Mouse input works

backends/pixel/pixel.go

@@ -126,6 +126,19 @@ func (backend *Backend) Resized () (resized bool) {
 	return
 }
 
+func (backend *Backend) MousePosition () (x, y int) {
+	vector := backend.window.MousePosition()
+	x = int (
+		(vector.X - float64(backend.metrics.paddingX)) /
+		float64(backend.metrics.cellWidth))
+	y = int (
+		(backend.windowBounds.Y -
+			vector.Y -
+			float64(backend.metrics.paddingY)) /
+		float64(backend.metrics.cellHeight))
+	return
+}
+
 func (backend *Backend) draw () {
 	// didDrawing := false
 	width, height := backend.application.Size()