user-accounts: Generate a default avatar for new users
When a user is created, we generate an avatar with their initials. See https://gitlab.gnome.org/GNOME/Initiatives/issues/6
This commit is contained in:
Felipe Borges
Ondrej Holy
parent
12ad6a1b18
commit
02c288ab6f
4 changed files with 187 additions and 40 deletions
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@ -66,46 +66,6 @@ struct _CcAvatarChooser {
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G_DEFINE_TYPE (CcAvatarChooser, cc_avatar_chooser, GTK_TYPE_POPOVER)
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static void
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set_user_icon_data (ActUser *user,
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GdkPixbuf *pixbuf)
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{
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gchar *path;
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gint fd;
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GOutputStream *stream;
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GError *error;
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path = g_build_filename (g_get_tmp_dir (), "gnome-control-center-user-icon-XXXXXX", NULL);
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fd = g_mkstemp (path);
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if (fd == -1) {
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g_warning ("failed to create temporary file for image data");
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g_free (path);
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return;
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}
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stream = g_unix_output_stream_new (fd, TRUE);
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error = NULL;
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if (!gdk_pixbuf_save_to_stream (pixbuf, stream, "png", NULL, &error, NULL)) {
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g_warning ("failed to save image: %s", error->message);
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g_error_free (error);
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g_object_unref (stream);
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return;
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}
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g_object_unref (stream);
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act_user_set_icon_file (user, path);
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/* if we ever make the dbus call async, the g_remove call needs
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* to wait for its completion
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*/
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g_remove (path);
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g_free (path);
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}
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static void
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crop_dialog_response (GtkWidget *dialog,
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gint response_id,
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@ -354,6 +354,7 @@ static void
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add_user (CcUserPanel *self)
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{
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CcAddUserDialog *dialog;
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g_autoptr(GdkPixbuf) pixbuf = NULL;
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GtkWindow *toplevel;
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ActUser *user;
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@ -364,6 +365,7 @@ add_user (CcUserPanel *self)
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gtk_dialog_run (GTK_DIALOG (dialog));
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user = cc_add_user_dialog_get_user (dialog);
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generate_user_avatar (user);
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if (user != NULL)
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reload_users (self, user);
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@ -29,10 +29,14 @@
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#include <pwd.h>
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#include <gio/gio.h>
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#include <gio/gunixoutputstream.h>
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#include <glib/gi18n.h>
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#include <glib/gstdio.h>
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#include "user-utils.h"
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#define IMAGE_SIZE 512
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typedef struct {
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gchar *text;
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gchar *placeholder_str;
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@ -469,3 +473,179 @@ round_image (GdkPixbuf *pixbuf,
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return dest;
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}
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static gchar *
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extract_initials_from_name (const gchar *name)
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{
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GString *initials;
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g_autofree gchar *p = NULL;
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g_autofree gchar *normalized = NULL;
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gunichar unichar;
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gpointer q = NULL;
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p = g_utf8_strup (name, -1);
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normalized = g_utf8_normalize (g_strstrip (p), -1, G_NORMALIZE_DEFAULT_COMPOSE);
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if (normalized == NULL) {
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return NULL;
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}
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initials = g_string_new ("");
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unichar = g_utf8_get_char (normalized);
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g_string_append_unichar (initials, unichar);
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q = g_utf8_strrchr (normalized, -1, ' ');
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if (q != NULL && g_utf8_next_char (q) != NULL) {
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q = g_utf8_next_char (q);
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unichar = g_utf8_get_char (q);
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g_string_append_unichar (initials, unichar);
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}
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return g_string_free (initials, FALSE);
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}
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static GdkRGBA
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get_color_for_name (const gchar *name)
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{
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// https://gitlab.gnome.org/Community/Design/HIG-app-icons/blob/master/GNOME%20HIG.gpl
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static gdouble gnome_color_palette[][3] = {
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{ 98, 160, 234 },
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{ 53, 132, 228 },
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{ 28, 113, 216 },
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{ 26, 95, 180 },
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{ 87, 227, 137 },
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{ 51, 209, 122 },
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{ 46, 194, 126 },
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{ 38, 162, 105 },
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{ 248, 228, 92 },
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{ 246, 211, 45 },
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{ 245, 194, 17 },
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{ 229, 165, 10 },
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{ 255, 163, 72 },
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{ 255, 120, 0 },
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{ 230, 97, 0 },
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{ 198, 70, 0 },
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{ 237, 51, 59 },
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{ 224, 27, 36 },
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{ 192, 28, 40 },
