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3dvideo example: Correct video overlay for HiDPI

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Use the GTK scaling factor to scale the video allocation
so video displays correctly on hi-dpi screens
This commit is contained in:
Jan Schmidt 2017-11-24 01:37:48 +11:00
parent 73cd56bddb
commit 9a10dbe350
1 changed files with 8 additions and 1 deletions
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9
tests/examples/gl/gtk/3dvideo/main.cpp
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@ -117,9 +117,16 @@ static gboolean
resize_cb (GtkWidget * widget, GdkEvent * event, gpointer sink) resize_cb (GtkWidget * widget, GdkEvent * event, gpointer sink)
{ {
GtkAllocation allocation; GtkAllocation allocation;
gint scale = 1;
#if GTK_CHECK_VERSION(3, 10, 0)
scale = gtk_widget_get_scale_factor (widget);
#endif
gtk_widget_get_allocation (widget, &allocation); gtk_widget_get_allocation (widget, &allocation);
gst_video_overlay_set_render_rectangle (GST_VIDEO_OVERLAY (sink), allocation.x, allocation.y, allocation.width, allocation.height); gst_video_overlay_set_render_rectangle (GST_VIDEO_OVERLAY (sink),
allocation.x * scale, allocation.y * scale, allocation.width * scale,
allocation.height * scale);
return G_SOURCE_CONTINUE; return G_SOURCE_CONTINUE;
} }