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node-editor: Display errors

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When opening a file or pasting DND fails, display the error as the
actual node.
This commit is contained in:
Benjamin Otte 2021-11-29 23:58:28 +01:00
parent 354fa6544a
commit 8d1956921d
1 changed files with 37 additions and 4 deletions
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39
demos/node-editor/node-editor-window.c
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@ -336,12 +336,39 @@ text_view_query_tooltip_cb (GtkWidget *widget,
} }
} }
static gboolean
load_bytes (NodeEditorWindow *self,
GBytes *bytes);
static void
load_error (NodeEditorWindow *self,
const char *error_message)
{
PangoLayout *layout;
GtkSnapshot *snapshot;
GskRenderNode *node;
GBytes *bytes;
layout = gtk_widget_create_pango_layout (GTK_WIDGET (self), error_message);
pango_layout_set_width (layout, 300 * PANGO_SCALE);
snapshot = gtk_snapshot_new ();
gtk_snapshot_append_layout (snapshot, layout, &(GdkRGBA) { 0.7, 0.13, 0.13, 1.0 });
node = gtk_snapshot_free_to_node (snapshot);
bytes = gsk_render_node_serialize (node);
load_bytes (self, bytes);
gsk_render_node_unref (node);
g_object_unref (layout);
}
static gboolean static gboolean
load_bytes (NodeEditorWindow *self, load_bytes (NodeEditorWindow *self,
GBytes *bytes) GBytes *bytes)
{ {
if (!g_utf8_validate (g_bytes_get_data (bytes, NULL), g_bytes_get_size (bytes), NULL)) if (!g_utf8_validate (g_bytes_get_data (bytes, NULL), g_bytes_get_size (bytes), NULL))
{ {
load_error (self, "Invalid UTF-8");
g_bytes_unref (bytes); g_bytes_unref (bytes);
return FALSE; return FALSE;
} }
@ -359,11 +386,16 @@ static gboolean
load_file_contents (NodeEditorWindow *self, load_file_contents (NodeEditorWindow *self,
GFile *file) GFile *file)
{ {
GError *error = NULL;
GBytes *bytes; GBytes *bytes;
bytes = g_file_load_bytes (file, NULL, NULL, NULL); bytes = g_file_load_bytes (file, NULL, NULL, &error);
if (bytes == NULL) if (bytes == NULL)
{
load_error (self, error->message);
g_clear_error (&error);
return FALSE; return FALSE;
}
return load_bytes (self, bytes); return load_bytes (self, bytes);
} }
@ -473,17 +505,18 @@ node_editor_window_load (NodeEditorWindow *self,
{ {
GError *error = NULL; GError *error = NULL;
g_clear_object (&self->file_monitor);
if (!load_file_contents (self, file)) if (!load_file_contents (self, file))
return FALSE; return FALSE;
g_clear_object (&self->file_monitor);
self->file_monitor = g_file_monitor_file (file, G_FILE_MONITOR_NONE, NULL, &error); self->file_monitor = g_file_monitor_file (file, G_FILE_MONITOR_NONE, NULL, &error);
if (error) if (error)
{ {
g_warning ("couldn't monitor file: %s", error->message); g_warning ("couldn't monitor file: %s", error->message);
g_error_free (error); g_error_free (error);
g_clear_object (&self->file_monitor);
} }
else else
{ {