2016-01-30 01:23:27 +00:00
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/*
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* Copyright © 2016 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 2.1 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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* Authors: Matthias Clasen <mclasen@redhat.com>
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*/
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#include "config.h"
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#include "gtkcssimagefallbackprivate.h"
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#include "gtkcsscolorvalueprivate.h"
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2020-01-10 12:02:33 +00:00
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#include "gtkcsscolorvalueprivate.h"
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2016-01-30 01:23:27 +00:00
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#include "gtkstyleproviderprivate.h"
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G_DEFINE_TYPE (GtkCssImageFallback, _gtk_css_image_fallback, GTK_TYPE_CSS_IMAGE)
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static int
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gtk_css_image_fallback_get_width (GtkCssImage *image)
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{
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GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
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if (fallback->used < 0)
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return 0;
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return _gtk_css_image_get_width (fallback->images[fallback->used]);
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}
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static int
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gtk_css_image_fallback_get_height (GtkCssImage *image)
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{
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GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
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if (fallback->used < 0)
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return 0;
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return _gtk_css_image_get_height (fallback->images[fallback->used]);
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}
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static double
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gtk_css_image_fallback_get_aspect_ratio (GtkCssImage *image)
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{
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GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
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if (fallback->used < 0)
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2017-01-13 00:43:07 +00:00
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return 0;
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2016-01-30 01:23:27 +00:00
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return _gtk_css_image_get_aspect_ratio (fallback->images[fallback->used]);
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}
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static void
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2016-12-13 04:12:41 +00:00
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gtk_css_image_fallback_snapshot (GtkCssImage *image,
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GtkSnapshot *snapshot,
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double width,
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double height)
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2016-01-30 01:23:27 +00:00
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{
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GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
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if (fallback->used < 0)
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{
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if (fallback->color)
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2020-01-16 12:41:55 +00:00
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{
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const GdkRGBA *color = gtk_css_color_value_get_rgba (fallback->color);
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if (!gdk_rgba_is_clear (color))
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gtk_snapshot_append_color (snapshot, color,
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&GRAPHENE_RECT_INIT (0, 0, width, height));
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}
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2016-01-30 01:23:27 +00:00
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else
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2020-01-16 12:41:55 +00:00
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{
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gtk_snapshot_append_color (snapshot, &(GdkRGBA) {1, 0, 0, 1},
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&GRAPHENE_RECT_INIT (0, 0, width, height));
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}
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2016-01-30 01:23:27 +00:00
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}
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else
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2016-12-13 04:12:41 +00:00
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gtk_css_image_snapshot (fallback->images[fallback->used], snapshot, width, height);
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2016-01-30 01:23:27 +00:00
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}
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static void
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gtk_css_image_fallback_print (GtkCssImage *image,
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2016-09-06 10:21:06 +00:00
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GString *string)
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2016-01-30 01:23:27 +00:00
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{
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GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
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int i;
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g_string_append (string, "image(");
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for (i = 0; i < fallback->n_images; 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_image_print (fallback->images[i], string);
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}
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if (fallback->color)
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{
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2016-04-26 04:01:59 +00:00
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if (fallback->n_images > 0)
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g_string_append (string, ",");
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2016-01-30 01:23:27 +00:00
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_gtk_css_value_print (fallback->color, string);
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}
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g_string_append (string, ")");
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}
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static void
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gtk_css_image_fallback_dispose (GObject *object)
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{
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GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (object);
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int i;
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for (i = 0; i < fallback->n_images; i++)
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g_object_unref (fallback->images[i]);
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g_free (fallback->images);
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fallback->images = NULL;
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if (fallback->color)
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{
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_gtk_css_value_unref (fallback->color);
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fallback->color = NULL;
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}
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G_OBJECT_CLASS (_gtk_css_image_fallback_parent_class)->dispose (object);
