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GString *string;
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g_return_val_if_fail (value != NULL, NULL);
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string = g_string_new (NULL);
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_gtk_css_value_print (value, string);
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return g_string_free (string, FALSE);
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}
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void
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_gtk_css_value_print (const GtkCssValue *value,
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GString *string)
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{
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g_return_if_fail (value != NULL);
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g_return_if_fail (string != NULL);
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value->class->print (value, string);
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}
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