1 files changed, 100 insertions, 0 deletions
diff --git a/cplugins/gtk/gtk.c b/cplugins/gtk/gtk.c
new file mode 100644
index 0000000..304fc18
--- /dev/null
+++ b/cplugins/gtk/gtk.c
@@ -0,0 +1,100 @@
+// Build with: gcc -o gtk.so gtk.c `pkg-config --cflags mpv` `pkg-config --cflags --libs gtk+-3.0 x11` -pthread -shared -fPIC
+
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+// For mpv_gtk_helper_run() and mpv_gtk_helper_done(). Also pulls in headers.
+#include "mpv_gtk_helper.inc"
+
+// The following code is partially derived from the GTK tutorial example.
+
+struct plugin_context {
+    mpv_gtk_helper_context *helper;
+    GtkWidget *pbar;
+};
+
+static gboolean delete_event( GtkWidget *widget,
+                              GdkEvent  *event,
+                              gpointer   data )
+{
+    // Exit UI.
+
+    struct plugin_context *ctx = data;
+
+    if (ctx->helper) {
+        mpv_gtk_helper_context_destroy(ctx->helper);
+        ctx->helper = NULL;
+    }
+
+    return FALSE;
+}
+
+static gboolean handle_mpv_events(void *data)
+{
+    struct plugin_context *ctx = data;
+
+    if (!ctx->helper)
+        return FALSE;
+
+    while (1) {
+        mpv_event *event = mpv_wait_event(ctx->helper->mpv, 0);
+        if (event->event_id == MPV_EVENT_NONE)
+            break;
+
+        printf("event: %s\n", mpv_event_name(event->event_id));
+
+        if (event->event_id == MPV_EVENT_PROPERTY_CHANGE) {
+            mpv_event_property *prop = event->data;
+            if (prop->format == MPV_FORMAT_INT64)
+                gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ctx->pbar),
+                                              *(int64_t*)prop->data / 100.0);
+        }
+
+        if (event->event_id == MPV_EVENT_SHUTDOWN) {
+            mpv_gtk_helper_context_destroy(ctx->helper);
+            ctx->helper = NULL;
+            break;
+        }
+    }
+
+    return FALSE;
+}
+
+static void wakeup_mpv(void *data)
+{
+    // wakeup_mpv is called in context of an arbitrary mpv thread.
+    // Run our GUI code on the GTK thread by notifying the mainloop.
+    g_idle_add(handle_mpv_events, data);
+}
+
+static void setup_gtk_stuff(mpv_gtk_helper_context *helper)
+{
+    // Out of severe lazyness, you don't free ctx. This is left as exercise
+    // to the reader.
+    struct plugin_context *ctx = calloc(1, sizeof(*ctx));
+    ctx->helper = helper;
+
+    // Make mpv notify us if there are new events.
+    mpv_set_wakeup_callback(ctx->helper->mpv, wakeup_mpv, ctx);
+
+    mpv_observe_property(ctx->helper->mpv, 0, "percent-pos", MPV_FORMAT_INT64);
+
+    GtkWidget *window;
+
+    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+    g_signal_connect (window, "delete-event",
+                      G_CALLBACK (delete_event), ctx);
+    gtk_container_set_border_width (GTK_CONTAINER (window), 10);
+    ctx->pbar = gtk_progress_bar_new ();
+    gtk_container_add (GTK_CONTAINER (window), ctx->pbar);
+    gtk_widget_show (ctx->pbar);
+    gtk_widget_show (window);
+}
+
+int mpv_open_cplugin(mpv_handle *handle)
+{
+    printf("Hello world from C plugin '%s'!\n", mpv_client_name(handle));
+
+    return mpv_gtk_helper_run(handle, &setup_gtk_stuff);
+}