Re: Remove flickering on resize and get rid of the aspect frame

[Stefan Kost <ensonic hora-obscura de>]

Filippo Argiolas schrieb:
> On Mon, May 25, 2009 at 9:37 AM, Stefan Kost <ensonic hora-obscura de> wrote:
>   
>> hi,
>>
>> Filippo Argiolas schrieb:
>>     
>>> On Sun, May 24, 2009 at 6:47 PM, daniel g. siegel <dgsiegel gnome org> wrote:
>>>
>>>       
>>>> hey filippo!
>>>>
>>>>         
>>> hey!
>>>
>>>
>>>       
>> in the gstreamer seek example we do this:
>> video_window = gtk_drawing_area_new ();
>> g_signal_connect (G_OBJECT (video_window), "expose-event",
>>    G_CALLBACK (handle_expose_cb), NULL);
>> gtk_widget_set_double_buffered (video_window, FALSE);
>>
>> static gboolean
>> handle_expose_cb (GtkWidget * widget, GdkEventExpose * event, gpointer data)
>> {
>>  if (state < GST_STATE_PAUSED) {
>>    gdk_draw_rectangle (widget->window, widget->style->black_gc, TRUE,
>>        0, 0, widget->allocation.width, widget->allocation.height);
>>  }
>>  return FALSE;
>> }
>>
>> this is kind of video-specific - it ensures that xvimagsink paint the
>> video if pipeline is in paused and there is an expose. but you could
>> also turn off expose-handling on xvimagesink.
>>     
>
> I'm not sure to understand what you mean. According to GstXOverlay
> docs, gst_x_overlay_expose should work in PAUSED state too. Am I
> missing anything?
>   
Yes, exactly. Unless you disable "handle-expose" in xvimagesink, it will
redraw current frame in paused/playing. But if the pipeline is not
started yet, and you resize the window no one repaints and it looks
ugly. Thats what the above code takes care of.

Stefan