#include <string.h>
#include "gtkcssimageurlprivate.h"
-
-#include "gtkcssprovider.h"
+#include "gtkcssimagesurfaceprivate.h"
G_DEFINE_TYPE (GtkCssImageUrl, _gtk_css_image_url, GTK_TYPE_CSS_IMAGE)
+static GtkCssImage *
+gtk_css_image_url_load_image (GtkCssImageUrl *url)
+{
+ GdkPixbuf *pixbuf;
+ GError *error = NULL;
+ GFileInputStream *input;
+
+ if (url->loaded_image)
+ return url->loaded_image;
+
+ /* We special case resources here so we can use
+ gdk_pixbuf_new_from_resource, which in turn has some special casing
+ for GdkPixdata files to avoid duplicating the memory for the pixbufs */
+ if (g_file_has_uri_scheme (url->file, "resource"))
+ {
+ char *uri = g_file_get_uri (url->file);
+ char *resource_path = g_uri_unescape_string (uri + strlen ("resource://"), NULL);
+
+ pixbuf = gdk_pixbuf_new_from_resource (resource_path, &error);
+ g_free (resource_path);
+ g_free (uri);
+ }
+ else
+ {
+ input = g_file_read (url->file, NULL, &error);
+ if (input != NULL)
+ {
+ pixbuf = gdk_pixbuf_new_from_stream (G_INPUT_STREAM (input), NULL, &error);
+ g_object_unref (input);
+ }
+ else
+ {
+ pixbuf = NULL;
+ }
+ }
+
+ if (pixbuf == NULL)
+ {
+ cairo_surface_t *empty = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 0, 0);
+
+ /* XXX: Can we get the error somehow sent to the CssProvider?
+ * I don't like just dumping it to stderr or losing it completely. */
+ g_warning ("Error loading image: %s", error->message);
+ g_error_free (error);
+ url->loaded_image = _gtk_css_image_surface_new (empty);
+ cairo_surface_destroy (empty);
+ return url->loaded_image;
+ }
+
+ url->loaded_image = _gtk_css_image_surface_new_for_pixbuf (pixbuf);
+ g_object_unref (pixbuf);
+
+ return url->loaded_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);
+ return _gtk_css_image_get_width (gtk_css_image_url_load_image (url));
}
static int
{
GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
- return cairo_image_surface_get_height (url->surface);
+ return _gtk_css_image_get_height (gtk_css_image_url_load_image (url));
+}
+
+static double
+gtk_css_image_url_get_aspect_ratio (GtkCssImage *image)
+{
+ GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
+
+ return _gtk_css_image_get_aspect_ratio (gtk_css_image_url_load_image (url));
}
static void
{
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);
+ _gtk_css_image_draw (gtk_css_image_url_load_image (url), cr, width, height);
+}
+
+static GtkCssImage *
+gtk_css_image_url_compute (GtkCssImage *image,
+ guint property_id,
+ GtkStyleProviderPrivate *provider,
+ GtkCssComputedValues *values,
+ GtkCssComputedValues *parent_values,
+ GtkCssDependencies *dependencies)
+{
+ GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
+
+ return g_object_ref (gtk_css_image_url_load_image (url));
}
static gboolean
GtkCssParser *parser)
{
GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
- GdkPixbuf *pixbuf;
- GFile *file;
- cairo_t *cr;
- GError *error = NULL;
- GFileInputStream *input;
- file = _gtk_css_parser_read_url (parser);
- if (file == NULL)
+ url->file = _gtk_css_parser_read_url (parser);
+ if (url->file == NULL)
return FALSE;
- /* We special case resources here so we can use
- gdk_pixbuf_new_from_resource, which in turn has some special casing
- for GdkPixdata files to avoid duplicating the memory for the pixbufs */
- if (g_file_has_uri_scheme (file, "resource"))
- {
- char *uri = g_file_get_uri (file);
- char *resource_path = g_uri_unescape_string (uri + strlen ("resource://"), NULL);
-
- pixbuf = gdk_pixbuf_new_from_resource (resource_path, &error);
- g_free (resource_path);
- g_free (uri);
- }
- else
- {
- input = g_file_read (file, NULL, &error);
- if (input == NULL)
- {
- _gtk_css_parser_take_error (parser, error);
- return FALSE;
- }
-
- pixbuf = gdk_pixbuf_new_from_stream (G_INPUT_STREAM (input), NULL, &error);
- g_object_unref (input);
- }
- g_object_unref (file);
-
- 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);
- cairo_destroy (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
+
+ _gtk_css_image_print (gtk_css_image_url_load_image (url), string);
}
static void
{
GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (object);
- if (url->surface)
- {
- cairo_surface_destroy (url->surface);
- url->surface = NULL;
- }
+ g_clear_object (&url->file);
+ g_clear_object (&url->loaded_image);
G_OBJECT_CLASS (_gtk_css_image_url_parent_class)->dispose (object);
}
image_class->get_width = gtk_css_image_url_get_width;
image_class->get_height = gtk_css_image_url_get_height;
+ image_class->get_aspect_ratio = gtk_css_image_url_get_aspect_ratio;
+ image_class->compute = gtk_css_image_url_compute;
image_class->draw = gtk_css_image_url_draw;
image_class->parse = gtk_css_image_url_parse;
image_class->print = gtk_css_image_url_print;
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