command: add window-maximized and make window-minimized settable

If we want to implement window pseudo-decorations via OSC, we need a
way to tell the vo to minimize and maximize the window. Today, we have
minimized as a read-only property, and no property for maximized.

Let's made minimized settable and add a maximized property to go with
it. In turn, that requires us to add VOCTRLs for minimizing or
maximizing a window, and an additional WIN_STATE to indicate a
maximized window.

player/command.c

@@ -2299,7 +2299,40 @@ static int mp_property_win_minimized(void *ctx, struct m_property *prop,
     if (vo_control(vo, VOCTRL_GET_WIN_STATE, &state) < 1)
         return M_PROPERTY_UNAVAILABLE;
 
-    return m_property_flag_ro(action, arg, state & VO_WIN_STATE_MINIMIZED);
+    switch (action) {
+    case M_PROPERTY_SET:
+        vo_control(vo, VOCTRL_MINIMIZE, 0);
+        return M_PROPERTY_OK;
+    case M_PROPERTY_GET:
+    case M_PROPERTY_GET_TYPE:
+        return m_property_flag_ro(action, arg, state & VO_WIN_STATE_MINIMIZED);
+    default:
+        return M_PROPERTY_NOT_IMPLEMENTED;
+    }
+}
+
+static int mp_property_win_maximized(void *ctx, struct m_property *prop,
+                                     int action, void *arg)
+{
+    MPContext *mpctx = ctx;
+    struct vo *vo = mpctx->video_out;
+    if (!vo)
+        return M_PROPERTY_UNAVAILABLE;
+
+    int state = 0;
+    if (vo_control(vo, VOCTRL_GET_WIN_STATE, &state) < 1)
+        return M_PROPERTY_UNAVAILABLE;
+
+    switch (action) {
+    case M_PROPERTY_SET:
+        vo_control(vo, VOCTRL_MAXIMIZE, 0);
+        return M_PROPERTY_OK;
+    case M_PROPERTY_GET:
+    case M_PROPERTY_GET_TYPE:
+        return m_property_flag_ro(action, arg, state & VO_WIN_STATE_MAXIMIZED);
+    default:
+        return M_PROPERTY_NOT_IMPLEMENTED;
+    }
 }
 
 static int mp_property_display_fps(void *ctx, struct m_property *prop,
@@ -3405,6 +3438,7 @@ static const struct m_property mp_properties_base[] = {
     PROPERTY_BITRATE("sub-bitrate", false, STREAM_SUB),
 
     {"window-minimized", mp_property_win_minimized},
+    {"window-maximized", mp_property_win_maximized},
     {"display-names", mp_property_display_names},
     {"display-fps", mp_property_display_fps},
     {"estimated-display-fps", mp_property_estimated_display_fps},
@@ -3484,7 +3518,7 @@ static const char *const *const mp_event_property_change[] = {
       "demuxer-cache-state"),
     E(MP_EVENT_WIN_RESIZE, "window-scale", "osd-width", "osd-height", "osd-par"),
     E(MP_EVENT_WIN_STATE, "window-minimized", "display-names", "display-fps",
-      "fullscreen"),
+      "fullscreen", "window-maximized"),
     E(MP_EVENT_CHANGE_PLAYLIST, "playlist", "playlist-pos", "playlist-pos-1",
       "playlist-count", "playlist/count"),
     E(MP_EVENT_CORE_IDLE, "core-idle", "eof-reached"),
@@ -3704,6 +3738,8 @@ static const struct property_osd_display {
     // By default, don't display the following properties on OSD
     {"pause", NULL},
     {"fullscreen", NULL},
+    {"window-minimized", NULL},
+    {"window-maximized", NULL},
     {0}
 };
 

video/out/vo.h

@@ -126,10 +126,14 @@ enum mp_voctrl {
 
     /* private to vo_gpu */
     VOCTRL_EXTERNAL_RESIZE,
+
+    VOCTRL_MAXIMIZE,
+    VOCTRL_MINIMIZE,
 };
 
 // VOCTRL_GET_WIN_STATE
-#define VO_WIN_STATE_MINIMIZED 1
+#define VO_WIN_STATE_MINIMIZED (1 << 0)
+#define VO_WIN_STATE_MAXIMIZED (1 << 1)
 
 #define VO_TRUE         true
 #define VO_FALSE        false