Reset indicator when the screen is locked

[ameter] / ameterwidget.cpp

diff --git a/ameterwidget.cpp b/ameterwidget.cpp
index f11ee02..4d2203d 100644 (file)
--- a/ameterwidget.cpp
+++ b/ameterwidget.cpp
@@ -30,6 +30,8 @@ AMeterWidget::AMeterWidget(QWidget *parent)
        bx = 0;
        by = 0;
        bz = 0;
+
+       in_reset = 1;
 }
 
 AMeterWidget::~AMeterWidget()
@@ -55,13 +57,16 @@ void AMeterWidget::paintEvent(QPaintEvent *e)
        qreal cx, cy, rx, ry;
        qreal x1, y1, a;
 
-       a = sqrt(ax * ax + ay * ay + az * az);
-
        if (background)
        {
                paint.drawImage(QPoint(0, 0), *background);
        }
 
+       if (in_reset) {
+               return;
+       }
+
+       a = sqrt(ax * ax + ay * ay + az * az);
        paint.setRenderHints(QPainter::Antialiasing);
 
        cx = width() / 2;
@@ -170,16 +175,25 @@ bool AMeterWidget::filter(QAccelerometerReading *reading)
        ay = reading->y() * r_g;
        az = reading->z() * r_g;
 
-       if (smoothing > 0 && smoothing < 4)
+       if (!in_reset && smoothing > 0 && smoothing < 4)
        {
                k = smoothing_k[smoothing];
                ax = ax * k + bx * (1.0 - k);
                ay = ay * k + by * (1.0 - k);
                az = az * k + bz * (1.0 - k);
        }
-       
+
+       in_reset = 0;   
        update();
 
        return true;
 }
 
+void AMeterWidget::reset()
+{
+       in_reset = 0;
+       ax = 0;
+       ay = 0;
+       az = 0;
+}
+