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}
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static GtkCssImage *
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2017-10-31 03:31:46 +00:00
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gtk_css_image_fallback_compute (GtkCssImage *image,
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guint property_id,
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GtkStyleProvider *provider,
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GtkCssStyle *style,
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GtkCssStyle *parent_style)
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2016-01-30 01:23:27 +00:00
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{
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GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
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GtkCssImageFallback *copy;
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int i;
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if (fallback->used < 0)
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{
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2020-01-11 07:25:52 +00:00
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GtkCssValue *computed_color = NULL;
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if (fallback->color)
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computed_color= _gtk_css_value_compute (fallback->color,
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2020-09-23 04:15:08 +00:00
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property_id,
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provider,
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style,
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parent_style);
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2020-01-11 07:25:52 +00:00
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/* image($color) that didn't change */
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if (computed_color && !fallback->images &&
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computed_color == fallback->color)
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return g_object_ref (image);
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2016-01-30 01:23:27 +00:00
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copy = g_object_new (_gtk_css_image_fallback_get_type (), NULL);
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copy->n_images = fallback->n_images;
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copy->images = g_new (GtkCssImage *, fallback->n_images);
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for (i = 0; i < fallback->n_images; i++)
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{
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copy->images[i] = _gtk_css_image_compute (fallback->images[i],
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property_id,
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provider,
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style,
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parent_style);
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2018-02-17 19:31:14 +00:00
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if (gtk_css_image_is_invalid (copy->images[i]))
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2016-01-30 01:23:27 +00:00
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continue;
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if (copy->used < 0)
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copy->used = i;
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}
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2020-01-11 07:25:52 +00:00
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copy->color = computed_color;
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2016-01-30 01:23:27 +00:00
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return GTK_CSS_IMAGE (copy);
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}
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else
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2017-12-08 22:48:47 +00:00
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return GTK_CSS_IMAGE (g_object_ref (fallback));
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2016-01-30 01:23:27 +00:00
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}
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2019-03-30 23:52:22 +00:00
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typedef struct
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2016-01-30 01:23:27 +00:00
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{
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2019-03-30 23:52:22 +00:00
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GtkCssValue *color;
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2016-01-30 01:23:27 +00:00
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GPtrArray *images;
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2019-03-30 23:52:22 +00:00
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} ParseData;
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static guint
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gtk_css_image_fallback_parse_arg (GtkCssParser *parser,
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guint arg,
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gpointer _data)
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{
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ParseData *data = _data;
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2016-01-30 01:23:27 +00:00
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2019-03-30 23:52:22 +00:00
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if (data->color != NULL)
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2016-01-30 01:23:27 +00:00
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{
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2019-04-09 03:40:50 +00:00
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gtk_css_parser_error_syntax (parser, "The color must be the last parameter");
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2019-03-30 23:52:22 +00:00
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return 0;
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2016-01-30 01:23:27 +00:00
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}
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2019-03-30 23:52:22 +00:00
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else if (_gtk_css_image_can_parse (parser))
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{
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GtkCssImage *image = _gtk_css_image_new_parse (parser);
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if (image == NULL)
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return 0;
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2016-01-30 01:23:27 +00:00
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2020-09-23 04:06:42 +00:00
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if (!data->images)
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data->images = g_ptr_array_new_with_free_func (g_object_unref);
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2019-03-30 23:52:22 +00:00
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g_ptr_array_add (data->images, image);
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return 1;
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}
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else
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2016-01-30 01:23:27 +00:00
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{
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2019-03-30 23:52:22 +00:00
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data->color = _gtk_css_color_value_parse (parser);
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if (data->color == NULL)
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return 0;
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return 1;
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2016-01-30 01:23:27 +00:00
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}
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2019-03-30 23:52:22 +00:00
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}
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2016-01-30 01:23:27 +00:00
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2019-03-30 23:52:22 +00:00
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static gboolean
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gtk_css_image_fallback_parse (GtkCssImage *image,
