console: add and use qemu_display_find_default

Using the new display registry instead of #ifdefs in vl.c.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20180301100547.18962-7-kraxel@redhat.com

1 files changed, 19 insertions, 0 deletions

diff --git a/ui/console.c b/ui/console.c
index a11b120..25d342c 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -2188,6 +2188,25 @@ void qemu_display_register(QemuDisplay *ui)
     dpys[ui->type] = ui;
 }
 
+bool qemu_display_find_default(DisplayOptions *opts)
+{
+    static DisplayType prio[] = {
+        DISPLAY_TYPE_GTK,
+        DISPLAY_TYPE_SDL,
+        DISPLAY_TYPE_COCOA
+    };
+    int i;
+
+    for (i = 0; i < ARRAY_SIZE(prio); i++) {
+        if (dpys[prio[i]] == NULL) {
+            continue;
+        }
+        opts->type = prio[i];
+        return true;
+    }
+    return false;
+}
+
 void qemu_display_early_init(DisplayOptions *opts)
 {
     assert(opts->type < DISPLAY_TYPE__MAX);