gui, tracker/{aruco,pt}, api: detect whether widget is visible on screen

Sadly, it's only implemented right now on win32.

Remove "set enabled" code for the video widget since it only works for
explicit window minimization, not covering by other windows.

2 files changed, 1 insertions, 32 deletions

diff --git a/gui/ui.cpp b/gui/ui.cpp
index 37b9b748..2feb806b 100644
--- a/gui/ui.cpp
+++ b/gui/ui.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2013-2015, Stanislaw Halik <sthalik@misaki.pl>
+/* Copyright (c) 2013-2016, Stanislaw Halik <sthalik@misaki.pl>
 
  * Permission to use, copy, modify, and/or distribute this
  * software for any purpose with or without fee is hereby granted,
@@ -124,8 +124,6 @@ MainWindow::MainWindow() :
 
     register_shortcuts();
 
-    connect(this, &MainWindow::emit_minimized, this, &MainWindow::mark_minimized, Qt::QueuedConnection);
-
     ui.btnStartTracker->setFocus();
 }
 
@@ -558,30 +556,6 @@ void MainWindow::restore_from_tray(QSystemTrayIcon::ActivationReason)
     activateWindow(); // for Windows
 }
 
-void MainWindow::changeEvent(QEvent* e)
-{
-    if (e->type() == QEvent::WindowStateChange)
-    {
-        const bool is_minimized = windowState() & Qt::WindowMinimized;
-
-        if (s.tray_enabled && is_minimized)
-        {
-            if (!tray)
-                ensure_tray();
-            hide();
-        }
-
-        emit_minimized(is_minimized);
-    }
-
-    QMainWindow::changeEvent(e);
-}
-
-void MainWindow::mark_minimized(bool is_minimized)
-{
-    ui.video_frame->setEnabled(!is_minimized);
-}
-
 void MainWindow::maybe_start_profile_from_executable()
 {
     if (!work)
diff --git a/gui/ui.h b/gui/ui.h
index 9c65d6e0..7509e318 100644
--- a/gui/ui.h
+++ b/gui/ui.h
@@ -69,8 +69,6 @@ class MainWindow : public QMainWindow, private State
         return modules.filters().value(ui.iconcomboFilter->currentIndex(), nullptr);
     }
 
-    void changeEvent(QEvent* e) override;
-
     void load_settings();
     void load_mappings();
     void updateButtonState(bool running, bool inertialp);
@@ -104,14 +102,11 @@ private slots:
     void startTracker();
     void stopTracker();
     void reload_options();
-    void mark_minimized(bool is_minimized);
 signals:
     void emit_start_tracker();
     void emit_stop_tracker();
     void emit_toggle_tracker();
     void emit_restart_tracker();
-
-    void emit_minimized(bool);
 public:
     MainWindow();
     ~MainWindow();