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GtkCssParser *parser)
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{
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GtkCssImageFallback *self = GTK_CSS_IMAGE_FALLBACK (image);
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ParseData data = { NULL, NULL };
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2016-01-30 01:23:27 +00:00
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2019-03-30 23:52:22 +00:00
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if (!gtk_css_parser_has_function (parser, "image"))
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2016-01-30 01:23:27 +00:00
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{
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2019-04-09 03:40:50 +00:00
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gtk_css_parser_error_syntax (parser, "Expected 'image('");
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2019-03-30 23:52:22 +00:00
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return FALSE;
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2016-01-30 01:23:27 +00:00
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}
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2019-03-30 23:52:22 +00:00
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if (!gtk_css_parser_consume_function (parser, 1, G_MAXUINT, gtk_css_image_fallback_parse_arg, &data))
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2016-01-30 01:23:27 +00:00
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{
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2019-03-30 23:52:22 +00:00
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g_clear_pointer (&data.color, _gtk_css_value_unref);
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2020-09-23 04:06:42 +00:00
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if (data.images)
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g_ptr_array_free (data.images, TRUE);
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2016-01-30 01:23:27 +00:00
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return FALSE;
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}
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2019-03-30 23:52:22 +00:00
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self->color = data.color;
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2020-09-23 04:06:42 +00:00
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if (data.images)
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{
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self->n_images = data.images->len;
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self->images = (GtkCssImage **) g_ptr_array_free (data.images, FALSE);
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}
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else
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{
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self->n_images = 0;
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self->images = NULL;
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}
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2016-01-30 01:23:27 +00:00
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return TRUE;
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}
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2017-10-14 10:00:19 +00:00
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static gboolean
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gtk_css_image_fallback_equal (GtkCssImage *image1,
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GtkCssImage *image2)
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{
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GtkCssImageFallback *fallback1 = GTK_CSS_IMAGE_FALLBACK (image1);
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GtkCssImageFallback *fallback2 = GTK_CSS_IMAGE_FALLBACK (image2);
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if (fallback1->used < 0)
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{
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if (fallback2->used >= 0)
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return FALSE;
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return _gtk_css_value_equal (fallback1->color, fallback2->color);
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}
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if (fallback2->used < 0)
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return FALSE;
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return _gtk_css_image_equal (fallback1->images[fallback1->used],
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fallback2->images[fallback2->used]);
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}
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2020-01-11 13:38:49 +00:00
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static gboolean
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gtk_css_image_fallback_is_computed (GtkCssImage *image)
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{
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GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
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if (fallback->used < 0)
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{
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guint i;
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if (fallback->color && !fallback->images)
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return gtk_css_value_is_computed (fallback->color);
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for (i = 0; i < fallback->n_images; i++)
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{
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if (!gtk_css_image_is_computed (fallback->images[i]))
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{
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return FALSE;
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}
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}
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}
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return TRUE;
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}
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2016-01-30 01:23:27 +00:00
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static void
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_gtk_css_image_fallback_class_init (GtkCssImageFallbackClass *klass)
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{
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GtkCssImageClass *image_class = GTK_CSS_IMAGE_CLASS (klass);
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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image_class->get_width = gtk_css_image_fallback_get_width;
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image_class->get_height = gtk_css_image_fallback_get_height;
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image_class->get_aspect_ratio = gtk_css_image_fallback_get_aspect_ratio;
|
2016-12-13 04:12:41 +00:00
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image_class->snapshot = gtk_css_image_fallback_snapshot;
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2016-01-30 01:23:27 +00:00
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image_class->parse = gtk_css_image_fallback_parse;
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image_class->compute = gtk_css_image_fallback_compute;
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image_class->print = gtk_css_image_fallback_print;
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2017-10-14 10:00:19 +00:00
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image_class->equal = gtk_css_image_fallback_equal;
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2020-01-11 13:38:49 +00:00
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image_class->is_computed = gtk_css_image_fallback_is_computed;
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2016-01-30 01:23:27 +00:00
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object_class->dispose = gtk_css_image_fallback_dispose;
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}
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static void
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_gtk_css_image_fallback_init (GtkCssImageFallback *image_fallback)
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|
{
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|
|
|
image_fallback->used = -1;
|
|
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|
}
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