From 416c86f3cb3535a5b252b8c08a7f4cb253fa495a Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Sun, 2 Nov 2014 20:48:45 +0100
Subject: command: add window-minimized property (X11 only)

More or less requested by #1237.

Should be simple to extend this to other backends.
---
 video/out/vo.h         |  9 ++++++++-
 video/out/x11_common.c | 19 +++++++++++++++++++
 video/out/x11_common.h |  1 +
 3 files changed, 28 insertions(+), 1 deletion(-)

(limited to 'video')

diff --git a/video/out/vo.h b/video/out/vo.h
index 035b4dc1d6..6906cab222 100644
--- a/video/out/vo.h
+++ b/video/out/vo.h
@@ -36,9 +36,11 @@
 #define VO_EVENT_RESIZE 2
 // The ICC profile needs to be reloaded
 #define VO_EVENT_ICC_PROFILE_PATH_CHANGED 4
+// Some other window state changed
+#define VO_EVENT_WIN_STATE 8
 
 // Set of events the player core may be interested in.
-#define VO_EVENTS_USER (VO_EVENT_RESIZE)
+#define VO_EVENTS_USER (VO_EVENT_RESIZE | VO_EVENT_WIN_STATE)
 
 enum mp_voctrl {
     /* signal a device reset seek */
@@ -83,6 +85,8 @@ enum mp_voctrl {
     VOCTRL_GET_UNFS_WINDOW_SIZE,        // int[2] (w/h)
     VOCTRL_SET_UNFS_WINDOW_SIZE,        // int[2] (w/h)
 
+    VOCTRL_GET_WIN_STATE,               // int* (VO_WIN_STATE_* flags)
+
     // The VO is supposed to set  "known" fields, and leave the others
     // untouched or set to 0.
     // imgfmt/w/h/d_w/d_h can be omitted for convenience.
@@ -130,6 +134,9 @@ struct voctrl_screenshot_args {
     bool has_osd;
 };
 
+// VOCTRL_GET_WIN_STATE
+#define VO_WIN_STATE_MINIMIZED 1
+
 #define VO_TRUE         true
 #define VO_FALSE        false
 #define VO_ERROR        -1
diff --git a/video/out/x11_common.c b/video/out/x11_common.c
index 04f475ec5f..1779c5c29e 100644
--- a/video/out/x11_common.c
+++ b/video/out/x11_common.c
@@ -952,6 +952,8 @@ int vo_x11_check_events(struct vo *vo)
                     MP_VERBOSE(x11, "not waiting for MapNotify\n");
                     x11->pseudo_mapped = true;
                 }
+            } else if (Event.xproperty.atom == x11->atom_wm_state) {
+                x11->pending_vo_events |= VO_EVENT_WIN_STATE;
             }
             break;
         default:
@@ -1229,6 +1231,7 @@ static void vo_x11_create_window(struct vo *vo, XVisualInfo *vis,
     }
 
     x11->atom_frame_exts = XA(x11, _NET_FRAME_EXTENTS);
+    x11->atom_wm_state = XA(x11, _NET_WM_STATE);
 }
 
 static void vo_x11_map_window(struct vo *vo, struct mp_rect rc)
@@ -1584,6 +1587,22 @@ int vo_x11_control(struct vo *vo, int *events, int request, void *arg)
         }
         return VO_TRUE;
     }
+    case VOCTRL_GET_WIN_STATE: {
+        if (!x11->window)
+            return VO_FALSE;
+        int num_elems;
+        long *elems = x11_get_property(x11, x11->window, x11->atom_wm_state,
+                                       XA_ATOM, 32, &num_elems);
+        if (elems) {
+            Atom hidden = XA(x11, _NET_WM_STATE_HIDDEN);
+            for (int n = 0; n < num_elems; n++) {
+                if (elems[n] == hidden)
+                    *(int *)arg |= VO_WIN_STATE_MINIMIZED;
+            }
+            XFree(elems);
+        }
+        return VO_TRUE;
+    }
     case VOCTRL_SET_CURSOR_VISIBILITY:
         vo_set_cursor_hidden(vo, !(*(bool *)arg));
         return VO_TRUE;
diff --git a/video/out/x11_common.h b/video/out/x11_common.h
index 696e73aff3..d5927933c3 100644
--- a/video/out/x11_common.h
+++ b/video/out/x11_common.h
@@ -108,6 +108,7 @@ struct vo_x11_state {
     Window dnd_src_window;
 
     Atom atom_frame_exts;
+    Atom atom_wm_state;
 
     /* dragging the window */
     bool win_drag_button1_down;
-- 
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