diff options
| -rw-r--r-- | gtk/Makefile.am | 2 | ||||
| -rw-r--r-- | gtk/gtkcssimage.c | 5 | ||||
| -rw-r--r-- | gtk/gtkcssimageurl.c | 223 | ||||
| -rw-r--r-- | gtk/gtkcssimageurlprivate.h | 54 |
4 files changed, 283 insertions, 1 deletions
diff --git a/gtk/Makefile.am b/gtk/Makefile.am index 70b6f32e34..4d46a5ba89 100644 --- a/gtk/Makefile.am +++ b/gtk/Makefile.am @@ -413,6 +413,7 @@ gtk_private_h_sources = \ gtkcontainerprivate.h \ gtkcsscustompropertyprivate.h \ gtkcssimageprivate.h \ + gtkcssimageurlprivate.h \ gtkcsslookupprivate.h \ gtkcssparserprivate.h \ gtkcssproviderprivate.h \ @@ -591,6 +592,7 @@ gtk_base_c_sources = \ gtkcontainer.c \ gtkcsscustomproperty.c \ gtkcssimage.c \ + gtkcssimageurl.c \ gtkcsslookup.c \ gtkcssparser.c \ gtkcssprovider.c \ diff --git a/gtk/gtkcssimage.c b/gtk/gtkcssimage.c index 2aec9bb866..e46706cbf2 100644 --- a/gtk/gtkcssimage.c +++ b/gtk/gtkcssimage.c @@ -22,6 +22,9 @@ #include "gtkcssimageprivate.h" +/* for the types only */ +#include "gtk/gtkcssimageurlprivate.h" + G_DEFINE_ABSTRACT_TYPE (GtkCssImage, _gtk_css_image, G_TYPE_OBJECT) static int @@ -165,7 +168,7 @@ _gtk_css_image_new_parse (GtkCssParser *parser, g_return_val_if_fail (parser != NULL, NULL); g_return_val_if_fail (G_IS_FILE (base), NULL); - image = g_object_new (GTK_TYPE_CSS_IMAGE, NULL); + image = g_object_new (GTK_TYPE_CSS_IMAGE_URL, NULL); klass = GTK_CSS_IMAGE_GET_CLASS (image); if (!klass->parse (image, parser, base)) diff --git a/gtk/gtkcssimageurl.c b/gtk/gtkcssimageurl.c new file mode 100644 index 0000000000..cc0509f3fa --- /dev/null +++ b/gtk/gtkcssimageurl.c @@ -0,0 +1,223 @@ +/* + * Copyright © 2011 Red Hat Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + * Authors: Benjamin Otte <otte@gnome.org> + */ + +#include "config.h" + +#include "gtkcssimageurlprivate.h" + +#include "gtkcssprovider.h" + +G_DEFINE_TYPE (GtkCssImageUrl, _gtk_css_image_url, GTK_TYPE_CSS_IMAGE) + +static int +gtk_css_image_url_get_width (GtkCssImage *image) +{ + GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image); + + return cairo_image_surface_get_width (url->surface); +} + +static int +gtk_css_image_url_get_height (GtkCssImage *image) +{ + GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image); + + return cairo_image_surface_get_height (url->surface); +} + +static void +gtk_css_image_url_draw (GtkCssImage *image, + cairo_t *cr, + double width, + double height) +{ + GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image); + + cairo_rectangle (cr, 0, 0, width, height); + cairo_scale (cr, + width / cairo_image_surface_get_width (url->surface), + height / cairo_image_surface_get_height (url->surface)); + cairo_set_source_surface (cr, url->surface, 0, 0); + cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_PAD); + cairo_fill (cr); +} + +static GFile * +gtk_css_parse_url (GtkCssParser *parser, + GFile *base) +{ + gchar *path; + GFile *file; + + if (_gtk_css_parser_try (parser, "url", FALSE)) + { + if (!_gtk_css_parser_try (parser, "(", TRUE)) + { + _gtk_css_parser_skip_whitespace (parser); + if (_gtk_css_parser_try (parser, "(", TRUE)) + { + GError *error; + + error = g_error_new_literal (GTK_CSS_PROVIDER_ERROR, + GTK_CSS_PROVIDER_ERROR_DEPRECATED, + "Whitespace between 'url' and '(' is deprecated"); + + _gtk_css_parser_take_error (parser, error); + } + else + { + _gtk_css_parser_error (parser, "Expected '(' after 'url'"); + return NULL; + } + } + + path = _gtk_css_parser_read_string (parser); + if (path == NULL) + return NULL; + + if (!