GTK: Fixed flow/glow not being drawn directly after initialization.

xtt/lib/flow/gtk/flow_draw_gtk.cpp

@@ -427,7 +427,7 @@ void FlowDrawGtk::create_buffer(DrawWind *w)
 
   w->buffer = gdk_pixmap_new(w->window, window_width, window_height, -1);
 
-  gdk_draw_rectangle(w->buffer, gcs[flow_eDrawType_LineErase][0], TRUE, 0, 0, window_width, window_height);
+  ctx->set_dirty();
 }
 
 FlowDrawGtk::FlowDrawGtk(GtkWidget* x_toplevel, void** flow_ctx,
@@ -1310,7 +1310,9 @@ void FlowDrawGtk::cancel_redraw_timer()
 
 void FlowDrawGtk::start_redraw_timer()
 {
-  redraw_timer = g_timeout_add(40, redraw_timer_cb, this);
+  if (!redraw_timer) {
+    redraw_timer = g_timeout_add(40, redraw_timer_cb, this);
+  }
 }
 
 void FlowDrawGtk::set_timer(FlowCtx* ctx, int time_ms,

xtt/lib/glow/gtk/glow_draw_gtk.cpp

@@ -618,7 +618,6 @@ GlowDrawGtk::GlowDrawGtk(GtkWidget* toplevel, void** glow_ctx,
 
   glow_create_cursor(this);
 
-  get_window_size(ctx->mw, &ctx->mw->window_width, &ctx->mw->window_height);
   create_buffer(&m_wind);
   init_proc(toplevel, ctx, client_data);
 }
@@ -1653,7 +1652,9 @@ void GlowDrawGtk::cancel_redraw_timer()
 
 void GlowDrawGtk::start_redraw_timer()
 {
-  redraw_timer = g_timeout_add(40, redraw_timer_cb, this);
+  if (!redraw_timer) {
+    redraw_timer = g_timeout_add(40, redraw_timer_cb, this);
+  }
 }
 
 void GlowDrawGtk::set_timer(
@@ -1952,6 +1953,7 @@ void GlowDrawGtk::create_buffer(DrawWindGtk* w)
   w->buffer = gdk_pixmap_new(w->window, window_width, window_height, -1);
   w->window_width = window_width;
   w->window_height = window_height;
+  ctx->set_dirty();
 }
 
 int GlowDrawGtk::export_image(char* filename)