mirror of
https://gitlab.gnome.org/GNOME/gtk.git
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402 lines
12 KiB
C
402 lines
12 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 "gtkcssarrayvalueprivate.h"
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#include "gtkcssimagevalueprivate.h"
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#include "gtkcssstylepropertyprivate.h"
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#include <string.h>
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struct _GtkCssValue {
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GTK_CSS_VALUE_BASE
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guint n_values;
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GtkCssValue *values[1];
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};
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static void
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gtk_css_value_array_free (GtkCssValue *value)
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{
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guint i;
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for (i = 0; i < value->n_values; i++)
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{
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_gtk_css_value_unref (value->values[i]);
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}
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g_slice_free1 (sizeof (GtkCssValue) + sizeof (GtkCssValue *) * (value->n_values - 1), value);
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}
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static GtkCssValue *
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gtk_css_value_array_compute (GtkCssValue *value,
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guint property_id,
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GtkStyleProviderPrivate *provider,
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GtkCssStyle *style,
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GtkCssStyle *parent_style)
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{
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GtkCssValue *result;
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GtkCssValue *i_value;
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guint i, j;
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result = NULL;
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for (i = 0; i < value->n_values; i++)
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{
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i_value = _gtk_css_value_compute (value->values[i], property_id, provider, style, parent_style);
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if (result == NULL &&
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i_value != value->values[i])
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{
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result = _gtk_css_array_value_new_from_array (value->values, value->n_values);
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for (j = 0; j < i; j++)
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_gtk_css_value_ref (result->values[j]);
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}
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if (result != NULL)
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result->values[i] = i_value;
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else
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_gtk_css_value_unref (i_value);
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}
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if (result == NULL)
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return _gtk_css_value_ref (value);
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return result;
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}
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static gboolean
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gtk_css_value_array_equal (const GtkCssValue *value1,
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const GtkCssValue *value2)
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{
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guint i;
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if (value1->n_values != value2->n_values)
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return FALSE;
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for (i = 0; i < value1->n_values; i++)
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{
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if (!_gtk_css_value_equal (value1->values[i],
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value2->values[i]))
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return FALSE;
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}
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return TRUE;
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}
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static guint
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gcd (guint a, guint b)
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{
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while (b != 0)
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{
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guint t = b;
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b = a % b;
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a = t;
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}
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return a;
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}
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static guint
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lcm (guint a, guint b)
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{
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return a / gcd (a, b) * b;
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}
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static GtkCssValue *
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gtk_css_value_array_transition_repeat (GtkCssValue *start,
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GtkCssValue *end,
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guint property_id,
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double progress)
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{
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GtkCssValue **transitions;
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guint i, n;
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n = lcm (start->n_values, end->n_values);
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transitions = g_newa (GtkCssValue *, n);
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for (i = 0; i < n; i++)
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{
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transitions[i] = _gtk_css_value_transition (start->values[i % start->n_values],
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end->values[i % end->n_values],
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property_id,
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progress);
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if (transitions[i] == NULL)
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{
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while (i--)
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_gtk_css_value_unref (transitions[i]);
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return NULL;
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}
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}
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return _gtk_css_array_value_new_from_array (transitions, n);
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}
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static GtkCssValue *
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gtk_css_array_value_create_default_transition_value (guint property_id)
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{
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switch (property_id)
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{
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case GTK_CSS_PROPERTY_BACKGROUND_IMAGE:
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return _gtk_css_image_value_new (NULL);
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default:
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g_return_val_if_reached (NULL);
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}
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}