_gtk_css_parser_try (parser, ")", TRUE)) + { + _gtk_css_parser_error (parser, "No closing ')' found for 'url'"); + g_free (path); + return NULL; + } + } + else + { + path = _gtk_css_parser_try_name (parser, TRUE); + if (path == NULL) + { + _gtk_css_parser_error (parser, "Not a valid url"); + return NULL; + } + } + + file = g_file_resolve_relative_path (base, path); + g_free (path); + + return file; +} + +static gboolean +gtk_css_image_url_parse (GtkCssImage *image, + GtkCssParser *parser, + GFile *base) +{ + GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image); + GdkPixbuf *pixbuf; + GFile *file; + char *path; + cairo_t *cr; + GError *error = NULL; + + file = gtk_css_parse_url (parser, base); + if (file == NULL) + return FALSE; + + path = g_file_get_path (file); + g_object_unref (file); + + pixbuf = gdk_pixbuf_new_from_file (path, &error); + g_free (path); + if (pixbuf == NULL) + { + _gtk_css_parser_take_error (parser, error); + return FALSE; + } + + url->surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, + gdk_pixbuf_get_width (pixbuf), + gdk_pixbuf_get_height (pixbuf)); + cr = cairo_create (url->surface); + gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0); + cairo_paint (cr); + g_object_unref (pixbuf); + + return TRUE; +} + +static cairo_status_t +surface_write (void *closure, + const unsigned char *data, + unsigned int length) +{ + g_byte_array_append (closure, data, length); + + return CAIRO_STATUS_SUCCESS; +} + +static void +gtk_css_image_url_print (GtkCssImage *image, + GString *string) +{ +#if CAIRO_HAS_PNG_FUNCTIONS + GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image); + GByteArray *array; + char *base64; + + array = g_byte_array_new (); + cairo_surface_write_to_png_stream (url->surface, surface_write, array); + base64 = g_base64_encode (array->data, array->len); + g_byte_array_free (array, TRUE); + + g_string_append (string, "url(\"data:image/png;base64,"); + g_string_append (string, base64); + g_string_append (string, "\")"); + + g_free (base64); +#else + g_string_append (string, "none /* you need cairo png functions enabled to make this work */"); +#endif +} + +static void +gtk_css_image_url_dispose (GObject *object) +{ + GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (object); + + if (url->surface) + { + cairo_surface_destroy (url->surface); + url->surface = NULL; + } + + G_OBJECT_CLASS (_gtk_css_image_url_parent_class)->dispose (object); +} + +static void +_gtk_css_image_url_class_init (GtkCssImageUrlClass *klass) +{ + GtkCssImageClass *image_class = GTK_CSS_IMAGE_CLASS (klass); + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + image_class->get_width = gtk_css_image_url_get_width; + image_class->get_height = gtk_css_image_url_get_height; + image_class->draw = gtk_css_image_url_draw; + image_class->parse = gtk_css_image_url_parse; + image_class->print = gtk_css_image_url_print; + + object_class->dispose = gtk_css_image_url_dispose; +} + +static void +_gtk_css_image_url_init (GtkCssImageUrl *image_url) +{ +} + diff --git a/gtk/gtkcssimageurlprivate.h b/gtk/gtkcssimageurlprivate.h new file mode 100644 index 0000000000..39041db405 --- /dev/null +++ b/gtk/gtkcssimageurlprivate.h @@ -0,0 +1,54 @@ +/* + * Copyright © 2011 Red Hat Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + * Authors: Benjamin Otte <otte@gnome.org> + */ + +#ifndef __GTK_CSS_IMAGE_URL_PRIVATE_H__ +#define __GTK_CSS_IMAGE_URL_PRIVATE_H__ + +#include "gtk/gtkcssimageprivate.h" + +G_BEGIN_DECLS + +#define GTK_TYPE_CSS_IMAGE_URL (_gtk_css_image_url_get_type ()) +#define GTK_CSS_IMAGE_URL(obj) (G_TYPE_CHECK_INSTANCE_CAST (obj, GTK_TYPE_CSS_IMAGE_URL, GtkCssImageUrl)) +#define GTK_CSS_IMAGE_URL_CLASS(cls) (G_TYPE_CHECK_CLASS_CAST (cls, GTK_TYPE_CSS_IMAGE_URL, GtkCssImageUrlClass)) +#define GTK_IS_CSS_IMAGE_URL(obj) (G_TYPE_CHECK_INSTANCE_TYPE (obj, GTK_TYPE_CSS_IMAGE_URL)) +#define GTK_IS_CSS_IMAGE_URL_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE (obj, GTK_TYPE_CSS_IMAGE_URL)) +#define GTK_CSS_IMAGE_URL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CSS_IMAGE_URL, GtkCssImageUrlClass)) + +typedef struct _GtkCssImageUrl GtkCssImageUrl; +typedef struct _GtkCssImageUrlClass GtkCssImageUrlClass; + +struct _GtkCssImageUrl +{ + GtkCssImage parent; + + cairo_surface_t *surface; /* the surface we render - guaranteed to be an image surface */ +}; + +struct _GtkCssImageUrlClass +{ + GtkCssImageClass parent_class; +}; + +GType _gtk_css_image_url_get_type (void) G_GNUC_CONST; + +G_END_DECLS + +#endif /* __GTK_CSS_IMAGE_URL_PRIVATE_H__ */ |