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authorJoshua Drake <joshua.drake@ditchwitch.com>2023-06-20 10:15:47 -0500
committerJoshua Drake <joshua.drake@ditchwitch.com>2023-06-20 10:15:47 -0500
commit58d6674897c90a69aea7bc370e429fbc9d73bcca (patch)
treeab40f2c477c3af60435f54f4646fd24cee78ac04
Initial CommitHEADmaster
-rw-r--r--gauge.cpp85
-rw-r--r--gauge.h51
2 files changed, 136 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);
+}
diff --git a/gauge.h b/gauge.h
new file mode 100644
index 0000000..7bb9133
--- /dev/null
+++ b/gauge.h
@@ -0,0 +1,51 @@
+/*
+ * JD 12/9/2022
+*/
+#ifndef GAUGE_H
+#define GAUGE_H
+
+#include <QWidget>
+#include <QPainter>
+#include <QString>
+#include <QPixmap>
+#include <QTransform>
+#include <QPixmap>
+#include <QFontMetrics>
+
+#define DEFUALT_IMAGE_ANGLE 90
+
+class Gauge : public QWidget
+{
+ Q_OBJECT
+public:
+ explicit Gauge(QWidget *parent = nullptr);
+ void paintEvent(QPaintEvent *);
+
+signals:
+
+public slots:
+ void setNeedleImage(QPixmap p) {m_needle = p; update();}
+ void setNeedleImage(QString path);
+ //void obtainLength();
+ void setOrigin(int x,int y);
+ void setOrigin(QPoint o);
+ void setHorizontalOffset(int o) {m_needle_horizontal_offset = o; update();}
+ void setStartAngle(qreal a);
+ void setEndAngle(qreal a);
+ void setGaugePercentage(qreal p) {m_gauge_percentage = p; update();}
+
+
+protected:
+
+private:
+ //double m_needle_length;
+ double m_gauge_percentage;
+ int m_needle_horizontal_offset; //Use if needle isn't centered within the image.
+ QPoint m_needle_origin;
+ QPoint m_draw_point;
+ QPixmap m_needle;
+ qreal m_start_angle;
+ qreal m_end_angle;
+};
+
+#endif // GAUGE_H