From ab82afab7f8da81fbd6445a0b65fb70ecba898b8 Mon Sep 17 00:00:00 2001
From: Ilia Bozhinov <ammen99@gmail.com>
Date: Sun, 24 Mar 2019 20:18:59 +0100
Subject: wayland: implement a proper repaint cycle

---
 lib/renderers/wayland/window.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

(limited to 'lib/renderers/wayland/window.c')

diff --git a/lib/renderers/wayland/window.c b/lib/renderers/wayland/window.c
index 1890a60..2141eff 100644
--- a/lib/renderers/wayland/window.c
+++ b/lib/renderers/wayland/window.c
@@ -197,17 +197,29 @@ frame_callback(void *data, struct wl_callback *callback, uint32_t time)
     struct window *window = data;
     wl_callback_destroy(callback);
     window->frame_cb = NULL;
+    window->render_pending = true;
 }
 
 static const struct wl_callback_listener listener = {
     frame_callback
 };
 
+void
+bm_wl_window_schedule_render(struct window *window)
+{
+    assert(window);
+    if (window->frame_cb)
+        return;
+
+    window->frame_cb = wl_surface_frame(window->surface);
+    wl_callback_add_listener(window->frame_cb, &listener, window);
+    wl_surface_commit(window->surface);
+}
+
 void
 bm_wl_window_render(struct window *window, struct wl_display *display, const struct bm_menu *menu)
 {
     assert(window && menu);
-
     struct buffer *buffer;
     for (int tries = 0; tries < 2; ++tries) {
         if (!(buffer = next_buffer(window))) {
@@ -232,13 +244,11 @@ bm_wl_window_render(struct window *window, struct wl_display *display, const str
         destroy_buffer(buffer);
     }
 
-    window->frame_cb = wl_surface_frame(window->surface);
-    wl_callback_add_listener(window->frame_cb, &listener, window);
-
     wl_surface_damage(window->surface, 0, 0, buffer->width, buffer->height);
     wl_surface_attach(window->surface, buffer->buffer, 0, 0);
     wl_surface_commit(window->surface);
     buffer->busy = true;
+    window->render_pending = false;
 }
 
 void
-- 
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