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.

1 files changed, 0 insertions, 69 deletions

diff --git a/tracker-aruco/ar_video_widget.cpp b/tracker-aruco/ar_video_widget.cpp
deleted file mode 100644
index 2e87fdca..00000000
--- a/tracker-aruco/ar_video_widget.cpp
+++ /dev/null
@@ -1,69 +0,0 @@
-/* Copyright (c) 2014 Stanislaw Halik
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- */
-
-#include "ar_video_widget.h"
-
-void ArucoVideoWidget::update_image(const cv::Mat& frame)
-{
-    QMutexLocker foo(&mtx);
-    if (!fresh)
-    {
-        _frame = frame.clone();
-        fresh = true;
-    }
-}
-
-void ArucoVideoWidget::update_and_repaint()
-{
-    QImage qframe;
-    
-    {
-        QMutexLocker foo(&mtx);
-        if (_frame.cols*_frame.rows <= 0 || !fresh)
-            return;
-        fresh = false;
-        qframe = QImage(_frame.cols, _frame.rows, QImage::Format_RGB888);
-        uchar* data = qframe.bits();
-        const unsigned pitch = qframe.bytesPerLine();
-        unsigned char *input = _frame.data;
-        const unsigned chans = _frame.channels();
-        const unsigned rows = _frame.rows, cols = _frame.cols;
-        const unsigned step = _frame.step;
-        for (unsigned y = 0; y < rows; y++)
-        {
-            const unsigned step_ = y * step;
-            const unsigned pitch_ = y * pitch;
-            for (unsigned x = 0; x < cols; x++)
-            {
-                data[pitch_ + x * 3 + 0] = input[step_ + x * chans + 2];
-                data[pitch_ + x * 3 + 1] = input[step_ + x * chans + 1];
-                data[pitch_ + x * 3 + 2] = input[step_ + x * chans + 0];
-            }
-        }
-    }
-    
-    qframe = qframe.scaled(size(), Qt::IgnoreAspectRatio, Qt::FastTransformation);
-    
-    {
-        QMutexLocker foo(&mtx);
-        texture = qframe;
-    }
-    
-    update();
-}
-
-void ArucoVideoWidget::paintEvent(QPaintEvent* e)
-{
-    QMutexLocker foo(&mtx);
-    QPainter(this).drawImage(e->rect(), texture);
-}
-
-ArucoVideoWidget::ArucoVideoWidget(QWidget* parent): QWidget(parent), fresh(false)
-{
-    connect(&timer, SIGNAL(timeout()), this, SLOT(update_and_repaint()));
-    timer.start(60);
-}