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{ 165, 29, 45 },
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{ 192, 97, 203 },
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{ 163, 71, 186 },
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{ 129, 61, 156 },
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{ 97, 53, 131 },
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{ 181, 131, 90 },
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{ 152, 106, 68 },
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{ 134, 94, 60 },
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{ 99, 69, 44 }
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};
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GdkRGBA color = { 255, 255, 255, 1.0 };
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guint hash;
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gint number_of_colors;
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gint idx;
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if (name == NULL || strlen (name) == 0)
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return color;
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hash = g_str_hash (name);
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number_of_colors = G_N_ELEMENTS (gnome_color_palette);
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idx = hash % number_of_colors;
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color.red = gnome_color_palette[idx][0];
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color.green = gnome_color_palette[idx][1];
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color.blue = gnome_color_palette[idx][2];
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return color;
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}
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static cairo_surface_t *
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generate_user_picture (const gchar *name)
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{
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PangoFontDescription *font_desc;
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g_autofree gchar *initials = extract_initials_from_name (name);
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g_autofree gchar *font = g_strdup_printf ("Sans %d", (int)ceil (IMAGE_SIZE / 2.5));
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PangoLayout *layout;
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GdkRGBA color = get_color_for_name (name);
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cairo_surface_t *surface;
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gint width, height;
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cairo_t *cr;
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surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
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IMAGE_SIZE,
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IMAGE_SIZE);
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cr = cairo_create (surface);
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cairo_rectangle (cr, 0, 0, IMAGE_SIZE, IMAGE_SIZE);
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cairo_set_source_rgb (cr, color.red/255.0, color.green/255.0, color.blue/255.0);
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cairo_fill (cr);
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/* Draw the initials on top */
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cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
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layout = pango_cairo_create_layout (cr);
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pango_layout_set_text (layout, initials, -1);
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font_desc = pango_font_description_from_string (font);
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pango_layout_set_font_description (layout, font_desc);
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pango_font_description_free (font_desc);
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pango_layout_get_size (layout, &width, &height);
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cairo_translate (cr, IMAGE_SIZE/2, IMAGE_SIZE/2);
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cairo_move_to (cr, - ((double)width / PANGO_SCALE)/2, - ((double)height/PANGO_SCALE)/2);
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pango_cairo_show_layout (cr, layout);
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cairo_destroy (cr);
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return surface;
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}
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void
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set_user_icon_data (ActUser *user,
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GdkPixbuf *pixbuf)
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{
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gchar *path;
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gint fd;
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GOutputStream *stream;
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GError *error;
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path = g_build_filename (g_get_tmp_dir (), "gnome-control-center-user-icon-XXXXXX", NULL);
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fd = g_mkstemp (path);
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if (fd == -1) {
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g_warning ("failed to create temporary file for image data");
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g_free (path);
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return;
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}
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stream = g_unix_output_stream_new (fd, TRUE);
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error = NULL;
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if (!gdk_pixbuf_save_to_stream (pixbuf, stream, "png", NULL, &error, NULL)) {
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g_warning ("failed to save image: %s", error->message);
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g_error_free (error);
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g_object_unref (stream);
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return;
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}
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g_object_unref (stream);
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act_user_set_icon_file (user, path);
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/* if we ever make the dbus call async, the g_remove call needs
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* to wait for its completion
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*/
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g_remove (path);
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g_free (path);
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}
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void
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generate_user_avatar (ActUser *user)
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{
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g_autoptr(GdkPixbuf) pixbuf = NULL;
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cairo_surface_t *surface;
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surface = generate_user_picture (act_user_get_real_name (user));
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pixbuf = gdk_pixbuf_get_from_surface (surface, 0, 0, IMAGE_SIZE, IMAGE_SIZE);
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cairo_surface_destroy (surface);
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set_user_icon_data (user, pixbuf);
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}
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@ -21,6 +21,7 @@
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#pragma once
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#include <gtk/gtk.h>
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#include <act/act.h>
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G_BEGIN_DECLS
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@ -44,4 +45,8 @@ gboolean is_valid_username (const gchar *name,
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gchar **tip);
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GdkPixbuf *round_image (GdkPixbuf *pixbuf,
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gint icon_size);
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void generate_user_avatar (ActUser *user);
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void set_user_icon_data (ActUser *user,
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GdkPixbuf *pixbuf);
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G_END_DECLS
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