graphing widget and test harness

1 files changed, 42 insertions, 0 deletions

diff --git a/CairoWidget.cxx b/CairoWidget.cxx
new file mode 100644
index 00000000..86498a4f
--- /dev/null
+++ b/CairoWidget.cxx
@@ -0,0 +1,42 @@
+#include "CairoWidget.hxx"
+
+#include <math.h>
+
+namespace systemtap
+{
+  void CairoPlayButton::draw(Cairo::RefPtr<Cairo::Context> cr)
+  {
+    if (!_visible)
+      return;
+    cr->save();
+    cr->set_line_width(1.0);
+    // square with rounded corners
+    cr->move_to(_x0, _y0 + _radius);
+    cr->arc(_x0 + _radius, _y0 + _radius, _radius, M_PI, -M_PI_2);
+    cr->line_to(_x0 + _size - _radius, _y0);
+    cr->arc(_x0 + _size - _radius, _y0 + _radius, _radius, -M_PI_2, 0.0);
+    cr->line_to(_x0 + _size, _y0 + _size - _radius);
+    cr->arc(_x0 + _size - _radius, _y0 + _size - _radius, _radius, 0.0, M_PI_2);
+    cr->line_to(_x0 + _radius, _y0 + _size);
+    cr->arc(_x0 + _radius, _y0 + _size - _radius, _radius, M_PI_2, M_PI);
+    cr->close_path();
+    //cr->rectangle(_x0, _y0, 50.0, 50.0);
+    cr->set_source_rgba(1.0, 1.0, 1.0, .8);
+    cr->stroke();
+    // play equalateral triangle
+    cr->move_to(_x0 + .25 * _size, _y0 + (.5 - 1.0 / (sqrt(3.0) * 2.0)) * _size);
+    cr->line_to(_x0 + .75 * _size, _y0 + .5 * _size);
+    cr->line_to(_x0 + .25 * _size, _y0 + (.5 + 1.0 / (sqrt(3.0) * 2.0)) * _size);
+    cr->close_path();
+    cr->fill();
+    cr->restore();
+  }
+
+  bool CairoPlayButton::containsPoint(double x, double y)
+  {
+    if (x >= _x0 && (x < (_x0 + 50.0)) && (y >= _y0) && (y < (_y0 + 50)))
+     return true;
+    else
+    return false;
+  }
+}