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static GtkCssValue *
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gtk_css_value_array_transition_extend (GtkCssValue *start,
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GtkCssValue *end,
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guint property_id,
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double progress)
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{
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GtkCssValue **transitions;
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guint i, n;
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n = MAX (start->n_values, end->n_values);
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transitions = g_newa (GtkCssValue *, n);
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for (i = 0; i < MIN (start->n_values, end->n_values); i++)
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{
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transitions[i] = _gtk_css_value_transition (start->values[i],
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end->values[i],
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property_id,
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progress);
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if (transitions[i] == NULL)
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{
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while (i--)
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_gtk_css_value_unref (transitions[i]);
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return NULL;
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}
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}
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if (start->n_values != end->n_values)
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{
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GtkCssValue *default_value;
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default_value = gtk_css_array_value_create_default_transition_value (property_id);
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for (; i < start->n_values; i++)
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{
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transitions[i] = _gtk_css_value_transition (start->values[i],
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default_value,
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property_id,
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progress);
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if (transitions[i] == NULL)
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{
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while (i--)
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_gtk_css_value_unref (transitions[i]);
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return NULL;
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}
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}
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for (; i < end->n_values; i++)
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{
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transitions[i] = _gtk_css_value_transition (default_value,
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end->values[i],
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property_id,
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progress);
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if (transitions[i] == NULL)
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{
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while (i--)
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_gtk_css_value_unref (transitions[i]);
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return NULL;
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}
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}
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}
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g_assert (i == n);
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return _gtk_css_array_value_new_from_array (transitions, n);
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}
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static GtkCssValue *
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gtk_css_value_array_transition (GtkCssValue *start,
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GtkCssValue *end,
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guint property_id,
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double progress)
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{
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switch (property_id)
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{
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case GTK_CSS_PROPERTY_BACKGROUND_CLIP:
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case GTK_CSS_PROPERTY_BACKGROUND_ORIGIN:
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case GTK_CSS_PROPERTY_BACKGROUND_SIZE:
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case GTK_CSS_PROPERTY_BACKGROUND_POSITION:
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case GTK_CSS_PROPERTY_BACKGROUND_REPEAT:
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return gtk_css_value_array_transition_repeat (start, end, property_id, progress);
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case GTK_CSS_PROPERTY_BACKGROUND_IMAGE:
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return gtk_css_value_array_transition_extend (start, end, property_id, progress);
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case GTK_CSS_PROPERTY_COLOR:
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case GTK_CSS_PROPERTY_FONT_SIZE:
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case GTK_CSS_PROPERTY_BACKGROUND_COLOR:
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case GTK_CSS_PROPERTY_FONT_FAMILY:
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case GTK_CSS_PROPERTY_FONT_STYLE:
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case GTK_CSS_PROPERTY_FONT_VARIANT:
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case GTK_CSS_PROPERTY_FONT_WEIGHT:
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case GTK_CSS_PROPERTY_TEXT_SHADOW:
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case GTK_CSS_PROPERTY_ICON_SHADOW:
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case GTK_CSS_PROPERTY_BOX_SHADOW:
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case GTK_CSS_PROPERTY_MARGIN_TOP:
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case GTK_CSS_PROPERTY_MARGIN_LEFT:
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case GTK_CSS_PROPERTY_MARGIN_BOTTOM:
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case GTK_CSS_PROPERTY_MARGIN_RIGHT:
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case GTK_CSS_PROPERTY_PADDING_TOP:
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case GTK_CSS_PROPERTY_PADDING_LEFT:
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case GTK_CSS_PROPERTY_PADDING_BOTTOM:
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case GTK_CSS_PROPERTY_PADDING_RIGHT:
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case GTK_CSS_PROPERTY_BORDER_TOP_STYLE:
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case GTK_CSS_PROPERTY_BORDER_TOP_WIDTH:
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case GTK_CSS_PROPERTY_BORDER_LEFT_STYLE:
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case GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH:
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case GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE:
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case GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH:
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case GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE:
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case GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH:
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case GTK_CSS_PROPERTY_BORDER_TOP_LEFT_RADIUS:
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case GTK_CSS_PROPERTY_BORDER_TOP_RIGHT_RADIUS:
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case GTK_CSS_PROPERTY_BORDER_BOTTOM_RIGHT_RADIUS:
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case GTK_CSS_PROPERTY_BORDER_BOTTOM_LEFT_RADIUS:
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case GTK_CSS_PROPERTY_OUTLINE_STYLE:
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case GTK_CSS_PROPERTY_OUTLINE_WIDTH:
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case GTK_CSS_PROPERTY_OUTLINE_OFFSET:
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case GTK_CSS_PROPERTY_OUTLINE_TOP_LEFT_RADIUS:
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case GTK_CSS_PROPERTY_OUTLINE_TOP_RIGHT_RADIUS:
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case GTK_CSS_PROPERTY_OUTLINE_BOTTOM_RIGHT_RADIUS:
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case GTK_CSS_PROPERTY_OUTLINE_BOTTOM_LEFT_RADIUS:
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case GTK_CSS_PROPERTY_BORDER_TOP_COLOR:
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case GTK_CSS_PROPERTY_BORDER_RIGHT_COLOR:
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case GTK_CSS_PROPERTY_BORDER_BOTTOM_COLOR:
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case GTK_CSS_PROPERTY_BORDER_LEFT_COLOR:
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case GTK_CSS_PROPERTY_OUTLINE_COLOR:
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case GTK_CSS_PROPERTY_BORDER_IMAGE_SOURCE:
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case GTK_CSS_PROPERTY_BORDER_IMAGE_REPEAT:
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case GTK_CSS_PROPERTY_BORDER_IMAGE_SLICE:
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case GTK_CSS_PROPERTY_BORDER_IMAGE_WIDTH:
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case GTK_CSS_PROPERTY_ENGINE:
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default:
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/* keep all values that are not arrays here, so we get a warning if we ever turn them
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* into arrays and start animating them. */
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g_warning ("Don't know how to transition arrays for property '%s'",
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_gtk_style_property_get_name (GTK_STYLE_PROPERTY (_gtk_css_style_property_lookup_by_id (property_id))));
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case GTK_CSS_PROPERTY_TRANSITION_PROPERTY:
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case GTK_CSS_PROPERTY_TRANSITION_DURATION:
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case GTK_CSS_PROPERTY_TRANSITION_TIMING_FUNCTION:
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case GTK_CSS_PROPERTY_TRANSITION_DELAY:
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case GTK_CSS_PROPERTY_GTK_KEY_BINDINGS:
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return NULL;
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}
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}
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static void
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gtk_css_value_array_print (const GtkCssValue *value,
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GString *string)
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{
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guint i;
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if (value->n_values == 0)
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{
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g_string_append (string, "none");
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return;
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}
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for (i = 0; i < value->n_values; i++)
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{
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if (i > 0)
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g_string_append (string, ", ");
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_gtk_css_value_print (value->values[i], string);
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}
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}
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static const GtkCssValueClass GTK_CSS_VALUE_ARRAY = {
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gtk_css_value_array_free,
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gtk_css_value_array_compute,
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gtk_css_value_array_equal,
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gtk_css_value_array_transition,
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gtk_css_value_array_print
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};
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GtkCssValue *
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_gtk_css_array_value_new (GtkCssValue *content)
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{
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g_return_val_if_fail (content != NULL, NULL);
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return _gtk_css_array_value_new_from_array (&content, 1);
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}
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GtkCssValue *
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_gtk_css_array_value_new_from_array (GtkCssValue **values,
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guint n_values)
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{
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GtkCssValue *result;
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g_return_val_if_fail (values != NULL, NULL);
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g_return_val_if_fail (n_values > 0, NULL);
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result = _gtk_css_value_alloc (>K_CSS_VALUE_ARRAY, sizeof (GtkCssValue) + sizeof (GtkCssValue *) * (n_values - 1));
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result->n_values = n_values;
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memcpy (&result->values[0], values, sizeof (GtkCssValue *) * n_values);
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return result;
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}
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GtkCssValue *
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_gtk_css_array_value_parse (GtkCssParser *parser,
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GtkCssValue *(* parse_func) (GtkCssParser *parser))
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{
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GtkCssValue *value, *result;
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GPtrArray *values;
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values = g_ptr_array_new ();
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do {
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value = parse_func (parser);
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if (value == NULL)
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{
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g_ptr_array_set_free_func (values, (GDestroyNotify) _gtk_css_value_unref);
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g_ptr_array_free (values, TRUE);
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return NULL;
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}
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g_ptr_array_add (values, value);
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} while (_gtk_css_parser_try (parser, ",", TRUE));
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result = _gtk_css_array_value_new_from_array ((GtkCssValue **) values->pdata, values->len);
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g_ptr_array_free (values, TRUE);
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return result;
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}
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GtkCssValue *
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_gtk_css_array_value_get_nth (const GtkCssValue *value,
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guint i)
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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 (value->class == >K_CSS_VALUE_ARRAY, NULL);
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g_return_val_if_fail (value->n_values > 0, NULL);
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return value->values[i % value->n_values];
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}
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guint
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_gtk_css_array_value_get_n_values (const GtkCssValue *value)
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{
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g_return_val_if_fail (value != NULL, 0);
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g_return_val_if_fail (value->class == >K_CSS_VALUE_ARRAY, 0);
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return value->n_values;
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}
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