1 files changed, 85 insertions, 0 deletions
diff --git a/gauge.cpp b/gauge.cpp
new file mode 100644
index 0000000..9e47606
--- /dev/null
+++ b/gauge.cpp
@@ -0,0 +1,85 @@
+#include "gauge.h"
+
+Gauge::Gauge(QWidget *parent) : QWidget (parent) ,
+    m_gauge_percentage(0),
+    m_needle_horizontal_offset(0),
+    m_needle_origin(0,0),
+    m_start_angle(180),
+    m_end_angle(0)
+{
+    setMinimumHeight(32);
+    setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
+}
+
+void Gauge::setOrigin(int x,int y) //Set a real origin based on image if available, otherwise store desired value for later use.
+{
+    if(!m_needle.isNull())
+    {
+        m_draw_point = QPoint(x-m_needle_horizontal_offset-(m_needle.width()/2),y-m_needle.height());
+        m_needle_origin = QPoint(x,y);
+        update();
+    }
+    else
+    {
+        m_needle_origin = QPoint(x,y);
+    }
+}
+void Gauge::setOrigin(QPoint o) //Set a real origin based on image if available, otherwise store desired value for later use.
+{
+    if(!m_needle.isNull())
+    {
+        m_draw_point = QPoint(o.x()-m_needle_horizontal_offset-(m_needle.width()/2),o.y()-m_needle.height());
+        m_needle_origin = o;
+        update();
+    }
+    else
+    {
+        m_needle_origin = o;
+    }
+}
+//void Gauge::obtainLength()
+//{
+//    if(m_needle.isNull())return;
+
+//    if(m_needle.height() > m_needle.width())
+//        m_needle_length = m_needle.height();
+//    else
+//        m_needle_length = m_needle.width();
+//    update();
+//}
+
+void Gauge::setNeedleImage(QString path)
+{
+    m_needle.load(path);
+    //obtainLength();
+    update();
+}
+
+void Gauge::setEndAngle(qreal a)
+{
+    if(a > 0) m_end_angle = a - 360.0;
+    else m_end_angle = a;
+    update();
+}
+
+void Gauge::setStartAngle(qreal a)
+{
+    if(a < 0) m_start_angle = a + 360.0;
+    else m_start_angle = a;
+    update();
+}
+
+void Gauge::paintEvent(QPaintEvent *)
+{
+    if(m_needle.isNull())return;
+    QPainter p(this);
+    QTransform tran;
+    double angle = (DEFUALT_IMAGE_ANGLE - m_start_angle)-((m_end_angle-m_start_angle)/(100.0)*m_gauge_percentage);
+
+    tran.translate(m_needle_origin.x(),m_needle_origin.y());
+    tran.rotate(angle);
+    tran.translate(-m_needle_origin.x(),-m_needle_origin.y());
+
+    p.setTransform(tran);
+    p.drawPixmap(m_draw_point,m_needle);
+}