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screenshot: Write metadata to png file

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Use GdkPixbuf rather then cairo_surface_write_to_png_stream when saving
screenshots because this allows us to embedded metadata into the file which
is used by the background control panel to filter out screenshots.

https://bugzilla.gnome.org/show_bug.cgi?id=693737
This commit is contained in:
Adel Gadllah 2013-02-14 18:22:24 +01:00
parent ad1b9b71ae
commit eb5a836822
1 changed files with 20 additions and 14 deletions
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34
src/shell-screenshot.c
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@ -164,19 +164,6 @@ prepare_write_stream (const gchar *filename,
return stream;
}
static cairo_status_t
do_write_to_stream (void *closure,
const guchar *data,
guint length)
{
GOutputStream *stream = closure;
gboolean res;
res = g_output_stream_write_all (stream, data, length, NULL, NULL, NULL);
return res ? CAIRO_STATUS_SUCCESS : CAIRO_STATUS_WRITE_ERROR;
}
static void
write_screenshot_thread (GSimpleAsyncResult *result,
GObject *object,
@ -194,7 +181,26 @@ write_screenshot_thread (GSimpleAsyncResult *result,
if (stream == NULL)
status = CAIRO_STATUS_FILE_NOT_FOUND;
else
status = cairo_surface_write_to_png_stream (screenshot_data->image, do_write_to_stream, stream);
{
GdkPixbuf *pixbuf;
pixbuf = gdk_pixbuf_new_from_data (cairo_image_surface_get_data (screenshot_data->image),
GDK_COLORSPACE_RGB,
TRUE,
8,
cairo_image_surface_get_width (screenshot_data->image),
cairo_image_surface_get_height (screenshot_data->image),
cairo_image_surface_get_stride (screenshot_data->image),
NULL,
NULL);
if (gdk_pixbuf_save_to_stream (pixbuf, stream, "png", NULL, NULL,
"tEXt::Software", "gnome-screenshot", NULL))
status = CAIRO_STATUS_SUCCESS;
else
status = CAIRO_STATUS_WRITE_ERROR;
g_clear_object (&pixbuf);
}
g_simple_async_result_set_op_res_gboolean (result, status == CAIRO_STATUS_SUCCESS);