user-image: Port to AdwAvatar

This simultaneously allows us to remove a lot of code, and make
Malcontent more consistent with the rest of the system.

Port MctUserImage to use an AdwAvatar internally. Make it inherit
AdwBin since it has a single child now.

malcontent-control/user-image.c

@@ -19,7 +19,7 @@
  *  - Ondrej Holy <oholy@redhat.com>
  */
 
-#include <gtk/gtk.h>
+#include <adwaita.h>
 #include <act/act.h>
 #include <sys/stat.h>
 
@@ -28,108 +28,49 @@
 
 struct _MctUserImage
 {
-  GtkImage parent_instance;
+  AdwBin parent_instance;
+
+  AdwAvatar *avatar;
 
   ActUser *user;
 };
 
-G_DEFINE_TYPE (MctUserImage, mct_user_image, GTK_TYPE_IMAGE)
+G_DEFINE_TYPE (MctUserImage, mct_user_image, ADW_TYPE_BIN)
 
-static GdkPixbuf *
+static GdkTexture *
-round_image (GdkPixbuf *pixbuf)
+render_user_icon_texture (ActUser *user)
 {
-  GdkPixbuf *dest = NULL;
+  g_autoptr(GdkTexture) texture = NULL;
-  cairo_surface_t *surface;
+  g_autoptr(GError) error = NULL;
-  cairo_t *cr;
-  gint size;
-
-  size = gdk_pixbuf_get_width (pixbuf);
-  surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, size, size);
-  cr = cairo_create (surface);
-
-  /* Clip a circle */
-  cairo_arc (cr, size / 2, size / 2, size / 2, 0, 2 * G_PI);
-  cairo_clip (cr);
-  cairo_new_path (cr);
-
-  gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
-  cairo_paint (cr);
-
-  dest = gdk_pixbuf_get_from_surface (surface, 0, 0, size, size);
-  cairo_surface_destroy (surface);
-  cairo_destroy (cr);
-
-  return dest;
-}
-
-static cairo_surface_t *
-render_user_icon (ActUser *user,
-                  gint     icon_size,
-                  gint     scale)
-{
-  g_autoptr(GdkPixbuf) source_pixbuf = NULL;
-  GdkPixbuf *pixbuf = NULL;
-  GError *error;
   const gchar *icon_file;
-  cairo_surface_t *surface = NULL;
 
   g_return_val_if_fail (ACT_IS_USER (user), NULL);
-  g_return_val_if_fail (icon_size > 12, NULL);
 
   icon_file = act_user_get_icon_file (user);
-  pixbuf = NULL;
+  if (icon_file == NULL)
-  if (icon_file)
+    return NULL;
+
+  texture = gdk_texture_new_from_filename (icon_file, &error);
+  if (error != NULL)
     {
-      source_pixbuf = gdk_pixbuf_new_from_file_at_size (icon_file,
+      g_warning ("Error loading user icon: %s", error->message);
-                                                        icon_size * scale,
+      return NULL;
-                                                        icon_size * scale,
-                                                        NULL);
-      if (source_pixbuf)
-        pixbuf = round_image (source_pixbuf);
     }
 
-  if (pixbuf != NULL)
+  return g_steal_pointer (&texture);
-    goto out;
-
-  error = NULL;
-  pixbuf = gtk_icon_theme_load_icon (gtk_icon_theme_get_default (),
-                                     "avatar-default",
-                                     icon_size * scale,
-                                     GTK_ICON_LOOKUP_FORCE_SIZE,
-                                     &error);
-  if (error)
-    {
-      g_warning ("%s", error->message);
-      g_error_free (error);
-    }
-
-out:
-
-  if (pixbuf != NULL)
-    {
-      surface = gdk_cairo_surface_create_from_pixbuf (pixbuf, scale, NULL);
-      g_object_unref (pixbuf);
-    }
-
-  return surface;
 }
 
 static void
 render_image (MctUserImage *image)
 {
-  cairo_surface_t *surface;
+  g_autoptr(GdkTexture) texture = NULL;
-  gint scale, pixel_size;
 
   if (image->user == NULL)
     return;
 
-  pixel_size = gtk_image_get_pixel_size (GTK_IMAGE (image));
+  texture = render_user_icon_texture (image->user);
-  scale = gtk_widget_get_scale_factor (GTK_WIDGET (image));
+  adw_avatar_set_custom_image (image->avatar, GDK_PAINTABLE (texture));
-  surface = render_user_icon (image->user,
+  adw_avatar_set_text (image->avatar, act_user_get_real_name (image->user));
-                              pixel_size > 0 ? pixel_size : 48,
-                              scale);
-  gtk_image_set_from_surface (GTK_IMAGE (image), surface);
-  cairo_surface_destroy (surface);
 }
 
 void
@@ -163,8 +104,8 @@ mct_user_image_class_init (MctUserImageClass *class)
 static void
 mct_user_image_init (MctUserImage *image)
 {
-  g_signal_connect_swapped (image, "notify::scale-factor", G_CALLBACK (render_image), image);
+  image->avatar = ADW_AVATAR (adw_avatar_new (48, NULL, TRUE));
-  g_signal_connect_swapped (image, "notify::pixel-size", G_CALLBACK (render_image), image);
+  adw_bin_set_child (ADW_BIN (image), GTK_WIDGET (image->avatar));
 }
 
 GtkWidget *

malcontent-control/user-image.h

@@ -21,14 +21,14 @@
 
 #pragma once
 
-#include <gtk/gtk.h>
+#include <adwaita.h>
 #include <act/act.h>
 
 
 G_BEGIN_DECLS
 
 #define MCT_TYPE_USER_IMAGE (mct_user_image_get_type ())
-G_DECLARE_FINAL_TYPE (MctUserImage, mct_user_image, MCT, USER_IMAGE, GtkImage)
+G_DECLARE_FINAL_TYPE (MctUserImage, mct_user_image, MCT, USER_IMAGE, AdwBin)
 
 GtkWidget *mct_user_image_new      (void);
 void       mct_user_image_set_user (MctUserImage *image,